Astree is a free, open source, optical design software.
Its computes, optimize and shows the light analysis of optical devices,.
Optical Surfaces can be conical or polynomial,having reflections, transmissions, stops, void, etc.
It also have an optimizer to enhance your design.
The source code is covered by the GNU LESSER GENERAL PUBLIC LICENSE Version 3 or later.
It use Qt for the gui.
Feel free to contribute!
Windows binaries can be downloaded at: http://edeforas.free.fr