Today I was using the same setup with the halogen light and decided to use some black background paper under the smoke glass.
I closed the venetian blinds and took several shots with the halogen light. I left the setup for a while and when I came back I saw these beautiful angled lines coming through narrow openings in the blinds and cascading across the poster board BG. It was also reflected back onto the poster board from the smoke glass. Needless to say I spent the next several minutes taking many shots.
Hope you like it. there are a few others in the extra gallery.