ORIENTABLE LENS FOR A LED FIXTURE

• US 20100271829A1
• Filed: 07/08/2010
• Published: 10/28/2010
• Est. Priority Date: 06/13/2008
• Status: Active Grant

• Current Assignee: Signify Holding B.V. (Signify N.V.)
• Original Assignee: Lumec Inc. (Koninklijke Philips N.V.)
• Inventors: LAPORTE, Jean-Francois
• Granted Patent: US 7,959,326 B2
• Time in Patent Office: Days
• US Class Current: 362/308
• CPC Class Codes: F21V 13/04 the elements being reflectors and refractors for vehicle rear lights F21S43/40
• CPC Class Codes: F21V 14/06 by movement of refractors in vehicle head lamps F21S41/635
• CPC Class Codes: F21V 17/02 with provision for adjustment F21V17/04 - F21V17/08 take precedence
• CPC Class Codes: F21V 29/70 characterised by passive heat-dissipating elements, e.g. heat-sinks
• 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 5/04 of lens shape
• CPC Class Codes: F21V 5/08 producing an asymmetric light distribution
• CPC Class Codes: F21V 7/0091 using total internal reflection
• CPC Class Codes: F21W 2131/103 of streets or roads
• CPC Class Codes: F21Y 2105/10 comprising a two-dimensional array of point-like light-generating elements
• CPC Class Codes: F21Y 2115/10 Light-emitting diodes [LED]
• CPC Class Codes: Y10S 362/80 Light emitting diode

Abstract

A mounting surface for mounting a plurality of LEDs has a plurality of orientable lenses each individually affixed about a single LED. Each orientable lens may have a primary reflector and a refracting lens that direct light emitted from a single LED to a reflective surface of the orientable lens that reflects the light off a primary LED light output axis.

Claims

1. A lens placeable about a LED having a light emitting portion capable of emitting a light output, said lens comprising:

a reflector configured to surround a majority of said light emitting portion of said LED;

a refracting lens interior to at least a portion of said reflector and positioned to intersect some of said light output when said lens is individually placed about said LED;

an angled reflective surface, a majority of said angled reflective surface positioned more distal said LED than said reflector and said refracting lens when said lens is individually placed about said LED;

wherein said reflector is oriented to direct a majority of said light output incident thereon toward said angled reflective surface;

wherein said refracting lens is oriented to direct a majority of said light output incident thereon toward said angled reflective surface;

wherein said angled reflective surface is oriented to reflect a majority of said light output incident thereon in an off-axis direction; and

wherein said lens is individually placeable about said LED.

2. The lens of claim 1, wherein said reflector is configured to completely surround said light emitting portion of said LED.

3. The lens of claim 2, wherein said reflector comprises at least one primary reflector portion having a first configuration and at least one secondary reflector portion having a second configuration distinct from said first configuration.

4. The lens of claim 3, wherein said reflector comprises a first and second said primary reflector portion and said secondary reflector portion is interposed between said first primary reflector portion and said second primary reflector portion.

5. The lens of claim 1, wherein a majority of said light output incident on said angled reflective surface is directed therefrom within a 60°

range in a horizontal plane.

6. The lens of claim 5, wherein a majority of said light output incident on said angled reflective surface is directed therefrom within a 60°

range in a vertical plane.

7. The lens of claim 1, wherein said primary reflector comprises a parabolic reflector.

8. The lens of claim 1, wherein said reflective surface comprises at least a first reflective face at a first orientation and a second reflective face at a second orientation unique from said first orientation.

9. The lens of claim 1, further comprising a base coupled to and provided peripherally of said reflector.

10. A lens placeable about a LED having a light emitting portion capable of emitting a light output, said lens comprising:

a base configured to contact a surface provided peripherally of said LED;

a reflector configured to surround a majority of said light emitting portion of said LED;

a refracting lens at least partially surrounded by said reflector and positioned to intersect some of said light output;

a prism having a reflective surface, a majority of said reflective surface positioned more distal said base than said reflector and said refracting lens;

wherein said reflector is oriented to direct a majority of said light output incident thereon toward said reflective surface;

wherein said refracting lens is oriented to direct a majority of said light output incident thereon toward said reflective surface;

wherein said reflective surface is oriented to reflect a majority of said light output incident thereon through and out said prism in an off-axis direction; and

wherein said base, said reflector, said refracting lens, and said prism are a cohesive integrally formed unit.

11. The lens of claim 10, wherein said reflecting prism of said lens is positioned and configured to reflect a majority of said light in a vertical plane within a range of 40°

in said off-axis direction.

12. The lens of claim 10, wherein said lens is configured to direct at least 70% of said light emitted from each said LED in said off-axis direction.

13. The lens of claim 10, wherein the direction of a majority of said light output reflected by said reflective surface is altered prior to or simultaneous with exiting said prism.

14. The lens of claim 10, wherein said base includes at least one alignment structure thereon.

15. The lens of claim 10, wherein said reflective surface comprises at least a first reflective face at a first orientation and a second reflective face at a second orientation unique from said first orientation.

16. A lens placeable about a LED having a light emitting portion capable of emitting a light output, said lens comprising:

a base configured to contact a surface provided peripherally of said LED, said base having an alignment structure thereon;

wherein said alignment structure is configured for interaction with other non-lens structure to thereby orient said lens in a desired rotational orientation;

a reflector coupled to said base and configured to surround a majority of said light emitting portion of said LED;

a reflective surface coupled to said base, a majority of said reflective surface positioned more distal said base than said reflector;

wherein said reflector is oriented to direct a majority of said light output incident thereon toward said reflective surface; and

wherein said reflective surface is oriented to reflect a majority of said light output incident thereon through and out said prism in an off-axis direction.

17. The lens of claim 16 further comprising a refracting lens positioned to intersect some of said light output.

18. The lens of claim 17 wherein said refracting lens is at least partially surrounded by said reflector.

19. The lens of claim 16 wherein said alignment structure comprises an alignment protrusion.

20. The lens of claim 19 wherein said alignment protrusion extends in a direction generally opposite said surface provided peripherally of said LED when said lens is affixed about said LED.