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. 06, 2009
Filed:
Sep. 01, 2006
Applicant:
Richard N. Claytor, Arlington, TX (US);
Inventor:
Richard N. Claytor, Arlington, TX (US);
Assignee:
Fresnel Technologies, Inc., Ft. Worth, TX (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
G02B 3/08 (2006.01); G02B 13/14 (2006.01);
U.S. Cl.
CPC ...
Abstract
An infrared imaging device is provided which comprises first and second plastic Fresnel lenses that are in optical communication with each other. Each of the first and second lenses have a first major surface which is convex and a second major surface which comprises a Fresnel surface. The first lens is adapted to mimic a meniscus asphere correct for conjugates of infinity and for the focal length of said first lens, and the second lens is adapted to mimic a meniscus asphere and is further adapted to act as a field flattener.