Polychrome Pixel Panels for XR Projection
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Solution Overview
Problem
Extended reality projection systems face challenges in minimizing pixel pitch while maintaining color uniformity, particularly due to the use of multi-aperture waveguides and separate polychrome pixel panels.
Innovation Solution
The implementation of polychrome pixel panels with coordinated pixel arrangements, where each pixel position includes superimposed red, green, and blue pixels, helps to reduce pixel pitch and balance color non-uniformity by coordinating the pixel arrangements across different panels.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If separate polychrome pixel panels are used with multi-aperture waveguides, then pixel pitch can be reduced and display size/weight decreased, but color non-uniformity increases
Solution Approach 1:
The pixel array is segmented into multiple separate polychrome pixel panels (e.g., first panel with red pixels, second panel with green pixels, third panel with blue pixels). Each panel is coupled to a different aperture of the multi-aperture waveguide, allowing independent optimization of each panel while collectively achieving reduced pixel pitch and improved color uniformity through coordinated arrangement.
2Measurement precision
If pixels are packed closely to minimize pixel pitch, then display resolution and field of view improve, but color balance becomes difficult to maintain
Solution Approach 1:
Different regions of the pixel array have locally optimized color compositions. Each pixel position is defined by coordinates (i, j) and has a specific color composition from the superposition of multiple panels. The coordinated pixel arrangements ensure that at each pixel position, the superimposed pixels from different panels contribute appropriate color components, maintaining color balance even when pixels are closely packed.
3Weight of stationary object
If separate pixel panels are used to reduce pixel pitch, then device weight decreases, but color non-uniformity across the display increases
Solution Approach 1:
Multiple separate polychrome pixel panels are merged through optical superposition via the multi-aperture waveguide. The coordinated pixel arrangements ensure that pixels from different panels (red, green, blue) are positioned to superimpose at each pixel position, combining their contributions to produce uniform color output across the entire display while maintaining reduced pixel pitch.
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 approach effectively decreases the effective pixel pitch, improving system characteristics such as display size, weight, resolution, and field of view, while also enhancing color balance and reducing perceived color non-uniformity.
Implementation Method 1
A waveguide that guides light from separate pixel panels to a lens in front of a viewer's eye may include three separate apertures to input the light from the separate pixel panels.
Data Source
AI summary
Illustrative systems and methods for performing extended reality projection using polychrome pixel panels with coordinated pixel arrangements are described herein. For example, an extended reality projection system may include a head-mounted display and a set of polychrome pixel panels collectively configured to produce a color image for presentation on the head-mounted display. The set of polychrome pixel panels may be configured with a coordinated pixel arrangement in which, for a particular pixel position: 1) a first panel of the set of polychrome pixel panels includes a red pixel, 2) a second panel of the set of polychrome pixel panels includes a green pixel, and 3) a third panel of the set of polychrome pixel panels includes a blue pixel. Corresponding methods and systems are also disclosed.