| 摘要 |
PROBLEM TO BE SOLVED: To obtain a multi-axis laser emitter maintaining high accuracy even with the use of an optical spectroscope with low accuracy. SOLUTION: The multi-axis laser emitter has an optical spectroscope 4 provided with mirror surfaces 7a, 7b, 7c and 7d causing reflection with an angle of 90 deg. to each other for the main beam H of a laser light source 6. On at least one light path of spectrum beams Ta, Tb, Tc and Td rotating with angles of 90 deg. for the main beam H by the mirror surface 7, wedge plates 8a, 8b, 8c and 8d for correction are put behind. Preferably they are arranged at fixed positions in the spectroscope 4. Preferably the mirror surfaces 7a, 7b, 7c and 7d are constituted of reflection-coated prism surfaces 14a and 14b. The mirror surfaces 7a, 7b, 7c and 7d of the spectroscope 4 are made the mirror surfaces provided on at least two partial prisms contacted so as to form a compact unit, which are constituted rotation-adjustable around two rectangular axis lines for the main beam H.
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