System for exposure measurement and/or focus detection by means of image senser
US4047187A · kind A · utility
209Cited by
7References
38Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 31, 1975 |
| Grant date | Sep 6, 1977 |
| Priority date | — |
| Expiry date | Mar 31, 1995 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG08B3/10
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
The present invention relates to a system for exposure measurement and/or focus detection by means of image senser such as photo diode array (MOS image senser), CCD (charge coupled devices) consisting of a plural number of adjacently disposed respectively integrated fine light sensing elements whereby the image pattern of the object is scanned purely electrically in such a manner that the then obtained output of each light sensing element is converted into a digital value one after another for processing.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.