Microprism Viewing Angle Regulator for Crosstalk-Free 3D Displays
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Solution Overview
Problem
Current naked-eye 3D display technologies face issues such as vertigo, image crosstalk/ghosting, decreased resolution, and low light utilization due to the use of optical elements with periodic microstructures, which hinder their adoption in consumer electronics.
Innovation Solution
A naked-eye 3D display device utilizing an array of microprism blocks that control the outgoing angle of light by setting specific angle combinations, allowing lights from the same group to converge into the same viewpoint and lights from different groups to converge into different viewpoints, enhancing 3D display effects at various angles.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If nano-grating pixels are used for wavefront modulation, then 3D display capability is achieved, but manufacturing precision and alignment difficulty increase significantly
Solution Approach 1:
The patent divides the continuous nano-grating structure into discrete microprism blocks arranged in groups. Each microprism block is an independent optical element with specific geometric parameters, allowing separate fabrication and assembly. This segmentation eliminates the alignment precision requirements between adjacent pixels while maintaining the wavefront modulation capability for 3D display.
Solution Approach 2:
The patent replaces the mechanical alignment system (precise positioning of nano-grating pixels) with an optical system based on microprism geometry. The light directing function is achieved through the geometric shape and refractive properties of microprisms rather than through precise mechanical positioning, significantly reducing manufacturing complexity.
2Adaptability or versatility
If nano-grating pixels are used for light modulation, then 3D display is achieved, but light utilization efficiency decreases due to limited diffraction efficiency
Solution Approach 1:
The patent changes the optical parameters by using microprism blocks with specific geometric configurations (apex angles, dimensions, spacing) instead of nano-grating structures. This parameter change enables more efficient light redirection and convergence, improving light utilization efficiency while maintaining 3D display capability.
3Adaptability or versatility
If parallax barrier or micro-lenticular lens array is used, then 3D display is achieved, but image crosstalk occurs causing visual fatigue
Solution Approach 1:
The patent applies local quality by assigning different angle combinations to different groups of microprism blocks. Each group is optimized for specific viewing angles, creating distinct convergence viewpoints. This localized optimization ensures that light from each display unit converges precisely at its designated viewpoint, eliminating image crosstalk between different viewing zones.
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 achieves crosstalk-free, high-clarity 3D images with improved light utilization by regulating light direction through microprism blocks, providing a fatigue-free 3D viewing experience.
Implementation Method 1
a light from the display component enters the microprism block through the first surface of the microprism block, and then is emitted from the microprism block through the second surface of the microprism block, the second surface of the microprism block forming a first angle with the first surface in a first direction
Data Source
AI summary
A naked-eye three-dimensional (3D) display device is provided. The naked-eye 3D display device comprises: a display component, comprising an array of display units; and a viewing angle regulator, comprising an array of microprism blocks. The microprism blocks are divided into a plurality of groups, and an angle combination of a first angle and a second angle of each of the microprism blocks is preset so that outgoing lights of the same group of microprism blocks converge into the same viewpoint, and outgoing lights of different groups of microprism blocks converge into different viewpoints. Hence, a plurality of different viewpoints are formed by setting angles of inclined surfaces of the microprism blocks, thereby seeing different 3D display effects from different viewing angles.