Spatial Resolution Calculator


About Spatial Resolution Calculator (Formula)

The Spatial Resolution Calculator is a tool used to determine the spatial resolution of an imaging system based on the wavelength of the laser and the numerical aperture (NA). Spatial resolution refers to the ability of an imaging system to distinguish between two closely spaced objects.

The formula used to calculate the spatial resolution is:

Spatial Resolution = (0.61 * Wavelength) / Numerical Aperture


  • Wavelength is the wavelength of the laser in nanometers (nm).
  • Numerical Aperture (NA) is a dimensionless quantity that characterizes the light-gathering ability of an optical system.

By inputting the values of the wavelength and numerical aperture into the calculator, it computes the spatial resolution in nanometers.

The spatial resolution is a crucial parameter in various fields such as microscopy, optical imaging, and lithography, as it determines the level of detail that can be resolved in an image. Higher numerical apertures and shorter wavelengths generally result in better spatial resolution, allowing for sharper and more detailed imaging.

The Spatial Resolution Calculator provides a quick and convenient way to estimate the spatial resolution of an imaging system based on the input parameters, aiding researchers, engineers, and scientists in optimizing their imaging setups and understanding the achievable resolution limits.

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