Exposure control device in a camera
US5313246A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 22, 1992 |
| Grant date | May 17, 1994 |
| Priority date | — |
| Expiry date | Dec 22, 2012 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B7/34
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An exposure control device in a camera comprises a focus detection device for calculating a plurality of defocus amounts corresponding to a plurality of focus detection areas, a weight producing device for producing a plurality of weights corresponding to the plurality of focus detection areas on the basis of the plurality of defocus amounts, a light metering device for light-metering a plurality of light metering areas at least partly overlapping with the plurality of focus detection areas and producing a plurality of light metering outputs, and an exposure amount calculating device for calculating a proper exposure amount on the basis of the plurality of weights and the plurality of light metering outputs.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.