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公开(公告)号：US12235481B2
公开(公告)日：2025-02-25
申请号：US16627638
申请日：2019-07-12
Applicant: DEXERIALS CORPORATION
Inventor： Shigeshi Sakakibara , Akio Takada , Kazuyuki Shibuya , Toshiaki Sugawara , Yuusuke Matsuno
Abstract: A polarizing plate having excellent optical properties includes: a transparent substrate that is transparent to light in a used wavelength band; grid-shaped protrusions arranged on the transparent substrate at a pitch shorter than the wavelength of light in the used band, extending in a predetermined direction, and has a reflective layer and a reflection control layer; and a groove which is recessed between the grid-shaped protrusions and whose width in a direction orthogonal to the predetermined direction is reduced to zero in the depth direction. This improves transmittance and reflectance properties, thereby achieving excellent optical properties.
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公开(公告)号：US11112550B2
公开(公告)日：2021-09-07
申请号：US16640609
申请日：2019-07-30
Applicant: DEXERIALS CORPORATION
Inventor： Kazuyuki Shibuya , Shigeshi Sakakibara , Toshiaki Sugawara , Yusuke Matsuno , Akio Takada
IPC: G02B5/30 , G02F1/1335 , C09K13/00
Abstract: Provided is a polarizing plate that is a polarizing plate having a wire grid structure, and includes a transparent substrate and a plurality of protrusions that extend in a first direction on the transparent substrate and are periodically arranged at a pitch shorter than a wavelength of light in a use band. Each of the protrusions includes a reflective layer, a multilayer film, and an optical property improving layer located between the reflective layer and the multilayer film. The optical property improving layer contains an oxide that contains a constituent element of which the reflective layer is composed. An etching rate of the optical property improving layer with respect to a chlorine-based gas is no less than 6.7 times and no more than 15 times an etching rate of the multilayer film.
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公开(公告)号：US20210055591A1
公开(公告)日：2021-02-25
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 , 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：US20180224589A1
公开(公告)日：2018-08-09
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
IPC: G02B5/30
CPC classification number: G02B5/3058 , G02B1/14
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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5.发明申请公开(公告)号：US20140063467A1
公开(公告)日：2014-03-06
申请号：US13975805
申请日：2013-08-26
Applicant: DEXERIALS CORPORATION
Inventor： Eiji Takahashi , Akio Takada
IPC: G02B5/30
CPC classification number: G02B5/3058 , G02F2001/133548
Abstract: A polarizing element includes a transparent substrate, a reflective layer constituting, on the transparent substrate, grid-shaped convexities arrayed at a pitch smaller than a wavelength in a used optical bandwidth, a dielectric layer formed on the reflective layer, a diffusion barrier layer formed on the dielectric layer, and an absorbing layer formed on the diffusion barrier layer such that the diffusion barrier layer is sandwiched between the absorbing layer and the dielectric layer. This polarizing element has an excellent optical property and is able to prevent mixing of the absorbing layer and the dielectric layer under a high temperature.
Abstract translation: 偏振元件包括透明基板，在透明基板上构成以比所使用的光学带宽中的波长小的间距排列的格子状凸起的反射层，形成在反射层上的电介质层，形成的扩散阻挡层 以及形成在扩散阻挡层上的吸收层，使得扩散阻挡层夹在吸收层和电介质层之间。 该偏光元件具有优异的光学特性，并且能够防止吸收层和介电层在高温下的混合。
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Patent Agency Ranking
公开(公告)号：US11125413B2
公开(公告)日：2021-09-21
申请号：US15770816
申请日：2016-10-03
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：US20210208323A1
公开(公告)日：2021-07-08
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
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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公开(公告)号：US11029458B2
公开(公告)日：2021-06-08
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：US11002993B2
公开(公告)日：2021-05-11
申请号：US15185305
申请日：2016-06-17
Applicant: Dexerials Corporation
Inventor： Akio Takada , Eiji Takahashi , Nobuyuki Koike , Koji Sasaki , Naoki Hanashima
IPC: G02F1/01 , G02B5/30 , G02B1/14 , G02F1/1335
Abstract: Provided is a depolarizing plate having a superior degree of depolarization to conventional depolarizing plates. The depolarizing plate includes a light-transmitting substrate having a surface layer portion in which a fine pattern is provided that includes a plurality of curved lines randomly disposed at a pitch of no greater than a wavelength of light, and that exhibits structural birefringence.
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公开(公告)号：US20200341179A1
公开(公告)日：2020-10-29
申请号：US16963442
申请日：2019-05-29
Applicant: Dexerials Corporation
Inventor： Kazuyuki Shibuya , Shigeshi Sakakibara , Toshiaki Sugawara , Yusuke Matsuno , Akio Takada
Abstract: Provided is a polarizing plate having an appropriate reflectance characteristic formed from an inexpensive material by an inexpensive production device. In a polarizing plate having a wire grid structure including: a transparent substrate; and a grid-like projection that is arranged on the transparent substrate at a pitch smaller than a wavelength of light in a used band and extends in a predetermined direction, an absorption layer constituting the grid-like projection contains an impurity semiconductor obtained by adding a minute amount of a specific element to an intrinsic semiconductor.
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