A head up display apparatus adapted to be mounted on a user's head in a goggle type or head gear type arrangement and enable a video image to be observed, wherein an original image is directed to an eyeball through a reflecting optical system to enable the image to be observed, and one or more members...http://www.google.de/patents/US6532116?utm_source=gb-gplus-sharePatent US6532116 - Compact optical apparatus for head up display
