online optical calculator logo
photometry
irradiance in the image space of an optical system


irradiance of a screen by a ponctual source with a given optical power and located at the focal point of an optical system


Caution
Fill in all input cells.
Choose all parameters unit.
The screen is supposed to be perpendicular to the optical axis.
The light source is supposed to be isotropic.
All parameters are positive.

InputValueunit
P
D
fi
T
OutputValueUnit
Eto be calculated
irradiance of a screen by a ponctual source with a given optical power and located at the focal point of an optical system
P : optical power of the light source D : aperture diameter of the optical system fi : effective focal length of the optical system T : transmission of the optical system E : irradiance in the illuminated part of the screen

Note
This calculation page can not detect all unrealistic inputs.



contact : contact@optical-calculation.com - website : www.optical-calculation.com Copyright 2009 CLAVIS S.A.R.L. All rights reserved