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:
Jul. 10, 1979
Filed:
Dec. 08, 1977
Joseph L Sperrazza, New Haven, CT (US);
Universal Technology, Inc., Woodbridge, CT (US);
Abstract
An electro-optical gaging system which comprises a linear array of photo-sensitive diodes where the thickness of an object against a dark background is measured by determining the number of diodes which are discharged due to light incident thereon from the object. Each diode of the array is sequentially scanned during a scanning cycle to recharge the capacitance of the discharged diodes and the number of charging pulses is a measurement of the thickness of the object. A separate photo-sensitive element senses the light conditions and generates pulses which determine the repetition rate of the scanning cycle to maintain system calibration. A start scan signal is also utilized to determine that the light intensity is within predetermined limits.