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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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44.发明授权公开(公告)号：US11262491B2
公开(公告)日：2022-03-01
申请号：US16675777
申请日：2019-11-06
Applicant: Dexerials Corporation
Inventor： Akio Takada , Eiji Takahashi , Nobuyuki Koike , Koji Sasaki
IPC: G02B5/30 , G02F1/1335 , G02B5/18
Abstract: Provided are a polarizing plate having excellent optical characteristics, and a method for manufacturing the polarizing plate. The present invention is provided with: a translucent substrate through which light passes in a working band; a bundle structure layer constituted of a columnar sheaf comprising one or more material from among dielectrics, metals, and semiconductors, the bundle structure layer being formed on the translucent substrate; an absorption layer formed on the bundle structure layer; a dielectric layer formed on the absorption layer; and a reflection layer formed on the dielectric layer and arranged as a one-dimensional lattice at a pitch that is smaller than the wavelength of the light in the working band. Because the bundle structure layer increases light absorption and light scattering, the result is that reflectivity can be reduced and excellent optical characteristics obtained.
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公开(公告)号：US10907250B2
公开(公告)日：2021-02-02
申请号：US15661041
申请日：2017-07-27
Applicant: Dexerials Corporation
Inventor： Eiji Takahashi , Akio Takada , Nobuyuki Koike
Abstract: Provided are a block copolymer pattern formation method that enables formation, over a large area, of a block copolymer pattern with a perpendicularly oriented lamellar structure enabling nanoscale surface shape control, and a diffraction limited optical element produced using the block copolymer pattern formation method. The block copolymer pattern formation method is a method for forming a block copolymer pattern on a substrate and includes forming an oblique angle vapor deposited film on the substrate, applying a block copolymer onto the oblique angle vapor deposited film that has been formed, and subjecting the block copolymer that has been applied to perpendicularly oriented lamellar structure development post-treatment to form a pattern with a perpendicularly oriented lamellar structure.
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Patent Agency Ranking
公开(公告)号：US10852465B2
公开(公告)日：2020-12-01
申请号：US16370786
申请日：2019-03-29
Applicant: DEXERIALS CORPORATION
Inventor： Akio Takada
IPC: G02B5/30
Abstract: A polarizing plate capable of achieving high reliability and a method for manufacturing a polarizing plate. The polarizing plate includes a transparent substrate that is transparent to light of a used wavelength band; a metal grid in which a reflective layer made of a metal is arranged to extend in a predetermined direction on the transparent substrate at a pitch finer than a wavelength of light of the used band; a metal subgrid made of the same metal as the reflective layer formed on the metal grid at a pitch finer than that of the metal grid; and an absorbing layer made by filling a light absorbing material into a recess of the metal subgrid.
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公开(公告)号：US20200326463A1
公开(公告)日：2020-10-15
申请号：US16840726
申请日：2020-04-06
Applicant: Dexerials Corporation
Inventor： Toshiaki Sugawara , Akio Takada
Abstract: Provided are a thin film for optical element as a single-layer thin film which contains a Si simple substance, a Si compound excluding Si alloy, and a metal or metal compound, a method of manufacturing the thin film for optical element, and an optical element including the thin film for optical element. Further provided are an inorganic polarizing plate including a reflection suppressing layer composed of the thin film for optical element, a method of manufacturing the inorganic polarizing plate, and an optical device including the inorganic polarizing plate.
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公开(公告)号：US10317599B2
公开(公告)日：2019-06-11
申请号：US15070702
申请日：2016-03-15
Applicant: DEXERIALS CORPORATION
Inventor： Nobuyuki Koike , Masatoshi Sasaki , Akio Takada
Abstract: A wavelength plate, wherein first birefringent layer and second birefringent layer are laminated such that in-plane directions of optical axes of first birefringent layer and second birefringent layer cross each other, wherein the wavelength plate satisfies formulae (1), (2), (3), and (4), and wherein at least one of first birefringent layer and second birefringent layer is obliquely-deposited birefringent layer formed by oblique deposition, Δn1×t1=λ/2 (1) 1.7≤(Δn1×t1)/(Δn2×t2)≤2.7 (2) 5°≤θ1≤30° (3) (2θ1+35°)≤θ2≤(2θ1+50°) (4) where Δn1 represents birefringence of first birefringent layer, Δn2 represents birefringence of second birefringent layer, t1 represents a film thickness of first birefringent layer, t2 represents a film thickness of second birefringent layer, θ1 represents angle between optical axis of first birefringent layer and incident linearly polarized light, θ2 represents angle between optical axis of second birefringent layer and incident linearly polarized light, and λ represents a predetermined value in a range of wavelengths of incident light.
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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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公开(公告)号：US09952368B2
公开(公告)日：2018-04-24
申请号：US14901607
申请日：2014-06-27
Applicant: Dexerials Corporation
Inventor： Koji Sasaki , Masatoshi Sasaki , Nobuyuki Koike , Akio Takada
CPC classification number: G02B5/3083 , B32B37/1284 , B32B2307/42 , C09J5/00 , C09J2483/00 , G02B27/283 , G02B27/286
Abstract: This invention provides a polarization conversion element that is highly resistant to the heat and light that result from increased brightness levels. In said polarization conversion element, which is provided with a polarizing beam-splitter array in which polarizing beam splitters having polarization separation layers and reflecting prisms having reflective layers are bonded together in alternation, said polarizing beam splitters and reflecting prisms are bonded together by first adhesive layers each comprising a silicone adhesive.
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