自聚焦光束
The improved optical scanning system consisting of a beam expander, a galvanometric scanner with automatic self-calibra-tion and an f-theta lens can get a laser light spot with the diameter of 0.012 mm on the focal plane.
由扩束镜、高精度扫描振镜及f-θ透镜构成扫描系统,扫描面上的激光光斑直径达到0.012mm。
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