Self-Aligning Optical Fiber Coupling for Microfluidic Cartridges
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Solution Overview
Problem
Existing optical coupling methods for microfluidics systems are cumbersome and limited, often requiring manual connection of optical fibers and lacking automation, with mechanical complexity primarily at the microfluidics device side, necessitating improved approaches for easy and automated coupling between microfluidics instruments and cartridges.
Innovation Solution
A self-aligning optical fiber system comprising a microfluidics instrument with an optical detection system and a self-aligning optical fiber system that includes an instrument fiber optic coupler and a cartridge fiber optic connector, utilizing a movable slide mechanism for alignment, allowing for course and fine alignment of optical detection channels, and a self-aligning optical fiber system that includes a microfluidics instrument with an optical detection system and a self-aligning optical fiber system that includes an instrument fiber optic coupler and a cartridge fiber optic connector, utilizing a movable slide mechanism for alignment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Extent of automation
If manual connection of optical fibers is used, then simplicity of connection is maintained, but automation is lost and connection efficiency is reduced
Solution Approach 1:
The optical coupling system is segmented into two independent parts: a movable slide mechanism on the instrument side and a stationary connector on the cartridge side. This segmentation allows the complex alignment functionality to be isolated to the instrument, keeping the cartridge simple while enabling automated coupling.
Solution Approach 2:
A self-aligning ferrule assembly acts as an intermediary component between the optical fiber and the connector. The ferrule with its precision-machined alignment features automatically positions the optical fiber relative to the connector, enabling accurate alignment without complex manual procedures.
2Productivity
If multiple optical connections are required, then detection capability is improved, but connection time and complexity increase
Solution Approach 1:
Multiple optical connections are merged into a single integrated coupling action. The movable slide mechanism simultaneously engages multiple optical fibers with their corresponding connectors in one motion, allowing parallel connection of multiple detection channels without proportionally increasing connection time.
Solution Approach 2:
The movable slide mechanism serves multiple functions: it performs coarse alignment, fine alignment, and simultaneous engagement of multiple optical fibers. This multi-functional design enables efficient connection of numerous detection channels through a single automated operation.
3Manufacturing precision
If precision alignment is required, then optical coupling quality is improved, but alignment complexity and time increase
Solution Approach 1:
Coarse alignment is performed as a preliminary action using the movable slide mechanism to position the optical components within a rough alignment. This preliminary positioning simplifies the subsequent fine alignment step, as only minor adjustments are needed after the initial coarse positioning is achieved.
Solution Approach 2:
The self-aligning ferrule assembly performs automatic alignment without requiring external adjustment mechanisms. The precision-machined features of the ferrule and connector work together to self-position the optical fibers, eliminating the need for complex manual or automated alignment procedures while maintaining high precision.
Data Source
AI summary
The present invention is directed to microfluidics systems, instruments, and cartridges including self-aligning optical fiber systems and methods of use thereof. More specifically, the disclosure describes a microfluidics instrument including an optical detection system, microfluidics cartridge, and a self-aligning optical fiber system capable of coupling the microfluidics instrument and the microfluidics cartridge. Further, the disclosure provides methods of optical detection operations using a microfluidics system.