公开(公告)号：US20250122115A1

公开(公告)日：2025-04-17

申请号：US18999823

申请日：2024-12-23

Applicant: AGC Inc.

Inventor： Takahiro SAKAGAMI ,  Motoshi NAKAYAMA

IPC: C03C4/08 ,  C03C3/062 ,  C03C3/068 ,  C03C3/15 ,  C03C13/04 ,  G02B5/22

Abstract: A glass contains ytterbium and has a transmittance of 30% or less for light having a wavelength of 940 nm in terms of a thickness of 0.4 mm. The glass may have a transmittance of 78% or more for light having a wavelength of 850 nm in terms of a thickness of 0.4 mm.

公开(公告)号：US20250028100A1

公开(公告)日：2025-01-23

申请号：US18902372

申请日：2024-09-30

Applicant: AGC Inc.

Inventor： Takahiro SAKAGAMI

IPC: G02B5/20 ,  C03C3/17 ,  H04N23/55

Abstract: A glass for an optical filter, the glass being a phosphate glass including Cu, in which the glass has: an average transmittance of 80% or more at a wavelength of 430 nm to 550 nm; an average transmittance of 2% or less at a wavelength of 800 nm to 950 nm; an average transmittance of 3% or less at a wavelength of 1000 nm to 1200 nm; an average transmittance of 5% or less at a wavelength of 700 nm to 1200 nm; a transmittance of 25% or more at a wavelength of 1550 nm; and a wavelength at which a transmittance is 50% of 615 nm or more in a wavelength range of 600 nm to 800 nm.

公开(公告)号：US20250044489A1

公开(公告)日：2025-02-06

申请号：US18922613

申请日：2024-10-22

Applicant: AGC Inc.

Inventor： Motoshi NAKAYAMA ,  Takahiro SAKAGAMI ,  Takashi NAGATA ,  Kazuhiko SHIONO

IPC: G02B5/20 ,  G02B1/113 ,  G02B5/28

Abstract: The present invention pertains to an optical filter including: a light-absorbing material Y900-1000 having a maximum absorption wavelength in a wavelength region of 900 nm to 1,000 nm, and a dielectric multilayer film, in which the optical filter satisfies all of spectral characteristics (i-1) to (i-6), and the optical filter may satisfy spectral characteristic (i-7).

公开(公告)号：US20220003896A1

公开(公告)日：2022-01-06

申请号：US17448415

申请日：2021-09-22

Applicant: AGC Inc.

Inventor： Takashi NAGATA ,  Takahiro SAKAGAMI

IPC: G02B1/115 ,  G02B5/28

Abstract: An optical filter includes a glass substrate in which an average-optical-transmittance in a specific-visible-region defined as a wavelength range of 430 nm to 650 nm is 80% or more and an average-optical-transmittance in a specific-infrared-region defined as a wavelength range of 900 nm to 1,000 nm is 25% to 85%, a first-optical-multilayer film in which an average-optical-transmittance in the specific-visible-region is 80% or more and an average-optical-transmittance in the specific-infrared-region is in a range of 45% to 65%, the first-optical-multilayer film having, between the specific-visible region and the specific-infrared-region, a first-blocking-band that blocks light, and a second-optical-multilayer-film in which an average-optical-transmittance in the specific-visible-region is 80% or more and an average-optical-transmittance in the specific-infrared-region is in a range of 45% to 65%, the second-optical-multilayer film having, on a side of wavelengths longer than those in the specific-infrared-region, a second-blocking-band that blocks light.

公开(公告)号：US20250116803A1

公开(公告)日：2025-04-10

申请号：US18982967

申请日：2024-12-16

Applicant: AGC Inc.

Inventor： Kazuhiko SHIONO ,  Yayoi YAMAMORI ,  Takahiro SAKAGAMI ,  Takashi NAGATA ,  Katsushi KAMIJYO

IPC: G02B5/22 ,  G02B1/02 ,  G02B1/115

Abstract: An optical filter includes a glass substrate having a first main surface, a second main surface opposite the first main surface, and an end surface connecting the first and second main surfaces, the glass substrate being a phosphate glass containing an absorbent, and a first antireflection layer disposed directly or indirectly on the first main surface of the glass substrate, wherein the first main surface of the glass substrate is coated with a first inorganic film, and a second inorganic film is provided directly or indirectly on the second main surface of the glass substrate, with the end surface being coated with a third inorganic film, and wherein the first inorganic film is a film that is closest to the glass substrate among films constituting the first antireflection layer, or a film that is different from a film composed of a plurality of films constituting the first antireflection layer.

