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:
Mar. 21, 1978
Filed:
Jan. 28, 1977
Applicant:
Inventors:
Howard Joseph Guggenheim, Bridgewater, NJ (US);
Henry Miles O'Bryan, Jr, Plainfield, NJ (US);
LeGrand Gerard Van Uitert, Morris Township, Morris County, NJ (US);
Assignee:
Bell Telephone Laboratories, Incorporated, Murray Hill, NJ (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01J / ; G02B / ;
U.S. Cl.
CPC ...
250338 ; 250504 ; 350-11 ;
Abstract
Infrared detection and transmission apparatus are disclosed which incorporate an infrared transparent window consisting essentially of thorium fluoride. Due to high resistance to thermal shock, thorium fluoride window material may be used to advantage under extreme atmospheric conditions or for the transmission of infrared radiation at high power levels.