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Information on photoluminescence?

  1. Oct 7, 2004 #1
    Can anyone tell me any good websites which have information on photoluminescence?

    Also, i have an lcd projector with a light source which has about 500 lumens as the light intensity.If i need to project an image of an chess board on the lcd onto the screen with the best contrast say for a 32 gray levels(5 bit) what shld be the distance to screen
  2. jcsd
  3. Oct 7, 2004 #2


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    Room illumination is the main factor you need to determine.
    Also what do you consider to be an acceptable contrast ratio.
  4. Oct 8, 2004 #3
    i am considering a contrast ratio of abt 20:1.i need some good material on this topic as i am very new to these.
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