Title:
OPTICAL SYSTEM AND CAMERA MODULE COMPRISING SAME
Document Type and Number:
WIPO Patent Application WO/2023/085868
Kind Code:
A1
Abstract:
An optical system disclosed in an embodiment of the present invention comprises first to eighth lenses arranged along an optical axis in a direction from an object side to a sensor side, wherein the first lens has positive (+) refractive power on the optical axis, and the eighth lens has negative (-) refractive power on the optical axis, the object-side surface of the first lens has a convex shape on the optical axis, the sensor-side surface of the third lens has the smallest effective diameter among the first to eighth lenses, the sensor-side surface of the eighth lens has the largest effective diameter among the first to eighth lenses, the sensor-side surface of the eighth lens is provided without a critical point from the optical axis to the end of the effective area, and a distance from the center of the sensor-side surface of the eighth lens to a first point where the slope of a straight line passing through the sensor-side surface has a gradient of less than 1% is 20% or more of the effective radius, and satisfies the equation of 0.4 < TTL / ImgH < 2.5 (where total track length (TTL) is a distance on the optical axis from the apex of the object-side surface of the first lens to the image surface of the sensor, and ImgH is 1/2 of the maximum diagonal length of the sensor).
Inventors:
SIN DOO SHIK (KR)
Application Number:
PCT/KR2022/017802
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:
| CN209690597U | 2019-11-26 | |||
| KR20180076742A | 2018-07-06 | |||
| KR20170051002A | 2017-05-11 | |||
| CN110412749A | 2019-11-05 | |||
| CN110531501A | 2019-12-03 |
Attorney, Agent or Firm:
HAW, Yong Noke (KR)
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