Light Field Display Optics for Wide Viewing Angle and Low Crosstalk
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Solution Overview
Problem
Existing three-dimensional image display technologies face challenges in achieving high luminance and wide viewing angles, with lens-based methods offering higher luminance but narrower viewing angles, and barrier-based methods providing wider viewing angles but lower luminance.
Innovation Solution
A light field display apparatus incorporating a display panel with a first and second lens array, and optionally a third lens array, along with a barrier that adjusts its aperture ratio based on three-dimensional image analysis to optimize luminance and reduce crosstalk, ensuring a wide viewing angle and high image quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If a lens-based method is used to display three-dimensional images, then luminance is improved, but viewing angle deteriorates
Solution Approach 1:
The patent divides the single lens array into multiple lens arrays (first lens array and second lens array) positioned at different locations. Each lens array handles specific light paths and viewing angles, allowing the system to achieve both high luminance through proper lens focusing and wide viewing angle through the distributed arrangement of multiple lens arrays.
Solution Approach 2:
The patent introduces a spatial dimension by positioning lens arrays at different locations and orientations. The first lens array and second lens array are arranged in a three-dimensional configuration, enabling the system to capture and display images from multiple viewing angles simultaneously while maintaining high luminance through optimized light path management.
2Adaptability or versatility
If a barrier-based method is used to display three-dimensional images, then viewing angle is improved, but luminance deteriorates
Solution Approach 1:
The patent introduces a barrier as an intermediary element positioned between the display panel and the lens arrays. The barrier with its aperture structure selectively transmits light from specific lens arrays to specific viewing angles, enabling wide viewing angle coverage while maintaining high luminance by preventing light from reaching incorrect angles and reducing crosstalk between different image channels.
3Illumination intensity
If aperture ratio of the barrier is increased to improve luminance, then crosstalk increases
Solution Approach 1:
The patent employs a barrier with non-uniform aperture distribution, where different regions of the barrier have different aperture ratios. Areas requiring higher luminance have larger apertures, while areas prone to crosstalk have smaller apertures or are completely blocked. This local differentiation allows the system to optimize luminance in critical regions while preventing crosstalk in adjacent regions.
Solution Approach 2:
The patent dynamically adjusts the aperture ratio parameter of the barrier based on the specific display requirements and viewing conditions. By changing the aperture ratio from a fixed value to a variable parameter that can be optimized for different scenarios, the system achieves the optimal balance between luminance and crosstalk reduction for each particular application.
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 enables a high-luminance, wide-viewing-angle three-dimensional image display with reduced crosstalk, allowing users to enjoy high-quality images from a broad angle range.
Implementation Method 1
a display panel that emits light to form an image
Implementation Method 2
A first lens array may be provided in the display panel and may have a structure in which a plurality of first lenses are arranged
Implementation Method 3
A barrier may have an aperture that transmits the light
Data Source
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AI summary
Disclosed is a light field display apparatus including a display panel configured to emit light that forms an image, a first lens array in which a plurality of first lenses are arranged, a second lens array in which a plurality of second lenses are arranged, and a barrier having an aperture that transmits the light.