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:
May. 26, 1981
Filed:
Feb. 21, 1979
John C Nosler, Eugene, OR (US);
Other;
Abstract
An electro-optical position-monitoring system including a tracking detector whose position is interpretable to indicate the spatial location of a monitored object. In one embodiment, the detector includes a beam-splitting prism, and in the other includes two arrays of fiber-optic elements--both arrangements being designed to divide reflected, received light into two optical paths. Interposed in these paths are photodetectors which each produce an output signal directly indicative of the intensity of light received along the associated path. Circuitry which responds to such signals effects tracking movement of the prism (or the arrays) so as to equalize signals produced by the photodetectors. When equalization occurs, tracking stops, and the repositioned location of tracked parts is directly readable as an indication of the spatial location of the monitored object.