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. 31, 2023
Filed:
May. 01, 2020
Applicant:
Lightpath Technologies, Inc., Orlando, FL (US);
Inventors:
Fujian Ding, Monroe, NY (US);
Mark Lifshotz, Oradell, NJ (US);
Assignee:
LIGHTPATH TECHNOLOGIES, INC., Orlando, FL (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G02B 3/00 (2006.01); G02B 13/14 (2006.01); G02B 13/16 (2006.01); G02B 27/00 (2006.01); G02B 27/42 (2006.01); G02B 1/00 (2006.01); G02B 5/18 (2006.01); G02B 3/04 (2006.01);
U.S. Cl.
CPC ...
G02B 3/0062 (2013.01); G02B 1/00 (2013.01); G02B 3/04 (2013.01); G02B 5/1814 (2013.01); G02B 5/1876 (2013.01); G02B 13/14 (2013.01); G02B 13/16 (2013.01); G02B 27/0025 (2013.01); G02B 27/0037 (2013.01); G02B 27/4216 (2013.01);
Abstract
A lens system for infrared (IR) imaging, including a molded first lens element and an aberration correction second lens element. The first lens element is made of chalcogenide glass and has a first and second surface, one of the first and second surfaces of the first lens element being a diffractive surface. The second lens element has a first and second surface, one of the first and second surfaces being a planar surface and neither of the first and second surfaces being a diffractive surface. The second lens element is of a different material than the second lens element.