Title:
LASER LIGHT SOURCE, PLANAR LIGHT SOURCE, AND LIQUID CRYSTAL DISPLAY DEVICE
Document Type and Number:
WIPO Patent Application WO/2008/029892
Kind Code:
A1
Abstract:
A laser light source drives a light emitting element (101) by a drive current on which
a high frequency is superimposed and introduces the emitted light to a polarizing element
(102) having a wavelength dependency. Since the polarizing element (102) can
emit the incident laser light output in different directions for respective wavelengths,
it is possible to change the spread angle of the laser beam when emitting the polarizing
element and reduce the speckle.
Inventors:
KIMURA, Syunsuke (())
Application Number:
JP2007/067435
Publication Date:
March 13, 2008
Filing Date:
September 06, 2007
Export Citation:
Assignee:
MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD. (1006, Oaza Kadoma Kadoma-sh, Osaka 01, 5718501, JP)
松下電器産業株式会社 (〒01 大阪府門真市大字門真１００６番地 Osaka, 5718501, JP)
松下電器産業株式会社 (〒01 大阪府門真市大字門真１００６番地 Osaka, 5718501, JP)
International Classes:
H01S5/062; F21V8/00; G02F1/13357
Attorney, Agent or Firm:
WASHIDA, Kimihito (5th Floor, Shintoshicenter Bldg.24-1, Tsurumaki 1-chome,Tama-sh, Tokyo 34, 2060034, JP)