| 摘要 |
A catadioptric photographic lens include; a first reflecting mirror, a second reflecting mirror, and a lens group, arranged in order from an object so that light reflected by the first reflecting mirror is reflected by the second reflecting mirror before passing through the lens group and forms an image of the object upon a predetermined image plane wherein; the first and the second reflecting mirror are off-center on the reference plane; reflection surfaces of the first and the second reflecting mirror are rotationally asymmetric aspheric surfaces; the reflection surface of the first reflecting mirror is concave toward the object on the reference plane and on the first orthogonal plane; and the surface closest toward the second reflecting mirror in the lens group having two lenses made from the same optical material as one another is a rotationally asymmetric aspheric surface. |
