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Bulbs that only emit long IR (>1200nm) or 1000K color temp.

  1. Jun 23, 2017 #1
    I am looking for bulbs that would be emitting a spectrum characterized by a color temperature of between 500K and 1000K or any kind of light fixture that only emits long IR wavelengths.

    Does such a thing exist?
     
  2. jcsd
  3. Jun 23, 2017 #2

    tech99

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    How about reducing the voltage on the bulb until it just glows, maybe using a dimmer? I have done this with 12 volt bulbs in school science when demonstrating the Greenhouse Effect.
     
  4. Jun 23, 2017 #3

    sophiecentaur

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    You can buy IR lamps for use with night vision and security equipment. LED s seem to be the way to go. Here's an example I found.
     
  5. Jun 26, 2017 #4

    Thanks!
    That makes sense, if there is less voltage, less power, so the color temperature should go down.
     
  6. Jun 26, 2017 #5

    sophiecentaur

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    There may be a lot of wasted power in using a filament lamp in that way. LEDs will give you much more IR at the wavelengths you need.
     
  7. Jun 26, 2017 #6
    Thanks for the info, I'll look up more stuff related to this!
     
  8. Jun 26, 2017 #7

    Yea I thought about that, but LEDs don't give me the radiant power I need. (unless I had >100,000 of them)
     
  9. Jun 26, 2017 #8

    sophiecentaur

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    You can get 14W IR LED lamps. What was your application for 1.4MW of IR? Also, where would you get appropriate filament lamps?
     
  10. Jun 26, 2017 #9

    russ_watters

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    I think for this you are talking in the range of an infrared heater. I remember once using an infrared heater to illuminate a room for a camcorder with an ir mode.
     
  11. Jun 26, 2017 #10

    dlgoff

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    Good idea. They also can provide lots of watts.
     
  12. Jun 29, 2017 #11

    sophiecentaur

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    What sort of spectrum do you require? If it's got to be Black Body then a hot black body (filament) will do nicely. If you want no visible light from your source then you may need to use a filter - which is what night vision sources tend to do. But you haven't said what your application is.
     
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