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:
Jun. 26, 2018
Filed:
Feb. 24, 2015
Applicant:
Sharp Kabushiki Kaisha, Osaka, JP;
Inventors:
Assignee:
SHARP KABUSHIKI KAISHA, Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01L 27/14 (2006.01); G01J 1/04 (2006.01); G01J 1/42 (2006.01); G01J 1/44 (2006.01); H01L 27/146 (2006.01); H01L 31/0216 (2014.01); H01L 31/101 (2006.01);
U.S. Cl.
CPC ...
G01J 1/0407 (2013.01); G01J 1/429 (2013.01); G01J 1/44 (2013.01); H01L 27/14621 (2013.01); H01L 27/14623 (2013.01); H01L 27/14647 (2013.01); H01L 31/02162 (2013.01); H01L 31/1013 (2013.01); G01J 2001/446 (2013.01);
Abstract
A light receiver capable of detecting the intensity of light in a certain wavelength range is provided. The light receiver includes a first light receiving element (PD) and a second light receiving element (PD) that have an identical spectral sensitivity characteristic, and a UV cut filter (). Light that has passed through the UV cut filter () enters the first light receiving element (PD). A subtractor is provided that calculates a difference between a photocurrent of the first light receiving element (PD) and a photocurrent of the second light receiving element (PD).