Beam direction control element and method of manufacturing same
US8382299B2 · kind B2 · utility
3Cited by
4References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 8, 2010 |
| Grant date | Feb 26, 2013 |
| Priority date | — |
| Expiry date | Sep 8, 2030 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B5/003
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A beam direction control element has transparent areas and light absorption areas alternately arranged on a surface of a substrate, wherein the light absorption areas function as a louver for controlling the direction of a beam of light. The beam direction control element is manufactured by disposing an optically transparent material on a first transparent substrate to form transparent ridges which constitute the transparent areas, filling curable and photo-absorptive fluid in gaps between the transparent ridges, and then curing the fluid to form the light absorption areas.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.