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Thread: Projector protection

  1. #1
    Join Date
    Mar 2006
    Location
    East Coast , Canada
    Posts
    285

    Default Projector protection

    What, if any, is the best type of material to put over the laser output window of a projector...To keep the weather out , spiders ect...Some kind of glass? Dichroic type material?
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  2. #2
    Join Date
    Jun 2005
    Location
    SoCal
    Posts
    506

    Default

    I would recommend specifically AR Coated glass to minimize the reflections...
    I generally look for surplus glass flats... You can detect the AR coating because
    of a slightly purple hue to the reflections...

    A cheaper source of glass is called "archival glass" and it's used
    by museums to protect documents as such, it has a light coating
    by design as well.

    At times I've also used special round optics to correct problems like
    beam divergence (due to bounce mirrors)...

    You want to avoid "regular" glass because you'll suffer from a ghosting
    problem from the internal reflections... (it'll show up as blurry or doubled
    images)

  3. #3
    Join Date
    Mar 2006
    Location
    East Coast , Canada
    Posts
    285

    Default

    Will i lose much power going thruough this AR glass? Could i buy a piece of it from you? Im looking for a piece about 4" sq....
    CREATIVITY AT THE SPEED OF LIGHT!
    www.laser-ad.com

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