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:
Nov. 15, 2016
Filed:
Feb. 20, 2014
Applicant:
Duke University, Durham, NC (US);
Inventors:
Daniel Marks, Durham, NC (US);
David Jones Brady, Durham, NC (US);
Assignee:
Duke University, Durham, NC (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04N 5/225 (2006.01); G02B 13/06 (2006.01); H04N 5/232 (2006.01); H04N 5/262 (2006.01); G02B 27/00 (2006.01);
U.S. Cl.
CPC ...
G02B 13/06 (2013.01); G02B 27/0037 (2013.01); H04N 5/2254 (2013.01); H04N 5/23232 (2013.01); H04N 5/2624 (2013.01);
Abstract
Optical systems based on an objective lens comprising one or more plastic lens elements are disclosed. The inclusion of plastic lens element reduces one or more of system cost, size, weight, and/or complexity. The chromatic performance of some imaging systems in accordance with the present invention is improved by incorporation of a diffractive surface into the entry surface of the objective lens.