Multiplanar Display System for Glasses-Free 3D Depth Perception
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Solution Overview
Problem
Conventional 3D projection technologies require viewers to wear special glasses, limiting their use in bright environments and increasing costs, and there is a need for cost-effective methods to create 3D visual displays that can capture attention in various settings without the need for headgear or glasses.
Innovation Solution
A multiplanar display system using a foreground and background display assembly with a light source, where the foreground display element is selectively transparent and the background display element is spaced apart to create a 3D effect by backlighting the foreground, allowing for concurrent display of images without the need for special glasses.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional 3D projection techniques using stereoscopic images are used, then depth perception is achieved, but viewers must wear special glasses
Solution Approach 1:
The display system is segmented into multiple independent display elements (first display element, second display element, third display element) positioned at different depths. Each display element presents images to specific viewing zones, allowing different viewers to see different perspectives simultaneously without requiring glasses. This spatial segmentation creates natural binocular disparity for depth perception.
Solution Approach 2:
The patent transitions from 2D flat displays to 3D spatial displays by positioning multiple display elements at different distances from the viewer. The first display element is positioned closest to the viewer, the second at an intermediate distance, and the third farthest away. This dimensional arrangement creates parallax effects and depth perception without requiring special viewing equipment.
2Reliability
If stereoscopic images with horizontal offset are used, then depth perception is achieved, but the system requires synchronized display to left and right eyes
Solution Approach 1:
The system segments the display function across multiple display elements positioned at different depths. Each display element independently presents content to specific viewing zones without requiring inter-eye synchronization. The first display element presents to a first viewing zone, the second to a second viewing zone, and the third to a third viewing zone, eliminating the need for synchronized stereoscopic delivery.
Solution Approach 2:
The patent introduces viewing zones as intermediaries between the display elements and viewers. These zones act as spatial mediators that naturally direct different perspectives to different viewers' eyes based on their physical position, eliminating the need for active synchronization mechanisms or special glasses.
3Adaptability or versatility
If multiple display elements are positioned at different depths, then 3D effect without glasses is achieved, but device complexity increases
Solution Approach 1:
Each display element serves multiple functions: it acts as both a content display device and a depth-positioning element. The first display element displays content while also being positioned at a specific depth to create the foreground layer. The second display element similarly serves dual purposes for the midground layer. This multi-functionality reduces the need for separate mechanisms to control depth and content delivery.
Solution Approach 2:
The patent adds the depth dimension to the traditional 2D display arrangement by positioning display elements at different distances from the viewer. The first display element is positioned closest to the viewer, the second at an intermediate distance, and the third farthest away. This dimensional arrangement creates parallax effects and depth perception without requiring special viewing equipment.
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 3D displays that are effective in bright environments, cost-effective, and do not require viewers to wear special glasses, enhancing the illusion of depth and space by synchronizing and mapping image streams between the two display elements.
Implementation Method 1
a light source positioned a distance away from a back or inner surface of the first display element to provide light to the back or inner surface of the first display element
Data Source
AI summary
An apparatus for providing a dimensional display such as a 3D effect without special-purpose glasses. The apparatus includes a foreground display assembly including a first planar display element with a front surface and an opposite back surface. Additionally, the apparatus includes a background display assembly including: (a) a second planar display element spaced apart from and parallel to the first planar display element; and (b) a light source backlighting a back surface of the second planar display element. The first and second display elements are emissive display units and concurrently display frames of a foreground image stream and corresponding frames of a background image stream. The first display element may be a transparent LCD panel, and the output light from the front surface of the second display element provides backlighting for the first display element such that foreground images are backlit by output light of the second display element.