The present application is applicable to the field of movies, and provides a non-projection type theater auditorium, comprising a self-luminous movie screen and seating areas facing the self-luminous movie screen. The seating areas comprise: a stall seating area comprising a plurality of rows of seats, the rows of seats gradually rising from front to back to form a step shape; and a balcony seating area located above the stall seating area and directly facing a middle rear portion of the stall seating area in a vertical direction. A light path between the self-luminous movie screen and the stall seating area is a stall light path, and a light path between the uppermost pixel of the self-luminous movie screen and the audience on the last row of seats in the stall seating area forms an upper boundary of the stall light path; and the balcony seating area comprises at least one row of seats, and all the seats in the balcony seating area are located on the outer side of the upper boundary of the stall light path. Compared with a traditional theater auditorium having the same audience capacity as the present invention, such a theater auditorium structure has several rear rows of seats moved forwards and upwards, so that the theater auditorium structure is more compact, and the movie watching effect is not affected.
The present application is suitable for the technical field of LED display. Provided is an LED light source type conversion structure, which is used for converting an LED pixel from a point light source into a surface light source. The LED light source type conversion structure comprises: a solid light guide assembly, comprising a solid light guide body used for covering an LED pixel, the solid light guide body being used for expanding a light beam emitted by the LED pixel; a scattering assembly, used for scattering the light beam expanded via the solid light guide body; and an external-light suppression assembly, used for absorbing incident external ambient light rays so as to reduce the reflectivity of the LED light source type conversion structure to the external ambient light rays. When external ambient light rays enter, from the outside, the surface of the LED light source type conversion structure provided by the present application, most of the external ambient light rays are absorbed by the external-light suppression assembly, such that the problem of excessively high surface reflectivity of LED display screens may be relieved, thereby effectively improving the intra-frame contrast ratio of LED images.
G09F 9/33 - Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements being semiconductor devices, e.g. diodes
3.
ANTI-TAMPER CIRCUIT, LED CABINET AND LED DISPLAY SCREEN
The present application provides an anti-tamper circuit, an LED cabinet and an LED display screen, wherein the anti-tamper circuit is applied to an LED display system that includes an LED display screen and a digital cinema playback server connected to the LED display screen. The LED display screen includes a plurality of LED modules. The anti-tamper circuit includes a first signal transmission unit, a second signal transmission unit, a first field-effect transistor, a second field-effect transistor, a charging and discharging unit and a connection port for connecting the digital cinema playback server. In the present application, during power-off, both the anti-tamper circuit and the digital cinema playback server can be ensured to work normally; thus, digital copyrights are not subject to security threats, and the security of information is greatly improved.
G09G 3/32 - Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
4.
LED DISPLAY SCREEN AND DATA DISPLAY CONTROL METHOD THEREFOR, AND SCREEN SYSTEM
Disclosed in the present application are an LED display screen and a data display control method therefor, and a screen system. The display screen includes a plurality of LED boxes, and each of the LED boxes includes a plurality of LED modules capable of emitting triggering signals. The data display control method for display screen includes: acquiring the triggering signals emitted by the LED modules of any LED box; determining whether the triggering signals of the LED modules of any LED box body are tampering signals; and controlling the LED boxes to stop displaying data when all of the triggering signals emitted by the LED modules of any LED box body are tampering signals. By means of the technical solution of the present application, it is possible to detect whether the LED modules work normally, thereby improving the accuracy and security of data display performed by the LED modules.
H05B 47/155 - Coordinated control of two or more light sources
H05B 45/54 - Circuit arrangements for operating light-emitting diodes [LED] responsive to malfunctions or undesirable behaviour of LEDsCircuit arrangements for operating light-emitting diodes [LED] responsive to LED lifeProtective circuits in a series array of LEDs
H05K 5/00 - Casings, cabinets or drawers for electric apparatus
H05K 5/02 - Casings, cabinets or drawers for electric apparatus Details
5.
