Modeling an Precision Elliptical Flat Mirrors

There looks to be some missing info, such as what the edges do around the sides, but here's one take on it:

I just extruded an ellipse along an angled line, and then cut away part of the outside. The cut creates a funny edge, but it fits the info given.

extrude a cylinder, dia = minor axis cut disc from side of cylinder. (hint 45 deg)

i can't post , so i sent you a sample.

hth kb

As Ken mentioned, I believe this is how it is modeled? (it's been a while since I worked with optics)

that's it.

it's preferable to have origin on surface to make it easy to calculate focal distances.

Great,

Thanks guys!

=========================================================================== Chris

Oooo... as a reminder, when drawing mirrors/lenses watch your units!