Weapon Safety System Using Encoded Optical Clearance Signals

The patent divides the detection space into multiple discrete zones using multiple photodetectors arranged in specific geometric patterns. Each photodetector monitors a specific angular sector, and the control unit processes signals from multiple detectors to determine if the weapon is pointing at an authorized target. This segmentation transforms the broad cone-shaped detection region into discrete, controllable zones, enabling precise directional control while maintaining signal authentication.

The patent transitions from a single omnidirectional detector to a multi-detector array arranged in specific three-dimensional configurations (e.g., tetrahedral, planar arrays). By adding spatial dimensions to the detection system, the patent creates multiple independent detection channels that together define a precise three-dimensional acceptance cone. This dimensional expansion enables the system to reject signals from directions outside the authorized zone while maintaining authentication capabilities.

The patent uses a single emitter that transmits a comprehensive coded signal containing all necessary authentication and identification information, rather than requiring multiple emitters with different codifications. The photodetector array receives this single signal and processes it through spatial filtering and code validation algorithms. This partial action approach achieves the required directional restriction and authentication using fewer physical components, reducing system complexity while maintaining response speed.

The single emitter is designed to perform multiple functions simultaneously: it transmits the authentication code, encodes the target identification, and defines the spatial acceptance zone through its beam geometry. The control unit universally processes signals from any of the multiple photodetectors using the same validation algorithm. This multi-functionality eliminates the need for multiple specialized emitters, simplifying the system while maintaining directional control and response time.

The patent introduces the photodetector array as an intermediary between the emitter and the control unit. The array spatially filters the incoming signals before they reach the code validation logic. Only signals arriving from directions that activate the correct pattern of photodetectors can proceed to code validation. This intermediary spatial filtering layer ensures that both directional precision and code authentication are required simultaneously, preventing tampering while precisely defining the allowed shooting area.

The system performs preliminary spatial validation before code authentication. The control unit first determines which photodetectors are activated and validates the spatial pattern against authorized target positions. Only if the spatial pattern matches an authorized configuration does the system proceed to validate the coded signal. This preliminary action ensures that the broad acceptance cone is subdivided into precise directional zones before authentication occurs, combining both code security and directional precision.