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The Virtual Boy employs an extremely creative way of producing its unique binocular (and 3D) graphics.
A one-pixel-tall row of LEDs at the far end of each display unit projects light through a lens in the middle of each unit.
After passing through the lens, light is reflected off a mirror situated at 45o that oscillates about its central axis.
The mirror oscillates and the LED refreshes with such speed that the human eye perceives a single image across the view plane.
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