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Patent Searching and Data


Title:
ILLUMINATION DEVICE AND DISPLAY DEVICE
Document Type and Number:
WIPO Patent Application WO/2013/005559
Kind Code:
A1
Abstract:
Provided is an illumination device capable of improved illumination quality. This backlight unit (illumination device) (20) is provided with a light source, and a light guide (23) which guides light from the light source. The light guide (23) includes an incidence surface (light incidence surface (23a)) where light from the light source is incident, an end region (22b) on the light source side, and a light emitting region (22a) arranged on the side of the end region (22b) opposite of the light source. Prisms (23e) which reflect the light entering the light guide (23) are provided in the light emitting region of the light guide (23). These prisms (23e) are configured to begin from a position (L1) separated by a prescribed distance (D30) from the light incidence surface (23a) in the end region (22b).

Inventors:
YUKI RYUZO
ISHIDA TAKESHI
Application Number:
PCT/JP2012/065364
Publication Date:
January 10, 2013
Filing Date:
June 15, 2012
Export Citation:
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Assignee:
SHARP KK (JP)
YUKI RYUZO
ISHIDA TAKESHI
International Classes:
F21S2/00; G02F1/13357; F21Y101/02
Domestic Patent References:
WO2010100784A12010-09-10
Foreign References:
JP2009176593A2009-08-06
JP2010217637A2010-09-30
JP2005129271A2005-05-19
JP2009070644A2009-04-02
JP2009053377A2009-03-12
Attorney, Agent or Firm:
SANO SHIZUO (JP)
Shizuo Sano (JP)
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Claims: