Quartz/UV Fused Silica/IR Quartz Windows

Quartz Glass, UV-Grade Fused SilicaSynthetic quartz glass with high ultraviolet transmittanceSpecial PropertiesLow coefficient of thermal expansionEnormous operating temperature rangeUV-quality glass(Outstanding ultraviolet light transmittance)Very good temperature shock resistanceHigh purity glassLow fluorescenceHigh chemi

Featured Products

Quartz Glass, UV-Grade Fused Silica

Synthetic quartz glass with high ultraviolet transmittance

Special Properties

  • Low coefficient of thermal expansion
  • Enormous operating temperature range
  • UV-quality glass
    (Outstanding ultraviolet light transmittance)
  • Very good temperature shock resistance
  • High purity glass
  • Low fluorescence
  • High chemical resistance
  • Completely free of soda

Typical Applications

  • UV-transparent optics
  • High temperature windows
  • UV-measurement technology
  • Glass substrates for thin film coatings
  • Optical windows for ultraviolet applications
  • Optics for space technology
  • Semiconductor applications
  • Cover slips & microscope slides with high ultraviolet permeability


What is synthetic quartz glass and what can it do?

Fused Silica (SiO2) is a synthetic molten, high purity, amorphous, non-crystalline quartz glass with exceptional properties. The material is made by melting very pure raw materials and is used for applications, that requirea very good thermal strength or an excellent transparency for wavelengths below the visible spectrum. Because quartz glass offers a remarkable transmissivityof ultraviolet wavelengths, it is often used for UV-applications. This very high UV-light transparency cannot be outperformed by any other industrial glass material. Due to its low coefficient of thermal expansion, quartz glass shows a very good thermal shock resistance. The excellent thermal properties enable fused silica to hold up very strong thermal loads and allow a very high operating temperature. Hence, the glass is often used for the fabrication of heat resistant windows, that must withstand high temperatures of up to 1000 °C without melting or breaking. Likewise, the superb chemical stability of quartz glass is one of the best. It is exceedingly resistant against saline solutions, acids and water and the high chemical durability of quartz glass against bases is top class. It is much better than most other glass materials can provide. Particularly the high temperature resistance and the high grade of purity, make quartz glass a perfect material for various semiconductor applications.


From raw glass blocks to quartz glass optics

Our quartz glass components are fabricated out of large non-crystalline glass blocks, called "boules". This pure raw fused silica material is ground, polished, shaped and surface finished according to customer's specifications, until finally any kind of optics have emerged from the raw glass block. If required, our UV-grade quartz glass can be selected for a low content of inclusions and/or a high refractive index homogeneity and purity. We are processing many different available quartz, fused silica or fused quartz raw glass materials with different properties from nearly any well-known raw glass supplier worldwide and we make all kinds of optics out of these different material grades.


In order to request a quotation for quartz glass slides, windows or polished substrates at custom dimensions, please use the button below. Please choose UV-grade for a transmission of >80% at 185nm. Choose sight glass grade for applications where ultraviolet transmittance and optical properties are of secondary concern or if you want to use quartz glass due to its thermal properties only.

Fused Quartz Windows & Plates
Material:Fused Quartz Vitrosil 055®
Dimensions:Diameter +0.00/-0.20mm
 Squares/Rectangles ± 0.20mm
Thickness:± 0.10mm
Edges:Fine Ground
Flatness:Diameters ≤5 fringes
 Squares/Rectangles ≤ 10 fringes
Parallelism:≤ 3 arc minutes

Custom Sizes & Options
Diameters:5mm to 400mm
Squares/Rectangles:1mm to 500mm
Thickness:0.10 to 50mm
Surfaces:80/50 to 20/10
Edges:Ground or polished
Dimensions/Thickness:Tol. Up to 0.02mm
Parallelism:Up to 10 seconds
Flatness:Up to Lambda 10
Coatings:See coatings section
Materials:Additional grades of Fused Quartz, Optical, drawn & rolled plate & made by other manufacturers

(IR) Infrared Quartz Windows
Infrared grade Quartz windows are made from high purity natural fused Quartz electrically fused. This results in a useful transmission in the infrared from 290mm to 3500nm. The (OH) water content is as low as 8ppm or less 
Material:Infrared Fused Quartz
Diameter Tolerance:+0.00/-0.10mm
Thickness tolerance:± 0.10mm
Edges:Fine Ground
Flatness:≤5 fringes
Parallelism:≤3 arc minutes

Custom Sizes & Options
Diameters:4mm to 300mm
Squares/Rectangles:1mm to 200mm
Thickness:0.10 to 50mm
Surfaces:80/50 to 20/10
Edges:Ground or chamfered
Dimensions/Thickness:Up to 0.02mm
Parallelism:Up to 10 seconds
Flatness:Up to Lambda 10
Coatings:See coating section

Quartz Light Guides/Rods
Quartz rods have the ends optically polished. They act to steer and transmit light down the rod. For certain applications it may be necessary to diffuse or blacken the circumference to eliminate light scatter. Made in an extensive range of standard quartz rods with ends either polished flat or to a desired angle. 
Material:Quartz - Drawn Rod
Dimension Tolerance:± 0.20mm
Edge Finish:Circumference transparent
Polished End Surfaces:80/50

Custom Sizes & Options
Materials:Quartz, Soda glass, Borosilicate & UV Fused Silica
Diameters:1mm to 50mm
Length:10mm to 1 metre
End Surfaces:Radiused, angled, ground or AR coated
Circumference:Diffused, blackened or optically polished


Contact us

Please feel free to give your inquiry in the form below We will reply you in 24 hours