Title:
OPTICAL FILTER
Document Type and Number:
WIPO Patent Application WO/2024/048507
Kind Code:
A1
Abstract:
The present invention pertains to an optical filter comprising a first dielectric multilayer film, a resin film, a phosphoric acid glass, and a second dielectric multilayer film, in this order. The resin film contains a resin and a pigment having specific spectroscopic characteristics. The second dielectric multilayer film includes: H2 layers having a refractive index and QWOT that fall within specific ranges; and when a H2 layer which is closest to the phosphoric acid glass is a first H2 layer, includes a first M2 layer, having a QWOT that satisfies a specific range, between the first H2 layer and the phosphoric acid glass. The optical filter satisfies all of prescribed spectroscopic characteristics (i−1) through (i−4).
Inventors:
SHIONO KAZUHIKO (JP)
SHIMADA TAKURO (JP)
ORITA YUICHIRO (JP)
ENDO KIYOKAZU (JP)
SAKAGAMI TAKAHIRO (JP)
NAGATA TAKASHI (JP)
KAMIJYO KATSUSHI (JP)
SHIMADA TAKURO (JP)
ORITA YUICHIRO (JP)
ENDO KIYOKAZU (JP)
SAKAGAMI TAKAHIRO (JP)
NAGATA TAKASHI (JP)
KAMIJYO KATSUSHI (JP)
Application Number:
PCT/JP2023/030936
Publication Date:
March 07, 2024
Filing Date:
August 28, 2023
Export Citation:
Assignee:
AGC INC (JP)
International Classes:
G02B5/28; G02B5/22; G03B11/00
Domestic Patent References:
| WO2014034386A1 | 2014-03-06 | |||
| WO2019189039A1 | 2019-10-03 |
Foreign References:
| JP2020109496A | 2020-07-16 | |||
| JP2020122970A | 2020-08-13 |
Attorney, Agent or Firm:
EIKOH, P.C. (JP)
Download PDF: