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A New Chapter for MagicMirror: The Community Takes the Lead
Read the statement by Michael Teeuw here.

LED display shines through

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  • H Offline
    hannes23
    last edited by Oct 16, 2018, 6:18 PM

    Hi,

    I have a LG PHILIPS LP156WH2 (TL)(QB) LED Display behind this 2-way mirror from briga (btw realy good pricing and fast delivery!).
    Problem is, that the display shines through, even the Black areas are clearly visible even on low brightness and contrast. which in my opinion compleatly breaks the immersion. There is no more magic , it is just a screen behind a mirror.

    Does anyone have an idea how to avoid this and get only light areas to be seen?

    J 1 Reply Last reply Oct 16, 2018, 8:11 PM Reply Quote 0
    • J Offline
      justjim1220 Module Developer @hannes23
      last edited by Oct 16, 2018, 8:11 PM

      @hannes23

      Make sure the mirror is right up against the monitor screen, otherwise, you may be getting a reflection from the monitor on the back of the mirror causing shadows.

      "Life's Too Short To Dance With Ugly People"
      Jim Hallock - 1995

      1 Reply Last reply Reply Quote 0
      • H Offline
        hannes23
        last edited by Oct 16, 2018, 8:38 PM

        Thank you for your reply.

        The mirror is laying directly on the display (I am in a pre-assembly state). I think the led monitor can not display true black due to it’s backlight.

        I am thinking about something like a black foil between monitor and mirror, which makes the whole screen darker and then set the contrast to maximum?
        Maybe someone had similar problems and got a solution. Or a suggestion for a better 15’’ display?

        1 Reply Last reply Reply Quote 0
        • F Offline
          francislallen
          last edited by May 3, 2019, 2:07 PM

          Ensure the mirror is straight facing the screen, else, you might get a reflection from the screen on the back of the mirror causing shadows. Check more.

          1 Reply Last reply Reply Quote 0
          • M Offline
            maiky09
            last edited by May 21, 2019, 1:04 AM

            Did someone find any soltion. PLEASE HELP US…

            1 Reply Last reply Reply Quote 0
            • B Offline
              bhepler Module Developer
              last edited by May 21, 2019, 3:45 AM

              Unfortunately, I think your only options are to either 1) replace the glass with a type that doesn’t transmit as much light through it (lower % rating) or 2) replace the monitor with a better quality one.

              M 1 Reply Last reply May 21, 2019, 11:45 AM Reply Quote 0
              • M Offline
                maiky09 @bhepler
                last edited by May 21, 2019, 11:45 AM

                @bhepler Thanks for the reply. That’s right, I’ll have to change the monitor. Can you give me some specifications to keep in mind when buying the monitor?

                ? 1 Reply Last reply May 21, 2019, 12:28 PM Reply Quote 0
                • ? Offline
                  A Former User @maiky09
                  last edited by A Former User May 21, 2019, 12:31 PM May 21, 2019, 12:28 PM

                  @maiky09
                  LP156WH2 insists 200nits as brightness, but usual LED panels also have 200~250nits. You need to choice higher contrast than LP156WH2(1:400).
                  Of course, There could be nicer panels - By example, Apple - 500nits, 1:1350 Lenovo X1 Extreme(1G) UHD - 500 nits, 1:1414. You can compare those values as reference which panel you will buy.
                  WARNING RPI can only handle up to FHD(1920*1080). So above panels mentioned are useless for RPI
                  Anyway the absolute answer will be OLED panel, it could give a real Black. Unfortunately that is still too expensive for MM.

                  M 2 Replies Last reply May 21, 2019, 12:35 PM Reply Quote 0
                  • M Offline
                    maiky09 @Guest
                    last edited by May 21, 2019, 12:35 PM

                    @Sean Thank you very much for your reply. Wou this makes me more difficult and more expensive.

                    S 1 Reply Last reply May 21, 2019, 1:12 PM Reply Quote 0
                    • S Offline
                      Serge
                      last edited by Serge May 21, 2019, 1:12 PM May 21, 2019, 1:10 PM

                      This post is deleted!
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