A prism camera, with two channels of image outputs, has a 5M pixel COMS and two light entrances each with a shutter as a reflection mirror. The shutters are crystal liquid, so they can be turned bright or dark by very small electric currents. While the shutters shifting between bright and dark, the CMOS senses the lights or not. When one shutter is bright, the other shutter is set as black. Thus at any moment, just only one entrance let lights arrive the CMOS. Of course, supplying power to the shutters and outputting image to the channels are strictly synchronized by just the same one controller. When the shifting frequency exceeds a certain value, you will see both channels have clear image outputs.
