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Thread: Need a laser to project an image on a steel table

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    Diamond Member Justloadit's Avatar
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    Need a laser to project an image on a steel table

    Hi All,

    I have an inquiry in which a laser would do the job, can any one point me in the right direction please.

    I need to project an image on a metal table, it may be square or rectangle with areas of square, rectangle or circular parts with in the frame, of an approximate size of 3 meters. An operator will then line up pre-cut pieces and assemble the shape on a table, and then fabricate the parts into a full product.

    Can anyone recommend a laser display unit capable of doing this. We will be creating many shapes and would like to control the display image, depending on which part is going to be fabricated.
    Victor - Knowledge is a blessing or a curse, your current circumstances make you decide!
    Solar and LED lighting solutions - www.microsolve.co.za

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    Diamond Member adrianh's Avatar
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    I'll be very surprised if one would be allowed to use a laser for this purpose. The problem of course is that laser light reflects off steel and has a chance of striking the operators eyes. Wouldn't it be possible to simply place a computer presentation projector overhead and point it down at the table. Add a bit of sideways thinking and WII motes fitted to his gloves and you have an interactive table....
    How easily someone is offended is directly proportional to how stupid they are.
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    Diamond Member Justloadit's Avatar
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    Quote Originally Posted by adrianh View Post
    I'll be very surprised if one would be allowed to use a laser for this purpose. The problem of course is that laser light reflects off steel and has a chance of striking the operators eyes. Wouldn't it be possible to simply place a computer presentation projector overhead and point it down at the table. Add a bit of sideways thinking and WII motes fitted to his gloves and you have an interactive table....
    mmmm interesting, never thought about the possibility of reflection...... need to discuss that with the client.

    A projector can work, all that may be required is a set up the first time to ensure that the generated image is projected dimensionally correct.
    Victor - Knowledge is a blessing or a curse, your current circumstances make you decide!
    Solar and LED lighting solutions - www.microsolve.co.za

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    Diamond Member adrianh's Avatar
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    I really don't think that laser is feasible. I get the odd reflection from my laser cutter reflected off the edge of the honeycomb and I can tell you it isn't pleasant. I really think that a projector with a powerful lamp will do the trick. You will have to do some research into the focal length of the projectors...you may have to devise a 'contact lens' to adapt the machine.
    How easily someone is offended is directly proportional to how stupid they are.
    ~GS Elevator

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    Diamond Member Justloadit's Avatar
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    Hi Agrian,

    Just remember that your laser is used for cutting, the one for visual displays is only a couple of milliwatts, a far cry from your cutting laser.
    Victor - Knowledge is a blessing or a curse, your current circumstances make you decide!
    Solar and LED lighting solutions - www.microsolve.co.za

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    Diamond Member adrianh's Avatar
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    Maybe, but even low power laser reflection still poses a danger. I bet you won't want to look into a laser pointer for any length of time.
    How easily someone is offended is directly proportional to how stupid they are.
    ~GS Elevator

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    Diamond Member AndyD's Avatar
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    Lol, unless you're an airline pilot.

    We used to plot large layouts using one of these.
    Click image for larger version. 

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    I still have one I bought during my apprenticeship but I haven't seen one actually being used for many years.
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    I am special and so is Vanash.
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