AR/VR Stylus with Segmented Housing for Precision Tracking
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Solution Overview
Problem
Conventional pistol grip controllers in AR/VR systems are bulky, cumbersome, and induce fatigue due to their weight and design, limiting precision and control during operations in virtualized environments.
Innovation Solution
A stylus device with a housing featuring a substantially linear bottom portion for hand grip and a non-linear, hexagonal loop top portion with planar facets and emitters/sensors for 3D tracking, allowing for precise control and reduced fatigue through balanced ergonomics and 360-degree visibility of tracking elements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a pistol grip controller is used in AR/VR systems, then the user can perform complex operations with three or six degrees-of-freedom tracking, but the controller becomes bulky, unwieldy, and induces fatigue due to its weight and large tracking features
Solution Approach 1:
The controller is divided into two functional segments: a lightweight pen-shaped handle for user interaction and a separate, larger tracking portion with donut-shaped structure. This segmentation allows the handle to be lightweight and ergonomic while the tracking portion contains the necessary sensors and emitters, resolving the contradiction between ease of operation and weight.
Solution Approach 2:
A wireless communication link acts as an intermediary between the lightweight handle and the tracking portion, allowing the handle to communicate position and orientation data without requiring a physical connection. This enables the handle to remain lightweight while maintaining full functionality through wireless transmission of control signals.
2Adaptability or versatility
If a pistol grip controller with large tracking features is used, then six degrees-of-freedom tracking is achieved, but the controller becomes cumbersome and protruding structures reduce precision control
Solution Approach 1:
By separating the tracking features from the handle, the system achieves six degrees-of-freedom tracking capability in the tracking portion while maintaining a compact, precise handle for control operations. The handle can be positioned precisely in 3D space while the tracking portion captures the motion data wirelessly.
Solution Approach 2:
The tracking portion is positioned in a different spatial dimension relative to the handle, allowing the handle to be compact and precise for control while the tracking portion provides comprehensive 6DOF tracking. The wireless connection bridges these dimensional separations, enabling both precision control and advanced tracking capabilities simultaneously.
3Measurement precision
If a pen-grip configuration is used, then fine control and precision are improved, but the controller becomes less stable for extended use
Solution Approach 1:
The controller separates the precision control function in the pen-shaped handle from the stability support function in the tracking portion. The handle provides precise control for extended periods, while the tracking portion's larger structure and weight distribution provide stability and reduce fatigue during extended use.
Solution Approach 2:
The wireless communication system acts as an intermediary that transmits control signals from the precise pen-grip handle to the tracking portion, allowing the handle to maintain its compact, precise form factor while the system as a whole benefits from the stability of the separated tracking structure during extended use.
Data Source
AI summary
In some embodiments, a stylus device can be configured for use in an augmented/virtual (AR/VR) reality environment and can include a first portion and a second portion, where the first portion of the housing is substantially linear and can be configured to be held by a user's hand while the stylus device is in use. The first portion may include a tip configured to operate as an interface between the stylus device and objects within the AR/VR environment. The second portion of the housing may be non-linear and bent to traverse three dimensions including a section of the second portion that is bent longitudinally toward a line co-linear with the first portion of the housing. In some cases, the second portion of the housing may include a plurality of emitters or sensors configured for facilitating a tracking of the stylus device in three-dimensional space within the AR/VR environment.