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. 10, 2025
Filed:
May. 26, 2023
Panasonic Intellectual Property Management Co., Ltd., Osaka, JP;
Genki Nakazawa, Osaka, JP;
Abstract
An imaging optical system consists of a first lens group having positive power, a second lens group having power; and a third lens group having power. The first lens group and the third lens group are immobile along an optical axis and the second lens group moves along the optical axis while the imaging optical system is focusing. The first lens group consists of: a sub-lens group G1A; an aperture stop; and a sub-lens group G1B. The sub-lens group G1A includes: a meniscus lens L1A1 having positive power and having a convex surface facing the object; a meniscus lens L1A2 having negative power and having a convex surface facing the object; and a meniscus lens L1A3 having negative power and having a convex surface facing the object.