Hi STEFAN,

A bit of web searching brings up (at least) TWO different interpretations of the term Gaussian Mirror.

I. From https://en.wikipedia.org/wiki/Curved_mirror#Mirror_equation_and_magnification
The Gaussian mirror equation, also known as the mirror and lens equation, relates the object distance, d0, and image distance, di, to the focal length f.


II. Something to do with Laser mirrors, and/or Apodization (whatever that means), "The degree of reflection slopes from the center of the optic in a Gaussian distribution. Used in unstable resonators"
This ring resonator contains a hyperbolic-cosine-Gaussian apodized aperture. ... “Graded-phase mirror resonators with a super-Gaussian output in a cw CO2 laser ...

- Brian
(No I do not understand...:-)

Car headlights?

This link seems to have relevant terms:
https://en.wikipedia.org/wiki/Gaussian_optics