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  2. Infrared lamp - Wikipedia

    en.wikipedia.org/wiki/Infrared_lamp

    Round bulbs, often tinted red to reduce visible light, provide infrared radiant heat suitable for warming of people or animals, but the power density available is low. The development of quartz halogen linear lamps allowed much higher power density up to 200 watts/inch of lamp (8 w/mm), useful for industrial heating, drying and processing ...

  3. Camera trap - Wikipedia

    en.wikipedia.org/wiki/Camera_trap

    The major alternative light source is infrared, which is usually not detectable by mammals or birds. [2] Camera traps are also helpful in quantifying the number of different species in an area; this is a more effective method than attempting to count by hand every individual organism in a field.

  4. Day and night camera - Wikipedia

    en.wikipedia.org/wiki/Day_and_night_camera

    A day and night camera is a security camera that can see the picture during the day hours, when there is enough sunlight, and during the night in total darkness or minimum illumination. A day and night camera has special lenses that allow infrared emission produced by infrared LEDs and reflected from objects to go through and reach a CCD or ...

  5. Night-vision device - Wikipedia

    en.wikipedia.org/wiki/Night-vision_device

    The device enhances ambient visible light and converts near-infrared light into visible light which can then be seen by humans; this is known as I 2 (image intensification). By comparison, viewing of infrared thermal radiation is referred to as thermal imaging and operates in a different section of the infrared spectrum.

  6. Optical wireless communications - Wikipedia

    en.wikipedia.org/wiki/Optical_Wireless...

    In January 2015, IEEE 802.15 formed a Task Group to write a revision to IEEE 802.15.7-2011 that accommodates infrared and near ultraviolet wavelengths, in addition to visible light, and adds options such as Optical Camera Communications and LiFi. [12]

  7. Multi-spectral camouflage - Wikipedia

    en.wikipedia.org/wiki/Multi-spectral_camouflage

    The caterpillar of the eyed hawk-moth Smerinthus ocellatus is camouflaged to match a leafy background in both visible and infra-red light.. The English zoologist Hugh Cott, in his 1940 book Adaptive Coloration in Animals, wrote that some caterpillars such as the eyed hawk-moth Smerinthus ocellatus, and tree frogs such as the red-snouted treefrog Hyla coerulea, are coloured so as to blend with ...