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. 21, 2025
Filed:
Mar. 01, 2022
Eko Instruments Co., Ltd., Tokyo, JP;
Toshikazu Hasegawa, Tokyo, JP;
Kees Hoogendijk, Tokyo, JP;
Mario Po, Tokyo, JP;
Isamu Chiba, Tokyo, JP;
EKO INSTRUMENTS CO., LTD., Tokyo, JP;
Abstract
A sunshine recorder has: a lens that emits, as projection light, natural light incident from half of the celestial sphere; a sensor that photoelectrically converts the projection light projected onto a light receiving surface, and outputs the photoelectrically converted projection light; and a determination circuit that determines the presence or absence of sunshine on the basis of an output of the sensor, wherein the sensor has a plurality of detection areas on the light receiving surface and is configured to output a signal corresponding to the intensity of the projection light incident on each of the detection areas, and the determination circuit removes a scattered light component included in the projection light on the basis of a difference operation of the signal output from each of the detection areas to extract only a direct light component to be included in the projection light at the time of incidence of sunlight.