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

25mm Square MgF2 Coated, B270 Window

See More by SCHOTT Optical Components

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Stock #45-183 20+ In Stock
Quantity Selector - Use the plus and minus buttons to adjust the quantity. +
£37.40
Volume Pricing
Qty 1-5 £37.40 each
Qty 6-25 £29.60 each
Qty 26-99 £28.00 each
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Prices shown are exclusive of VAT/local taxes
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Specifications

#Sorting:
36.00

General

Type:
Protective Window

Physical & Mechanical Properties

Clear Aperture CA (mm):
22.50 x 22.50
Dimensions (mm):
25.00 x 25.00
Thickness (mm):
2.00
Length (mm):
25.00
Width (mm):
25.00
Dimensional Tolerance (mm):
±0.25
Bevel:
Protective as needed
Edges:
Fine Ground
Poisson's Ratio:
0.22
Young's Modulus (GPa):
71.5
Knoop Hardness (kg/mm2):
500.00

Optical Properties

Coating:
MgF2 (632.8nm)
Substrate: Many glass manufacturers offer the same material characteristics under different trade names. Learn More
B270
Index of Refraction (nd):
1.523
Surface Quality:
60-40
Abbe Number (vd):
58.3
Coating Specification:
Ravg ≤1.50% @ 632.8nm (N-BK7)
Wavelength Range (nm):
400 - 700
Surface Flatness (P-V):
1λ
Damage Threshold, By Design: Damage threshold for optical components varies by substrate material and coating. Click here to learn more about this specification.
10 J/cm2 @ 532nm, 10ns

Material Properties

Density (g/cm3):
2.56
Coefficient of Thermal Expansion CTE (10-6/°C):
9.4 (+20 to +300°C)

Regulatory Compliance

RoHS 2015:
Compliant
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Certificate of Conformance:
View
×
Reach 247:
Compliant
×

Custom

Edmund Optics offers comprehensive custom manufacturing services for optical and imaging components tailored to your specific application requirements. Whether in the prototyping phase or preparing for full-scale production, we provide flexible solutions to meet your needs. Our experienced engineers are here to assist—from concept to completion.

Our capabilities include:

  • Custom dimensions, materials, coatings, and more
  • High-precision surface quality and flatness
  • Tight tolerances and complex geometries
  • Scalable production—from prototype to volume

Learn more about our custom manufacturing capabilities or submit an inquiry here.

Product Details

  • Large Selection of Sizes
  • Available Uncoated, MgF2, or VIS-NIR Anti-Reflection (AR) Coated
  • Custom Sizes Available for Volume OEM Requirements

TECHSPEC® B270 Windows offer a high transmission from the visible to the near-infrared (NIR). They have a similar refractive index to N-BK7 while being more cost-effective. These windows are often used as a protective element due to their high solarization stability and chemical resistance, making them ideal for standard window applications. TECHSPEC® B270 Windows are available either uncoated or coated with a MgF2 or VIS-NIR Anti-Reflection (AR) Coating. Both circular and square options are offered in various sizes, and custom sizes and coatings are available for OEM applications. 

Technical Information

Compatible Mounts

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