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]