Auto-stereoscopic Display with Eye Tracking for Head Movement
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Solution Overview
Problem
Existing display devices struggle to provide a natural three-dimensional (3D) visual effect without glasses, as they are limited by predetermined viewing angles, leading to poor quality and discomfort when viewers move their heads.
Innovation Solution
A display device comprising a display module, an optical modulator, and an eye tracking module, where the controller generates image data based on the viewer's eye positions to adjust the light emission direction, ensuring consistent 3D visual effect regardless of head movement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If predetermined viewing angles are used in light field displays, then the structure is simple and manufacturing is easier, but the viewing quality deteriorates when viewers move their heads or change positions
Solution Approach 1:
The patent implements dynamic adjustment of viewing angles by using eye tracking modules to monitor viewer position and dynamically recalculating the optimal viewing angles through the controller. This allows the display to adapt to viewer movement rather than relying on fixed predetermined angles, resolving the contradiction between simple structure and high viewing quality.
Solution Approach 2:
The system incorporates eye tracking modules that provide real-time feedback on viewer eye positions to the controller. This feedback loop enables the system to automatically adjust the light field parameters to maintain optimal viewing quality regardless of viewer position, eliminating the need for complex predetermined angle configurations.
2Adaptability or versatility
If multiple predetermined viewing angles are provided, then more viewers can watch simultaneously, but the system complexity and difficulty of detecting and measuring viewer positions increases
Solution Approach 1:
The system uses eye tracking modules to automatically detect and track viewer eye positions without requiring manual input or complex measurement systems. The controller then self-adjusts the light field parameters based on this detected information, enabling the system to serve multiple viewers simultaneously while keeping the detection and control mechanisms relatively simple.
3Reliability
If fixed viewing positions are assumed, then the display structure remains simple, but the reliability of 3D visual effect deteriorates when viewers do not watch from the correct position
Solution Approach 1:
The patent employs dynamic adjustment of light field parameters based on real-time eye tracking data. The controller continuously modifies the viewing angles and light distribution to maintain reliable 3D visual effects regardless of viewer position, eliminating the need for fixed viewing position assumptions while keeping the overall structure relatively simple.
Solution Approach 2:
The system changes key optical parameters such as viewing angles and light field distribution dynamically based on detected eye positions. This parameter adaptation ensures consistent 3D visual effect quality across different viewer positions without requiring a fundamentally complex display structure.
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 provides a high-quality, auto-stereoscopic visual effect that adapts to the viewer's position and direction, reducing discomfort and improving visual quality by dynamically adjusting the viewing angles.
Implementation Method 1
The optical modulator is disposed on the display module and modulates the light emitted from the display module to corresponding directions
Data Source
AI summary
A display device includes a display, an optical modulator, an eye tracking module, and a controller. The display module includes a plurality of pixels. The optical modulator is disposed on the display module and modulates the light emitted from the display module to corresponding directions. The eye tracking module tracks the positions of a viewer's eyes. The controller defines an eye-to-eye line passing through the positions of the viewer's eyes, and generates image data of the plurality of pixels according to a plurality of viewing positions on the eye-to-eye line.