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| 국가/구분 | United States(US) Patent 등록 |
|---|---|
| 국제특허분류(IPC7판) |
|
| 출원번호 | US-0638242 (2015-03-04) |
| 등록번호 | US-9920901 (2018-03-20) |
| 발명자 / 주소 |
|
| 출원인 / 주소 |
|
| 대리인 / 주소 |
|
| 인용정보 | 피인용 횟수 : 0 인용 특허 : 448 |
An LED lensing arrangement for lighting fixtures includes (1) a rigid light-transmissive outer structure having an outwardly-facing light-exit surface and an outer-structure light-input surface, (2) an optically-clear molded polymeric inner structure having a light-entrance surface and a light-outpu
An LED lensing arrangement for lighting fixtures includes (1) a rigid light-transmissive outer structure having an outwardly-facing light-exit surface and an outer-structure light-input surface, (2) an optically-clear molded polymeric inner structure having a light-entrance surface and a light-output surface which is adhered to the outer-structure light-input surface, the inner structure being of a material which is pourable upon molding, one example being a liquid silicone rubber (LSR) material, and (3) at least one LED light source secured with respect to and optically coupled to the inner-structure light-entrance surface.
1. An LED lensing arrangement for lighting fixtures comprising: a rigid light-transmissive outer structure having a light-exit surface and an elongate outer-structure light-input surface;an elastomeric optically-clear inner structure having a light-entrance surface defining an inner cavity with a li
1. An LED lensing arrangement for lighting fixtures comprising: a rigid light-transmissive outer structure having a light-exit surface and an elongate outer-structure light-input surface;an elastomeric optically-clear inner structure having a light-entrance surface defining an inner cavity with a light-receiving opening, a pair of outward lateral surfaces configured for receiving and redirecting lateral light from the inner cavity toward an elongate light-output surface which is adhered to the elongate outer-structure light-input surface; andat least one LED light source optically coupled with respect to and spaced from the light-entrance surface of the elastomeric inner structure. 2. The LED lensing arrangement of claim 1 having a plurality of LED light sources. 3. The LED lensing arrangement of claim 1 wherein the outer-structure light-input surface and the light-exit surface are in non-parallel planes. 4. The LED lensing arrangement of claim 3 wherein the outer-structure light-input surface and the light-exit surface are in substantially perpendicular planes. 5. The LED lensing arrangement of claim 4 wherein the outer structure is a sheet-like member having two principal surfaces and the outer-structure light-input surface, one of the two principal surfaces being the light-exit surface and the other being a light-extraction surface configured to reflect light from the at least one LED light source toward the light-exit surface. 6. The LED lensing arrangement of claim 5 having a plurality of LED light sources along the light-entrance surface. 7. The LED lensing arrangement of claim 6 wherein the plurality of LED light sources are arranged substantially along a single line. 8. The LED lensing arrangement of claim 5 wherein the light-extraction surface includes a plurality of angled surfaces. 9. The LED lensing arrangement of claim 5 wherein the two principal surfaces are angled to one another such that the outer structure has a wedge-like cross-section in a plane perpendicular to the light-exit and light-input surfaces of the outer structure. 10. The LED lensing arrangement of claim 1 wherein the outer-structure light-input surface and the inner-structure light-output surface are planar. 11. The LED lensing arrangement of claim 1 wherein the inner-structure light-output surface is substantially coextensive with the outer-structure light-input surface. 12. The LED lensing arrangement of claim 1 wherein the inner structure is adhered to a glass sheet which forms the rigid outer structure. 13. The LED lensing arrangement of claim 1 wherein the inner structure is a liquid silicone rubber (LSR) member. 14. The LED lensing arrangement of claim 13 wherein the LSR is an optical-grade LSR pourable upon molding. 15. The LED lensing arrangement of claim 13 wherein the LSR member has a Shore A durometer hardness of less than about 70. 16. The LED lensing arrangement of claim 1 wherein the outer structure is a sheet-like member having two principal surfaces and the outer-structure light-input surface, one of the two principal surfaces being the light-exit surface and the other being a light-extraction surface configured to reflect light from the at least one LED light source toward the outwardly-facing light-exit surface. 