| 摘要 |
<p>First and second reflecting faces (2, 3) adapted for forming an image of an object on an image plane (4) and having non-axially symmetrical shape are arranged eccentrically to each other in order in the direction of the travel of light from the object. The cross sections of the first and second reflecting faces (2, 3) cut by a plane including the center of the image plane (4) and the vertexes of the reflecting faces (2, 3) are concave. Therefore, light from the object is guided to the image plane (4) without being blocked, and the image is good, thus providing a wide-angle, high-performance reflection optical device.</p> |
