Radiant energy – Photocells; circuits and apparatus – Combined with diverse-type device
Patent
1984-12-14
1987-03-24
Wan, Gene
Radiant energy
Photocells; circuits and apparatus
Combined with diverse-type device
H01J 4014, F41J 504
Patent
active
046527400
DESCRIPTION:
BRIEF SUMMARY
TECHNICAL FIELD
This invention relates generally to a target responsive to infrared rays generated by a model gun.
BACKGROUND ART
Generally, targets for model guns respond to visible rays. The visible ray source within the gun, however, causes the gun to be large in size and weight. This is a serious problem in a model gun, wherein the touch, external appearance and design of the actual revolver are respected while compactness and performance accompanied by light, sound and smoke are required. Available model guns do not meet these requirements.
DISCLOSURE OF INVENTION
Infrared rays are generated in a model gun when a gun powder cap explodes within a powder chamber. The infrared rays are directed forward of the gun, with the gun barrel conduit providing a high degree of directivity. Infrared rays are received by a target which operates only when the gun is fired accurately at a predetermined central point. When the gun is fired at other areas of the target, the volume of infrared rays received by a sensor located at the center of the target is too small to be detected. Special skill is, therefore, required to fire the gun, enhancing the pleasure of play and improving marksmanship.
An object of the invention, therefore, is to provide a device to determine whether infrared rays generated from a model gun are projected accurately onto a central portion of the target. A secondary object is to provide in the target diversified display functions, such as score counting and lighting.
Another object is to provide a gun target for marksmanship training wherein live ammunition is not used but the "feel" of an actual gun is provided.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is a block diagram of the invention;
FIG. 2a is a diagram of a relay for projecting an item in response to a "hit";
FIG. 2b is a perspective view of the object projector symbolized in FIG. 2a;
FIG. 2c is a circuit diagram of an infrared ray responsive amplifier;
FIG. 3a is a circuit diagram of an infrared ray responsive display;
FIG. 3b is a perspective view of a numerical display symbolized in FIG. 3a;
FIG. 3c is a simplified circuit diagram of an analog to digital converter for driving the digital display of FIGS. 3a and 3b;
FIG. 4a is a circuit diagram of an infrared ray responsive indicator lamp;
FIG. 4b is a perspective view of the lamp assembly; and
FIG. 4c is a block diagram of a delay timer circuit for maintaining the lamp energized for a predetermined time.
BEST MODE FOR PRACTICING THE INVENTION
In FIG. 1, infrared rays L generated by a model gun (not numbered) coincident with the explosion of a gun powder cap is projected along the extension line of the gun barrel. A light receiving sensor 2, responsive to the infrared rays through lens 1, develops a signal that is amplified by amplifier 3 to operate scoring and lighting devices in accordance with the invention.
In FIG. 2, a relay RY is closed in response to the output of sensor 2 which in turn indexes electromagnet 4 interlocked with the relay RY. Movement of the electromagnet indicates that the center of the target whereat the light receiving sensor 2 is located has been hit by infrared rays. Spring stopper 5 is thus indexed, shown in FIG. 2b, to release a spring wire 6, which is elastic and bent into a U-shape or provided in the form of a spring. The wire 6 may project a device, such as a small can be shown, placed on the body of the wire. Since the spring stopper 5 is installed such that its end hook can be released from the wire as the stopper is indexed by the electromagnet, the wire recoils upon release, projecting the can. This display is evidence that the infrared rays projected by the gun have struck the center of the target.
When the volume of the infrared ray L is reduced, indicating that the gun is aimed off target center, the relay RY is turned off.
In FIG. 2c, the output of light receiving sensor 2 is amplified by photoelectric amplification circuit 3, incorporated together with a scoring and lighting system within a case (not shown) made of an electrically in
REFERENCES:
patent: 4269415 (1981-05-01), Thorne-Booth
patent: 4296929 (1981-10-01), Meyer et al.
The Collector's Armoury, Inc.
Wan Gene
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