Eye-Tracked 3D Display Light Control for Crosstalk Reduction
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Solution Overview
Problem
Conventional naked-eye three-dimensional displays suffer from light misalignment issues causing image crosstalk and blurring due to imperfect pixel light sources, resulting in double images.
Innovation Solution
A three-dimensional display device equipped with an eye tracking device, processor, and display that calculates and adjusts light intensity based on eye positions to reduce image crosstalk by distributing light beams through light splitting units and performing light intensity comparison and post-processing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a splitting device is used to ensure restricted output angles for multiple pixels in naked-eye three-dimensional displays, then the three-dimensional image can be displayed, but light misalignment occurs causing image crosstalk and blurring
Solution Approach 1:
The patent applies local quality by making different pixels have different light emission characteristics. Specifically, pixels are assigned different light intensities and emission angles based on their position and the desired viewpoint, allowing each pixel to contribute differently to the three-dimensional image without causing crosstalk. This resolves the contradiction by enabling reliable three-dimensional display while avoiding light misalignment through localized customization of pixel properties.
2Manufacturing precision
If pixel points are not perfect point light sources, then light misalignment occurs, but requiring perfect point light sources is not practical
Solution Approach 1:
The patent employs parameter changes by adjusting the light emission parameters (intensity, angle, timing) of pixels rather than requiring perfect point light source geometry. By dynamically modifying these parameters based on eye tracking data and viewpoint calculations, the system achieves precise light control using conventional pixel structures, thus resolving the contradiction between light source precision and manufacturing ease.
3Reliability
If light intensity is not adjusted at different viewpoints, then image crosstalk occurs, but adjusting light intensity requires complex processing
Solution Approach 1:
The patent implements feedback by using eye tracking devices to continuously monitor viewer position and dynamically adjusting pixel light emission parameters accordingly. The system calculates the optimal light intensity and angle for each pixel based on the tracked eye positions and desired viewpoints, creating a closed-loop control system that eliminates image crosstalk while managing complexity through intelligent algorithms rather than hardware 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 effectively reduces image crosstalk by adjusting light intensity at specific viewpoints, improving the clarity of three-dimensional images.
Implementation Method 1
The plurality of light splitting units are configured to distribute the plurality of beams of light emitted by the plurality of light emitting units
Data Source
AI summary
Provided are a three-dimensional display device and a display method. An eye tracking device of the three-dimensional display device tracks a left eye position and a right eye position. A processor generates a plurality of views. A plurality of light splitting units of a display of the three-dimensional display device distribute a plurality of beams of light emitted by a plurality of light emitting units. The processor calculates opening angles and light paths of the plurality of beams of light emitted by the plurality of light emitting units passing through the plurality of light splitting units to generate viewpoints through which the plurality of beams of light pass. The processor performs a light intensity comparison and post-processing on views corresponding to the at least one of the plurality of left eye viewpoints and the at least one of the plurality of right eye viewpoints.