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:
Jan. 12, 1988
Filed:
Aug. 21, 1986
Applicant:
Inventor:
Tozawa Hiroyuki, Tokyo, JP;
Assignee:
Eko Instruments Trading Co., Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01J / ;
U.S. Cl.
CPC ...
2502 / ; 356226 ;
Abstract
A method for measuring the amount of direct solar radiation and an apparatus according to the method. The invention provides a light sensor which rotates at a constant speed while scanning the sky including the sun. The differential coefficient of the radiation received is obtained from the output of the light-receiving element, thus substantially eliminating the scattered light component from the output. The preferred embodiment of the light-receiving element is a pyroelectric detector.