Bevel:

Protective as needed

Clear Aperture (%):

85

Clear Aperture CA (mm):

64.77

Diameter (mm):

76.20 +0.00/-0.13

Thickness (mm):

8.00 ±0.13

Coating:

Uncoated

Coefficient of Thermal Expansion CTE (10^-6/°C):

7.57

Density (g/cm³):

5.27

Edges:

Fine Ground

Index of Refraction n_d:

2.631

Knoop Hardness (kg/mm²):

120

Parallelism (arcmin):

<3

Poisson's Ratio:

0.28

Substrate: Many glass manufacturers offer the same material characteristics under different trade names. Learn More

Zinc Selenide (ZnSe)

Surface Flatness (P-V):

λ/20 @ 10.6μm

Surface Quality:

60-40

Type:

Protective Window

Wavelength Range (nm):

600 - 18000

Young's Modulus (GPa):

67.2

Model Number:

ZC-W-76-8

76.2mm Dia., 8mm Thick, Uncoated, ISP Optics Zinc Selenide (ZnSe) Window | ZC-W-76-8

Protect your investment.