Paraxial lens in FRED

[Stevem]

The attached file realizes a paraxial lens in FRED. This is meant to be portable to any FRED file. Note that the paraxial lens MUST have the full name "Geometry.Paraxial.Lens" and that the focal length is entered on the Auxiliary Tab of that Surface. Rays are traced by running the Embedded Script, NOT by hitting any of the Trace buttons.


http://www.photonengr.com/downloads/Examples/paraxiallens.zip

[ryani]

I am attaching a second version of the embedded script which uses the direction tangent calculation and allows rays of arbitrary height above the optical axis to be focused exactly to the focal point of the paraxial lens. Note, this file does not account for the phase of the rays as they are modified by the paraxial lens.