System for directional control of light and associated methods

• US 9,429,294 B2
• Filed: 11/11/2013
• Issued: 08/30/2016
• Est. Priority Date: 11/11/2013
• Status: Active Grant

• Current Assignee: Lighting Science Group Corporation (Pegasus Capital Advisors, L.P.)
• Original Assignee: Lighting Science Group Corporation (Pegasus Capital Advisors, L.P.)
• Inventors: Romeu, Ricardo, Boomgaarden, Mark Penley, Kelley, Ryan, Holland, Eric
• Primary Examiner(s): BANNAN, JULIE A
• Application Number:
  US14/076,621
• Publication Number:
  US 20150131281A1
• Time in Patent Office: 1,023 Days
• US Class Current: 1/1
• CPC Class Codes: F21K 9/20 Light sources comprising attachment means
• CPC Class Codes: F21V 5/007 Array of lenses or refractors for a cluster of light sources, e.g. for arrangement of multiple light sources in one plane combination of two or more refractors F21V5/008
• CPC Class Codes: F21V 5/10 comprising photoluminescent material
• CPC Class Codes: F21Y 2107/40 on the sides of polyhedrons, e.g. cubes or pyramids
• CPC Class Codes: F21Y 2115/10 Light-emitting diodes [LED]

Abstract

A lighting device for emitting light in selective directions including a light source structure member, a plurality of lighting devices attached to the light source structure member, a controller, a power supply, and an optic carried by the light source structure member and including a plurality of facets. Each light source of the plurality of light sources may be positioned such that light emitted thereby is emitted through a facet of the plurality of facets of the first optic. Each facet of the plurality of facets may be configured to redirect light in a direction that is unique from the other facets of the plurality of facets. Additionally, the controller may be configured to selectively operate each light source of the plurality of light sources. Multiple pairs, or combinations, of light source structure members and optics may be included.

Claims

1. An optic for emitting light in selective directions comprising:

a receiving section having a receiving surface;

an intermediate section; and

a concave arcuate emitting section comprising a plurality of triangular prism shaped facets;

wherein the triangular prism shaped facets are defined by a rectangular shaped lower surface proximal to the receiving section and an opposing rectangular shaped upper surface distal to the receiving section and formed at an angle relative to the lower surface;

wherein at least two edges of the rectangular shaped lower surface are adjoined by edges of a separate triangular prism shaped facet;

wherein the rectangular shaped upper surfaces are defined by increasing slopes from the optic center;

wherein the rectangular shaped upper surfaces are configured so as to define the concavity of the concave arcuate emitting section;

wherein the receiving surface is configured to direct light incident thereupon through the intermediate section to a triangular prism shaped facet of the concave arcuate emitting section;

wherein each triangular prism shaped facet of the plurality of triangular prism shaped facets is configured to redirect light received from the receiving surface; and

wherein substantially each triangular prism shaped facet of the plurality of triangular prism shaped facets is configured to redirect light in a direction unique from the other triangular prism shaped facets of the plurality of triangular prism shaped facets.

2. The optic of claim 1 wherein the intermediate section comprises a plurality of collimating sections;

and wherein each collimating section of the plurality of collimating sections is associated with a respective triangular prism shaped facet of the plurality of triangular prism shaped facets.

3. The optic of claim 1 wherein each triangular prism shaped facet is positioned at some distance from a center of the optic;

wherein triangular prism shaped facets generally nearer to the center are configured to redirect light in a direction that is generally closer to orthogonal to a plane defined by a section of the receiving surface from which light is directed so as to be incident upon the triangular prism shaped facet; and

wherein triangular prism shaped facets generally further from the center are configured to redirect light in a direction that is generally further from orthogonal to a plane defined by a section of the receiving surface from which light is directed so as to be incident upon the triangular prism shaped facet.

4. The optic of claim 1 wherein each triangular prism shaped facet of the plurality of triangular prism shaped facets is configured to be independently illuminated with respect to other adjacent triangular prism shaped facets.

5. The optic of claim 1 wherein two triangular prism shaped facets are configured to be independently illuminated with respect to other adjacent triangular prism shaped facets.

6. The optic of claim 1 wherein all triangular prism shaped facets are configured to be illuminated as a monolithic unit.

7. The optic of claim 6 wherein each facet is configured to redirect light so as to form a single combined light.

8. The optic of claim 1 wherein the receiving surface is generally planar.

9. A lighting device for emitting light in selective directions comprising:

a first light source structure member having an outer surface;

a first plurality of light sources attached to the outer surface of the light source structure member;

a controller functionally coupled to the first plurality of light sources;

a power supply positioned in electrical communication with at least one of the controller and the first plurality of light sources; and

a first optic having a receiving section comprising a receiving surface, an intermediate section, and a concave arcuate emitting section, the concave arcuate emitting section comprising a plurality of triangular prism shaped facets, and the first optic being carried by the first light source structure member;

wherein the triangular prism shaped facets are defined by a rectangular shaped lower surface proximal to the receiving section and an opposing rectangular shaped upper surface distal to the receiving section and formed at an angle relative to the lower surface;

wherein at least two edges of the rectangular shaped lower surface are adjoined by edges of a separate triangular prism shaped facet;

wherein the rectangular shaped upper surfaces are defined by increasing slopes from the optic center;

wherein the rectangular shaped upper surfaces are configured so as to define the concavity of the concave arcuate emitting section;

wherein each light source of the first plurality of light sources is positioned such that light emitted thereby is received by the receiving surface, directed through the intermediate section, and emitted through a triangular prism shaped facet of the plurality of triangular prism shaped facets of the first optic;

wherein each triangular prism shaped facet of the plurality of triangular prism shaped facets is configured to redirect light in a direction unique from the other triangular prism shaped facets of the plurality of triangular prism shaped facets; and

wherein the controller is configured to selectively operate each light source of the first plurality of light sources.

