Air Floating Video Display System with Light Control Sheet
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Solution Overview
Problem
Existing air floating video information display systems face challenges in preventing failures due to external light entering the retroreflector and in optimizing the light source design for high visual recognition and contrast.
Innovation Solution
The system incorporates a display panel, a light source apparatus, a retroreflector, and a video light control sheet. The video light control sheet is placed between the retroreflector and the display panel, adjusting the emission direction and divergence angle of the video light to enhance image quality and reduce ghost images.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a retroreflector is used to form an air floating video, then the video can be displayed in space, but external light enters the retroreflector causing image quality degradation
Solution Approach 1:
A light control sheet is introduced as an intermediary component between the retroreflector and the display panel. This sheet selectively controls light transmission, allowing video light to pass through while blocking external light from entering the retroreflector, thus resolving the contradiction between achieving air floating video display and preventing external light interference
2Illumination intensity
If the light source is made brighter to improve visual recognition, then image quality improves, but ghost images increase
Solution Approach 1:
The light control sheet applies different optical properties to different regions and directions. It allows video light to pass through with high transmission in the forward direction while blocking external light from other directions. This directional selectivity enables bright video display without generating ghost images from external light sources
3Area of stationary object
If the divergence angle of video light is increased to improve coverage, then the video area expands, but image quality and contrast decrease
Solution Approach 1:
The light control sheet dynamically adjusts the divergence angle parameter of the video light. By optimizing the angular distribution of transmitted light, it achieves a balance between video display area and image quality, allowing sufficient coverage while maintaining high contrast and visual recognition
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 configuration ensures that the image quality of the air floating video is maintained even under external light conditions, providing high visual recognition and contrast while minimizing ghost images.
Implementation Method 1
a retroreflector configured to reflect video light emitted from the display panel and to cause the reflected light to aerially display an air floating video of a real image
Implementation Method 2
a video light control sheet configured to convert an optical path of the video light, and the video light control sheet is arranged between the retroreflector and the display panel and adjusts an emission direction and a divergence angle of a video light flux emitted from the display panel
Data Source
AI summary
A video is preferably displayed on outside of a space. The present invention contributes to “the third goal: Good Health and Well-being (for all people)”, “the ninth goal: Industry, Innovation and Infrastructure” and “the eleventh goal: Sustainable Cities and Communities” of the sustainable development goals. An air floating video display system includes: a display panel configured to display a video; a light source apparatus for the display panel; a retroreflector configured to reflect video light emitted from the display panel and to cause the reflected light to aerially display an air floating video of a real image; and a video light control sheet configured to convert an optical path of the video light. The video light control sheet is arranged between the retroreflector and the display panel to adjust an emission direction and a divergence angle of a video light flux emitted from the display panel.