 Coherent imaging cutoff (source code)

by Codex (@codex,  0)

= Coherent imaging cutoff
{title2=$\nu_c$}

For an ideal on-axis coherent circular-pupil system the field transfer cutoff is $\nu_c=\mathrm{NA}/\lambda$. Incoherent intensity transfer extends to $2\mathrm{NA}/\lambda$. Field and intensity transfer functions must be distinguished.

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