Title:
LIGHT GUIDE BODY AND LIGHTING SYSTEM
Document Type and Number:
Japanese Patent JP2015179579
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a light guide body capable of actualizing high luminaire efficiency, and to provide a lighting system using the same.SOLUTION: The light guide body in this embodiment includes an introduction part having an incident surface and a reflection surface opposed to the incident surface, a diffusion part having a first surface provided on the side of the reflection surface and a second surface provided on the side of the incident surface and opposed to the first surface, a first point located on a boundary between the reflection surface and the first surface, and a second point located on the incident surface. The center of curvature of the first surface at the first point is a third point. An expression (4) described in a first embodiment is satisfied, where n is the refraction factor of the light guide body, K is the curvature of the first surface at the first point, and D is a distance between the second point and the third point.
More Like This:
| JP2005292546 | LIQUID CRYSTAL DISPLAY DEVICE OF LOW POWER CONSUMPTION |
| JP2007220369 | LIGHTING SYSTEM AND DISPLAY DEVICE EQUIPPED WITH IT |
| JP4647218 | Display device |
Inventors:
ONO HIROSHI
KATO MITSUAKI
TAKAMATSU TOMONAO
KATO MITSUAKI
TAKAMATSU TOMONAO
Application Number:
JP2014055651A
Publication Date:
October 08, 2015
Filing Date:
March 18, 2014
Export Citation:
Assignee:
TOSHIBA CORP
International Classes:
F21V8/00; F21S2/00; F21S8/04; G02B6/42; H01L33/00
Attorney, Agent or Firm:
Kurata Masatoshi
Yoshihiro Fukuhara
Nobuhisa Nogawa
Takashi Mine
Naoki Kono
Katsu Sunagawa
Morisezo Iseki
Tadashi Inoue
Tatsushi Sato
Takashi Okada
Mihoko Horiuchi
Yoshihiro Fukuhara
Nobuhisa Nogawa
Takashi Mine
Naoki Kono
Katsu Sunagawa
Morisezo Iseki
Tadashi Inoue
Tatsushi Sato
Takashi Okada
Mihoko Horiuchi