Title:
LIGHTING APPARATUS
Document Type and Number:
WIPO Patent Application WO/2014/203725
Kind Code:
A1
Abstract:
Provided is a lighting apparatus capable of changing illuminance distribution, while being thin, simple and low cost.
A first main surface or a second main surface (12) of a light guide plate (1) is provided with an optical path deflecting means (16), the optical path deflecting means (16) is configured from a plurality of parallel V-grooves, and illuminance distribution can be changed merely by turning on/off an LED (2A) and an LED (2B), which have light inputted thereto from a first input surface (13) and a second input surface (14) of the light guide plate (1), respectively, said first input surface and the second input surface being different from each other. Consequently, freedom degree of lighting is improved, while being simple and low cost.
Inventors:
SHOBU TAKAHIKO (JP)
Application Number:
PCT/JP2014/064723
Publication Date:
December 24, 2014
Filing Date:
June 03, 2014
Export Citation:
Assignee:
KONICA MINOLTA INC (JP)
International Classes:
F21S2/00; F21S8/04; F21Y101/02
Foreign References:
| JP2013517590A | 2013-05-16 | |||
| JP2003519810A | 2003-06-24 | |||
| JP2013080120A | 2013-05-02 | |||
| JP2005285724A | 2005-10-13 | |||
| JP2007115439A | 2007-05-10 | |||
| JP2005251720A | 2005-09-15 | |||
| JPH0817209A | 1996-01-19 |
Attorney, Agent or Firm:
TAMURA Keijiro et al. (JP)
Keijichiro Tamura (JP)
Keijichiro Tamura (JP)
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