Title:
OPTICAL SYSTEM AND CAMERA MODULE COMPRISING SAME
Document Type and Number:
WIPO Patent Application WO/2023/085870
Kind Code:
A1
Abstract:
An optical system disclosed in an embodiment comprises first to seventh lenses arranged along an optical axis in a direction from an object side to a sensor side, the first lens has positive (+) refractive power on the optical axis, the seventh lens has negative (-) refractive power on the optical axis, an object-side surface of the first lens has a convex shape in the optical axis, a sensor-side surface of a third lens has the smallest effective diameter among the first to seventh lenses, and a sensor-side surface of the seventh lens has the largest effective diameter among the first to seventh lenses, and may satisfy 0.4 < TTL/ImgH < 3 and 1 < CA_Max/CA_min < 5. (Total track length (TTL) is the distance on the optical axis from the apex of the object-side surface of the first lens to the top surface of a sensor, ImgH is 1/2 of the maximum diagonal length of the sensor, CA_Max is the largest effective diameter from among the effective diameters of the object-side surfaces and the sensor-side surfaces of the first to seventh lenses, and CA_Min is the smallest effective diameter from among the effective diameters of the object-side surfaces and the sensor-side surfaces of the first to seventh lenses.)
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Inventors:
SIN DOO SHIK (KR)
Application Number:
PCT/KR2022/017805
Publication Date:
May 19, 2023
Filing Date:
November 11, 2022
Export Citation:
Assignee:
LG INNOTEK CO LTD (KR)
International Classes:
G02B13/00; G02B3/00; G02B9/64; G02B15/14; G03B17/12; H04N23/00
Foreign References:
| JP2015072402A | 2015-04-16 | |||
| US20200174228A1 | 2020-06-04 | |||
| JP2000028919A | 2000-01-28 | |||
| CN107436481A | 2017-12-05 | |||
| CN112578534A | 2021-03-30 |
Attorney, Agent or Firm:
HAW, Yong Noke (KR)
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