Eyeball Motion Tracking Using RADAR and LIDAR Frequency Shifts
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Solution Overview
Problem
Conventional eyeball motion tracking systems lack the speed and accuracy necessary for precise position information determination, especially at extended distances, and are often invasive.
Innovation Solution
Utilizing a detection and ranging system, such as RADAR or LIDAR, to measure electromagnetic radiation frequency shifts from multiple points on the eyeball, enabling instantaneous position information determination with reduced invasiveness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional eyeball motion tracking systems are used, then the system structure is simple, but the position information determination speed and accuracy are insufficient
Solution Approach 1:
The patent replaces conventional mechanical/optical tracking systems with a detection and ranging system that uses electromagnetic radiation (RADAR or LIDAR) to measure frequency shifts. This substitution enables instantaneous position determination with high accuracy while maintaining manageable system complexity through the use of established electromagnetic detection principles.
Solution Approach 2:
The patent changes the measurement parameter from direct position measurement to frequency shift measurement of electromagnetic radiation. By measuring the Doppler frequency shift of reflected or scattered radiation from multiple points on the eyeball, the system can calculate position information instantaneously with high precision.
2Speed
If conventional eyeball motion tracking systems are used, then the system is easier to implement, but the tracking speed is insufficient
Solution Approach 1:
The patent replaces sequential mechanical measurement methods with parallel electromagnetic radiation measurement. Multiple points on the eyeball are measured simultaneously by directing electromagnetic radiation at multiple locations, enabling instantaneous position determination without the speed limitations of conventional sequential tracking.
Solution Approach 2:
The system performs preliminary calibration by storing frequency information from multiple points on the eyeball when the eyeball is in a known reference position. This preliminary action enables rapid subsequent position calculations by comparing current frequency shifts against the stored reference, achieving high-speed tracking.
3Measurement precision
If conventional eyeball motion tracking systems are used, then the system is less complex, but the measurement accuracy from extended distances is insufficient
Solution Approach 1:
The patent changes from direct optical imaging to electromagnetic radiation frequency shift measurement. The Doppler effect provides a distance-independent measurement mechanism, allowing accurate position determination from extended distances where conventional optical systems would suffer from reduced resolution and signal strength.
Solution Approach 2:
The patent divides the eyeball surface into multiple measurement points and directs electromagnetic radiation at each point separately. By measuring frequency shifts from multiple segmented locations and synthesizing the position information, the system achieves high accuracy from extended distances that would be impossible with single-point conventional systems.
4Loss of time
If conventional eyeball motion tracking systems are used, then the system is less invasive, but the position information determination is not instantaneous
Solution Approach 1:
The patent replaces sequential mechanical measurement with parallel electromagnetic detection. Electromagnetic radiation travels at the speed of light and returns immediately from the eyeball surface, enabling instantaneous position determination without the mechanical delays inherent in conventional tracking systems.
Solution Approach 2:
The system performs preliminary calibration by storing frequency information from multiple points when the eyeball is in a known reference position. This pre-stored reference information enables instantaneous position calculation during actual tracking by simple comparison, eliminating processing latency while maintaining system simplicity.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The system provides fast, accurate, and non-invasive tracking of eyeball motion from a distance, allowing for improved imaging and motion analysis.
Implementation Method 1
measure electromagnetic radiation frequency shifts from multiple points on the eyeball
Data Source
AI summary
Detecting position information related to a face, and more particularly to an eyeball in a face, using a detection and ranging system, such as a Radio Detection And Ranging (“RADAR”) system, or a Light Detection And Ranging (“LIDAR”) system. The position information may include a location of the eyeball, translational motion information related to the eyeball (e.g., displacement, velocity, acceleration, jerk, etc.), rotational motion information related to the eyeball (e.g., rotational displacement, rotational velocity, rotational acceleration, etc.) as the eyeball rotates within its socket.