Focus Position Encoders for Consistent Fiber Inspection Magnification
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Solution Overview
Problem
Existing optical fiber inspection devices struggle to achieve accurate analysis of end faces due to inefficiencies in automatic focus algorithms and manual adjustments, leading to inconsistent magnification values that affect the accuracy of defect detection.
Innovation Solution
Incorporating a focus position encoder with a system of lenses to determine precise focus position measurements, enabling calculation of magnification values and ensuring consistent analysis parameters for improved inspection accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If automatic focus algorithms and manual adjustments are used, then the device can perform focus adjustment, but the magnification values become inconsistent affecting detection accuracy
Solution Approach 1:
The patent replaces manual mechanical focus adjustment with an automated encoder-based system. The focus position encoder automatically tracks lens position, eliminating manual intervention and ensuring consistent magnification values through precise electronic measurement rather than mechanical estimation.
Solution Approach 2:
The focus position encoder provides continuous feedback on lens position to the control system. This feedback mechanism allows the system to maintain accurate focus and consistent magnification by monitoring and adjusting based on real-time position data, resolving the inconsistency problem.
2Measurement precision
If focus position encoder is added to the system, then magnification value consistency is improved, but device complexity increases
Solution Approach 1:
The focus position encoder serves multiple functions: it tracks lens position, determines magnification values, and provides feedback for focus control. By making this single component multi-functional, the patent achieves improved measurement precision without proportionally increasing overall system complexity.
3Device complexity
If manual focus adjustment is used, then device complexity is reduced, but inspection accuracy decreases
Solution Approach 1:
The encoder-based system enables the device to automatically determine and maintain correct focus and magnification values without requiring manual intervention. The system serves itself by automatically tracking lens position and adjusting inspection parameters, thereby improving inspection accuracy while maintaining operational simplicity.
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
Enhances the accuracy of optical fiber end face inspections by providing consistent magnification values, allowing for more reliable detection of dirt, scratches, and other defects, thereby improving inspection throughput.
Implementation Method 1
a focus assembly comprising a system of lenses configured to focus the image of the end face of the optical fiber for capture by the imaging device
Data Source
AI summary
Some implementations include an opto-mechanical assembly of a microscope system for testing an end face of an optical fiber. The opto-mechanical assembly may include an imaging device configured to capture an image of an end face of an optical fiber and a focus assembly comprising a system of lenses configured to focus the image of the end face of the optical fiber for capture by the imaging device; and at least one focus position encoder associated with the focus assembly and configured to determine at least one focus position measurement associated with a position of at least one lens of the system of lenses. The device may use the at least one focus position measurement to determine a magnification associated with the focus assembly.