公开(公告)号：US20220112121A1

公开(公告)日：2022-04-14

申请号：US17645553

申请日：2021-12-22

Applicant: AGC INC.

Inventor： Takahiro SAKAGAMI ,  Kazuhiko SHIONO

IPC: C03C4/08 ,  C03C3/17 ,  C09D5/32 ,  C09D179/08 ,  C09D7/41 ,  G02B5/20 ,  C03C17/42

Abstract: A near-infrared cut filter glass has: an average transmittance in a wavelength range of 400-550 nm of 50-92%; a transmittance at a wavelength of 700 nm of 40-92%; an average transmittance in a wavelength range of 850-950 nm of 0.0001-70%; and an average transmittance in a wavelength range of 1200-2500 nm of 0.0001-60%.

公开(公告)号：US20250052935A1

公开(公告)日：2025-02-13

申请号：US18922524

申请日：2024-10-22

Applicant: AGC Inc.

Inventor： Motoshi NAKAYAMA ,  Takahiro SAKAGAMI ,  Takashi NAGATA ,  Kazuhiko SHIONO

IPC: G02B5/22

Abstract: An optical filter includes: an absorber including an inorganic material including ytterbium; an absorption layer including a dye and a resin, the dye having a maximum absorption wavelength between 350 nm and 1,200 nm; and a dielectric multilayer film. The absorber may have a flat plate shape, and the absorber may have a thickness of 3 mm or less.

公开(公告)号：US20250044490A1

公开(公告)日：2025-02-06

申请号：US18922590

申请日：2024-10-22

Applicant: AGC Inc.

Inventor： Motoshi NAKAYAMA ,  Takahiro SAKAGAMI ,  Takashi NAGATA ,  Kazuhiko SHIONO

IPC: G02B5/22

Abstract: An optical filter includes: a light-absorbing material X800S having a maximum absorption wavelength in a wavelength region shorter than 800 nm; a light-absorbing material Y850L having a maximum absorption wavelength in a wavelength region longer than 850 nm; and a dielectric multilayer film, in which the optical filter satisfies spectral characteristics (i-1) to (i-5).

公开(公告)号：US20240418916A1

公开(公告)日：2024-12-19

申请号：US18814261

申请日：2024-08-23

Applicant: AGC Inc.

Inventor： Takahiro SAKAGAMI

IPC: G02B5/20 ,  C03C3/21 ,  G02B1/00

Abstract: Optical filter-type glass contains a P component, a Cu component, and Mo component, is substantially free of F, and includes: in mass % on an oxide basis, 60% to 75% of P2O5; 9% to 16.5% of Al2O3; 4% to 20% of ΣR2O, where R2O is one or more components selected from Li2O, Na2O, K2O, Rb2O, and Cs2O, and ΣR2O is a total amount of R2O; 0% to 8% of ΣR′O, where R′O is one or more components selected from CaO, MgO, BaO, SrO, and ZnO, and ΣR′O is a total amount of R′O; more than 7% up to 20% of CuO; and 0.01% to 1.18% of MoO3.

公开(公告)号：US20250123431A1

公开(公告)日：2025-04-17

申请号：US19002256

申请日：2024-12-26

Applicant: AGC INC.

Inventor： Takashi NAGATA ,  Takahiro SAKAGAMI ,  Kazuhiko SHIONO

IPC: G02B5/20

Abstract: An optical filter includes: a dielectric multilayer film 1; a substrate comprising a near-infrared ray absorbing glass and a resin film; and a dielectric multilayer film 2 in this order. The resin film comprises a near-infrared ray absorbing dye and a resin, the near-infrared ray absorbing glass is a fluorophosphate glass containing P, Cu, and F, and the optical filter satisfies all of the spectral characteristics (i-1) to (i-3), (i-5), and (i-13).