数值孔径与分辨率 Ro 0.612λ △Yo= 数值孔径(N.A) M nsina Numerical Aperture NA=n·sinc (a)g=7°NA=0.12 (b)C=20°NA=0.34 (c)a=60°NA=0.87 Light Cone (a) (b) (c) Figure 1 18数值孔径与分辨率 18 数值孔径(N.A.)