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Products / Optics / Windows and Diffusers / Visible Windows / B270 Windows
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
×
Qty 1-5
$95.00
Qty 6+
$76.20
Volume Pricing
Request Quote
Abbe Number (vd):
58.3
Bevel:
Protective as needed
Clear Aperture CA (mm):
70.00
Diameter (mm):
75.00 ±0.25
Thickness (mm):
3.00
Coating:
MgF2 (400-700nm)
Coating Specification:
Ravg ≤1.75% @ 400 - 700nm
Coefficient of Thermal Expansion CTE (10-6/°C):
9.4 (+20 to +300°C)
Density (g/cm3):
2.56
Edges:
Fine Ground
Index of Refraction nd:
1.523
Knoop Hardness (kg/mm2):
500
Poisson's Ratio:
0.22
Substrate: Many glass manufacturers offer the same material characteristics under different trade names. Learn More
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
Young's Modulus (GPa):
71.5

Regulatory Compliance

RoHS 2015:
Compliant
×
Reach 211:
Compliant
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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.

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