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

Claim 0:
1. A lens assembly, having an optical path, and the lens assembly comprising:
a lens element, having an optical portion, wherein the optical path passes through the optical portion; and
a light-blocking membrane layer, coated on the lens element 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, 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 a shortest distance between the two extension structures at a side farthest from the distal side is ΔG, a longest distance in parallel with the optical path between the two extension structures and the recessed structure is ΔH, and the following conditions are satisfied:

0.1 [um]≤ΔG≤299.5 [um]; and

0.5 [um]≤ΔH≤249.5 [um].