Patent ID: 11924534
Assignee: LARGAN PRECISION CO., LTD.
Field: Audio-visual technology (Electrical engineering)
Classification: CPC H  G | IPC G  H

Claim 14:
15. A lens assembly, having an optical path, and the lens assembly comprising:
a reflection component, having an optical portion and a V-shaped groove, wherein the optical path passes through the optical portion, the V-shaped groove has two light-blocking surfaces and a plurality of curved protrusions, the two light-blocking surfaces are gradually spaced apart from each other from the optical portion along a direction away from the optical path, and the plurality of curved protrusions are sequentially arranged and are connected to the two light-blocking surfaces; and
a light-blocking membrane layer, coated on the plurality of curved protrusions and at least one of the two light-blocking surfaces of the V-shaped groove of the reflection component and adjacent to the optical portion, and the light-blocking membrane layer having:
a distal side; and
a proximal side, located closer to the optical portion than the distal side, and the proximal side comprising:
two extension structures, disposed at a side of the V-shaped groove close to the optical path and extending along a direction away from the distal side, wherein the two extension structures are not overlapped with each other in a direction in parallel with the optical path; and
a recessed structure, connected to the two extension structures and recessed along a direction towards the distal side;
wherein the two extension structures and the recessed structure are formed by coating the light-blocking membrane layer on the plurality of curved protrusions;

wherein a shortest distance between the two extension structures at a side farthest from the distal side is ΔG, and the following condition is satisfied:

0.1 [um]≤ΔG≤299.5 [um].