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Thread: Which pattern to use when testing Laser Power?

  1. #1
    Join Date
    Sep 2007
    Location
    Essex, England
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    800

    Default Which pattern to use when testing Laser Power?

    Hello. I recently tested my lasers with a power meter and got depressing results untill I drew a very complicated graphic which I guess forced the lasers to work harder.

    What graphic should I use to test a lasers power?
    Does FB3 have a built in CW setting?

    Thanks.
    Graham

  2. #2
    Join Date
    Apr 2008
    Location
    Poland
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    322

    Default

    Ha! To measure laser power You can use any image that will fit Your detector, but to measure full power of the laser You should make it run full power, i.e. apply +5V to intensity input (ILDA). This may hard to achieve with LaserFX software, 'cos they frequently add some blanking points You are not aware of, yet lowering the laser power for a brief moment of time. Also, for accurate measurement the laser beam should be stationary at the laser power detector, not wiggling.
    At last, measuring power after the scanners is rather measuring projector output power - You're including several unavoidable loss sources on the laser beam path.

    Piotr.K

  3. #3
    Join Date
    Dec 2006
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    Netherlands
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    983

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    here's an ild file that should project a stationary beam at full power RGB without blanking points.
    Attached Files Attached Files

  4. #4
    Join Date
    Sep 2007
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    Essex, England
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    Default

    Cool, Thanks


  5. #5
    Join Date
    Dec 2006
    Location
    Netherlands
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    Default

    btw different playback programs work different, possibly adding blanked points to the frame.

  6. #6
    Join Date
    May 2008
    Location
    Wisconsin
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    449

    Default

    Thanks, Zoof!

    80,000 characters to describe one stationary beam? Gotta love .ild

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