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. 12, 2023
Filed:
Jun. 05, 2020
Tokyo Visionary Optics Co., Ltd., Tokyo, JP;
Hitoshi Hirano, Tokyo, JP;
TOKYO VISIONARY OPTICS CO., LTD., Tokyo, JP;
Abstract
There is provided a compact imaging lens configured to properly correct aberrations. The imaging lens includes, in order from an object side to an image side, a first lens Lwith positive refractive power, a second lens Lwith negative refractive power, a third lens Lwith positive refractive power, a fourth lens Lwith negative refractive power, a fifth lens L, a sixth lens L, a seventh lens Lwith positive refractive power, and an eighth lens Lwith negative refractive power. The fourth lens is formed in a shape of a meniscus lens having an object-side surface being concave in a paraxial region. The eighth lens Lhas an aspheric image-side surface having at least one inflection point. Furthermore, the following conditional expression is satisfied:0.04<34/<0.15wheref: a focal length of the overall optical system of the imaging lens, andD34: a distance along the optical axis between the third lens and the fourth lens.