Abstract

An optical zoom lens module includes: a first lens barrel including a straight groove and a protrusion; a second lens barrel disposed inside the first lens barrel, and including a convex rib; and an operating element disposed outside the first lens barrel, and including an oblique groove and a limiting groove, wherein the oblique groove is stacked on the straight groove in the radial direction, the convex rib passes through the straight groove and is positioned in the oblique groove, and the protrusion is located in the limiting groove; wherein when the operating element is rotated, the oblique groove make the convex rib of the second lens barrel move along the corresponding straight groove and oblique groove, and simultaneously the limiting groove is also moved relative to the protrusion.

IPC Classes  ?

• G02B 7/02 - Mountings, adjusting means, or light-tight connections, for optical elements for lenses

Abstract

An optical lens assembly includes, in order from an object side to an image side: a first lens with negative refractive power; a second lens with negative refractive power; a third lens with positive refractive power; a fourth lens with positive refractive power; a fifth lens with negative refractive power; a sixth lens with positive refractive power; and a seventh lens with negative refractive power; wherein an incident angle of a chief ray on an image plane at a maximum view angle of the optical lens assembly is CRA, a maximum effective radius of an object-side surface of the first lens is CA1, a maximum effective radius of an image-side surface of the seventh lens is CA14, and the following condition is satisfied: 14.42°

IPC Classes  ?

• G02B 13/00 - Optical objectives specially designed for the purposes specified below

Abstract

An optical lens assembly includes a stop, and includes, in order from the object side to the image side: a first lens, a second lens, a third lens, a fourth lens, a fifth lens, and a sixth lens; wherein a refractive index of the third lens is nd3, a central thickness of the third lens along the optical axis is CT3, an entrance pupil diameter of the optical lens assembly is EPD, and the following condition is satisfied: 2.64□(nd3*CT3)/EPD□4.55.

IPC Classes  ?

• G02B 9/62 - Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or – having six components only
• G02B 13/00 - Optical objectives specially designed for the purposes specified below
• G02B 13/06 - Panoramic objectivesSo-called "sky lenses"

Abstract

An optical lens assembly includes: a stop; and in order from an object side to an image side: a first lens; a second lens; a third lens; a fourth lens; and a fifth lens; wherein a distance from an image-side surface of the fifth lens to an image plane along an optical axis is BFL, an absolute value of a displacement in parallel to the optical axis from an intersection between the image-side surface of the fifth lens and the optical axis to a maximum effective radius position on the image-side surface of the fifth lens is TDP10, a maximum effective radius of the image-side surface of the fifth lens is CA10, a maximum image height of the optical lens assembly is IMH, and the following condition is satisfied: 1.98<(BFL-TDP10)/(CA10-IMH)<9.54.

IPC Classes  ?

• G02B 13/00 - Optical objectives specially designed for the purposes specified below
• G02B 9/60 - Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or – having five components only

Abstract

An optical lens assembly includes, in order from an object side to an image side: a first lens with negative refractive power; a second lens with negative refractive power; a third lens with positive refractive power; a fourth lens with positive refractive power; a fifth lens with negative refractive power; a sixth lens with positive refractive power; wherein a distance from an object-side surface of the first lens to an image plane along an optical axis is TL, an incident angle of a chief ray on the image plane at a maximum view angle of the optical lens assembly is CRA, a focal length of the optical lens assembly is f, and the following condition is satisfied: 51.73°

IPC Classes  ?

• G02B 9/62 - Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or – having six components only
• H04N 23/55 - Optical parts specially adapted for electronic image sensorsMounting thereof

Abstract

An optical lens assembly includes, in order from an object side to an image side: a first lens with positive refractive power; a second lens with negative refractive power; a third lens with negative refractive power; a fourth lens with positive refractive power; a fifth lens with negative refractive power; wherein the optical lens assembly has a total of five lenses with refractive power, a distance from an image-side surface of the fifth lens to an image plane along an optical axis is BFL, a thickness of the second lens along the optical axis is CT2, a thickness of the third lens along the optical axis is CT3, an incident angle of a chief ray on 80% of the maximum image height of the optical lens assembly is CRA8, and the following condition is satisfied: 51.97°

IPC Classes  ?

• G02B 13/00 - Optical objectives specially designed for the purposes specified below
• G02B 9/60 - Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or – having five components only

Abstract

An optical lens assembly includes, in order from a visual side to an image source side: an optical group including a partial-reflective-partial-transmissive element; and in order from the visual side to the image source side: an absorptive polarizer, a reflective polarizer, a phase retarder, a first lens, a second lens, and a third lens; wherein the partial-reflective-partial-transmissive element is disposed between the first lens and the third lens; at least one of the first lens and the second lens has a positive refractive power; when the focus of the optical lens assembly changes from a near point to a far point, the optical group moves from the image source side to the visual side. The optical lens assembly may become lightweight and have good image quality when satisfying a specific condition.

IPC Classes  ?

• G02B 17/08 - Catadioptric systems
• G02B 9/12 - Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or – having three components only
• G02B 25/00 - EyepiecesMagnifying glasses

Abstract

An optical lens assembly includes a stop, and includes, in order from an object side to an image side: a first lens, a second lens, a third lens, a fourth lens, a fifth lens and a sixth lens, wherein an incident angle where a main light is incident on an image plane at a maximum view angle of the optical lens assembly is CRA, a maximum optical effective radius of the image-side surface of the sixth lens is CA62, and the following conditions are satisfied: 9.27

IPC Classes  ?

• G02B 13/00 - Optical objectives specially designed for the purposes specified below
• G02B 9/62 - Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or – having six components only
• G02B 13/06 - Panoramic objectivesSo-called "sky lenses"

Abstract

An optical lens assembly includes a stop, and includes, in order from the object side to the image side: a first lens, a second lens, a third lens, a fourth lens, and fifth lens, wherein a focal length of the fifth lens is f5, a radius of curvature of an image-side surface of the fifth lens is R10, a distance between the stop to the image plane on the optical axis is SL, satisfying the relation: An optical lens assembly includes a stop, and includes, in order from the object side to the image side: a first lens, a second lens, a third lens, a fourth lens, and fifth lens, wherein a focal length of the fifth lens is f5, a radius of curvature of an image-side surface of the fifth lens is R10, a distance between the stop to the image plane on the optical axis is SL, satisfying the relation: 1.27

IPC Classes  ?

• G02B 9/60 - Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or – having five components only
• G02B 7/02 - Mountings, adjusting means, or light-tight connections, for optical elements for lenses
• G02B 13/00 - Optical objectives specially designed for the purposes specified below

Abstract

An optical lens assembly includes a phase retarder; a partial-reflective-partial-transmissive element; and in order from a visual side to an image source side: an absorptive polarizer, a reflective polarizer, a first lens with refractive power, a second lens with refractive power, and a third lens with positive refractive power; wherein the phase retarder and the partial-reflective-partial-transmissive element are sequentially arranged from the visual side to the image source side, and are disposed between the reflective polarizer and the third lens. The optical lens assembly may become lightweight and have good image quality when satisfying a specific condition.

IPC Classes  ?

• G02B 17/08 - Catadioptric systems
• G02B 5/30 - Polarising elements
• G06F 1/16 - Constructional details or arrangements

Abstract

An optical lens assembly includes a first lens; an optical element group including, in order from a visual side to an image source side: an absorptive polarizer, a reflective polarizer and a phase retarder; a second lens; a third lens; and a partial-reflective-partial-transmissive element. The first lens, the second lens, the third lens and the partial-reflective-partial-transmissive element are sequentially arranged from the visual side to the image source side. The optical element group is disposed between the first lens and the third lens. The phase retarder is disposed between the reflective polarizer and the third lens. The optical lens assembly may become lightweight and have good image quality when satisfying a specific condition.

IPC Classes  ?

• G02B 27/01 - Head-up displays
• G02B 9/12 - Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or – having three components only
• G02B 27/28 - Optical systems or apparatus not provided for by any of the groups , for polarising

Abstract

An optical lens assembly includes, an optical element group; and in order from a visual side to an image source side: a first lens with positive refractive power, a second lens with refractive power, a third lens with refractive power, and an image source-side surface of the third lens being convex in a paraxial region thereof, and a partial-reflective-partial-transmissive element. Wherein the optical element group is disposed between the first lens and the third lens, and includes, in order from the visual side to the image source side: an absorptive polarizer, a reflective polarizer and a phase retarder. The optical lens assembly may become lightweight and have good image quality when satisfying a specific condition.

IPC Classes  ?

• G02B 25/00 - EyepiecesMagnifying glasses
• G02B 27/01 - Head-up displays

Abstract

An optical lens assembly includes, in order from an object side to an image side: a first lens with negative refractive power; a second lens with positive refractive power; a third lens with positive refractive power; a fourth lens with positive refractive power; a fifth lens with negative refractive power; a sixth lens with positive refractive power; wherein a chief ray angle incident on an image plane at a maximum view angle of the optical lens assembly is CRA, a distance from the image-side surface of the sixth lens to the image plane along an optical axis is BFL, a focal length of the optical lens assembly is f, and the following condition is satisfied: An optical lens assembly includes, in order from an object side to an image side: a first lens with negative refractive power; a second lens with positive refractive power; a third lens with positive refractive power; a fourth lens with positive refractive power; a fifth lens with negative refractive power; a sixth lens with positive refractive power; wherein a chief ray angle incident on an image plane at a maximum view angle of the optical lens assembly is CRA, a distance from the image-side surface of the sixth lens to the image plane along an optical axis is BFL, a focal length of the optical lens assembly is f, and the following condition is satisfied: 0.54 ° / mm 2 < CRA / * BFL * f ) < 17.33 / mm 2 .

IPC Classes  ?

• G02B 9/62 - Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or – having six components only
• G02B 7/02 - Mountings, adjusting means, or light-tight connections, for optical elements for lenses
• G02B 13/00 - Optical objectives specially designed for the purposes specified below
• G02B 13/06 - Panoramic objectivesSo-called "sky lenses"

Abstract

An optical lens assembly includes, in order from a visual side to an image source side: an optical element including, in order from the visual side to the image source side: an absorptive polarizer, a reflective polarizer and a phase retarder; a first lens with refractive power, and an image source-side surface of the first lens being convex in a paraxial region thereof; and a second lens with refractive power, and a visual-side surface of the second lens being concave in a paraxial region thereof and provided with a partial-reflective-partial-transmissive element. The optical element is disposed on a visual-side surface of the first lens. The optical lens assembly may become lightweight and have good image quality when satisfying a specific condition.

IPC Classes  ?

• G02B 27/01 - Head-up displays
• G02B 5/30 - Polarising elements
• G02B 9/06 - Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or – having two components only two + components

Abstract

An optical lens assembly with a first optical axis and a second optical axis parallel to the first optical axis, includes a first element group located on an object side of the optical lens assembly; a second element group located on an image side of the optical lens assembly; and a light guide element disposed at the position where the first and second optical axes pass. The first and second element groups being located on the same side of the light guide element. The optical lens assembly has a long focal length, a compact size and a relatively higher illumination when satisfying a specific condition.

IPC Classes  ?

• G02B 13/00 - Optical objectives specially designed for the purposes specified below
• G02B 9/56 - Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or – having four components only arranged + –– + all components being simple lenses
• G03B 17/17 - Bodies with reflectors arranged in beam forming the photographic image, e.g. for reducing dimensions of camera

Abstract

An optical lens assembly includes: a first element group including: a first lens group with positive refractive power, including one or two lenses; a second element group including: a second lens group with positive refractive power, including two or three lenses; an optical element including, in order from a visual side to an image source side: an absorptive polarizer, a reflective polarizer and a first phase retarder; and a partial-reflective-partial-transmissive element; and a third element group including an image source plane. The first element group, the second element group and the third element group are arranged in order from the visual side to the image source side. When the optical lens assembly satisfies a specific condition, the weight of the device can be reduced, the zoom function can be provided, and the image quality can be ensured.

IPC Classes  ?

• G02B 13/00 - Optical objectives specially designed for the purposes specified below
• G02B 9/08 - Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or – having two components only two + components arranged about a stop
• G06F 1/16 - Constructional details or arrangements

Abstract

An optical lens assembly includes, in order from an object side to an image side: a stop, a first lens, a second lens, a third lens, a fourth lens, and fifth lens, wherein an Abbe number of the second lens is vd2, an Abbe number of the third lens is vd3, a central thickness of the second lens along the optical axis is CT2, a central thickness of the third lens along the optical axis is CT3, the aperture number of the optical lens assembly is Fno, an incident angle of a main light incident at the position of 60% of the maximum image height of the optical lens assembly is CRA6, and the following conditions are satisfied: 3.54<(vd3*CT3−vd2*CT2)/Fno<8.18 and 28.25

IPC Classes  ?

• G02B 13/00 - Optical objectives specially designed for the purposes specified below
• G02B 9/60 - Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or – having five components only

Abstract

An optical lens assembly includes a stop and includes, in order from an object side to an image side: a first lens, a second lens, a third lens, a fourth lens and a fifth lens. A focal length of the second lens is f2, a focal length of the third lens is f3, a focal length of the fourth lens is f4, a curvature radius of the object-side surface of the third lens is R5, a curvature radius of the object-side surface of the fourth lens is R7, a distance from the object-side surface of the first lens to the image plane along the optical axis is TL, and the following conditions are satisfied: 50.7

IPC Classes  ?

• G02B 9/60 - Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or – having five components only

Abstract

An optical focus adjustment module includes an operating ring; a first lens barrel disposed in the operating ring and including three grooves; a second lens barrel disposed in the first lens barrel and including one first protrusion portion and two second protrusion portions, wherein the first protrusion portion and the two second protrusion portions are disposed in the three grooves respectively and adapted to move parallel to a central axis; first and second optical lens assemblies disposed in the first and second lens barrels respectively; a gear disposed in the operating ring and meshed with an inner surface of the operating ring; and a screw rod disposed in a through hole of the first protrusion portion and rotationally synchronized with the gear and the operating ring, whereby the operating ring drives the second lens barrel, and then moves the second optical lens assembly to a predetermined position.

IPC Classes  ?

• G02B 7/04 - Mountings, adjusting means, or light-tight connections, for optical elements for lenses with mechanism for focusing or varying magnification
• G02B 25/00 - EyepiecesMagnifying glasses
• G06F 1/16 - Constructional details or arrangements

Abstract

An optical lens assembly includes, in order from an object side to an image side: a first lens with negative refractive power; a second lens with negative refractive power; a third lens with positive refractive power; a fourth lens with positive refractive power; a fifth lens with negative refractive power; a sixth lens with positive refractive power; and an IR band-pass filter. A maximum field of view of the optical lens assembly is FOV, a radius of curvature of an object-side surface of the second lens is R3, a radius of curvature of an image-side surface of the third lens is R6, an angle between a chief ray incident on an image plane at a maximum view angle of the optical lens assembly, and a normal line of the image plane is CRA, and the following condition is satisfied: −36.91

IPC Classes  ?

• G02B 13/00 - Optical objectives specially designed for the purposes specified below
• G02B 9/62 - Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or – having six components only
• G02B 5/20 - Filters
• G02B 7/02 - Mountings, adjusting means, or light-tight connections, for optical elements for lenses

Abstract

A lens module includes: a lens barrel including a annular structure, an inner annular surface surrounding the central axis and an outer annular surface opposite to and surrounding the inner annular surface, wherein the inner annular surface forms an accommodating space; an optical lens assembly and an optical filter sequentially disposed in the accommodating space from the object side to the image side; wherein the annular structure is disposed on the inner annular surface and surrounds the central axis, the annular structure includes at least two step portions and at least two bevel portions, all the step portions and the bevel portions are close to the image side, and the optical filter is disposed on the step portions; and the step portions and the bevel portions are alternately disposed along a annular path of the inner annular surface.

IPC Classes  ?

• G02B 7/14 - Mountings, adjusting means, or light-tight connections, for optical elements for lenses adapted to interchange lenses
• H04N 5/225 - Television cameras

Abstract

An optical lens assembly includes, in order from an object side to an image side: a first lens with negative refractive power; a second lens with negative refractive power; a third lens with positive refractive power; a stop; a fourth lens with positive refractive power; a fifth lens with negative refractive power; and a sixth lens with positive refractive power. Half of a maximum field of view of the optical lens assembly is HFOV, an entrance pupil diameter of the optical lens assembly is EPD, a distance from an object-side surface of the first lens to an image plane along an optical axis is TL, a central thickness of the fifth lens along the optical axis is CTS, a radius of curvature of an image-side surface of the fifth lens is R10. Following conditions are satisfied: 3.81 deg.

IPC Classes  ?

• G02B 13/00 - Optical objectives specially designed for the purposes specified below
• G02B 9/62 - Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or – having six components only

Abstract

An optical lens assembly includes, in order from an object side to an image side: a first lens; a stop; a second lens; a third lens; and an infrared bandpass filter, wherein a maximum field of view of the optical lens assembly is FOV, an f-number of the optical lens assembly is Fno, a radius of curvature of an object-side surface of the third lens is R5, a distance from an object-side surface of the first lens to an image plane along an optical axis is TL, an entrance pupil diameter of the optical lens assembly is EPD, a distance from the image-side surface of the first lens to the object-side surface of the second lens along the optical axis is T12, and the following conditions are satisfied: 19.82

IPC Classes  ?

• G02B 13/00 - Optical objectives specially designed for the purposes specified below
• G02B 9/12 - Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or – having three components only

Abstract

An optical lens assembly includes: a first element group, including a first lens group, a partial-reflective-partial-transmissive element and a first optical layer that is located on a visual-side surface of a lens of the first lens group closest to a visual side and includes, in order from the visual side to an image source side, a first absorptive polarizer, a reflective polarizer and a first phase retarder; a second element group, including a second lens group and an image source plane; and a second optical layer, located between the partial-reflective-partial-transmissive element and the image source plane and including, in order from the visual side to the image source side, a second phase retarder and a second absorptive polarizer. When the optical lens assembly satisfies a specific condition, the weight of the device can be reduced, the zoom function can be provided, and the image quality can be ensured.

IPC Classes  ?

• G02B 9/10 - Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or – having two components only one + and one – component
• G02B 9/08 - Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or – having two components only two + components arranged about a stop
• G06F 1/16 - Constructional details or arrangements

Abstract

A lens module includes: a barrel having a stepped portion including first and second stepped surfaces, wherein the first stepped surface is closer to a central axis than the second stepped surface; a front cover including a first portion and a second portion, wherein the first portion corresponds to the first stepped surface, the second portion corresponds to the second stepped surface, and the barrel is disposed in the front cover; an optical lens assembly disposed in the barrel and including a first lens, wherein an annular accommodating space is formed by an outer annular surface of the first lens, the first stepped surface of the barrel, and the first portion of the front cover; and an adhesive disposed in the annular accommodating space and in contact with the outer annular surface of the first lens, the first stepped surface, and the first portion.

IPC Classes  ?

• H04N 5/225 - Television cameras

Abstract

A component for a lens module is selected from a group consisting of a lens barrel, an optical lens, a pressure ring, and a spacer ring. The component includes: a component surface, a flat region located on the component surface, and a microstructure region located on the component surface and adjacent to the flat region. Relative to the flat region, the microstructure region includes a plurality of convex portions and a plurality of concave portions. The convex portions are in a shape of a cone. Any area of 0.1 mm*0.1 mm in the microstructure region has n convex portions, where n≤50.

