Image pickup apparatus having, disposed between an image pickup optical system and an image pickup unit, a birefringent crystal optical member, a phase-difference-changing crystal optical member, and a birefringent organic film
US7720373B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Apr 26, 2006 |
| Grant date | May 18, 2010 |
| Priority date | — |
| Expiry date | Apr 5, 2028 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03B19/12
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
At least one exemplary embodiment is directed to an image pickup apparatus which includes an image pickup unit, a first optical member, a film, a second optical member, and a luminosity correcting filter. The image pickup unit includes an image sensor. The first optical member is operatively attached to the image pickup unit and formed of a birefringent crystal material. The film is disposed between the first optical member and an image pickup optical system and formed of an organic material. The second optical member is operatively attached to a first side of the film. The luminosity correcting filter is operatively attached to a second side of the film.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.