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Thread: Over 90 degrees scan?

  1. #11
    Join Date
    Feb 2005
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    Switzerland
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    My (future ex-) Widemove scanners have standard mirrors (5x10mm) and can scan at 90° with my 3.5mm laser beams. The trick is that you can move each scanner individually (verticaly and horizontaly) so first you can adjust the X mirror height perfectly to the incoming beam to have no loss, and secondly place the Y mirror very close to the X mirror so they don't need a mega-long Y-axis mirror...

  2. #12
    Join Date
    May 2008
    Location
    Wisconsin
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    449

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    Ah, I understand. Thanks everyone.

  3. #13
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    Apr 2008
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    Amsterdam, NL
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    Quote Originally Posted by White-Light View Post
    So I'm guessing then that if you scan to 90 degrees, the outer edges of the cue will look dimmer due to beam clipping?
    Please look at this picture where DT40W are scanned at the widest angle:


  4. #14
    Join Date
    Dec 2008
    Location
    Southport, UK
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    2,746

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    Quote Originally Posted by mccarrot View Post
    Please look at this picture where DT40W are scanned at the widest angle:
    A good illustration showing the loss of aperture on the X mirror losing some of the thicker red beam at the galvo's outer limit.
    http://img62.imageshack.us/img62/3985/laser.gif

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  5. #15
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    Apr 2008
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    Amsterdam, NL
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    Quote Originally Posted by Doc View Post
    A good illustration showing the loss of aperture on the X mirror losing some of the thicker red beam at the galvo's outer limit.
    Exactly!, and a longer Y mirror will not help you.

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