PICTURE DISPLAY CONTROL METHOD, APPARATUS, AND DEVICE, AND MEDIUM
A picture display control method, apparatus, and device, and a medium. The method comprises the following steps: acquiring a video signal to be displayed (S10); performing frequency multiplication operation on the video signal on the basis of a preset frequency multiplication mode to obtain a frequency-multiplied signal corresponding to the video signal (S20); on the basis of a preset display parameter gamma table, determining a grayscale linear value corresponding to the frequency-multiplied signal (S30); on the basis of the grayscale linear value and the frequency multiplication mode, expanding a sequence unit frame of the video signal to obtain a frequency-multiplied sequence unit frame, so as to perform picture display (S40). The 3D video signal is subjected to frequency multiplication so as to obtain the corresponding grayscale linear value. The grayscale value of the display screen is improved by utilizing the frequency multiplication technology. Displaying is driven according to the frequency-multiplied grayscale linear value, thus optimizing the display performance of the display device, and enhancing the picture display quality of the display device.
G09G 3/20 - Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix
Provided are a 3D LED display screen (41) and a 3D image system. The 3D LED display screen (41) is used in conjunction with a pair of active 3D glasses (42). The 3D LED display screen (41) is provided with a polarizing layer (412), wherein the polarizing layer (412) can uniformly polarize light emitted by all pixel points (11). Half of the optical efficiency is approximately absorbed during a polarizing process, which is equivalent to the screen brightness of the display screen that is used for displaying a 2D image being halved relative to the light emission brightness of the pixel points (11), and a cardinal number for the calculation of the optical efficiency used for displaying a 3D image is also halved, such that when the optical efficiency of the 3D active glasses (42) itself is not changed, the accumulated optical efficiency of the whole process from the light emission of the 3D LED display screen (41) to the light reception of the 3D active glasses (42) is doubled. Although the screen brightness used for displaying a 2D image is halved, same can be compensated for by improving the original light emission brightness of LED pixel points (11), such that the balance of brightness design parameters in 2D and 3D display modes is taken into consideration, and the optical efficiency of active 3D LED display is also improved.
G02F 1/133 - Constructional arrangementsOperation of liquid crystal cellsCircuit arrangements
G09F 9/33 - Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements being semiconductor devices, e.g. diodes
G02B 30/25 - Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer’s left and right eyes of the stereoscopic type using polarisation techniques
A mask (3), an LED module and a display screen, wherein the mask (3) is integrally in a grid structure and includes a plurality of grid units (31), each grid unit (31) is enclosed by a retaining wall (311), one end of the retaining wall (311) extends outwards the direction close to the center of the grid unit (31) and is provided with a support edge (312), and the outer side of the support edge (312) is provided with a support plane.
G02B 30/25 - Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer’s left and right eyes of the stereoscopic type using polarisation techniques
H01L 25/16 - Assemblies consisting of a plurality of individual semiconductor or other solid-state devices the devices being of types provided for in two or more different subclasses of , , , , or , e.g. forming hybrid circuits
8.
LED DISPLAY PIXEL STRUCTURE, LED DISPLAY MODULE, AND LED DISPLAY SCREEN
Provided are an LED display pixel structure, an LED display module, and an LED display screen. The LED display pixel structure includes an LED pixel unit (1) and a layered extraction structure arranged above the LED pixel unit (1). The layered extraction structure is configured to receive light from the LED pixel unit (1) and emit the light. The LED display pixel structure includes a first retardation film layer (31), a linear polarizer (32), and a second retardation film layer (33), which are sequentially stacked. The light emitted by the LED pixel unit (1) sequentially passes through the first retardation film layer (31), the linear polarizer (32), and the second retardation film layer (33). The first retardation film layer (31) and the second retardation film layer (33) are quarter-wave plates.
H01L 25/13 - Assemblies consisting of a plurality of individual semiconductor or other solid-state devices all the devices being of a type provided for in a single subclass of subclasses , , , , or , e.g. assemblies of rectifier diodes the devices having separate containers the devices being of a type provided for in group
H01L 25/075 - Assemblies consisting of a plurality of individual semiconductor or other solid-state devices all the devices being of a type provided for in a single subclass of subclasses , , , , or , e.g. assemblies of rectifier diodes the devices not having separate containers the devices being of a type provided for in group
A spliced LED box body includes at least four LED boxes arranged in rows and columns and spliced with each other, wherein connecting components are provided on opposite adjacent splicing surfaces of the LED box. The connecting components include a first connecting component, a second connecting component, a third connecting component and a fourth connecting component. The first connecting component and third connecting component are arranged on two adjacent side surfaces of the LED box, the second connecting component is arranged on a side surface of the LED box opposite to the first connecting component, and the fourth connecting component is arranged on a side surface of the LED box opposite to the third connecting component. When two adjacent LED boxes are spliced, the first connecting component and the second connecting component are matched and connected, and the third connecting component and the fourth connecting component are matched and connected.
