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:
Dec. 01, 1992
Filed:
Dec. 21, 1990
Jiro Arima, Osaka, JP;
Naoyo Takata, Osaka, JP;
Minolta Camera Co., Ltd., Osaka, JP;
Abstract
A measuring apparatus includes a flash tube for emitting flash light to a target in a first short period and a second short period, a detector for detecting amounts of light from the target in the flash light of the first short period and the flash light of the second short period, a receiver for receiving the flash light irrespective of the target to detect each reference light amount, an evaluator for evaluating the flash light according to the reference light amounts to generate a compensation signal for a characteristic of the flash light with respect to a characteristic of an ideal light source, and a calculator for calculating a characteristic value of the target under ideal light source according to the target light amount and the compensation signal.