6 بوصة IR TF، 3.39 ميكرومتر و10.6 ميكرومتر

The 150 nm PVr wavefront specification is tighter than I expected for a dual-band flat this size, and it held consistent alignment across both 3.39 and 10.6 microns in our test bench. The ZnSe construction feels solid, and the AR coating really cuts down ghost reflections during CO2 laser measuremen

Switching between 3.39 and 10.6 microns for my interferometer setup was seamless, and the AR coating really cuts down on stray reflections. It's nice to have a single transmission flat that covers both wavelengths without swapping optics.

The bayonet mount clicked on cleanly with no wobble, and the dual-band AR coating held up perfectly during my 3.39 µm alignment checks. Swapping to 10.6 µm for the thermal pass gave the same crisp fringes, so it’s earning its keep as a workhorse reference.