Title:
OPTICAL MODULE
Document Type and Number:
WIPO Patent Application WO/2023/027551
Kind Code:
A1
Abstract:
An optical module according to an embodiment comprises: a sensor; and an optical system including a first lens, a second lens, a third lens, a fourth lens, a fifth lens, and a sixth lens sequentially arranged along an optical axis from the object side to the sensor side, wherein at least one of the object side surface and the sensor side surface of the fifth lens includes a free curved surface, and the fifth lens satisfies mathematical expression A below, [mathematical expression A] |max Sag_O_x_5 | ≠ |max Sag_O_y_5| (In mathematical expression A, max |Sag_O_x_6| indicates the absolute value of the maximum sag value on the object side surface of the fifth lens in the X-axis direction, and max |Sag_O_y_6| indicates the absolute value of the maximum sag value of the object side surface of the fifth lens in the Y-axis direction.) The optical system satisfies mathematical expressions 1 to 3 below. [mathematical expression 1] 60 ° ≤ FOV ≤ 90 ° (In mathematical expression 1, FOV indicates the angle of view.) [mathematical expression 2] 0.50 ≤ TTL / ImgH ≤ 1.0 (In mathematical expression 2, TTL indicates the distance in the optical axis direction from the apex of the object side surface of the first lens to the upper surface of an image sensor unit, and ImgH indicates twice the diagonal distance from the upper surface of the image sensor unit, which overlaps the optical axis, to the 1.0 field area of the image sensor.) [mathematical expression 3] CA_O_x < CA_O_5 (In mathematical expression 3, CA_O_x indicates the size of the effective diameter on the object side surface of a lens closest to the aperture among the lenses between the aperture and the sensor, and CA_O_5 indicates the size of the effective diameter on the object side surface of the fifth lens.)
Inventors:
JUNG JAE WOOK (KR)
Application Number:
PCT/KR2022/012822
Publication Date:
March 02, 2023
Filing Date:
August 26, 2022
Export Citation:
Assignee:
LG INNOTEK CO LTD (KR)
International Classes:
G02B13/00; G02B3/00; G02B9/62
Foreign References:
| US20210263265A1 | 2021-08-26 | |||
| US20210263281A1 | 2021-08-26 | |||
| JP2010204241A | 2010-09-16 | |||
| KR20210027183A | 2021-03-10 | |||
| KR100730852B1 | 2007-06-20 |
Attorney, Agent or Firm:
HAW, Yong Noke (KR)
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