Education and demonstration – Organized armed or unarmed conflict or shooting – Gunnery
Patent
1985-06-12
1986-10-28
Picard, Leo P.
Education and demonstration
Organized armed or unarmed conflict or shooting
Gunnery
434 19, 273310, F41G 326
Patent
active
046196161
ABSTRACT:
Optical aim-training apparatus 10 (FIG. 1) for a rifle 20, or the like comprises a CRT displaying a target image on a scanned line raster. The rifle is simulated and has photo-detection device 21 contained in a housing 22 located adjacent the barrel 19. The photodetection device has a detection axis 23, aligned parallel with the rifle bore axis, which 23 intersects the screen at detection point 34. The rifle sighting device has a sightline also parallel to the bore axis and detection axis intersecting the screen at aim point 33. The offset between aim and detection points is determined by a calibration procedure and when aim is taken at a target image and the trigger depressed a marker region of raster 29, displaced from the image by the calibration offset, is brightened temporarily. A series of light pulses due to scanning of the marker region raster is detected and the screen location of the center of the detector field of view i.e. detection point 34, found. With said calibration offset this enables the actual aim point to be found without masking the target image screen brightening necessary to enable photodetection. A further detection point (FIG. 5) may be defined and the relationship between the two detection points used to monitor the orientation of the rifle about the bore axis and its distance from the screen.
REFERENCES:
patent: 4065860 (1978-01-01), Linton et al.
patent: 4175748 (1979-11-01), Yokoi
patent: 4395045 (1983-07-01), Baer
Ferranti plc
Picard Leo P.
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