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:
Apr. 19, 1994
Filed:
Sep. 15, 1992
Kenneth A Wickersheim, Menlo Park, CA (US);
Luxtron Corporation, Santa Clara, CA (US);
Abstract
A video camera of a type using an array of charge coupled devices (CCDs) is utilized to measure a condition, such as temperature, by imaging onto the camera a luminescent signal which contains information of the signal's decay time. The luminescent decay time is measured by comparing, such as by ratioing, the integrated signal values obtained in successive frames of operation of the CCD. One application includes use to measure a two-dimensional temperature distribution across a surface. The surface of interest is either coated with a layer of the luminescent material or emissions from the surface are imaged onto a separate luminescent screen. Another application is as a multiplexer and detector system for a large array of optical fiber sensors, a luminescent signal from each of the sensors being imaged through its respective fiber onto a unique one or more of CCD photosites.