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Thread: changing the focus plane of a video projection?

  1. #1
    Join Date
    Mar 2018
    Posts
    96

    Default changing the focus plane of a video projection?

    A bit of unsual scenario, I need to divide a video projection beam horizontally into two. Since the splitted beams in my diagram are treated as a separate beam they have to have their focus plane changed. Is that possible to do and how would one do it?

    http://image.ibb.co/jAu9x7/9241421.jpg

    If this helps the resolution of the original beam is pretty low by todays standards, 856x480 pixels.

  2. #2
    Join Date
    Jun 2009
    Location
    St. Louis, MO
    Posts
    682

    Default

    I'd infinity collimate the output of the projector then split the beams focus the beams and use the real images to feed projection lenses. That way you can control the focus and the gain of each image independently.
    "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

  3. #3
    Join Date
    Mar 2018
    Posts
    96

    Default

    I can't really use separate complete projection lenses for each beam.

    The projection beams at aperture are 30mm diagonal and throw ratio is 1.2 if this helps.

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