调焦

Step 1: Center the secondary mirror on the axis of the focuser drawtube.

把副镜中央置于调焦伸缩管的中轴。

The last part is conclusion portion, it sum up the discourse and fix the arithmetic of refocus and image deblur used in Infrared Guidance Head.

最后一章(第五章)是结论部分,对本论文做了总结,并选定了适合红外导引头的调焦法和图像恢复法。

The method of two point probe focus is proposed to resolve the proble m of the jog of focus, and unitization processing is used to eliminate the chang e of laser power.

提出了采用两点探焦法解决刻划时焦点的跳动问题，采用归一化处理消除光强波动对调焦精度的影响。