Multispectral linear array multiband selection device

Details Multispectral linear array multiband selection device Multispectral linear array multiband selection device

1984-05-02

1986-07-08

Evans, F. L.

Optics: measuring and testing

By shade or color

With color transmitting filter

356402, 350315, 350318, G01J 351

Patent

active

045990018

ABSTRACT:
Apparatus for detecting multiple spectral bands, individually or concurrently, using linear detector arrays (30, 36). The system employs a beamsplitter (12) to divide the optical source (10) into two or more optical beams (24, 32), which beams are directed at the linear detector arrays (30, 36). Filter trays (38, 40) are positioned in the focal planes of the optical beams (24, 32) so that the beams pass through the filter trays prior to impinging upon the detector arrays (30, 36). Multiple filters (42, 44, 46, 48, 50, 52) are placed on the filter trays (38, 40). Linear actuators (62, 64) positioned adjacent the filter trays (38, 40) translate the trays across the focal planes of the optical beams (24, 32) so that individual filters are positioned in the path of beams, such that those frequencies of the beams that fall within the spectral ranges of the individual bandpass filter through which it passes may be detected by the detector arrays for further examination and analysis.

REFERENCES:
patent: 2985061 (1961-05-01), Krappatsch
patent: 3458702 (1969-07-01), Dryden
patent: 3547541 (1970-12-01), Varnela
patent: 3703133 (1972-11-01), Yost, Jr.
patent: 3837744 (1974-09-01), Egan et al.
patent: 3901600 (1975-08-01), Johnson, Jr. et al.
patent: 4027974 (1977-06-01), Bumgardner
patent: 4342516 (1982-08-01), Chamran et al.
patent: 4396288 (1983-08-01), Helphrey
patent: 4444472 (1984-04-01), Tanaka
patent: 4519707 (1985-05-01), Kuffer
Baxter et al., IBM Technical Disclosure Bulletin, vol. 14, No. 8, Jan. 1972, p. 2410.

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