Collimated LED Light Field Display Angular Resolution
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Solution Overview
Problem
Current display technologies are unable to capture and utilize all the angular information captured by light field cameras, limiting the ability to display images with high angular resolution.
Innovation Solution
A light field display comprising pixels with multiple micro-lenses and collimated LEDs positioned beneath each micro-lens, arranged in a configuration such as a triangular or stepped diamond pattern to maximize angular resolution, allowing for the generation of RGB light and improved perceived resolution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If current display technologies are used, then device complexity is reduced, but angular resolution and ability to capture/display angular information are insufficient
Solution Approach 1:
The display is segmented into multiple pixels, with each pixel containing multiple micro-lenses (e.g., 9 micro-lenses arranged in a 3x3 pattern). This segmentation allows each micro-lens to capture light from different angular directions, collectively providing high angular resolution across the entire display while maintaining a manageable overall structure through modular pixel design.
Solution Approach 2:
The patent adds a spatial dimension to the display structure by positioning micro-lenses at different locations within each pixel and using collimated LEDs with specific angular orientations. This multi-dimensional arrangement of light-emitting elements and micro-lenses enables the capture and display of angular information in multiple directions simultaneously, achieving high angular resolution without simply increasing the number of pixels in a single plane.
2Measurement precision
If a dense configuration of LEDs and micro-lenses is used, then angular resolution and image clarity are improved, but manufacturing precision requirements increase
Solution Approach 1:
The collimated LEDs are pre-configured with specific angular orientations and positioning relative to the micro-lenses during the manufacturing process. The micro-lenses are designed with predetermined focal points and angular characteristics that match the LED arrangements. This preliminary configuration ensures that when the display is assembled, the angular alignment between LEDs and micro-lenses is already optimized, reducing the need for post-assembly adjustments and simplifying the manufacturing process while maintaining high angular resolution.
3Loss of information
If multiple micro-lenses and collimated LEDs are positioned beneath each micro-lens, then angular information capture is enhanced, but device complexity increases
Solution Approach 1:
Multiple micro-lenses and collimated LEDs are merged into a single integrated pixel structure. Each pixel functions as a unified unit that simultaneously captures and processes angular information from multiple directions. The micro-lenses are positioned in specific patterns (e.g., 3x3 grid) with collimated LEDs beneath them, creating a compact merged structure that maximizes angular information capture within each pixel while avoiding the need for separate complex assemblies for each light-emitting element.
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 enhances the effective resolution of light field displays by utilizing a dense configuration of LEDs and micro-lenses, enabling the capture and display of detailed angular information, thereby improving the viewer's perception of depth and image clarity.
Implementation Method 1
A light field display comprises a plurality of pixels, each pixel of the plurality of pixels comprising: a plurality of micro-lenses; and a plurality of collimated light emitting diodes (LEDs) positioned beneath each micro-lens
Data Source
AI summary
The present disclosure generally relates to light field displays and methods of displaying images with light field arrays. In one example, the present disclosure relates to pixel arrangements for use in light field displays. Each pixel includes a plurality of LEDs, such as micro LEDs, positioned adjacent respective micro-lenses of each pixel.