IPC Classes  ?

• G02B 7/02 - Mountings, adjusting means, or light-tight connections, for optical elements for lenses
• G02B 5/26 - Reflecting filters
• G02B 5/00 - Optical elements other than lenses

Abstract

An optical lens assembly includes, in order from a visual side to an image source side: a first lens with positive refractive power; an optical element including, in order from the visual side to the image source side, an absorptive polarizer, a reflective polarizer and a first phase retarder; a second lens with positive refractive power; a partial-reflective-partial-transmissive element; a second phase retarder; and an image source plane. The optical lens assembly has a total of two lenses with refractive power. A focal length of the optical lens assembly is f, a maximum image-source height of the optical lens assembly is IMH, a focal length of the first lens is f1, a focal length of the second lens is f2, and following conditions are satisfied: 0.40

IPC Classes  ?

• G02B 27/28 - Optical systems or apparatus not provided for by any of the groups , for polarising
• G02B 25/00 - EyepiecesMagnifying glasses
• G02B 13/18 - Optical objectives specially designed for the purposes specified below with lenses having one or more non-spherical faces, e.g. for reducing geometrical aberration
• G02B 9/06 - Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or – having two components only two + components
• G06F 1/16 - Constructional details or arrangements

Abstract

An optical lens assembly includes, in order from a visual side to an image source side: a first group including a first lens group and an optical element, and the optical element including, in order from the visual side to the image source side: an absorptive polarizer, a reflective polarizer and a first phase retarder; a second group including, in order from the visual side to the image source side: a second lens group with positive refractive power and a partial-reflective-partial-transmissive element; and a third group including, in order from the visual side to the image source side: a second phase retarder and an image source plane. When the optical lens assembly satisfies certain conditions, the weight of the device can be reduced, the zooming function can be provided, and the image quality can be ensured.

IPC Classes  ?

• G02B 13/00 - Optical objectives specially designed for the purposes specified below
• G02B 9/04 - Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or – having two components only
• G06F 1/16 - Constructional details or arrangements

Abstract

An optical lens assembly includes, in order from an object-side to an image-side: a first lens, a stop, a second lens, a third lens, a fourth lens, a fifth lens, and a sixth lens, wherein half of a maximum field of view of the optical lens assembly is HFOV, an f-number of the optical lens assembly is Fno, a distance from an object-side surface of the first lens to an image plane along an optical axis is TL, a maximum image height of the optical lens assembly is IMH, a focal length of the optical lens assembly is f, a focal length of the first lens is f1, and the following conditions are satisfied: 0.73

IPC Classes  ?

• G02B 9/62 - Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or – having six components only
• G03B 17/12 - Bodies with means for supporting objectives, supplementary lenses, filters, masks, or turrets

Abstract

An optical element having stray light suppression structure includes: a ring body including a stray light suppression structure disposed on the inner peripheral surface thereof; the stray light suppression structure includes a plurality of stray light suppression protrusions and a plurality of stray light suppression grooves, each of the stray light suppression protrusions is a continuous structure that presents an S-shaped curve, the stray light suppression protrusions protrude from the inner peripheral surface at a same height, each of the stray light suppression protrusions includes a first stray light suppression end, a second stray light suppression end, and a connecting line passing through the first stray light suppression end and the second stray light suppression end. The connecting line does not coincide or intersect with the axis of the ring body.

IPC Classes  ?

• G03B 11/04 - Hoods or caps for eliminating unwanted light from lenses, viewfinders, or focusing aids

Abstract

An optical lens assembly includes, in order from the object side to the image side: a first lens with negative refractive power, a second lens with positive refractive power, a stop, a third lens with positive refractive power, a fourth lens with positive refractive power, a fifth lens with negative refractive power, and an IR band-pass filter. A maximum field of view of the optical lens assembly is FOV, a f-number of the optical lens assembly is Fno, a distance from an object-side surface of the first lens to an image plane along an optical axis is TL, a distance from an image-side surface of the fifth lens to the image plane along the optical axis is BFL, an entrance pupil diameter of the optical lens assembly is EPD, and the following conditions are satisfied: 0.58

IPC Classes  ?

• H04N 23/55 - Optical parts specially adapted for electronic image sensorsMounting thereof
• G02B 9/60 - Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or – having five components only
• G03B 17/12 - Bodies with means for supporting objectives, supplementary lenses, filters, masks, or turrets
• G02B 3/04 - Simple or compound lenses with non-spherical faces with continuous faces that are rotationally symmetrical but deviate from a true sphere
• G02B 13/00 - Optical objectives specially designed for the purposes specified below

Abstract

An optical lens assembly includes a stop and includes, in order from an object side to an image side: a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, and a seventh lens. A half of a maximum field of view of the optical lens assembly is HFOV, a distance from an image-side surface of the seventh lens to an image plane on an optical axis is BFL, a radius of curvature of an object-side surface of the fourth lens is R7, a radius of curvature of an image-side surface of the fourth lens is R8, and the following conditions are satisfied: 45

IPC Classes  ?

• G02B 13/00 - Optical objectives specially designed for the purposes specified below
• G02B 9/64 - Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or – having more than six components
• G03B 17/12 - Bodies with means for supporting objectives, supplementary lenses, filters, masks, or turrets

Abstract

A lens barrel defines a central axis, has an accommodating space, and includes: an object-side opening and an object-side end portion, both located at one end of the central axis, where the object-side end portion surrounds the object-side opening and has an object-side surface, the object-side surface includes an annular groove, a radial cross-section of the annular groove has a first line segment and a second line segment, the first line segment is farther away from the central axis than the second line segment, and the first line segment and the second line segment intersect at a first point, a included angle is formed between the first line segment and the second line segment; and an image-side opening; wherein 15 degrees≤the included angle≤90 degrees, and an opening direction of the radial cross-section of the annular groove is away from the central axis.

IPC Classes  ?

• G03B 17/12 - Bodies with means for supporting objectives, supplementary lenses, filters, masks, or turrets
• G02B 7/10 - Mountings, adjusting means, or light-tight connections, for optical elements for lenses with mechanism for focusing or varying magnification by relative axial movement of several lenses, e.g. of varifocal objective lens
• H04N 5/225 - Television cameras
• G06V 40/13 - Sensors therefor

Abstract

A photographing module includes a lens barrel, an optical lens assembly, an image sensor, the optical lens assembly includes, in order from the object side to the image side: a first lens with negative refractive power, a second lens with negative refractive power, a third lens with positive refractive power, a stop, a fourth lens with positive refractive power, a fifth lens with negative refractive power, a sixth lens with positive refractive power, a seventh lens with positive refractive power, wherein a distance from an object-side surface of the first lens to the image plane along an optical axis is TL, half of a diagonal length of an effective pixel area of the image sensor is IMH, an angle of a chief ray of a maximum view angle of the optical lens assembly which incident to the image plane is CRA, following condition is satisfied: 0.34

IPC Classes  ?

• G02B 13/00 - Optical objectives specially designed for the purposes specified below
• G02B 9/64 - Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or – having more than six components
• H04N 5/225 - Television cameras

Abstract

An optical lens assembly includes, in order from the object side to the image side: a stop, a first lens element, a second lens element, a third lens element, and an infrared bandpass filter. An entrance pupil diameter of the optical lens assembly is EPD, a half of a maximum field of view of the optical lens assembly is HFOV, and the following condition is satisfied: 0.59

IPC Classes  ?

• H04N 5/225 - Television cameras
• G02B 3/04 - Simple or compound lenses with non-spherical faces with continuous faces that are rotationally symmetrical but deviate from a true sphere
• G02B 9/12 - Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or – having three components only
• G03B 17/14 - Bodies with means for supporting objectives, supplementary lenses, filters, masks, or turrets interchangeably
• G02B 13/00 - Optical objectives specially designed for the purposes specified below
• G02B 5/20 - Filters
• G02B 27/00 - Optical systems or apparatus not provided for by any of the groups ,

Abstract

An optical lens assembly includes, in order from the object side to the image side: a first lens with negative refractive power, a second lens with negative refractive power, a third lens with positive refractive power, a stop, a fourth lens with positive refractive power, a fifth lens with negative refractive power, a sixth lens with positive refractive power, and a seventh lens with negative refractive power, wherein a focal length of the first lens is f1, a focal length of the sixth lens is f6, and following condition is satisfied: −5.74

IPC Classes  ?

• G02B 13/00 - Optical objectives specially designed for the purposes specified below
• G02B 9/64 - Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or – having more than six components

Abstract

An optical lens assembly includes, in order from the object side to the image side: a stop, a first lens with positive refractive power, a second lens with negative refractive power, a third lens with positive refractive power, a fourth lens with positive refractive power, and a fifth lens with negative refractive power, wherein half of a maximum view angle (field of view) of the optical lens assembly is HFOV, a radius of curvature of an object-side surface of the fifth lens is R9, a focal length of the optical lens assembly is f, and following condition is satisfied: −79.81

IPC Classes  ?

• G02B 13/00 - Optical objectives specially designed for the purposes specified below
• G02B 9/60 - Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or – having five components only
• G02B 27/00 - Optical systems or apparatus not provided for by any of the groups ,

Abstract

An optical lens assembly includes, in order from the object side to the image side: a stop, a first lens, a second lens, a third lens, and an IR band-pass filter, wherein half of a maximum view angle (field of view) of the optical lens assembly is HFOV, a radius of curvature of an image-side surface of the third lens is R6, a focal length of the optical lens assembly is f, and following condition is satisfied: −6.83

IPC Classes  ?

