25.4mm Dia., 3mm Thick, Uncoated, ISP Optics Silicon (Si) Window | SI-W-25-3

See More by ISP Optics
×
Stock #24-627 3-4 days
×
- +
€135,00
Qty 1+
€135,00
Volume Pricing
Request Quote
Get Product Downloads
Bevel:
Protective as needed
Clear Aperture (%):
85
Clear Aperture CA (mm):
21.59
Diameter (mm):
25.40 +0.00/-0.13
Thickness (mm):
3.00 ±0.13
Coating:
Uncoated
Coefficient of Thermal Expansion CTE (10-6/°C):
2.55
Density (g/cm3):
2.33
Edges:
Fine Ground
Index of Refraction nd:
3.422 @ 5µm
Knoop Hardness (kg/mm2):
1150
Parallelism (arcmin):
<3
Poisson's Ratio:
0.265
Substrate: Many glass manufacturers offer the same material characteristics under different trade names. Learn More
Surface Flatness (P-V):
Surface Quality:
40-20
Type:
Protective Window
Wavelength Range (nm):
1200 - 7000
Young's Modulus (GPa):
140
Model Number:
SI-W-25-3

Regulatory Compliance

RoHS:
Certificate of Conformance:

Product Family Description

  • Transmission from 1.2 - 7μm
  • Available Uncoated or HDAR Coated for 3 - 5μm
  • Ideal for Weight Sensitive Applications

ISP Optics Silicon (Si) Windows provide transmission in the Near-Infrared (NIR) and Mid-Wave Infrared (MWIR) from 1.2 - 7μm. Silicon features a Knoop Hardness of 1150, making it harder and less brittle than Germanium. A High-Durability Anti-Reflection (HDAR) coating option increases the durability of the substrate while significantly improving transmission from 3 - 5μm, enabling use in harsh environments. ISP Optics Silicon (Si) Windows are ideal for weight-sensitive IR applications due to its low density of 2.329 g/cm3, which is half as dense as Germanium and Zinc Selenide. These windows are ideal for NIR imaging applications and are important for detection of sources radiating at a black body temperature of 700K.