How do the 3D Glasses work? In order to simulate depth when
playing video games or watching a movie, each of your eyes must
see a slightly different image (see A and B below). The two
different Right Eye and Left Eye images are presented together
via the odd and even horizontal lines of your TV or PC monitor.
Without the glasses, you would see a blurry double view of both
images, one on top of the other (see Image C below). Photos A
and B below were taken simultaneously with a Stereoscopic
camera. The camera has two lenses, side by side, which simulate
human vision. Notice the shift in position of the images,
foreground to background. This is because of the difference in
perspective of each of the camera's left and right lenses. Image
C shows a close up of the two views merged together using the
odd and even horizintal lines of a computer monitor.