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Patent Searching and Data


Title:
WINDOW SERVING AS ILLUMINATION
Document Type and Number:
WIPO Patent Application WO/2019/107278
Kind Code:
A1
Abstract:
A window serving as illumination, having: a plate-shaped transparent substrate having two main surfaces; and a variable transmittance film installed on at least a part of at least one of the main surfaces of the transparent substrate. When the window serving as illumination illuminates, illumination light, which is emitted from a light source, made incident on an end part of the transparent substrate, guided through the interior of the transparent substrate, and made incident on the variable transmittance film, is scattered and emitted from the two main surfaces of the transparent substrate, causing the transparent substrate to function as illumination. When the window serving as illumination does not illuminate, the transparent substrate functions as a light-transmitting window. When the window serving as illumination illuminates, such as at night, illumination light that has been emitted from the light source, made to impinge on the end part of the plate-shaped transparent substrate, and guided through the interior of the transparent substrate can be efficiently emitted from both surfaces. When the window serving as illumination does not illuminate, such as at mid-day, said window can be made to function as a high-transparency window.

Inventors:
USAMI Yoshihisa (577 Ushijima, Kaisei-machi, Ashigara-kami-gu, Kanagawa 77, 〒2588577, JP)
ICHIHASHI Mitsuyoshi (577 Ushijima, Kaisei-machi, Ashigara-kami-gu, Kanagawa 77, 〒2588577, JP)
Application Number:
JP2018/043228
Publication Date:
June 06, 2019
Filing Date:
November 22, 2018
Export Citation:
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Assignee:
FUJIFILM CORPORATION (26-30, Nishiazabu 2-chome Minato-k, Tokyo 20, 〒1068620, JP)
International Classes:
F21S11/00; E06B9/24; F21V33/00; G02B5/02
Attorney, Agent or Firm:
ITOH Hideaki et al. (XYMAX Iwamoto-cho Building 6F, 3-3 Iwamoto-cho 2-chome, Chiyoda-k, Tokyo 32, 〒1010032, JP)
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