Zinc Sulfide Round Windows

Zinc Sulfide Windows（round）

Zinc sulfide round windows are used as protective windows for electronic sensors or external environmental detectors. The shape is circular, used to separate the inside and outside of the instrument and protect the internal components. The characteristics are low absorption, low scattering, and hardness and impact resistance. It can have high transmittance in both visible light and infrared, making it an ideal choice for systems with visible light and medium or long wave infrared sensors. UM OPTICS can provide different types of window sheets such as circular, rectangular, wedge-shaped, perforated, and stepped sheets.

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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 63.5 50.8 50 38.1 32 25.4 20 19 15 13 12.7 12.5 12 10	Screen Reset 8 6 5 4 3 1 2	Screen Reset 60-40	Screen Reset λ/4	Screen Reset 3′	Screen Reset 0.35
More+ Less	76.2	8	60-40	λ/4	3′	0.35
Φ76.2mm，Thickness 8mm，Zinc Sulfide Round Windows Number：PZS01H002 Dia(mm)：76.2 ThK(mm)：8 Surface Quality：60-40 PV@632.8nm：λ/4 Parallelism：3′ Clear Aperture：>90% Substrate Material：Zinc Sulfide（ZnS） Diameter Tolerance(mm)：+0.0/-0.1 Thk Tolerance(mm)：±0.1 Transmission Range：0.37-14μm Bevel(mm)：0.35 Coating：Uncoated REACH：Compliant ROHS：Compliant
More+ Less	76.2	6	60-40	λ/4	3′	0.35
Φ76.2mm，Thickness 6mm，Zinc Sulfide Round Windows Number：PZS01H001 Dia(mm)：76.2 ThK(mm)：6 Surface Quality：60-40 PV@632.8nm：λ/4 Parallelism：3′ Clear Aperture：>90% Substrate Material：Zinc Sulfide（ZnS） Diameter Tolerance(mm)：+0.0/-0.1 Thk Tolerance(mm)：±0.1 Transmission Range：0.37-14μm Bevel(mm)：0.35 Coating：Uncoated REACH：Compliant ROHS：Compliant
More+ Less	63.5	8	60-40	λ/4	3′	0.35
Φ63.5mm，Thickness 8mm，Zinc Sulfide Round Windows Number：PZS01G002 Dia(mm)：63.5 ThK(mm)：8 Surface Quality：60-40 PV@632.8nm：λ/4 Parallelism：3′ Clear Aperture：>90% Substrate Material：Zinc Sulfide（ZnS） Diameter Tolerance(mm)：+0.0/-0.1 Thk Tolerance(mm)：±0.1 Transmission Range：0.37-14μm Bevel(mm)：0.35 Coating：Uncoated REACH：Compliant ROHS：Compliant
More+ Less	63.5	6	60-40	λ/4	3′	0.35
Φ63.5mm，Thickness 6mm，Zinc Sulfide Round Windows Number：PZS01G001 Dia(mm)：63.5 ThK(mm)：6 Surface Quality：60-40 PV@632.8nm：λ/4 Parallelism：3′ Clear Aperture：>90% Substrate Material：Zinc Sulfide（ZnS） Diameter Tolerance(mm)：+0.0/-0.1 Thk Tolerance(mm)：±0.1 Transmission Range：0.37-14μm Bevel(mm)：0.35 Coating：Uncoated REACH：Compliant ROHS：Compliant
More+ Less	50.8	6	60-40	λ/4	3′	0.35
Φ50.8mm，Thickness 6mm，Zinc Sulfide Round Windows Number：PZS01F015 Dia(mm)：50.8 ThK(mm)：6 Surface Quality：60-40 PV@632.8nm：λ/4 Parallelism：3′ Clear Aperture：>90% Substrate Material：Zinc Sulfide（ZnS） Diameter Tolerance(mm)：+0.0/-0.1 Thk Tolerance(mm)：±0.1 Transmission Range：0.37-14μm Bevel(mm)：0.35 Coating：Uncoated REACH：Compliant ROHS：Compliant
More+ Less	50.8	5	60-40	λ/4	3′	0.35
Φ50.8mm，Thickness 5mm，Zinc Sulfide Round Windows Number：PZS01F014 Dia(mm)：50.8 ThK(mm)：5 Surface Quality：60-40 PV@632.8nm：λ/4 Parallelism：3′ Clear Aperture：>90% Substrate Material：Zinc Sulfide（ZnS） Diameter Tolerance(mm)：+0.0/-0.1 Thk Tolerance(mm)：±0.1 Transmission Range：0.37-14μm Bevel(mm)：0.35 Coating：Uncoated REACH：Compliant ROHS：Compliant
More+ Less	50.8	4	60-40	λ/4	3′	0.35
Φ50.8mm，Thickness 4mm，Zinc Sulfide Round Windows Number：PZS01F013 Dia(mm)：50.8 ThK(mm)：4 Surface Quality：60-40 PV@632.8nm：λ/4 Parallelism：3′ Clear Aperture：>90% Substrate Material：Zinc Sulfide（ZnS） Diameter Tolerance(mm)：+0.0/-0.1 Thk Tolerance(mm)：±0.1 Transmission Range：0.37-14μm Bevel(mm)：0.35 Coating：Uncoated REACH：Compliant ROHS：Compliant
More+ Less	50.8	3	60-40	λ/4	3′	0.35
Φ50.8mm，Thickness 3mm，Zinc Sulfide Round Windows Number：PZS01F012 Dia(mm)：50.8 ThK(mm)：3 Surface Quality：60-40 PV@632.8nm：λ/4 Parallelism：3′ Clear Aperture：>90% Substrate Material：Zinc Sulfide（ZnS） Diameter Tolerance(mm)：+0.0/-0.1 Thk Tolerance(mm)：±0.1 Transmission Range：0.37-14μm Bevel(mm)：0.35 Coating：Uncoated REACH：Compliant ROHS：Compliant
More+ Less	50	1	60-40	λ/4	3′	0.35
Φ50mm，Thickness 1mm，Zinc Sulfide Round Windows Number：PZS01F011 Dia(mm)：50 ThK(mm)：1 Surface Quality：60-40 PV@632.8nm：λ/4 Parallelism：3′ Clear Aperture：>90% Substrate Material：Zinc Sulfide（ZnS） Diameter Tolerance(mm)：+0.0/-0.1 Thk Tolerance(mm)：±0.1 Transmission Range：0.37-14μm Bevel(mm)：0.35 Coating：Uncoated REACH：Compliant ROHS：Compliant
More+ Less	50	3	60-40	λ/4	3′	0.35
Φ50mm，Thickness 3mm，Zinc Sulfide Round Windows Number：PZS01F010 Dia(mm)：50 ThK(mm)：3 Surface Quality：60-40 PV@632.8nm：λ/4 Parallelism：3′ Clear Aperture：>90% Substrate Material：Zinc Sulfide（ZnS） Diameter Tolerance(mm)：+0.0/-0.1 Thk Tolerance(mm)：±0.1 Transmission Range：0.37-14μm Bevel(mm)：0.35 Coating：Uncoated REACH：Compliant ROHS：Compliant

Material Data
Physical Properties	CVD ZnS	Multispectral CVD ZnS
Density [g/cm3]	4.09	4.09
Resistivity [Ω.cm]	～1012	～101.3
Melting Point [℃]	1827
Chemical Purity [%]	99.9996	99.9996
Thermal Expansion [1/K]	6.610-6@273k 7.310-6@373k	6.310-6@273k 7.010-6@373k
Thermal Conductivity [J/k.m.s]	16.7@298k	27.2@298k
Specific Heat Capacity [J/g.K]	0.469@298k	0.515@298k
Knoop Hardness [kg/mm2]	200-235	160
Bending Strength [Mpa]	103
Young's Modulus [GPa]	74.5	74.5
Poisson's Coefficient	0.29	0.29
Optical Properties
Transmission Range	1-14μm	0.37-14μm
Refractive index in homogeneity [△n/n]	<7.3*10-4@10.6μm	<0.2*10-4@632.8nm
Absorption Coefficient [1/cm]	0.2@10.6μm	0.2@10.6μm
Thermal light coefficient [1/k,298-358k]	4.610-5@1150nm 4.310-5@3390nm 4.1*10-5@10.6μm	5.4310-5@632.8nm 4.2110-5@1150nm 3.87*10-5@3390nm

CVD ZnS
Wavelength(nm)	Refractive Index(n)	Wavelength(nm)	Refractive Index(n)
620	2.355	9800	2.203
1000	2.292	10600	2.192
3800	2.253	11400	2.18
5000	2.246	12200	2.167
7000	2.232	13800	2.132
9000	2.212	14200	2.126

Multispectral CVD ZnS
Wavelength(nm)	Refractive Index(n)	Wavelength(nm)	Refractive Index(n)
400	2.545	8000	2.223
1010	2.292	9000	2.213
2060	2.264	10000	2.201
3500	2.255	11250	2.183
4500	2.25	12000	2.171
5000	2.247	13000	2.153

Zinc Sulfide Windows（round）

Technical Parameter

Material Data

Transmittance

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