Aerial Suspension Display Module With Polarized Crosstalk Blocking
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Solution Overview
Problem
Aerial suspension display technologies using negative refractive index plates suffer from picture crosstalk, leading to reduced brightness, contrast, and display effects such as multi-shadow and vertigo due to odd and even reflections of light.
Innovation Solution
Incorporating a light control member, such as a circular or linear polarizer, on the light exit side of the negative refractive index plate to intercept light subjected to odd number reflections, combined with a light adjustment member to manage polarization, thereby reducing crosstalk and improving contrast.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a negative refractive index plate is used as the reflection element for aerial suspension display, then the display can achieve medium-free aerial projection, but picture crosstalk occurs due to odd and even reflections
Solution Approach 1:
The invention segments the reflected light into two distinct groups: odd reflections and even reflections. By introducing a light control member with specific polarization characteristics, the system separates these two reflection types, allowing only even reflections to reach the observer while blocking odd reflections. This segmentation eliminates picture crosstalk while preserving the aerial suspension display capability.
Solution Approach 2:
The light control member acts as an intermediary element between the negative refractive index plate and the observer. This intermediary component selectively transmits or blocks light based on its reflection order, mediating the interaction between the reflected light and the human eye to eliminate harmful crosstalk effects.
2Use of energy by moving object
If all reflected light is allowed to exit the negative refractive index plate, then light utilization is maximized, but contrast is reduced due to crosstalk from odd reflections
Solution Approach 1:
The invention converts the harmful odd reflections into blocked light while allowing beneficial even reflections to pass through. By using polarization characteristics to distinguish between harmful and useful light paths, the system transforms what would be wasted light (odd reflections) into blocked light that improves contrast, while maintaining efficient use of the useful reflected light.
3Reliability
If multiple reflections occur in the negative refractive index plate, then aerial image formation is achieved, but vertigo and multi-shadow effects occur due to odd reflections
Solution Approach 1:
The invention segments the multiple reflection paths into distinct odd and even groups, using polarization properties to identify and separate them. The light control member blocks odd reflections that cause vertigo and multi-shadow effects while allowing even reflections to contribute to proper aerial image formation, thereby eliminating visual discomfort.
Solution Approach 2:
The invention utilizes polarization state changes (analogous to color changes in optical properties) to differentiate between odd and even reflections. By configuring the light control member with specific polarization characteristics, the system identifies and blocks harmful reflection paths based on their polarization state, eliminating vertigo and multi-shadow effects.
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 effectively minimizes crosstalk, enhances picture contrast, and reduces vertigo by selectively intercepting odd reflections, resulting in improved display quality.
Implementation Method 1
a negative refractive index plate arranged on a light exit side of the display panel, the negative refractive index plate being configured to reflect first exit light from the display panel and guide the first exit light to exit from a light exit side of the negative refractive index plate
Implementation Method 2
the negative refractive index plate being configured to reflect first exit light from the display panel
Implementation Method 3
a light control member arranged on the light exit side of the negative refractive index plate and configured to intercept at least part of the second exit light subjected to an odd number of reflections
Data Source
AI summary
A display module includes a display panel, a negative refractive index plate and a light control member. The negative refractive index plate is arranged on a light exit side of the display panel, and configured to reflect first exit light from the display panel and guide the first exit light to exit from a light exit side of the negative refractive index plate as second exit light. The light control member is arranged on the light exit side of the negative refractive index plate and configured to intercept at least part of the second exit light subjected to an odd number of reflections by the negative refractive index plate.