Exposure system for a camera
US4422743A · kind A · utility
13Cited by
8References
33Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 19, 1981 |
| Grant date | Dec 27, 1983 |
| Priority date | — |
| Expiry date | Mar 19, 2001 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03B2215/0564
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An exposure system for a camera includes a light emitting apparatus for emitting an artificial light toward an object. The light emitting apparatus is capable of selectively emitting a first type of light which flashes instantaneously, and a second type of light which flashes for a prolonged period of time. The intensity is maintained constant during the prolonged period of time. A camera produces a mode signal for switching the light emitting apparatus between a first mode in which the instantaneous flash light is emitted and a second mode in which the prolonged flash light is emitted.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.