Light emitting panel
View Patent ↗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 60°. One or more light conditioners are positioned adjacent the base panel to receive and condition light produced by the light emitting elements.
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 60°; 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 100°.
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 100°;
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 100°;
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 100°, 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 60°, 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 60°;
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 60°;
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.