Class Special

source code

Special class.

This class represents general optics, as their actions on R and T are left
to the user to input. They are useful for special optics which are neither
reflective nor transmissive.

Actions:
    * T on HR: user input
    * R on HR: user input
    * T on AR: user input
    * R on AR: user input

**Note**: by default the actions of these objects are those of
beamsplitters (0, 0, 0, 0)

*=== Additional attributes with respect to the Optic class ===*

None

*=== Name ===*

Special

**Note**: the curvature of any surface is positive for a concave surface
(coating inside the sphere).
Thus kurv*HRNorm/|kurv| always points to the center
of the sphere of the surface, as is the convention for the lineSurfInter of
geometry module. Same for AR.

*******     HRK > 0 and ARK > 0     *******           HRK > 0 and ARK < 0
 *****                               ********         and |ARK| > |HRK|
 H***A                               H*********A
 *****                               ********
*******                             *******