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:
Feb. 27, 1990
Filed:
May. 04, 1988
William B Spillman Jr, Charlotte, VT (US);
Robert E Rudd III, Middlebury, VT (US);
Frederick G Hoff, Bristol, VT (US);
Simmonds Precision Products, Inc., Wilmington, DE (US);
Abstract
A sensor testing apparatus which is capable of testing any sensor regardless of the type of polarization the sensor is sensitive to. The testing apparatus comprises a source conditioning apparatus to produce a beam of optical energy of a known polarization state. A polarization conditioning apparatus changes the polarization state of the optical energy beam to any desired polarization state. A transmit quadrant detector detects the polarization of the optical energy and the optical energy is directed to a sensor to be tested. The optical energy transmitted by the sensor is detected by a receive quadrant detector. The polarization state is displayed on the monitor of a computer by virtue of a computer interface with both quadrant detectors.