Hi,

I’m experiencing strange behavior with an OAP mirror:

1. On axis field - chief ray (only) is vignetted. This resolves itself when I “set vignetting” - but I still don’t understand why/how only the chief ray would be vignetted.
2. Off axis fields do not reflect properly - the inversion doesn’t work for them somehow.

Any thoughts?

Thanks,

Eli

Chief ray vignetting:

Off axis fields: