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:
Nov. 23, 1993
Filed:
Jul. 30, 1990
Applicant:
Inventor:
Jerry M Hill, Brentwood, TN (US);
Assignee:
FMC Corporation, Chicago, IL (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
G01B / ;
U.S. Cl.
CPC ...
356141 ; 356152 ;
Abstract
Apparatus is disclosed which includes two side-by-side planar light sensors. A light stop is spaced from one light sensor in position to stop or shade half of the light sensor surface from a projected light beam when the beam is orthogonal thereto. The other light sensor is completely exposed to the projected light beam. The one light sensor is exposed to more or less of the light beam dependent upon the beam's departure in one direction or the other from orthogonality to the plane of the one light sensor. A ratio of the output from the one light sensor to the output from the other provides beam angle information relative to the plane of the one light sensor.