Tip Leading-End Detection Using Multi-Directional Light Blocking
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Solution Overview
Problem
Existing detection methods fail to accurately and efficiently detect the fluctuating position of a tip leading-end during operations on cells, particularly in a wide range, due to manufacturing and attachment variations.
Innovation Solution
A detection device and method utilizing a light source that outputs light in a lateral direction with a width, a movement mechanism, and a detector to detect first and second lights blocked by the tip leading-end, enabling precise positioning through a reference region that covers the fluctuation range.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single light source and detector are used, then the device complexity is reduced, but the measurement precision and detection range are insufficient
Solution Approach 1:
The patent divides the light source into multiple independent light sources (first light source, second light source) and the detector into multiple independent detection units (first detector, second detector). Each light source-detector pair operates independently to detect tip positions in different regions, thereby improving overall measurement precision and detection range while maintaining manageable system complexity through modular architecture
Solution Approach 2:
The patent extends the detection system from a single light path to multiple light paths arranged in different spatial dimensions. The first and second light sources emit light in different directions, and their corresponding detectors are positioned to receive light from different angles, creating a multi-dimensional detection network that covers a wider range and provides more precise position information
2Area of stationary object
If the light width is increased to cover fluctuation range, then the detection range is improved, but the measurement precision deteriorates
Solution Approach 1:
Instead of using one wide light beam that would compromise precision, the patent segments the illumination into multiple narrower light beams from different light sources. Each beam maintains sufficient narrowness for precise measurement while the collective arrangement of multiple beams covers the entire fluctuation range, thus resolving the contradiction between detection range and measurement precision
Solution Approach 2:
Each light source-detector pair is configured with specific local properties optimized for its detection region. The light width and detection sensitivity are tailored to the local requirements of each measurement zone, allowing high precision in each local region while the overall system covers the full fluctuation range through the combination of multiple locally-optimized detection points
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 accurate and wide-range detection of the tip leading-end position, allowing for precise operations such as aspiration and drug infusion with high resolution and reduced fluctuations.
Implementation Method 1
the light output from the light source until being detected by the detector includes first light and second light that advance in respective lateral directions that are different from each other, the movement mechanism moves the tip such that a part of the first light and a part of the second light are blocked by the leading end, and the detector detects the first light and the second light whose parts are blocked by the leading end
Data Source
AI summary
A detection device detects a position of a leading end of a tip for executing an operation on a cell via the leading end. The detection device includes a light source that outputs light in a lateral direction such that the light has a width when viewed along an up-and-down direction, a movement mechanism that moves the tip, and a detector that detects the light output from the light source, wherein the light output from the light source until being detected by the detector includes first and second lights that advance in respectively different lateral directions, the movement mechanism moves the tip such that a part of the first light and a part of the second light are blocked by the leading end, and the detector detects the first and second lights whose parts are blocked by the leading end.