Title:
CONDENSER
Document Type and Number:
WIPO Patent Application WO/2004/021068
Kind Code:
A1
Abstract:
A condenser comprising a plurality of light sources (10, 20), and a light synthesizing element (30). These light sources (10, 20) comprise semiconductor laser array stacks (12, 22), collimator lenses (16, 26), and beam converters (18, 28), respectively. Since the light synthesizing element (30) synthesizes a beam from the stack (12) and a beam from the stack (22), a laser beam having a high light density is created. The transmitting part (32) and the reflecting part (34) of the light synthesizing element (30) preferably have a stripe shape elongated in the stacking direction of the stacks (12, 22). Even if a plurality of active layers (14, 24) have a positional shift, beams emitted from the active layers (14, 24) are received appropriately by the light synthesizing element (30) and synthesized.
Inventors:
ZHENG YUJIN (JP)
MIYAJIMA HIROFUMI (JP)
KAN HIROFUMI (JP)
MIYAJIMA HIROFUMI (JP)
KAN HIROFUMI (JP)
Application Number:
PCT/JP2003/010963
Publication Date:
March 11, 2004
Filing Date:
August 28, 2003
Export Citation:
Assignee:
HAMAMATSU PHOTONICS KK (JP)
ZHENG YUJIN (JP)
MIYAJIMA HIROFUMI (JP)
KAN HIROFUMI (JP)
ZHENG YUJIN (JP)
MIYAJIMA HIROFUMI (JP)
KAN HIROFUMI (JP)
International Classes:
G02B19/00; G02B27/09; G02B27/00; G02B27/10; H01S5/40; (IPC1-7): G02B27/09; G02B27/10
Foreign References:
| JPH1172743A | 1999-03-16 | |||
| JP2001083460A | 2001-03-30 | |||
| JP2001111147A | 2001-04-20 | |||
| JP2001215443A | 2001-08-10 |
Attorney, Agent or Firm:
Hasegawa, Yoshiki (Ginza First Bldg. 10-6, Ginza 1-chom, Chuo-ku Tokyo, JP)
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