G09F 9/33 - Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements being semiconductor devices, e.g. diodes
F16M 11/04 - Means for attachment of apparatusMeans allowing adjustment of the apparatus relatively to the stand
F16M 13/02 - Other supports for positioning apparatus or articlesMeans for steadying hand-held apparatus or articles for supporting on, or attaching to, an object, e.g. tree, gate, window-frame, cycle
G09F 9/302 - Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements characterised by the form or geometrical disposition of the individual elements
H02B 1/46 - BoxesParts thereof or accessories therefor
H01R 9/00 - Structural associations of a plurality of mutually-insulated electrical connecting elements, e.g. terminal strips or terminal blocksTerminals or binding posts mounted upon a base or in a caseBases therefor
Provided is an anti-tamper protection circuit including a switch trigger port, a tamper signal transmission port, a power supply unit, and a signal output port. The switch trigger port is connected to a switch, the signal output port is connected to a digital movie server, and the tamper signal transmission port is configured to transmit a tamper signal transmitted to the signal output port through the tamper signal transmission port. In the present disclosure, when an LED display screen is powered off, a battery inside the digital cinema server would continue to power the digital cinema server to maintain proper functioning of the digital cinema server, the power supply unit also powers the anti-tamper protection circuit to guarantee anti-tamper operation of the anti-tamper protection circuit, thereby enabling continuous protection of information security and maintenance of digital copyright, and such that the requirements of information handling standards are satisfied.
G09G 3/32 - Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
A screen vibrator, which is configured to be attached to the back of a screen. The overall natural frequency of the screen vibrator (11, 12) is f0, f0 ranging from 5 Hz to 200 Hz. The screen vibrator (11, 12) comprises an excitation coil (5), a magnet (4), and a spring (2), wherein the excitation coil (5) can generate an electromagnetic force when being driven; the magnet (4) is fixedly connected to the spring (2), and the magnet (4) can drive the spring (2) to resonate together when the magnet (4) vibrates under the effect of the electromagnetic force; and the spring (2) transmits a vibration wave to the screen. The screen vibrator (11, 12) has the advantages of a simple structure, low costs, a high vibration intensity, no obvious noise, a long service life, etc.
H02K 33/02 - Motors with reciprocating, oscillating or vibrating magnet, armature or coil system with armatures moved one way by energisation of a single coil system and returned by mechanical force, e.g. by springs
H02K 33/18 - Motors with reciprocating, oscillating or vibrating magnet, armature or coil system with coil systems moving upon intermittent or reversed energisation thereof by interaction with a fixed field system, e.g. permanent magnets
12.
LED DISPLAY SCREEN AND DATA DISPLAY CONTROL METHOD THEREFOR, AND SCREEN SYSTEM
Disclosed in the present application are an LED display screen and a data display control method therefor, and a screen system. The display screen comprises a plurality of LED box bodies, wherein each LED box body comprises a plurality of LED modules capable of emitting trigger signals. The data display control method for a display screen comprises: acquiring trigger signals emitted by LED modules in any LED box body; determining whether the trigger signals from the LED modules in any LED box body are tampering signals; and when the trigger signals emitted by the LED modules in any LED box body are all tampering signals, controlling the LED box bodies to stop displaying data. By means of the technical solution of the present application, it is possible to detect whether each LED module works normally, thereby improving the accuracy and security of data display performed by the LED module.
G09G 3/32 - Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
G09G 3/00 - Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
13.
ANTI-TAMPER CIRCUIT, LED CABINET, AND LED DISPLAY SCREEN
The present application provides an anti-tamper circuit, an LED cabinet, and an LED display screen. The anti-tamper circuit is applied to an LED display system, the LED display system comprises an LED display screen and a digital movie playback server connected to the LED display screen, and the LED display screen comprises a plurality of LED modules. The anti-tamper circuit comprises a first signal transmission unit, a second signal transmission unit, a first field effect transistor, a second field effect transistor, a charging/discharging unit, and a connection port used for connection to the digital movie playback server. In the present application, during power-off, both the anti-tamper circuit and the digital movie playback server can be ensured to work normally; thus, digital rights are not subject to security threats, and the security of information is greatly improved.
G09G 3/32 - Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
G09G 3/00 - Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
H02H 7/20 - Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for electronic equipment
G06F 21/10 - Protecting distributed programs or content, e.g. vending or licensing of copyrighted material
A mask (3), an LED module and a display screen, wherein the mask (3) is integrally in a grid structure and comprises a plurality of grid units (31), each grid unit (31) is enclosed by a retaining wall (311), one end of the retaining wall (311) extends towards the direction close to the center of the grid units (31) and is provided with a support edge (312), and the outer side of the support edge (312) is provided with a flat support plane.
G02B 30/25 - Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer’s left and right eyes of the stereoscopic type using polarisation techniques
Embodiments of the present disclosure are applicable to the field of film and television equipment. Provided is a tiled projection screen, comprising at least two screen plates that are arranged in sequence and tiled with each other. Side walls of two adjacent screen plates are spaced apart to form a seam. Each screen plate comprises a reflecting surface for reflecting a projection light ray, and a back surface opposite to the reflecting surface. The tiled projection screen further comprises tiling layers provided at the seams. The tiling layers cover the seams. The tiling layers are bonded to the back surfaces by means of an adhesive. A plurality of first sound-transmitting holes are formed on the screen plates in the area overlapping with the tiling layers. A plurality of second sound-transmitting holes are formed on each screen plate in the area not overlapping with the tiling layers. The present invention solves the problem that existing projection screens have a significant difference between the reflectivity of a tiling area and the reflectivity of a non-tiling area.
A rendering screen (10) and a film and television display system using the rendering screen (10). The film and television display system is applied to a cinema, which comprises a front wall (100) and side walls (200) which are adjacent to the front wall (100). The film and television display system comprises a main screen (20) and the rendering screen (10). The main screen (20) is arranged on the front wall (100). The rendering screen (10) comprises a substrate (1), a light emitting diode (LED) light emitting unit and a light blocking structure (4), wherein the LED light-emitting unit is arranged on the substrate (1), and a light-emitting surface is formed on the side of the LED light-emitting unit away from the substrate (1); and the light blocking structure (4) is arranged on the light-emitting surface and is used for blocking part of light emitted by the LED light-emitting unit to a preset side. The rendering screen (10) is arranged on the side walls (200), and the preset side faces the main screen (20). The light blocking structure (4) can block light emitted to the main screen (20) by the LED light-emitting unit, and prevent illumination for rendering from affecting the display effect of the main screen (20).
G09F 9/33 - Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements being semiconductor devices, e.g. diodes
17.
INSTALLATION LINERS AND SCREEN USING THE INSTALLATION LINERS
A screen (20) using installation liners comprises a curtain material and at least two installation liners. Each installation liner comprises a strip-shaped liner body (1). The liner body (1) comprises a first width side (101), a second width side (102) away from the first width side (101), and a first length side (103) and a second length side (104) connected between the first width side (101) and the second width side (102) and arranged opposite to each other. Engagement recesses (11) are formed at the first width side (101), and the second width side (102) is provided with engagement protrusions (12) protruding therefrom and corresponding one-to-one with the engagement recesses (11). Each engagement protrusion (12) matches the shape of the corresponding engagement recess (11). Surfaces of the installation liners are adhered to regions close to an edge of the curtain material. The engagement protrusions (12) of one installation liner fit the engagement recesses (11) of an adjacent installation liner.
An LED display screen, a display method and apparatus, and a computer-readable storage medium. The LED display screen comprises a display area, and the display area comprises a standard screen display area (1) and an expanded screen display area (2) that is connected to the standard screen display area. The left side of the display area is used for displaying a left-eye image (3), the right side of the display area is used for displaying a right-eye image (4), an overlapping area (6) and a non-overlapping area (5) are formed between the left-eye image (3) and the right-eye image (4), and the width of the left-eye image (3) and the width of the right-eye image (4) are equal to the width of the standard screen display area. The display method comprises: controlling some pixels in an LED display screen to display a left-eye image (3), and controlling the other pixels in the LED display screen to display a right-eye image (4), wherein an overlapping area (6) and a non-overlapping area (5) are formed between the left-eye image (3) and the right-eye image (4), and the width of the left-eye image (3) and the width of the right-eye image (4) are equal to the width of a standard screen display area.
