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. 17, 2017
Filed:
Nov. 17, 2015
Olympus Corporation, Tokyo, JP;
Masaru Morooka, Akishima, JP;
OLYMPUS CORPORATION, Tokyo, JP;
Abstract
This disclosure is directed to an inner focus macrolens. The inner focus macrolens can include sequentially from an object side, a first lens unit, an aperture stop, a second lens unit having a positive refractive power, a third lens unit having a negative refractive power and a fourth lens unit having a positive refractive power, wherein the first lens unit comprises a negative lens as the closest powered lens to the object side and a positive lens, the second lens unit comprises an object side negative lens as the closest powered lens to the object side and a positive lens, the third lens unit comprises a negative lens, and the fourth lens unit comprises a positive lens.