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:
Mar. 17, 2020
Filed:
Dec. 13, 2016
Applicant:
Rohm Co., Ltd., Kyoto-shi, Kyoto, JP;
Inventors:
Hideyuki Utsumi, Kyoto, JP;
Yuki Tanuma, Kyoto, JP;
Assignee:
ROHM CO., LTD., Kyoto, JP;
Primary Examiner:
Int. Cl.
CPC ...
H01L 31/173 (2006.01); G01V 8/12 (2006.01); G01J 1/04 (2006.01); H01L 31/0203 (2014.01); H01L 31/0232 (2014.01); H01L 33/58 (2010.01);
U.S. Cl.
CPC ...
H01L 31/173 (2013.01); G01J 1/0437 (2013.01); G01V 8/12 (2013.01); H01L 31/0203 (2013.01); H01L 31/02327 (2013.01); H01L 33/58 (2013.01);
Abstract
An optical device includes a light-emitting unit and a light-receiving unit. The light-emitting unit emits light forward in a first direction. The light-emitting unit has a light-emitting-side through hole that causes light traveling backward in the first direction to pass through. The light-receiving unit is arranged backward in the first direction relative to the light-emitting unit. The light-receiving unit has a light receiver that receives light after the light has passed through the light-emitting-side through hole.