Near-Eye Display Waveguide Nesting and Edge Caching
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Solution Overview
Problem
Existing mixed reality and augmented reality near-eye displays face challenges in being lightweight, low-cost, and compact while providing a wide virtual image field of view and minimizing vergence-accommodation mismatch.
Innovation Solution
The development of mobile computing systems featuring wearable components that utilize connected communication devices to provide location-based information, reducing latency and computational load by leveraging local storage and cloud resources.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Weight of moving object
If mixed reality or augmented reality near-eye displays are made lightweight and compact, then wearability and user comfort are improved, but the field of view and optical performance tend to deteriorate
Solution Approach 1:
The patent implements a compact optical engine that nests multiple optical components (waveguides, gratings, lenses) within a small form factor housing. The waveguide structure itself is nested within the near-eye display frame, allowing complex optical functionality to be contained in a lightweight, compact package while maintaining adequate field of view through efficient use of internal space.
Solution Approach 2:
The patent utilizes waveguide technology that directs light through three-dimensional paths within a thin planar structure. By employing volumetric light guiding and multiple focal planes, the system achieves extended field of view and depth perception without proportionally increasing the physical size or weight of the near-eye display.
2Reliability
If multiple focal planes are implemented to reduce vergence-accommodation mismatch, then visual comfort is improved, but device complexity and manufacturing difficulty increase
Solution Approach 1:
The patent creates multiple focal planes by generating duplicate virtual images at different depths using waveguide gratings and optical elements. Each focal plane is a copied representation of the same visual content, allowing the user's eye to accommodate to different distances while viewing the same information, thereby reducing vergence-accommodation mismatch without requiring entirely separate optical systems for each focal depth.
3Adaptability or versatility
If location-based information is retrieved from distant cloud resources, then information availability is improved, but latency and computational load increase
Solution Approach 1:
The patent implements a hierarchical content delivery system where location-based information is pre-fetched and cached in local storage devices (edge servers, base stations, or mobile devices) before being needed. When a user enters a specific geographic area, the system has already retrieved and stored relevant augmented reality content locally, enabling immediate display without real-time cloud communication delays.
Solution Approach 2:
The patent introduces edge computing infrastructure and local servers as intermediary components between the user's near-eye display and distant cloud resources. These intermediaries cache and pre-process location-based content, serving it locally when needed and only communicating with remote cloud systems when content needs to be updated or when the user transitions to new locations, thereby reducing latency while maintaining comprehensive information availability.
Data Source
AI summary
Examples of the disclosure describe systems and methods relating to mobile computing. According to an example method, a first user location of a user of a mobile computing system is determined. A first communication device in proximity to the first user location is identified based on the first user location. A first signal is communicated to the first communication device. A first information payload based on the first user location is received from the first communication device, in response to the first communication device receiving the first signal. Video or audio data based on the first information payload is presented to the user at a first time during which the user is at the first user location.