Image pickup apparatus provided with a flash device
US6597869B2 · kind B2 · utility
4Cited by
10References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 8, 2002 |
| Grant date | Jul 22, 2003 |
| Priority date | — |
| Expiry date | Jul 8, 2022 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03B2215/0503
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
When a stop aperture formed by a shutter blade has reached a diameter corresponding to a predetermined f-number, a flash light is emitted and an exposure is performed with the flash light. Successively, the diameter of the stop aperture is gradually increased. When the stop aperture has reached a diameter corresponding to a set f-number, a color-temperature conversion filter is placed at a photographic optical path. Another exposure is performed with an illumination light which has passed through the color-temperature conversion filter.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.