Spectral filter

Details Spectral filter Spectral filter

1987-07-17

1988-12-13

Evans, F. L.

Optics: measuring and testing

By dispersed light spectroscopy

With aperture mask

356326, 356330, G01J 302

Patent

active

047906545

ABSTRACT:
Within a surveillance system there is included optical processor means for receiving a multispectral light image at an input and providing a spectrally modified image at an output, which comprises: an input means for receiving a light image; light dispersing means coupled to said input means for dispersing said received image into a constituent plurality or spectral components and distributing said plurality of spectral components over a predetermined area; means located in said area responsive to said spectral components located in said space for modifying at least one of said spectral components and for reflecting said spectral components, including modified spectral components, to a common plane in essentially overlapping registered relationship to reconstitute a multispectral image of different spectral content so as to eliminate clutter from within the image. Other disclosed systems provide for communications and color matching.

REFERENCES:
patent: 4615619 (1986-10-01), Fateley
patent: 4705396 (1987-11-01), Bergstrom
Young, IBM Technical Disclosure Bulletin, vol. 8, No. 1, Jun. 1965, pp. 111 and 112.

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