The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 26, 2002
Filed:
Jul. 05, 2001
Isamu Hirai, Tokyo, JP;
Yoshikazu Iida, Tokyo, JP;
Asahi Kogaku Kogyo Kabushiki Kaisha, Tokyo, JP;
Abstract
A photometry device has a normal light photometry sensor and a external light sensor. The normal light photometry sensor performs photometry with respect to an object. The external light sensor performs photometry with respect color components of the external light. An exposure amount of an object is determined based on an output of a normal light sensor. If a difference between the exposure values is greater than the predetermined value, a color judged in the colorimetry procedure is forcibly set to “colorless” and no substantial colorimetric compensation is performed. If the Bv difference is not greater than the predetermined value, the light source compensation data preliminary stored is used for the colorimetric compensation.