3D Display Optical Sensor Array for Accurate Distance Calculation
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Solution Overview
Problem
Current three-dimensional interactive display systems face challenges in interactive sensitivity due to the relative positions of tracking devices and displays, leading to misjudgments and increased volume, especially when users interact at oblique angles.
Innovation Solution
An interactive three-dimensional display system incorporating an optical sensor array and a projection light source with a shadow mask featuring crossing strip patterns, which calculates relative positions and distances based on pattern lengths, divergent angles, and tilt angles to enhance interaction accuracy and prevent false actions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If an external tracking device is installed to capture user interaction, then the sensing capability is improved, but the device volume increases and spatial arrangement becomes inconvenient
Solution Approach 1:
The patent merges the tracking device functionality with the display panel by integrating optical sensors directly into the display structure. The sensing unit is combined with the display unit to form an integrated interactive display device, eliminating the need for separate external tracking devices while maintaining sensing capabilities.
Solution Approach 2:
The display panel serves multiple functions: it displays visual content and simultaneously acts as a sensing surface for detecting user interactions. The optical sensors integrated into the display enable the same surface to function both as output (display) and input (sensing) interface.
2Device complexity
If the tracking device is positioned at fixed relative positions to the display, then the device structure is simplified, but the interactive sensitivity decreases when users click at oblique angles or certain positions
Solution Approach 1:
The patent implements dynamic sensing capabilities that adapt to different interaction positions and angles. The optical sensors can detect interactions across the entire display surface regardless of position or angle, providing consistent sensing performance whether the user clicks at the center, edges, or at oblique angles.
Solution Approach 2:
The sensing capability extends across the full two-dimensional display surface rather than being limited to a specific spatial relationship. Users can interact at any position and angle on the display plane, effectively utilizing the entire surface area for interaction.
3Area of stationary object
If multiple external tracking devices are installed to improve sensing coverage, then the sensing range is improved, but the device complexity and manufacturing cost increase
Solution Approach 1:
The patent combines multiple sensing functions into a single integrated display panel structure. Instead of installing separate tracking devices around the display, the optical sensors are embedded within the display itself, providing full-area sensing coverage through a unified structure.
Solution Approach 2:
The integrated display panel performs both display and sensing functions across its entire surface area. The same physical structure serves as both the visual output interface and the input sensing interface, eliminating the need for additional dedicated sensing 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
The system improves interactive sensitivity by accurately calculating relative positions and distances, reducing false interactions and eliminating the need for external tracking devices, thus simplifying spatial arrangement and reducing manufacturing costs.
Implementation Method 1
The interactive device includes a projection light source and a shadow mask
Implementation Method 2
The three-dimensional display panel has an optical sensor array. The image is captured by the optical sensor array
Data Source
AI summary
An interactive three-dimensional display system includes a three-dimensional display panel which has an optical sensor array, an interactive device which includes a projection light source and a shadow mask, and an image recognizing unit. The shadow mask has a pattern to define an image projected by the interactive device. The image is captured by the optical sensor array. The pattern includes two strip patterns which cross each other. The image includes two strip images which cross each other. The image recognizing unit is electrically connected with the optical sensor array and calculates relative positions of the interactive device and the three-dimensional display panel according to the image. A method of calculating the relative positions includes calculating according to the lengths of one of the strip patterns and one of the strip images, and a divergent angle and tilt angle of the projection light source.