Exposure system for a camera
US4354751A · kind A · utility
7Cited by
5References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 18, 1981 |
| Grant date | Oct 19, 1982 |
| Priority date | — |
| Expiry date | Mar 18, 2001 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03B7/16
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An exposure system for use in a camera includes a light emitting apparatus which is capable of selectively projecting a first type of light which flashes instantaneously with a predetermined light quantity and a second type of light which flashes for a prolonged period of time with a predetermined constant light intensity, and a selecting circuit for selecting the first type of light when a target object to be photographed is located a predetermined distance away from the camera, and the second type of light when the target object is located closer to the camera than the predetermined distance.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.