Esco Optics, Inc.

Commercial Quality Windows, Square, G1 Commercial Grade Fused Quartz

Commercial Quality Windows, Square, G1 Commercial Grade Fused Quartz - Main image
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$8.32 $11.55 In stock

Category: Commercial Quality Square

Diameter Tolerance

+/- 0.125 mm

Thickness Tolerance

+/- 0.125 mm

Surface Accuracy

≤ 2λ per inch

Surface Quality

60-40 Scratch-Dig or better

Parallelism

<10'

Edges

Fine ground and safety beveled*

Clear Aperture

85%


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

Commercial windows used for sight glasses, instrument windows, beamsplitter substrates, vacuum windows, welding window substrates. Esco carries inventory of square commercial optical windows made from G1 Commercial grade fused quartz. The G1 coding refers to the Striae (per MIL-G-174A) C-D, Index Variation ∆n(x10-6) 20.

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United States · Return window (days after delivery): 30. Return method: By mail. Return postage: Seller pays.

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Customer Reviews (4.4 / 5 · 5 reviews)

Nicholas ★★★★★

Was relieved to find the parallelism stayed under 10 arcminutes out of the box—saved me a lot of alignment work. The scratch-dig quality is noticeably better than cheaper windows I've tried before.

Sophia H. ★★★★★

Ordered four of these for a laser bench and every one came in dead square with clean edges, no chips at all. The 60-40 scratch-dig surface was genuinely as advertised, which I can't say for the last batch I bought elsewhere. Diameter held within a tenth of a millimeter too.

Sophia ★★★★★

The 60-40 scratch-dig surface is genuinely flawless under my inspection loupe, and the 2λ per inch flatness makes alignment work a breeze. Parallelism held under 10 arcminutes across all four corners, exactly what I needed for this optical setup.

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