公开(公告)号：US20220011484A1

公开(公告)日：2022-01-13

申请号：US17448562

申请日：2021-09-23

Applicant: AGC Inc.

Inventor： Kazuhiko SHIONO ,  Motoshi NAKAYAMA ,  Sayuri YAMADA ,  Takuro SHIMADA ,  Masumi MIYAZAKI ,  Aya ITO ,  Tatsuo YOKOTE

IPC: G02B5/20 ,  C09B57/00

Abstract: An optical filter includes: a resin substrate including a resin (P) which has a glass transition temperature of 200° C. or higher and which has specific transmittance properties; an external resin layer; and dielectric multilayer films. In a case where the external resin layer includes the polyimide resin, the optical filter includes an intermediate resin layer including a cycloolefin resin. At least one of the dielectric multilayer films is a near-infrared reflection layer. At least one of the external resin layer and the intermediate resin layer contains a near-infrared absorbing dye (A). The near-infrared absorbing dye (A) has a maximum absorption wavelength within a wavelength range of 800 nm to 1,200 nm. The proportion of a total thickness of members including a resin having a glass transition temperature of 200° C. or higher to a total thickness of the resin-including members is 85% or higher.

公开(公告)号：US20210191012A1

公开(公告)日：2021-06-24

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 ,  G02B1/04 ,  C09B57/00 ,  C09B67/20 ,  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.