Eye Tracking Head Mounted Device Dimensional Measurement
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Solution Overview
Problem
Users of head-mounted devices in VR, AR, SR, or MR systems face inconvenience in manipulating buttons or switches due to their mounted position, and existing eye-tracking systems struggle to accurately determine and display dimensional parameters of target objects without precise convergence angles and interpupillary distances.
Innovation Solution
A head-mounted device equipped with an eye-tracking module and a control module that tracks pupil positions and movements to determine target objects, calculates dimensional parameters based on gap distances and movements, and displays this information on a displayer, using convergence angles and interpupillary distances to measure object dimensions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If buttons or switches are disposed on the head mounted device for user manipulation, then the device can receive input commands, but the user experiences inconvenience due to the mounted position on the head
Solution Approach 1:
The patent replaces mechanical input devices (buttons, switches, keyboards) with an eye-tracking based control system. The eye-tracking module detects pupil positions and movements to determine user intent, eliminating the need for physical manipulation of buttons or switches mounted on the head device, thereby improving ease of operation while reducing mechanical complexity
Solution Approach 2:
The patent introduces an eye-tracking module as an intermediary between the user and the control system. This module captures eye movement data and translates it into control commands, serving as a mediator that eliminates the need for direct physical interaction with buttons or switches on the mounted device
2Measurement precision
If existing eye-tracking systems are used without precise convergence angles and interpupillary distances, then the system can track eye movements, but it struggles to accurately determine dimensional parameters of target objects
Solution Approach 1:
The patent implements a feedback mechanism where the system continuously tracks pupil positions, calculates convergence angles and interpupillary distances, and uses this information to determine three-dimensional spatial relationships and dimensional parameters of target objects. This feedback loop enables accurate measurement by constantly refining the geometric model based on real-time eye movement data
Solution Approach 2:
The patent transitions from two-dimensional eye movement tracking to three-dimensional spatial measurement by incorporating convergence angle calculations and interpupillary distance measurements. This dimensional enhancement allows the system to compute accurate dimensional parameters of target objects in 3D space, moving beyond simple 2D position tracking
Data Source
AI summary
A head mounted device include a displayer, an eye-tracking module and a control module. The eye-tracking module is configured for tracking positions and movements of two pupils. The control module is communicated with the displayer and the eye-tracking module. The control module is configured to determine a target object located in front of the head mounted device according to the positions of the pupils. The control module is further configured to obtain a gap distance between the pupils and the target object. The control module is further to calculate a dimensional parameter of the target object according the gap distance and the movements of the pupils. The control module is further to display the dimensional parameter on the displayer.