Photometry device of camera
US5987265A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Mar 10, 1998 |
| Grant date | Nov 16, 1999 |
| Priority date | — |
| Expiry date | Mar 10, 2018 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03B7/093
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A photometry device of a camera has a photometry circuit which measures the luminance value of the object field, a colorimetry circuit which measures the color balance of the object field, and a scene discrimination unit which discriminates the scene on the basis of the output from the colorimetry circuit. The device calculates the proper exposure value of the object field on the basis of the outputs from the photometry circuit and scene discrimination unit. Scene discrimination is preferably made using photographing mode information, photographing distance information, or current time information to improve discrimination accuracy.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.