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:
Nov. 22, 2022
Filed:
Sep. 02, 2019
Convergence Technology Co., Ltd., Wuhan, CN;
Huazhong University of Science and Technology, Wuhan, CN;
Shaoqun Zeng, Wuhan, CN;
Qinglei Hu, Wuhan, CN;
Kai Huang, Wuhan, CN;
Ning Li, Wuhan, CN;
Mengting Li, Wuhan, CN;
CONVERGENCE TECHNOLOGY CO., LTD., Wuhan, CN;
HUAZHONG UNIVERSITY OF SCIENCE AND TECHNOLOGY, Wuhan, CN;
Abstract
A miniature imaging lens for close-range imaging includes: a first lens group, an aperture, and a second lens group sequentially arranged in a direction from the object side to the image side of an optical axis; the first lens group and the second lens group have positive focal power, an object-side clear aperture of the first lens group is larger than an image-side clear aperture of the first lens group, and an object-side clear aperture of the second lens group is less than an image-side clear aperture of the second lens group, and specific process parameters are provided. A sandwich structure lens configuration composed of a first lens group, an aperture and a second lens group can obtain a high close-range imaging effect under the condition of miniaturization, and can effectively reduce aberrations of close-range imaging, especially distortion and chromatic aberration.