• G02B 13/00 - Optical objectives specially designed for the purposes specified below
• G02B 5/20 - Filters
• G02B 9/12 - Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or – having three components only
• G02B 27/00 - Optical systems or apparatus not provided for by any of the groups ,

Abstract

An infrared projection lens assembly includes, in order from the image side to the image source side: a stop, a first lens with positive refractive power, a second lens with refractive power, and a third lens with positive refractive power, wherein a radius of curvature of an image-side surface of the first lens is R1, half of a maximum view angle (field of view) of the infrared projection lens assembly is HFOV, a focal length of the infrared projection lens assembly is f, and following condition is satisfied: −18.2

IPC Classes  ?

• G02B 13/00 - Optical objectives specially designed for the purposes specified below
• G02B 9/12 - Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or – having three components only
• G02B 27/00 - Optical systems or apparatus not provided for by any of the groups ,
• G02B 13/14 - Optical objectives specially designed for the purposes specified below for use with infrared or ultraviolet radiation

Abstract

A lens module includes a lens barrel and a first optical lens. The lens barrel includes a first lens chamber and a second lens chamber arranged along an optical axis, wherein an inner edge surface of the lens barrel has an extension portion, the extension portion is located between the first lens chamber and the second lens chamber and defines a light-passing hole, and the first lens chamber communicates with the second lens chamber via the light-passing hole. The first optical lens is disposed in the first lens chamber and has a first optical zone surrounding the optical axis and a first non-optical zone surrounding an outside of the first optical zone, wherein the first non-optical zone includes a first protrusion, and the first protrusion is disposed in the light-passing hole.

IPC Classes  ?

• G02B 7/02 - Mountings, adjusting means, or light-tight connections, for optical elements for lenses
• G02B 13/18 - Optical objectives specially designed for the purposes specified below with lenses having one or more non-spherical faces, e.g. for reducing geometrical aberration

Abstract

An optical lens assembly includes, in order from the object side to the image side: a first lens with positive refractive power, a stop, a second lens with negative refractive power, a third lens with negative refractive power, a fourth lens with positive refractive power, wherein a focal length of the optical lens assembly is f, the optical lens assembly has a maximum view angle (field of view) FOV, and following condition is satisfied: 0.16

IPC Classes  ?

• G02B 13/00 - Optical objectives specially designed for the purposes specified below
• G02B 5/20 - Filters
• G02B 9/34 - Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or – having four components only
• G02B 13/02 - Telephoto objectives, i.e. systems of the type + – in which the distance from the front vertex to the image plane is less than the equivalent focal length
• G02B 27/00 - Optical systems or apparatus not provided for by any of the groups ,

Abstract

An optical lens system includes, in order from the object side to the image side: a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, an IR band-pass filter, wherein a stop is disposed before an object-side surface of the first lens or between an image-side surface of the first lens and an object-side surface of the second lens, a distance from the stop to an image plane along the optical axis is TSI, a distance from the object-side surface of the first lens to the image plane along the optical axis is TL, a distance from an image-side surface of the sixth lens to the image plane along the optical axis is BFL, a focal length of the optical lens system is f, following condition is satisfied: 0.25 mm−1

IPC Classes  ?

• G02B 13/00 - Optical objectives specially designed for the purposes specified below
• G02B 9/62 - Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or – having six components only
• G03B 17/12 - Bodies with means for supporting objectives, supplementary lenses, filters, masks, or turrets
• G02B 5/20 - Filters
• G02B 27/00 - Optical systems or apparatus not provided for by any of the groups ,

Abstract

An optical lens system includes, in order from the object side to the image side: a first lens with negative refractive power, a stop, a second lens with positive refractive power, and a third lens with positive refractive power, wherein a distance from an object-side surface of the first lens to an image-side surface of the third lens along an optical axis is TD, a distance from the image-side surface of the third lens to an image plane along the optical axis is BFL, half of a maximum view angle (field of view) of the optical lens system is HFOV, an incident pupil aperture of the optical lens system is EPD, and following conditions are satisfied: 1.82

Abstract

A three-piece compact optical lens system includes, in order from the object side to the image side: a flat panel assembly, a first lens element; a stop; a second lens element; and a third lens element. Wherein a distance from an object to an image plane along the optical axis is OTL, a distance from an image-side surface of the flat panel to the image plane along the optical axis is PTL, an image height of the image plane is Y, an object height of a chief ray of the image height of the image plane which corresponds to the image-side surface of the flat panel is P, and they satisfy the relations: 2.5 mm

IPC Classes  ?

• G02B 13/00 - Optical objectives specially designed for the purposes specified below
• G02B 9/12 - Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or – having three components only

Abstract

An optical lens system includes, in order from the object side to the image side: a stop, a first lens with positive refractive power, a second lens with positive refractive power, a third lens with negative refractive power, wherein a distance from an image-side surface of the third lens to an image plane along an optical axis is BFL, a distance from an object-side surface of the first lens to the image plane along the optical axis is TL, following condition is satisfied: 0.38

IPC Classes  ?

• G02B 9/12 - Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or – having three components only
• G02B 13/00 - Optical objectives specially designed for the purposes specified below
• G03B 17/12 - Bodies with means for supporting objectives, supplementary lenses, filters, masks, or turrets

Abstract

An imaging lens assembly of an optical verification system with a FOV greater than 120 degrees, and includes optical lenses from an object side to an image side. The one of the optical lens being the closest to the object side includes: an object side surface and an image side surface of an optical zone; an object side surface of a non-optical-zone surrounding the object side surface of the optical zone; an image side surface of a non-optical zone surrounding the image side surface of the optical zone; and a first connection portion disposed between the image side surface of the optical-zone and the image side surface of the non-optical zone, wherein a first angle between a tangential direction of a surface of the first connection portion and the radial direction is in a range of 15 to 50 degrees.

IPC Classes  ?

• G02B 9/12 - Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or – having three components only
• G02B 5/20 - Filters
• G02B 7/20 - Light-tight connections for movable optical elements

Abstract

A five-piece infrared single focus lens system includes, in order from the object side to the image side: a stop, a first lens element with a positive refractive power, a second lens element, a third lens element with a positive refractive power, a fourth lens element, a fifth lens element, wherein a focal length of the first lens element is f1, a focal length of the third lens element is f3, a central thickness of the first lens element along an optical axis is CT1, a central thickness of the third lens element along the optical axis is CT3, a radius of curvature of an object-side surface of the first lens element is R1, a radius of curvature of an object-side surface of the third lens element is R5, satisfying the relation: −1.60<(f1×CT1×R1)/(f3×CT3×R5)<2.43. Such a system has a wide field of view, high resolution, short length and less distortion.

IPC Classes  ?

• G02B 13/00 - Optical objectives specially designed for the purposes specified below
• G02B 13/14 - Optical objectives specially designed for the purposes specified below for use with infrared or ultraviolet radiation
• G02B 9/60 - Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or – having five components only

Abstract

A five-piece infrared single wavelength lens system includes, in order from the object side to the image side: a first lens element with a negative refractive power, a stop, a second lens element with a positive refractive power, a third lens element with a negative refractive power, a fourth lens element with a positive refractive power, and a fifth lens element with a negative refractive power, where a radius of curvature of an object-side surface of the third lens element is R5, a central thickness of the third lens element along an optical axis is CT3, and they satisfy the relation: 5

IPC Classes  ?

• G02B 13/00 - Optical objectives specially designed for the purposes specified below
• G02B 9/60 - Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or – having five components only

Abstract

A four-piece infrared wavelength lens system includes, in order from the object side to the image side: a first lens element with a positive refractive power, a stop, a second lens element with a refractive power, a third lens element with a positive refractive power, a fourth lens element with a negative refractive power, wherein a focal length of the first lens element and the second lens element combined is f12, a focal length of the third lens element and the fourth lens element combined is f34, and they satisfy the relation: 0.2

IPC Classes  ?

• G02B 13/00 - Optical objectives specially designed for the purposes specified below
• G02B 9/34 - Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or – having four components only

Abstract

A five-piece optical lens system with a wide field of view includes, in order from the object side to the image side: a first lens element with a negative refractive power, a stop, a second lens element with a positive refractive power, a third lens element with a negative refractive power, a fourth lens element with a positive refractive power, a fifth lens element with a negative refractive power, wherein a central thickness of the first lens element along an optical axis is CT1, a central thickness of the third lens element along the optical axis is CT3, a central thickness of the fourth lens element along the optical axis is CT4, a central thickness of the fifth lens element along the optical axis is CT5, satisfying the relations: 0.69

IPC Classes  ?

• G02B 9/60 - Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or – having five components only
• G02B 13/00 - Optical objectives specially designed for the purposes specified below

Abstract

A micro lens assembly for short-range imaging, in order from the object side to the image side: a flat panel, a first lens group, a stop, a second lens group, and an IR cut filter. Wherein a focal length of the first lens group combined is LF, a focal length of the second lens group combined is RF, a distance from an object to be imaged to an object-side surface of a first lens element of the first lens group along an optical axis is OTL, a distance from the object to be imaged to an image plane along the optical axis is TTL, and they satisfy the relations: LF>0; RF>0; 0.65

IPC Classes  ?

• G02B 9/06 - Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or – having two components only two + components
• G02B 13/00 - Optical objectives specially designed for the purposes specified below
• G02B 5/20 - Filters
• G02B 9/64 - Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or – having more than six components

Abstract

A six-piece optical lens system includes, in order from the object side to the image side: a stop, a first lens element with a positive refractive power, a second lens element with a negative refractive power, a third lens element with a refractive power, a fourth lens element with a negative refractive power, a fifth lens element with a positive refractive power, and a sixth lens element with a negative refractive power. Such arrangements can provide a miniaturized six-piece optical lens system having a big stop and high image quality.

IPC Classes  ?

• G02B 13/00 - Optical objectives specially designed for the purposes specified below
• H04N 5/225 - Television cameras
• G02B 9/62 - Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or – having six components only

Abstract

A four-piece optical lens system includes, in order from the object side to the image side: a stop; a first lens element with a positive refractive power; a second lens element with a negative refractive power; a third lens element with a positive refractive power; a fourth lens element with a negative refractive power, wherein a focal length of the first lens element and the second lens element combined is f12, a focal length of the third lens element is 13, and they satisfy the relation: 0.6

IPC Classes  ?

• G02B 9/34 - Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or – having four components only
• G02B 13/00 - Optical objectives specially designed for the purposes specified below
• H04N 5/225 - Television cameras

Abstract

A three-piece infrared single wavelength projection lens system, in order from an image side to an image source side: a stop; a first lens element with a positive refractive power having an image-side surface being convex near an optical axis and an image source-side surface being concave near the optical axis; a second lens element with a negative refractive power having an image source-side surface being concave near the optical axis; and a third lens element with a positive refractive power having an image-side surface being concave near the optical axis and an image source-side surface being convex near the optical axis. Such arrangements can provide a three-piece infrared single wavelength projection lens system with better image sensing function.

IPC Classes  ?

• G02B 9/14 - Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or – having three components only arranged + – +
• G02B 13/14 - Optical objectives specially designed for the purposes specified below for use with infrared or ultraviolet radiation
• G03B 21/14 - Projectors or projection-type viewersAccessories therefor Details
• G02B 13/00 - Optical objectives specially designed for the purposes specified below

Abstract

An optical element is ring-shaped and has an inner peripheral face. The inner peripheral face is formed with a bumpy section. The bumpy section is formed with a plurality of grooves. The grooves are disposed around an axial direction of the optical element. A rib is formed between any adjacent two of the grooves. Each of the grooves has a fifth end and a sixth end along the axial direction. A width of each of the grooves along a circumferential direction is increasing from the sixth end toward the fifth end so that a third angle between two lateral walls of each of the grooves is larger than 0 degree but smaller than 90 degrees.

IPC Classes  ?

• G02B 7/02 - Mountings, adjusting means, or light-tight connections, for optical elements for lenses

Abstract

A four-piece dual waveband optical lens system includes, in order from the object side to the image side: a stop; a first lens element with a positive refractive power having an object-side surface being convex near an optical axis, an image-side surface being convex near the optical axis; a second lens element with a negative refractive power having an object-side surface being concave near the optical axis, an image-side surface being convex near the optical axis; a third lens element with a positive refractive power having an object-side surface being concave near the optical axis, an image-side surface being convex near the optical axis; a fourth lens element with a negative refractive power having an object-side surface being convex near the optical axis, an image-side surface being concave near the optical axis, which has a short length and good performance without re-focusing in visible light and infrared dual waveband.

IPC Classes  ?

• G02B 7/02 - Mountings, adjusting means, or light-tight connections, for optical elements for lenses
• G02B 9/34 - Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or – having four components only

Abstract

A five-piece optical lens system with a wide field of view includes, in order from the object side to the image side: a first lens element with a negative refractive power, a stop, a second lens element with a positive refractive power, a third lens element with a negative refractive power, a fourth lens element with a positive refractive power, a fifth lens element with a negative refractive power, a radius of curvature of an object-side surface of the second lens element is R3, a radius of curvature of an image-side surface of the second lens element is R4, focal lengths of the system, first, second and fourth lens elements are f, f1, f2, f4, respectively, satisfying the relations: 1.9 mm

IPC Classes  ?

• G02B 13/00 - Optical objectives specially designed for the purposes specified below
• G02B 9/60 - Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or – having five components only
• G02B 13/06 - Panoramic objectivesSo-called "sky lenses"

Abstract

A three-piece compact optical lens system includes, in order from the object side to the image side: a flat panel assembly made of glass, a first lens element with a negative refractive power having an object-side surface being concave near an optical axis; a stop; a second lens element with a positive refractive power having an object-side surface being convex near the optical axis and an image-side surface being convex near the optical axis; and a third lens element with a positive refractive power. Such a system can not only effectively collect light at a large angle, receive a wider range of images and achieve identification effects within very short distances, but also can reduce the distance between an object and the three-piece compact optical lens system, reduce the volume effectively and maintain its miniaturization.

IPC Classes  ?

• G02B 13/00 - Optical objectives specially designed for the purposes specified below
• G02B 9/12 - Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or – having three components only
• G06K 9/00 - Methods or arrangements for reading or recognising printed or written characters or for recognising patterns, e.g. fingerprints

Abstract

A compact optical lens system includes, in order from the object side to the image side: a flat panel assembly made of glass, a first lens element with a negative refractive power, at least one of an object-side surface and an image-side surface of the first lens element being aspheric, a stop; and a second lens element with a positive refractive power having an object-side surface being convex near an optical axis and an image-side surface being convex near the optical axis, at least one of the object-side surface and the image-side surface of the second lens element being aspheric. Such a system can not only effectively collect light at a large angle, receive a wider range of images and achieve identification effects within very short distances, but also can reduce the distance between an object and the compact optical lens system, reduce the volume effectively and maintain its miniaturization.

IPC Classes  ?

• G02B 13/18 - Optical objectives specially designed for the purposes specified below with lenses having one or more non-spherical faces, e.g. for reducing geometrical aberration
• G02B 9/04 - Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or – having two components only
• G02B 13/00 - Optical objectives specially designed for the purposes specified below
• G02B 9/10 - Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or – having two components only one + and one – component

Abstract

A four-piece infrared single wavelength lens system includes, in order from the object side to the image side: a stop, a first lens element with a refractive power having an object-side surface being convex near an optical axis, a second lens element with a positive refractive power, a third lens element with a positive refractive power having an object-side surface being concave near the optical axis and an image-side surface being convex near the optical axis, a fourth lens element with a negative refractive power having an object-side surface being convex near the optical axis and an image-side surface being concave near the optical axis. Such arrangements can provide a four-piece infrared single wavelength lens system which has a wide field of view, large stop, short length and less distortion.

IPC Classes  ?

• G02B 9/34 - Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or – having four components only
• G02B 9/58 - Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or – having four components only arranged – + + –
• G02B 13/00 - Optical objectives specially designed for the purposes specified below
• G02B 27/00 - Optical systems or apparatus not provided for by any of the groups ,
• G02B 13/14 - Optical objectives specially designed for the purposes specified below for use with infrared or ultraviolet radiation
• G02B 3/02 - Simple or compound lenses with non-spherical faces
• G02B 3/04 - Simple or compound lenses with non-spherical faces with continuous faces that are rotationally symmetrical but deviate from a true sphere
• G02B 13/18 - Optical objectives specially designed for the purposes specified below with lenses having one or more non-spherical faces, e.g. for reducing geometrical aberration

Abstract

A four-piece infrared single wavelength lens system includes, in order from the object side to the image side: a first lens element with a positive refractive power having an object-side surface being convex near an optical axis and an image-side surface being concave near the optical axis, a stop, a second lens element with a refractive power, a third lens element with a positive refractive power having an object-side surface being concave near the optical axis and an image-side surface being convex near the optical axis, a fourth lens element with a negative refractive power having an object-side surface being convex near the optical axis and an image-side surface being concave near the optical axis. Such arrangements can provide a four-piece infrared single wavelength lens system which has a wide field of view, high resolution, short length and less distortion.

IPC Classes  ?

• G02B 13/14 - Optical objectives specially designed for the purposes specified below for use with infrared or ultraviolet radiation
• G02B 9/34 - Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or – having four components only
• G02B 13/06 - Panoramic objectivesSo-called "sky lenses"
• G02B 27/09 - Beam shaping, e.g. changing the cross-sectioned area, not otherwise provided for
• G02B 13/00 - Optical objectives specially designed for the purposes specified below

Abstract

A four-piece infrared single wavelength projection lens system in accordance with the present invention comprises, in order from an image side to an image source side: a stop; a first lens element with a positive refractive power having an image-side surface being convex near an optical axis, the first lens element is made of glass material; a second lens element with a refractive power having an image-side surface being convex near the optical axis and an image source-side surface being concave near the optical axis; a third lens element with a negative refractive power having an image-side surface being concave near the optical axis and an image source-side surface being concave near the optical axis; and a fourth lens element with a positive refractive power having an image-side surface being concave near the optical axis and an image source-side surface being convex near the optical axis.

IPC Classes  ?

• G02B 13/14 - Optical objectives specially designed for the purposes specified below for use with infrared or ultraviolet radiation
• G02B 9/34 - Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or – having four components only
• G02B 13/06 - Panoramic objectivesSo-called "sky lenses"
• G02B 27/09 - Beam shaping, e.g. changing the cross-sectioned area, not otherwise provided for
• G02B 13/00 - Optical objectives specially designed for the purposes specified below

Abstract

A two-piece infrared single wavelength projection lens system includes, in order from an image side to an image source side: a first lens element with a positive refractive power having an image-side surface being convex near an optical axis and an image source-side surface being concave near the optical axis, at least one of the image-side and the image source-side surfaces of the first lens element being aspheric; a second lens element with a positive refractive power having an image-side surface being concave near the optical axis and an image source-side surface being convex near the optical axis, at least one of the image-side and the image source-side surfaces of the second lens element being aspheric; and a stop disposed before the image source-side surface of the first lens element or between the image source-side surface of the first lens element and an image-side surface of the second lens element.

IPC Classes  ?

