Optical element and illuminating device, display device, and electronic device, using the optical element
US8804073B2 · kind B2 · utility
2Cited by
2References
1Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 5, 2007 |
| Grant date | Aug 12, 2014 |
| Priority date | — |
| Expiry date | Jun 8, 2029 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B5/223
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
The invention is an optical element for limiting the propagation of light in oblique directions with respect to the optical element surface, and includes: a transparent substrate and a light ray control layer formed on a flat surface of said transparent substrate, wherein the light ray control layer has a transparent portion and a light absorbing portion, the transparent portion has a plurality of independent pattern elements having an identical configuration separated by said light absorbing portion and arranged at intervals.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.