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:
May. 26, 2020
Filed:
Jul. 03, 2018
Olympus Corporation, Hachioji-shi, Tokyo, JP;
Keisuke Ichikawa, Tama, JP;
Shinichi Mihara, Tama, JP;
OLYMPUS CORPORATION, Tokyo, JP;
Abstract
A single-focus optical system includes a first lens unit having a positive refractive power, a second lens unit having a negative refractive power, and a third lens unit having a positive refractive power. The first lens unit includes either a first sub unit, a second sub unit, and a third sub unit, or one positive lens component in addition to the first sub unit, the second sub unit, and the third sub unit. The first sub-unit includes one negative lens component or a plurality of negative lens components, the second sub-unit includes two meniscus lens components, and the third sub-unit includes a plurality of positive lens components. The third lens unit includes a front side sub-unit and a rear side sub-unit. The front side sub-unit includes only a positive lens component.