To obtain a high magnification image, the automatic focussing is of vital importance.
在高倍率显微图像的处理过程中，自动聚焦具有重要意义。
Theoretical basis of automatic focussing are analysed and its system and circuit design are proposed in this paper.
本文分析了自动聚焦的理论依据，提出了实现自动调焦的总体方案和电路设计。
Theoretical basis of automatic focussing are analysed and its system and circuit design are proposed in this paper.
本文分析了自动聚焦的理论依据，提出了实现自动调焦的总体方案和电路设计。
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