光學系統的截止頻率計算

2021-05-18 /

數值孔徑 (Numerical Aperture, NA) 計算

 $Na = \frac {D} {2f}$

 $Resolution = \frac {\lambda}{2NA}$

 $f_0= \frac {D}{2 \lambda f}$

 $f_0= \frac{1}{\lambda} \frac{D}{2f}$

 $f_0= \frac{NA}{\lambda}$

 $Resolution = \frac{1}{2f_0} = \frac{\lambda}{2NA}$

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