Title:
照明装置
Document Type and Number:
Japanese Patent JP5140368
Kind Code:
B2
Abstract:
Provided is a lighting device having high luminance in-plane uniformity without a dark part occurring at a connecting part between surface light source panels.
The lighting device (1) is provided with a plurality of surface light source panel (2), and a plurality of light diffusion passive reflectors (3) disposed at the light-emitting side of the surface light source panel (2). In the light diffusion passive reflector (3), a rectangular-shaped bottom surface is disposed on a light emitting region of the surface light source panel (2), and a light-emitting surface (3a) has substantially the same size as a planar outline of the surface light source panel (2), and a side surface (3c) is formed to incline diagonally outward towards the light-emitting surface (3a) from the bottom surface. The light diffusion passive reflectors (3) which are mutually adjoining are disposed to contact with each other without a gap in between, and are disposed so that the light-emitting surface (3a) is continuously arranged.
Inventors:
Takamura Makoto
Masashi Tanaka
Masashi Tanaka
Application Number:
JP2007258026A
Publication Date:
February 06, 2013
Filing Date:
October 01, 2007
Export Citation:
Assignee:
ROHM Co., Ltd.
International Classes:
F21S8/04; F21V3/00; F21V3/02; F21V21/005; H01L51/50; H05B33/12; H05B33/24; F21Y105/00
Domestic Patent References:
| JP2003215350A | ||||
| JP2006210119A | ||||
| JP54021487U |
Attorney, Agent or Firm:
Hidekazu Miyoshi
Keishin Terayama
Hiroyuki Miyoshi
Ichitaro Ito
Keishin Terayama
Hiroyuki Miyoshi
Ichitaro Ito