公开(公告)号：US20190391320A1

公开(公告)日：2019-12-26

申请号：US16449751

申请日：2019-06-24

Applicant: Dexerials Corporation

Inventor： Masahiro Oowada

IPC: F21V8/00 ,  G02F1/1335

Abstract: Provided is a polarizing plate having high transmittance characteristics and high durability.A polarizing plate 1 with a wire grid structure includes a transparent substrate 10, and a grid-shaped projecting portion 11 which is arranged on the transparent substrate 10 at a pitch shorter than a wavelength of light in a used bandwidth and extends in a predetermined direction. The grid-shaped projecting portion 11 includes a reflection layer 12, a dielectric layer 13, and an absorption layer 14 in this order from the side of the transparent substrate 10. A protection layer 15 is provided on a surface of the grid-shaped projecting portion 11, and covers all of an upper surface and a side surface of the absorption layer 14 and all of a side surface of the dielectric layer 13, and at least a part of a side surface of the reflection layer 12. The protection layer 15 on the side surface of the reflection layer 12 is thinner than the protection layer 15 on the side surface of the absorption layer 14.

公开(公告)号：US20250020844A1

公开(公告)日：2025-01-16

申请号：US18711537

申请日：2022-12-26

Applicant: Dexerials Corporation

Inventor： Yusuke Matsuno ,  Masahiro Oowada

IPC: G02B5/30

Abstract: Provided is a wire grid polarizing element comprising: a transparent substrate; and latticed projections which are arrayed, on one-side surface of the transparent substrate, at a pitch shorter than the wavelength of light in a band to be used and extend in a prescribed direction. The latticed projections each include a reflection layer, a dielectric layer, and an absorption layer in the stated order from the transparent substrate side. The reflection layer contains an AlNd alloy.

公开(公告)号：US20190257982A1

公开(公告)日：2019-08-22

申请号：US16277001

申请日：2019-02-15

Applicant: Dexerials Corporation

Inventor： Masahiro Oowada

IPC: G02B1/18 ,  G02B1/11

Abstract: Provided are a fine structure which has water resistance, moisture resistance, and an antifouling property and achieves improvement in long-term reliability, a method for manufacturing the fine structure, and an optical instrument. A fine structure 1 includes: an element 2 having a lattice 12 formed at a pitch shorter than a wavelength of light in a used bandwidth on a transparent substrate 10; and a water-repellent layer 3 that covers a surface of the element 2, in which the water-repellent layer 3 has a silica layer 13 made of silica and a silane coupling layer 14 made of a silane coupling agent, in this order from a side of the element 2.

公开(公告)号：US11137535B2

公开(公告)日：2021-10-05

申请号：US16882859

申请日：2020-05-26

Applicant: Dexerials Corporation

Inventor： Masahiro Oowada

IPC: F21V8/00 ,  G02F1/1335

Abstract: Provided is a polarizing plate having high transmittance characteristics and high durability.
A polarizing plate 1 with a wire grid structure includes a transparent substrate 10, and a grid-shaped projecting portion 11 which is arranged on the transparent substrate 10 at a pitch shorter than a wavelength of light in a used bandwidth and extends in a predetermined direction. The grid-shaped projecting portion 11 includes a reflection layer 12, a dielectric layer 13, and an absorption layer 14 in this order from the side of the transparent substrate 10. A protection layer 15 is provided on a surface of the grid-shaped projecting portion 11, and covers all of an upper surface and a side surface of the absorption layer 14 and all of a side surface of the dielectric layer 13, and at least a part of a side surface of the reflection layer 12. The protection layer 15 on the side surface of the reflection layer 12 is thinner than the protection layer 15 on the side surface of the absorption layer 14.

公开(公告)号：US20200371277A1

公开(公告)日：2020-11-26

申请号：US16970480

申请日：2019-02-13

Applicant: Dexerials Corporation

Inventor： Masahiro Oowada

IPC: G02B5/30

Abstract: Provided is a polarizing plate 1 having a wire grid structure, the polarizing plate 1 comprising: a transparent substrate 10; and grid protrusions 11 provided over the transparent substrate 10, arranged in an array having a pitch shorter than a wavelength of light in a band to be used, and extending in a predetermined direction, the grid protrusions 11 having a reflective layer 13, a dielectric layer 14, and an absorptive layer 15 that are disposed in this order in a direction away from the transparent substrate 10, and the reflective layer 13 having a maximum width b that is smaller than each of a maximum width of the dielectric layer and a maximum width of the absorptive layer (grid width a). This makes it possible to provide a polarizing plate capable of controlling the wavelength dispersion of absorption axis reflectance more accurately.

