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:
Oct. 21, 2003
Filed:
Mar. 13, 2001
Applicant:
Inventor:
Brian D. Wichner, Otter Rock, OR (US);
Assignee:
InFocus Corporation, Wilsonville, OR (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01J 5/02 ;
U.S. Cl.
CPC ...
G01J 5/02 ;
Abstract
Infrared radiation receivers ( ) of this invention include non-imaging optical concentrators ( ) having light exit surfaces ( ); a light sensor ( ) having a light entrance surface that is separated from the light exit surface by a small air gap ( ); and a soft, pliable, light transmissive medium ( ) inserted in the gap to reduce the light transmission loss across the gap. The soft, pliable medium is held in place by either a recess ( ) in the concentrator or by a surrounding annular ring ( ).