Fused Silica Round Windows

Fused Silica Windows（round）

The fused silica windows are part of the protective window or lens. Having characteristics such as high transmittance, low refractive index, and low dispersion, it has unique advantages for applications in infrared optical systems and high-temperature environments. The fused silica material has the characteristics of high purity and high temperature melting, which makes the window piece have excellent light transmittance and thermal stability. UM OPTICS can provide different types of window sheets such as circular, rectangular, wedge-shaped, perforated, and stepped sheets. It can be coated with reflective film, anti reflective film, filter film, spectroscopic film, polarizing film, and metallization film systems.

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All products are provided with invoices, with a tax point of 13.

The product undergoes multiple inspections before being stored, and the quality is guaranteed. Please use it with confidence.

Spot products, shipped within 48 hours. For non stock or customized products, please consult.

International order logistics include DHL, FedEx, TNT, and EMS

When receiving the product, please ensure the integrity of the product packaging box first. If there is serious damage to the appearance, please refuse and contact us, and we will handle it for you as soon as possible.

Optical products are special items and cannot be returned or exchanged unless there is a quality issue with the product itself

If you need customization or bulk production, please contact us online and we will offer you a discounted price.

	Dia(mm)	ThK(mm)	Surface Quality	PV@632.8nm	Parallelism	Bevel(mm)
	Screen Reset 76.2 75 50.8 38.1 25.4 12.7 5	Screen Reset 6.3 5 4 3 2 1	Screen Reset 60-40	Screen Reset 2λ λ λ/2	Screen Reset 3′	Screen Reset 0.35
More+ Less	76.2	6.3	60-40	2λ	3′	0.35
Φ76.2mm，Thickness 6.3mm，Fused Silica Round Windows Number：PQu01H005 Dia(mm)：76.2 ThK(mm)：6.3 Surface Quality：60-40 PV@632.8nm：2λ Parallelism：3′ Clear Aperture：>90% Diameter Tolerance(mm)：+0.0/-0.1 Thk Tolerance(mm)：±0.1 Transmission Range：0.18-2.1μm Substrate Material：Fused Silica Bevel(mm)：0.35 Coating：Uncoated REACH：Compliant ROHS：Compliant
More+ Less	75	5	60-40	λ	3′	0.35
Φ75mm，Thickness 5mm，Fused Silica Round Windows Number：PQu01H004 Dia(mm)：75 ThK(mm)：5 Surface Quality：60-40 PV@632.8nm：λ Parallelism：3′ Clear Aperture：>90% Diameter Tolerance(mm)：+0.0/-0.1 Thk Tolerance(mm)：±0.1 Transmission Range：0.18-2.1μm Substrate Material：Fused Silica Bevel(mm)：0.35 Coating：Uncoated REACH：Compliant ROHS：Compliant
More+ Less	50.8	4	60-40	λ	3′	0.35
Φ50.8mm，Thickness 4mm，Fused Silica Round Windows Number：PQu01F020 Dia(mm)：50.8 ThK(mm)：4 Surface Quality：60-40 PV@632.8nm：λ Parallelism：3′ Clear Aperture：>90% Diameter Tolerance(mm)：+0.0/-0.1 Thk Tolerance(mm)：±0.1 Transmission Range：0.18-2.1μm Substrate Material：Fused Silica Bevel(mm)：0.35 Coating：Uncoated REACH：Compliant ROHS：Compliant
More+ Less	50.8	3	60-40	λ	3′	0.35
Φ50.8mm，Thickness 3mm，Fused Silica Round Windows Number：PQu01F019 Dia(mm)：50.8 ThK(mm)：3 Surface Quality：60-40 PV@632.8nm：λ Parallelism：3′ Clear Aperture：>90% Diameter Tolerance(mm)：+0.0/-0.1 Thk Tolerance(mm)：±0.1 Transmission Range：0.18-2.1μm Substrate Material：Fused Silica Bevel(mm)：0.35 Coating：Uncoated REACH：Compliant ROHS：Compliant
More+ Less	38.1	3	60-40	λ/2	3′	0.35
Φ38.1mm，Thickness 3mm，Fused Silica Round Windows Number：PQu01F003 Dia(mm)：38.1 ThK(mm)：3 Surface Quality：60-40 PV@632.8nm：λ/2 Parallelism：3′ Clear Aperture：>90% Diameter Tolerance(mm)：+0.0/-0.1 Thk Tolerance(mm)：±0.1 Transmission Range：0.18-2.1μm Substrate Material：Fused Silica Bevel(mm)：0.35 Coating：Uncoated REACH：Compliant ROHS：Compliant
More+ Less	25.4	2	60-40	λ/2	3′	0.35
Φ25.4mm，Thickness 2mm，Fused Silica Round Windows Number：PQu01E015 Dia(mm)：25.4 ThK(mm)：2 Surface Quality：60-40 PV@632.8nm：λ/2 Parallelism：3′ Clear Aperture：>90% Diameter Tolerance(mm)：+0.0/-0.1 Thk Tolerance(mm)：±0.1 Transmission Range：0.18-2.1μm Substrate Material：Fused Silica Bevel(mm)：0.35 Coating：Uncoated REACH：Compliant ROHS：Compliant
More+ Less	12.7	2	60-40	λ/2	3′	0.35
Φ12.7mm，Thickness 2mm，Fused Silica Round Windows Number：PQu01C011 Dia(mm)：12.7 ThK(mm)：2 Surface Quality：60-40 PV@632.8nm：λ/2 Parallelism：3′ Clear Aperture：>90% Diameter Tolerance(mm)：+0.0/-0.1 Thk Tolerance(mm)：±0.1 Transmission Range：0.18-2.1μm Substrate Material：Fused Silica Bevel(mm)：0.35 Coating：Uncoated REACH：Compliant ROHS：Compliant
More+ Less	5	1	60-40	λ/2	3′	0.35
Φ5mm，Thickness 1mm，Fused Silica Round Windows Number：PQu01A002 Dia(mm)：5 ThK(mm)：1 Surface Quality：60-40 PV@632.8nm：λ/2 Parallelism：3′ Clear Aperture：>90% Diameter Tolerance(mm)：+0.0/-0.1 Thk Tolerance(mm)：±0.1 Transmission Range：0.18-2.1μm Substrate Material：Fused Silica Bevel(mm)：0.35 Coating：Uncoated REACH：Compliant ROHS：Compliant

Material Data
Optical Properties
Transmission Range	0.18-2.1μm
Refractive Index@0.5876μm	1.4585
Physical Properties
Density [g/cm3]	2.21
Melting Point [deg C]	1900
Thermal Conductivity [W/(m×deg C)]	1.35
Thermal Expansion [deg C-1 ]	4.0*10-6
Specific Heat Capacity [J/(Kg*deg C]	0.728*10-3
Young's Modulus [GPa]	7.36
Shear Modulus [GPa]	3.14
Poisson Coefficient	0.17
Chemical Properties
Solubility	Insoluble

Fused Silica Windows（round）

Technical Parameter

Material Data

Transmittance

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