infrared light up screen

Discussion in 'General Electronics Chat' started by ersandeep2, Feb 19, 2014.

  1. ersandeep2

    Thread Starter New Member

    Feb 19, 2014
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    0
    Dear all
    i am using infrared led with 1550nm i want to make a pin point focus of this led light so i want to view this point on a paper material please anyone can help to find such type material. as i know there is a phosphor screen which shows the x-ray radiation on it thus we can center the x-ray gen tube in same way i want to get a screen for infrared light.

    please help me...!!!!!!
     
  2. Sensacell

    Well-Known Member

    Jun 19, 2012
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    Use a video camera that can see the IR light.
     
  3. R!f@@

    AAC Fanatic!

    Apr 2, 2009
    8,754
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    You can also use ur phone camera to view IR transmission.

    I dunno of any phosphor screens though.
     
  4. takao21203

    Distinguished Member

    Apr 28, 2012
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    463
    Digital cameras will see IR as pink
     
  5. tracecom

    AAC Fanatic!

    Apr 16, 2010
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    1,393
    Assuming your IR LEDs produce heat, you may find some help by googling thermochromism and heat sensitive color change. There are all sorts of materials that change color based on their surface temperature.
     
  6. alfacliff

    Well-Known Member

    Dec 13, 2013
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    back in the 70's when I workede at NCR there were cards that glowed when exposed to infrared we used in one of our tests. Sorry , its too long ago to remember the brand on the cards.
     
  7. JohnInTX

    Moderator

    Jun 26, 2012
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    They were GE Telltale cards, a phosphor screen laminated on a folding card that glowed red when hit by an IR LED. You charged it by holding it under a florescent light before use. I still have mine somewhere but use the phone camera now.
     
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