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Thread: dove prisms, can they do this?

  1. #11
    Join Date
    Jun 2009
    Location
    St. Louis, MO
    Posts
    607

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    What do you mean? Transmittance, cropping, or something else?
    Cropping
    "There are painters who transform the sun into a yellow spot, but there are others who, with the help of their art and their intelligence, transform a yellow spot into the sun." Pablo Picasso

  2. #12
    Join Date
    Sep 2006
    Location
    Netherlands
    Posts
    1,403

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    You can emulate the doveprism functionality with mirrors.
    Just tape some dollarshop cosmeticmirrors together with cardboard to make a proof of concept.

  3. #13
    Join Date
    Apr 2009
    Location
    North of Jackson Michigan USA
    Posts
    221

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    How would you do that? Diagram please.

    Thanks...Mike
    Runs with Lasers

  4. #14

    Default

    Yes, diagram please. Admittedly I'm an idiot but I think it's not just complicated to me. You need to not only emulate the results of internal reflections inside a prism but also beam redirection from refractions, and make it work when the prism rotates as well.

  5. #15
    Join Date
    Jun 2009
    Location
    St. Louis, MO
    Posts
    607

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    If you have an odd number of bounces you get rotation:

    ----------
    /.......\

    In the "diagram" above the light bounces off the left diagonal up to the horizontal and down to the right diagonal (The diagonals need to be on a shallower angle than my txt approximations of course) the axis of rotation is through the diagonals...
    "There are painters who transform the sun into a yellow spot, but there are others who, with the help of their art and their intelligence, transform a yellow spot into the sun." Pablo Picasso

  6. #16

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