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    prasannapmc's Avatar
    prasannapmc Posts: 1, Reputation: 1
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    #1

    Sep 26, 2007, 09:55 AM
    Glass which allow to pass light only one way
    There is a type of colored glass(could be printed) which has small clear dot holes which allows light to pass through one direction. Generally people who are in side could see out side but people who live out side couldn't see inside the building. Same kind of glass shaders are used in for the side glasses of the cars as a sun shader. Does anybody know what is the technical name use to call that glass.
    Thanks.
    Stratmando's Avatar
    Stratmando Posts: 11,188, Reputation: 508
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    #2

    Sep 26, 2007, 10:25 AM
    Is this what you are talKing about? There is also glass that with voltage applied or removed, it will be opaque, or clear.


    http://www.patentstorm.us/patents/5609938-claims.html
    statictable's Avatar
    statictable Posts: 436, Reputation: 34
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    #3

    Oct 1, 2007, 12:50 PM
    This is simply a very thin plastic film which is perforated and can be made in all colors. The film can also be used to display a printed image as used in advertising. It's like standing at a screened door and looking out. You'll clearly see what's down the street but someone looking back at the door from down the street won't be able to see you.
    Stratmando's Avatar
    Stratmando Posts: 11,188, Reputation: 508
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    #4

    Oct 1, 2007, 02:18 PM
    Sounds like 2 people 1 glass, 1 film. For the second one: If someone walks up you can look in through the holes and look inside or no?
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