عدسات محدبة مستوية، كوارتز منصهر من الدرجة التجارية G1

Swapped out my old soda-lime glass for these fused quartz lenses and the clarity difference in my collimator setup is immediately obvious. The 40mm diameter fits my mount perfectly.

The fused quartz surface is noticeably clearer than the borosilicate lens I was using before, and it handles my collimated beam without any visible scatter. Focus spot tightened up right where I wanted it, and the flat back made mounting in my holder dead simple.

Swapped out the plastic lens in my beam expander for this fused quartz one and the difference in clarity is obvious. The flat back surface makes mounting it flush against my holder way easier than a biconvex. Edge sharpness holds up nicely too.