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Title:
SURFACE LIGHT SOURCE DEVICE AND LIGHT SOURCE UNIT
Document Type and Number:
WIPO Patent Application WO/2007/094426
Kind Code:
A1
Abstract:
A surface light source device (50) wherein light luminance nonuniformity and color nonuniformity are suppressed. The surface light source (50) is provided with a lenticular lens sheet (14-1) having a plurality of unit lenses (141-1) protruding to a projecting side, and a light source unit (100) having a plurality of kinds of light emitting sources (101) having different emission wavelength distributions. The unit lenses are arranged at substantially constant intervals along one direction. The light emitting sources of each kind are arranged at substantially constant intervals along one direction. The arrangement intervals of each kind of the light emitting sources along one direction are substantially equal.

Inventors:
GOTO, Masahiro (1-1, Ichigaya-kaga-cho 1-chome, Shinjuku-k, Tokyo 01, 1628001, JP)
Application Number:
JP2007/052765
Publication Date:
August 23, 2007
Filing Date:
February 15, 2007
Export Citation:
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Assignee:
DAI NIPPON PRINTING CO., LTD. (1-1 Ichigaya-kaga-cho 1-chome, Shinjuku-ku Tokyo, 01, 1628001, JP)
大日本印刷株式会社 (〒01 東京都新宿区市谷加賀町一丁目1番1号 Tokyo, 1628001, JP)
International Classes:
F21S2/00; F21S8/04; F21V19/00; F21V23/04; G02F1/13357; H01L33/00; F21Y101/02
Attorney, Agent or Firm:
YOSHITAKE, Kenji et al. (Kyowa Patent & Law Office, Room 323 Fuji Bldg., 2-3, Marunouchi 3-chom, Chiyoda-ku Tokyo 05, 1000005, JP)
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