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:
Feb. 05, 2008
Filed:
Sep. 28, 2005
Kazunori Osako, Fukuchiyama, JP;
Tetsuya Akagi, Fukuchiyama, JP;
Taku Yamamoto, Fukuchiyama, JP;
Omron Corporation, Kyoto-Shi, JP;
Abstract
The present invention provides a multiple-optical-axis photoelectric sensor in which an error in detection of an object caused by disturbance light is prevented easily and efficiently by adjusting a light projection/reception cycle in accordance with a state where mutual interference is recognized. In the invention, by detecting a range in which mutual interference occurs, that is, the position in which disturbance light is detected, which is either a first-half period or a latter-half period of a whole light projecting/receiving operation period, whether the phase is advanced or delayed is determined. For a period according to the position of the optical axis in which incidence of disturbance light is recognized or the number of optical axes in which incidence of disturbance light is recognized continuously, a scheduled next sync timing is changed.