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:
Mar. 25, 2025
Filed:
Nov. 04, 2021
Tokyo Visionary Optics Co., Ltd., Tokyo, JP;
Koki Tokuno, Tokyo, JP;
Ruidong Yang, Tokyo, JP;
TOKYO VISIONARY OPTICS Co., Ltd., Tokyo, JP;
Abstract
There is provided an imaging lens having a low profile and a low F-number and allowing satisfactory correction of aberrations. An imaging lens comprises in order from an object side, a first lens Lwith positive refractive power, a second lens Lwith negative refractive power, a third lens L, a fourth lens Lwith positive refractive power, and a fifth lens Lwith negative refractive power, wherein an image-side surface of said fourth lens Lis convex in a paraxial region, an object-side surface of said fifth lens Lis an aspheric surface having at least one inflection point, and the following conditional expressions are satisfied:/Dep<2.0 (1)1.2<3/2<1.8 (2)15<3<35 (3)−1.0<55<−0.3 (4)