公开(公告)号：US10705285B2

公开(公告)日：2020-07-07

申请号：US16449751

申请日：2019-06-24

Applicant: Dexerials Corporation

Inventor： Masahiro Oowada

IPC: F21V8/00 ,  G02F1/1335

Abstract: Provided is a polarizing plate having high transmittance characteristics and high durability.A polarizing plate 1 with a wire grid structure includes a transparent substrate 10, and a grid-shaped projecting portion 11 which is arranged on the transparent substrate 10 at a pitch shorter than a wavelength of light in a used bandwidth and extends in a predetermined direction. The grid-shaped projecting portion 11 includes a reflection layer 12, a dielectric layer 13, and an absorption layer 14 in this order from the side of the transparent substrate 10. A protection layer 15 is provided on a surface of the grid-shaped projecting portion 11, and covers all of an upper surface and a side surface of the absorption layer 14 and all of a side surface of the dielectric layer 13, and at least a part of a side surface of the reflection layer 12. The protection layer 15 on the side surface of the reflection layer 12 is thinner than the protection layer 15 on the side surface of the absorption layer 14.

公开(公告)号：US10962698B2

公开(公告)日：2021-03-30

申请号：US15542302

申请日：2016-01-07

Applicant: Dexerials Corporation

Inventor： Masahiro Oowada ,  Takahiro Kimura

IPC: G02B5/30 ,  G02F1/1335 ,  G03B21/14 ,  G03B21/20

Abstract: Provided is inorganic polarizing plate, including in order of reciting: a substrate transparent to light in a bandwidth used; a first dielectric layer; a plurality of linear metal layers; a plurality of linear second dielectric layers; and a plurality of linear light absorbing layers, wherein the plurality of linear metal layers are arranged on the first dielectric layer at intervals shorter than a wavelength of the light, the plurality of linear second dielectric layers are arranged on the plurality of linear metal layers, respectively, the plurality of linear light absorbing layers are arranged on the plurality of linear second dielectric layers, respectively, and the inorganic polarizing plate includes a water repelling layer at peripheral ends of the inorganic polarizing plate at which longer-direction ends of the linear metal layers are present, to cover longer-direction ends of the linear metal layers, linear second dielectric layers, and linear light absorbing layers.

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：US09964670B2

公开(公告)日：2018-05-08

申请号：US15031071

申请日：2014-10-17

Applicant: DEXERIALS CORPORATION

Inventor： Masahiro Oowada

IPC: G02B5/30 ,  G02B1/18 ,  G02B1/14 ,  C23C16/455 ,  C23C16/40

CPC classification number: G02B1/18 ,  C23C16/402 ,  C23C16/455 ,  G02B1/14 ,  G02B5/3083

Abstract: An inorganic optical element, including: a birefringent film 12 having a columnar structure; and a protective film 13 formed on the birefringent film 12, wherein a component of the protective film 13 enters a gap of the birefringent film 12.

公开(公告)号：US11874484B2

公开(公告)日：2024-01-16

申请号：US16970480

申请日：2019-02-13

Applicant: Dexerials Corporation

Inventor： Masahiro Oowada

IPC: G02B5/30 ,  G03B21/00 ,  G03B21/14

CPC classification number: G02B5/3058 ,  G03B21/006 ,  G03B21/14

Abstract: Provided is a polarizing plate 1 having a wire grid structure, the polarizing plate 1 comprising: a transparent substrate 10; and grid protrusions 11 provided over the transparent substrate 10, arranged in an array having a pitch shorter than a wavelength of light in a band to be used, and extending in a predetermined direction, the grid protrusions 11 having a reflective layer 13, a dielectric layer 14, and an absorptive layer 15 that are disposed in this order in a direction away from the transparent substrate 10, and the reflective layer 13 having a maximum width b that is smaller than each of a maximum width of the dielectric layer and a maximum width of the absorptive layer (grid width a). This makes it possible to provide a polarizing plate capable of controlling the wavelength dispersion of absorption axis reflectance more accurately.