In one embodiment, a light emitting panel includes a base panel and a plurality of light emitting elements mounted to the base panel. Each of the light emitting elements produces an illumination pattern having a region of substantially uniform intensity that extends over a radiation angle of at leas
In one embodiment, a light emitting panel includes a base panel and a plurality of light emitting elements mounted to the base panel. Each of the light emitting elements produces an illumination pattern having a region of substantially uniform intensity that extends over a radiation angle of at least about 60째. One or more light conditioners are positioned adjacent the base panel to receive and condition light produced by the light emitting elements.
대표청구항▼
The invention claimed is: 1. A light emitting panel, comprising: a base panel; a plurality of light emitting elements mounted to said base panel, each of said plurality of light emitting elements producing an illumination pattern having a region of substantially uniform intensity that extends over
The invention claimed is: 1. A light emitting panel, comprising: a base panel; a plurality of light emitting elements mounted to said base panel, each of said plurality of light emitting elements producing an illumination pattern having a region of substantially uniform intensity that extends over a radiation angle of at least about 60째; and one or more light conditioners to receive and condition light produced by said plurality of light emitting elements. 2. The light emitting panel of claim 1, wherein each of said plurality of light emitting elements comprises a light emitting diode. 3. The light emitting panel of claim 2, wherein each region of substantially uniform light intensity extends over a radiation angle of at least about 100째. 4. The light emitting panel of claim 2, wherein the light emitting diodes emit two or more different wavelengths of light. 5. The light emitting panel of claim 1, wherein said base panel comprises a printed circuit board, said printed circuit board electrically connecting each of said light emitting elements to a supply of electric current. 6. The light emitting panel of claim 1, further comprising a reflective surface provided on said base panel. 7. The light emitting panel of claim 1, wherein the light conditioners comprise: a diffuser positioned adjacent said base panel, said diffuser receiving and diffusing light produced by said plurality of light emitting elements; and a brightness enhancer positioned adjacent said diffuser to collect diffused light from said diffuser and direct light out of a front surface of the brightness enhancer. 8. The light emitting panel of claim 7, wherein said brightness enhancer comprises a sheet-like material defining a plurality of prisms. 9. A display system, comprising: a base panel; a plurality of light emitting elements mounted to said base panel, each of said plurality of light emitting elements producing an illumination pattern comprising a region of substantially uniform intensity that extends over a radiation angle of at least about 100째; one or more light conditioners to receive and condition light produced by said plurality of light emitting elements; and a display device positioned adjacent said light conditioners. 10. The display system of claim 9, wherein the light conditioners comprise: a diffuser positioned adjacent said base panel, said diffuser receiving and diffusing light produced by said plurality of light emitting elements; and a brightness enhancer positioned adjacent said diffuser, said brightness enhancer receiving diffused light from said diffuser. 11. The display system of claim 10, wherein said display device comprises a liquid crystal display panel. 12. A light emitting panel, comprising: a base panel having a reflective surface provided thereon; a plurality of light emitting elements mounted to said base panel, each of said plurality of light emitting elements producing an illumination pattern that comprises a region of substantially uniform intensity that extends over a radiation angle of at least about 100째; diffuser means positioned adjacent said base panel for diffusing light produced by said plurality of light emitting elements; and brightness enhancing means positioned adjacent said diffuser means for enhancing the brightness of diffused light from said diffuser means. 13. The light emitting panel of claim 12, wherein each of said plurality of light emitting elements comprises a light emitting diode. 14. A light emitting panel, comprising: a base panel; a plurality of light emitting elements mounted to said base panel, each of said plurality of light emitting elements comprising a light emitting diode which produces an illumination pattern having a region of substantially uniform intensity that extends over a radiation angle of at least about 100째, said light emitting diode comprising a reflector cup, a light emitting junction mounted within said reflector cup, and a lens positioned over said reflector cup and said light emitting junction; and one or more light conditioners to receive and condition light produced by said plurality of light emitting elements. 15. The light emitting panel of claim 14, wherein said lens comprises a substantially flat light output surface. 16. The light emitting panel of claim 14, wherein said lens comprises a light output surface comprising a convex portion and a concave portion. 17. A light emitting panel, comprising: a base panel; a plurality of light emitting elements mounted to said base panel, each of said plurality of light emitting elements producing an illumination pattern having a region of substantially uniform intensity that extends over a radiation angle of at least about 60째, said region of substantially uniform intensity further comprising a minimum intensity and a maximum intensity, the minimum intensity not being less than about 50% of the maximum intensity; and one or more light conditioners to receive and condition light produced by said plurality of light emitting elements. 18. A light emitting panel, comprising: a base panel; a plurality of light emitting elements mounted to said base panel, each of said plurality of light emitting elements producing an illumination pattern having a region of substantially uniform intensity that extends over a radiation angle of at least about 60째; one or more light conditioners to receive and condition light produced by said plurality of light emitting elements; and a reflective surface provided on said base panel, said reflective surface comprising a specular reflective surface. 19. A light emitting panel, comprising: a base panel; a plurality of light emitting elements mounted to said base panel, each of said plurality of light emitting elements producing an illumination pattern having a region of substantially uniform intensity that extends over a radiation angle of at least about 60째; one or more light conditioners to receive and condition light produced by said plurality of light emitting elements; and a reflective surface provided on said base panel, said reflective surface comprising a diffuse reflective surface.
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