Optical Touch System Gesture Detection for Large Screens

The patent replaces conventional capacitive touch detection with optical detection using light sources and optical sensors. This substitution enables large screen sizes while maintaining accurate touch detection, as the optical system can cover larger areas without the cost and technical limitations of capacitive materials.

The patent introduces optical lenses as intermediary elements between the touch surface and sensors. These lenses guide light from touched positions to specific sensor regions, enabling accurate position detection across large screens while keeping the touch surface itself simple and cost-effective.

The patent divides the optical detection system into multiple independent lens-sensor units distributed across the screen. This segmentation allows each unit to be manufactured and calibrated separately, then assembled into a large-scale system, making large screen integration feasible while maintaining low cost and high accuracy.

The patent designs universal lens-sensor modules that can be applied to various screen sizes and configurations. These modular units provide multi-functional capability for touch detection, gesture recognition, and position tracking, enabling the same design to be scaled across different screen dimensions.

The patent transitions from traditional edge-based one-dimensional interface layout to multi-dimensional gesture-based control across the entire screen surface. Users can perform operations by making gestures in the air above the screen or on the screen surface, eliminating the need to reach edge locations and enabling faster, more natural interactions.

The patent creates virtual function keys and interface elements that can be invoked anywhere on the screen through gesture recognition. Instead of fixed physical locations, interface functions are copied and made accessible across the entire screen area, allowing users to access any function from any position without moving their hands to edges.