Auto/manual camera employing common lens focusing data
US4374613A · kind A · utility
6Cited by
4References
13Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 4, 1981 |
| Grant date | Feb 22, 1983 |
| Priority date | — |
| Expiry date | Jun 4, 2001 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B7/40
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A photographic camera having both automatic and manual focusing modes of operation includes apparatus for establishing an electrical signal representative of lens focus position for lens focusing related purposes when in its automatic focusing mode of operation, is capable of generating this electrical signal for camera functions other than lens focusing by automatically positioning the lens from its initial manually focused position to a reference position and then back to its initial position, when the camera is operated in its manual focus control mode.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.