Distance measuring arrangement
US4303981A · kind A · utility
2Cited by
5References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 19, 1979 |
| Grant date | Dec 1, 1981 |
| Priority date | — |
| Expiry date | Sep 19, 1999 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B7/305
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A distance measuring arrangement for use, for example, in a camera and the like equipped with an automatic focus control system which includes an illuminance intensity detecting portion for detecting the illuminance intensity of a target object and a distance signal correcting portion for correcting the distance signal from a distance measuring portion according to the output of the illuminance intensity detecting portion so as to obtain the distance signal not affected by the illuminance intensity of the target object.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.