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photometry
luminous flux transmitted through an aperture


luminous flux transmitted by an optical system for a ponctual source with a given optical power


Caution
Fill in all input cells.
Choose all parameters unit.
All parameters are positive.

InputValueunit
P
D
x
T
OutputValueUnit
Fto be calculated
luminous flux transmitted by an optical system for a ponctual source with a given optical power
P : optical power of the light source D : aperture diameter of the optical system x : algebric distance from the primary principal plane of the optical system to the light source T : transmission of the optical system F : luminous flux transmitted by the optical system

Note
This calculation page can not detect all unrealistic inputs.



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