Optical system

Details Optical system Optical system

1983-03-23

1985-02-05

Arnold, Bruce Y.

Optics: measuring and testing

Range or remote distance finding

With photodetection

350505, 350619, 356323, 356330, 356331, G02B 510

Patent

active

044975406

ABSTRACT:
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.

REFERENCES:
patent: 2743646 (1956-05-01), Strong
patent: 2995973 (1961-08-01), Barnes et al.
patent: 3048080 (1962-08-01), White
patent: 3345907 (1967-10-01), Wada
patent: 3837744 (1974-09-01), Egan et al.
patent: 3865490 (1975-02-01), Grossman
patent: 3951526 (1976-04-01), Grossman
patent: 4029389 (1977-06-01), Runciman

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