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Thread: IR Dum question

  1. #1
    Join Date
    Sep 2009
    Location
    Mexico
    Posts
    473

    Question IR Dum question

    Hi all

    I have one greeny without IR filter.
    If the ray pass two dicros.(pass green both)
    The IR go reflected?
    (sorry if is old question and DUM).

    Thanks and Cheers,
    Eduardo

  2. #2
    Join Date
    Sep 2006
    Location
    Netherlands
    Posts
    1,411

    Default

    That depends entirely on the dichros.
    The pass green/refelect blu and the pass green/reflect red may reflect IR too.
    ... or they may not, it just depends on their make.
    Just like your galvo mirrors, if coated for visible they might stop IR too.
    Dichros behave oddly outside their intended range.

    Nothings stops IR better than a dedicated IR band-stop filter, like fitted on all professional lasers.

  3. #3
    Join Date
    Sep 2009
    Location
    Mexico
    Posts
    473

    Default

    Thanks Bart

    Now I have to find those filters.
    You now for any PL member that carry those?(or something).

    Cheers,
    Eduardo


    Quote Originally Posted by -bart- View Post
    That depends entirely on the dichros.
    The pass green/refelect blu and the pass green/reflect red may reflect IR too.
    ... or they may not, it just depends on their make.
    Just like your galvo mirrors, if coated for visible they might stop IR too.
    Dichros behave oddly outside their intended range.

    Nothings stops IR better than a dedicated IR band-stop filter, like fitted on all professional lasers.

  4. #4
    Join Date
    Jul 2005
    Location
    Flying over a town near you
    Posts
    1,404

    Default

    Send me your mailing address in a PM to me and I will send you one.....only it will be sent United States Postal first class mail. El infrarrojo es harmfull a su damge de la vista y de la voluntad él. Déjeme enviarle un filtro mi amigo….
    You are the only one that can make your dreams come true....and the only one that can stop them...A.M. Dietrich

  5. #5
    Join Date
    Sep 2009
    Location
    Mexico
    Posts
    473

    Default

    PM sent
    Gracias Amigo.
    I'm in Mexico City

    Cheers,
    Eduardo

    Quote Originally Posted by MechEng3 View Post
    Send me your mailing address in a PM to me and I will send you one.....only it will be sent United States Postal first class mail. El infrarrojo es harmfull a su damge de la vista y de la voluntad él. Déjeme enviarle un filtro mi amigo….

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