Image pickup apparatus with correction of held exposure parameters and lens spherical aberration correction
US6707500B1 · kind B1 · utility
17Cited by
13References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 12, 1996 |
| Grant date | Mar 16, 2004 |
| Priority date | — |
| Expiry date | Mar 12, 2016 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N23/70
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
In an image pickup apparatus, when the focal length of a zoom lens is caused to change while the apparatus is in a state of being AE locked to retain an exposure control state of an exposure control circuit which is arranged to control the state of exposure according to a video signal, the apparatus is capable of maintaining the state of exposure obtained when the AE lock is made by correcting any change in the state of exposure caused by a change in F number resulting from the change of the focal length.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.