Disparity Sensing Port for AR Display Image Alignment
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Solution Overview
Problem
Existing display systems, such as head-mounted devices, often suffer from image misalignment, leading to poor visual acuity and discomfort due to unmerged or displaced images, which can cause dizziness and eye fatigue.
Innovation Solution
Incorporation of a disparity sensing port in the display system to detect and correct image disparities using volume Bragg gratings in a waveguide configuration, allowing for precise alignment of projected images.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a head-mounted device uses multiple projectors to generate binocular vision, then the visual experience is enhanced, but image misalignment occurs causing visual discomfort
Solution Approach 1:
The patent implements a feedback mechanism where a camera captures the projected images, a processor analyzes the captured images to detect misalignment between left and right eye images, and the system automatically adjusts the projection parameters to correct the disparity. This closed-loop feedback system continuously monitors and corrects image alignment, resolving the technical contradiction between providing binocular vision and preventing visual discomfort.
2Object-affected harmful factors
If image correction is implemented to fix misalignment, then visual comfort is improved, but system complexity increases
Solution Approach 1:
The patent makes the existing camera serve multiple functions: it acts as both a content capture device for the augmented reality experience and a measurement device for detecting image misalignment. By reusing the camera for dual purposes, the system implements image correction functionality without adding dedicated sensing hardware, thus improving visual comfort while minimizing the increase in system complexity.
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 visual comfort by ensuring aligned and merged images, reducing visual discomfort and improving user experience in augmented and mixed reality environments.
Implementation Method 1
detect and correct image disparities using volume Bragg gratings in a waveguide configuration
Data Source
AI summary
According to examples, a system for detection, analysis and correction of disparities in display systems utilizing one or more disparity sensing port is described. The system may include a processor and a memory storing instructions. In addition, the system may include a first lens including a first waveguide for displaying a first image and a second lens including a second waveguide for displaying a second image. Furthermore, the system may include a first projector associated with the first lens to propagate first display light associated with the first image, a second projector associated with the second lens to propagate second display light associated with the second image and a disparity sensing port to receive the first display light and the second display light to determine a disparity associated with the first image and the second image.