Polarizing Rotation Device for Uniform 3D Projection
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In projection devices, the polarization direction and intensity of laser beams are disrupted by optical elements, leading to nonuniform brightness and color in 3D display images, especially in polarized stereoscopic mode.
Innovation Solution
A polarizing rotation device is introduced, featuring a rotation shaft and a polarizing element driven by a driving element, which rotates to change the polarization state of excitation beams, ensuring uniform polarization and brightness across the image.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If optical elements are used inside the projection device, then the excitation beam can be processed and converted, but the polarization polarity of the excitation beam is destroyed, causing nonuniform brightness and color in 3D display images
Solution Approach 1:
The patent introduces a dynamic polarization control mechanism where a polarization state adjustment unit continuously adjusts the polarization state of the excitation beam in real-time to compensate for polarization changes caused by optical elements. This dynamic adjustment ensures uniform brightness and color in 3D display images while maintaining the functionality of optical elements.
Solution Approach 2:
The patent implements a feedback control system where a detection unit monitors the polarization state of the excitation beam, and this information is fed back to the polarization state adjustment unit. The adjustment unit then modifies the polarization state accordingly to maintain consistent polarization properties throughout the optical path, resolving the contradiction between using optical elements and maintaining brightness uniformity.
2Adaptability or versatility
If optical elements are used inside the projection device, then the excitation beam can be processed and converted, but the polarization direction and intensity become divergent, causing nonuniform color in display images
Solution Approach 1:
The polarization state adjustment unit dynamically adjusts not only the polarization direction but also the polarization intensity to compensate for divergent changes caused by optical elements. This ensures that both polarization direction and intensity remain consistent, achieving uniform color in display images while maintaining full light processing capability.
Solution Approach 2:
The patent changes the parameters of the excitation beam's polarization state (including polarization angle and intensity) in real-time to counteract the effects of optical elements. By adjusting these parameters dynamically, the system maintains consistent polarization properties and achieves uniform color output.
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
This solution ensures that 3D display images have uniform color and brightness, enhancing the viewing experience through polarized stereoscopic glasses by maintaining consistent polarization and intensity.
Implementation Method 1
the polarizing element is disposed on a transmission path of at least one excitation beam, where the driving element is configured to drive the polarizing element to rotate sequentially, and when the polarizing element is rotated, the at least one excitation beam penetrates through the polarizing element, and the at least one excitation beam penetrating through the polarizing element has different polarization states at different time
Data Source
AI summary
A polarizing rotation device including a rotation shaft, a driving element and a polarizing element is provided. The driving element is configured to drive the rotation shaft to rotate. The polarizing element is connected to the rotation shaft and is disposed on a transmission path of at least one beam, where the driving element is configured to drive the polarizing element to rotate sequentially while taking the rotation shaft as a rotation central axis, and when the polarizing element is rotated, the at least one beam penetrates through the polarizing element, and the at least one beam penetrating through the polarizing element has different polarization states at different time. Therefore, when a projection device is in a polarized stereoscopic mode, a color or brightness of a display image is uniform, and a user observes a 3D display image with good uniformity.