Esco Optics, Inc.

Commercial Quality Windows, Circular, G1 Commercial Grade Fused Quartz

Commercial Quality Windows, Circular, G1 Commercial Grade Fused Quartz - Main image
$7.28 $10.4 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, welding window substrates. Esco carries a complete inventory of G1 Commercial Grade Fused Silica circular commercial optical windows. G1 coding refers to the Striae (per MIL-G-174A) C-D, Index Variation ∆n(x10-6) 20

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Customer Reviews (5.0 / 5 · 5 reviews)

Claire D. ★★★★★

Was a bit worried about the thickness tolerance for my setup, but these windows are dead on at +/- 0.125mm. The fused quartz material feels incredibly solid and the edges are cleanly finished.

Sebastian O. ★★★★★

The surface quality is noticeably flawless, with no visible scratches or digs under inspection. I was also impressed by the tight diameter tolerance, which made it fit perfectly into my optical setup. Exactly what I needed for precision work.

Benjamin E. ★★★★★

The parallelism on these is seriously tight, I measured under 5 arc minutes on my setup and both faces read clean. Surface quality came in better than the 60-40 spec too, no digs anywhere I could find.