Invention Grant
- Patent Title: Imaging lens
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Application No.: US17391788Application Date: 2021-08-02
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Publication No.: US11754814B2Publication Date: 2023-09-12
- Inventor: 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 17249708 2017.12.26
- Main IPC: G02B13/00
- IPC: G02B13/00 ; G02B9/60

Abstract:
There is provided an imaging lens with high-resolution which satisfies demand of the wide field of view, the low-profileness and the low F-number, and excellently corrects aberrations. An imaging lens comprises in order from an object side to an image side, a first lens having positive refractive power and a convex surface facing the object side near the optical axis, a second lens having negative refractive power near the optical axis, a third lens having the positive refractive power near the optical axis, a fourth lens, and a fifth lens having the negative refractive power and a concave surface facing the image side near the optical axis, wherein the image-side surface of said fifth lens is formed as an aspheric surface having at least one off-axial pole point, and predetermined conditional expressions are satisfied.
Public/Granted literature
- US20210364759A1 IMAGING LENS Public/Granted day:2021-11-25
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