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:
Aug. 03, 1993
Filed:
Dec. 03, 1991
Shiro Ogata, Kyoto, JP;
Omron Corporation, Kyoto, JP;
Abstract
The invention provides a thin-profile displacement signal output device. The device comprises a first member having a periodic pattern consisting of alternating high-transmittance and low-transmittance regions, a second member having a periodic pattern consisting of alternating high-reflectance regions, a light emitting source for emitting a detection light beam and a light-receiver for receiving the reflected light, the first member and second member facing each other and spaced apart by a distance which is smaller than the pitch of the periodic pattern, the light-emitting source and light receiver means being both disposed on one side of said first member which is opposite to the side on which said second member is disposed, and the first and second member being displaceable relative to each other.