Method and apparatus for effecting multiple spectral wavelength

Details Method and apparatus for effecting multiple spectral wavelength Method and apparatus for effecting multiple spectral wavelength

1976-07-19

1977-12-20

Richardson, Robert L.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

250339, 350166, H04N 533

Patent

active

040645355

ABSTRACT:
The processing by an infrared television system of field of view radiant emission data such as spatial, radiometric and spectral information is facilitated by apparatus and operating methods that utilize a rotatable narrow band interference filter. The filter intercepts radiant emission from a selected scene at a 0.degree. angle of incidence and at other selected angles of incidence up to 45.degree.. Distinguishing between laser and graybody targets is accomplished by continuously rocking the filter between 0.degree. and 45.degree. at the television vidicon scanning rate or some harmonic thereof.

REFERENCES:
patent: 2834246 (1958-05-01), Foskett et al.
patent: 3039362 (1962-06-01), Dobrowolski
patent: 3046441 (1962-07-01), De Vore
patent: 3641344 (1972-02-01), Markle
Applied Optics, vol. 14, No. 12, pp. 3086-3091, Dec. 1975.

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