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Case Study:
Cadillac Night-Vision HUD
In 1999, Cadillac began installing an infrared night vision display into the DeVille line of automobiles. Raytheon provided the infrared camera and imaging computers, which Cadillac installed into the luxury cars.

Developed for Texas Instruments and later acquired by Raytheon Systems for military use, the thermal-imaging device captures infrared radiation on a 1 inch square, 320x240-pixel barium-strontium-titanate ferroelectric sensor behind the car’s grill. The camera is sensitive to infrared radiation in the 3-5µm and 8-14µm wavelengths, effectively weeding out the range for water absorption so that the device is blind to rain and fog.

Designed by Delphi-Delco of Dayton, Ohio, the adjustable display (HUD) is achieved by means of an LCD mounted in the dashboard, which projects an image onto a small area on the lower portion of the driver's side windscreen. This small portion is coated with an aspheric mirror which reflects the image projected by the LCD display.

A problem was discovered, however, in installation. Against the glare produced by the headlamps, the display projection was far too dim. In addition, at around -10° Celsius, the mercury vapors in CCFL's begin to coagulate into droplets, causing the lamp to dim exponentially as temperature decreases.">
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Ask an Engineer

Whether you have difficulty with phosphor matching or Cd/m2 readings on your LCD backlight, the JKL photometry lab can provide you with technical assistance. If your design requires a lamp with a custom heater or encapsulated inverter or your product design requires engineering assistance, feel free to contact JKL for support.

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