The Nintendo 3DS games console does 3D without glasses
By T.S. | LONDON
BABBAGE had a chance to play with the new Nintendo 3DS games console yesterday, a hand-held device with a 3D display that does not require the user to wear glasses. Yes, really. The 3DS can perform this "autostereoscopic" miracle because it can be pretty sure where the screen is relative to your head: it will be about 30 centimetres in front of your face, and your nose will be aligned with the screen's centre. Using a filter called a parallax barrier, the display can then direct two slightly different images, in different directions, towards your left and right eyes to create the 3D effect. There's quite a lot of wiggle room: you have to move the device quite far away, or move quite far off the central axis, before the 3D effect is lost.
