كرة نقل 4 بوصة - مقارب F/15 - موجة 1/10

The certified 1/10 wave PV specification gave me real confidence before I even unboxed it, and the F/15 focal length made nulling my test setup straightforward. Interferogram fringes came out clean and evenly spaced on the first try.

The 1/10 wave PV spec on this F/15 converger is the real deal — fringe patterns stay clean and straight even at the edges of the aperture. Been running it daily on our interferometer setup for a few weeks now and it hasn't drifted once.

Swapped this in for my old transmission sphere and the fringe quality is noticeably cleaner — I'm getting solid 1/10 wave readings without having to fuss over the setup. The 4" aperture covers everything I need for my interferometry work. Genuinely impressed.