Pixel Alignment in Binocular XR Displays via Optical Window Refraction
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Binocular display systems in Extended Reality (XR) devices face challenges in maintaining precise pixel alignment between the left and right eyes, leading to discomfort, eye strain, and a loss of depth perception.
Innovation Solution
The introduction of at least one window in the optical path of the image sources for the left and right eyes, which can be adjusted to align the pixels by refracting light and shifting its direction, thereby correcting alignment errors.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If no window is introduced in the optical path, then the device structure remains simple, but pixel alignment between left and right eyes deteriorates
Solution Approach 1:
A window is introduced as an intermediary element in the optical path between the image source and the lens. This window acts as a mediator to adjust and align the pixels from left and right image sources, enabling precise pixel alignment without requiring complex mechanical adjustment mechanisms.
Solution Approach 2:
The optical path is segmented by introducing a separate window element that can be independently adjusted. This allows the alignment function to be separated from the main optical components, enabling fine-tuned pixel alignment while keeping the overall device structure relatively simple.
2Manufacturing precision
If a window is introduced to align pixels, then pixel alignment precision improves, but device complexity increases
Solution Approach 1:
The window serves multiple functions: it acts as both an optical element in the light path and an alignment adjustment mechanism. By making the window multi-functional, the patent avoids adding separate alignment mechanisms, thereby limiting the increase in device complexity while achieving precise pixel alignment.
3Measurement precision
If windows are used to correct alignment errors, then depth perception accuracy improves, but manufacturing complexity increases
Solution Approach 1:
The window is designed with adjustable positioning capability, allowing it to be dynamically configured to correct different alignment errors. This dynamic adjustability enables the system to achieve precise depth perception accuracy while maintaining relative manufacturing simplicity through a single adjustable component rather than multiple fixed components.
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
This solution effectively aligns pixels between the left and right eyes, enhancing the immersive three-dimensional experience by reducing visual discomfort and eye strain, and ensuring accurate depth perception.
Implementation Method 1
The introduction of at least one window in the optical path of the image sources for the left and right eyes, which can be adjusted to align the pixels by refracting light and shifting its direction
Data Source
AI summary
According to an aspect, a system includes a first image source for a left eye and a second image source for a right eye. The system further includes at least one window in a first optical path for the first image source or a second optical path for the second image source, the at least one window configured to align first pixels from the first image source with second pixels from the second image source.