Flow Channel Light Irradiation with Dynamic Position Control
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Solution Overview
Problem
Existing light irradiation devices face issues with irradiation unevenness, deviation, and defocus when directional light is used for long periods or in flow channels, leading to reduced efficiency and shorter lifespan of light sources.
Innovation Solution
A light irradiation device that includes a light source emitting directional light and an irradiation control unit to obtain positional information of specimens in a flow channel, allowing for precise control of light emission to prevent irradiation unevenness and defocus, using multiple or divided light sources for enhanced precision.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If directional light such as laser light is used for continuous or long-time irradiation, then high energy density and precision are achieved, but the life or operation time of the light source is restricted
Solution Approach 1:
The patent implements periodic irradiation by controlling the laser light source to emit light only when a specimen is detected in the flow channel, rather than continuous emission. The control unit activates the laser when needed and deactivates it when no specimen is present, achieving both high precision when irradiating and extended light source lifespan through reduced overall operation time
Solution Approach 2:
The patent employs a feedback mechanism where the detection unit continuously monitors the flow channel for specimen presence, and this detection information feeds back to the control unit which adjusts laser emission accordingly. This closed-loop control ensures the laser operates only when specimens are detected, optimizing both irradiation precision and light source durability
2Power
If directional light is used to irradiate specimens in a flow channel, then high energy density is achieved, but irradiation unevenness, irradiation deviation, or defocus is generated depending on the relationship between specimen position and irradiation spot position
Solution Approach 1:
The detection unit provides real-time feedback on specimen position within the flow channel, allowing the control unit to dynamically adjust the laser irradiation spot position to match the specimen location. This feedback-based positioning eliminates irradiation deviation and ensures uniform energy distribution across different specimens
Solution Approach 2:
The patent transforms the static laser irradiation system into a dynamic one where the irradiation spot position can be adjusted in real-time based on specimen location. The system adapts its irradiation parameters dynamically to maintain optimal energy density and uniformity regardless of specimen position variations in the flow channel
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 solution enables precise and efficient light irradiation in flow channels, reducing irradiation unevenness and defocus, extending the life of light sources and improving analysis accuracy in applications like fine particle analysis.
Implementation Method 1
a light source that emits directional light
Data Source
AI summary
A light irradiation device irradiates a specimen in a flow channel with directional light. The light irradiation device includes a light source that emits the directional light, and an irradiation control unit that irradiates the specimen in the flow channel with light, obtains positional information of the specimen, and controls the irradiation of the directional light based on the positional information.