Photographing apparatus for an endoscope
US4284338A · kind A · utility
8Cited by
1References
7Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 6, 1980 |
| Grant date | Aug 18, 1981 |
| Priority date | — |
| Expiry date | Feb 6, 2000 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03B17/48
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A camera for an endoscope has a transmitting circuit for transmitting a release signal and a modulated signal modulated by a photocurrent signal, and a superposing circuit for superposing the modulated signal onto a motor drive line connecting to a film wind motor. A light source unit has a demodulated circuit for demodulating the modulated signal transmitting from the transmitting circuit, through the motor drive line. An exposure measuring circuit calculates an optimum exposure by using the demodulated signal from the demodulating circuit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.