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:
Jan. 20, 1987
Filed:
Dec. 20, 1983
Applicant:
Inventors:
Fumiaki Itsuki, Nagaokakyo, JP;
Seiji Oku, Osaka, JP;
Assignee:
Omron Tateisi Electronics Co., Kyoto, JP;
Primary Examiner:
Int. Cl.
CPC ...
H01J / ;
U.S. Cl.
CPC ...
250227 ; 250239 ;
Abstract
A reflection-type photoelectric switching apparatus comprising a lamp for projecting light rays to an object, a photoelectric element for receiving reflected light rays from the object, a reference photoelectric element mounted on a board in side-by-side relation with the photoelectric element, a light conducting means for guiding a part of said light rays from the lamp to the reference photoelectric element, and an adjusting means for adjusting the quantity of light rays guided by the light conducting means to be balanced with that of the reflected light rays received by the photoelectric element.