Title:
ILLUMINATION DEVICE
Document Type and Number:
WIPO Patent Application WO/2017/150456
Kind Code:
A1
Abstract:
An illumination device (1) is provided with a light source (2) and an optical element (3). The light source (2) emits light. The optical element (3) receives incident light and radiates the incident light asymmetrically in relation to an optical axis (C) of the light source (2). The optical element (3) includes a first incident surface (4b) on which light is incident, and a reflecting surface (6) that reflects light. The light that reaches the first incident surface (4b) from the light source (2) includes a first light (L5) that is transmitted through the first incident surface (4b), and a second light (L6) reflected by the first incident surface (4b). On the optical path of the second light (L6), the optical element (3) is provided with a diffusion part for diffusing said second light.
Inventors:
YAMADA AKIHIRO (JP)
YAMAZUMI MITSUHIRO (JP)
OSHIMA RITSUYA (JP)
OKUMURA SHINICHIRO (JP)
YAMAZUMI MITSUHIRO (JP)
OSHIMA RITSUYA (JP)
OKUMURA SHINICHIRO (JP)
Application Number:
PCT/JP2017/007516
Publication Date:
September 08, 2017
Filing Date:
February 27, 2017
Export Citation:
Assignee:
MITSUBISHI ELECTRIC CORP (JP)
MITSUBISHI ELECTRIC LIGHTING CORP (JP)
MITSUBISHI ELECTRIC LIGHTING CORP (JP)
International Classes:
F21V5/08; F21S2/00; F21S8/04; F21V5/04; G02B5/00; F21Y115/10
Domestic Patent References:
| WO2013190801A1 | 2013-12-27 |
Foreign References:
| JP2012028619A | 2012-02-09 | |||
| JP2014524105A | 2014-09-18 | |||
| JP2011228241A | 2011-11-10 | |||
| JP2007005218A | 2007-01-11 |
Attorney, Agent or Firm:
MURAKAMI, Kanako et al. (JP)
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