• G02B 13/14 - Optical objectives specially designed for the purposes specified below for use with infrared or ultraviolet radiation
• G02B 9/06 - Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or – having two components only two + components
• G02B 9/08 - Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or – having two components only two + components arranged about a stop

Abstract

A three-piece infrared single wavelength projection lens system includes, in order from an image side to an image source side: a first lens element with a positive refractive power; a second lens element with a negative refractive power; a third lens element with a positive refractive power; and a stop disposed before an image source-side surface of the first lens element or between an image-side surface of the first lens element and an image source-side surface of the second lens element. Such arrangements can provide a three-piece infrared single wavelength projection lens system with better image sensing function.

IPC Classes  ?

• G02B 13/00 - Optical objectives specially designed for the purposes specified below
• G02B 9/16 - Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or – having three components only arranged + – + all the components being simple

Abstract

A three-piece infrared single wavelength projection lens system includes, in order from an image side to an image source side: a first lens element with a positive refractive power; a second lens element with a refractive power; a third lens element with a positive refractive power; a stop disposed before an image source-side surface of the first lens element or between the image source-side surface of the first lens element and an image source-side surface of the second lens element; and the first lens element or the second lens element is made of glass. Such arrangements can provide a three-piece infrared single wavelength projection lens system with better image sensing function.

IPC Classes  ?

• G02B 13/14 - Optical objectives specially designed for the purposes specified below for use with infrared or ultraviolet radiation
• G02B 13/00 - Optical objectives specially designed for the purposes specified below
• G02B 9/12 - Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or – having three components only
• G02B 1/04 - Optical elements characterised by the material of which they are madeOptical coatings for optical elements made of organic materials, e.g. plastics
• G01S 1/00 - Beacons or beacon systems transmitting signals having a characteristic or characteristics capable of being detected by non-directional receivers and defining directions, positions, or position lines fixed relatively to the beacon transmittersReceivers co-operating therewith

Abstract

A four-piece optical lens system includes, in order from the object side to the image side: a stop, a first lens element with a positive refractive power, a second lens element with a negative refractive power, a third lens element with a positive refractive power, a fourth lens element with a negative refractive power. Such arrangements not only can be applied to a portable electronic product, but also has a long focal length, high pixel and low height.

IPC Classes  ?

• G02B 9/34 - Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or – having four components only
• G02B 13/00 - Optical objectives specially designed for the purposes specified below

Abstract

A five-piece optical lens system with a wide field of view includes, in order from the object side to the image side: a first lens element with a negative refractive power, the first lens element being made of glass, a second lens element with a positive refractive power, a stop, a third lens element with a positive refractive power, a fourth lens element with a negative refractive power, a fifth lens element with a positive refractive power. Such arrangements can provide a five-piece optical lens system which has a wide field of view, high resolution, short length and less distortion.

IPC Classes  ?

• G02B 13/00 - Optical objectives specially designed for the purposes specified below
• G02B 9/60 - Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or – having five components only
• G02B 13/06 - Panoramic objectivesSo-called "sky lenses"

Abstract

A four-piece infrared single wavelength lens system includes, in order from the object side to the image side: a stop, a first lens element with a positive refractive power, a second lens element with a positive refractive power, a third lens element with a negative refractive power, a fourth lens element with a positive refractive power. Such arrangements can provide a four-piece infrared single wavelength lens system which has a wide field of view, high resolution, short length and less distortion.

IPC Classes  ?

• G02B 13/18 - Optical objectives specially designed for the purposes specified below with lenses having one or more non-spherical faces, e.g. for reducing geometrical aberration
• G02B 3/02 - Simple or compound lenses with non-spherical faces
• G02B 13/00 - Optical objectives specially designed for the purposes specified below
• G02B 9/34 - Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or – having four components only
• G02B 27/00 - Optical systems or apparatus not provided for by any of the groups ,

Abstract

A six-piece optical lens system with a wide field of view includes, in order from the object side to the image side: a first lens element with a negative refractive power, a second lens element with a positive refractive power, a stop, a third lens element with a positive refractive power, a fourth lens element with a negative refractive power, a fifth lens element with a positive refractive power. Such arrangements can provide a six-piece optical lens system which has a wide field of view, high resolution, short length and less distortion.

IPC Classes  ?

• G02B 9/62 - Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or – having six components only
• G02B 13/00 - Optical objectives specially designed for the purposes specified below
• G02B 13/06 - Panoramic objectivesSo-called "sky lenses"

Abstract

A five-piece optical lens system with a wide field of view includes, in order from the object side to the image side: a first lens element with a negative refractive power, a stop, a second lens element with a positive refractive power, a third lens element with a negative refractive power, a fourth lens element with a positive refractive power, a fifth lens element with a negative refractive power. Such arrangements can provide a five-piece optical lens system which has a wide field of view, high resolution, short length and less distortion.

IPC Classes  ?

• G02B 13/00 - Optical objectives specially designed for the purposes specified below
• G02B 13/18 - Optical objectives specially designed for the purposes specified below with lenses having one or more non-spherical faces, e.g. for reducing geometrical aberration
• G02B 9/60 - Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or – having five components only

Abstract

A six-piece microscope lens system includes, in order from the object side to the image side: a first lens element with a positive refractive power, a stop, a second lens element with a positive refractive power, a third lens element with a negative refractive power, a fourth lens element with a positive refractive power, a fifth lens element with a positive refractive power, a sixth lens element with a negative refractive power. Such arrangements can reduce the volume so as to reduce the manufacturing cost, has high pixel and image magnification 4.5×, and can detect biological fluid.

IPC Classes  ?

• G02B 21/02 - Objectives
• G02B 9/62 - Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or – having six components only
• G02B 13/18 - Optical objectives specially designed for the purposes specified below with lenses having one or more non-spherical faces, e.g. for reducing geometrical aberration
• G02B 13/00 - Optical objectives specially designed for the purposes specified below

Abstract

A four-piece infrared single wavelength lens system, in order from an object side to an image side, includes: an aperture stop; a first lens element with a positive refractive power having an object-side surface being convex and an image-side surface being concave near the optical axis; a second lens element with a positive refractive power having an object-side surface being concave and an image-side surface being convex near the optical axis; a third lens element with a refractive power having an object-side surface being concave and an image-side surface being convex near the optical axis; and a fourth lens element with a refractive power having an object-side surface being convex and an image-side surface being concave near the optical axis, and at least one inflection point being formed on one of the object-side surface and the image-side surface of the fourth lens element.

IPC Classes  ?

• G02B 13/00 - Optical objectives specially designed for the purposes specified below

Abstract

A six-piece optical lens system includes, in order from the object side to the image side: a stop, a first lens element with a positive refractive power, a second lens element with a negative refractive power, a third lens element with a positive refractive power, a fourth lens element with a negative refractive power, a fifth lens element with a positive refractive power, and a sixth lens element with a negative refractive power. Such arrangements can provide a miniaturized six-piece optical lens system having a big stop and high image quality.

IPC Classes  ?

• G02B 13/00 - Optical objectives specially designed for the purposes specified below
• G02B 9/62 - Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or – having six components only
• G02B 5/20 - Filters

Abstract

A five-piece optical imaging lens, in order from an object side to an image side, includes: an aperture stop; a first lens element with a positive refractive power having an object-side surface being convex near an optical axis and the image-side surface being concave near the optical axis; a second lens element with a negative refractive power having an object-side surface being convex near the optical axis and an image-side surface being concave near the optical axis; a third lens element with a negative refractive power having an image-side surface being concave near the optical axis; a fourth lens element with a positive refractive power having an object-side surface being concave near the optical axis and an image-side surface being convex near the optical axis; a fifth lens element with a negative refractive power having an image-side surface being concave near the optical axis.

IPC Classes  ?

• G02B 9/60 - Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or – having five components only
• G02B 13/00 - Optical objectives specially designed for the purposes specified below
• G02B 5/20 - Filters

Abstract

A six-piece optical lens system with a wide field of view includes, in order from the object side to the image side: a first lens element with a negative refractive power, a second lens element with a positive refractive power, a stop, a third lens element with a positive refractive power, a fourth lens element with a negative refractive power, a fifth lens element with a positive refractive power, a sixth lens element with a negative refractive power. Abbe numbers of the third, fourth, fifth, sixth lens elements are V3, V4, V5, V6, a focal length of the six-piece optical lens system with a wide field of view is f, a distance from an object-side surface of the first lens element to an image plane along an optical axis is TL, satisfying the relations: 29

IPC Classes  ?

• G02B 13/18 - Optical objectives specially designed for the purposes specified below with lenses having one or more non-spherical faces, e.g. for reducing geometrical aberration
• G02B 3/02 - Simple or compound lenses with non-spherical faces
• G02B 9/60 - Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or – having five components only
• G02B 13/00 - Optical objectives specially designed for the purposes specified below
• G02B 9/62 - Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or – having six components only
• G02B 5/00 - Optical elements other than lenses
• G02B 5/20 - Filters
• G02B 27/00 - Optical systems or apparatus not provided for by any of the groups ,

Abstract

An optical lens system with a wide field of view includes, in order from the object side to the image side: a stop, a first lens element with a negative refractive power, a second lens element with a positive refractive power, a third lens element with a negative refractive power, a fourth lens element with a positive refractive power, and a fifth lens element with a negative refractive power. Such arrangements can provide a five-piece optical lens system which has a wide field of view, high resolution, short length and less distortion.

IPC Classes  ?

• G02B 13/18 - Optical objectives specially designed for the purposes specified below with lenses having one or more non-spherical faces, e.g. for reducing geometrical aberration
• G02B 13/00 - Optical objectives specially designed for the purposes specified below
• G02B 5/00 - Optical elements other than lenses
• G02B 9/60 - Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or – having five components only
• G02B 5/20 - Filters
• G02B 27/00 - Optical systems or apparatus not provided for by any of the groups ,

Abstract

A three-piece infrared single wavelength lens system includes, in order from the object side to the image side: a stop, a first lens element with a positive refractive power, a second lens element with a positive refractive power, and a third lens element with a positive refractive power. The focal length of the first lens element is f1, the focal length of the second lens element and the third lens element combined is f23, and they satisfy the relation: 0.5

IPC Classes  ?

