Invention Application
- Patent Title: OPTICAL FILTER
-
Application No.: US17663274Application Date: 2022-05-13
-
Publication No.: US20220276420A1Publication Date: 2022-09-01
- Inventor: Yuichiro ORITA , Kazuhiko SHIONO , Motoshi NAKAYAMA , Takuro SHIMADA
- Applicant: AGC Inc.
- Applicant Address: JP Tokyo
- Assignee: AGC Inc.
- Current Assignee: AGC Inc.
- Current Assignee Address: JP Tokyo
- Priority: JP2019-207414 20191115
- Main IPC: G02B5/22
- IPC: G02B5/22

Abstract:
An optical filter includes: a transparent substrate; and an absorption layer on the transparent substrate, the absorption layer containing at least one dye (X) having a maximum absorption wavelength in 600 to 1000 nm. A laminate of the transparent substrate and the absorption layer satisfies all of the following characteristics (i-2) to (i-4): (i-2) a maximum internal transmittance in 700 to 850 nm is 35% or lower; (i-3) a difference between the maximum internal transmittance and a minimum internal transmittance in 700 to 850 nm is 20% or smaller; and (i-4) OD(A) and OD(B) satisfy the following relationship: OD(A)/OD(B)
Information query