Abstract

Assemblies, systems and methods for balanced suspension of luminaires are provided. In some embodiments a luminaire mounting and suspension assembly is provided comprising a mounting unit and a plurality of suspension units. Each suspension unit comprises a housing coupled to the mounting unit and a yoke pivotally coupled to the housing at a pivot point. The yoke comprises a pair of cable grippers, each cable gripper positioned on opposing sides of the pivot point and configured to grip a suspension cable for suspending a luminaire, wherein an axis of the pivot point is perpendicular to axes of the suspension cables and whereby free rotation of the yoke about the pivot point evenly balances tension between the suspension cables. In some embodiments a luminaire system is provided comprising a mounting and suspension assembly and a luminaire suspended by the assembly. In some embodiments a method of suspending a luminaire is provided comprising providing and suspending a luminaire system and employing the system to evenly balance tension between pairs of suspension cables.

IPC Classes  ?

• F21V 21/008 - Suspending from a cable or suspension line
• F21S 8/06 - Lighting devices intended for fixed installation intended only for mounting on a ceiling or like overhead structure by suspension
• F21V 21/02 - Wall, ceiling, or floor basesFixing pendants or arms to the bases
• F21V 21/30 - Pivoted housings or frames

Abstract

A system and method are provided for levelling suspended luminaires. The system includes a shuttle and a thumb wheel disposed in a housing. The shuttle includes a gripper for securing the cable wires that attach to the luminaire. A rotational movement of the thumb wheel is translated to linear movement of the shuttle within a slot of the housing to allow adjustment of an attachment point of the cable wire relative to the rest of the luminaire to enable tool-free levelling of the luminaire.

IPC Classes  ?

• F21V 21/008 - Suspending from a cable or suspension line
• F21S 8/06 - Lighting devices intended for fixed installation intended only for mounting on a ceiling or like overhead structure by suspension
• F21V 21/14 - Adjustable mountings

Abstract

A light guide for luminaires is disclosed. In some embodiments the light guide is oriented to receive light from a point light source at a light receiving surface configured to refract incoming light at angles to enable total internal reflection (TIR) of the light down the body of the light guide without loss of light. A foot at the bottom of the body of the light guide includes a first sloped face wherefrom a portion of the light is extracted downward toward a work plane in a batwing distribution and a second sloped face and a return face wherefrom the remaining light is extracted upward.

IPC Classes  ?

• G02B 6/10 - Light guidesStructural details of arrangements comprising light guides and other optical elements, e.g. couplings of the optical waveguide type
• F21V 8/00 - Use of light guides, e.g. fibre optic devices, in lighting devices or systems
• F21K 9/00 - Light sources using semiconductor devices as light-generating elements, e.g. using light-emitting diodes [LED] or lasers

Abstract

A light emitting panel assembly is provided. The light emitting panel assembly includes: a housing; a light guide within the housing, the light guide having a first major surface with a plurality of extraction elements, a second major surface, a lower surface, an upper surface, a light source adjacent to the lower surface of the light guide; and an upper guide reflector having a diffuse reflective surface adjacent to and facing the upper surface of the light guide, whereby light from the light source traveling through the light guide toward the upper guide reflector spreads within the light guide, and whereby the upper guide reflector homogenizes the light before the light is redirected to the light guide. A luminaire comprising such a light emitting panel assembly is also provided.

IPC Classes  ?

• F21V 8/00 - Use of light guides, e.g. fibre optic devices, in lighting devices or systems
• F21V 7/00 - Reflectors for light sources
• G02B 6/10 - Light guidesStructural details of arrangements comprising light guides and other optical elements, e.g. couplings of the optical waveguide type
• F21K 9/00 - Light sources using semiconductor devices as light-generating elements, e.g. using light-emitting diodes [LED] or lasers

Abstract

A light guide for a luminaire for lighting at least an upper hemisphere of the luminaire is provided. The light guide includes: a light source receiving surface; and a first major surface extending in a downstream direction away from the light source receiving surface. The first major surface comprising an indirect extraction element, wherein a cross-section of the indirect extraction element comprising a serpentine contour.

IPC Classes  ?

• F21V 5/00 - Refractors for light sources
• F21V 8/00 - Use of light guides, e.g. fibre optic devices, in lighting devices or systems

Abstract

A light guide includes: a first major surface; a second major surface opposite the first major surface; an array of extraction elements, each element disposed between an upper and lower edge of the first major surface, each upper and lower edge defining a plane therebetween, each element including: a first face adjoining the upper edge, the first face projecting inwardly relative to the plane at a first angle; a second face adjoining the first face, the second face projecting inwardly at a second angle relative to the plane, the second angle greater than the first angle; a third face adjoining the lower edge and the second face, the third face projecting inwardly relative to the plane at a third angle, the third angle greater than the first angle; wherein the first face, second face and third face define an indentation projecting inwardly from the plane defined by the first major surface.

IPC Classes  ?

• G02B 6/10 - Light guidesStructural details of arrangements comprising light guides and other optical elements, e.g. couplings of the optical waveguide type
• F21V 5/00 - Refractors for light sources
• F21V 8/00 - Use of light guides, e.g. fibre optic devices, in lighting devices or systems
• G02B 6/26 - Optical coupling means

Abstract

A light guide is provided. The light guide includes a first major surface comprising an array of Z-shaped extraction elements. Each Z-shaped extraction element includes: a first face; a second face adjoining the first face, wherein the first face and an upper portion of the second face define an indentation projecting inwardly from a plane defined by the first major surface; and a third face adjoining the second face, wherein the third face and a lower portion of the second face define a protrusion projecting outwardly from the plane defined by the first major surface.

IPC Classes  ?

• G02B 6/10 - Light guidesStructural details of arrangements comprising light guides and other optical elements, e.g. couplings of the optical waveguide type
• F21V 5/00 - Refractors for light sources
• F21V 8/00 - Use of light guides, e.g. fibre optic devices, in lighting devices or systems
• G02B 6/26 - Optical coupling means

Abstract

A light emitting panel assembly is provided. The assembly includes: a light source; a transition area including a first major side and a second major side, wherein at least one of the first major side and the second major side includes a plurality of vertically extending flutes, wherein the flutes extend at least a portion of the height of the transition area; and an emission area in optical communication with the transition area, the emission area including light extraction elements.

IPC Classes  ?

• F21S 4/00 - Lighting devices or systems using a string or strip of light sources
• F21S 8/00 - Lighting devices intended for fixed installation
• F21V 7/10 - Construction
• F21V 8/00 - Use of light guides, e.g. fibre optic devices, in lighting devices or systems