Patent · US Active

Imaging lens

US11092776B2 · kind B2 · utility

0Cited by

1References

16Claims

0Family size

Assignee

Kantatsu Co., Ltd · JP

Inventors

Kaoru Yamazaki · Osaka, JP
Shingo Yuza · Sukagawa, JP

Key dates

Filing date	Apr 9, 2018
Grant date	Aug 17, 2021
Priority date	—
Expiry date	May 3, 2038

Classification

Technology area (CPC G)Physics
CPC primaryG02B27/0025
WIPO fieldOptics
WIPO sectorInstruments

Abstract

There is provided an imaging lens with high-resolution which realizes the wide field of view, low-profileness, and low F-value in well balance, and proper correction of aberrations.An imaging lens comprising in order from an object side to an image side, a first lens having a convex surface facing the object side near an optical axis and negative refractive power, a second lens having negative refractive power, a third lens, a fourth lens having biconvex shape near the optical axis, and a fifth lens, wherein each lens of the first lens to the fifth lens is arranged without being cemented, and a below conditional expression (1) is satisfied: 0.50<r5/r6<12.50 (1)

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.