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:
Sep. 16, 2025
Filed:
Sep. 20, 2022
Applicant:
Tamron Co., Ltd., Saitama, JP;
Inventor:
Tomohiro Kobayashi, Saitama, JP;
Assignee:
TAMRON CO., LTD., Saitama, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G02B 15/14 (2006.01); G02B 15/20 (2006.01);
U.S. Cl.
CPC ...
G02B 15/145121 (2019.08); G02B 15/20 (2013.01);
Abstract
The optical system includes a plurality of lens groups in which an interval between adjacent lens groups changes when focusing, and an aperture stop, and when intervals between an exit pupil of an on-axis ray by the aperture stop and an image plane in an infinite-distance object focusing state, a first short-distance object focusing state in which an imaging magnification is β, and a second short-distance object focusing state in which an imaging magnification is βare Pinf, P, and P, respectively, the optical system satisfies predetermined conditions. An imaging apparatus includes the optical system and an image sensor.