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  1. lespierres's Avatar
    CrackBerry Newbie

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    3 Posts
    Thread AuthorThread Author   #1  

    Cool Polarised Sunglasses

    I love my Playbook but thought it was broken today. We were taking photographs out on our boat and couldn't figure out why the screen kept going black when turned from landscape to portrait. Oops- we both had polarised sun glasses on! LOL
    Herve5, SEAWARRIOR and johnierw like this.
  2. Jifffer's Avatar
    CrackBerry User

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    #2  

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    Glad to see that you are putting the PB to good use !!!
  3. thecellarseller's Avatar
    CrackBerry User

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    11 Posts
    #3  

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    I found the same scare! Anyone have the real explanation?
  4. SEAWARRIOR's Avatar
    CrackBerry Genius

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    1,596 Posts
    #4  

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    turn off screen dimming...
    Sent by"THE GUY YOUR MOTHER WARNED YOU ABOUT" from the fastest PlayBook in the known Berryverse (don't believe me??? ,,, look here ) --->>>[ http://forums.crackberry.com/blackbe...s-here-784133/ ]... jerzeybob.com
  5. #5  

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    There's some polarizing filter over the screen. Turn the glasses or screen and they go out of phase or into phase and blow the image.
    goodbery likes this.
  6. Carl Estes's Avatar
    CrackBerry Abuser

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    They hurt when you get stuck!
    #6  

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    Same thing happens when you are at the checkout stand and use the POS card swiper. You have to remove you sunglasses or tilt your head to see.....

    c
  7. PatrickMJS's Avatar
    CrackBerry Master

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    1,065 Posts
    #7  

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    Quote Originally Posted by thecellarseller View Post
    I found the same scare! Anyone have the real explanation?
    First of all, this is true of all lcd screens when viewed thru a polarized lens. Check out this youtube video...



    Plenty of people have reported problems viewing all types of lcd screens with polarized lenses, so the PB isn't "special" in this regard.

    On Amazon I found this believable explanation:

    "LCD panels work with compounds that polarize light in different angles based upon a voltage applied across the cell. The surface of the LCD is another polarizer. When the cell is in one state, the full back lighting comes through the cell and the surface polarizer. To make the cell "black", the compound goes to a state that twists the light to a 90 deg angle from the surface polarizer, which then blocks the output.

    "It would appear that the new LCDs are manufactured such that the surface polarizer is 90 degrees to the normal angle for polarized sun glasses. {I'd suspect that the LCD makers design for the most common usage -- which is probably PDA and cell-phones, so optimize viewability for the portrait orientation of a most cell-phones... people with the rotating phone/text modes may also be encountering sunglass problems.}"
    Patrick from Calgary
    ------------------------------
    Z10 v 10.0.10.85
    PB v 2.1.0.1526
    F2 likes this.
  8. #8  

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    Quote Originally Posted by PatrickMJS View Post
    First of all, this is true of all lcd screens when viewed thru a polarized lens. Check out this youtube video...
    Magic - now you see it, now you don't!

    Great video.

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