Hi,

I am modeling a cavity reflector which have 3 holes, one it is the output, the others are due lamp connections and water cooling.

I want to model a lamp which absorbs the rays reflected by the reflector cavity and cross the lamp.  I use a source tube and defined a annular volume, concentric to source tube and with smaller external radius, and defined an absorbing coating on the external annular body  surface.  Doing it ZEMAX start to transmit rays out of the reflector on surfaces which were defined as mirror at material.   I inspected all the objects and all are defined as 'never' at Ray trace ignore object option.  When replacing the  source tube (and removing the annular absorber)  by a source volume, the mirrors work properly.   How can make the source to be transparent to rays emitted and absorbs the rays reflected by the cavity and crossing the source volume/surface?

Best Regards,

Adrian