Title:
ILLUMINATION DEVICE AND DISPLAY DEVICE
Document Type and Number:
WIPO Patent Application WO/2012/026164
Kind Code:
A1
Abstract:
Provided is an illumination device in which incidence efficiency can be improved. The backlight unit (illumination device) (50) includes: an LED (22) as a light source; and a light guide element (30) that has a side end surface (31 (31a, 31b)) having an incident surface (32) on which the light from the LED (22) is incident, the incident light being guided inside the light guide element. In regard to the height direction (Z direction) of the light guide element (30), the incident surface (32) of the light guide element (30) is formed into a shape conforming to the light distribution characteristics (the spatial distribution of luminous intensity (R)) of the LED (22).
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Inventors:
CHOH SHIYOSHI
Application Number:
PCT/JP2011/061390
Publication Date:
March 01, 2012
Filing Date:
May 18, 2011
Export Citation:
Assignee:
SHARP KK (JP)
CHOH SHIYOSHI
CHOH SHIYOSHI
International Classes:
F21S2/00; G02F1/13357; F21Y101/02
Domestic Patent References:
| WO2010016501A1 | 2010-02-11 | |||
| WO2010038522A1 | 2010-04-08 |
Foreign References:
| JP2008053013A | 2008-03-06 | |||
| JP2006526796A | 2006-11-24 |
Attorney, Agent or Firm:
SANO SHIZUO (JP)
Shizuo Sano (JP)
Shizuo Sano (JP)
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Claims: