Zinc Selenide Plano-convex Lens

Zinc selenide plano-convex lenses have the characteristics of low dispersion and low absorption, and have high resistance to thermal shock. They are commonly used for focusing or collimating medium wave infrared (MWIR) and long wave infrared (LWIR) spectra and are an ideal choice for thermal imaging systems. It can be coated with MgF2, UV-AR, UV-VIS, VIS-EXT, VIS-NIR, NIR I, NIR II, Telecom NIR, SWIR, SWIR, YAG-BBAR and other film systems. UM OPTICS has complete production equipment and experience in optical crystals, components, and coating, and can provide high-quality zinc selenide flat convex lenses.

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	Dia(mm)	Focal Length(mm)	Center Thickness(mm)	Edge Thickness(mm)	Radius of Curvature(mm)
	Screen Reset 50.8 38.1 25.4 12.7	Screen Reset F1000 F500 F300 F254 F200 F150 F127 F100 F75 F2000 F76.2 F63.5 F50.8 F25.4	Screen Reset 2.7 3 3.3 3.4 3.7 4 4.3 4.8 5.6 2.1 2.3 2.5 2.9 4.1 4.6 2.2 2.4 2.6 2.8 3.1	Screen Reset 2.5 2	Screen Reset 1404 698.17 424.67 356.51 281.2 209.91 180.32 139.96 106.15 2808 89.14 71.46 281.20 35.97
More+ Less	50.8	F1000	2.7	2.5	1404
Φ50.8mm，F1000，Zinc Selenide Planoconvex Lenses Number：PZE03F020 Dia(mm)：50.8 Focal Length(mm)：F1000 Center Thickness(mm)：2.7 Edge Thickness(mm)：2.5 Design Wavelength(μm)：10.6 Radius of Curvature(mm)：1404 Surface Quality：60-40 Irregularity@632.8nm：λ/4 Diameter Tolerance(mm)：+0.0/-0.1 Thk Tolerance(mm)：±0.1 Substrate Material：Zinc Selenide（ZnSe） Centering：<3′ Clear Aperture：>90% Coating：Uncoated REACH：Compliant ROHS：Compliant
More+ Less	50.8	F500	3	2.5	698.17
Φ50.8mm，F500，Zinc Selenide Planoconvex Lenses Number：PZE03F019 Dia(mm)：50.8 Focal Length(mm)：F500 Center Thickness(mm)：3 Edge Thickness(mm)：2.5 Design Wavelength(μm)：10.6 Radius of Curvature(mm)：698.17 Surface Quality：60-40 Irregularity@632.8nm：λ/4 Diameter Tolerance(mm)：+0.0/-0.1 Thk Tolerance(mm)：±0.1 Substrate Material：Zinc Selenide（ZnSe） Centering：<3′ Clear Aperture：>90% Coating：Uncoated REACH：Compliant ROHS：Compliant
More+ Less	50.8	F300	3.3	2.5	424.67
Φ50.8mm，F300，Zinc Selenide Planoconvex Lenses Number：PZE03F018 Dia(mm)：50.8 Focal Length(mm)：F300 Center Thickness(mm)：3.3 Edge Thickness(mm)：2.5 Design Wavelength(μm)：10.6 Radius of Curvature(mm)：424.67 Surface Quality：60-40 Irregularity@632.8nm：λ/4 Diameter Tolerance(mm)：+0.0/-0.1 Thk Tolerance(mm)：±0.1 Substrate Material：Zinc Selenide（ZnSe） Centering：<3′ Clear Aperture：>90% Coating：Uncoated REACH：Compliant ROHS：Compliant
More+ Less	50.8	F254	3.4	2.5	356.51
Φ50.8mm，F254，Zinc Selenide Planoconvex Lenses Number：PZE03F017 Dia(mm)：50.8 Focal Length(mm)：F254 Center Thickness(mm)：3.4 Edge Thickness(mm)：2.5 Design Wavelength(μm)：10.6 Radius of Curvature(mm)：356.51 Surface Quality：60-40 Irregularity@632.8nm：λ/4 Diameter Tolerance(mm)：+0.0/-0.1 Thk Tolerance(mm)：±0.1 Substrate Material：Zinc Selenide（ZnSe） Centering：<3′ Clear Aperture：>90% Coating：Uncoated REACH：Compliant ROHS：Compliant
More+ Less	50.8	F200	3.7	2.5	281.2
Φ50.8mm，F200，Zinc Selenide Planoconvex Lenses Number：PZE03F016 Dia(mm)：50.8 Focal Length(mm)：F200 Center Thickness(mm)：3.7 Edge Thickness(mm)：2.5 Design Wavelength(μm)：10.6 Radius of Curvature(mm)：281.2 Surface Quality：60-40 Irregularity@632.8nm：λ/4 Diameter Tolerance(mm)：+0.0/-0.1 Thk Tolerance(mm)：±0.1 Substrate Material：Zinc Selenide（ZnSe） Centering：<3′ Clear Aperture：>90% Coating：Uncoated REACH：Compliant ROHS：Compliant
More+ Less	50.8	F150	4	2.5	209.91
Φ50.8mm，F150，Zinc Selenide Planoconvex Lenses Number：PZE03F015 Dia(mm)：50.8 Focal Length(mm)：F150 Center Thickness(mm)：4 Edge Thickness(mm)：2.5 Design Wavelength(μm)：10.6 Radius of Curvature(mm)：209.91 Surface Quality：60-40 Irregularity@632.8nm：λ/4 Diameter Tolerance(mm)：+0.0/-0.1 Thk Tolerance(mm)：±0.1 Substrate Material：Zinc Selenide（ZnSe） Centering：<3′ Clear Aperture：>90% Coating：Uncoated REACH：Compliant ROHS：Compliant
More+ Less	50.8	F127	4.3	2.5	180.32
Φ50.8mm，F127，Zinc Selenide Planoconvex Lenses Number：PZE03F014 Dia(mm)：50.8 Focal Length(mm)：F127 Center Thickness(mm)：4.3 Edge Thickness(mm)：2.5 Design Wavelength(μm)：10.6 Radius of Curvature(mm)：180.32 Surface Quality：60-40 Irregularity@632.8nm：λ/4 Diameter Tolerance(mm)：+0.0/-0.1 Thk Tolerance(mm)：±0.1 Substrate Material：Zinc Selenide（ZnSe） Centering：<3′ Clear Aperture：>90% Coating：Uncoated REACH：Compliant ROHS：Compliant
More+ Less	50.8	F100	4.8	2.5	139.96
Φ50.8mm，F100，Zinc Selenide Planoconvex Lenses Number：PZE03F013 Dia(mm)：50.8 Focal Length(mm)：F100 Center Thickness(mm)：4.8 Edge Thickness(mm)：2.5 Design Wavelength(μm)：10.6 Radius of Curvature(mm)：139.96 Surface Quality：60-40 Irregularity@632.8nm：λ/4 Diameter Tolerance(mm)：+0.0/-0.1 Thk Tolerance(mm)：±0.1 Substrate Material：Zinc Selenide（ZnSe） Centering：<3′ Clear Aperture：>90% Coating：Uncoated REACH：Compliant ROHS：Compliant
More+ Less	50.8	F75	5.6	2.5	106.15
Φ50.8mm，F75，Zinc Selenide Planoconvex Lenses Number：PZE03F012 Dia(mm)：50.8 Focal Length(mm)：F75 Center Thickness(mm)：5.6 Edge Thickness(mm)：2.5 Design Wavelength(μm)：10.6 Radius of Curvature(mm)：106.15 Surface Quality：60-40 Irregularity@632.8nm：λ/4 Diameter Tolerance(mm)：+0.0/-0.1 Thk Tolerance(mm)：±0.1 Substrate Material：Zinc Selenide（ZnSe） Centering：<3′ Clear Aperture：>90% Coating：Uncoated REACH：Compliant ROHS：Compliant
More+ Less	38.1	F2000	2.1	2	2808
Φ38.1mm，F2000，Zinc Selenide Planoconvex Lenses Number：PZE03F011 Dia(mm)：38.1 Focal Length(mm)：F2000 Center Thickness(mm)：2.1 Edge Thickness(mm)：2 Design Wavelength(μm)：10.6 Radius of Curvature(mm)：2808 Surface Quality：60-40 Irregularity@632.8nm：λ/4 Diameter Tolerance(mm)：+0.0/-0.1 Thk Tolerance(mm)：±0.1 Substrate Material：Zinc Selenide（ZnSe） Centering：<3′ Clear Aperture：>90% Coating：Thickness REACH：Uncoated ROHS：Uncoated

Material Data
Physical Properties
Crystal Structure	Cubic
Density [g/cm3]	5.27
Resistivity [Ω.cm]	～1012
Melting Point [℃]	1525
Chemical Purity [%]	99.9996
Thermal Expansion [1/K]	7.110-6@273k 7.810-6@373k 8.3*10-8@473k
Thermal Conductivity [J/k.m.s]	18.0@298k
Specific Heat Capacity [J/g.K]	0.339@298k
Knoop Hardness [kg/mm2]	110
Bending Strength [Mpa]	55
Young's Modulus [GPa]	67.2
Poisson's Coefficient	0.28
Optical Properties
Transmission Range	0.5-22μm
Refractive index inhomogeneity [△n/n]	<3*10-6@632.8μm
Absorption Coefficient [1/cm]	5.010-3@1300nm 7.010-4@2700nm 4.010-4@3800nm 4.010-4@5250nm 5.0*10-4@10600nm
Thermal light coefficient [1/k,298-358k]	1.0710-4@632.80nm 7.010-5@1150nm 6.210-5@3390nm 6.110-5@10600μm

Wavelength(nm)	Refractive Index(n)	Wavelength(nm)	Refractive Index(n)
620	2.5994	10600	2.4028
1000	2.4892	13000	2.385
3800	2.4339	14600	2.3705
5000	2.4295	16600	2.3487
7000	2.4218	17800	2.3333
9000	2.4122	18200	2.3278

Incidence Mode	Damage Threshold(J/cm2)
Normal Incidence	>20
Brewster's Corner	>15

Zinc Selenide Plano-convex Lens

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