Smart Device Mounted AR Displays for Sensor Alignment
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Solution Overview
Problem
Existing augmented reality (AR) eyewear physically separated from smart devices experiences inaccurate accelerometer readings and different camera perspectives, leading to reduced functionality and ergonomics, as well as visibility issues when used in public.
Innovation Solution
An AR eyewear system is directly mounted on a smart device, sharing processing power and storage, and utilizing the device's ambient light sensor to maintain user privacy, with a retractable design and adjustable positioner for optimal eye relief distance, and a projector positioned on the front side of the waveguide for easier alignment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If AR eyewear is physically separated from smart devices, then user mobility and privacy are improved, but accelerometer readings become inaccurate and camera perspectives differ
Solution Approach 1:
The patent combines the AR waveguide display with the smart device into an integrated unit, merging previously separate components. This ensures synchronized accelerometer readings and camera perspectives while maintaining user mobility, as the AR display remains physically attached to the smart device throughout use.
Solution Approach 2:
The patent pre-positions the waveguide display at a fixed distance from the smart device components (camera, accelerometer) before operation begins. This preliminary positioning ensures that measurement accuracy is maintained from the start of use, eliminating the need for post-positioning adjustments that would compromise either mobility or precision.
2Illumination intensity
If AR eyewear is physically separated from smart devices, then visibility in public is improved, but functionality and ergonomics are reduced
Solution Approach 1:
The integration of waveguide display with smart device maintains full functionality (camera, processor, battery) while providing AR visibility. The merged design allows the device to leverage the smart device's computational resources and sensors, preserving adaptability and versatility that would be lost in a separated configuration.
Solution Approach 2:
The integrated design allows the smart device to serve multiple functions: traditional smartphone operations and AR display operations simultaneously. The waveguide display acts as a universal interface that works with the smart device's existing camera, processor, and sensors, enhancing versatility rather than reducing it.
3Measurement precision
If waveguide-based display is fixed at a specific distance from smart device components, then measurement accuracy is improved, but device flexibility is reduced
Solution Approach 1:
The waveguide display is pre-positioned at the optimal fixed distance from the smart device components during integration. This preliminary positioning ensures that the optical alignment and sensor coordination are optimized before the device is put into service, maintaining measurement accuracy without requiring flexible adjustment mechanisms during operation.
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 the AR experience by utilizing the smart device's existing functionality, improving accuracy and ergonomics, maintaining user privacy, and simplifying alignment of the projector and waveguide, while allowing simultaneous viewing of image data and real-world light.
Implementation Method 1
planar waveguides can be designed to utilize diffraction gratings to diffract and couple incident light into the waveguide structure such that the in-coupled light can proceed to travel within the planar structure via total internal reflection (TIR)
Implementation Method 2
planar waveguides can be designed to utilize diffraction gratings to diffract and couple incident light into the waveguide structure
Implementation Method 3
the monomers polymerize, and the mixture undergoes a photopolymerization-induced phase separation, creating regions densely populated by liquid crystal micro-droplets
Implementation Method 4
the mixture undergoes a photopolymerization-induced phase separation, creating regions densely populated by liquid crystal micro-droplets, interspersed with regions of clear polymer
Implementation Method 5
The resulting grating, which is commonly referred to as a switchable Bragg grating (SBG), has all the properties normally associated with volume or Bragg gratings but with much higher refractive index modulation ranges combined with the ability to electrically tune the grating over a continuous range of diffraction efficiency
Data Source
AI summary
Augmented reality eyewear allows users to see both light containing image data and light from the world together to superimpose the image data onto the real world. Augmented reality eyewear may connect to a smart device. Augmented reality eyewear may include various functionality which may be duplicated on the smart device. It would be advantageous to share the functionality on both the augmented reality eyewear and the smart device. The present disclosure relates to smart device mounted augmented reality displays which may share the functionality of the smart device for the augmented reality displays.