PROJECT 8Laser Night Vision
INFRARED LIGHT-EMITTING DIODES (LEDs) are the most widely used source of infrared radiation for night vision illuminators because they are inexpensive, easy to connect, and possess no safety hazards, because they are human eye safe and do not radiate much heat. The drawback to LED-based night vision illumination systems is that they are not really useable at distances of more than 100 feet (ft) no matter how many LEDs you use in the array. Filter-based night vision illuminators that change visible light into infrared light are suitable for much greater distances, but they suffer from huge energy losses due to massive heating of the filter material and because of this, they require massive amounts of current and are ...
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