| 摘要 |
<p>The catadioptric system includes a first optical imaging system (catadioptric part) causing a light flux from an object to form an intermediate image and a second optical imaging system (dioptric part) causing the light flux from the intermediate image to form an image. In the first optical imaging system, the light flux sequentially passes a first transmissive portion, a second reflective portion, a first reflective portion and a second transmissive portion. In the second optical imaging system, consecutive four lens surfaces among plural lens surfaces placed between an aperture stop and an image surface have a negative combined refractive power, and a condition of−0.52<φ4n—max·Ymax<−0.14 is satisfied,φ4n—max represents a maximum value of the negative combined refractive power, and Ymax represents a maximum object height in a field-of-view of the catadioptric system at the object.</p> |
