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Thread: Homemade Laser Projector

  1. #1

    Default Homemade Laser Projector

    sltvm2007 have started to explain all the details of his DIY laser projector on another forum: Laserpointerfoums

    http://laserpointerforums.com/f47/ho...-tv-32628.html
    Last edited by mechath; 10-24-2010 at 04:52.

  2. #2
    mixedgas's Avatar
    mixedgas is online now Creaky Old Award Winning Bastard Technologist
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    Actually SLTVM2007 has not explained a damn thing. We knew it was a resonant scanner from day one. He may have given details of a resonant structure, but parts of that do not add up. He does not explain how to correct the phasing and drift of the resonant scanner. Commercial systems that do this have complex feedback networks, etc.

    The fast green direct DPSS modulation, albeit at very low powers, has yet to be explained.

    Oh, wait, you are sltvm2007... Trolling for your ego?

    Steve

  3. #3
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    isnt stainless steel non-magnetic? how is he using an electromagnet to vibrate the stainless steel?

  4. #4
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    (me not making any statements about the mystery projector)

    If a material is not attracted by a permanent magnet, does not mean it has no magnetical properties.

    Classical example: take a coin that is not attracted by a magnet, lay it on a wooden table.
    Now quickly move a strong permanent magnet parallel to the table over the coin.

    It moves ! Even though it wasn't attracted in the first place.

  5. #5

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    Quote Originally Posted by mixedgas View Post
    He does not explain how to correct the phasing and drift of the resonant scanner. Commercial systems that do this have complex feedback networks, etc.Steve
    Restoring torque of Kuntman's scanner is very strong, hence it has a very sharp
    resonant (no phase drift problem); therefore no need for any position detectors and complex feedback controls.

    This scanner has these main features:
    - No MEMS
    - No acousto-optical-modulators
    - No need for complex feedback controls.

    http://laserpointerforums.com/f47/ho...-tv-32628.html

  6. #6

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    Reply to flecom and -bart-

    Yes you are right. Stainless steel is usually non-magnetic. Mirror material should be magnetic. By the word 'stainless' we have intended to mean 'good reflectivity'.

    Thanks.

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    Hmmm, we've been here before haven't we... You even earned an "FU" smiley didn't you?
    Love, peace, and grease,

    allthat... aka: aaron@pangolin

  8. #8

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    Quote Originally Posted by mixedgas View Post
    The fast green direct DPSS modulation, albeit at very low powers, has yet to be explained.
    Steve
    Here is a diagam for high speed analog DPSS green laser. And there is a picture of an image scanned by using this.
    Attached Images Attached Images

  9. #9

    Default

    Hi.. For all details of Kuntman's scanner-projector and its applications: scanning camera and lidar:

    http://laserpointerforums.com/f47/ho...-tv-32628.html

  10. #10
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    Mechath you dont have to double post
    There is a nice edit button whenever you post.
    Custom laser graphics, custom beamshows and more!
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