3D Display Resolution via Directional Backlight Segmentation
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Solution Overview
Problem
Conventional three-dimensional image display apparatuses suffer from low image resolution due to the high production costs of small micro lenses in fly-eye lens arrays, limiting their effectiveness in displaying high-quality three-dimensional images.
Innovation Solution
The proposed solution involves a three-dimensional image display apparatus with a backlight source comprising directional light sources and a fly-eye lens array, where the element image array is positioned between the backlight source and the fly-eye lens array, with incident angles of lights from directional light sources varying, and a scattering light source array with a collimating lens to enhance image resolution by adjusting the display information of pixel cells and switching directional light sources.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the micro lens size is reduced to increase image resolution, then the image resolution of the three-dimensional image display apparatus is improved, but the production cost increases significantly
Solution Approach 1:
The backlight source is segmented into multiple directional light sources arranged in an array, with each light source corresponding to specific pixel cells. This segmentation allows the system to achieve high image resolution through multiple discrete light paths rather than requiring uniformly small micro lenses across the entire fly-eye lens array, thereby reducing production costs while maintaining high resolution.
2Manufacturing precision
If conventional backlight sources are used without directional control, then the device structure remains simple, but the image resolution is limited
Solution Approach 1:
The system employs switching control of directional light sources based on display content requirements. Different directional light sources are activated selectively to illuminate different pixel cells, creating dynamic light paths that enhance image resolution. This dynamic control mechanism allows the system to adapt to different display scenarios while maintaining structural simplicity through shared optical components.
Solution Approach 2:
The fly-eye lens array serves multiple functions: it acts as both a light distribution element and an image reconstruction element. The same array of micro lenses is used to both guide light from directional sources and reconstruct the three-dimensional scene, eliminating the need for separate optical components and maintaining device simplicity while achieving high resolution.
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 configuration significantly increases the image resolution of the three-dimensional image display apparatus, potentially making it N times higher than conventional systems, by optimizing the use of directional light sources and pixel cell display information, effectively addressing the low resolution issue.
Implementation Method 1
a collimating lens for transforming scattered lights from the scattering light sources into collimated lights
Implementation Method 2
a fly-eye lens array including a plurality of micro lenses for processing the three-dimensional scene information to reconstruct a three-dimensional scene
Implementation Method 3
each of the pixel cells of the element image array corresponds to one of the micro lenses of the fly-eye lens array
Data Source
AI summary
A three-dimensional image display apparatus is provided. The three-dimensional image display apparatus includes an element image array, a backlight source, and a fly-eye lens array. The element image array is disposed between the backlight source and the fly-eye lens array. Incident angles of lights emitted from different directional light sources with respect to the element image array are different. The image resolution of the three-dimensional image display apparatus is raised by using the backlight source having the multiple directional light sources.