Silicon Round Windows

Silicon Windows（round）

Silicon round windows have high hardness and are insoluble in water. They have good light transmittance in the 1-7 μ m wavelength range and good light transmittance in the far-infrared wavelength range of 30-300 μ m. Used as a protective window for electronic sensors or external environment detectors. Used to separate the environment on both sides, such as separating the inside and outside of the instrument, to isolate the inside and outside of the instrument and protect internal components. It has high transmittance, low reflectivity, and low absorption in the visible and infrared bands. UM OPTICS can provide different types of window sheets such as circular, rectangular, wedge-shaped, perforated, and stepped sheets.

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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 50.8 49 41 38.1 38 32 25.4 25 15 13 12.7 6	Screen Reset 3 6 2 5 0.5 4 1	Screen Reset 40-20 60-40	Screen Reset λ/2 λ	Screen Reset 3′	Screen Reset 0.35
More+ Less	50.8	3	40-20	λ/2	3′	0.35
Φ50.8mm，Thickness 3mm，Silicon Round Windows Number：PSi01F010 Dia(mm)：50.8 ThK(mm)：3 Surface Quality：40-20 PV@632.8nm：λ/2 Parallelism：3′ Clear Aperture：>90% Diameter Tolerance(mm)：+0.0/-0.1 Thk Tolerance(mm)：±0.1 Transmission Range：1.2-15μm Substrate Material：Silicon（Si） Bevel(mm)：0.35 Coating：Uncoated REACH：Compliant ROHS：Compliant
More+ Less	49	6	60-40	λ/2	3′	0.35
Φ49mm，Thickness 6mm，Silicon Round Windows Number：PSi01F006 Dia(mm)：49 ThK(mm)：6 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：1.2-15μm Substrate Material：Silicon（Si） Bevel(mm)：0.35 Coating：Uncoated REACH：Compliant ROHS：Compliant
More+ Less	41	3	60-40	λ	3′	0.35
Φ41mm，Thickness 3mm，Silicon Round Windows Number：PSi01F005 Dia(mm)：41 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：1.2-15μm Substrate Material：Silicon（Si） Bevel(mm)：0.35 Coating：Uncoated REACH：Compliant ROHS：Compliant
More+ Less	38.1	2	40-20	λ/2	3′	0.35
Φ38.1mm，Thickness 2mm，Silicon Round Windows Number：PSi01F004 Dia(mm)：38.1 ThK(mm)：2 Surface Quality：40-20 PV@632.8nm：λ/2 Parallelism：3′ Clear Aperture：>90% Diameter Tolerance(mm)：+0.0/-0.1 Thk Tolerance(mm)：±0.1 Transmission Range：1.2-15μm Substrate Material：Silicon（Si） Bevel(mm)：0.35 Coating：Uncoated REACH：Compliant ROHS：Compliant
More+ Less	38	6	60-40	λ/2	3′	0.35
Φ38mm，Thickness 6mm，Silicon Round Windows Number：PSi01F003 Dia(mm)：38 ThK(mm)：6 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：1.2-15μm Substrate Material：Silicon（Si） Bevel(mm)：0.35 Coating：Uncoated REACH：Compliant ROHS：Compliant
More+ Less	32	3	60-40	λ/2	3′	0.35
Φ32mm，Thickness 3mm，Silicon Round Windows Number：PSi01F001 Dia(mm)：32 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：1.2-15μm Substrate Material：Silicon（Si） Bevel(mm)：0.35 Coating：Uncoated REACH：Compliant ROHS：Compliant
More+ Less	25.4	5	40-20	λ/2	3′	0.35
Φ25.4mm，Thickness 5mm，Silicon Round Windows Number：PSi01E013 Dia(mm)：25.4 ThK(mm)：5 Surface Quality：40-20 PV@632.8nm：λ/2 Parallelism：3′ Clear Aperture：>90% Diameter Tolerance(mm)：+0.0/-0.1 Thk Tolerance(mm)：±0.1 Transmission Range：1.2-15μm Substrate Material：Silicon（Si） Bevel(mm)：0.35 Coating：Uncoated REACH：Compliant ROHS：Compliant
More+ Less	25.4	3	60-40	λ/2	3′	0.35
Φ25.4mm，Thickness 3mm，Silicon Round Windows Number：PSi01E011 Dia(mm)：25.4 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：1.2-15μm Substrate Material：Silicon（Si） Bevel(mm)：0.35 Coating：Uncoated REACH：Compliant ROHS：Compliant
More+ Less	25.4	2	40-20	λ/2	3′	0.35
Φ25.4mm，Thickness 2mm，Silicon Round Windows Number：PSi01E010 Dia(mm)：25.4 ThK(mm)：2 Surface Quality：40-20 PV@632.8nm：λ/2 Parallelism：3′ Clear Aperture：>90% Diameter Tolerance(mm)：+0.0/-0.1 Thk Tolerance(mm)：±0.1 Transmission Range：1.2-15μm Substrate Material：Silicon（Si） Bevel(mm)：0.35 Coating：Uncoated REACH：Compliant ROHS：Compliant
More+ Less	25.4	0.5	60-40	λ/2	3′	0.35
Φ25.4mm，Thickness 0.5mm，Silicon Round Windows Number：PSi01E007 Dia(mm)：25.4 ThK(mm)：0.5 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：1.2-15μm Substrate Material：Silicon（Si） Bevel(mm)：0.35 Coating：Uncoated REACH：Compliant ROHS：Compliant

Material Data
Optical Properties
Transmission Range	1.2-15μm
Refractive Index	3.41776%@10μm
Reflection Loss	46.1%@10μm
Structure	Single crystal,synthetic
Cleavage Planes	<111>
Physical Properties
Density [g/cm3]	2.33
Melting Point [℃]	1414
Thermal Conductivity [W/(m×K)]	163 @ 313K
Thermal Expansion [10-6/K]	2.6 @ 293K
Knoop Hardness [kg/mm2]	1100
Specific Heat Capacity [J/(kg×K)]	712.8
Dielectric Constant	13 @f= 9.37GHz
Young's Modulus (E) [GPa]	130.91
Shear Modulus(G) [GPa]	79.92
Bulk Modulus(K) [GPa]	101.97
Poisson Coefficient	0.266
Chemical Properties
Solubility / g/L	None
Molecular Weight / g/mol	28.09

Silicon Windows（round）

Technical Parameter

Material Data

Transmittance

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