Wavelength-Multiplexing Optical Module Adhesive Curing Misalignment
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Solution Overview
Problem
Conventional wavelength-multiplexing optical communication modules face misalignment issues due to asymmetric resin adhesive curing and shrinkage, leading to inaccurate positioning of optical lenses.
Innovation Solution
The module features a substrate with circular or regular polygon-shaped recesses for the resin adhesive, ensuring symmetric stress distribution and preventing misalignment during curing, allowing for high positional accuracy of optical components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If lattice grooves are provided around optical lens mounting portions to prevent adhesive interference, then adhesive interference is prevented, but the adhesive periphery cannot be uniformly formed and asymmetric stress occurs during curing
Solution Approach 1:
The invention intentionally introduces asymmetric groove structures at specific locations (opposite to light incident sides) of otherwise symmetric adhesive application portions. This controlled asymmetry prevents adhesive from spreading toward optical components while maintaining uniform stress distribution during curing, thereby resolving the contradiction between preventing adhesive interference and maintaining positional accuracy
Solution Approach 2:
The groove structures are selectively provided only at specific locations (opposite to light incident sides) rather than uniformly around all adhesive portions. This localized asymmetric groove design prevents adhesive interference at critical areas while maintaining symmetric stress distribution during curing, achieving both adhesive interference prevention and positional accuracy
2Strength
If resin adhesive is applied to fix optical lenses, then optical components are secured, but asymmetric curing shrinkage causes misalignment of optical lenses
Solution Approach 1:
The invention introduces asymmetric groove structures at specific locations (opposite to light incident sides) of adhesive application portions. These grooves create controlled asymmetric constraints that balance the curing shrinkage forces, preventing misalignment while maintaining strong fixation of optical components
Solution Approach 2:
The groove structures are pre-formed in the substrate before adhesive application. These grooves preemptively counteract the asymmetric stress that would otherwise occur during adhesive curing, preventing misalignment before it can happen by providing predetermined stress relief pathways
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 design effectively inhibits misalignment caused by resin adhesive curing shrinkage, enabling precise fixation and operation of optical components with improved positional accuracy.
Implementation Method 1
stress acting on the optical lens when the resin adhesive cures and shrinks
Data Source
AI summary
A wavelength-multiplexing optical communication module includes: a substrate; a plurality of light sources on the substrate; a plurality of joint materials separately disposed on the substrate at positions respectively corresponding to the plurality of light sources; and a plurality of optical components fixed on the substrate by means of the plurality of joint materials respectively, wherein the substrate includes a plurality of forming portions which respectively form peripheries of the plurality of joint materials into shapes of circles or regular polygons having an even number of vertices.