Optical Fiber Coating Detection via Reflection Mirror Imaging
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing methods for detecting the coating condition of optical fibers struggle when the ratio of the coating outer diameter to the glass diameter is small, leading to difficulties in visually recognizing grayscale images and requiring complex and costly detection systems.
Innovation Solution
A coating condition detection method using an imaging optical system with a reflection mirror and a guide hole, which allows light released from the coated fiber to be imaged onto a plane, enabling detection of light intensity variations and subsequent analysis of the coating condition.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional optical detection methods are used for small diameter ratio fibers, then measurement capability is maintained, but device complexity and cost increase significantly
Solution Approach 1:
The patent combines the light source, reflection mirror, and imaging optical system into an integrated detection装置. The reflection mirror is positioned to receive light from the fiber and direct it through the imaging optical system, merging multiple functional components into a unified structure that reduces overall system complexity while maintaining measurement precision for small diameter ratio fibers
Solution Approach 2:
The detection system is designed to handle various fiber types and diameter ratios using the same optical configuration. The reflection mirror and imaging optical system can detect coating conditions across different fiber specifications, making the device universally applicable without requiring complex adjustments or multiple specialized systems
2Measurement precision
If conventional detection systems are used, then coating condition measurement is possible, but manufacturing cost increases
Solution Approach 1:
The system uses the fiber's own emitted or transmitted light as the detection signal source. The light from the fiber interacts with the coating layer and is reflected back through the imaging optical system, eliminating the need for complex external illumination systems and reducing manufacturing costs while maintaining measurement precision
Solution Approach 2:
The patent replaces complex mechanical measurement systems with an optical-based detection method. By using light interaction and imaging optics to measure coating conditions, the system avoids expensive mechanical contact sensors and complex actuation mechanisms, reducing manufacturing cost while preserving measurement accuracy
3Device complexity
If simple detection structures are used, then device complexity is reduced, but measurement capability for small diameter ratios is lost
Solution Approach 1:
The reflection mirror is strategically positioned and oriented to optimize light collection from the specific region of the fiber where coating conditions need to be measured. The imaging optical system is configured with appropriate magnification and focal characteristics to resolve the fine details of small diameter ratio fibers, providing local optimization for enhanced measurement precision without overall system complexity
Solution Approach 2:
The system transforms the measurement problem from direct spatial measurement to optical intensity and distribution measurement. By detecting light intensity variations and spatial distribution patterns in the imaged coating layer, the system can infer coating conditions for small diameter ratios through optical dimension analysis rather than direct mechanical dimension measurement
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
This method allows for efficient detection of the coating condition of optical fibers, even with a small diameter ratio, using a simple device structure, reducing complexity and cost while maintaining accuracy.
Implementation Method 1
the imaging optical system thus prepared includes a reflection mirror disposed on an optical path between the imaging plane and the object plane conjugate with the imaging plane
Implementation Method 2
the imaging optical system is caused to form, on the imaging plane, an image of light released from a portion of the coated fiber that has passed through the guide hole of the reflection mirror
Data Source
AI summary
This coating condition detection method according to one embodiment uses a simple device structure to detect the coating condition of a resin layer of a coated fiber. Under the coating condition detection method, an imaging optical system including a reflection mirror having a guide hole through which the optical fiber passes is prepared, and the imaging optical system is disposed so as to cause an object plane conjugate with an imaging plane to intersect the optical fiber that has passed through the reflection mirror and forms an image of light released from the optical fiber on the imaging plane to detect intensity of light at each point on the imaging plane with the intensity of light associated with information on a corresponding position on the object plane.