Optical Module Adhesion Segmentation for Detachment Prevention
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Solution Overview
Problem
In optical modules, the miniaturization has made it insufficient to fix the lens component using adhesives at one point per side surface, leading to detachment when connected to other optical modules.
Innovation Solution
The optical module design includes multiple first and second adhesion portions along the side surfaces of the optical component, which increases the contact area and disperses stress during adhesive curing, ensuring a stable and reliable fixation by applying adhesives to multiple locations symmetrically and uneven surfaces.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If adhesive is applied at one point per side surface, then device complexity is reduced, but fixation reliability deteriorates causing detachment during module connection
Solution Approach 1:
The adhesive application is segmented from a single point into multiple discrete adhesion portions (first adhesion portions and second adhesion portions) distributed along the side surfaces of the optical component. This segmentation increases fixation reliability by distributing stress across multiple attachment points while maintaining manageable complexity through systematic placement patterns.
Solution Approach 2:
The adhesive application transitions from a zero-dimensional point attachment to a one-dimensional linear distribution along the side surfaces. By extending adhesive coverage from single points to continuous lines along the edges, the fixation reliability improves through increased contact area and stress distribution, while the structured dimensional approach prevents excessive complexity.
2Reliability
If multiple adhesion portions are provided along side surfaces, then fixation reliability is improved, but device complexity increases
Solution Approach 1:
The adhesion structure employs asymmetric placement patterns where first adhesion portions are positioned along first side surfaces and second adhesion portions along second side surfaces. This asymmetric yet systematic arrangement achieves high fixation reliability through comprehensive coverage while maintaining manufacturing simplicity by following consistent placement rules for each surface type.
Solution Approach 2:
Different adhesion portions are strategically positioned at specific locations along the side surfaces where stress concentration occurs during module connection. By concentrating adhesive application at these critical local regions rather than uniform distribution, the structure achieves maximum fixation reliability with minimal adhesive material and simplified application processes.
3Ease of manufacture
If adhesive is applied at single points, then manufacturing process is simplified, but stress concentration occurs during curing causing deformation
Solution Approach 1:
The curing process is segmented into multiple localized curing zones corresponding to each adhesion portion along the side surfaces. This segmentation distributes thermal and mechanical stress during adhesive curing across multiple small regions rather than one large concentrated area, preventing deformation of the optical component while maintaining a straightforward manufacturing process through sequential or simultaneous localized curing.
Solution Approach 2:
The adhesive application uses partial coverage along the side surfaces rather than complete surface coverage or single-point application. This partial action approach provides sufficient fixation and stress distribution to prevent curing-induced deformation, while avoiding excessive adhesive material that would complicate the manufacturing process and require additional cleanup steps.
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 suppresses deformation and ensures the optical component remains firmly attached to the substrate, preventing detachment during module connections.
Implementation Method 1
an adhesion portion fixing the optical component to the substrate. In this optical module, the adhesion portion includes a plurality of first adhesion portions provided along the first side surface and a plurality of second adhesion portions provided along the second side surface
Data Source
AI summary
An optical module includes a substrate including a main surface, an optical component including a bottom surface, and a first side surface and a second side surface each extending in a direction intersecting the bottom surface and facing each other, and an adhesion portion fixing the optical component to the substrate. The optical component is mounted on the substrate such that the bottom surface faces the main surface. In this optical module, the adhesion portion includes a plurality of first adhesion portions provided along the first side surface and a plurality of second adhesion portions provided along the second side surface.