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. 24, 1981
Filed:
Oct. 31, 1979
Masafumi Yamazaki, Okaya, JP;
Shuichi Takayama, Hachioji, JP;
Kosaku Tsuboshima, Hachioji, JP;
Yoshio Nakajima, Hachioji, JP;
Teruo Iwasawa, Mitaka, JP;
Olympus Optical Company Limited, Tokyo, JP;
Abstract
A photometric system for use in an image pick-up device is disclosed. The photometric system comprises the steps of forming an image focussed by a camera lens system on a light receiver consisting of a plurality of charge transfer elements arranged in a picture element array; selectively deriving luminance signals of amplitude having a value within a range of about .+-.2 exposure values around a reference exposure value corresponding to a mean value between a maximum value and a minimum value of the amplitude of the luminance signals; and seeking a mean value of the selected luminance signals to photometrically measure the light of automatically selected portions on the average.