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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 9933306 B1

PDFFull Text
Date of Patent:
Apr. 03, 2018

Filed:

Sep. 07, 2016

Photoelectric switch having a controller for controlling a light projecting amount and generating a detection signal representing a workpiece determination

Applicant:

Keyence Corporation, Osaka, JP;

Inventors:

Shinichi Tsukigi, Osaka, JP;

Sohei Kanoda, Osaka, JP;

Yu Babasaki, Osaka, JP;

Assignee:

Keyence Corporation, Osaka, JP;

Attorney:

Kilyk & Bowersox, P.L.L.C.

Primary Examiner:

Que T Le

Int. Cl.
CPC ...
G01J 3/02 (2006.01); G01J 3/28 (2006.01); G01V 8/12 (2006.01); G01J 3/51 (2006.01); B23K 26/03 (2006.01); G01J 3/36 (2006.01); G01N 21/31 (2006.01); G05B 19/401 (2006.01); G05B 19/404 (2006.01); G01N 21/25 (2006.01); G01J 3/12 (2006.01); G01J 3/46 (2006.01);
U.S. Cl.
CPC ...
G01J 3/0275 (2013.01); B23K 26/032 (2013.01); G01J 3/0208 (2013.01); G01J 3/0237 (2013.01); G01J 3/0262 (2013.01); G01J 3/0286 (2013.01); G01J 3/0289 (2013.01); G01J 3/28 (2013.01); G01J 3/36 (2013.01); G01J 3/513 (2013.01); G01N 21/251 (2013.01); G01N 21/31 (2013.01); G01V 8/12 (2013.01); G05B 19/401 (2013.01); G05B 19/404 (2013.01); G01J 2003/1213 (2013.01); G01J 2003/2833 (2013.01); G01J 2003/466 (2013.01); G01N 2201/062 (2013.01);
Abstract

There is provided a photoelectric switch capable of reducing a size of a whole device while suppressing light amount irregularity and color irregularity of detected light. The photoelectric switch includes: a surface mount LED, configured to generate a light containing a plurality of color components with different hues; an optical shield disposed between the surface mount LED and a light projecting lens to shield the light around an optical opening passing the light from the surface mount LED to the light projecting lens; a light receiving element configured to selectively receive the light to generate a plurality of light reception signals; a controller configured to control a light projecting amount of the surface mount LED based on the light reception signal.

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