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Thread: Projecting a grid with a single laser

  1. #1

    Default Projecting a grid with a single laser

    Hello

    Is there a way to project a grid like this with a single laser (<5mW):
    Click image for larger version. 

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    I have a idea to make a focus light for my SLR Camera in dark conditions, and a laser grid would be perfect to focus on...

    Any ideas? (simple, no galvos or such)

  2. #2
    Join Date
    Nov 2007
    Location
    Cairns, Australia
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    1,896

    Default

    See if you can get your hands on some line gratings, you may be able to arrange them to get a grid.

  3. #3

    Default

    I got to say that i am not that good at the theory of gratings, but even if i managed to split the beam into multiple horizontal lines i would still need another laser to make the vertical, right?

    A single line is easy, just to buy a cheap line-laser, but i do not want a bunch of line lasers strapped to my camera (think 10 lasers on a camera...)

  4. #4
    Join Date
    Apr 2005
    Location
    SOUTHAMPTON U.K.
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    1,345

    Default

    You can buy cross grids ready made.

  5. #5

    Default

    Any sources for that, i have only found "star" type grids in my googling...?

  6. #6
    Join Date
    Mar 2009
    Location
    New Orleans, LA USA
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    399

    Default

    Something like... http://cgi.ebay.com/Cross-lens-AixiZ...item53dd6727dd wouls give you a beam like...

    Not exactaly what you were looking for but would still work.

    -Brooks

  7. #7

    Default

    Those i already have a few of, but the thing was to create a grid with multiple lines in both horizontal and vertical direction.

    I have seen a focus light like this on a digital camera from sony? i think and it was great to use in dark enviroments where the camera otherwise have a hard time focussing.

  8. #8
    Join Date
    May 2008
    Location
    Wisconsin
    Posts
    448

    Default

    These sometimes have grid generators, but the selection is random.

    Looks like this:



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