Curved Reflector Segmentation for Uniform Optical Fiber Curing
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Solution Overview
Problem
Conventional reflectors used for curing glass optical fiber coatings face challenges in uniformly illuminating glass optical fibers due to non-axially symmetric radiation from LED arrays, leading to non-uniform curing and inefficiencies in processing times.
Innovation Solution
The use of a non-imaging reflector with an interior surface comprising multiple portions extending along different curved contours, which concentrate curing light to a specific zone with an intensity of 60% or greater relative to the maximum intensity, ensuring uniform curing around the circumference of the glass optical fiber.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If conventional reflectors are used with LED arrays, then curing light can be provided, but non-uniform curing occurs due to non-axially symmetric radiation
Solution Approach 1:
The reflector interior surface is divided into multiple discrete curved portions (first portion, second portion, third portion, etc.), each with specific curvature characteristics. This segmentation allows independent optimization of each portion to redirect light from different LED array regions, achieving uniform circumferential curing through coordinated action of segmented elements
Solution Approach 2:
The reflector employs multiple curved portions with specifically designed curvature radii rather than flat or simple cylindrical surfaces. Each curved portion is configured to redirect curing light at specific angles, transforming the non-axially symmetric LED radiation into uniform circumferential illumination around the optical fiber
2Productivity
If curing light intensity is increased to improve curing speed, then processing time decreases, but energy consumption increases
Solution Approach 1:
The reflector design optimizes the spatial distribution parameters of curing light intensity rather than simply increasing total power. By configuring multiple curved portions with specific curvature radii and angular positions, the system achieves uniform intensity distribution around the fiber circumference, maximizing curing efficiency at moderate power levels
Solution Approach 2:
The coordinated action of multiple curved reflector portions creates continuous circumferential illumination around the optical fiber. This ensures that the entire fiber circumference receives adequate curing light simultaneously, enabling high-speed continuous curing without energy waste from uneven illumination patterns
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 approach enhances the concentration of curing light, achieving uniform curing and increased efficiency in fiber production by maintaining high draw speeds while ensuring consistent coating curing across the fiber circumference.
Implementation Method 1
each of the plurality of portions is configured to reflect curing light so that the reflected curing light is concentrated to a curing zone within the cavity
Data Source
AI summary
An apparatus for curing a coating composition disposed on a glass optical fiber. The apparatus includes a reflector, the reflector having an interior surface delineating a boundary of a cavity, the interior surface including a plurality of portions, each of the portions extending along a different curved contour. Furthermore, each of the plurality of portions is configured to reflect curing light so that the reflected curing light is concentrated to a curing zone within the cavity such that all the reflected curing light within the curing zone has an intensity of about 60% or greater relative to a maximum intensity of the reflected curing light. A fiber location for the glass optical fiber is located within the curing zone. Additionally, the plurality of portions includes at least a first portion and a second portion, the first portion having a different degree of curvature than the second portion.