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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

B270 Windows

See More by SCHOTT Optical Components
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  • 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. 

Common Specifications

Bevel:
Protective as needed
Edges:
Fine Ground
Knoop Hardness (kg/mm2):
500
Poisson's Ratio:
0.22
Young's Modulus (GPa):
71.5
Abbe Number (vd):
58.3
Index of Refraction (nd):
1.523
Substrate:
Surface Quality:
60-40
Coefficient of Thermal Expansion CTE (10-6/°C):
9.4 (+20 to +300°C)
Density (g/cm3):
2.56

Products

Dia. (mm)  Dimensions (mm)   Thickness (mm)   Coating   Compare   Stock Number   Price  Buy
5.00 - 1.00 Uncoated
5.00 - 1.00 MgF2 (632.8nm)
5.00 - 1.00 VIS-NIR (400-1000nm)
- 5.00 x 5.00 1.00 Uncoated
- 5.00 x 5.00 1.00 MgF2 (632.8nm)
10.00 - 1.00 Uncoated
10.00 - 1.00 MgF2 (632.8nm)
10.00 - 1.00 VIS-NIR (400-1000nm)
- 10.00 x 10.00 1.00 Uncoated
- 10.00 x 10.00 1.00 MgF2 (632.8nm)
12.50 - 1.00 Uncoated
12.50 - 2.00 Uncoated
12.50 - 1.00 MgF2 (632.8nm)
12.50 - 2.00 MgF2 (632.8nm)
12.50 - 2.00 VIS-NIR (400-1000nm)
- 12.50 x 12.50 2.00 Uncoated
- 12.50 x 12.50 2.00 MgF2 (632.8nm)
15.00 - 2.00 Uncoated
15.00 - 2.00 MgF2 (632.8nm)
15.00 - 2.00 VIS-NIR (400-1000nm)
- 15.00 x 15.00 2.00 Uncoated
- 15.00 x 15.00 2.00 MgF2 (632.8nm)
20.00 - 1.00 Uncoated
20.00 - 2.00 Uncoated
20.00 - 1.00 MgF2 (632.8nm)
20.00 - 2.00 MgF2 (632.8nm)
20.00 - 2.00 VIS-NIR (400-1000nm)
- 20.00 x 20.00 2.00 Uncoated
- 20.00 x 20.00 2.00 MgF2 (632.8nm)
25.00 - 1.00 Uncoated
25.00 - 2.00 Uncoated
25.00 - 1.00 MgF2 (632.8nm)
25.00 - 2.00 MgF2 (632.8nm)
25.00 - 2.00 VIS-NIR (400-1000nm)
- 25.00 x 25.00 2.00 Uncoated
- 25.00 x 25.00 2.00 MgF2 (632.8nm)
30.00 - 2.00 Uncoated
30.00 - 1.00 Uncoated
30.00 - 1.00 MgF2 (632.8nm)
30.00 - 2.00 MgF2 (632.8nm)
30.00 - 2.00 VIS-NIR (400-1000nm)
35.00 - 2.00 Uncoated
35.00 - 2.00 MgF2 (632.8nm)
35.00 - 2.00 VIS-NIR (400-1000nm)
40.00 - 1.00 Uncoated
40.00 - 3.00 Uncoated
40.00 - 1.00 MgF2 (632.8nm)
40.00 - 3.00 MgF2 (632.8nm)
40.00 - 3.00 VIS-NIR (400-1000nm)
50.00 - 1.00 Uncoated
50.00 - 3.00 Uncoated
50.00 - 1.00 MgF2 (632.8nm)
50.00 - 3.00 MgF2 (632.8nm)
50.00 - 3.00 VIS-NIR (400-1000nm)
- 50.00 x 50.00 3.00 Uncoated
- 50.00 x 50.00 3.00 MgF2 (632.8nm)
75.00 - 3.00 Uncoated
75.00 - 3.00 MgF2 (632.8nm)
- 75.00 x 75.00 3.00 MgF2 (632.8nm)
- 75.00 x 75.00 3.00 Uncoated
100.00 - 3.00 Uncoated
100.00 - 3.00 MgF2 (632.8nm)
125.00 - 4.00 Uncoated
125.00 - 4.00 MgF2 (632.8nm)
150.00 - 4.00 Uncoated
150.00 - 4.00 MgF2 (632.8nm)
200.00 - 4.00 Uncoated
200.00 - 4.00 MgF2 (632.8nm)

Technical Information

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