US 12,066,601 B2
Imaging lens element assembly and imaging lens assembly module
Lin-An Chang, Taichung (TW); Ming-Ta Chou, Taichung (TW); Cheng-Feng Lin, Taichung (TW); and Ming-Shun Chang, Taichung (TW)
Assigned to LARGAN PRECISION CO., LTD., Taichung (TW)
Filed by LARGAN PRECISION CO., LTD., Taichung (TW)
Filed on Mar. 5, 2021, as Appl. No. 17/192,919.
Claims priority of application No. 109114070 (TW), filed on Apr. 27, 2020.
Prior Publication US 2021/0333518 A1, Oct. 28, 2021
Int. Cl. G03B 17/12 (2021.01); G02B 13/00 (2006.01)
CPC G02B 13/0045 (2013.01) [G03B 17/12 (2013.01)] 24 Claims
OG exemplary drawing
 
1. An imaging lens element assembly, comprising:
a dual molded lens element, comprising:
a transparent portion, in order from a center to a peripheral region, comprising:
an optical effective area, wherein an optical axis of the imaging lens element assembly passes through the optical effective area; and
a transparent peripheral area surrounding the optical effective area;
a light absorbing portion surrounding the optical effective area, disposed on an object side of the transparent peripheral area, and comprising:
an object-end surface facing towards an object side of the light absorbing portion; and
an outer inclined surface extending from the object-end surface to an image side of the light absorbing portion and gradually far away from the optical axis; and
a step structure connected to a first outer diameter surface of the light absorbing portion and a second outer diameter surface of the transparent portion;
wherein a distance from the object-end surface to the step structure is Ld, a diameter of the first outer diameter surface is ψD, a diameter of a minimum opening of the light absorbing portion is ψd, and the following condition is satisfied:
0.6<Ld/((ψD−ψd)/2)<2.5.