17. The LED lensing arrangement of claim 16 wherein the light-extraction surface includes a plurality of angled surfaces. 18. The LED lensing arrangement of claim 16 wherein the two principal surfaces are angled to one another such that the outer structure has a wedge-like cross-section in a plane perpendicular to the exit and input surfaces of the outer structure. 19. The LED lensing arrangement of claim 1 wherein the inner structure further comprises a surface with molded light-extraction characteristics configured to direct light from the light-entrance surface toward the light-output surface, the light-entrance surface being along a light-entrance edge configured to receive light from the at least one LED light source. 20. An LED lensing arrangement for lighting fixtures comprising: a rigid light-transmissive outer structure having a light-exit surface and an outer-structure light-input surface substantially coextensive with the light-exit surface;an elastomeric optically-clear inner structure having a light-entrance surface and a light-output surface which is adhered to the outer-structure light-input surface; andat least one LED light source optically coupled with respect to the light-entrance surface of the elastomeric inner structure. 21. The LED lensing arrangement of claim 20 having a plurality of LED light sources. 22. The LED lensing arrangement of claim 20 wherein the light-entrance surface of the inner structure and the light-exit surface of the outer structure are in non-parallel planes. 23. The LED lensing arrangement of claim 22 wherein the outer-structure light-input and light-exit surfaces are in substantially parallel planes. 24. The LED lensing arrangement of claim 23 wherein the outer-structure light-input surface and the inner-structure light-output surface are planar. 25. The LED lensing arrangement of claim 23 wherein the inner-surface light-output surface is substantially coextensive with the outer-structure light-input surface. 26. The LED lensing arrangement of claim 22 having a plurality of LED light sources along the inner-structure light-entrance surface. 27. The LED lensing arrangement of claim 26 wherein the plurality of LED light sources are arranged substantially along a single line. 28. The LED lensing arrangement of claim 20 wherein the outer-structure light-exit surface is substantially planar. 29. The LED lensing arrangement of claim 20 wherein: the outer structure is a sheet-like member having two principal surfaces, one of the two principal surfaces being the light-exit surface and the other being the outer-structure light-input surface; andthe inner-structure light-output surface engages at least a portion of the outer-structure light-input surface. 30. The LED lensing arrangement of claim 29 wherein the inner-structure light-output surface engages a major portion of the outer-structure light-input surface. 31. The LED lensing arrangement of claim 29 wherein the inner structure further comprises a surface with molded light-extraction characteristics configured to direct light from the light-entrance surface toward the light-output surface, the light-entrance surface being along a light-entrance edge configured to receive light from the at least one LED light source. 32. The LED lensing arrangement of claim 31 wherein the outer structure is a glass sheet. 33. The LED lensing arrangement of claim 32 wherein the inner structure is a liquid silicone rubber (LSR) member. 34. The LED lensing arrangement of claim 33 wherein the LSR is an optical-grade LSR pourable upon molding. 35. The LED lensing arrangement of claim 33 wherein the LSR member has a Shore A durometer hardness of less than about 70. 36. The LED lensing arrangement of claim 20 wherein the outer-structure light-input surface is substantially planar. 37. The LED lensing arrangement of claim 36 wherein the outer structure is a substantially planar glass sheet. 38. The LED lensing arrangement of claim 20 wherein the inner structure is adhered to a glass sheet forming the rigid outer structure. 39. The LED lensing arrangement of claim 20 wherein the inner structure is of a liquid silicone rubber (LSR) having a viscosity less than about 10,000 centipoise upon molding. 40. The LED lensing arrangement of claim 39 wherein the LSR has a viscosity less than about 5,000 centipoise upon molding. 41. The LED lensing arrangement of claim 40 wherein the LSR member has a Shore A durometer hardness of less than about 70.
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