Title:
光学フィルタおよび撮像装置
Document Type and Number:
Japanese Patent JP7342944
Kind Code:
B2
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.
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Inventors:
Kazuhiko Shiono
Motoshi Nakayama
Sayuri Yamada
Takuro Shimada
Masumi Miyazaki
Fumi Ito
Tatsuro Yokote
Motoshi Nakayama
Sayuri Yamada
Takuro Shimada
Masumi Miyazaki
Fumi Ito
Tatsuro Yokote
Application Number:
JP2021512148A
Publication Date:
September 12, 2023
Filing Date:
March 31, 2020
Export Citation:
Assignee:
AGC Inc.
International Classes:
G02B5/22; C09B57/00; G02B5/26; G02B5/28
Domestic Patent References:
| JP2017146506A | ||||
| JP2018028605A |
Foreign References:
| WO2016158461A1 | ||||
| WO2013038938A1 | ||||
| WO2019049884A1 | ||||
| WO2015022892A1 | ||||
| WO2019151344A1 |
Attorney, Agent or Firm:
Patent Attorney Corporation Eiko Office