UV LEDs

Discussion in 'General Electronics Chat' started by FingerPrint, Aug 15, 2008.

  1. FingerPrint

    Thread Starter Member

    Jul 24, 2008
    21
    1
    I'm looking into making a circuit of ultraviolet LEDs for detecting forged bank notes. Some sites say they are not suitable because of wave length and some say they are OK. What are your thoughts on this and is there any detriment to health and safety.

    Bob
     
  2. iamspook

    Member

    Aug 6, 2008
    27
    0
    Are you hoping to make something in the notes fluoresce? If so then the wavelength might be more critical. If you are also building a detector that can "see" what's reflected in UV, then surely it's not so critical.
     
  3. FingerPrint

    Thread Starter Member

    Jul 24, 2008
    21
    1
    Just checked on the bank of England web site. I need a wave length of 365 nanometres. There is a £20 mark in the left hand corner.
     
  4. yubyub

    Member

    Aug 13, 2008
    19
    6
    [​IMG]

    this is 415nm, which would be useless for notes.
     
  5. real_psyence

    New Member

    Aug 15, 2008
    1
    0
Loading...