| 摘要 |
PROBLEM TO BE SOLVED: To make picture quality of a display excellent and to attain miniaturization and weight reduction in a head-up display by which video picture can be observed after attaching to a head in a goggle form or a headgear form. SOLUTION: In an apparatus which has a catoptric system for guiding an original picture displayed on an indicator 12 to eye-balls and which makes the original picture observable, the catoptric system has a reflecting surface R4 having different power according to an azimuth direction and a refraction surface R3 which adjoins the original picture without via another member and which has different power according to the azimuth direction. Both the reflecting surface R4 and the refraction surface R3 are made to have shapes having aspherical action in a plane crossing the original picture, the reflecting surface, the refraction surface and eye-balls. COPYRIGHT: (C)2004,JPO
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