eo_logo
  • Country/Region
  • cart   
 
See all 44 Products in Family
TECHSPEC® components are designed, specified, or manufactured by Edmund Optics. Learn More

20mm Diameter x 3.3mm Thickness, NIR Coated, BOROFLOAT® Window

TECHSPEC BOROFLOAT Borosilicate Windows

TECHSPEC BOROFLOAT Borosilicate Windows

TECHSPEC BOROFLOAT Borosilicate Windows TECHSPEC BOROFLOAT Borosilicate Windows
×
TECHSPEC BOROFLOAT Borosilicate Windows
TECHSPEC BOROFLOAT Borosilicate Windows
Stock #12-189
Qty 1-5
C$51.98
Qty 6+
C$40.50
Volume Pricing
Request Quote
Abbe Number (vd):
65.41
Bevel:
Protective as needed
Clear Aperture (%):
≥90
Clear Aperture CA (mm):
18.00
Diameter (mm):
20.00 ±0.5
Thickness (mm):
3.30 ±0.2
Coating:
NIR (700-1150nm)
Coating Specification:
Ravg <1.0% @ 700 - 1150nm
Coefficient of Thermal Expansion CTE (10-6/°C):
3.25 (+20 to +300°C)
Density (g/cm3):
2.23
Edges:
Ground
Index of Refraction nd:
1.472
Knoop Hardness (kg/mm2):
480
Operating Temperature (°C):
1 hour @ 500; >100 hours @ 450
Poisson's Ratio:
0.2
Resistance to Temperature Difference (K):
Short Term, 1 hr: 110K
1 - 100 hrs: 90K
Long Term, >100 hrs: 80K
Substrate: Many glass manufacturers offer the same material characteristics under different trade names. Learn More
Surface Flatness:
4 - 6λ
Surface Quality:
80-50
Thermal Shock (K):
Up to 4mm Thick: 175K
4 - 6mm Thick: 160K
6 - 15mm Thick: 150K
Transformation Temperature (°C):
525
Transmission (%):
≥97
Type:
Protective Window
Wavelength Range (nm):
700 - 1150
Young's Modulus (GPa):
64

Regulatory Compliance

RoHS 2015:
Reach 219:

Product Family Description

  • Low Coefficient of Thermal Expansion
  • Visible to Near Infrared Transmission
  • High Resistance to Thermal Shock

BOROFLOAT® Borosilicate Windows are ideal for high temperature and harsh environment applications. Unlike common borosilicate that is drawn flat, BOROFLOAT® is produced by a float technique that yields superior surface flatness — typically 4 - 6λ per inch. BOROFLOAT® is about three times more resistant to thermal shock than standard soda lime glass.

Can’t find what you need? Get a quick custom quote.

Title  Type Compare Stock Number  Price Buy
10.0 - 60.0mm Optic Height, Metric Bar-Type Optic Holder Fixed #55-530 C$129.60
Qty 10+ C$116.64 Request Quote
  • In Stock
    ×
19.5 - 108.0mm Optic Dia., Three-Screw Adjustable Ring Mount Fixed #03-670 C$126.90
Qty 10+ C$112.05 Request Quote
  • In Stock
    ×
20.0mm Optic Dia., Optic Mount Fixed #64-559 C$39.15
Qty 10+ C$35.24 Request Quote
  • Contact Us
    ×
2.0 - 35.0mm Optic Dia., Three-Screw Adjustable Ring Mount Fixed #03-668 C$74.25
Qty 10+ C$65.88 Request Quote
  • In Stock
    ×
4.0 - 36.0mm Optic Dia., Self-Centering Jaw Clamp Fixed #16-077 C$179.55
Qty 5+ C$157.95 Request Quote
  • In Stock
    ×
5.0 - 100.0mm Optic Dia., Self-Centering Jaw Clamp Fixed #16-078 C$468.45
Qty 5+ C$413.10 Request Quote
  • In Stock
    ×
5.0 - 25.0mm Optic Height, Metric Bar-Type Optic Holder Fixed #55-529 C$120.15
Qty 10+ C$108.14 Request Quote
  • In Stock
    ×
7.0 - 40.0 Optic Height, English Bar-Type Optic Holder Fixed #03-676 C$120.15
Qty 10+ C$108.14 Request Quote
  • In Stock
    ×
7.0 - 67.0 Optic Height, English Bar-Type Optic Holder Fixed #03-669 C$129.60
Qty 10+ C$116.64 Request Quote
  • In Stock
    ×
2"/50.8mm Diameter, Bar Type Lens / Filter Holder, Quick Start Optical Mounts Fixed #17-530 C$179.55 Request Quote
  • Contact Us
    ×
8.0 - 118.0 Optic Height, English Bar-Type Optic Holder Fixed #03-666 C$133.65
Qty 10+ C$120.28 Request Quote
  • In Stock
    ×
9.5 - 73.0mm Optic Dia., Three-Screw Adjustable Ring Mount Fixed #36-605 C$92.48
Qty 10+ C$81.68 Request Quote
  • In Stock
    ×
×