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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
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).
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公开(公告)号：US20240345291A1
公开(公告)日：2024-10-17
申请号：US18751442
申请日：2024-06-24
Applicant: AGC Inc.
Inventor： Kazuhiko SHIONO , Motoshi NAKAYAMA , Takashi NAGATA
Abstract: An optical filter includes: a substrate; and a dielectric multilayer film (A) laid on or above at least one main surface of the substrate as an outermost layer, the dielectric multilayer film (A) being configured to reflect a light in a wavelength region of 900 nm or more, in which the substrate includes a resin film including a resin and a dye (I) having a maximum absorption wavelength of 700 nm to 800 nm in the resin, the optical filter transmits a visible light and a light in at least a partial wavelength region of 750 nm to 1000 nm, and the optical filter satisfies all of spectral characteristics (i-1) to (i-9).
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公开(公告)号：US20220291433A1
公开(公告)日：2022-09-15
申请号：US17804007
申请日：2022-05-25
Applicant: AGC Inc.
Inventor： Motoshi NAKAYAMA , Kazuhiko SHIONO , Ryo HIRANO
Abstract: The present invention relates to an optical filter including a resin base material including an infrared-absorbing pigment layer, and a pair of inorganic dielectric layers which are respectively disposed on or above both main surfaces of the resin base material as outermost layers, in which at least one of the pair of inorganic dielectric layers satisfies at least one of a condition in which a film thickness is 4 μm or greater, and a condition in which the number of layers is 30 or greater, and a ratio of a total film thickness of the pair of inorganic dielectric layers to a film thickness of the resin base material is greater than 8%.
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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.
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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).
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Patent Agency Ranking
公开(公告)号：US20240061165A1
公开(公告)日：2024-02-22
申请号：US18384838
申请日：2023-10-28
Applicant: AGC Inc.
Inventor： Motoshi NAKAYAMA , Mitsuo OSAWA
CPC classification number: G02B6/0016 , G02B6/0036 , G02B6/0065 , G02B27/0172
Abstract: A light guide element includes a light guide substrate that is a single-layer light guide substrate; and a diffraction layer formed on the light guide substrate. The diffraction layer includes a first diffraction grating configured to in-couple light into the light guide substrate; and a second diffraction grating configured to outcouple totally internally reflected light having propagated in the light guide substrate out of the light guide substrate. The first diffraction grating in-couples the incident light in a range of 60 degrees or more including a direction normal to substrate, for at least one of first wavelength of 450 nm±20 nm, second wavelength of 530 nm±20 nm, and third wavelength of 630 nm±20 nm. The second diffraction grating outcouples the totally internally reflected light in a range of 60 degrees or more including the direction normal to substrate, for at least one of the first, second, and third wavelengths.
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公开(公告)号：US20220276420A1
公开(公告)日：2022-09-01
申请号：US17663274
申请日：2022-05-13
Applicant: AGC Inc.
Inventor： Yuichiro ORITA , Kazuhiko SHIONO , Motoshi NAKAYAMA , Takuro SHIMADA
IPC: G02B5/22
Abstract: An optical filter includes: a transparent substrate; and an absorption layer on the transparent substrate, the absorption layer containing at least one dye (X) having a maximum absorption wavelength in 600 to 1000 nm. A laminate of the transparent substrate and the absorption layer satisfies all of the following characteristics (i-2) to (i-4): (i-2) a maximum internal transmittance in 700 to 850 nm is 35% or lower; (i-3) a difference between the maximum internal transmittance and a minimum internal transmittance in 700 to 850 nm is 20% or smaller; and (i-4) OD(A) and OD(B) satisfy the following relationship: OD(A)/OD(B)
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公开(公告)号：US20210088802A1
公开(公告)日：2021-03-25
申请号：US17114985
申请日：2020-12-08
Applicant: AGC INC.
Inventor： Ryota MURAKAMI , Motoshi NAKAYAMA
Abstract: A diffractive optical element includes: a substrate; a protrusion and recess portion that is formed on one surface of the substrate and imposes predetermined diffraction on incident light; and an antireflection layer provided between the substrate and the protrusion and recess portion. An effective refractive index difference Δn in a wavelength range of the incident light between a first medium constituting a protrusion of the protrusion and recess portion and a second medium constituting a recess of the protrusion and recess portion is 0.70 or more. An exit angle range θout of diffraction light exiting from the protrusion and recess portion when the incident light enters the substrate from a normal direction of the substrate is 60° or more. Total efficiency of diffraction light exiting from the protrusion and recess portion in the exit angle range is 65% or more.
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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
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.
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公开(公告)号：US20240176054A1
公开(公告)日：2024-05-30
申请号：US18418416
申请日：2024-01-22
Applicant: AGC Inc.
Inventor： Motoshi NAKAYAMA , Takashi NAGATA , Kazuhiko SHIONO , Takeru WAKABAYASHI
IPC: G02B5/20
CPC classification number: G02B5/208
Abstract: An optical filter, includes: a near infrared ray absorbing glass, dielectric multilayer films laid on or above both major surfaces of the near infrared ray absorbing glass, and an absorption layer laid on or above a surface of at least one of the dielectric multilayer films and having a maximum absorption wavelength in a near infrared light region, in which the optical filter satisfies all of spectral characteristics (i-1) to (i-5).
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