eo_logo
 
Product added to cart
All Products / Optics / Windows and Diffusers / Visible Windows / BOROFLOAT® Borosilicate Windows
See all 69 Products in Family
TECHSPEC® components are designed, specified, or manufactured by Edmund Optics. TECHSPEC® components are designed, specified, or manufactured by Edmund Optics. Learn More

40mm Diameter x 3.3mm Thickness, MgF2 Coated, BOROFLOAT® Window

See More by SCHOTT Optical Components
TECHSPEC BOROFLOAT Borosilicate Windows

TECHSPEC BOROFLOAT Borosilicate Windows

×
Stock #29-406 New In Stock
×
Quantity Selector - Use the plus and minus buttons to adjust the quantity. +
C$58.10
Qty 1-5
C$58.10
Qty 6+
C$46.55
Volume Pricing
Request Quote
Get Product Downloads
Abbe Number (vd):
65.41
Bevel:
Protective as needed
Clear Aperture (%):
≥90
Clear Aperture CA (mm):
36.00
Diameter (mm):
40.00 ±0.50
Thickness (mm):
3.30 ±0.2
Coating:
MgF2 (400-700nm)
Coating Specification:
Rabs ≤2.5% @ 550nm
Coefficient of Thermal Expansion CTE (10-6/°C):
3.25 (+20 to +300°C)
Density (g/cm3):
2.23
Edges:
Ground and Seamed
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
BOROFLOAT®
Surface Flatness (P-V):
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 (%):
≥95
Type:
Protective Window
Wavelength Range (nm):
400 - 700
Young's Modulus (GPa):
64

Regulatory Compliance

RoHS 2015:
Compliant
×
Certificate of Conformance:
View
×
REACH 241:
Compliant
×

Product Family Description

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

TECHSPEC® BOROFLOAT® Borosilicate Windows are ideal for high temperature and harsh environment applications. The windows have a low coefficient of thermal expansion of 3.25 (+20 to +300°C). TECHSPEC® BOROFLOAT® Borosilicate Windows feature visible to near infrared transmission. 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.