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, 1976
Filed:
Apr. 23, 1975
Serge Veron, Paris, FR;
Thomson-CSF, Paris Cedex, FR;
Abstract
A pyroelectric radiation detector which is relatively immune to the effects of microphonic vibrations includes within an evacuated envelope a triglycine sulphate (TGS) target secured by silicone grease to a thin (3-6 .mu.M) mica support plate. The mica support plate is adhesively secured by means of an enamel to a titanium annulus which, in turn, is epoxied to the window of the evacuated envelope. The coefficients of expansion of the annulus and the support plate are selected such that after they are joined on to the other the support plate is stretched tightly across the annulus and therefore has a natural period substantially higher than the natural period of the annulus which supports it.