ACTIVE STEREO
LCD Shutter glasses
Shutterglasses have 2 LCDs, one directly in front of each eye. Each LCD can block one eye’s view onto the screen. When an image for the left eye is drawn on the monitor, the LCD of the right eye will block the right eye’s view and the other way round. If this is repeated fast enough (faster than can be perceived), and if the synchronization can be kept, then this will make you think you’re seeing true 3D.
Benefits: ultra clear 3D imaging and eliminate «ghosting» which is a problem with other 3D display technologies such as Anaglyph, stereoscopic image can be projected on any surface.
Disadvantages: special demands to 3D equipment, occupy a lot of place, stereoscopic technology reduces an image resolution. Flicker can be noticeable except at very high refresh rates, as each eye is effectively receiving only half of the monitor’s actual refresh rate. Because the LCD shutter glasses are shutting out light half of the time, and are slightly dark even when letting light through, less light reaches the viewers eyes from the display. This gives an effect similar to watching TV with sunglasses on, i.e. a much darker picture.
Price: high (about 100 Euro)
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