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See all 38 Products in Family

TECHSPEC^® components are designed, specified, or manufactured by Edmund Optics. Learn More

75mm Diameter, MgF₂ Coated, B270 Window

Stock #48-419

$94.00

Qty 1-5
$94.00

Qty 6
$75.20

Volume Pricing
Request a Quote

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Abbe Number (v_d):

58.3

Diameter (mm):

75.00

Dimensional Tolerance (mm):

±0.25

Thickness (mm):

3.00

Coating:

MgF₂ (400-700nm)

Coating Specification:

R_avg ≤1.75% @ 400 - 700nm

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

9.4

Knoop Hardness (GPa):

542

Young's Modulus (GPa):

71.5

Density (g/cm³):

2.56

Edges:

Ground, Maximum 0.25 Edge Chip

Index of Refraction n_d:

1.522

Poisson's Ratio:

0.22

Substrate:

B270

Surface Flatness:

1λ

Surface Quality:

60-40

Type:

Protective Window

Typical Energy Density Limit:

10 J/cm² @ 532nm, 10ns

Wavelength Range (nm):

400 - 700

Regulatory Compliance

RoHS 2015:

Compliant

Reach 209:

Compliant

Product Family Description

Large Selection of Sizes
Available Uncoated or with a MgF₂ Anti-Reflection Coating
Custom Sizes Available for Volume OEM Requirements

TECHSPEC® B270 Windows are ideal for commercial applications requiring a thin substrate. Available uncoated or with a MgF₂ Anti-Reflection coating, these windows are often used as a protective element between two environments. Custom sizes and coatings are available for OEM applications.