A visual display device is provided for delivering a generated image, preferably combinable with environment light, to the eye of a user. The device is lightweight and compact but yields a high quality image. In one embodiment, a color shutter provides a high-density color image. In one embodiment, a...http://www.google.de/patents/US5903395?utm_source=gb-gplus-sharePatent US5903395 - Personal visual display system
