Title:
OPTICAL SYSTEM, AND OPTICAL MODULE AND CAMERA MODULE COMPRISING SAME
Document Type and Number:
WIPO Patent Application WO/2023/121204
Kind Code:
A1
Abstract:
An optical system according to an embodiment comprises a first lens group, a second lens group, and a third lens group which are sequentially arranged along an optical axis toward a sensor side from an object side and which each include at least one lens, wherein: the first lens group includes a first lens, a second lens, and a third lens sequentially arranged along the optical axis toward the sensor side from the object side; the second lens group includes a fourth lens and a fifth sequentially arranged along the optical axis toward the sensor side from the object side; the third lens group includes a sixth lens, a seventh lens, and an eighth lens sequentially arranged along the optical axis toward the sensor side from the object side; the second lens group and the third lens group can move (first mode) toward the sensor side, and can move (third mode) toward the object side; the third lens has negative (-) refractive power, the fourth lens has positive (+) refractive power, and the fifth lens has negative (-) refractive power; the third lens and the fourth lens include glass; and the optical system satisfies the mathematical formula. [Mathematical formula] 13 < EFL < 29 (EFL in the mathematical formula means an effective focal length (mm) of the optical system.)
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| WO/2010/001943 | LENS SYSTEM AND OPTICAL DEVICE |
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Inventors:
SIN DOO SHIK (KR)
SHIM JU YONG (KR)
SHIM JU YONG (KR)
Application Number:
PCT/KR2022/020794
Publication Date:
June 29, 2023
Filing Date:
December 20, 2022
Export Citation:
Assignee:
LG INNOTEK CO LTD (KR)
International Classes:
G02B13/00; G02B9/64; G02B13/18; G02B15/14; G03B17/12; H04N23/00
Foreign References:
| JP2019139173A | 2019-08-22 | |||
| JP2005078038A | 2005-03-24 | |||
| KR20150070876A | 2015-06-25 | |||
| KR20210060316A | 2021-05-26 | |||
| JP2018025579A | 2018-02-15 |
Attorney, Agent or Firm:
HAW, Yong Noke (KR)
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