Zinc Selenide Round Windows

Zinc Selenide Windows（round）

Zinc selenide windows are common optical element, with a rectangular shape, used to separate the inside and outside of the optical system and protect the internal components. It has the characteristics of high transparency, high anti reflection, and high thermal stability. It has high transmittance in both visible and infrared bands, as well as low reflectivity and low absorption. Used in equipment such as LiDAR, optical sensors, and spectrometers as a transmission or reflection device for the optical path. 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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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 50.8 38.1 25.4 12.7	Screen Reset 8 6 5 4 3 2 1	Screen Reset 60-40 40-20	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 Selenide Round Windows Number：PZE01H003 Dia(mm)：76.2 ThK(mm)：8 Surface Quality：60-40 PV@632.8nm：λ/4 Parallelism：3′ Clear Aperture：>90% Substrate Material：Zinc Selenide（ZnSe） Diameter Tolerance(mm)：+0.0/-0.1 Thk Tolerance(mm)：±0.1 Transmission Range：0.5-15μm 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 Selenide Round Windows Number：PZE01F055 Dia(mm)：50.8 ThK(mm)：6 Surface Quality：60-40 PV@632.8nm：λ/4 Parallelism：3′ Clear Aperture：>90% Substrate Material：Zinc Selenide（ZnSe） Diameter Tolerance(mm)：+0.0/-0.1 Thk Tolerance(mm)：±0.1 Transmission Range：0.5-15μm 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 Selenide Round Windows Number：PZE01F054 Dia(mm)：50.8 ThK(mm)：5 Surface Quality：60-40 PV@632.8nm：λ/4 Parallelism：3′ Clear Aperture：>90% Substrate Material：Zinc Selenide（ZnSe） Diameter Tolerance(mm)：+0.0/-0.1 Thk Tolerance(mm)：±0.1 Transmission Range：0.5-15μm 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 Selenide Round Windows Number：PZE01F053 Dia(mm)：50.8 ThK(mm)：4 Surface Quality：60-40 PV@632.8nm：λ/4 Parallelism：3′ Clear Aperture：>90% Substrate Material：Zinc Selenide（ZnSe） Diameter Tolerance(mm)：+0.0/-0.1 Thk Tolerance(mm)：±0.1 Transmission Range：0.5-15μm 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 Selenide Round Windows Number：PZE01F052 Dia(mm)：50.8 ThK(mm)：3 Surface Quality：60-40 PV@632.8nm：λ/4 Parallelism：3′ Clear Aperture：>90% Substrate Material：Zinc Selenide（ZnSe） Diameter Tolerance(mm)：+0.0/-0.1 Thk Tolerance(mm)：±0.1 Transmission Range：0.5-15μm Bevel(mm)：0.35 Coating：Uncoated REACH：Compliant ROHS：Compliant
More+ Less	38.1	5	60-40	λ/4	3′	0.35
Φ38.1mm，Thickness 5mm，Zinc Selenide Round Windows Number：PZE01F021 Dia(mm)：38.1 ThK(mm)：5 Surface Quality：60-40 PV@632.8nm：λ/4 Parallelism：3′ Clear Aperture：>90% Substrate Material：Zinc Selenide（ZnSe） Diameter Tolerance(mm)：+0.0/-0.1 Thk Tolerance(mm)：±0.1 Transmission Range：0.5-15μm Bevel(mm)：0.35 Coating：Uncoated REACH：Compliant ROHS：Compliant
More+ Less	38.1	4	60-40	λ/4	3′	0.35
Φ38.1mm，Thickness 4mm，Zinc Selenide Round Windows Number：PZE01F020 Dia(mm)：38.1 ThK(mm)：4 Surface Quality：60-40 PV@632.8nm：λ/4 Parallelism：3′ Clear Aperture：>90% Substrate Material：Zinc Selenide（ZnSe） Diameter Tolerance(mm)：+0.0/-0.1 Thk Tolerance(mm)：±0.1 Transmission Range：0.5-15μm Bevel(mm)：0.35 Coating：Uncoated REACH：Compliant ROHS：Compliant
More+ Less	38.1	3	60-40	λ/4	3′	0.35
Φ38.1mm，Thickness 3mm，Zinc Selenide Round Windows Number：PZE01F019 Dia(mm)：38.1 ThK(mm)：3 Surface Quality：60-40 PV@632.8nm：λ/4 Parallelism：3′ Clear Aperture：>90% Substrate Material：Zinc Selenide（ZnSe） Diameter Tolerance(mm)：+0.0/-0.1 Thk Tolerance(mm)：±0.1 Transmission Range：0.5-15μm Bevel(mm)：0.35 Coating：Uncoated REACH：Compliant ROHS：Compliant
More+ Less	25.4	4	60-40	λ/4	3′	0.35
Φ25.4mm，Thickness 4mm，Zinc Selenide Round Windows Number：PZE01E041 Dia(mm)：25.4 ThK(mm)：4 Surface Quality：60-40 PV@632.8nm：λ/4 Parallelism：3′ Clear Aperture：>90% Substrate Material：Zinc Selenide（ZnSe） Diameter Tolerance(mm)：+0.0/-0.1 Thk Tolerance(mm)：±0.1 Transmission Range：0.5-15μm Bevel(mm)：0.35 Coating：Uncoated REACH：Compliant ROHS：Compliant
More+ Less	25.4	3	60-40	λ/4	3′	0.35
Φ25.4mm，Thickness 3mm，Zinc Selenide Round Windows Number：PZE01E040 Dia(mm)：25.4 ThK(mm)：3 Surface Quality：60-40 PV@632.8nm：λ/4 Parallelism：3′ Clear Aperture：>90% Substrate Material：Zinc Selenide（ZnSe） Diameter Tolerance(mm)：+0.0/-0.1 Thk Tolerance(mm)：±0.1 Transmission Range：0.5-15μm Bevel(mm)：0.35 Coating：Uncoated REACH：Compliant ROHS：Compliant

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
Optical Properties	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 Windows（round）

Technical Parameter

Material Data

Transmittance

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