Title:
BEAM SHAPING DEVICE AND LASER OSCILLATOR
Document Type and Number:
WIPO Patent Application WO/2017/138298
Kind Code:
A1
Abstract:
This beam shaping device includes a slow-axis collimator (SAC) and a fast-axis collimator (FAC). The SAC is disposed between a LD bar and the FAC. The SAC includes a first incidence surface and a first emission surface. The first incidence surface includes a plurality of incident-side lens surfaces aligned in the slow-axis direction X. Each incident-side lens surface is shaped to protrude outside the SAC in the cross-section perpendicular to the fast-axis direction Y, and to recede inside the SAC in the cross-section perpendicular to the slow-axis direction X. Each of the first incidence surface and the first emission surface has a concentric arc shape with a point on the emission end surface of a light-emitting layer as a center in the cross-section perpendicular to the slow-axis direction X.
Inventors:
KOBAYASHI NOBUTAKA (JP)
ODA CHISAKO (JP)
MORITA DAIJI (JP)
NISHIMAE JUNICHI (JP)
ODA CHISAKO (JP)
MORITA DAIJI (JP)
NISHIMAE JUNICHI (JP)
Application Number:
PCT/JP2017/001021
Publication Date:
August 17, 2017
Filing Date:
January 13, 2017
Export Citation:
Assignee:
MITSUBISHI ELECTRIC CORP (JP)
International Classes:
G02B27/09; B23K26/06; G02B3/06
Foreign References:
| JP2015503221A | 2015-01-29 | |||
| JP2000089161A | 2000-03-31 | |||
| JP2011169969A | 2011-09-01 |
Attorney, Agent or Firm:
SOGA, Michiharu et al. (JP)
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