A dry microscope objective has and is used at

PHYSICS · Subjective · Fermi University Physics · Optics & Photonics · Fourier optics and image formation · Fourier optics and image formation

What an Instrument Can See, Ch The transfer function of an imaging system

Problem

A dry microscope objective has

\mathrm{NA} = 0.90

and is used at

\lambda = 550\ \mathrm{nm}

. (a) Compute the Abbe period (

0.5\lambda/\mathrm{NA}

), the Rayleigh limit (

0.61\lambda/\mathrm{NA}

) and the Sparrow limit (

0.47\lambda/\mathrm{NA}

), each in nanometres, naming the criterion with each number.