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keisanHigh-precision calculations for everyday life and work

Airy disk size of the lens

Author: tsumutsumuExecutions: 7155

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Calculates the size of the Airy disk on the image plane based on the lens aperture and focal length.
Enter the observation wavelength in [nm] and the aperture and focal length in [mm]. However, since these values are determined by the lens’s F-ratio, you do not need to worry about this as long as the units for the aperture and focal length are the same.
Observation Wavelength
nm
Focal Length
mm
Caliber
mm
Size um
The unit of the calculation result is [um] (micrometers), so you can compare it to the pixel size of a digital camera or similar device.

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