Electronic flash unit
US4492451A · kind A · utility
7Cited by
6References
2Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 5, 1984 |
| Grant date | Jan 8, 1985 |
| Priority date | — |
| Expiry date | Jul 5, 2004 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03B2215/0532
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An electronic flash unit having a thin-walled housing (2) in which is accommodated a reflector (3) with a discharge flash lamp (4) and which on the light-emanating side is provided with a photosensitive cell (6) for measuring a quantity of light reflected from an object to be photographed, which cell switches off the discharge flash lamp (4) by means of an electric circuit after measurement of a light dose. According to the invention, the wall of the housing (2) is provided with means, such as an upright edge (7), for receiving an end of a light-conducting fiber cable (9), which end is arranged in front of the photosensitive cell.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.