Digital indicator device for indicating photographing exposure values in the form of digits
US4135795A · kind A · utility
4Cited by
1References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 12, 1977 |
| Grant date | Jan 23, 1979 |
| Priority date | — |
| Expiry date | Jul 12, 1997 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03B17/20
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Very precise indications of the Apex indication values in a camera are displayed through the viewfinder. The nominal value is displayed numerically and further indications are provided to display fractional parts of one step of a nominal Apex indication value.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.