3D Aerial Image Display Using Retroreflection and Tapered Object
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Solution Overview
Problem
Current aerial imaging technologies using retroreflection primarily produce two-dimensional images, and attempts to achieve three-dimensional visualization are limited by resolution issues and the inability to detect a line of sight accurately, restricting the number of viewers who can see a three-dimensional image simultaneously.
Innovation Solution
A display device incorporating a light source, a three-dimensional object with optical characteristics for light guiding or diffusion, and a retroreflective member that forms an aerial image by reflecting light, where the three-dimensional object has tapered side surfaces and edge processing to enhance light transmission and diffusion, allowing for vivid stereoscopic visualization without the need for special glasses.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Shape
If a display is used as a light source to project images into the air, then an aerial image can be displayed, but the image is visualized as a two-dimensional image without three-dimensional effect
Solution Approach 1:
The patent transitions from two-dimensional planar images to three-dimensional visualization by introducing a three-dimensional object with specific geometric features (tapered side surfaces, upper surface, and lower surface). This dimensional change allows the aerial image to exhibit true three-dimensional properties including depth perception and viewing angle dependence, resolving the contradiction between achieving 3D visualization and maintaining image quality.
2Adaptability or versatility
If optical illusion technology is used to shift planar images according to detected line of sight, then three-dimensional visualization can be achieved, but the line of sight detection is limited to one person and may cause discomfort due to lag
Solution Approach 1:
The patent removes the complex line of sight detection system and replaces it with a passive optical structure. The three-dimensional object with tapered side surfaces inherently provides different viewing experiences for multiple observers without requiring active detection or control systems. This extraction of the detection system eliminates the limitation to single-user viewing while reducing device complexity.
Solution Approach 2:
The three-dimensional object structure itself serves the function of providing differentiated visual experiences to multiple viewers. The tapered side surfaces automatically create angle-dependent light transmission and diffusion, eliminating the need for external control systems to manage multiple viewers. The structure is self-sufficient in adapting to different viewing positions.
3Illumination intensity
If a three-dimensional object with light guiding or diffusion characteristics is used, then vivid stereoscopic aerial images can be displayed, but the structure becomes more complex
Solution Approach 1:
The patent applies different optical characteristics to different parts of the three-dimensional object. The tapered side surfaces have specific light diffusion properties, while the upper and lower surfaces have different characteristics. This local differentiation of optical properties enables vivid stereoscopic imaging without requiring the entire structure to be complex, as each region is optimized for its specific function.
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 enables the display of vivid stereoscopic aerial images that change brightness based on the viewer's position, providing a more immersive three-dimensional experience for multiple users without compromising image resolution.
Implementation Method 1
a display device capable of displaying an aerial image using retroreflection... The retroreflective member is configured to reflect light of the three-dimensional object
Implementation Method 2
The three-dimensional object has at least one optical characteristic of light guiding or light diffusion
Implementation Method 3
The three-dimensional object has at least one optical characteristic of light guiding or light diffusion
Data Source
AI summary
A display device is capable of displaying an aerial image using retroreflection. The display device includes a light source, a three-dimensional object having at least one optical characteristic of light guiding or light diffusion and being illuminated by the light source, a retroreflective member configured to reflect light of the three-dimensional object, and an optical member that transmits the light reflected by the retroreflective member to form an aerial image of the three-dimensional object. The three-dimensional object includes at least an upper surface and one or more side surfaces connected to the upper surface, where at least part of the one or more side surfaces is tapered.