Camera Module Lens Barrel Melt-Coupling Stability
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Solution Overview
Problem
Existing camera modules face issues with the resolution being impaired due to thermal deformation of adhesives used between the lens barrel and the barrel holder, leading to a lack of firm binding between these components.
Innovation Solution
The camera module incorporates a first reinforcing member on the lens barrel and a second reinforcing member on the barrel holder, which are melt-coupled to enhance the bonding between the two components, thereby improving the coupling stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If adhesive is used to join lens barrel and barrel holder, then assembly is simplified, but thermal deformation occurs causing position distortion
Solution Approach 1:
The patent extracts the adhesive bonding method from the joining process and replaces it with a mechanical interference fit system. The lens barrel includes protrusions that engage with corresponding recesses in the barrel holder, eliminating the need for adhesive while preventing thermal deformation and maintaining position accuracy.
Solution Approach 2:
The patent introduces an intermediary mechanical structure (protrusions and recesses) between the lens barrel and barrel holder. This intermediary mechanism provides stable mechanical coupling that resists thermal deformation, serving as a mediator that maintains precise positioning without relying on temperature-sensitive adhesive materials.
2Strength
If adhesive is used to bind lens barrel and barrel holder, then components are joined, but binding strength is insufficient under thermal changes
Solution Approach 1:
The patent removes adhesive from the binding mechanism and implements a mechanical interference fit. The protrusions on the lens barrel engage with recesses in the barrel holder to create a strong, stable mechanical connection that maintains binding strength and reliability under thermal changes.
Solution Approach 2:
The patent creates a composite structural system combining the lens barrel, protrusions, recesses, and barrel holder into an integrated mechanical assembly. This composite structure provides enhanced binding strength and thermal stability through the synergistic interaction of its components, eliminating the weaknesses of adhesive-based binding.
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 configuration results in a camera module with improved coupling stability between the lens barrel and the barrel holder, reducing the likelihood of resolution degradation due to external impacts or thermal changes.
Implementation Method 1
a second reinforcing member, disposed on the barrel holder, and configured to be melt-coupled to the first reinforcing member
Data Source
AI summary
A camera module is provided. The camera module includes a lens barrel configured to accommodate a lens, a barrel holder configured to be coupled to the lens barrel, a first reinforcing member, disposed on the lens barrel, a second reinforcing member, disposed on the barrel holder, and configured to be melt-coupled to the first reinforcing member, and a driving unit, configured to move the lens barrel and the barrel holder in an optical axis direction. A driving coil of the driving unit is disposed on a housing of the camera module, and a driving magnet of the driving unit is disposed on the barrel holder.