Title:
OPTICAL SYSTEM, CAMERA MODULE, AND AUTOMOBILE
Document Type and Number:
WIPO Patent Application WO/2021/051277
Kind Code:
A1
Abstract:
Provided is an optical system (100), sequentially comprising, from an object side to an image side, a first lens (L1) having negative refractive power, an object side face (S1) of the first lens (L1) being convex, and an image side face (S2) being concave; a second lens (L2) having negative refractive power, an image side face (S4) of the second lens (L2) being concave; a third lens (L3) having positive refractive power, an object side face (S5) and an image side face (S6) of the third lens (L3) each being convex; a fourth lens (L4) having positive refractive power, an object side face (S7) and an image side face (S8) of the fourth lens (L4) each being convex; a lens unit (110) having refractive power; and a stop (STO) arranged on an object side of the fourth lens (L4). The optical system (100) satisfies the condition of FOV/CRA > 10, wherein FOV is a field-of-view angle in a diagonal direction of an imaging face (S17) of the optical system (100), and CRA is an angle of incidence of chief rays.
Inventors:
ZOU HAIRONG (CN)
LE YUMING (CN)
YOO BYOUNGTAEK (CN)
LAN BINLI (CN)
LE YUMING (CN)
YOO BYOUNGTAEK (CN)
LAN BINLI (CN)
Application Number:
PCT/CN2019/106226
Publication Date:
March 25, 2021
Filing Date:
September 17, 2019
Export Citation:
Assignee:
NANCHANG OUFEI PREC OPTICAL PRODUCT CO LTD (CN)
International Classes:
G02B13/00; G02B13/06
Foreign References:
| CN108333730A | 2018-07-27 | |||
| CN204462508U | 2015-07-08 | |||
| CN109212722A | 2019-01-15 | |||
| CN109459838A | 2019-03-12 | |||
| CN209167643U | 2019-07-26 | |||
| US20130010375A1 | 2013-01-10 |
Attorney, Agent or Firm:
ADVANCE CHINA IP LAW OFFICE (CN)
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