كرة إرسال F/7.2 مقاس 6 بوصات - موجة 1/20 (6024-0405-13)

I’ve been running this 1/20 wave sphere on my bench, and it delivers clean fringes with virtually no residual error. The 6-inch aperture covers my larger test optics easily, and the F/7.2 speed is a nice sweet spot for balanced sensitivity. Definitely a solid upgrade from my old standard reference.

Swapping this into my interferometer setup immediately cleaned up fringe patterns I was fighting with before. The 1/20 wave figure is definitely real, and the 6-inch aperture gives plenty of room for my larger optics.

The 1/20 wave rating on this transmission sphere is no joke — our interferometer fringe pattern cleaned up noticeably compared to the old reference. The 6-inch aperture gives us plenty of coverage for our larger test flats without repositioning constantly.