Low-Profile Light-Emitting Accessory Body for Accurate VR Tracking
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Solution Overview
Problem
Existing body trackers in virtual reality technology suffer from inaccurate positioning, leading to poor user immersion and experience due to their design, which results in poor tracking accuracy.
Innovation Solution
The accessory body is designed with a height less than its projection diameter, featuring light-emitting elements on the peripheral side, and optionally includes a light concentrator and IMU sensor for improved tracking and positioning accuracy, even when worn at angles or distances from the headset.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If body trackers are tied to the body for identification and positioning, then the device can be worn and used, but the positioning accuracy deteriorates leading to poor user immersion
Solution Approach 1:
The patent transitions from traditional body-attached tracking to spatial positioning using light-emitting elements arranged in specific geometric patterns. The accessory body uses multiple light-emitting elements positioned at different spatial coordinates, allowing the camera to calculate position through triangulation and geometric relationships rather than direct body contact, thereby improving positioning accuracy while maintaining ease of use.
Solution Approach 2:
The patent utilizes light emission properties where light-emitting elements emit visible or invisible light that can be detected by the camera. The light characteristics (intensity, pattern, or wavelength) serve as identification markers that enable accurate positioning and recognition without requiring direct body attachment, resolving the contradiction between measurement precision and ease of operation.
2Measurement precision
If light-emitting elements are disposed on the accessory body, then tracking capability is improved, but device complexity increases
Solution Approach 1:
The patent divides the tracking system into separate functional components: the accessory body with light-emitting elements serves as the tracking target, while the camera on the headset performs detection and calculation. This segmentation allows the accessory body to remain relatively simple while achieving high tracking accuracy through the distributed light-emitting elements arranged in geometric patterns.
Solution Approach 2:
The patent uses light-emitting elements to create optical copies or projections of positional information. The light emitted from the elements at different locations creates a spatial pattern that the camera can detect and interpret, effectively copying the positional data in optical form without requiring complex mechanical or electronic sensors in the accessory body itself.
3Ease of operation
If the accessory body height is reduced below projection diameter, then wearability and comfort are improved, but manufacturing precision requirements increase
Solution Approach 1:
The patent specifies a particular geometric parameter relationship where the height of the accessory body is less than the contour diameter of its projection plane. This parameter change creates a flat, disc-like profile that enhances wearability and comfort. The design accommodates manufacturing tolerances by using relative dimensional relationships rather than absolute precision requirements, allowing flexible production while maintaining the intended form factor.
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
Enhances tracking accuracy and user experience by allowing cameras to collect light spots from the peripheral side, improving positioning and reducing errors in body tracker placement.
Implementation Method 1
the accessory body has at least one first light-emitting element, and light of the first light-emitting element is emitted from a peripheral side of the accessory body
Implementation Method 2
a first light concentrator, corresponding to each first light-emitting element, is disposed on the accessory body, and the first light concentrator has a light concentrating cavity for concentrating light
Data Source
AI summary
The present application relates to the technical field of electronic devices, and in particular, to an accessory body and an accessory. The height of the accessory body is less than the contour diameter of the projection plane, and a projection of the accessory body on a plane which is perpendicular to a height direction of the accessory body is the projection plane, and the accessory body has at least one first light-emitting element, and light of the first light-emitting element is emitted from a peripheral side of the accessory body. In this way, it can make it easy to put on the accessory body. Moreover, it can make it easy to track and position the accessory body through light of the first light-emitting element, improve the accuracy of positioning and enhance the user experience.