eo_logo
  • Country/Region
  • cart   
 
See all 206 Products in Family
TECHSPEC® components are designed, specified, or manufactured by Edmund Optics. Learn More

25mm Dia., 3mm Thick, Uncoated λ/4 N-BK7 Window

Stock #36-993
×
Qty 1-5
£44.63
Qty 6+
£35.70
Volume Pricing
Request Quote
Abbe Number (vd):
64.17
Bevel:
Protective as needed
Clear Aperture (%):
90
Clear Aperture CA (mm):
22.50
Diameter (mm):
25.00 +0.0/-0.25
Thickness (mm):
3.00 ±0.20
Coating:
Uncoated
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 (arcmin):
<1
Poisson's Ratio:
0.206
Substrate: Many glass manufacturers offer the same material characteristics under different trade names. Learn More
Surface Flatness:
λ/4
Surface Quality:
60-40
Type:
Protective Window
Wavelength Range (nm):
350 - 2200
Young's Modulus (GPa):
82

Regulatory Compliance

RoHS 2015:
Reach 209:

Product Family Description

  • λ/4 Surface Flatness
  • Broadband Anti-Reflection Coating Options Available
  • Custom Coatings and Sizes Available for Volume OEM Quantities
  • Also Available with Laser Line V-Coats

TECHSPEC® λ/4 N-BK7 Precision Windows are ideally suited for industrial and low power laser applications. The high tolerance design yields minimal beam distortion and scatter. Broadband coating options extend the range of these precision windows through the visible and near-infrared spectra.

Title  Compare Stock Number  Price Buy
25.0/25.4mm Optic Dia., Precision Gimbal Mount #54-999 £218.66
Qty 5+ £196.99 Request Quote
  • 2-3 days
    ×
8.0 - 118.0 Optic Height, English Bar-Type Optic Holder #03-666 £80.96
Qty 10+ £72.89 Request Quote
  • In Stock
    ×
7.0 - 67.0 Optic Height, English Bar-Type Optic Holder #03-669 £77.56
Qty 10+ £69.91 Request Quote
  • 2-3 days
    ×
7.0 - 40.0 Optic Height, English Bar-Type Optic Holder #03-676 £72.25
Qty 10+ £65.02 Request Quote
  • 2-3 days
    ×
5.0 - 25.0mm Optic Height, Metric Bar-Type Optic Holder #55-529 £72.25
Qty 10+ £65.02 Request Quote
  • In Stock
    ×
10.0 - 60.0mm Optic Height, Metric Bar-Type Optic Holder #55-530 £77.56
Qty 10+ £69.91 Request Quote
  • In Stock
    ×
2.0 - 35.0mm Optic Dia., Three-Screw Adjustable Ring Mount #03-668 £43.35
Qty 10+ £39.10 Request Quote
  • Contact Us
    ×
19.5 - 108.0mm Optic Dia., Three-Screw Adjustable Ring Mount #03-670 £73.74
Qty 10+ £66.51 Request Quote
  • 2-3 days
    ×
9.5 - 73.0mm Optic Dia., Three-Screw Adjustable Ring Mount #36-605 £54.19
Qty 10+ £48.88 Request Quote
  • In Stock
    ×
25.0/25.4mm Optic Dia., Optical Cell Assembly #36-461 £66.94
Qty 10+ £60.35 Request Quote
  • 2-3 days
    ×
25.0/25.4mm Optic Dia., Kinematic Mount, 2-Screws #58-851 £84.15
Qty 5+ £75.86 Request Quote
  • In Stock
    ×
25.0/25.4mm Optic Dia., Kinematic Mount, 3-Screws #58-854 £92.65
Qty 5+ £83.51 Request Quote
  • In Stock
    ×
25.0mm Optic Dia., Optic Mount #64-560 £32.51
Qty 10+ £29.32 Request Quote
  • In Stock
    ×
25.0/25.4mm Optic Dia., L-Slot Direct Mount #36-410 £45.90 Request Quote
  • 2-3 days
    ×
25.0/25.4mm Optic Dia., L-Slot and Rotation Direct Mount #36-411 £67.15 Request Quote
  • 2-3 days
    ×
25.0/25.4mm Optic Dia., Side Flange Direct Mount #36-414 £45.90 Request Quote
  • 2-3 days
    ×
25.0/25.4mm Optic Dia., SM1 Thin Mount, M4 #13-787 £13.60 Request Quote
  • 2-3 days
    ×
25.0/25.4mm Optic Dia., SM1 Thin Mount, 8-32 #13-788 £13.60 Request Quote
  • 2-3 days
    ×
25.0/25.4mm Optic Dia., 5 Axes Optical Mount #13-776 £315.35
Qty 5+ £299.63 Request Quote
  • Contact Us
    ×
25.0/25.4mm Optic Dia., X-Y Translating Optic Mount #62-956 £191.46
Qty 5+ £181.90 Request Quote
  • In Stock
    ×
25.0/25.4mm Optic Dia., X-Y-Z Translating Optic Mount #62-959 £376.34
Qty 5+ £338.72 Request Quote
  • In Stock
    ×
4.0 - 36.0mm Optic Dia., Self-Centering Jaw Clamp #16-077 New
×
£110.50
Qty 5+ £99.45 Request Quote
  • 2-3 days
    ×
5.0 - 100.0mm Optic Dia., Self-Centering Jaw Clamp #16-078 New
×
£289.00
Qty 5+ £260.10 Request Quote
  • 2-3 days
    ×
25.0/25.4mm Optic Dia., E-Series Kinematic Mount #15-866 New
×
£29.90
Qty 10+ £28.40 Request Quote
  • 2-3 days
    ×

Need a Quote? Add a stock number to begin our two-step quote process.

Edmund Optics Facebook Edmund Optics Twitter Edmund Optics YouTube Edmund Optics LinkedIn Edmund Optics Instagram Edmund Optics Tick Tock

SELECTION OF OUR MEMBERSHIPS:

Spectaris Optence Photonics21 Epic EMVA EOS Photonics FranceCLP

×