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:
Jul. 06, 2010
Filed:
Oct. 17, 2007
Motoharu Okuno, Ayabe, JP;
Motoharu Okuno, Ayabe, JP;
OMRON Corporation, Kyoto, JP;
Abstract
A recursive-reflective photoelectric sensor has a sensor main body and a recursive reflecting part. The sensor main body includes a light projecting part that projects first circularly polarized light and a light receiving part. When a mixture of the first circularly polarized light and second circularly polarized light which is differently polarized from the first circularly polarized light is incident to the light receiving part, only the second circularly polarized light is selectively passed. The recursive reflecting part reflects the first circularly polarized light by converting into reflected light that includes the second circularly polarized light.