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. 19, 2023
Filed:
Dec. 25, 2020
Zhejiang Sunny Optics Co.,ltd., Zhejiang, CN;
ZHEJIANG SUNNY OPTICS CO., LTD., Ningbo, CN;
Abstract
The disclosure provides a zoom lens group, which sequentially includes, from an object side to an image side along an optical axis: a first lens group with negative refractive power, including a first lens and a second lens, wherein the first lens has negative refractive power, and an object-side surface thereof is a concave surface; a second lens group with positive refractive power; a third lens group with positive refractive power; and a fourth lens group with negative refractive power. A spacing distance of the first lens group and the second lens group on an optical axis, a spacing distance of the second lens group and the third lens group on the optical axis and a spacing distance of the third lens group and the fourth lens group on the optical axis are changed to switch the zoom lens group from a telephoto state to a wide-angle state.