Camera and electronic flash combination
US4363542A · kind A · utility
12Cited by
4References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 11, 1979 |
| Grant date | Dec 14, 1982 |
| Priority date | — |
| Expiry date | Jun 11, 1999 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03B2215/05
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A camera and electronic flash combination is provided which permits the electrical circuits of a camera and an electronic flash to be coupled to each other through four terminals, thus achieving an efficient transfer of signal between both units. The electronic flash includes an illumination control circuit which can be controlled by an illumination control signal from the camera, preferentially from an output from a photometric circuit contained in the electronic flash, by an operation of a changeover switch which is disposed within the camera.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.