• G02B 13/14 - Optical objectives specially designed for the purposes specified below for use with infrared or ultraviolet radiation
• G02B 9/12 - Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or – having three components only
• G02B 13/00 - Optical objectives specially designed for the purposes specified below
• G02B 5/20 - Filters
• G02B 27/00 - Optical systems or apparatus not provided for by any of the groups ,

Abstract

A four-piece infrared single wavelength lens system includes, in order from the object side to the image side: a first lens element with a refractive power, a stop, a second lens element with a positive refractive power, a third lens element with a positive refractive power, and a fourth lens element with a positive refractive power. The focal length of the first lens element is f1, the focal length of the second lens element and the third lens element combined is f23, and they satisfy the relation: −210

IPC Classes  ?

• G02B 13/14 - Optical objectives specially designed for the purposes specified below for use with infrared or ultraviolet radiation
• G02B 13/18 - Optical objectives specially designed for the purposes specified below with lenses having one or more non-spherical faces, e.g. for reducing geometrical aberration
• G02B 13/00 - Optical objectives specially designed for the purposes specified below
• G02B 9/34 - Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or – having four components only
• G02B 27/00 - Optical systems or apparatus not provided for by any of the groups ,

Abstract

An optical lens system with a wide field of view includes, in order from the object side to the image side: a stop, a first lens element with a positive refractive power, a second lens element with a negative refractive power, a third lens element with a positive refractive power, and a fourth lens element with a negative refractive power. The focal length of the first lens element is f1, the focal length of the second lens element and the third lens element combined is f23, and they satisfy the relation: 0.4

IPC Classes  ?

• G02B 13/18 - Optical objectives specially designed for the purposes specified below with lenses having one or more non-spherical faces, e.g. for reducing geometrical aberration
• G02B 9/34 - Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or – having four components only
• G02B 13/00 - Optical objectives specially designed for the purposes specified below
• G02B 27/00 - Optical systems or apparatus not provided for by any of the groups ,
• G02B 5/20 - Filters

Abstract

An optical lens system with a wide field of view includes, in order from the object side to the image side: a stop, a first lens element with a positive refractive power, a second lens element with a negative refractive power, and a third lens element with a positive refractive power. A focal length of the first lens element and the second lens element combined is f12, a focal length of the third lens element is f3, and they satisfy the relation: 0.3

IPC Classes  ?

• G02B 3/02 - Simple or compound lenses with non-spherical faces
• G02B 13/00 - Optical objectives specially designed for the purposes specified below
• G02B 9/16 - Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or – having three components only arranged + – + all the components being simple
• G02B 27/00 - Optical systems or apparatus not provided for by any of the groups ,
• G02B 5/20 - Filters

Abstract

An optical imaging lens includes, in order from an object side to an image side: a stop, a first lens element with a positive refractive power, a second lens element with a negative refractive power, a third lens element with a refractive power, a fourth lens element with a positive refractive power, and a fifth lens element with a negative refractive power. A focal length of the second lens element, the third lens element and the fourth lens element combined is f234, a focal length of the fifth lens element is f5, and they satisfy the relation: −1.8

IPC Classes  ?

• G02B 9/60 - Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or – having five components only
• G02B 13/00 - Optical objectives specially designed for the purposes specified below

Abstract

A lens having microstructures has a first face and a second face. The first face has an optical portion at a central portion thereof. An optical mechanism portion is defined around the optical portion. The optical mechanism portion is formed with at least one recessed microstructure whose bottom has a matte surface.

IPC Classes  ?

• G02B 3/08 - Simple or compound lenses with non-spherical faces with discontinuous faces, e.g. Fresnel lens
• G02B 13/00 - Optical objectives specially designed for the purposes specified below
• G02B 27/00 - Optical systems or apparatus not provided for by any of the groups ,
• G02B 3/00 - Simple or compound lenses

Abstract

A six-piece optical lens system includes, in order from the object side to the image side: a stop, a first lens element with a positive refractive power has a convex object-side surface; a second lens element with a negative refractive power has a convex object-side surface; a third lens element with a positive refractive power has a concave image-side surface; a fourth lens element with a negative refractive power has a concave image-side surface; a fifth lens element with a positive refractive power has a convex object-side surface; a sixth lens element with a negative refractive power has a concave object-side surface, and at least one of object-side and image-side surfaces of each lens element is aspheric. Thereby, such a system can be applied to a high resolution mobile phone.

IPC Classes  ?

• G02B 3/02 - Simple or compound lenses with non-spherical faces
• G02B 21/02 - Objectives
• G02B 13/04 - Reversed telephoto objectives
• G02B 9/62 - Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or – having six components only
• G02B 13/00 - Optical objectives specially designed for the purposes specified below

Abstract

A light blocking plate is adapted for being installed on a lens wherein the lens has an optical portion and a positioning portion surrounding the optical portion. The light blocking plate includes an annular body which is formed with a through hole at a central portion thereof. The annular body has a first face and a second face. The annular body has an inner rim and an outer rim. The through hole is defined by the inner rim. One of the first face and the second face is adapted for being disposed on the positioning portion of the lens. The inner rim is formed with a plurality of notches so that the inner rim has a contour which is not smooth circular. Thus, halo disturbance can be reduced.

IPC Classes  ?

• G02B 9/00 - Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or –
• G02B 27/00 - Optical systems or apparatus not provided for by any of the groups ,
• G02B 7/02 - Mountings, adjusting means, or light-tight connections, for optical elements for lenses

Abstract

An optical lens system with a wide field of view includes, in order from the object side to the image side: a stop; a first lens element with a positive refractive power having a convex image-side surface and at least one aspheric surface; a second lens element with a negative refractive power having a concave image-side surface and at least one aspheric surface; a third lens element with a positive refractive power having a concave object-side surface and at least one aspheric surface; and a fourth lens element with a negative refractive power having a convex object-side surface and at least one aspheric surface, at least one of the object-side and the image-side surfaces of the fourth lens element is formed with an inflection point.

IPC Classes  ?

• G02B 3/02 - Simple or compound lenses with non-spherical faces
• G02B 13/18 - Optical objectives specially designed for the purposes specified below with lenses having one or more non-spherical faces, e.g. for reducing geometrical aberration
• G02B 13/00 - Optical objectives specially designed for the purposes specified below
• G02B 9/34 - Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or – having four components only

Abstract

A five-piece optical lens system includes, in order from the object side to the image side: a stop, a first lens element with a positive refractive power has a convex image-side surface and at least one aspheric surface; a second lens element with a negative refractive power has a convex object-side surface and at least one aspheric surface; a third lens element has a concave image-side surface and at least one aspheric surface; a fourth lens element with a positive refractive power has a convex object-side surface and at least one aspheric surface, and a fifth lens element with a negative refractive power has a concave object-side surface and at least one aspheric surface. Thereby, such a system can be applied to a high resolution mobile phone.

IPC Classes  ?

• G02B 3/02 - Simple or compound lenses with non-spherical faces
• G02B 13/00 - Optical objectives specially designed for the purposes specified below
• G02B 9/60 - Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or – having five components only

Abstract

A six-piece optical lens system includes, in order from the object side to the image side: a first lens element with a negative refractive power has a concave image-side surface, a second lens element with a positive refractive power has a convex image-side surface, a third lens element with a positive refractive power has a convex object-side surface, a fourth lens element with a negative refractive power has a concave image-side surface, a fifth lens element with a positive refractive power has a convex object-side surface, and a sixth lens element with a negative refractive power has a concave image-side surface. Each of the first, second, fourth and sixth lens elements has at least one aspheric surface, and one of the third and fifth lens elements is made of glass. Thereby, such a system can be applied to a high resolution mobile phone.

IPC Classes  ?

• G02B 9/62 - Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or – having six components only
• G02B 13/18 - Optical objectives specially designed for the purposes specified below with lenses having one or more non-spherical faces, e.g. for reducing geometrical aberration
• G02B 3/02 - Simple or compound lenses with non-spherical faces
• G02B 13/00 - Optical objectives specially designed for the purposes specified below

Abstract

A five-piece optical lens system comprises, in order from the object side to the image side: a first lens element with a negative refractive power having a convex object-side surface; a second lens element with a negative refractive power having a concave image-side surface; a third lens element with a positive refractive power having a convex object-side surface; a stop; a fourth lens element with a positive refractive power having a convex image-side surface; a fifth lens element with a negative refractive power having a concave object-side surface, each of the second, third, fourth and fifth lens elements has at least one aspheric surface. Thereby, such a system has a wide field of view and can improve the yield rate when being applied to biomedicine, car recorder, camera or other electronic products.

IPC Classes  ?

• G02B 13/04 - Reversed telephoto objectives
• G02B 13/00 - Optical objectives specially designed for the purposes specified below

Abstract

A six-piece optical lens system comprises, in order from the object side to the image side: a first lens element with a positive refractive power having a convex object-side surface; a second lens element with a negative refractive power having a concave image-side surface; a third lens element with a negative refractive power; a fourth lens element with a positive refractive power having a concave object-side surface; a fifth lens element with a positive refractive power having a convex image-side surface; a sixth lens element with a negative refractive power having a concave image-side surface, each of the first, second, third, fourth, fifth and sixth lens elements has at least one aspheric surface. Thereby, such a system not only can be applied to a high resolution mobile phone, but also has a wide field of view, big stop, high pixel, high resolution and low height.

IPC Classes  ?

