Abbe Number (v_d):

106.22

Bevel:

Protective as needed

Clear Aperture (%):

85

Clear Aperture CA (mm):

43.18

Diameter (mm):

50.80 +0.00/-0.13

Thickness (mm):

4.00 ±0.13

Coating:

Uncoated

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

13.7

Density (g/cm³):

3.18

Edges:

Fine Ground

Index of Refraction n_d:

1.377

Knoop Hardness (kg/mm²):

415

Parallelism (arcmin):

<3

Poisson's Ratio:

0.271

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

Magnesium Fluoride (MgF₂)

Surface Flatness (P-V):

2λ

Surface Quality:

40-20

Type:

Protective Window

Wavelength Range (nm):

120 - 7000

Young's Modulus (GPa):

138

Model Number:

MF-W-50-4

50.8mm Dia., 4mm Thick, Uncoated, ISP Optics Magnesium Fluoride (MgF₂) Window | MF-W-50-4

50.8mm Dia., 4mm Thick, Uncoated, ISP Optics Magnesium Fluoride (MgF2) Window | MF-W-50-4