| 摘要 |
<p>Certain embodiments described herein comprise a telescope comprising primary and secondary mirrors and a corrector. The primary mirror has a first curved reflecting surface having a non-hyperbolic shape. The second secondary mirror has a second curved reflecting surface having a hyperbolic shape. The corrector comprises substantially optically transmissive material. The primary mirror, the secondary mirror, and the corrector are disposed along an optical path such that light propagates through the corrector to the primary mirror and from the primary mirror to the secondary mirror. In certain embodiments, the shapes of the first and second curved reflecting surfaces of the primary and second mirrors, respectively, and the shape and the index of refraction of the optically transmissive material of the corrector are such that the telescope is aplanatic.</p> |
