Title:
OPTICAL SYSTEM AND CAMERA MODULE COMPRISING SAME
Document Type and Number:
WIPO Patent Application WO/2023/224415
Kind Code:
A1
Abstract:
An optical system disclosed in an embodiment of the invention comprises first to eighth lenses disposed along the optical axis in the direction from an object side to a sensor side, wherein the first lens has positive (+) or negative (-) refractive power at the optical axis, the second lens has positive (+) refractive power at the optical axis, the third lens has negative (-) refractive power at the optical axis, the seventh lens has positive (+) refractive power at the optical axis, the eighth lens has negative (-) refractive power at the optical axis, at least one of an object side surface and a sensor side surface of the seventh lens has at least one critical point, each of an object side surface and a sensor side surface of the eighth lens has a critical point, at least one of the object side surface and the sensor side surface of the eighth lens has a free-form shape in which a lens surface orthogonal to the optical axis in a first direction and a lens surface orthogonal to the optical axis in a second direction are asymmetric, and the free-form surface may have lens surfaces having a symmetrical shape on both sides of the first direction with respect to the optical axis, and lens surfaces having a symmetrical shape on both sides of the second direction with respect to the optical axis.
Inventors:
KWON DUK KEUN (KR)
Application Number:
PCT/KR2023/006801
Publication Date:
November 23, 2023
Filing Date:
May 18, 2023
Export Citation:
Assignee:
LG INNOTEK CO LTD (KR)
International Classes:
G02B13/00; G02B9/64; G02B13/18; G03B17/12; H04N23/55
Foreign References:
| CN109581631A | 2019-04-05 | |||
| CN112748547A | 2021-05-04 | |||
| JP2017049347A | 2017-03-09 | |||
| CN110824664A | 2020-02-21 | |||
| US20220026674A1 | 2022-01-27 |
Attorney, Agent or Firm:
HAW, Yong Noke (KR)
Download PDF: