Patent ID: 11960140
Assignee: LARGAN PRECISION CO., LTD.
Field: Optics (Instruments)
Classification: CPC G | IPC G

Claim 0:
1. An imaging lens assembly module, which has an optical axis, comprising:
an optical element set, comprising:
at least one optical lens element, which is a plastic lens element, and an object side of the at least one optical lens element without additional one or more optical lens elements disposed thereon, the at least one optical lens element, in order from the optical axis to a peripheral region thereof, comprising:
an optical effective portion; and
an outer peripheral portion surrounding the optical effective portion; and

at least one light blocking sheet disposed on an object side of the outer peripheral portion of the at least one optical lens element, and spaced apart from the outer peripheral portion of the at least one optical lens element, the at least one light blocking sheet comprising:
an object-side surface;
an image-side surface; and
an inner opening surface surrounding a through hole of the at least one light blocking sheet, and the inner opening surface connected to the object-side surface and the image-side surface;

a light blocking element assembling surface disposed on an object side of the at least one light blocking sheet, and the light blocking element assembling surface facing toward an image side of the imaging lens assembly module and being surrounding the through hole of the at least one light blocking sheet and for the at least one light blocking sheet mounted thereon; and
a light absorbing layer disposed on the image-side surface of the at least one light blocking sheet and for fixing the at least one light blocking sheet on the light blocking element assembling surface;
wherein a void is maintained between the at least one light blocking sheet and the outer peripheral portion of the at least one optical lens element;
wherein a diameter of the through hole of the at least one light blocking sheet is ψsa, an outer diameter of the at least one light blocking sheet is ψsd, and the following condition is satisfied:

0.1<(ψsd−ψsa)ψsa<0.4.