An LED screen pixel structure, an LED display module, and an LED display screen. The LED screen pixel structure comprises an LED pixel unit (1) and a layered light-emitting structure arranged above the LED pixel unit (1). The layered light-emitting structure is used to receive light from the LED pixel unit (1) and emit the light. The LED screen pixel structure comprises, a first retardation film layer (31), a linear polarizer (32), and a second retardation film layer (33), which are sequentially arranged in a stacked manner. Light rays emitted from the LED pixel unit (1) sequentially passes through the first retardation film layer (31), the linear polarizer (32), and the second retardation film layer (33). The first retardation film layer (31) and the second retardation film layer (33) are quarter-wave plates.
G09F 9/33 - Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements being semiconductor devices, e.g. diodes
G02B 30/25 - Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer’s left and right eyes of the stereoscopic type using polarisation techniques
A display apparatus, comprising: a box (1), a display module (2) and a locking mechanism (3); one side of the display module (2) is provided with a positioning structure (21); the display module (2) is provided on one side of the box (1), and the positioning structure (21) faces the box (1); the locking mechanism (3) comprises a controller (31), a driving component (32) and a locking member (33); the driving component (32) is fixed in the box (1); the locking member (33) is connected to the driving component (32) and matches the positioning structure (21); the controller (31) is signally connected to the driving component (32); and the controller (31) is used for controlling the driving assembly (32) to drive the locking member (33) to move, so that the locking member (33) and the positioning structure (21) are locked or unlocked. The driving component (32) can be controlled by the controller (31) to drive the locking member (33) to move, thus the locking member (33) and the positioning structure (21) on the display module (2) are locked or unlocked, so that the display module (2) and the box (1) are fixed or detachable. In the described display apparatus, the connection can be locked between the inner side of the display module (2) and the box (1) so as to prevent the display module (2) from being disassembled from the outside, which is safer and more reliable.
G09F 9/00 - Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
21.
PROJECTION SCREEN CAPABLE OF MAINTAINING POLARIZATION STATE OF PROJECTION LIGHT
Disclosed is a projection screen capable of maintaining the polarization state of projection light. The projection screen comprises a plurality of projection screen units, each projection screen unit comprises at least two layers of optical layered structures, and the phase change of each optical layered structure can be compensated by the other layers. The material of each layer of optical layered structure is set as an optical medium film and/or a metal film. According to the present invention, by providing at least two layers of optical layered structures and by performing material selection and thickness design on a medium forming each layer of optical layered structure, a phase compensation effect can be achieved, and change of the phase and amplitude generated by one layer of the optical layered structure can be compensated by the other layers of optical layered structures, so that the polarization state of exit light can be maintained consistent with the polarization state of incident light, the polarization maintaining rate can reach 200:1 to 2000:1 or above, and a typical polarization maintaining rate is 1000:1; thus, the ghosting of a 3D movie can be greatly eliminated, dizziness is reduced, and the 3D movie watching experience is improved.
An LED box body for anti-piracy. The LED box body comprises an LED module (1), a middle frame (2), a rear cover (3), a video signal interface, a video receiving PCB, a first locking member (4), a second locking member (5), and a sensor (6). A closing state of the box body can be ensured by means of a locking structure formed by the first locking member (4) and the second locking member (5). The sensor (6) is connected to a video source; when the sensor (6) senses that the first locking member (4) and the second locking member (5) are locked, the sensor (6) generates an access signal, the video source transmits a video signal to the LED box body, and when the sensor (6) does not sense that the first locking member (4) and the second locking member (5) are locked, the sensor (6) generates an open circuit signal, and the video source stops transmitting the video signal. Therefore, film and television resources can be prevented from leaking from the LED box body, and the security of the film and television resources is guaranteed.
G09F 9/33 - Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements being semiconductor devices, e.g. diodes
The present invention provides an anti-tamper protection circuit, comprising a switch trigger port, a tamper signal transmission port, a power supply unit, and a signal output port. The switch trigger port is connected to a switch; the signal output port is connected to a digital cinema server; the tamper signal transmission port is used for transmitting a tamper signal; and the tamper signal is transmitted to the signal output port by means of the tamper signal transmission port. According to the present invention, when an LED display screen is powered off, a battery in the digital cinema server would continue to supply power for the digital cinema server so as to maintain the normal working of the digital cinema server, and the power supply unit would also supply power for the anti-tamper protection circuit to ensure the anti-tamper working of the anti-tamper protection circuit, thereby being capable of continuously protecting information security and maintaining a digital copyright, and being capable of reaching the requirement of an information processing standard.
