公开(公告)号：US11327299B2

公开(公告)日：2022-05-10

申请号：US16529916

申请日：2019-08-02

Applicant: PLATINUM OPTICS TECHNOLOGY INC.

Inventor： Yuan-Chang Lai ,  Guan-Cheng Lin ,  Chia-Fu Liu

IPC: G02B1/115 ,  G02B27/00 ,  G02B5/00

Abstract: A light shielding sheet for a lens is provided, including: a metal substrate, including: a first surface; a second surface opposing the first surface; a first through light hole being in communication with the first surface and having hole radiuses gradually decreasing in a direction from the first surface to the second surface, a ratio of a depth of the first through light hole to a difference between two of the hole radiuses at two ends of the first through light hole being less than or equal to 0.5; and a second through light hole being in communication with the first through light hole and the second surface; and a light extinction film covering the first surface, the second surface, a hole wall of the first through light hole and a portion of a hole wall of the second through light hole of the metal substrate.