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公开(公告)号：US11966068B2
公开(公告)日：2024-04-23
申请号：US17054404
申请日：2019-05-07
Applicant: Dexerials Corporation
Inventor： Akio Takada , Kazuyuki Shibuya , Shigeshi Sakakibara , Toshiaki Sugawara , Yusuke Matsuno
CPC classification number: G02B5/3083 , C03C15/00
Abstract: Provided is a structural birefringence-type inorganic wave plate having excellent heat resistance and durability, and a fine pattern. Also provided is a manufacturing method for an inorganic wave plate by which, even in the case of a fine pattern, productivity is high, and a desired phase difference is easily achieved and stably obtained. This inorganic wave plate is obtained by utilizing a selective interaction between a polymer having a repeating unit containing a carbonyl group, and a metallic oxide precursor, the inorganic wave plate having a wire grid structure provided with a transparent substrate, and grid-shaped protruding portions arranged at a pitch shorter than the wavelength of light in a used band on at least one surface of the transparent substrate and extending in a predetermined direction, the main component of the grid-shaped protruding portion being a metallic oxide.
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公开(公告)号：US11592156B2
公开(公告)日：2023-02-28
申请号：US17396116
申请日：2021-08-06
Applicant: DEXERIALS CORPORATION
Inventor： Naoki Hanashima , Akio Takada , Kazuyuki Shibuya , Yusuke Matsuno
Abstract: There is provided a method to manufacture a diffuser plate with better productivity and exhibiting an excellent diffusion property and having excellent durability with respect to light having large coherence, the microlens array diffuser plate including: a microlens group positioned on a surface of a transparent substrate. The diffuser plate includes two or more unit cells that are continuously set in array, the unit cell includes a plurality of microlenses positioned on the surface of the transparent substrate, and ridge lines between the microlenses adjacent to each other are nonparallel to each other, and are nonparallel to the transparent substrate.
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公开(公告)号：US11543702B2
公开(公告)日：2023-01-03
申请号：US16901699
申请日：2020-06-15
Applicant: DEXERIALS CORPORATION
Inventor： Kazuyuki Shibuya , Shigeshi Sakakibara , Toshiaki Sugawara , Yusuke Matsuno , Akio Takada
IPC: G02F1/13357 , G02F1/1335 , G02B5/30
Abstract: This polarizer is a polarizer having a wire grid structure that includes a transparent substrate, a dielectric film which extends across one surface of the transparent substrate and has a lower refractive index than the transparent substrate, and a plurality of projections which extend in a first direction on top of the dielectric film and are arrayed periodically at a pitch that is shorter than the wavelength of the light in the used light region, wherein the transparent substrate has a thermal conductivity of at least 10 W/m·K but not more than 40 W/m·K, the plurality of projections each have, in order from the side closer to the dielectric film, a first dielectric layer, a reflective layer and a functional layer, the reflective layer contains a metal or a metal compound, and the functional layer is formed from a material different from the reflective layer.
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公开(公告)号：US20210003746A1
公开(公告)日：2021-01-07
申请号：US16963970
申请日：2019-01-21
Applicant: Dexerials Corporation
Inventor： Kazuyuki Shibuya , Katsuhiro Shindo , Naoki Hanashima , Yusuke Matsuno
Abstract: In order to provide an optical device and a diffusion plate which has high transmittance and is capable of reducing speckle noise, the present it is a diffusion plate 1 in which a plurality of microlens cells 11 are arranged on both surfaces of a transparent substrate 10, the diffusion plate 1 having a first microlens array 12A which is formed on one surface of the transparent substrate 10 and comprises a plurality of concave or convex microlens cells 11, and a second microlens array 12B which is formed on the other surface on the reverse side from the one surface and comprises a plurality of concave or convex microlens cells 11, and the diffusion plate 1 being configured so that light emitted from the microlens cells 11 constituting the first microlens array 12A is incident on the microlens cells 11 constituting the second microlens array 12B.
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公开(公告)号：US20190094438A1
公开(公告)日：2019-03-28
申请号：US16145716
申请日：2018-09-28
Applicant: Dexerials Corporation
Inventor： Akio Takada , Kazuyuki Shibuya , Shigeshi Sakakibara , Toshiaki Sugawara , Yusuke Matsuno
Abstract: To provide a polarizing plate and an optical apparatus capable of improving durability while maintaining excellent optical characteristics. Provided is a polarizing plate 1 with a wire grid structure, including: a transparent substrate 10; and a grid-shaped convex portion 11 which is arranged on the transparent substrate 10 at a pitch P shorter than a wavelength of light of a use band, extends in a predetermined direction, and includes a reflection layer 12 formed of a light reflective material, wherein a surface of the grid-shaped convex portion 11 and a surface of a bottom surface portion of a groove formed between the grid-shaped convex portions 11 are provided with a protection film 20 which covers the surfaces thereof and the protection film 20 is formed by two kinds or more of protection films including an organic film formed of an organic material.
