Quartz Windows

Fused quartz windows: polished UV-grade and optical-grade quartz view ports and instrument windows, round or rectangular, custom sizes to drawing.

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Product details

What Is a Fused Quartz Window?

A quartz window is a polished flat or round fused quartz optic that lets you see, illuminate or measure through a barrier — furnace doors, vacuum chambers, UV systems and analytical instruments. Compared with borosilicate, fused quartz windows transmit deep-UV light and stay dimensionally stable at temperatures that would destroy ordinary glass.

Specifications

Parameter	Range
Shapes	Round discs, rectangular windows, custom outlines
Diameter / size	[Confirm With Production]
Thickness	[Confirm With Production]
Materials	JGS1 (UV grade), JGS2 (optical grade) — see grade comparison
Surface finish	Ground, lapped or polished; optical polish on request
Transmission	UV to IR depending on grade (≈185–2500 nm for JGS1) [Batch data on request]

Window Options

Round and rectangular windows, edge-ground or polished
Single-side or double-side polished
Machined features — mounting holes, notches, steps (CNC machining)
Custom thickness for pressure or thermal load [Pressure rating review on request]

Applications

Optical — UV windows, instrument optics, substrates
Semiconductor — chamber and furnace view ports
Industrial — high-temperature observation windows
Laboratory — UV spectrophotometry and photochemistry

Quality Control

Thickness, flatness, surface quality and — for optical grades — visual inspection under illumination. See quality control.

FAQ

Which grade for deep-UV transmission?
JGS1 transmits down to about 185 nm; JGS2 is suitable from roughly 220 nm. See the grade guide.

Can windows be made to custom thickness?
Yes — thickness is chosen per application; send us the operating conditions.

Related products: quartz plates · quartz sight glass · Related material: fused silica · Related application: optical

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