max_angle
- pygrin.pygrin.max_angle(n_0, pitch, length, diameter)[source]
Maximum acceptance angle of a grin lens in air.
- Parameters
n_0 – index of refraction at center of grin lens [unitless]
pitch – pitch or period of the lens [unitless]
length – axial length of the lens [mm]
diameter – diameter of the lens [mm]
- Returns
float – the maximum acceptance angle of the lens in air [radians]