4 ms·
The Rayleigh criterion above is exactly what is used to answer the question you're asking :) it tells you what size objects you can resolve with a given wavelen
by tomtom1337 5y ago
The Rayleigh criterion above is exactly what is used to answer the question you're asking :) it tells you what size objects you can resolve with a given wavelength of light, which if you think about it in a different manner also tells you what the smallest useful pixel size you can have is. Two smaller pixels next to one another would be able to distinguish no more information than a combined one.
- namibj 5y agoActually, that's not true. However, going beyond requires deconvolution of the wavelength-scaling diffraction pattern, so it's only practical if you have narrowband radiation (stops working at 10~20% FWHM bandwidth). Suitable sources include monochromatic LEDs, most lasers, and some gas discharge lamps (notably low pressure sodium).