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    • 3. 发明授权
    • Optical system
    • 光学系统
    • US4497540A
    • 1985-02-05
    • US478130
    • 1983-03-23
    • James B. BreckinridgeNorman A. PageRoland V. ShackRobert R. Shannon
    • James B. BreckinridgeNorman A. PageRoland V. ShackRobert R. Shannon
    • G01J3/14G01J3/28G02B17/06G02B5/10
    • G01J3/14G01J3/2803G01J3/2823G02B17/0615G01J3/0205G01J3/0208
    • Disclosed is an optical system used in a spacecraft to observe a remote surface and provide a spatial and spectral image of this surface. The optical system includes aspheric and spherical mirrors aligned to focus at a first focal plane an image of the surface, and a mirror at this first focal plane which reflects light back on to the spherical mirror. This spherical mirror collimates the light and directs it through a prism which disperses it. The dispersed light is then focused on an array of light responsive elements disposed at a second focal plane. The prism is designed such that it disperses light into components of different wavelengths, with the components of shorter wavelengths being dispersed more than the components of longer wavelengths to present at the second focal plane a distribution pattern in which preselected groupings of the components are dispersed over essentially equal spacing intervals.
    • 公开了一种在航天器中用于观察远程表面并提供该表面的空间和光谱图像的光学系统。 该光学系统包括对齐以在第一焦平面上聚焦于该表面的图像的非球面和球面镜,以及在该第一焦平面处将光反射回球面镜的反射镜。 该球面镜准直光并将其引导通过分散它的棱镜。 然后将分散的光聚焦在设置在第二焦平面处的光响应元件的阵列上。 棱镜被设计成使得其将光分散到不同波长的分量中,其中较短波长的分量分散得比较长波长的分量多于在第二焦平面处呈现的分布模式,其中组分的预选分组分散在 基本相等的间隔间隔。