I'm struggelling with a large beam diameter projector project that requires reduction telescopes to fit a DT20H 7mm apature scanner. Looking through scanner related threads and on Google/Ebay all the scanners are reviewed based on speed and angle, but aperture is not discussed. Any options? There are industrial scanners for marking/cutting from China that might be available for realistic prices, but the sites are thin. There is no discussion of available optics, amps ect.