Exposure control device in a camera
US3996593A · kind A · utility
7Cited by
2References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 1, 1975 |
| Grant date | Dec 7, 1976 |
| Priority date | — |
| Expiry date | Oct 1, 1995 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03B7/085
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A method and apparatus for automatic iris control of cameras having an exposure value indicator located within the camera's viewfinder. The indicator emits light such that a photosensor when moving over the indicator face, senses the light and through associated circuitry and mechanisms stops the movement of an adjusting iris.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.