公开(公告)号：US12181696B2

公开(公告)日：2024-12-31

申请号：US17193151

申请日：2021-03-05

Applicant: AGC Inc.

Inventor： Kazuhiko Shiono ,  Motoshi Nakayama ,  Tatsuo Yokote ,  Aya Ito

IPC: G02B5/20 ,  C09B57/00 ,  C09B67/20 ,  G02B1/04 ,  H01L27/146

Abstract: An optical filter includes: a resin substrate having a thickness of 20 μm or more and 110 μm or less; an absorption layer having a thickness of 0.25 μm or more and 12 μm or less and being disposed on at least one principal surface of the resin substrate; and dielectric multilayer films disposed as an outermost layer on both principal surfaces of the resin substrate. At least one of the dielectric multilayer films is a near-infrared reflection layer. The resin substrate includes a first transparent resin having a glass transition temperature of 170° C. or more and having specific optical properties. The absorption layer includes a near-infrared absorbing dye (A) and a second transparent resin having a glass transition temperature of 170° C. or more, and the near-infrared absorbing dye (A) satisfies specific optical properties in relation to the second transparent resin.