公开(公告)号：US20210003746A1

公开(公告)日：2021-01-07

申请号：US16963970

申请日：2019-01-21

Applicant: Dexerials Corporation

Inventor： Kazuyuki Shibuya ,  Katsuhiro Shindo ,  Naoki Hanashima ,  Yusuke Matsuno

IPC: G02B3/00 ,  G02B27/48

Abstract: In order to provide an optical device and a diffusion plate which has high transmittance and is capable of reducing speckle noise, the present it is a diffusion plate 1 in which a plurality of microlens cells 11 are arranged on both surfaces of a transparent substrate 10, the diffusion plate 1 having a first microlens array 12A which is formed on one surface of the transparent substrate 10 and comprises a plurality of concave or convex microlens cells 11, and a second microlens array 12B which is formed on the other surface on the reverse side from the one surface and comprises a plurality of concave or convex microlens cells 11, and the diffusion plate 1 being configured so that light emitted from the microlens cells 11 constituting the first microlens array 12A is incident on the microlens cells 11 constituting the second microlens array 12B.

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：US12061348B2

公开(公告)日：2024-08-13

申请号：US16963970

申请日：2019-01-21

Applicant: Dexerials Corporation

Inventor： Kazuyuki Shibuya ,  Katsuhiro Shindo ,  Naoki Hanashima ,  Yusuke Matsuno

IPC: G02B3/00 ,  G02B27/48

CPC classification number: G02B3/0068 ,  G02B3/0043 ,  G02B27/48

Abstract: In order to provide an optical device and a diffusion plate which has high transmittance and is capable of reducing speckle noise, the present it is a diffusion plate 1 in which a plurality of microlens cells 11 are arranged on both surfaces of a transparent substrate 10, the diffusion plate 1 having a first microlens array 12A which is formed on one surface of the transparent substrate 10 and comprises a plurality of concave or convex microlens cells 11, and a second microlens array 12B which is formed on the other surface on the reverse side from the one surface and comprises a plurality of concave or convex microlens cells 11, and the diffusion plate 1 being configured so that light emitted from the microlens cells 11 constituting the first microlens array 12A is incident on the microlens cells 11 constituting the second microlens array 12B.