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Patent Agency Ranking
公开(公告)号：US11971568B2
公开(公告)日：2024-04-30
申请号：US17058396
申请日：2019-05-20
Applicant: Dexerials Corporation
Inventor： Kazuyuki Shibuya , Shigeshi Sakakibara , Toshiaki Sugawara , Yusuke Matsuno , Akio Takada
IPC: G02B5/30
CPC classification number: G02B5/3058
Abstract: A polarizing plate may have high transmittance characteristics and suppressed reflected light. An optical device may be provided with the polarizing plate. The polarizing plate may have a wire grid structure that includes a transparent substrate and grid-like projection portions arranged on the transparent substrate at a pitch shorter than the wavelength of light in a used bandwidth and extending in a predetermined direction. The grid-like projection portions may each have a reflective layer and a dielectric layer in order from the transparent substrate side. When viewed from the predetermined direction, the reflective layer has may have a step on the side thereof and may have the largest bottom width on the transparent substrate side.
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7.发明授权公开(公告)号：US11500140B2
公开(公告)日：2022-11-15
申请号：US16755441
申请日：2019-07-25
Applicant: DEXERIALS CORPORATION
Inventor： Kazuyuki Shibuya , Shigeshi Sakakibara , Toshiaki Sugawara , Yusuke Matsuno , Akio Takada
IPC: G02B5/30 , G02F1/1335 , G02B1/118
Abstract: A polarizing plate includes a substrate and a plurality of projections which protrude with respect to the substrate, in which the plurality of projections are formed by periodically arraying projections extending in a first direction in plan view, each of the projections includes a reflective layer and a tip end portion, the tip end portion is arranged at a position further away from the substrate than the reflective layer, the tip end portion is continuously widened from a first end portion, which is a tip end, to a second end portion on a side close to the substrate in a first cut plane perpendicular to the substrate and the first direction, and a first surface of the tip end portion includes a continuous first curved surface.
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8.发明授权公开(公告)号：US11385389B2
公开(公告)日：2022-07-12
申请号：US16601672
申请日：2019-10-15
Applicant: DEXERIALS CORPORATION
Inventor： Kazuyuki Shibuya , Shigeshi Sakabara , Toshiaki Sugawara , Yusuke Matsuno , Akio Takada
IPC: G02B1/18 , G02B5/30 , G02F1/1335 , G02B1/14
Abstract: Provided are a polarizing plate having excellent optical properties and durability, and a method for manufacturing the polarizing plate. The polarizing plate includes: a transparent substrate transparent to light in a used wavelength band; lattice-shaped protrusions arranged on the transparent substrate at a pitch shorter than the wavelength of light in the used wavelength band, extending in a predetermined direction, and having a reflective layer, a first dielectric layer, an absorbing layer, and a second dielectric layer in this order; a dielectric portion consisting of a dielectric discontinuously formed on a surface of the lattice-shaped protrusions and a surface of a bottom floor between the lattice-shaped protrusions; and a water-repellent portion formed on a surface of the dielectric portion and having water-repellent properties.
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公开(公告)号：US11353635B2
公开(公告)日：2022-06-07
申请号：US16271965
申请日：2019-02-11
Applicant: DEXERIALS CORPORATION
Inventor： Kazuyuki Shibuya , Hideto Sagawa , Takahiro Kimura , Naoki Hanashima
Abstract: There is provided a microlens array diffuser plate including: a microlens group positioned on a surface of a transparent substrate. The microlens group at least corresponding to a light ray entering part in the microlens array diffuser plate includes two or more unit cells that are continuous in an array sequence, and the unit cells include a plurality of microlenses positioned on the surface of the transparent substrate. The light ray entering part has at least two regions having different average diffusion angles.
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公开(公告)号：US10436964B2
公开(公告)日：2019-10-08
申请号：US15888332
申请日：2018-02-05
Applicant: Dexerials Corporation
Inventor： Akio Takada , Seiji Kumagai , Hideto Sagawa , Takahiro Kimura , Kazuyuki Shibuya , Toshiaki Sugawara , Shigeshi Sakakibara , Yusuke Matsuno
Abstract: Provided is an inorganic polarizing plate having a wire grid structure including: a transparent substrate; and grid-shaped protrusions arranged on the transparent substrate at a pitch shorter than a wavelength of light in a use band, in which the grid-shaped-protrusion includes, in order from the transparent substrate side, a reflection layer and a reflection suppressing layer which includes a dielectric material and a non-dielectric material and of which a content of the non-dielectric material increases as a separation from the reflection layer increases. In addition, provided are a method of manufacturing the inorganic polarizing plate and an optical instrument including the inorganic polarizing plate.
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