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Thread: 445nm beam collimation/correction

  1. #51
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    (source: http://www.arctoslaser.de/en/arctos_arguments.htm )

    thats why those OPSL's looks so damn bright, small beam diameter.
    I didn't know why before. From the website, i think i will know the reason.

  2. #52
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    Which diode was used for these tests? That one piece of information would make the results a lot more useful today.

    (Yes, the thread is four years old, yes, the actors have changed, but if you're looking for research on collimation, you will find this thread.)

  3. #53
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    I would expect this was probably on the Ka$i0 A140 which was the first widely harvested diodes and what got everyone excited back in 2010 or so.

  4. #54
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    Thanks, Brad!
    ...15...

  5. #55
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    there's always the swami way:

    two diodes, two sets of prisms and combined with a pbs cube for a very small "+" in far field.

    Click image for larger version. 

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    suppose you're thinkin' about a plate o' shrimp. Suddenly someone'll say, like, plate, or shrimp, or plate o' shrimp out of the blue, no explanation. No point in lookin' for one, either. It's all part of a cosmic unconciousness.

  6. #56
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    That does look complicated! How does the brightness / spot look compared to your single-mode setup?

  7. #57
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    Quote Originally Posted by tribble View Post
    That does look complicated! How does the brightness / spot look compared to your single-mode setup?
    well.. it's 30x more powerful

    at ~40'

    Click image for larger version. 

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    suppose you're thinkin' about a plate o' shrimp. Suddenly someone'll say, like, plate, or shrimp, or plate o' shrimp out of the blue, no explanation. No point in lookin' for one, either. It's all part of a cosmic unconciousness.

  8. #58
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    wow, do you have a diagram of the beam travel by any chance?

  9. #59
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    Here you go, the end result at aperture is : +
    Attached Thumbnails Attached Thumbnails complicated-445.jpg  



    Interested in 6-12W RGB projectors with low divergence? Contact me by PM!

  10. #60
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    Yes. Exactly right.

    Quote Originally Posted by edison View Post
    Here you go, the end result at aperture is : +
    suppose you're thinkin' about a plate o' shrimp. Suddenly someone'll say, like, plate, or shrimp, or plate o' shrimp out of the blue, no explanation. No point in lookin' for one, either. It's all part of a cosmic unconciousness.

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