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. 14, 2012
Filed:
Dec. 18, 2009
Kazunori Osako, Otsu, JP;
Takayoshi Takahara, Kusatsu, JP;
Kazunori Osako, Otsu, JP;
Takayoshi Takahara, Kusatsu, JP;
Omron Corporation, Kyoto, JP;
Abstract
This invention enables a worker, who performs a work for optical axis adjustment, to easily grasp whether adjustment for further increasing the light receiving quantity is possible. In a multi-optical axis photoelectronic sensor, a minimum value of the light receiving quantities obtained for every optical axis is detected every time a process of measuring, while lighting each light emitting elementby turns, the light receiving quantity of a light receiving element corresponding to a lighted light emitting elementis repeated for one cycle, and a peak value of the minimum light receiving quantities detected in the past is detected. A bar graph based on specific values of the most recent minimum light receiving quantity and the peak value, or a bar graph showing a proportion of the most recent minimum light receiving quantity with respect to the peak value is displayed using a plurality of indication lights, each arranged on the front surfaces of a light projectorand a light receiver. The bar graph changes according to the update of the peak value and the fluctuation in the value of the minimum light receiving quantity of every hour.