Adjustable Polarization 3D Glasses for Multi-Device Compatibility
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Solution Overview
Problem
Conventional 3D shutter glasses are limited by non-uniform polarization directions of different 3D display devices, leading to increased production costs and user expenses due to the need for multiple glasses to match various devices, and can result in dark 3D images from varying viewing positions and poses.
Innovation Solution
A pair of viewing glasses with adjustable polarization direction using liquid crystal layers and control units that adjust the polarization direction of image beams based on the display device's polarization axis and user's viewing position, allowing compatibility with multiple 3D display devices and maintaining image clarity across different viewing angles.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If shutter glasses are designed with a fixed polarization axis direction to match specific 3D display devices, then the image beam can pass through the polarizer effectively, but the glasses cannot be used with display devices having different polarization directions, increasing production cost and user expense
Solution Approach 1:
The patent applies a liquid crystal layer that can dynamically change its polarization axis direction in response to control signals. This dynamic adjustment capability allows the shutter glasses to adapt to different 3D display devices with varying polarization directions, eliminating the need for multiple pairs of glasses while maintaining effective image beam transmission through the polarizer.
Solution Approach 2:
The invention changes the polarization axis direction parameter of the liquid crystal layer based on the polarization direction of the image beam from different display devices. By adjusting this parameter dynamically, the system achieves compatibility with multiple display devices without increasing production cost or requiring users to purchase multiple pairs of glasses.
2Ease of operation
If the polarization direction of the image beam is not adjusted according to viewing position and pose, then the 3D display system is simpler, but users experience dark 3D images when viewing from different positions or poses
Solution Approach 1:
The patent incorporates sensors that detect the user's viewing position and pose, providing feedback to the control unit. The control unit then adjusts the liquid crystal layer's polarization axis direction accordingly, ensuring that the polarization direction remains optimal for image transmission regardless of the user's viewing position or pose, thereby preventing dark 3D images.
Solution Approach 2:
The system automatically adjusts the polarization direction based on detected viewing conditions without requiring manual intervention from the user. The control unit receives sensor data and autonomously modifies the liquid crystal layer's orientation to maintain optimal image brightness across different viewing scenarios.
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
Enables the use of 3D glasses with multiple 3D display devices of varying polarization directions, reducing production costs and user expenses while preventing dark 3D images by dynamically adjusting the polarization direction according to the user's position and device orientation.
Implementation Method 1
The liquid crystal layer is disposed between the front polarizer and the back polarizer, and changes the polarization direction of the image beam in response to an applied operating voltage
Implementation Method 2
The polarization axis of the front polarizer is parallel to a polarization direction of an image beam emitted by the 3D display device, and the polarization axes of the front polarizer and the back polarizer are orthogonal to one another
Data Source
AI summary
A pair of viewing glasses, a three-dimensional (3D) display system and an image beam adjustment method are provided. The adjustment method includes determining an adjustment angle according to an image beam emitted by a display screen; detecting a relative spatial orientation of the viewing glasses and the display screen; determining a compensation angle according to the relative spatial orientation; and adjusting the polarization direction of the image beam according to at least one of the adjustment angle and the compensation angle, so as to change the polarization direction of the image beam to a target polarization direction parallel or perpendicular to the polarization axis direction of a polarizer of the viewing glasses.