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:
Nov. 27, 2012
Filed:
Dec. 23, 2009
Shinji Kawabata, Osaka, JP;
Shinji Kawabata, Osaka, JP;
Keyence Corporation, Osaka, JP;
Abstract
There is provided an optical scanning type photoelectric switch capable of facilitating control of holding a set detection sensitivity, wherein first and second reflection surfaces with different reflection factors are built as reference objects in the optical scanning type photoelectric switch, and arranged in a measurement invalid range in rotation of a scanning mirror, a light projection path, a light reception path, a laser light source LD and a light receiving element, which are used for scanning in the measurement area, are shared, and when a light reception intensity of the white second reflection surface is smaller than a 'reference light reception intensity (white)', a light projection driving section is controlled to increase the light projection intensity.