Light Field Near-Eye Display Digital Eye Relief Adjustment
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Solution Overview
Problem
Conventional light field near-eye displays have fixed system parameters, including eye relief, which cannot be adjusted digitally, leading to increased structural complexity and degradation of image quality due to mechanical adjustments.
Innovation Solution
A light field near-eye display device that includes a processor to calculate new ray tracing data based on current eye relief, preset eye relief data, and preset ray tracing data, adjusting image data to generate adjusted image beams emitted through a microlens array for improved image quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If mechanical movement is used to adjust optical variables (such as eye relief) in conventional LFNED, then the eye relief can be adjusted, but the structural complexity increases and image quality degrades
Solution Approach 1:
The patent replaces the mechanical adjustment system with a digital/image processing system. Instead of physically moving optical elements to change eye relief, the system calculates new ray tracing data based on current eye relief parameters and adjusts image data accordingly through software processing. This substitutes mechanical movement with computational methods, eliminating the need for complex mechanical structures while maintaining eye relief adjustment capability.
Solution Approach 2:
The patent changes the approach from physically changing optical parameters through mechanical movement to changing image data parameters through digital processing. By modifying ray tracing data and image data based on eye relief variations, the system achieves eye relief adjustment without physical movement. This parameter transformation approach maintains adaptability while reducing structural complexity.
2Adaptability or versatility
If mechanical movement is used to adjust optical variables (such as eye relief) in conventional LFNED, then the eye relief can be adjusted, but image quality degrades
Solution Approach 1:
The patent replaces mechanical adjustment with digital image processing to maintain image quality. By using ray tracing calculations and image data adjustment rather than physical movement, the system avoids the image quality degradation that occurs with mechanical methods. The computational approach preserves optical precision while enabling eye relief adaptation.
Solution Approach 2:
The patent performs preliminary ray tracing calculations to determine the appropriate image adjustments before displaying the image. By pre-calculating the necessary image data modifications based on eye relief parameters, the system ensures that the correct adjustments are made in advance, maintaining optimal image quality without requiring complex real-time mechanical adjustments.
3Device complexity
If fixed system parameters are used in conventional LFNED, then the system structure is simple, but the system cannot adapt to different user requirements
Solution Approach 1:
The patent introduces dynamic adaptability through software while maintaining simple hardware structure. The system can dynamically calculate and adjust ray tracing data and image data based on varying eye relief parameters and user requirements. This dynamic image processing capability provides adaptability without adding complex mechanical or optical components, achieving versatility through computational flexibility rather than physical 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
The device automatically adjusts image data to match current eye relief, ensuring the light field image is displayed within the focus range of the pupil, providing good image quality without mechanical complexity.
Implementation Method 1
The lens module includes a microlens array and is disposed between the display panel and a pupil. The image beam is incident to the pupil through the lens module and displays a light field image.
Data Source
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AI summary
A light field near-eye display device and a light field near-eye display method are provided. The light field near-eye display device includes a processor, a display panel, and a lens module. The processor calculates new ray tracing data based on a current eye relief, preset eye relief data, and preset ray tracing data, and adjusts preset image data according to the new ray tracing data to generate adjusted image data. The display panel is coupled to the processor and emits an image beam according to the adjusted image data. The lens module includes a microlens array and is disposed between the display panel and a pupil. The image beam is incident to the pupil through the lens module and displays a light field image.