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1. (WO2014203725) LIGHTING APPARATUS

Pub. No.:    WO/2014/203725    International Application No.:    PCT/JP2014/064723
Publication Date: Thu Dec 25 00:59:59 CET 2014 International Filing Date: Wed Jun 04 01:59:59 CEST 2014
IPC: F21S 2/00
F21S 8/04
F21Y 101/02
Applicants: KONICA MINOLTA, INC.
コニカミノルタ株式会社
Inventors: SHOBU Takahiko
菖蒲 鷹彦
Title: LIGHTING APPARATUS
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.