| 摘要 |
<p>A novel reflective optical system having a wide viewing angle and a high resolution is provided. The reflective optical system includes a spherical mirror (11); and a first correcting lens (12), a second correcting lens (13), and a third correcting lens (14) that are provided on the curvature-center side of the spherical mirror sequentially from the incident side. Between the spherical mirror (11) and the third correcting lens (14) is provided a focal plane (15).</p> |
