The ldc2Phi function calculates the luminous flux \Phi_v of a luminaire from its luminous intensity distribution curve (LDC) with the following equation:
\Phi_v = \int{I_v \,\textrm{d}}\Omega_1Usage:
phi = ldc2phi(ldc)
Where:
| Parameter | Description |
phi | Is the luminous flux of the luminaire, \Phi_v. |
ldc | Is the luminous distribution curve of the luminaire, see also: readldt |
Example
ldc = readldt('lambert.ldt');
phi = ldc2phi(ldc)
See also: readldt
Result:
phi = 1000.00
Note: EULUMDAT .ldt files are usually normalized at 1000 lm.
Reference:
Beleuchtungstechnik Grundlagen. 4. Auflage, Huss-Medien GmbH, am Friedrichshain 22, 10407 Berlin, 2016, ISBN: 978-3-341-016343.