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.

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

IPC: G02B5/30 ,  G02B27/28 ,  B32B37/12 ,  C09J5/00

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.

公开(公告)号：US11287693B2

公开(公告)日：2022-03-29

申请号：US16649794

申请日：2018-10-05

Applicant: DEXERIALS CORPORATION

Inventor： Koji Sasaki ,  Hiroshi Sugata ,  Naoki Hanashima

IPC: G02F1/13357 ,  G02B1/04 ,  G02B3/00 ,  F21V8/00 ,  G02F1/1335

Abstract: There is provided a novel and improved optical body, method for manufacturing an optical body, light-emitting apparatus, and display apparatus for amusement equipment capable of improving emitted luminance and transparency, the optical body including: a base material; and a light extraction section, formed on at least one surface of the base material, that extracts internally propagated light incident inside the base material from a side face of the base material to an outside of the base material. The light extraction section includes a concave-convex structure in which at least one of concavities and convexities has a frustum shape, a fill ratio of the concave-convex structure is 15% or greater, and a light transmittance is 50% or greater.

公开(公告)号：US10732335B2

公开(公告)日：2020-08-04

申请号：US14904337

申请日：2014-07-11

Applicant: Dexerials Corporation

Inventor： Akio Takada ,  Eiji Takahashi ,  Nobuyuki Koike ,  Koji Sasaki

IPC: G02B5/30 ,  G02B5/18 ,  G02F1/1335

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.

公开(公告)号：US10656318B2

公开(公告)日：2020-05-19

申请号：US16145937

申请日：2018-09-28

Applicant: DEXERIALS CORPORATION

Inventor： Naoki Hanashima ,  Koji Sasaki

IPC: G02B6/00 ,  F21V8/00 ,  G02B3/00 ,  G09F13/18

Abstract: There is provided an optical body including: a base material; and a light extraction unit that is formed on a surface of the base material and that extracts, to an outside of the base material, internally propagating light that is injected in an inside of the base material from a side surface of the base material. The light extraction unit is formed of a convex microlens array, and a maximum inclination angle of the convex microlens array substantially coincides with a maximum propagation angle of the internally propagating light.

公开(公告)号：US09678261B2

公开(公告)日：2017-06-13

申请号：US15248659

申请日：2016-08-26

Applicant: DEXERIALS CORPORATION

Inventor： Koji Sasaki ,  Akio Takada

IPC: G02B5/30 ,  G02B1/14 ,  G02F1/1335 ,  G02B5/00

CPC classification number: G02B5/3058 ,  G02B1/14 ,  G02B5/003 ,  G02B5/3025 ,  G02B5/3041 ,  G02F1/133528 ,  G02F2001/133548

Abstract: To provide an inorganic polarizing plate which, when used in structures having different used wavelength bands, can reduce reflectance by using a common structure, making it possible to achieve a predetermined light extinction ratio. The inorganic polarizing plate has a substrate that is transparent to light in a used bandwidth, a reflective layer that is composed of grids that are formed on one surface of the substrate with a pitch that is smaller than a wavelength of light in the used bandwidth, a dielectric layer that is stacked on the reflective layer, and an absorbing layer containing FeSi fine particles.

公开(公告)号：US09453954B2

公开(公告)日：2016-09-27

申请号：US14952494

申请日：2015-11-25

Applicant: DEXERIALS CORPORATION

Inventor： Koji Sasaki ,  Akio Takada

IPC: G02B5/30 ,  G02B1/14 ,  G02B5/00

CPC classification number: G02B5/3058 ,  G02B1/14 ,  G02B5/003 ,  G02B5/3025 ,  G02B5/3041 ,  G02F1/133528 ,  G02F2001/133548

Abstract: To provide an inorganic polarizing plate which, when used in structures having different used wavelength bands, can reduce reflectance by using a common structure, making it possible to achieve a predetermined light extinction ratio. The inorganic polarizing plate has a substrate that is transparent to light in a used bandwidth, a reflective layer that is composed of grids that are formed on one surface of the substrate with a pitch that is smaller than a wavelength of light in the used bandwidth, a dielectric layer that is stacked on the reflective layer, and an absorbing layer containing FeSi fine particles.

Abstract translation: 提供一种无机偏光板，当在具有不同的使用波长带的结构中使用时，可以通过使用共同的结构来降低反射率，从而可以获得预定的消光比。 无机偏光板具有在使用带宽中对光透明的基板，由在被使用的带宽中的光的波长小于基板的一个表面上形成的格栅构成的反射层， 层叠在反射层上的介电层和含有FeSi微粒的吸收层。

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.

公开(公告)号：US10042176B2

公开(公告)日：2018-08-07

申请号：US14892935

申请日：2014-06-27

Applicant: DEXERIALS CORPORATION

Inventor： Koji Sasaki ,  Masatoshi Sasaki ,  Nobuyuki Koike ,  Akio Takada ,  Katsuhiro Shindo ,  Toshiaki Sugawara ,  Kouichi Miyagi ,  Masahiro Oowada

IPC: G02B27/28 ,  G02B1/14 ,  G02B5/30 ,  C09J183/04 ,  G02B5/04

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, inorganic half-wave plates provided selectively on the output surface of a polarizing beam-splitter array have obliquely deposited layers comprising a dielectric material and the side surfaces of said obliquely deposited layers are covered by protective films.

公开(公告)号：US09488762B2

公开(公告)日：2016-11-08

申请号：US13767511

申请日：2013-02-14

Applicant: DEXERIALS CORPORATION

Inventor： Koji Sasaki

IPC: G02B5/30 ,  G02B1/11

CPC classification number: G02B5/3025 ,  G02B1/11 ,  G02B5/3058

Abstract: Provided is a polarizing element in which a desired polarization characteristics are achieved and the transmissivity is also good. The polarizing element comprises: a substrate transparent to light having a bandwidth to be used; and a grid pattern made of a translucent material and configured such that a plurality of projection portions continuous in one in-plane direction of said substrate are formed on a surface of the substrate at a pitch smaller than a wavelength of light having a bandwidth to be used, wherein each of the projection portions includes a base portion with a rectangular cross-section and a tapered surface portion formed at a top of the base portion, a fine particle layer made of an inorganic material is laminated on at least one surface of said tapered surface portion, and the fine particle layer does not protrude over a side face of the base portion.

Abstract translation: 提供了其中实现期望的极化特性并且透射率也良好的偏振元件。 偏振元件包括：对具有要使用的带宽的光透明的基板; 以及由半透明材料制成的网格图案，并且构造成使得在基板的表面上以比具有带宽的光的波长小的间距形成在所述基板的一个面内方向上连续的多个突出部分 其特征在于，其中每个所述突出部分包括具有矩形横截面的基部和形成在所述基部的顶部的锥形表面部分，由所述无机材料制成的细微粒层层压在所述基底部的至少一个表面上 锥形表面部分，并且细颗粒层不在基部的侧面上突出。