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:
Jun. 23, 2020
Filed:
Mar. 24, 2017
Applicant:
Konica Minolta, Inc., Tokyo, JP;
Inventor:
Kentarou Nakamura, Tokyo, JP;
Assignee:
Konica Minolta, Inc., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02B 9/60 (2006.01); G02B 13/04 (2006.01); G02B 7/02 (2006.01); G02B 13/18 (2006.01); G02B 13/00 (2006.01); G02B 13/06 (2006.01);
U.S. Cl.
CPC ...
G02B 9/60 (2013.01); G02B 7/021 (2013.01); G02B 13/0045 (2013.01); G02B 13/04 (2013.01); G02B 13/06 (2013.01); G02B 13/18 (2013.01);
Abstract
A wide-angle optical system including, in order from an object side: a negative first lens that is a glass lens having a convex shape on the object side, a concave shape on an image side, and a spherical surface on either side; a negative second lens that has an aspherical surface on at least one side, and a concave shape on the image side; a positive third lens; an aperture; a fourth lens that has an aspherical surface on at least one side; and a fifth lens that has an aspherical surface on at least one side.