Polarization conversion element and method for manufacturing the same
US8279523B2 · kind B2 · utility
4Cited by
13References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 21, 2008 |
| Grant date | Oct 2, 2012 |
| Priority date | — |
| Expiry date | Jul 11, 2030 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B5/3083
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A polarization conversion element includes: a plurality of light transmitting substrates sequentially bonded at a plurality of inclined planes thereof that form an angle of approximately 45° with respect to a light incident face and a light emitting face being approximately parallel to the light incident face; a retardation plate providing a phase difference to incident polarized light; a polarization separation film separating incident light into two types of polarized light; and an air layer. In the element, the polarization separation film and the air layer are alternately formed along the plurality of inclined planes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.