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  • Slide 1
  • Infrared Technology
  • Slide 2
  • -W HAT IS AN I NFRARED C AMERA ? -I NFRARED S PECTRUM -L ONG AND M ID W AVELENGTH I NFRARED -T HERMAL A DVANTAGE - I NFRARED I MAGING A PPLICATIONS
  • Slide 3
  • W HAT IS AN I NFRARED C AMERA ? A camera that sees part of the electromagnetic spectrum that is invisible to humans -- it sees heat, NOT light. Best at detecting humans and vehicles. Thermal Imaging: 8-12 m Visible light:.4 m -.7 m Infrared: 0.7 m - 20 m Cosmic Rays Gamma Rays X-rays Ultraviolet (UV) Infrared (IR) Microwaves Radar RadioBroadcast Band Ultraviolet (UV) Visible Light Infrared (IR) Short Wavelengths Long Wavelengths 1 Nanometer1 Micron1 Millimeter1 Meter1 Kilometer
  • Slide 4
  • I NFRARED S PECTRUM LWIR Thermal Camera 8 12 um The earths atmosphere only transmits some wavelengths of light, other wavelengths are absorbed. Visible Camera Night Mode operates out to 1000nm (1 um) Visible Cameras Visible Light Spectrum 400 750 nm (0.4 to 0.75 um)
  • Slide 5
  • Any object at a temperature > absolute zero will emit radiation but the wavelength of the emitted radiation depends on the temperature.
  • Slide 6
  • L ONG AND M ID W AVELENGTH I NFRARED MWIR (Mid-Wave Infrared) cameras use the 3-5 m band Known as MWIR (Mid-Wave Infra-Red). Used to measure high temperatures (>250 o C). Much more sensitive, long range. Require coolers (maintenance). Are expensive. LWIR (Long-Wave Infrared) cameras use the 8-12 m band No cooler, almost no maintenance Used to measure temperatures from -10 o C to 250 o C Much less expensive Optimized for detecting people and vehicles.
  • Slide 7
  • K EY DIFFERENCE : T HERMAL VS. V ISIBLE Visible Cameras Require Illumination Thermal Cameras Require NO Illumination Reflected Light Radiated Heat
  • Slide 8
  • Infrared Imaging Works in Tough Environmental Conditions Advantages over standard cameras include: See in complete darkness See through obscurants (smoke, dust, haze, etc.) See through particulates (fog, rain, snow)
  • Slide 9
  • Thermal Advantage: Avoid Glare Thermal imagers see heat, not light This means they are not effected by bright lights like : standard cameras. They work equally well day and night Important: This is not just a night- time technology!
  • Slide 10
  • Slide 11
  • E XAMPLE : H EAT F LOW IN S ERVERS
  • Slide 12
  • Example: Liquid Levels in Tanks
  • Slide 13
  • Example: Airport Operations Visible Camera View Thermal Camera View
  • Slide 14
  • Thank you

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