نوافذ الياقوت، دائرية (اتجاه عشوائي)

I needed these for a precision optics project, and the diameter and thickness being held to +/- 0.05 mm made alignment much easier than I expected. The surface quality is clean with no visible scratches, so they’re performing perfectly for my setup.

The surface accuracy under 15λ per inch is spot-on for what I needed, and the 80-50 scratch-dig finish looks flawless under magnification. These circular windows arrived dead-on to the stated diameter tolerance, which saved me from having to rework my mount.

The edge finish on these is clean enough that I didn't need to do any touch-up before mounting them in my optical setup. Tolerance held to +/- 0.05 mm on both the diameter and thickness, which matched my calipers exactly. Clear aperture of 90% left plenty of usable surface for the beam path.