Planar Radiation Guide for Thin Interactive Display Imaging
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional displays that integrate both display and imaging functionalities are not feasible with thin form factors, as they require a large distance between the display panel and camera system for vision capture technology to function effectively.
Innovation Solution
An interactive display system utilizing a planar radiation guide that propagates radiation through total internal reflection, allowing for both display and imaging operations in a thin form factor by controlling radiation emission and detection at the radiation interface portion, enabling co-located display and imaging interfaces.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If vision capture technology is used to enable imaging functionality, then the system can detect objects interacting with the display, but the distance between the display panel and camera system increases making the display thick
Solution Approach 1:
The patent combines the display panel and camera system into a single integrated structure where the camera is positioned at the same plane as the display surface. This merging eliminates the need for distance between the display and camera, resolving the contradiction between enabling imaging functionality and maintaining thin display thickness.
Solution Approach 2:
The display surface serves dual functions: it acts as both the display panel for visual output and as the imaging surface for object detection. This multi-functionality allows the system to achieve both display and imaging capabilities without requiring additional thickness, as the same surface performs both roles.
2Length of stationary object
If the display panel is made thin to achieve compact design, then the form factor is improved, but vision capture technology cannot function effectively due to insufficient distance
Solution Approach 1:
Instead of placing the camera behind the display at a distance as in conventional vision capture technology, the patent inverts the approach by positioning the camera at the same plane as the display surface. This inversion allows thin display design while maintaining effective imaging functionality, as the camera captures images directly from the display surface without requiring depth separation.
3Adaptability or versatility
If both display and imaging functionalities are integrated, then the system becomes more versatile, but the device complexity increases
Solution Approach 1:
The patent merges the display and imaging systems into a single integrated structure where components are combined at the same plane. This merging reduces device complexity compared to having separate display and imaging assemblies, as it eliminates the need for additional mounting structures, spacing mechanisms, and alignment systems that would be required for separate components.
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 a thin interactive display that can image objects in contact or in front of the display, providing input to the system while maintaining effective display functionality, thus integrating both display and imaging capabilities in a compact design.
Implementation Method 1
The radiation propagation portion propagates the radiation by principles of total internal reflection
Implementation Method 2
the angle of reflection becomes sharper and sharper approaching the critical angle until total internal reflection can no longer be maintained when the angle of reflection first exceeds the critical angle. At that stage, the light exits the material.
Data Source
AI summary
An interactive display that uses a planar radiation guide (such as a planar light guide) to perform display and/or imaging. The planar radiation guide has a radiation propagation portion and a radiation interface portion. The radiation propagation portion propagates the radiation by the principles of total internal reflection (with perhaps some minor leakage). The planar radiation guide also has a radiation interface portion where radiation is more apt to exit or enter the planar radiation guide. The interactive display performs both display and imaging, while the planar radiation guide is used to perform at least one (but perhaps both) of the display and imaging operations.