Imaging spectrometer

Details Imaging spectrometer Imaging spectrometer

1986-07-18

1988-05-10

McGraw, Vincent P.

Optics: measuring and testing

By dispersed light spectroscopy

Utilizing a spectrometer

356333, 350286, G01J 336, G01J 314

Patent

active

047431121

ABSTRACT:
An imaging spectrometer device is disclosed useful for providing a dispersed image of the earth's surface (useful in botanical, geographical, geological, and hydrological scientific studies) from a flying platform. In accordance with this invention, a spectrometer device is provided which can be attached to an existing optical telescope. The spectrometer provides a planar focal plane image which can be processed in a number of manners, for example, by using an array of photosensitive elements. In accordance with the principal feature of this invention, the spectrometer includes an optical system wherein light rays are directed through prisms as they pass through the two symmetrical "legs" of the spectrometer. The spectrometer employs a reflecting concave mirror and prism assemblies having parallel entrance and exit surfaces. In accordance with a first embodiment, a single prism assembly is employed whereas the second described embodiment uses a pair of generally identical prism assemblies.

REFERENCES:
patent: 2605672 (1952-08-01), Stamm
patent: 2670652 (1954-03-01), Sherman

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