Optical Mouse Dual-Opening Detection for Movement and Biometrics
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Solution Overview
Problem
Optical mice struggle to simultaneously detect the moving direction and biometric information from both a mouse pad and a living body due to the inability to receive light from both sources simultaneously through a single opening.
Innovation Solution
An optical mouse design with separate openings for emitting and receiving light from a target object and a living body, utilizing a deflection mirror to split the light into two paths for independent detection of movement and biometric information.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single opening is used for light reception, then the device structure is simple, but light from both target object and living body cannot be received simultaneously
Solution Approach 1:
The single opening is divided into multiple separate openings: a first opening for receiving light from the target object and a second opening for receiving light from the living body. This segmentation allows independent light paths for different detection functions, enabling simultaneous operation without requiring complex switching mechanisms.
2Volume of moving object
If one opening is used for both mouse pad detection and biometric detection, then the device is compact, but detection of moving direction and biometric information cannot occur simultaneously
Solution Approach 1:
The detection function is segmented into two parallel paths: one for target object detection (moving direction) and another for living body detection (biometric information). Both detections occur simultaneously through their respective openings, eliminating the need for time-sequential operation while maintaining compact device dimensions.
3Device complexity
If a single light path is used, then the optical system is simple, but independent detection of target object and living body is impossible
Solution Approach 1:
The optical system is segmented into separate light paths with dedicated openings for each detection target. This physical separation prevents cross-contamination of light signals, ensuring high detection accuracy for both target object movement and living body biometric information simultaneously.
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 simultaneous detection of the mouse's moving direction and biometric information, such as pulse rate and vascular age, by using separate light paths for the mouse pad and the user's body, enhancing usability and functionality.
Implementation Method 1
a light source unit configured to emit light
Implementation Method 2
a first light reception unit configured to receive first light from the target object through the first opening
Implementation Method 3
a second light reception unit configured to receive second light from the living body through the second opening
Data Source
AI summary
An input device configured to communicate with an information processing device includes a light source unit configured to emit light; a case including a first surface including a first opening and configured to emit the light toward a target object through the first opening, and a second surface including a second opening and configured to emit the light toward a living body through the second opening; a first light reception unit configured to receive first light from the target object through the first opening of the first surface; and a second light reception unit configured to receive second light from the living body through the second opening of the second surface.