Invention Grant
- Patent Title: Optical member, optical element, liquid crystal display device, and near-to-eye optical member
-
Application No.: US15672727Application Date: 2017-08-09
-
Publication No.: US10386569B2Publication Date: 2019-08-20
- Inventor: Yujiro Yanai , Yukito Saitoh , Akira Yamamoto , Nobuhiko Ichihara , Daisuke Kashiwagi , Michio Nagai
- Applicant: FUJIFILM Corporation
- Applicant Address: JP Tokyo
- Assignee: FUJIFILM Corporation
- Current Assignee: FUJIFILM Corporation
- Current Assignee Address: JP Tokyo
- Agency: Birch, Stewart, Kolasch & Birch, LLP
- Priority: JP2015-024418 20150210
- Main IPC: F21V8/00
- IPC: F21V8/00 ; G02B5/02 ; G02B5/30 ; G02F1/137 ; G02F1/1335 ; G02F1/13357

Abstract:
Provided is an optical member having a high brightness, a low haze, and a small color change, an optical element, a liquid crystal display device, and a near-to-eye optical member. The optical member includes a plurality of cholesteric liquid crystal dots that are provided on a substrate, in which a shape of each of the dots is a hemispherical or elliptical hemispherical shape in which the substrate side is planar, a conical or elliptical conical shape in which the substrate side is set as the bottom, or a shape in which a plurality of shapes selected from the shapes are laminated, the cholesteric liquid crystal dot has a reflection center wavelength with respect to visible light, the cholesteric structure of the dot has a stripe pattern including bright portions and dark portions in a cross-sectional view of the dot when observed with a scanning electron microscope, the dot includes a portion having a height which continuously increases to a maximum height in a direction moving from an end portion of the dot to the center of the dot, and in the portion, an angle between a normal line perpendicular to a line, which is formed using a first dark portion from a surface of the dot opposite to the substrate, and the surface of the dot is in a range of 70° to 90°.
Public/Granted literature
- US20170336555A1 OPTICAL MEMBER, OPTICAL ELEMENT, LIQUID CRYSTAL DISPLAY DEVICE, AND NEAR-TO-EYE OPTICAL MEMBER Public/Granted day:2017-11-23
Information query