公开(公告)号：US20220082750A1

公开(公告)日：2022-03-17

申请号：US17535744

申请日：2021-11-26

Applicant: National Institute of Advanced Industrial Science and Technology ,  Mitsubishi Gas Chemical Trading, Inc.

Inventor： Ryohei HOKARI ,  Kazuma KURIHARA ,  Kyohei TAKAKUWA ,  Akitaka YAMAMOTO ,  Yusuke YAMAGUCHI

IPC: G02B5/30

Abstract: A wire-grid polarizer includes metal reflectors which are embedded in a large number of grooves formed in a one-dimensional grid pattern in the same direction and with the same period in the front surface of a transparent sheet, wherein the average width (a) of the metal reflectors is 200 nm or less, the ratio (b/a) of the average thickness (b) of the metal reflectors from the front side of the sheet to the tip in the backward direction to the above average width (a) is 4 to 25, in any cross-section perpendicular to the surface of the sheet, the shape of each of the metal reflectors in the vicinity of the tip in the thickness direction is such that it gradually becomes thinner in a linear or smoothly curved shape toward the tip, and the ratio of the average length (c) toward the tip of portions that gradually become thinner toward the tip to the above average width (a) is 1.2 or more.

公开(公告)号：US20180304660A1

公开(公告)日：2018-10-25

申请号：US15767937

申请日：2016-10-17

Applicant: National Institute of Advanced Industrial Science and Technology

Inventor： Ryohei HOKARI ,  Kazuma KURIHARA ,  Naoki TAKADA

IPC: B41M1/26 ,  B41M5/52 ,  B32B27/28

CPC classification number: B41M1/26 ,  B29C59/02 ,  B32B27/28 ,  B32B2398/20 ,  B41M1/12 ,  B41M1/30 ,  B41M5/52

Abstract: In the present invention, an uneven structure is formed on a surface of a base material to be printed to which ink is applied, and the pitch, the shape in plan view, and the depth of recesses in the uneven structure are determined on the basis of the physical properties (specific weight, viscosity, and contact angle) of ink to be used, in accordance with a printing pattern and a required printing precision. The amount of ink filling the recesses is thereby controlled, and high-precision is enabled at low cost without changing the printing process itself.

公开(公告)号：US20220082751A1

公开(公告)日：2022-03-17

申请号：US17535748

申请日：2021-11-26

Applicant: National Institute of Advanced Industrial Science and Technology

Inventor： Ryohei HOKARI ,  Kazuma KURIHARA

IPC: G02B5/30

Abstract: In this disclosure, there is provided a polarization element comprising a substrate having a predetermined light transmittance in a predetermined wavelength region and a plurality of polarization portions having a wire grid structure on the main surface of the above substrate, wherein the plurality of polarization portions are arranged to ensure that the ratio of the total area of the polarization portions to the predetermined area of the main surface gradually changes along a predetermined direction so that at least one of light transmittance and polarization degree gradually changes in the predetermined direction on the main surface of the substrate. A method for manufacturing the polarization element is also disclosed.

公开(公告)号：US20210162788A1

公开(公告)日：2021-06-03

申请号：US17118493

申请日：2020-12-10

Applicant: NATIONAL INSTITUTE OF ADVANCED INDUSTRIAL SCIENCE AND TECHNOLOGY

Inventor： Ryohei HOKARI ,  Kazuma KURIHARA ,  Naoki TAKADA

IPC: B41M1/26 ,  B29C59/02 ,  G03F7/00 ,  B41M5/52 ,  B32B27/28

Abstract: A method for manufacturing an optical element comprising a fine pattern over a substrate. Further, the method comprises: preparing the substrate comprising an uneven structure on a surface of the substrate, the uneven structure comprising recesses for the fine pattern; applying functional ink to the recesses; obtaining the optical element comprising the fine pattern made from the functional ink in the recesses.