10. The lighting device of claim 9 wherein the intermediate section comprises a plurality of collimating sections;

wherein each collimating section of the plurality of collimating sections is associated with a triangular prism shaped facet of the plurality of triangular prism shaped facets; and

wherein each collimating section is configured to collimate light in the direction of the associated triangular prism shaped facet emitted by a light source of the first plurality of light sources.

11. The lighting device of claim 9 wherein the first plurality of light sources comprises a light-emitting diode.

12. The lighting device of claim 9 wherein the outer surface is configured to be planar such that the first plurality of light sources are positioned thereupon so as to be coplanar;

wherein the receiving surface is generally planar; and

wherein the receiving surface is positioned so as to be generally parallel to a plane defined by the first plurality of light sources.

13. The lighting device of claim 9 wherein each triangular prism shaped facet is singularly associated with a single light source of the first plurality of light sources.

14. The lighting device of claim 9 wherein two or more triangular prism shaped facets are associated with a single light source of the first plurality of light sources.

15. The lighting device of claim 9 wherein each triangular prism shaped facet is associated with two or more light sources of the first plurality of light sources.

16. The lighting device of claim 15 wherein each of the two or more light sources associated with each triangular prism shaped facet emit light that combines to form a combined light;

and wherein the combined light is a white light.

17. The lighting device of claim 9 further comprising:

a second light source structure member having an outer surface;

a second plurality of light sources positioned on the second light source structure member; and

a second optic having a receiving section comprising a generally planar receiving surface, an intermediate section, and an emitting section, the emitting section comprising a plurality of triangular prism shaped facets;

wherein each light source of the second plurality of light sources is positioned such that light emitted thereby is received by the receiving surface, directed through the intermediate section, and emitted through a triangular prism shaped facet of the plurality of triangular prism shaped facets of the second optic;

wherein each triangular prism shaped facet of the plurality of triangular prism shaped facets of the second optic is configured to redirect light in a direction unique from the other triangular prism shaped facets of the plurality of triangular prism shaped facets of the second optic;

wherein the power supply is positioned in electrical communication with at least one of the controller, the first plurality of light sources, and the second plurality of light sources;

wherein the controller is configured to selectively operate each light source of the first and second plurality of light sources;

wherein the receiving surface of the first optic defines a first plane, and the receiving surface of the second optic defines a second plane; and

wherein the first plane is skew to the second plane.

18. The lighting device of claim 17 wherein a section of the first light source structure member interfaces with a section of the second light source structure member.

19. The lighting device of claim 17 wherein the first plane is perpendicular to the second plane.

20. A lighting device for emitting light in selective directions comprising:

a plurality of lighting structures, each lighting structure of the plurality of lighting structures comprising;

a light source structure member having an outer surface and an inner surface;

a plurality of light sources attached to the outer surface of the light source structure member; and

an optic comprising a receiving section comprising a receiving surface, an intermediate section, and a concave arcuate emitting section, the concave arcuate emitting section comprising a plurality of triangular prism shaped facets, the optic being carried by the light source structure member adjacent to the outer surface; and

a controller functionally coupled to the plurality of light sources of each of the lighting structures of the plurality of lighting structures;

a power supply positioned in electrical communication with at least one of the controller and the plurality of light sources of the plurality of lighting structures;

wherein the triangular prism shaped facets are defined by a rectangular shaped lower surface proximal to the receiving section and an opposing rectangular shaped upper surface distal to the receiving section and formed at an angle relative to the lower surface;

wherein at least two edges of the rectangular shaped lower surface are adjoined by edges of a separate triangular prism shaped facet;

wherein the rectangular shaped upper surfaces are defined by increasing slopes from the optic center;

wherein the rectangular shaped upper surfaces are configured so as to define the concavity of the concave arcuate emitting section;

wherein the plurality of lighting structures are positioned such that the inner surface of each light source structure member cooperates to define an internal cavity;

wherein the controller is configured to selectively operate each light source of the plurality of light sources of each lighting structure;

wherein each light source of the plurality of light sources of each lighting structure is positioned such that light emitted thereby is received by the receiving surface of the same lighting structure, directed through the intermediate section, and emitted through a triangular prism shaped facet of the plurality of triangular prism shaped facets of the optic of the same lighting structure; and

wherein each triangular prism shaped facet of the plurality of triangular prism shaped facets of each lighting structure is configured to redirect light in a direction unique from the other facets of the plurality of facets of the same lighting structure.

21. The lighting device of claim 20 wherein each lighting structure of the plurality of lighting structures has the same geometry;

and wherein the plurality of lighting structures are positioned so as to form a regular polyhedral shape.