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Title:
LUMINAIRE
Document Type and Number:
Japanese Patent JP2017084624
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a luminaire which can illuminate an illuminated region by alleviating variations in illuminance in a spot region on a light diffusing element and by controlling a light distribution pattern with high accuracy.SOLUTION: A luminaire 10 includes: a light diffusing element 60 having a plurality of element diffusing elements 65 for diffusing incident light; a coherent light source 15 for emitting coherent light; a lens array 25 for adjusting an optical path of light source light; an afocal optical system 30 provided in an optical path from the lens array to the light diffusing element, and capable of reducing a luminous flux; a light conversing element 50 provided in the optical path from the afocal optical system to the light diffusing element; and a scanner 40 for varying an incident position of the light source light on the light diffusing element by adjusting a travelling direction of the light source light. Each element diffusing element diffuses the light source light, and illuminates an element illuminated region Zp corresponding to the element diffusing element.SELECTED DRAWING: Figure 2

Inventors:
NISHIO SHUMPEI
KURASHIGE MAKIO
Application Number:
JP2015212255A
Publication Date:
May 18, 2017
Filing Date:
October 28, 2015
Export Citation:
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Assignee:
DAINIPPON PRINTING CO LTD
International Classes:
F21S2/00; F21V5/04; F21V9/00; F21V14/04; F21V23/00; H01S5/022
Attorney, Agent or Firm:
Hiroyuki Nagai
Hirohito Katsunuma
Yukihiro Hotta



 
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