Playing a first-person shooter by using a lasergun and rotating video projection: it's possible by means of a compact videoprojector baesd on RGB-lasers and a microscopic mirror. These technologies were already used in mobile phones; Microvision shows what you can do if you place such a projector on a lasergun.
The projector contains lasers for respectively red, green and blue light. To create each pixel, the light emission of these lasers is combined in the right intensity to create the colours. The light beam is then picked up by a so-called MEMS scanning mirror, a very small mirror that rotates accurately by means of electromechanics. The light is then emitted in a direction of choice, after which an image of 848x480 pixels is projected.
The video below shows a demonstration of the lasergun with projector: the image moves across the wall when the player turns. The lasergun registers the player's movements, after which they can be processed by the game. The gun shown in the video is a prototype: it's still unclear whether the product will truly be released and at which price. Additional information on the used PicoP projector can be found on Microvision.
The lasergun with projector on an Engadget image