US 12,332,495 B2
Imaging lens module and electronic device
Chien-Hsun Wu, Taichung (TW); Lin-An Chang, Taichung (TW); and Ming-Ta Chou, Taichung (TW)
Assigned to LARGAN PRECISION CO., LTD., Taichung (TW)
Filed by LARGAN PRECISION CO., LTD., Taichung (TW)
Filed on Dec. 13, 2023, as Appl. No. 18/537,938.
Application 18/537,938 is a continuation of application No. 17/934,614, filed on Sep. 23, 2022, granted, now 11,886,033.
Application 17/934,614 is a continuation of application No. 16/780,967, filed on Feb. 4, 2020, granted, now 11,500,173, issued on Nov. 15, 2022.
Claims priority of application No. 108111396 (TW), filed on Mar. 29, 2019.
Prior Publication US 2024/0111121 A1, Apr. 4, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. G02B 7/02 (2021.01); G03B 17/12 (2021.01)
CPC G02B 7/022 (2013.01) [G02B 7/021 (2013.01); G03B 17/12 (2013.01)] 13 Claims
OG exemplary drawing
 
1. An imaging lens module, which has an optical axis, comprising:
a plastic lens barrel having an object-side hole facing towards an object side and an image-side hole facing towards an image side, and comprising:
a protrusion portion extending towards the optical axis along a direction perpendicular to the optical axis;
a first inner annular surface connected to an object side of the protrusion portion and the object-side hole, and forming a first receiving space; and
a second inner annular surface connected to an image side of the protrusion portion and the image-side hole, and forming a second receiving space;
a first optical element assembly disposed in the first receiving space, and comprising:
a plurality of optical lens elements; and
a second optical element assembly disposed in the second receiving space, and comprising:
a first light blocking member;
wherein the protrusion portion is an annular-shaped which surrounds the optical axis and forms a central hole, the central hole is located between the first receiving space and the second receiving space;
wherein a maximum outer diameter of each of the optical lens elements is larger than a minimum inner diameter of the central hole, and all of the optical lens elements which are received in the plastic lens barrel are located on an object side of the central hole;
wherein a minimum inner diameter of the first light blocking member is smaller than the minimum inner diameter of the central hole;
wherein a length of the first inner annular surface along the optical axis is L1, a length of the second inner annular surface along the optical axis is L2, and the following condition is satisfied:
0.05<L2/L1<0.50.