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Products / Optics / Windows and Diffusers / Visible Windows / Ultra-Thin N-BK7 Windows
See all 32 Products in Family
TECHSPEC® components are designed, specified, or manufactured by Edmund Optics. Learn More

12.5mm Diameter MgF2 Coated, Ultra-Thin N-BK7 Window

Ultra-Thin N-BK7 Windows

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Stock #66-194
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Qty 1-5
£80.33
Qty 6+
£62.90
Volume Pricing
Request Quote
Abbe Number (vd):
64.17
Bevel:
Protective as needed
Clear Aperture CA (mm):
11.25
Diameter (mm):
12.50 +0.00/-0.10
Thickness (mm):
0.20 ±0.025
Coating:
MgF2 (400-700nm)
Coating Specification:
Ravg ≤1.75% @ 400 - 700nm
Coefficient of Thermal Expansion CTE (10-6/°C):
7.1 (-30 to +70°C)
8.3 (+20 to +300°C)
Density (g/cm3):
2.51
Edges:
Fine Ground
Index of Refraction nd:
1.516
Knoop Hardness (kg/mm2):
610
Parallelism (arcsec):
<30
Poisson's Ratio:
0.206
Substrate: Many glass manufacturers offer the same material characteristics under different trade names. Learn More
N-BK7
Surface Quality:
20-10
Transmitted Wavefront, P-V:
<λ/2
Type:
Protective Window
Typical Energy Density Limit:
10 J/cm2 @ 532nm, 10ns
Wavelength Range (nm):
400 - 700
Young's Modulus (GPa):
82

Regulatory Compliance

RoHS 2015:
Compliant
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Reach 219:
Compliant
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Product Family Description

  • Ultra-Thin 0.20mm Thickness
  • Precision N-BK7 Substrate
  • Extremely Lightweight

TECHSPEC® Ultra-Thin N-BK7 Windows are our thinnest windows available and are at least 1/10 the thickness of our traditional N-BK7 windows. Their extremely thin designs make them ideal for both weight and size sensitive applications. Additionally, their high tolerance design yields minimal beam distortion and scatter. They are available uncoated or with a MgF2 anti-reflection coating. For custom sizes or coating options, please contact our Sales Department.

Note: The Ultra-Thin N-BK7 Windows are very fragile. Handle these windows with care.

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12.5/12.7mm Optic Dia., X-Y-Z Translating Optic Mount Adjustable - Linear (XYZ) #62-958 £323.85
Qty 5+ £307.70 Request Quote
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