Lens Module Protrusion for Adhesive Containment and Barrel Rigidity
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The deformation of lens barrels due to adhesive flow during the curing process, which affects the rigidity and shape of the lens module, is a challenge in existing camera modules.
Innovation Solution
A lens module design featuring a protrusion on the lens barrel and an injection groove with a step portion on the lens holder, which prevents adhesive from flowing out of the intended application region, thereby maintaining the structural integrity of the lens barrel.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If liquid adhesive is applied between the lens holder and lens barrel, then bonding strength is improved, but adhesive may flow out of the application region causing lens barrel deformation
Solution Approach 1:
The lens holder is segmented into multiple functional regions: a bonding region for adhesive application, a protrusion that acts as a physical barrier, and a seating portion that receives the lens barrel. This segmentation prevents adhesive from flowing into unwanted areas while maintaining bonding effectiveness.
Solution Approach 2:
The protrusion acts as an intermediary element between the bonding region and the lens barrel seating area. It serves as a physical barrier that stops adhesive flow, preventing the harmful effect of adhesive contamination on the lens barrel shape while allowing the bonding function to proceed.
2Volume of moving object
If the lens barrel side surface is made thin, then the overall module size is reduced, but rigidity is decreased making the lens barrel susceptible to deformation
Solution Approach 1:
The protrusion is pre-formed on the lens holder before adhesive application. This preliminary structural feature creates a built-in barrier that prevents adhesive overflow, eliminating the need for thicker lens barrel walls to prevent deformation during bonding.
Solution Approach 2:
The design converts the potential harm of adhesive overflow into a beneficial constraint mechanism. The protrusion, which could be seen as an additional component increasing complexity, actually serves to protect the lens barrel shape and enables the use of thinner, more compact designs.
3Shape
If a protrusion and seating portion structure is added, then adhesive containment is improved, but device complexity increases
Solution Approach 1:
The protrusion and seating portion structure serves multiple functions simultaneously: it acts as a mechanical barrier to contain adhesive, provides a positioning feature for the lens barrel, and creates a localized bonding region. This multi-functionality reduces the need for separate components, thereby limiting the increase in overall device complexity.
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
The design effectively prevents deformation of the lens barrel, enhancing the reliability and optical performance of the camera module by containing the adhesive within the designated area.
Implementation Method 1
The adhesive may be a liquid adhesive, and the liquid adhesive may harden after being applied. During the process of hardening the liquid adhesive applied between the lens holder and the lens barrel, heat may be generated, and the volume or shape of the adhesive may change.
Data Source
AI summary
A lens module includes a lens holder having a hollow region; and a lens barrel disposed in the hollow region. A protrusion is disposed on an outer surface of the lens barrel. An injection groove, configured to accommodate adhesive, is disposed on the lens holder. A seating portion, connected to the injection groove, is disposed on an inside surface of the lens holder. The protrusion is disposed on the seating portion.