公开(公告)号：US20210003911A1

公开(公告)日：2021-01-07

申请号：US17021482

申请日：2020-09-15

Applicant: AGC INC.

Inventor： Yoshiharu OOI (Deceased) ,  Koichi TASHIMA ,  Kensuke ONO ,  Atsushi KOYANAGI

IPC: G03B21/20 ,  G02B3/00 ,  G02B27/30 ,  G02B5/18

Abstract: A homogenizer includes a convex-lens array pair including a first convex-lens array disposed on a light entrance side and a second convex-lens array disposed on a light emission side. The first convex-lens array and the second convex-lens array are disposed so as to face each other such that each of the convex-lens arrays has a lens surface opposed to each other outward or inward. The first convex-lens array includes a plurality of first convex lenses in an array arrangement. The second convex-lens array includes a plurality of second convex lenses in an array arrangement. The first convex lens has an average internal transmission angle for incident light entering a lens-surface center region in the lens cross-section and being in parallel with the symmetry axis being equal to or more than 1.3 times an average internal transmission angle of a spherical convex lens.

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：US20240263974A1

公开(公告)日：2024-08-08

申请号：US18625325

申请日：2024-04-03

Applicant: AGC Inc.

Inventor： Kazuya TAKEMOTO ,  Atsushi KOYANAGI ,  Naoto TATSUOKA

IPC: G01D11/24 ,  G02B5/28 ,  H05B3/16

CPC classification number: G01D11/245 ,  G02B5/281 ,  H05B3/16

Abstract: A sensor cover, provided in an opening of a housing that houses a sensor, includes a conductor; a dielectric multilayer film; and a heating film, in a desired order from an outside of the housing toward an inside of the housing. The conductor and the heating film are insulated from each other. A shortest distance between the conductor and the heating film is 2.0 μm or more.