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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.:

US 11862740 B1

PDFFull Text
Date of Patent:
Jan. 02, 2024

Filed:

Dec. 15, 2022

Illuminance sensor, electronic machine and 2d image sensor

Applicant:

Rohm Co., Ltd., Kyoto, JP;

Inventor:

Yoshitsugu Uedaira, Kyoto, JP;

Assignee:

ROHM CO., LTD., Kyoto, JP;

Attorney:

HAMRE, SCHUMANN, MUELLER & LARSON, P.C.

Primary Examiner:

Herve-Louis Y Assouman

Assistant Examiner:

Christopher M Roland

Int. Cl.
CPC ...
H01L 31/0232 (2014.01); H10K 59/65 (2023.01); H10K 50/86 (2023.01); G02B 5/20 (2006.01); H01L 27/146 (2006.01); H01L 31/09 (2006.01); G02B 27/28 (2006.01); H10K 59/60 (2023.01); H01L 31/0216 (2014.01); H01L 31/101 (2006.01); G01J 1/16 (2006.01); G01J 1/04 (2006.01);
U.S. Cl.
CPC ...
H01L 31/02327 (2013.01); G01J 1/0429 (2013.01); G01J 1/1626 (2013.01); G02B 5/201 (2013.01); G02B 5/208 (2013.01); G02B 27/286 (2013.01); H01L 27/14621 (2013.01); H01L 27/14625 (2013.01); H01L 31/02162 (2013.01); H01L 31/09 (2013.01); H01L 31/101 (2013.01); H10K 50/86 (2023.02); H10K 59/60 (2023.02); H10K 59/65 (2023.02);
Abstract

In an illuminance sensor, a slow axis of a first portion comprises a relation of +45° or −45° in regard to a first polarization direction that is a polarization direction of the a linear polarization plate, a relation of a slow axis of a second portion in regard to the first polarization direction is −45° or +45° that is opposite in sign to the relation of the slow axis of the first portion in regard to the first polarization direction, and a slow axis of a second quarter-wave plate comprises a relation of +45° or −45° in regard to a second polarization direction that is a polarization direction of a second linear polarization plate, wherein the relation of the slow axis of the second quarter-wave plate in regard to the second polarization direction is the same with the relation of the slow axis of the first portion in regard to the first polarization direction.

Find Patent Forward Citations

Uedaira, Yoshitsugu. (2024). Illuminance sensor, electronic machine and 2d image sensor (U.S. Patent No. 11862740). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/11862740

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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