Invention Grant
- Patent Title: Imaging lens
-
Application No.: US16895584Application Date: 2020-06-08
-
Publication No.: US11668901B2Publication Date: 2023-06-06
- Inventor: Koji Nitta , Yukio Sekine , Masaya Hashimoto
- Applicant: TOKYO VISIONARY OPTICS CO., LTD.
- Applicant Address: JP Tokyo
- Assignee: TOKYO VISIONARY OPTICS CO., LTD
- Current Assignee: TOKYO VISIONARY OPTICS CO., LTD
- Current Assignee Address: JP Tokyo
- Agency: Hamre, Schumann, Mueller & Larson, P.C.
- Priority: JP 2017106027 2017.05.29
- Main IPC: G02B9/62
- IPC: G02B9/62 ; G02B9/60 ; G02B13/00 ; H04N23/55 ; G02B5/00 ; G02B3/04 ; G02B13/18

Abstract:
There is provided an imaging lens with high resolution which satisfies in well balance the low-profileness and the low F-number and properly corrects aberrations.
An imaging lens comprises a first lens having positive refractive power, a second lens having the positive refractive power, a third lens, a fourth lens, a fifth lens being a double-sided aspheric lens, and a sixth lens being double-sided aspheric lens and having a concave surface facing the image side near the optical axis, wherein the image-side surface of the sixth lens is an aspheric surface changing to the convex surface at a peripheral area.
An imaging lens comprises a first lens having positive refractive power, a second lens having the positive refractive power, a third lens, a fourth lens, a fifth lens being a double-sided aspheric lens, and a sixth lens being double-sided aspheric lens and having a concave surface facing the image side near the optical axis, wherein the image-side surface of the sixth lens is an aspheric surface changing to the convex surface at a peripheral area.
Public/Granted literature
- US20200301103A1 IMAGING LENS Public/Granted day:2020-09-24
Information query