公开(公告)号：US20230066022A1

公开(公告)日：2023-03-02

申请号：US17894204

申请日：2022-08-24

Applicant: PLATINUM OPTICS TECHNOLOGY INC.

Inventor： Chung-Han Lu ,  Che-Yu Chen ,  Ming-Jui Yang

IPC: G02B5/20 ,  G02B27/00 ,  C03C4/08 ,  C03C3/062

Abstract: A near-infrared absorbing glass is provided and includes 10% to 40% by weight of phosphorus and 5% to 35% by weight of iron, where a molar ratio of phosphorus to iron (P/Fe) of the near-infrared absorbing glass is between 1.75 and 5, and the near-infrared absorbing glass has an average transmittance of less than 10% to light with wavelengths ranging from 930 nm to 950 nm. A near-infrared cut-off filter including the near-infrared absorbing glass is also provided.