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Silicon Windows / Lenses

Material:
Silicon

Thickness:
+/-0.2mm

Surface Flatness:
N<1λ

Coating:
Uncoated,
AR/AR@3-5um, Ravg<2.0%

Diameter Tolerance:
+0.0,-0.1mm

Surface Quality:
80/50~40/20

Parallelism:
<2′

Silicon Windows offers high thermal conductivity and low density, making it suitable for laser windows. However, since silicon has a strong absorption band at 9 µm, it is not suitable for use with CO2 laser transmission applications.
wdt_ID Attributes Value
  • Dimension and shape can be customized, such as: Circular, Square, Triangle or others.
Within the range of 1.2-8um, Silicon is the most commonly used material for fabricating high infrared imaging system.
  • Thermal imager
  • Infrared temperature instrument
  • Long pass filter (for wavelengths greater than 2 µm)
  • Night sight
  • Laser mirror
  • Armament
  • Space satellite
  • High transmittance at 1.2-8 um
  • Light weight, low density, high hardness, suitable for weight sensitive applications / Knoop hardness: 1100 kg / mm2, density: 5.27 g / cm3
  • High refractive index (3.4 at 3-5um)

Related Resource for reference

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