HMD Dual Light Source Eye Lip Hand Tracing
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Solution Overview
Problem
Current head-mounted displays (HMDs) for virtual reality require multiple independent devices for eye tracing, lip tracing, and gesture tracing, compromising user comfort and experience.
Innovation Solution
A head-mounted display design that uses dual light sources and a light sensor to simultaneously acquire images of the user's eyes, lips, and hands, allowing for integrated eye tracing, lip tracing, and gesture tracing functions, while minimizing device volume and production costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple independent tracing devices are used for eye tracing, lip tracing, and gesture tracing, then the tracing functions are complete, but the device complexity and user burden increase
Solution Approach 1:
The patent combines eye tracing, lip tracing, and gesture tracing functions into a single head-mounted display device. The imaging unit captures images of the user's eyes, lips, and hands simultaneously, and the processor integrates processing of all tracing data within one device, eliminating the need for multiple separate tracing devices.
Solution Approach 2:
The head-mounted display is designed as a universal device that performs multiple tracing functions. The imaging unit can capture various body parts (eyes, lips, hands) and the processor can process different types of tracing data (eye movement, lip movement, gesture) within a single device, making it a multi-functional platform for all tracing needs.
2Adaptability or versatility
If multiple independent tracing devices are worn on the body, then all tracing functions are available, but user comfort deteriorates
Solution Approach 1:
The patent merges multiple tracing functions into one head-mounted device that the user wears only on their head. This eliminates the need to wear separate tracing devices on the face and hands, significantly improving user comfort while maintaining complete tracing functionality through integrated imaging and processing.
3Ease of operation
If a single device integrates all tracing functions, then user comfort improves, but the imaging and processing requirements become more demanding
Solution Approach 1:
The patent employs different wavelengths of light (first wavelength for eye imaging, second wavelength for lip and hand imaging) to optimize image acquisition for different body parts. This local quality approach ensures that each imaging function uses the most appropriate light characteristics, maintaining high measurement precision despite the integrated design.
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 solution provides a more comfortable and enhanced user experience by integrating multiple tracing functions into a single device, improving image acquisition precision and reducing the need for multiple sensors.
Implementation Method 1
a first light beam and a second light beam are used to acquire an image of a first object and an image of a second object
Data Source
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AI summary
A head mounted display comprises a light sensor, a first light source, a second light source, a transflective mirror, a lens, a display and a filter. The first light source is used for generating a first light beam. The second light source is used for generating a second light beam. The transflective mirror is provided on the light paths of the first light beam and the second light beam. The first light source is provided at the periphery of the lens or the light sensor. The first light beam is reflected by a first object, and enters the light sensor via the lens and the transflective mirror in sequence. The second light source is provided at the periphery of the filter. After leaving the second light source, the second light beam is reflected by a second object outside the head mounted display first, and then enters the light sensor via the filter and the transflective mirror in sequence. A using method of the head mounted display is also provided.