公开(公告)号：US20220206201A1

公开(公告)日：2022-06-30

申请号：US17645786

申请日：2021-12-23

Applicant: AGC Inc. ,  Optical Coatings Japan

Inventor： Yosuke SUGIHARA ,  Yasuyuki TAKIMOTO ,  Takahiro MASHIMO ,  Atsushi KOYANAGI ,  Naoto TATSUOKA ,  Masaaki MIYAKE ,  Hideaki TAKAHOSHI

IPC: G02B5/28 ,  G02B5/26 ,  G02B1/115

Abstract: An optical filter includes a substrate and a dielectric multilayer film laid as an outermost layer on at least one major surface of the substrate. The dielectric multilayer film includes a low-refractive index film and a high-refractive index film provided alternately. At least one film selected from the group consisting of the low-refractive index film and the high-refractive index film satisfies the following optical characteristics (i-1) and (i-2A): (i-1) an extinction coefficient k600 at a wavelength of 600 nm is 0.12 or larger; and (i-2A) a minimum extinction coefficient k1530-1570MIN in a wavelength range of 1530 to 1570 nm is 0.01 or smaller; and the optical filter satisfies the following optical characteristic (ii-1A): (ii-1A) light in a wavelength range of 400 to 680 nm is blocked and light in the wavelength range of 1530 to 1570 nm is transmitted.

公开(公告)号：US20220145697A1

公开(公告)日：2022-05-12

申请号：US17580205

申请日：2022-01-20

Applicant: AGC Inc.

Inventor： Shunya TAKI ,  Naoko OKADA ,  Yasuyuki TAKIMOTO ,  Haruhiko YOSHINO

IPC: E06B9/24 ,  B32B17/10 ,  C03C17/36 ,  E06B3/67

Abstract: A laminated body includes a transparent substrate having a laminated film. The laminated film includes a dielectric layer containing silicon nitride, a barrier layer composed of a single film or two or more films, and a metal layer containing silver. The barrier layer has a thickness of from 0.1 nm to 10 nm. Each film of the barrier layer includes a material having a crystal structure of a face-centered cubic structure with a lattice constant of from 3.5 to 4.2, a hexagonal close-packed structure with a lattice constant of from 2.6 to 3.3, a body-centered cubic structure with a lattice constant of from 2.9 to 3.2, or a tetragonal crystal with a lattice constant of from 2.9 to 4.4. The metal layer has a thickness of from 7 nm to 25 nm. An orientation index P of the metal layer falls within a range from 4.5 to 20.