Title:
LASER IMAGE PROJECTING DEVICE
Document Type and Number:
Japanese Patent JP2010044309
Kind Code:
A
Abstract:
To provide a laser image projecting device capable of heightening light utilization efficiency by reducing a speckle noise generated from coherency of a laser.
A light source 1 is vibrated by a vibration generation means 2 in order to reduce a speckle noise generated from coherency of the laser, and, while reducing with a speckle noise pattern averaged in time, a lens 5 is moved continuously and synchronously with vibration so as to correct deviation of an optical axis of the light source 1 generated by the vibration generation means 2, to thereby heighten the light utilization efficiency.
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Inventors:
FUJIWARA NAOKI
Application Number:
JP2008209658A
Publication Date:
February 25, 2010
Filing Date:
August 18, 2008
Export Citation:
Assignee:
PANASONIC CORP
International Classes:
G03B21/00; H01S3/00
Attorney, Agent or Firm:
Fumio Iwahashi
Hiroki Naito
Daisuke Nagano
Hiroki Naito
Daisuke Nagano