Spatial/spectral real time imaging

Details Spatial/spectral real time imaging Spatial/spectral real time imaging

1985-07-05

1987-03-17

Evans, F. L.

Optics: measuring and testing

For optical fiber or waveguide inspection

356305, 356328, G01J 300

Patent

active

046503218

ABSTRACT:
Apparatus and method are disclosed for obtaining from a two dimensional field of view containing numerous unresolved sources of irradiation of various unknown wavelengths, the wavelengths incident on objects in the field using significantly fewer pixels than required if a conventional imaging spectrometer were employed. A reflective telescope (10, 12) includes a concave reflective grating (14) after the secondary mirror (12). Undiffracted radiation from the grating forms an image on a first detector array (16). Diffracted radiation forms an image on a second detector array (18). The zero order images provide spatial identification of the objects and a set of wavelength independent reference locations from which the relative displacement of the diffracted radiation provides spectral information.

REFERENCES:
patent: 3363525 (1968-01-01), Teeple, Jr.
patent: 3992099 (1976-11-01), Laughlin
patent: 4037959 (1977-07-01), Bumgardner
patent: 4146332 (1979-03-01), Moore
patent: 4320462 (1982-03-01), Lund et al.
patent: 4346992 (1982-08-01), Schwartz

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