H02H 7/20 - Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for electronic equipment
H02H 1/06 - Arrangements for supplying operative power
G06F 21/10 - Protecting distributed programs or content, e.g. vending or licensing of copyrighted material
G06F 21/64 - Protecting data integrity, e.g. using checksums, certificates or signatures
A spliced LED box body (100), comprising at least four LED boxes distributed in rows and columns and spliced with each other, wherein connecting members are provided on opposite adjacent splicing surfaces of the LED boxes; the connecting members comprise a first connecting member, a second connecting member, a third connecting member and a fourth connecting member; the first connecting member and the third connecting member are disposed on two adjacent side surfaces of the LED boxes, the second connecting member is disposed on the side surface of the LED box opposite to the first connecting member, and the fourth connecting member is disposed on the side surface of the LED box opposite to the third connecting member; and when two adjacent LED box bodies are spliced, the first connecting member and the second connecting member are matched and connected, and the third connecting member and the fourth connecting member are matched and connected. The spliced LED box body may solve the problem in which the splicing accuracy of existing LED box bodies is difficult to guarantee during splicing.
G09F 9/302 - Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements characterised by the form or geometrical disposition of the individual elements
G09F 9/33 - Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements being semiconductor devices, e.g. diodes
F16M 11/04 - Means for attachment of apparatusMeans allowing adjustment of the apparatus relatively to the stand
25.
QUICK-RESPONSE LIQUID CRYSTAL PHASE MODULATION DEVICE AND DRIVING METHOD THEREFOR, AND 3D PROJECTION LIGHT MODULATION SYSTEM
A quick-response liquid crystal phase modulation device and a driving method therefor, and a 3D projection light modulation system. The liquid crystal phase modulation device comprises a first optical self-compensated bending liquid crystal device (2) and a second optical self-compensated bending liquid crystal device (3) which are attached in sequence, and a drive circuit (4) connected to the first optical self-compensated bending liquid crystal device (2) and the second optical self-compensated bending liquid crystal device (3). When a high voltage (VH) is converted into a low voltage (VL), the drive circuit (4) drives the liquid crystal phase modulation device by a reverse voltage opposite to the specified high voltage (VH), and a zero voltage; a discharge speed of materials on two sides of a liquid crystal layer is increased, so that a liquid crystal molecule is relaxed from a field-induced nematic phase state to a bent state in an accelerated mode, thereby shortening an optical response duration of the liquid crystal molecule and increasing an optical response speed. When the liquid crystal modulation device is applied to digital 3D movie projection, image crosstalk can be reduced, and the brightness of a screen can be increased.
G03B 35/16 - Stereoscopic photography by sequential viewing
G02F 1/13 - Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulatingNon-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
26.
Polarization modulator for stereoscopic projection with high light efficiency and polarization beam splitting prism assembly thereof
A polarization modulator for stereoscopic projection comprises a polarization beam splitting prism assembly for splitting an incident beam into a transmitted beam, an upper half of reflected beam, and a lower half of reflected beam, a polarization plane rotating component for rotating the polarization plane of the transmitted beam or of the upper half of reflected beam and the lower half of reflected beam by 90 degrees, a reflective mirror for adjusting a propagation direction of the upper half of reflected beam and the lower half of reflected beam, a lens group for adjusting the range of size of the transmitted beam, a linear polarizer for filtering the beam, a polarization modulator for modulating the transmitted beam, the upper half of reflected beam and the lower half of reflected beam into counter-clockwise circularly polarized light and clockwise circularly polarized light in the order of frames, and a driving circuit.
