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Title:
LIGHT-EMITTING DEVICE, SURFACE LIGHT SOURCE, AND LIQUID CRYSTAL DISPLAY DEVICE
Document Type and Number:
WIPO Patent Application WO/2011/114608
Kind Code:
A1
Abstract:
The disclosed light-emitting device (1) emits light with the optical axis (A) located at the center, and includes: a light source (2); and a lens (3) that radially spreads out the light emitted from the light source (2). The light source (2) has a light-emitting surface (21) extending in the X direction which is orthogonal to the optical axis (A). The lens (3) is structured in a manner such that the refractive power in the Y direction, which is orthogonal to the X direction, is larger than the refractive power in the X direction. For example, the incident surface (31) of the lens (3) includes an anamorphic curved surface having mutually-different curved shapes in the X direction and the Y direction.

Inventors:
IIYAMA, Tomoko (())
飯山智子 (())
YOSHIKAWA, Motonobu (())
Application Number:
JP2011/000326
Publication Date:
September 22, 2011
Filing Date:
January 21, 2011
Export Citation:
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Assignee:
PANASONIC CORPORATION (1006, Oaza Kadoma Kadoma-sh, Osaka 01, 〒5718501, JP)
パナソニック株式会社 (〒01 大阪府門真市大字門真1006番地 Osaka, 〒5718501, JP)
IIYAMA, Tomoko (())
飯山智子 (())
International Classes:
F21S2/00; F21V5/00; F21V5/04; F21V7/22; G02B13/08; G02F1/13357; H01L33/58; F21Y101/02
Foreign References:
JP2009123803A2009-06-04
JP2006258899A2006-09-28
Attorney, Agent or Firm:
KAMADA, Koichi et al. (8th Fl, UMEDA PLAZA BLDG. ANNEX 4-3-25, Nishitenma, Kita-ku, Osaka-sh, Osaka 47, 〒5300047, JP)
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Claims: