Photographic mode selector system
US4371243A · kind A · utility
3Cited by
7References
42Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | Aug 31, 1981 |
| Grant date | Feb 1, 1983 |
| Priority date | — |
| Expiry date | Aug 31, 2001 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03B7/087
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A camera detects which of a number of operating modes is dialed into a flash unit by sensing the current level produced by a source. In response to dialing of a daylight EE mode, the camera measures the brightness of the object to be photographed and conforms the diaphragm aperture to a preselected shutter speed. In one flash mode the flash unit transmits desired aperture and shutter speed data suitable for flash and the camera automatically responds. In another mode, the shutter speed is set into the camera and the camera automatically controls the diaphragm aperture on the basis of data transmitted by the flash unit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.