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I Use of prisms vs use of mirrors in periscope

  1. Nov 1, 2016 #1
    Hi experts,

    I am aware using prisms enable total internal reflection while using mirrors there is only reflection of light. The difference is that in the former there is 100% light intensity after reflection while the latter does not.
    I have also read that using prisms is better than using mirrors as the reflective surfaces of the mirrors may degrade with time.
    My question is: What about the image quality (e.g. sharpness, brightness, colour accuracy)?

    Thank you in advance.
  2. jcsd
  3. Nov 1, 2016 #2

    Andy Resnick

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    2016 Award

    A good primer:

    Modern periscopes use fiber optics...
  4. Nov 2, 2016 #3
    Any reason why
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