Title:
LASER ILLUMINATION DEVICE
Document Type and Number:
WIPO Patent Application WO/2014/030431
Kind Code:
A1
Abstract:
A semiconductor laser oscillator is constituted by arranging laser diodes in two-dimensional fashion in a fast axis and slow axis direction. A laser beam that is emitted from the semiconductor laser oscillator is directed into a homogeniser. The homogeniser collects the laser beam into an elongate optical input region of the illuminated surface. The homogeniser divides the laser beam into a plurality of beams in relation to the short axis direction of the optical input region and inputs this plurality of divided beams into the optical input region in superimposed fashion on the illuminated surface. The slow axis direction of the semiconductor laser oscillator is inclined with respect to the long axis direction of the optical input region.
Inventors:
SHUDO KAZUMASA (JP)
Application Number:
PCT/JP2013/067762
Publication Date:
February 27, 2014
Filing Date:
June 28, 2013
Export Citation:
Assignee:
SUMITOMO HEAVY INDUSTRIES (JP)
International Classes:
G02B27/09; B23K26/06; B23K26/073; H01L21/268; H01S5/40
Domestic Patent References:
| WO2002077698A1 | 2002-10-03 |
Foreign References:
| JPH10244392A | 1998-09-14 | |||
| JP2008524662A | 2008-07-10 | |||
| JP2002239773A | 2002-08-28 | |||
| JP2002072132A | 2002-03-12 | |||
| JP2012156390A | 2012-08-16 | |||
| JP2009016541A | 2009-01-22 |
Other References:
See also references of EP 2889670A4
Attorney, Agent or Firm:
KITAYAMA, Mikio (JP)
Mikio Kiyama (JP)
Mikio Kiyama (JP)
Download PDF: