Title:
OPTICAL PATH COVER AND LASER DEVICE
Document Type and Number:
WIPO Patent Application WO/2020/225908
Kind Code:
A1
Abstract:
This optical path cover (6) is placed in an optical path through which a light beam travels. The optical path cover (6) has a tube section (10) through which a light beam can pass. A plurality of projections (15) are formed on inner walls (10a, 10b, 10c, 10d) of the tube section (10) on the optical axis side of the light beam. The plurality of projections (15) each exhibit a convex shape in the cross section perpendicular to the optical axis, and the convex shapes are aligned to face toward the optical axis side. Each of the plurality of projections (15) exhibit a long shape along the optical axis.
Inventors:
KYOTO TOMOHIRO (JP)
Application Number:
PCT/JP2019/018581
Publication Date:
November 12, 2020
Filing Date:
May 09, 2019
Export Citation:
Assignee:
MITSUBISHI ELECTRIC CORP (JP)
International Classes:
H01S5/0239; H01S3/02
Domestic Patent References:
| WO2008001662A1 | 2008-01-03 |
Foreign References:
| JPS5930386U | 1984-02-25 | |||
| JP2009025584A | 2009-02-05 | |||
| JPH062310U | 1994-01-14 | |||
| US5225931A | 1993-07-06 |
Attorney, Agent or Firm:
TAKAMURA, Jun (JP)
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