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. 12, 2021
Zhejiang Sunny Optics Co., Ltd., Yuyao, CN;
ZHEJIANG SUNNY OPTICS CO., LTD., Yuyao, CN;
Abstract
A zoom lens includes in order from an object side to an image side along an optical axis a first lens group having a positive refractive power, including a first lens disposed along the optical axis, and a second lens group having a negative refractive power, including a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, and a seventh lens disposed in order along the optical axis. Positions of the second lens to the seventh lens on the optical axis can be changed to achieve continuous zooming of the zoom lens. A total effective focal length ft of the zoom lens when it is in a final state and a total effective focal length fs of the zoom lens when it is in an initial state satisfy 1.3<ft/fs<1.5.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile