Invisible radiation imaging device

Details Invisible radiation imaging device Invisible radiation imaging device

1975-06-23

1976-08-24

Willis, Davis L.

Radiant energy

Infrared-to-visible imaging

Including means for scanning field of view

250372, H01J 3149

Patent

active

039768821

ABSTRACT:
A device for visually imaging invisible radiation, having a detector and ht emitting diode circuit interposed between two identical coded rotating discs, wherein the LED provides an output in response to the invisible radiation passed by the first disc and detected by the detector. That portion of LED output passed by the second disc is the output of the system, which output will visually appear as a gray field with a bright spot corresponding in position to the position of the radiation source in the field of view of the system. The appearance of the output results from the patterns of the disc which permits 50% transmissivity at any moment in time when an infrared source is present. The visual appearance resulting from at least one complete rotation of the disc is a field of 25% illumination with bright spots of 50% illumination therein corresponding to bright spots in the field of view.

REFERENCES:
patent: 2946255 (1960-07-01), Bolay
patent: 3652856 (1972-03-01), Paul

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