Waveguide Display Binocular Deformation Compensation With Light Feedback
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Solution Overview
Problem
Existing VR and AR systems face challenges in maintaining accurate alignment of binocular images due to deformations in the display device, leading to image distortion and physiological strain on the user's visual system.
Innovation Solution
A display subsystem comprising first and second waveguide apparatuses with projection subassemblies and a light sensing assembly to detect mismatches between monocular images, allowing for correction of alignment issues through a control subsystem that modifies calibration profiles based on detected parameters.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If head-worn displays are used to present virtual images, then immersive experience is improved, but binocular deformation and image alignment accuracy deteriorate
Solution Approach 1:
The system uses light sensing assemblies to detect actual light rays exiting the waveguide apparatus and feeds this information back to the control subsystem. The control subsystem then adjusts the projection subassembly to compensate for binocular deformation, creating a closed-loop feedback system that maintains image alignment accuracy while using head-worn displays for immersive experience
Solution Approach 2:
The control subsystem dynamically modifies calibration profiles by changing projection parameters such as image position, orientation, and focal length based on detected light ray deviations. This allows the system to adapt to binocular deformation in real-time, maintaining accurate binocular image alignment while preserving the immersive experience of head-worn displays
2Adaptability or versatility
If waveguide apparatuses with projection subassemblies are used, then display functionality is improved, but device complexity increases
Solution Approach 1:
The system merges the projection subassembly, waveguide apparatus, and light sensing assembly into an integrated display unit. The control subsystem coordinates all these components through a unified calibration and control mechanism, reducing operational complexity despite the increased functional capability of the combined system
3Measurement precision
If light sensing assembly is added to detect mismatches, then measurement precision is improved, but device complexity increases
Solution Approach 1:
The light sensing assembly enables the system to self-diagnose and self-correct binocular deformation by detecting light ray mismatches and triggering automatic calibration through the control subsystem. This self-service capability improves measurement precision while the automated nature of the process minimizes the operational complexity burden
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
The system effectively compensates for binocular deformations, ensuring accurate alignment of virtual images, reducing image distortion and physiological strain, and enhancing the user's immersive experience.
Implementation Method 1
a first waveguide apparatus and a second waveguide apparatus
Implementation Method 2
a light sensing assembly configured for detecting a parameter indicative of a mismatch
Data Source
AI summary
A display subsystem for a virtual image generation system used by an end user, comprises first and second waveguide apparatuses, first and second projection subassemblies configured for introducing first and second light beams respectively into the first and second waveguide apparatuses, such that at least a first light ray and at least a second light ray respectively exit the first and second waveguide apparatuses to display first and second monocular images as a binocular image to the end user, and a light sensing assembly configured for detecting at least one parameter indicative of a mismatch between the displayed first and second monocular images as the binocular image.