Precision Quality Flat Mirrors, Enhanced Aluminum

$27.06 ~~$45.1~~ In stock

Esco Optics offers precision quality flat mirrors coated with Enhanced Aluminum providing Ravg. > 90%, 450-2000nm. Manufactured using Borofloat-33 (12.7mm) or Fused Silica (25.4mm, 50.8mm), these mirrors are polished to 1/10 wave surface accuracy and 40/20 scratch/dig over an 85% aperture. The second surface is ground and all edges are beveled. Diameter tolerance is +0/-0.1mm

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Customer Reviews (4.8 / 5 · 5 reviews)

Kevin E. ★★★★★ Oct 18, 2026

These arrived perfectly packaged and the coating is noticeably cleaner than cheaper options I’ve tried. The 50.8mm fused silica substrate feels substantial and works great in my setup.

Riley F. ★★★★★ Oct 17, 2026

I needed a mirror that could handle both visible and near-IR wavelengths, and the 90%+ average reflectivity from 450 to 2000nm is spot on for my setup. The 12.7mm Borofloat substrate feels solid and holds alignment perfectly without any warping.

Elizabeth J. ★★★★★ Oct 12, 2026

Picked up the 25.4mm fused silica version for a beam-steering setup and the surface flatness is dead-on across the whole aperture. Reflectivity holds up noticeably better than my old mirrors past 1500nm, which is exactly where I needed the extra headroom. Zero complaints so far.