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Products / Optics / Windows and Diffusers / Visible Windows / B270 Windows
See all 58 Products in Family
TECHSPEC® components are designed, specified, or manufactured by Edmund Optics. Learn More

20mm Diameter MgF2 Coated, B270 Window

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Stock #32-950
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Qty 1-5
C$45.90
Qty 6+
C$36.11
Volume Pricing
Request Quote
Abbe Number (vd):
58.3
Bevel:
Protective as needed
Clear Aperture CA (mm):
18.00
Diameter (mm):
20.00 ±0.25
Thickness (mm):
2.00
Coating:
MgF2 (632.8nm)
Coating Specification:
Ravg ≤1.50% @ 632.8nm (N-BK7)
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
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Reach 219:
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.

Title  Type Compare Stock Number  Price Buy
20.0mm Optic Dia., Optic Mount Fixed #64-559 C$40.50
Qty 10+ C$36.45 Request Quote
  • In Stock
    ×
2.0 - 35.0mm Optic Dia., Three-Screw Adjustable Ring Mount Fixed #03-668 C$75.60
Qty 10+ C$66.83 Request Quote
  • In Stock
    ×
9.5 - 73.0mm Optic Dia., Three-Screw Adjustable Ring Mount Fixed #36-605 C$94.50
Qty 10+ C$83.70 Request Quote
  • In Stock
    ×
5.0 - 25.0mm Optic Height, Metric Bar-Type Optic Holder Fixed #55-529 C$121.50
Qty 10+ C$109.35 Request Quote
  • In Stock
    ×
7.0 - 40.0 Optic Height, English Bar-Type Optic Holder Fixed #03-676 C$121.50
Qty 10+ C$109.35 Request Quote
  • In Stock
    ×
19.5 - 108.0mm Optic Dia., Three-Screw Adjustable Ring Mount Fixed #03-670 C$129.60
Qty 10+ C$114.75 Request Quote
  • In Stock
    ×
7.0 - 67.0 Optic Height, English Bar-Type Optic Holder Fixed #03-669 C$132.30
Qty 10+ C$118.80 Request Quote
  • In Stock
    ×
10.0 - 60.0mm Optic Height, Metric Bar-Type Optic Holder Fixed #55-530 C$132.30
Qty 10+ C$118.80 Request Quote
  • In Stock
    ×
8.0 - 118.0 Optic Height, English Bar-Type Optic Holder Fixed #03-666 C$136.35
Qty 10+ C$122.85 Request Quote
  • In Stock
    ×
2"/50.8mm Diameter, Bar Type Lens / Filter Holder, Quick Start Optical Mounts Fixed #17-530 C$182.25 Request Quote
4.0 - 36.0mm Optic Dia., Self-Centering Jaw Clamp Fixed #16-077 C$183.60
Qty 5+ C$162.00 Request Quote
  • In Stock
    ×
5.0 - 100.0mm Optic Dia., Self-Centering Jaw Clamp Fixed #16-078 C$480.60
Qty 5+ C$423.90 Request Quote
  • In Stock
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