Stacked Edge-Lit Waveguide System for Eyewear-Free 3D Depth
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Solution Overview
Problem
Conventional 3D projection systems are often expensive, not suitable for high-light environments, and require special eyewear, limiting their application in providing cost-effective, eye-catching 3D imagery with depth and animation in various settings.
Innovation Solution
A display system utilizing edge-lit layers with programmable light sources and optical barriers to create 3D imagery without the need for special eyewear, achieved through total internal reflection and independent control of light emission from multiple baffled segments, allowing for depth and animation in a scalable and cost-effective manner.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional 3D projection systems are used to provide depth perception, then 3D imagery with depth is achieved, but special eyewear is required which increases cost and reduces convenience
Solution Approach 1:
The display system is segmented into multiple edge-lit layers, each capable of independent light emission and control. This segmentation allows the system to create multiple virtual images at different depths without requiring stereoscopic eyewear, as each layer contributes to the overall 3D effect through spatial separation of light sources
Solution Approach 2:
The invention transitions from conventional 2D projection to multi-layer 3D display by adding the dimension of physical layer separation. Multiple edge-lit layers are positioned at different depths, creating a volumetric display space where light from each layer contributes to perceived depth without requiring binocular vision or special glasses
2Reliability
If conventional 3D projection systems are used, then 3D imagery is provided, but the systems are expensive and not cost-effective
Solution Approach 1:
The system uses inexpensive edge-lit layers with programmable LED lighting instead of costly conventional 3D projection equipment. The edge-lit layers can be manufactured using standard materials and assembly processes, significantly reducing system cost while maintaining 3D imagery quality through the multi-layer optical configuration
Solution Approach 2:
The invention replaces complex mechanical projection systems with an optical system based on edge-lit layers and total internal reflection. This substitution eliminates the need for expensive projection lenses, mirrors, and synchronization mechanisms, achieving 3D imagery through simpler optical principles and programmable lighting control
3Reliability
If conventional 3D projection systems are used, then 3D images are displayed, but they are not suitable for high-light environments such as outdoor or brightly lit indoor spaces
Solution Approach 1:
The system uses programmable light sources with independent control of each edge-lit layer, allowing dynamic adjustment of brightness and timing. This dynamic control enables the display to maintain visibility in high-light environments by increasing output intensity and using sequential illumination to create persistent 3D images that overcome ambient light interference
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 dynamic, depth-filled 3D images without the need for special eyewear, suitable for diverse environments, including outdoor and brightly lit spaces, by using programmable LED lighting and optical baffling to control light emission and create the illusion of depth and animation.
Implementation Method 1
The output light is trapped or retained in the layer with total internal reflection (TIR)
Data Source
AI summary
A display system adapted to display images with animation and depth without requiring a viewer to wear special 3D eyewear. The system includes a controller and a programmable light source operating in response to control signals from the controller to output light. The system further includes an edge-lit layer with an edge optically coupled to the programmable light source, and the output light is trapped in the layer with total internal reflection (TIR), The layer is divided into first and second segments, and an optical barrier is inserted between the segments. First and second display areas, such as etched graphics, are provided on surfaces of the two segments, and the display areas are configured to enable the light trapped via TIR to escape. Independent lighting of the segments can be used to provide animation. Depth is provided by stacking one-to-many additional similar layers on the first layer.