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.

Date of Patent:
Mar. 13, 2018

Filed:

Oct. 30, 2015
Applicant:

Avago Technologies General Ip (Singapore) Pte. Ltd., Singapore, SG;

Inventors:

Wee Sin Tan, Singapore, SG;

John Lim, Singapore, SG;

Hui Ling Neo, Singapore, SG;

Serene Chan, Singapore, SG;

Saravanan Rani Ramamoorthy, Singapore, SG;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01N 21/21 (2006.01); H03K 17/94 (2006.01); G06F 3/042 (2006.01);
U.S. Cl.
CPC ...
H03K 17/943 (2013.01); G06F 3/0421 (2013.01); H03K 2217/94108 (2013.01); H03K 2217/94112 (2013.01);
Abstract

An optical sensor, optical system, and proximity sensor are disclosed. An illustrative proximity sensor is disclosed to include a light source, a photodetector including a photo-sensitive area that receives incident light and converts the received incident light into an electrical signal, and a plurality of polarization layers stacked on the photodetector that limit light from becoming received incident light for the photo-sensitive area to light traveling toward the photodetector along a predetermined path.


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