Discrete light guide-based planar illumination area
US8064743B2 · kind B2 · utility
62Cited by
150References
21Claims
0Family size
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Key dates
| Filing date | Sep 23, 2010 |
| Grant date | Nov 22, 2011 |
| Priority date | — |
| Expiry date | Sep 23, 2030 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B6/0088
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
In one aspect, a planar illumination area includes two light-guide elements, each with an out-coupling region. At least a portion of each out-coupling region overlaps with at least a portion of the other. The overlapping region emits a substantially uniform light output power.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.