Photometry device
US6507709B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 8, 2000 |
| Grant date | Jan 14, 2003 |
| Priority date | — |
| Expiry date | Dec 8, 2020 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03B7/09979
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A photometry device for a camera includes a normal light metering system having spectral sensitivity characteristics close to visual sensitivity characteristics, and a plurality of light metering systems having spectral sensitivity characteristics that are different from those of the normal light metering system. Further provided is an exposure amount determining system that determines an exposure amount of an object in accordance with an output of the normal light metering system, a colorimetry system that judges a color of the object in accordance with the outputs of said plurality of light metering systems. An exposure compensation amount is determined in accordance with the color judged by the colorimetry system, and then, the exposure amount is compensated in accordance with the exposure compensation amount.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.