G03B 35/26 - Stereoscopic photography by simultaneous viewing using polarised or coloured light for separating different viewpoint images
G02B 27/28 - Optical systems or apparatus not provided for by any of the groups , for polarising
G03B 35/22 - Stereoscopic photography by simultaneous viewing using single projector with stereoscopic-base-defining system
G02F 1/01 - Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulatingNon-linear optics for the control of the intensity, phase, polarisation or colour
G02F 1/133 - Constructional arrangementsOperation of liquid crystal cellsCircuit arrangements
G02F 1/139 - Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulatingNon-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells characterised by the electro-optical or magneto-optical effect, e.g. field-induced phase transition, orientation effect, guest-host interaction or dynamic scattering based on orientation effects in which the liquid crystal remains transparent
H04N 13/00 - Stereoscopic video systemsMulti-view video systemsDetails thereof
G02B 30/25 - Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer’s left and right eyes of the stereoscopic type using polarisation techniques
27.
Stereo projection apparatus and stereo projection system with low throw ratio and high light efficiency
A stereo projection apparatus includes a polarized beam splitter assembly for splitting a projecting light beam; a polarization state transforming assembly for adjusting the polarization state of the transmitted light beam or the polarization state of the first and second reflective beam; a light path direction adjustment assembly for adjusting a travel direction of the transmitted light beam or a travel direction of the first and the second reflective light beam; a light beam size adjustment assembly for adjusting a coverage range of the transmitted light beam or a coverage range of the first and the second reflective light beam; and a light modulator for modulating the adjusted transmitted light beam, first reflective light beam and second reflective light beam.
A stereo projection apparatus includes a polarized beam splitter assembly for splitting a projecting light beam into a transmitted light beam, a first reflective light beam and a second reflective light beam; a polarization state transforming assembly for adjusting the polarization state of the transmitted light beam or the polarization state of the first reflective light beam and second reflective beam; a light path direction adjustment assembly for adjusting a travel direction of the transmitted light beam or a travel direction of the first reflective light beam and the second reflective light beam; a light beam size adjustment assembly for adjusting a coverage range of the transmitted light beam or a coverage range of the first reflective light beam and the second reflective light beam; and a light modulator for modulating the adjusted transmitted light beam, first reflective light beam and second reflective light beam to left- circularly polarized light and right-circularly polarized light in accordance with a frame sequence. The stereo projection apparatus can effectively reduce the optical path difference between the reflective light and transmitted light, thereby significantly reducing the size of the entire device and making overlapping of the various light beams easier.
G02B 30/25 - Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer’s left and right eyes of the stereoscopic type using polarisation techniques
29.
STEREOGRAPHIC PROJECTION DEVICE WITH LOW THROW RATIO AND HIGH LIGHT EFFECT AND STEREOGRAPHIC PROJECTION SYSTEM
A stereographic projection device with a low throw ratio and a high light effect, comprising: a polarization and light-splitting assembly (302) which splits projected light beams into a transmitted light beam (201), a first reflected light beam (202) and a second reflected light beam (203); a polarization state conversion assembly (303, 304) which adjusts the polarization state of the transmitted light beam or the polarization states of the first reflected light beam and the second reflected light beam; a light path direction adjustment assembly (305, 306) which adjusts the propagation direction of the transmitted light beam or the propagation directions of the first reflected light beam and the second reflected light beam; a light beam size adjustment assembly (307) which adjusts the ranges of the sizes of the transmitted light beam, the first reflected light beam and the second reflected light beam; and a light modulator (309) which modulates the transmitted light beam, the first reflected light beam and the second reflected light beam which have been adjusted into left-hand circularly polarized light and right-hand circularly polarized light in accordance with a frame sequence. A stereographic projection device with a low throw ratio and a high light effect can effectively reduce an optical path difference between a reflected light beam and a transmitted light beam, so that the volume of the whole device is greatly reduced, and the superposition of various light beams becomes simpler.
A lens structure and dual-purpose glasses with functions of sunglasses and 3D glasses. A lens (12) comprises a quarter wave plate layer (200) and a linear polarizer layer (100). When the linear polarizer layer (100) is located at the outer side of the lens far away from the eye, the optical axis of the linear polarizer layer (100) is vertical. The lens structure can be used for manufacturing dual-purpose glasses with functions of sunglasses and 3D glasses. Either the quarter wave plate layer (200) or the linear polarizer layer (100) can be located at the outer side of the lens far away from the eye. A user can adjust the direction of the lens according to requirements to choose the corresponding function. The dual-purpose glasses are more practical as compared with existing 3D glasses or sunglasses with a single function.
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