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Comparison of IR Window/Lens Materials for Sensors

Explore various IR sensor materials: Polyethylene, Polypropylene, Sapphire, Calcium Fluoride, Germanium, Zinc Selenide. Compare costs, transmission rates, and usage notes for optimal sensor performance.

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Comparison of IR Window/Lens Materials for Sensors

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  1. IR Window/Lens Materials for IR Sensors2/7/11

  2. Polyethylene Cost: $Max Transmission (4-8um): 96%Min Transmission (4-8um): 35%Notes: High transmission with exception of 6-7um

  3. Polypropylene Cost: $ Max Transmission (4-8um): 92%Min Transmission (4-8um): 2% Notes: Transmittance is good below 5.5um

  4. Sapphire (Al2O3) Cost: $$ Max Transmission (4-8um): 85%Min Transmission (4-8um): 0%Notes: Durable Material, flat response until 6um

  5. Calcium Fluoride (CaF2) Cost: $$$ Max Transmission (4-8um): 93%Min Transmission (4-8um): 92% Notes: Very flat transmission response, water soluble material

  6. Germanium (Ge) Cost: $$$ Max Transmission (4-8um): 99%Min Transmission (4-8um): 96% Notes: Requires anti-reflection coating, not reliable above 100C

  7. Zinc Selenide (ZnSe) Cost: $$$ Max Transmission (4-8um): 97%Min Transmission (4-8um): 96% Notes: Requires anti-reflection coating, soft material, easily damaged

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