Calculates any one of the parameters if the others are entered. Usually used to select a focal length of a lens to match a spot size or calculate the appropriate beam diameter at the back of a lens to give a specific spot size. This is applicable for thin spherical lenses found in flow cytometers.
Determine which parameter you wish to calculate and Enter the values in the units displayed in the other input fields.
When the calculate button is pressed the empty field will by filled with the result.