公开(公告)号：US20240069378A1

公开(公告)日：2024-02-29

申请号：US18270124

申请日：2022-03-07

Applicant: DEXERIALS CORPORATION

Inventor： Tomu TAKEDA ,  Hideto SAGAWA

IPC: G02F1/1335 ,  G02B5/30

CPC classification number: G02F1/133548 ,  G02B5/3058

Abstract: An optical device capable of achieving desired polarization properties including a light source, incident-side polarizing element, optical modulating element, emission-side first polarizing element, and emission-side second polarizing element, the first and second polarizing elements each have a wire-grid structure and include a plurality of convex portions arranged on a transparent substrate and spaced apart from each other at a pitch shorter than the wavelength of light in the light source, the transmission axis of the first polarizing element relative to the transmission axis of the incident-side polarizing element is within ±8.5°, and the convex portions of the second polarizing element are lattice-shaped extending in a predetermined direction and include, in order from the transparent substrate side, a reflection layer, dielectric layer, and absorption layer, the rotation angle of the absorption axis of the second polarizing element relative to the absorption axis of the incident-side polarizing element is within ±0.7°.

公开(公告)号：US20190250313A1

公开(公告)日：2019-08-15

申请号：US16271965

申请日：2019-02-11

Applicant: DEXERIALS CORPORATION

Inventor： Kazuyuki SHIBUYA ,  Hideto SAGAWA ,  Takahiro KIMURA ,  Naoki HANASHIMA

IPC: G02B5/02 ,  G02B3/00 ,  G02B1/115 ,  G03B21/62

CPC classification number: G02B5/0221 ,  G02B1/115 ,  G02B3/0043 ,  G02B5/0252 ,  G02B5/0294 ,  G03B21/62

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

公开(公告)号：US20180299602A1

公开(公告)日：2018-10-18

申请号：US15769155

申请日：2016-10-24

Applicant: Dexerials Corporation

Inventor： Tomu TAKEDA ,  Hideto SAGAWA

IPC: G02B5/30 ,  G02F1/1335 ,  B29D11/00

Abstract: Provided is a polarizing element having a wire grid structure. The polarizing element includes a transparent substrate (11) and grid-shaped protrusions (10) that are arranged on the transparent substrate (11) at a smaller pitch than a wavelength of operating band light and that extend in a specific direction. The grid-shaped protrusions (10) include a reflection layer (12) formed on the transparent substrate (11). The reflection layer (12) includes a metal layer (15) and an oxide layer (16) that covers a side surface of the metal layer (15) as viewed in the specific direction and is formed from an oxide of a constituent metal of the metal layer (15).