| 摘要 |
PROBLEM TO BE SOLVED: To provide a laser synthesizer which is made smaller in space and less in reflection loss. SOLUTION: The laser beams from exit ports 1 arranged laterally on the same axis are collimated by a collimating lenses to parallel light beams, which are further made into the parallel light beams in the same direction perpendicular to the same axis by prisms 3. These parallel light beams are condensed by a condenser lens 4 to an incident port 5. The prisms are used in place of mirrors, by which the synthesizer of the smaller space may be obtained as there is no thickness of the mirrors. In addition, the reflection principle of the prisms utilizes the critical angle of high-refractive index material and the air of a low refractive index. Since the reflectivity is high and the absorption of the laser beams is little, there is substantially no temperature elevation.
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