Transparent Multi-View Mask for 3D Display Shadowing
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current 3D display systems using Pepper's Ghost techniques struggle to maintain accurate silhouette and shadowing when viewed from multiple angles or under varying light sources, resulting in a lack of dynamic and immersive experiences without the need for headgear or glasses.
Innovation Solution
A transparent multi-view mask assembly utilizing a non-inverting relay lens assembly and programmable mask display device, such as a liquid crystal display (LCD) panel, to concurrently display multiple masks viewable from different angles, allowing for correct occlusion and shadowing across various viewpoints and light directions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Shape
If a traditional Pepper's Ghost illusion uses a partially reflecting pane of glass to overlay a physical object's reflection onto a real world scene, then the reflected physical object appears three dimensional and occupies space in the real world scene, but the reflected physical object appears translucent and ghostly and does not cast a shadow
Solution Approach 1:
The patent employs a dynamically controllable liquid crystal display mask that can transition between transparent and opaque states, allowing the system to adapt the appearance of displayed objects in real-time. This dynamic control enables the mask to switch between showing translucent reflections and opaque silhouettes with shadows, resolving the contradiction between maintaining 3D appearance and achieving reliable opacity/shadow casting.
Solution Approach 2:
The liquid crystal display mask changes its optical parameters (transparency/opacity) based on control signals. By adjusting the transparency parameter of the mask at different locations and times, the system can create regions that appear opaque to cast shadows while maintaining overall 3D visual effects, thus improving shadow casting reliability without sacrificing the 3D appearance.
2Ease of operation
If a 2D display is used to create a 3D display, then the display is more dynamic and controllable, but the silhouette and shadowing are only correct for one viewpoint and the display loses correctness when the viewer moves
Solution Approach 1:
The liquid crystal display mask is divided into multiple independently controllable regions or zones. Each region can be controlled to display different mask patterns appropriate for different viewing angles. This segmentation allows the system to maintain correct silhouettes and shadowing for multiple viewpoints simultaneously while retaining the dynamic control benefits of 2D display technology.
Solution Approach 2:
The mask system dynamically adjusts its display content based on the viewer's position. By continuously or periodically updating the mask patterns in different regions according to detected or predicted viewing angles, the system maintains viewpoint correctness across multiple positions while preserving the ease of dynamic control inherent in 2D displays.
3Adaptability or versatility
If a transparent multi-view mask assembly is used to display multiple masks viewable from different angles, then correct occlusion and shadowing are achieved across various viewpoints, but the device complexity increases
Solution Approach 1:
The liquid crystal display mask serves multiple functions simultaneously: it acts as both a display surface for 3D images and a controllable optical mask for managing light transmission. This multi-functionality reduces the need for separate components, thereby managing device complexity while achieving multi-viewpoint accuracy through a single integrated system.
Solution Approach 2:
The system creates virtual copies of mask patterns on the liquid crystal display surface that correspond to different viewing angles. These digital copies are rendered and displayed on the mask surface, allowing multiple viewpoints to be represented without requiring physical multi-viewpoint hardware, thus reducing mechanical complexity while maintaining adaptability.
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 creation of high-contrast, solid, and dynamic 3D images that appear correct from multiple viewpoints and under different lighting conditions without the need for special headgear, providing a more immersive and interactive visual experience.
Implementation Method 1
programmable mask display device, such as a liquid crystal display (LCD) panel
Implementation Method 2
non-inverting relay lens assembly
Data Source
AI summary
A multi-view mask apparatus for creating a three-dimensional (3D) display. The apparatus includes a relay lens assembly that is non-inverting of images passed through the relay lens assembly including images of background objects. The apparatus includes a mask display device concurrently displaying first and second mask content via the relay lens assembly. The first mask content is viewable from a first point of view (POV) and the second mask content is viewable from a second POV or the first mask content is apparent from a first light source direction and the second mask content is apparent from a second light source direction. The relay lens assembly includes four lenticular sheets arranged into first and second pairs with adjacent back sides. The mask display device is disposed in one pair between two lenticular sheets and operated to display the first and second mask content as interlaced images under the lenticules.