كرة نقل f/2.0 - 3 بوصة 3.39 ميكرومتر

I was nervous about compatibility, but this 3-inch f/2.0 sphere fit perfectly into my existing mount. The surface quality is visibly flawless under test, giving me clean, repeatable interferograms for my mid-wave infrared setup.

Been hunting for a clean 3-inch sphere for our 3.39 μm setup for a while, and this one dropped right in with no realignment headaches. Fringes look tight and stable across the full aperture, way better than the older optic it replaced.

Snapped this into our interferometer for a 3.39 μm setup and the fringe contrast was clean right out of the case. The 1/20th wave rating at that wavelength isn't marketing fluff — our test data backs it up. Mounting was straightforward too.