Patent
Sunshield and light diffuser
TLDR
In this article, two photodetectors are spaced apart by an accurately known distance along a ballistic velocity measuring path exposed to ambient light from the sky, and a sunshield and light diffuser structure for each (or both) of the photodeteectors to eliminate light reflection from the projectile which can cancel the "shadow" of the projectile and prevent the photodelector from responding to passage of the object, and to increase the level of light to the phototeectors by diffusing direct sunlight.Abstract:
In a ballistic velocity measuring device, two photodetectors are spaced apart by an accurately known distance along a projectile path exposed to ambient light from the sky. The invention comprises a sunshield and light diffuser structure for each (or both) of the photodetectors to eliminate light reflection from the projectile which can cancel the "shadow" of the projectile and prevent the photodetector from responding to passage of the projectile; and to increase the level of light to the photodetectors by diffusing direct sunlight.read more
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Patent
Moving object monitoring system
TL;DR: In this article, a method for monitoring an object passing through a frame space of a light panel, the light panel having at least one light emitter on the first side, the at least 1 LBS for continuously emitting a fan-shaped light beam, across the frame through which and beyond which an object may pass, and at least LBS on the second side of the frame and associated electronic sensing apparatus connected to the LBS.
Patent
Computer-controlled game system
TL;DR: In this article, a computer-controlled game system comprising a computer unit (10 ) which is adapted for the generation of a game sequence from at least one computer program and from game sequence data, a playback device (12 ) which was adapted to play back the game sequence in a projection zone and which is connected with the computer unit, at least a transmitter means (16) which is used for emitting an electromagnetic beam (S) into a predeterminable partial section of the projection zone, a detector means (18) which was used for the detection of the electromagnetic beam when
Patent
Infrared photodetector apparatus for measuring projectile velocity
TL;DR: In this paper, a ballistic velocity measurement apparatus including two screens spaced apart at a known fixed distance for providing time measurement start and stop signals indicative of the passage of a ballistic projectile through a light curtain formed by contiguous focused light beams from plural infrared light sources which causes a perturbation or fluctuation in the light intensity level received by one or more photo-optic sensors.
Patent
Ballistic velocity measurement system having dual sensor unit with parabolic slit mirrors
TL;DR: In this paper, a chronograph for determining the muzzle velocity of a projectile fired from either a small arm or a rifle includes two IR light beam assemblies attached to a platform with respective photodetection circuits and a clamp for holding a vertical shot dispersion monitoring target plate at a rear extremity of the platform.
Patent
Dual zone solar sensor
TL;DR: In this article, a dual zone solar sensor (10) incorporating a calibratable diffuser (50) overlying a vertically oriented circuit board (20) having at least one photodetector (21, 22) affixed to either side of the circuit board in a vertical plane.
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Patent
Photoelectric inspection device
TL;DR: In this article, an apparatus for detecting and recording the movements of illuminated or light-reflective bodies past a station or plurality of stations in succession is described, and sensitive photo-electric devices for indicating and recording these movements are used.