Floating Display Touch Marking via Laser Projection
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Solution Overview
Problem
Traditional touch interaction methods are inadequate for floating displays as they require a physical medium, increasing the visual and psychological burden on operators and reducing human-computer interaction efficiency.
Innovation Solution
A floating display device equipped with a touch marking unit that projects a touch mark in a floating imaging region, utilizing a laser, MEMS reflector, and line-scan laser radar or depth camera to accurately determine and mark the touch position, allowing for accurate human-machine interaction without a physical carrier.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If traditional touch interaction methods are used with floating display, then physical medium is required, but visual and psychological burden increases and human-machine interaction efficiency decreases
Solution Approach 1:
The patent introduces a touch mark as an intermediary visual indicator between the user and the floating display. This touch mark appears at the intersection position of the touch object and floating imaging region, serving as a mediator that guides users without requiring physical contact with a traditional display surface, thereby reducing visual and psychological burden while maintaining interaction efficiency
Solution Approach 2:
The patent replaces the mechanical touch detection system with an optical projection system. Instead of relying on physical contact sensors, the system uses a touch marking unit that projects visual marks onto the floating imaging region to indicate touch positions, substituting mechanical interaction with optical information display to eliminate the need for physical media
2Measurement precision
If touch position is not clearly marked, then interaction accuracy is low, but adding marking system increases device complexity
Solution Approach 1:
The touch marking unit is designed to perform multiple functions: it projects touch marks for position indication, and can scan along the floating imaging region plane to track touch object movement. This multi-functional component achieves high measurement precision without proportionally increasing device complexity by consolidating several functions into a single integrated unit
Solution Approach 2:
The system creates a visual copy of the touch object's position information through the touch mark projection. Instead of directly measuring and displaying complex touch data, the system projects a simplified visual representation (the touch mark) at the intersection position, achieving accurate position indication with minimal computational and structural complexity
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
Enhances the accuracy of touch operations by clearly marking the touch position, reducing errors and improving the overall human-machine interaction experience.
Implementation Method 1
The touch marking unit includes a laser, a MEMS reflector for changing a projection direction of a laser light generated by the laser
Implementation Method 2
a MEMS reflector for changing a projection direction of a laser light generated by the laser
Implementation Method 3
the touch object locating unit includes a line-scan laser radar configured to scan a laser light along a plane in which the floating imaging region is located
Implementation Method 4
a projection lens for projecting the laser light from the MEMS reflector to display the touch mark
Data Source
AI summary
The present disclosure relates to a floating display device and a method for a floating display device to indicate a touch position. The floating display device includes a touch marking unit. The floating display device is configured to generate a floating image in a floating imaging region, and the touch marking unit is configured to project a touch mark for marking an area where a touch object intersects the floating imaging region.