Optical Tracking for Low-Cost VR Headsets
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Solution Overview
Problem
Low-cost virtual reality systems face challenges in accurately tracking user movement and multiple user positions within virtual reality scenes, particularly due to limitations in sensing and tracking technology.
Innovation Solution
A tracking system comprising an attachable device with an optical emitting module and a tracking device equipped with an optical sensor, which calculates and transmits spatial coordinates, enabling precise tracking of head-mounted display devices and multiple users, even in low-cost setups.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If low-cost virtual reality systems are used, then cost is reduced, but movement sensing precision deteriorates
Solution Approach 1:
The patent replaces complex mechanical tracking systems with an optical tracking system. The attachable device emits optical radiation that is detected by the tracking device's optical sensor, eliminating the need for expensive mechanical sensors while achieving precise movement tracking through optical field interactions.
Solution Approach 2:
The patent introduces optical radiation as an intermediary between the attachable device and the tracking device. The optical emitting module emits radiation that carries spatial information, which is then received by the optical sensor, enabling indirect but accurate tracking without direct mechanical contact or complex sensing mechanisms.
2Adaptability or versatility
If multiple user positions are tracked, then interaction capability is improved, but tracking complexity increases
Solution Approach 1:
The patent segments the tracking system into independent attachable devices, each with its own optical emitting module. Each device independently emits optical radiation that can be individually tracked by the tracking device, allowing multiple users to be tracked simultaneously without increasing system complexity, as each user's device operates autonomously.
Solution Approach 2:
The tracking device is designed with universal capability to track multiple attachable devices simultaneously. The optical sensor receives optical radiation from multiple sources and the processing unit calculates spatial coordinates for each device independently, enabling multi-user interaction without requiring separate tracking systems for each user.
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 accurate spatial tracking of head-mounted display devices and multiple users, enhancing the precision of movement detection and enabling effective interaction within virtual reality environments, even in low-cost systems.
Implementation Method 1
The attachable device includes an optical emitting module for emitting optical radiation
Data Source
AI summary
A tracking system includes an attachable device and a tracking device. The attachable device is removably mounted on a head mounted display device. The attachable device includes an optical emitting module for emitting optical radiation. The tracking device is communicated with the attachable device. The tracking device includes an optical sensor for receiving the optical radiation. The tracking device calculates spatial coordinates of the attachable device relative to the tracking device according to the optical radiation sensed by the optical sensor. The tracking device transmits the spatial coordinates to the attachable device or the head mounted display device.