Esco Optics, Inc.

Commercial Quality Windows, Circular, S1-UV Grade Fused Silica

Commercial Quality Windows, Circular, S1-UV Grade Fused Silica - Main image
$9.98 $13.86 In stock

Category: Commercial Quality Circular

Diameter Tolerance

+/- 0.125 mm

Thickness Tolerance

+/- 0.125 mm

Surface Accuracy

≤ 2λ per inch

Surface Quality

60-40 Scratch-Dig or better

Parallelism 

<5'

Edges

Fine ground and safety beveled*

Clear Aperture

90%


*parts under 25.4mm in diameter may not have beveled edges

Commercial windows are used for sight glasses, instrument windows, beamsplitter substrates, vacuum windows and welding window substrates. Esco carries a complete inventory of circular commercial quality windows of S1-UV Grade Fused Silica.  Windows are polished both sides with ground edges. 

Don't see a part that matches exactly what you need, perhaps you'd like to modify a dimension or add a coating?  Use our fast online quote tool to find out what a custom part would cost. 

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Customer Reviews (4.8 / 5 · 5 reviews)

Aurora T. ★★★★★

Ordered these for a DIY spectrometer project and the ≤2λ per inch surface accuracy held up perfectly under laser testing. Parallelism came in well under the 5' spec, which made alignment way less painful than I expected. Exactly what I needed for beam control work.

Scarlett B. ★★★★★

The parallelism spec of under 5 arcminutes is no joke, I checked it on our bench and it was dead on. Surface quality came in better than the 60-40 rating too, barely any digs under the loupe. These are going straight into our interferometer setup.

David M. ★★★★★

I needed a substrate that could handle both UV and visible light without ghosting, and the 60-40 scratch-dig spec on these is exactly what my setup required. The 2λ surface accuracy makes alignment with my laser path much cleaner than my old borosilicate windows.