Zinc Sulfide Wedge Windows

Zinc sulfide wedge windows are used as protective windows for electronic sensors or external environmental detectors, and to change the deflection path of light. A design with a wedge-shaped shape, characterized by 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. It can be coated with reflective film, anti reflective film, filter film, spectroscopic film, polarizing film, and metallization film systems.

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	Dia(mm)	ThK(mm)	Wedge Angle	Surface Quality	Surface Accuracy	Bevel(mm)
	Screen Reset 25.4 19	Screen Reset 7	Screen Reset 7.5° 1°	Screen Reset 60-40	Screen Reset 3(1）	Screen Reset 0.35
More+ Less	25.4	7	7.5°	60-40	3(1）	0.35
Φ25.4mm，Thickness 7mm，Wedge Angle 7.5°，Zinc Sulfide Wedge Windows Number：PZS01E018 Dia(mm)：25.4 ThK(mm)：7 Wedge Angle：7.5° Surface Quality：60-40 Surface Accuracy：3(1） Clear Aperture：>90% Diameter Tolerance(mm)：+0.0/-0.1 Thk Tolerance(mm)：±0.1 Wedge Angle Tolerance：±10′ Substrate Material：Zinc Sulfide（ZnS） Transmission Range：0.37-14μm Bevel(mm)：0.35 Coating：Uncoated REACH：Compliant ROHS：Compliant
More+ Less	19	7	1°	60-40	3(1）	0.35
Φ19mm，Thickness 7mm，Wedge Angle 1°，Zinc Sulfide Wedge Windows Number：PZS01D002 Dia(mm)：19 ThK(mm)：7 Wedge Angle：1° Surface Quality：60-40 Surface Accuracy：3(1） Clear Aperture：>90% Diameter Tolerance(mm)：+0.0/-0.1 Thk Tolerance(mm)：±0.1 Wedge Angle Tolerance：±10′ Substrate Material：Zinc Sulfide（ZnS） 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