Real-time optical filtering system with spatial and temporal enh

Details Real-time optical filtering system with spatial and temporal enh Real-time optical filtering system with spatial and temporal enh

1982-01-06

1984-06-12

Arnold, Bruce Y.

G02B 2746

Patent

active

044538049

ABSTRACT:
In a system of real-time coherent optical filtering of visual imagery which encompasses a laser and a set of lenses for transmitting a visual target image of an input, a Fabry-Perot interferometer for filtering the target image to produce a filtered target image at an output having a predetermined bandwidth of spatial frequency information, the improvements relate to transmitting and original unfiltered image to the output for overlaying the filtered image for spatial enhancement of the predetermined spatial frequency bandwidth of information in the filtered image, and flickering the filtered image to achieve temporal enhancement of the visual information in the spatial frequency bandwidth of interest.

REFERENCES:
patent: 3459467 (1969-08-01), Kantor
patent: 3915573 (1975-10-01), Knoll et al.
patent: 4152674 (1979-05-01), Taguchi
Indebetouw, G., "Tunable Spatial Filtering with a Fabry-Perot etalon," Applied Optics, Mar. 1, 1980, vol. 19, No. 5, pp. 761-764.

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