Parameters
Lr : source radiance
Ds : source diameter
x : position of the source center along the X axis from the optical axis of the light guide
y : position of the source center along the Y axis from the optical axis of the light guide
e : distance from the source source plane to the light guide entrance facet plane
Dl : light guide diameter
n : light guide refraction index
L : light guide length
Tl : transmission of the light guide per length unit
Pc : power capted by the light guide
Ptr : power transmitted by the light guide
