online optical calculator logo
photometry
luminous flux transmitted through an aperture


ratio of luminous flux from a spherical source transmitted through a circular angular aperture


Caution
Fill in all input cells.
Choose all parameters unit.
All parameters are positive.
It is assumed that r is much smaller than D.
It is also assumed that r is much smaller than e.

InputValueunit
teta
OutputValueUnit
Tto be calculated
ratio of luminous flux from a spherical source transmitted through a circular angular aperture
teta : half angle of the aperture T : ratio of luminous flux transmitted through the aperture

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