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Visible~IR range Transparent windows

  • Transparent Yttria and Spinel
  • Optically transparent from Visible to IR frequencies, High mechanical strength
  • Available in various sizes and thicknesses
  • Fabricated through FINETECH`s ceramic processing technologies


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Properties Unit TA-S TA-Y
System Mg-Spinel Y2O3
Density g/cm3 3.58 5.01
VR transmittance (@4mm thickness)
(average value@0.38~0.78㎛)
% 83 -
IR transmittance(@4mm thickness)
(average value@0.78~3.4㎛)
% 83 84
MOR MPa 220 200
Thermal conductivity W/m·K 25 11.4
Thermal expansion coefficient ppm/℃ 7.5 8.3

※ Various size available on request