Diagonal Chip Boundary Scanning Display for Uniform Illumination
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Solution Overview
Problem
Conventional near-eye displays in VR and AR systems face challenges in achieving uniform illumination and high resolution due to limitations in light source arrangement and manufacturing constraints, leading to inefficiencies in light distribution and image quality.
Innovation Solution
A scanning architecture with a light assembly comprising multiple chips and an array of light sources arranged in rows and columns, where the boundary between chips extends diagonally, and a mirror rotates to reflect light, ensuring uniform illumination and super resolution by coordinating light emission and mirror rotation to create an output light pattern.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If conventional light source arrangement is used in near-eye displays, then manufacturing is easier, but illumination uniformity deteriorates
Solution Approach 1:
The patent applies asymmetry by configuring the boundary between chips to extend diagonally across rows and columns rather than following a straight vertical or horizontal line. This diagonal boundary creates an asymmetric light source arrangement where the first row has no light source in certain columns while the second row does, compensating for manufacturing variations and achieving more uniform illumination across the display output.
2Device complexity
If conventional light source arrangement is used, then device complexity is lower, but resolution deteriorates
Solution Approach 1:
The patent segments the light source array into multiple chips arranged in rows and columns, with each chip containing a subarray of light sources. This segmentation allows for finer control and positioning of individual light sources, enabling super resolution by precisely controlling which light sources are active in each column based on the diagonal boundary configuration.
3Use of energy by stationary object
If simple light assembly is used, then power consumption is lower, but illumination uniformity deteriorates
Solution Approach 1:
The patent employs periodic action through the scanning mechanism that periodically activates different rows of light sources. The controller coordinates mirror rotation with periodic light emission from specific rows, allowing the system to achieve uniform illumination through time-multiplexed scanning rather than requiring all light sources to be active simultaneously, thus reducing overall power consumption while maintaining illumination uniformity.
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 solution achieves improved uniformity and super resolution in the output light pattern, mitigating manufacturing limitations and enhancing image quality by ensuring consistent brightness and increased power efficiency.
Implementation Method 1
a mirror configured to rotate about an axis to reflect light emitted by the array of light sources toward an output
Data Source
AI summary
A light assembly can have an array of light sources forming rows and columns, where the array comprises a plurality of chips, and each chip comprises a subarray of light sources forming the rows and columns. A boundary between chips in the array can be configured to extend diagonally across rows and columns of the array such that, for each column across which the boundary extends, the first row of the plurality rows may not have a light source disposed in the respective column, but a second row of the plurality of rows has a light source disposed in the respective column.