发明授权
- 专利标题: Reflective sheet
-
申请号: US17214076申请日: 2021-03-26
-
公开(公告)号: US11789185B2公开(公告)日: 2023-10-17
- 发明人: Makoto Ishiguro , Hideki Kaneiwa , Nobuhiko Ichihara , Akira Yamamoto , Ryuji Saneto , Michio Nagai
- 申请人: FUJIFILM Corporation
- 申请人地址: JP Tokyo
- 专利权人: FUJIFILM Corporation
- 当前专利权人: FUJIFILM Corporation
- 当前专利权人地址: JP Tokyo
- 代理机构: Birch, Stewart, Kolasch & Birch, LLP
- 优先权: JP 18183925 2018.09.28
- 主分类号: G02B5/02
- IPC分类号: G02B5/02
摘要:
Provided is a reflective sheet that includes a reflective layer having a wide reflection wavelength range, excellent diffusion reflection properties, and inconspicuous defects. The reflective sheet includes a plurality of reflective layers that are laminated, the reflective layers being obtained by immobilizing a cholesteric liquid crystalline phase, in a cross-section of the reflective layer observed with a scanning electron microscope, at least a part of bright portions and dark portions derived from the cholesteric liquid crystalline phase has a flapping structure, a helical pitch in one or more reflective layers changes in a thickness direction, and a thickness of a reflective layer that is formed on a surface other than a surface of the reflective layer is less than those of other reflective layers.
公开/授权文献
- US20210223445A1 REFLECTIVE SHEET 公开/授权日:2021-07-22
信息查询