Paraxial Metrics are provided to enable first order optical design capabilities.
For all paraxial calculations in KostaCLOUD, We assume:
The system can be represented as an unfolded system.
The calculated sequence information is factual.
We currently do not account for bifurcation of sagittal and tangential planes
For systems that break these assumptions, please use real-ray tracing routines. We have several of these operands which are approximated via real ray tracing.
Effective Focal Length (Paraxial)
Effective focal length is defined as taking a first order ray parallel to the optical axis and tracing it through the optical system, and then calculating the distance in which this ray intersects with the original height.