Illuminance sensor, electronic machine and 2D image sensor

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United States of America Patent

PATENT NO 11862740
APP PUB NO 20230122157A1
SERIAL NO

18066823

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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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.

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Patent Owner(s)

Patent OwnerAddress
ROHM CO LTDKYOTO-SHI KYOTO 615-8585

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Uedaira, Yoshitsugu Kyoto, JP 29 193

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