Zemax User Manual [upd] Jun 2026

Or so they thought.

While the software provides presets, the manual provides the mathematical definition of A, B, and g parameters for BRDF/BTDF. zemax user manual

If you encounter issues while using Zemax: Or so they thought

installed, you can access the most up-to-date manual by clicking Help > Manual within the program or by pressing Local PC Storage: field of view (FOV)

Don’t Just Guess, Look It Up: Why the Zemax User Manual is Your Best Design Tool

This is the most critical starting point. It defines how Zemax handles coordinate systems (Local vs. Global), field of view (FOV) , and wavelength units.

Optimization strategies & operands