What are shutter glasses?

Some articles on shutter, shutter glasses, glasses:

Alternate-frame Sequencing
... An active shutter 3D system (a.k.a ... An active shutter 3D system generally uses "liquid crystal shutter glasses" (also called "LCS glasses", "LCS 3D glasses", "LC shutter glasses" or "active shutter glasses") ... The glasses are controlled by a timing signal that allows the glasses to alternately darken over one eye, and then the other, in synchronization with the refresh rate of the screen ...
Alternate-frame Sequencing - Hardware - Active Shutter 3D System Providers
... There are many sources of low-cost 3D glasses ... IO glasses are the most common glasses in this category ... XpanD 3D is a manufacturer of shutter glasses, with over 1000 cinemas currently using XpanD glasses ...
Active Shutter 3D System
... An active shutter 3D system (a.k.a ... An active shutter 3D system generally uses "liquid crystal shutter glasses" (also called "LCS glasses", "LCS 3D glasses", "LC shutter glasses" or "active shutter glasses") ... The glasses are controlled by a timing signal that allows the glasses to alternately darken over one eye, and then the other, in synchronization with the refresh rate of the screen ...

Famous quotes containing the words glasses and/or shutter:

    Midnight has come and the great Christ Church bell
    And many a lesser bell sound through the room;
    And it is All Souls’ Night.
    And two long glasses brimmed with muscatel
    Bubble upon the table. A ghost may come;
    For it is a ghost’s right....
    William Butler Yeats (1865–1939)

    And there is nothing in the eye,
    Shut shutter of the mineral man
    Who takes the fatherless dark to bed,
    The acid sky to the brain-pan;
    And calls the crows to peck his head.
    Allen Tate (1899–1979)