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. 23, 2002
Filed:
Sep. 14, 1999
Applicant:
Inventor:
Wai Shing Ko, Chapel Hill, NC (US);
Assignee:
Regent Lighting Corporation, Burlington, NC (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01J 5/08 ;
U.S. Cl.
CPC ...
G01J 5/08 ;
Abstract
A lens array for directing infrared light or radiation to a passive infrared detector having at least two Fresnel lenses mounted on or incorporated into the lens array. Each of the lenses has a different infrared detection pattern and the lenses on the array are adapted to be selectively indexed so that the infrared detection pattern of the array is altered by the indexing. The indexing may be accomplished by rotating the lens array or by the linear movement of the lens array.