• G02B 13/18 - Optical objectives specially designed for the purposes specified below with lenses having one or more non-spherical faces, e.g. for reducing geometrical aberration
• G02B 9/62 - Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or – having six components only
• G02B 13/00 - Optical objectives specially designed for the purposes specified below

Abstract

A six-piece optical lens system includes, in order from the object side to the image side: a stop; a first lens element with a positive refractive power having a convex object-side surface; a second lens element with a negative refractive power having a concave image-side surface; a third lens element with a negative refractive power having a convex object-side surface; a fourth lens element with a positive refractive power having a convex image-side surface; a fifth lens element with a negative refractive power having a concave image-side surface; a sixth lens element with a negative refractive power having a concave object-side surface, each of the first, second, third, fourth, fifth and sixth lens elements has at least one aspheric surface. Thereby, such a system can be applied to a high resolution mobile phone, and has a wide field of view, big stop, high pixel, high resolution and low height.

IPC Classes  ?

• G02B 13/18 - Optical objectives specially designed for the purposes specified below with lenses having one or more non-spherical faces, e.g. for reducing geometrical aberration
• G02B 9/62 - Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or – having six components only
• G02B 13/00 - Optical objectives specially designed for the purposes specified below

Abstract

A five-piece optical lens system includes, in order from the object side to the image side: a first lens element with a positive refractive power having a convex object-side surface and at least one aspheric surface; a second lens element with a negative refractive power having a concave image-side surface and at least one aspheric surface; a third lens element with a positive refractive power having at least one aspheric surface; a fourth lens element with a positive refractive power having a concave object-side surface and a convex image-side surface, and at least one aspheric surface; a fifth lens element with a negative refractive power having a concave image-side surface and at least one aspheric surface. Thereby, such a system not only can be applied to a high resolution mobile phone, but also has a wide field of view, big stop, high pixel, high resolution and low height.

IPC Classes  ?

• G02B 9/60 - Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or – having five components only

Abstract

A six-piece optical lens system comprises, in order from the object side to the image side: a stop, a first lens element with a positive refractive power having a convex object-side surface and at least one aspheric surface; a second lens element with a negative refractive power having a concave image-side surface and at least one aspheric surface; a third lens element with a positive refractive power having a convex image-side surface and at least one aspheric surface; a fourth lens element with a positive refractive power having a concave object-side surface and at least one aspheric surface; a fifth lens element having a convex image-side surface and at least one aspheric surface; a sixth lens element with a negative refractive power having a concave image-side surface and at least one aspheric surface. Thereby, the total track length of the system will not be too long.

IPC Classes  ?

• G02B 13/18 - Optical objectives specially designed for the purposes specified below with lenses having one or more non-spherical faces, e.g. for reducing geometrical aberration
• G02B 9/62 - Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or – having six components only

Abstract

A five-piece optical lens system is provided with, in order from the object side to the image side: a stop, a first lens element with a positive refractive power having a convex image-side surface, one of the object-side surface and an image-side surface being aspheric; a second lens element with a negative refractive power having a concave image-side surface, one of the object-side surface and an image-side surface being aspheric; a third lens element with a positive refractive power having a convex image-side surface, one of an object-side surface and the image-side surface being aspheric; a fourth lens element having a concave object-side surface, one of the object-side surface and an image-side surface being aspheric; a fifth lens element with a negative refractive power having a convex image-side surface, one of an object-side surface and the image-side surface being aspheric.

IPC Classes  ?

• G02B 9/60 - Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or – having five components only
• G02B 13/18 - Optical objectives specially designed for the purposes specified below with lenses having one or more non-spherical faces, e.g. for reducing geometrical aberration
• G02B 3/02 - Simple or compound lenses with non-spherical faces

Abstract

A three-piece optical lens system comprises, in order from the object side to the image side: a first lens element with a positive refractive power having a convex object-side surface, one of the object-side surface and an image-side surface being aspheric; a stop, a second lens element with a positive refractive power having a concave object-side surface, one of the object-side surface and an image-side surface being aspheric; a third lens element with a negative refractive power having a concave image-side surface, one of an object-side surface and the image-side surface being aspheric. A refractive index of the third lens element is N3, an Abbe number of the third lens element is V3, and they satisfy the relations: N3>1.57; V3<40. Such arrangements can reduce the volume of the three-piece optical lens system and improve the image quality of the periphery of the image.

IPC Classes  ?

• G02B 9/12 - Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or – having three components only

Abstract

The wide-angle imaging lens module includes four lenses arranged from an object side to an image side in a sequence of: the first lens, having a positive refractive power, a convex surface on the object side and at least one aspheric surface; a diaphragm; the second lens, having a positive refractive power, a concave surface on the object side and at least one aspheric surface; the third lens, having a positive refractive power, a concave surface on the object side and at least one aspheric surface; the fourth lens, having a negative refractive power, a convex surface on the object side and at least one aspheric surface. The first and the second lenses perform a symmetry concave, providing the wider field of view angle and the larger aperture. A structural design that allows lenses to restrain better aberrations performances of aspheric surfaces further provides high-definition and high imaging qualities.

IPC Classes  ?

• G02B 9/34 - Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or – having four components only
• G02B 3/02 - Simple or compound lenses with non-spherical faces
• G02B 13/18 - Optical objectives specially designed for the purposes specified below with lenses having one or more non-spherical faces, e.g. for reducing geometrical aberration

Abstract

An optical lens system comprises, in order from the object side to the image side: a first lens element with a positive refractive power having a convex object-side surface, one of the object-side surface and an image-side surface being aspheric; a stop; a second lens element with a negative refractive power having a concave object-side surface, one of the object-side surface and an image-side surface being aspheric; a third lens element with a positive refractive power having a concave image-side surface, one of an object-side surface and the image-side surface being aspheric. Focal lengths of the first, second and third lens elements are f1, f2, f3, respectively, they satisfy the relations: 0.4<|f1|/|f2|<1.0; 0.5<|f2|/|f3|<1.3. If |f1|/|f2| and |f2|/|f3| satisfy the above relations, it can provide a wide field of view and improve the resolution. Contrarily, the performance and resolution of the optical lens system will be reduced.

IPC Classes  ?

• G02B 3/02 - Simple or compound lenses with non-spherical faces
• G02B 13/18 - Optical objectives specially designed for the purposes specified below with lenses having one or more non-spherical faces, e.g. for reducing geometrical aberration

Abstract

The present invention provides a five-piece imaging lens module including a fixed diaphragm and an optical module. The optical module includes five lenses arranged from an object side to an image side in a sequence of: the first lens, having a positive refractive power, a concave surface, and having at least one aspheric surface; the diaphragm; the second lens, having a negative refractive power, a concave surface, and having at least one aspheric surface; the third lens, having a positive refractive power, a convex surface, and having at least one aspheric surface; the fourth lens, having a concave surface, and having at least one aspheric surface; the fifth lens, having a convex on the object side near to the optic axis, and having at least one aspheric surface. With the fifth lens, the present invention provides a better resolving power.

IPC Classes  ?

• G02B 13/18 - Optical objectives specially designed for the purposes specified below with lenses having one or more non-spherical faces, e.g. for reducing geometrical aberration
• G02B 9/60 - Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or – having five components only

Abstract

The present invention provides an exhausting structure for lens. The exhausting structure is used for being disposed and fixed between a lens and an optical apparatus. The exhausting structure is formed with an air channel. The air channel has a first opening and a second opening. A projecting outline of the first opening in a projecting direction is separated from a projecting outline of the second opening in the projecting direction. Thereby, the air channel allows air to flow therethrough. Further, an air pressure caused by the change of the temperature in the exhausting structure can be released so as to prevent the air from pressing the lens or apparatus. The exhausting structure can also prevent a light from entering into the base through the air channel.

IPC Classes  ?

• G02B 7/02 - Mountings, adjusting means, or light-tight connections, for optical elements for lenses

Abstract

A single focus wide-angle lens module includes a fixed aperture diaphragm, a first, a second, a third and a forth lens arranged from an object side to an image side in the following sequence: the first lens, the fixed aperture diaphragm, the second lens, the third lens and the forth lens. The first lens has a negative refractive power, a concave surface toward the image side, and at least one aspheric surface. The second lens has a positive refractive power and a concave surface toward the object side, and said second lens is made of glass. Further, the third lens has a meniscus shape, a positive refractive power, a concave surface toward the object side, and at least one aspheric surface. The fourth lens has a positive refractive power, a convex surface toward the object side, and at least one aspheric surface.

IPC Classes  ?

• G02B 9/34 - Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or – having four components only
• G02B 13/18 - Optical objectives specially designed for the purposes specified below with lenses having one or more non-spherical faces, e.g. for reducing geometrical aberration
• G02B 3/06 - Simple or compound lenses with non-spherical faces with cylindrical or toric faces
• G02B 9/00 - Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or –
• G02B 9/08 - Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or – having two components only two + components arranged about a stop

Abstract

An imaging lens module includes a fixed diaphragm and an optical module. The optical module includes first, second, third, fourth and fifth lenses arranged from an object side to an image side in a sequence of: the first lens, having a negative refractive power, a convex surface disposed towards the object side, and a concave surface disposed towards the image side; the diaphragm; the second lens having a positive refractive power and a convex lens disposed towards the image side; and the third lens; being a meniscus negative lens; the fourth lens, being a positive lens, and adhered with the third lens to form a composite lens; the fifth lens, having a positive refractive power, such that the imaging lens module is a lens module with the features of high imaging quality and high yield rate.

IPC Classes  ?

• G02B 9/60 - Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or – having five components only
• G02B 13/18 - Optical objectives specially designed for the purposes specified below with lenses having one or more non-spherical faces, e.g. for reducing geometrical aberration
• G02B 9/34 - Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or – having four components only