Optical film having luminous flux
US7768710B2 · kind B2 · utility
2Cited by
4References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 31, 2008 |
| Grant date | Aug 3, 2010 |
| Priority date | — |
| Expiry date | Mar 5, 2029 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B27/0972
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An optical film has symmetrical arrangement light-collecting units. The light-collecting units can be extended for several times. The light-collecting unit has apex angles and base angles with different degrees. Thus, a uniform luminous flux and a good light intensity are obtained for the optical film.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.