Integrated Optical Sensor for Display Touch Control
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Solution Overview
Problem
Existing optical touch control systems face issues with time gaps between touch detection and action, high manufacturing costs, and inconvenient installation due to separate components of light sensors and emitters, which require adjustments.
Innovation Solution
An optical touch control system with a modular design that integrates a connecting frame, light curtain module, and optical detection module, where the light curtain module generates an invisible light curtain parallel to the display surface, and the optical detection module retrieves touch information, with a control module for synchronizing data transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the light sensor and light curtain emitter are separated, then the device can detect touch position, but there is a time gap between touch and detection
Solution Approach 1:
The patent combines the light curtain emitter and light sensor into an integrated optical sensor assembly, where the emitter and detector are positioned in close proximity within the same housing. This merging eliminates the time gap between touch and detection while maintaining measurement precision through the integrated design.
2Ease of manufacture
If the light sensor and light curtain emitter are disposed separately, then the device can function, but adjustment of relative position is required
Solution Approach 1:
The optical sensor integrates both the light curtain emitter and light sensor within a single housing structure, eliminating the need for separate installation and adjustment of multiple components. This merging simplifies installation while maintaining manufacturing flexibility through modular design.
3Adaptability or versatility
If the light sensor and light curtain emitter are manufactured separately, then the device can be assembled, but installation is inconvenient
Solution Approach 1:
The patent combines the light curtain emitter and light sensor into a pre-assembled optical sensor unit with a unified housing. This integration maintains adaptability through standardized interfaces while dramatically improving installation convenience as a single modular component.
4Ease of manufacture
If the light sensor and light curtain emitter are separate components, then the device can be assembled, but costs are higher
Solution Approach 1:
The optical sensor housing integrates both the light curtain emitter and light sensor into a single assembled unit, reducing the total number of discrete components. This merging lowers device complexity and associated costs while maintaining assembly flexibility through modular integration.
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
This modular design reduces time gaps between touch detection and action, lowers manufacturing costs, and simplifies installation by allowing for pre-calibration during manufacturing, enhancing synchronicity and ease of use.
Implementation Method 1
the light curtain module includes a light emitter electrically connected to the display so as to generate an invisible light curtain parallel to the display surface
Implementation Method 2
the optical detection module includes a light detector electrically connected to the display so as to retrieve information about a touch location where an object touches the invisible light curtain
Data Source
AI summary
An optical touch control system and an optical sensor thereof are provided. The optical sensor can be applied to a display having a display surface. The optical sensor includes a connecting frame, a light curtain module and a light emitter. The connecting frame has a first end portion and a second end portion opposite the first end portion. The light curtain module is disposed between the first end portion and the second end portion of the connecting frame. The light curtain module includes a light emitter electrically connected to the display so as to generate an invisible light curtain parallel to the display surface. The optical detection module is disposed on the second end portion of the connecting frame. The optical detection module includes a light detector electrically connected to the display so as to retrieve information about a touch location where an object touches the invisible light curtain.