Radiant energy – Infrared-to-visible imaging – Including means for scanning field of view
Patent
1977-12-09
1987-08-18
Buczinki, Stephen C.
Radiant energy
Infrared-to-visible imaging
Including means for scanning field of view
350 68, 358113, G02B 2608, G02B 2610
Patent
active
046879331
ABSTRACT:
An optical and mechanical scanner including a device for scanning a field of vision to detect and recognize with high resolution distant objects in the field of vision. Scanning is accomplished in two directions including a direction x for line scanning and a direction y for raster or image scanning. One embodiment of the scanning device includes, in order along the direction of a path of a mean incident beam from the field of vision, an objective, a raster scanning mirror for scanning in the y direction, a field mirror which delimits the field of the objective in the x direction, a rotating drum and an image transport system for line scanning in the x direction, the field mirror deflecting the beams towards the drum, and a detector sensitive to the radiation contained in the beams, the scanning device ensuring convergence of the beams at the detector.
The scanner also includes a system for direct visualization of the image scanned, and in one embodiment the scanner has scanning and visualization beams using different paths symmetrical with respect to a plane. The direct visualization system includes the drum, another reflecting surface of the scanning mirror, the detector, a second image transport system and a second field mirror which are symmetrical about an axis with respect to the other transport system and field mirror, respectively, a plane mirror, an electroluminescent diode symmetrical about the plane mirror with respect to the detector, and a circuit for feeding signals to the diode corresponding to the field image being scanned.
REFERENCES:
patent: 3817593 (1974-06-01), Harris et al.
patent: 3829192 (1974-08-01), Wheeler
patent: 3912927 (1975-10-01), Hoffman, II
Buczinki Stephen C.
Telecommunications Radioelectriques et Telephoniques TRT
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