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B How to increase brightness of projector

  1. Apr 2, 2016 #1
    I have made a smartphone projector. But is has low brightness.
    How to increase brightness of projector...
    Help plz
  2. jcsd
  3. Apr 2, 2016 #2

    Simon Bridge

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    Science Advisor
    Homework Helper

    The dimness is due to the amount of light the phone's screen produces being spread over a wider area.
    You need a phone with a brighter screen, a smaller projection area, or a different means of projection: i.e. point a camera at the phone and project the camera image.
    Last edited by a moderator: Apr 2, 2016
  4. Apr 2, 2016 #3
    Plz give a explanation...
  5. Apr 2, 2016 #4


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    Staff: Mentor

    How have you made your projector?
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