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. 02, 2025
Filed:
May. 18, 2022
Largan Precision Co., Ltd., Taichung, TW;
Chun-Yen Chen, Taichung, TW;
Meng-Kuan Cho, Taichung, TW;
LARGAN PRECISION CO., LTD., Taichung, TW;
Abstract
An imaging optical lens system includes seven lens elements which are, in order from an object side to an image side along an optical path: a first lens element, a second lens element, a third lens element, a fourth lens element, a fifth lens element, a sixth lens element and a seventh lens element. Each of the seven lens elements has an object-side surface facing toward the object side and an image-side surface facing toward the image side. The second lens element with negative refractive power has the object-side surface being concave in a paraxial region thereof, and at least one lens surface of the second lens element is aspheric. The image-side surface of the sixth lens element is concave in a paraxial region thereof. The imaging optical lens system further includes an aperture stop located between the second lens element and the third lens element.