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Thread: Brilliant grating effect

  1. #1
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    Default Brilliant grating effect

    It certainly looks like a grating effect anyway, but I can't figure out how exactly it's done. I would bloody well like to know though!

    Have a look at this (and the video response):
    http://uk.youtube.com/watch?v=pnXQBEqgeos

    It's apparently this baby:
    http://www.kam.co.uk/products/lighting/STARCLUSTER.htm

    I would love to know what gratings in what configuration you would have to use to get that effect though.

  2. #2
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    Default

    Hi Tocket
    It will be 2 pass thru gratings. One is fixed and one is rotating - I suspect they will be close - practically touching. You would get even better FX if you could rotate both and control thier speeds and directions.

    Rob
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  3. #3
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    Default

    one of my suppliers has started importing these. I`ll try and remember which one. From memory the units are reasonably cheap (low powered diodes)

  4. #4
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    Default

    Nice effect !

    and robs grating effects at UKLEM 2 was even better ! , amazing what you can do with a couple of motors !

    Was it just me or was the DJ in that video dreadful ? his mixing abilities seemed errr , worse than crap !

    PAUL
    In the beginning there was none. Then came the light - #1 UKLEM - 2007
    BUY UK LEGAL LASER POINTER :: NEW - Blue 460nm Laser Pointers

  5. #5
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    Default

    yeh, his DJ skills were seriously lacking

  6. #6
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    Sep 2009
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    Default

    I have the '3D' version of this KAM light, I have opened it up here...
    http://www.photonlexicon.com/forums/...005#post129005

    I suspect that both models have 4 stepper motors.

  7. #7
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    http://img62.imageshack.us/img62/3985/laser.gif

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  8. #8
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    Default

    appears to be two burst gratings in line one fixed one rotating
    Pat B on alt.lasers


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  9. #9
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    Quote Originally Posted by Laserman532 View Post
    appears to be two burst gratings in line one fixed one rotating
    That makes perfect sense now. Two line gratings make a matrix, a line grating and a burst grating makes a line of matrices and two burst gratings make a matrix of matrices. Only took about 2 years to get an answer to that question.

    Now to figure out the groove density...

  10. #10
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    Hey! Just this Wednesday I was at spencer's (a gift store) and they have an identical effect. The one on display had a constant speed though and it was with a 5mW green (or red) laser. Here's one

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