公开(公告)号：US20250116803A1

公开(公告)日：2025-04-10

申请号：US18982967

申请日：2024-12-16

Applicant: AGC Inc.

Inventor： Kazuhiko SHIONO ,  Yayoi YAMAMORI ,  Takahiro SAKAGAMI ,  Takashi NAGATA ,  Katsushi KAMIJYO

IPC: G02B5/22 ,  G02B1/02 ,  G02B1/115

Abstract: An optical filter includes a glass substrate having a first main surface, a second main surface opposite the first main surface, and an end surface connecting the first and second main surfaces, the glass substrate being a phosphate glass containing an absorbent, and a first antireflection layer disposed directly or indirectly on the first main surface of the glass substrate, wherein the first main surface of the glass substrate is coated with a first inorganic film, and a second inorganic film is provided directly or indirectly on the second main surface of the glass substrate, with the end surface being coated with a third inorganic film, and wherein the first inorganic film is a film that is closest to the glass substrate among films constituting the first antireflection layer, or a film that is different from a film composed of a plurality of films constituting the first antireflection layer.

公开(公告)号：US20220179141A1

公开(公告)日：2022-06-09

申请号：US17651911

申请日：2022-02-22

Applicant: AGC Inc.

Inventor： Kazuhiko SHIONO ,  Sayuri YAMADA ,  Yayoi YAMAMORI

IPC: G02B5/22 ,  C09B57/00 ,  G02B5/00

Abstract: The present invention relates to an optical filter including an absorption layer containing a near-infrared absorbing dye and a resin, in which the near-infrared absorbing dye contains a squarylium dye having a maximum absorption wavelength in 650 to 780 nm and a thermal decomposition temperature of 265° C. or higher and satisfying IR20−IR80