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:
Jan. 29, 1985
Filed:
Jan. 26, 1965
Ludwig Wesch, Glucksburg-Meierwik, DE;
Other;
Abstract
1. Apparatus for locating a target which radiates or reflects electromagnetic energy comprising a circular-scan cathode-ray tube including a screen and an electron beam moving over said screen, regions of said screen fluorescing when impinged upon by said electron beam to generate light energy, a plurality of semi-conductor elements disposed on said screen, each of said semi-conductor elements includng a layer of photoconductive material adjacent said screen and a layer of photo-dielectric material on said layer of photoconductive material and adapted to receive electromagnetic energy from said target, said photoconductive material having a low resistance only when receiving light energy, said photo-dielectric material changing electrical capacitance when receiving electromagnetic energy, means for conductively connecting together said layers of photoconductive material to provide a first terminal, an electromagnetic radiation permeable conductor disposed on all other said layers of photo-dielectric material and including a second terminal, and an oscillator means including a tuned circuit connected to said first and second terminals, said oscillator means transmitting a target indicating signal when the layer of photo-dielectric material of one of said semi-conductor elements receives electromagnetic energy simultaneously with the receipt of light energy by its associated layer of photoconductive material.