Camera Module Intermediate Lens Adhesive Bonding Inlet
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Solution Overview
Problem
Camera modules face low coupling reliability between the barrel and intermediate lenses, leading to reduced production yield due to trapped water vapor and foreign matter.
Innovation Solution
A camera module design featuring a barrel with inlets and guide grooves for adhesive bonding of intermediate lenses, ensuring secure fixation and alignment, and optionally including irregularities on lenses for precise optical axis alignment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If only the final lens or press-fit member is coupled to the barrel, then the structure is simple, but coupling reliability between the barrel and other lenses is low
Solution Approach 1:
The patent divides the lens assembly into multiple segments (front lens, intermediate lenses, and rear lens), each independently coupled to the barrel through separate adhesive bonding processes. This segmentation allows each lens to be securely fixed, improving overall coupling reliability while maintaining structural simplicity through modular assembly
Solution Approach 2:
The patent applies preliminary action by pre-defining inlet positions and guide groove structures in the barrel before lens assembly. These pre-prepared features ensure that adhesive is precisely positioned during the bonding process, improving coupling reliability without requiring complex real-time alignment mechanisms
2Stability of the object's composition
If water vapor remains inside the barrel, then the structure is sealed, but production yield deteriorates due to water vapor or foreign matter
Solution Approach 1:
The patent extracts harmful elements (water vapor and foreign matter) from the barrel interior by designing inlet structures that allow adhesive to flow through and carry contaminants outward. The inlets serve dual purposes: bonding the lenses and enabling discharge of trapped water vapor and foreign matter, thereby improving production yield while maintaining appropriate sealing
Solution Approach 2:
The adhesive acts as an intermediary substance that serves multiple functions: it bonds the intermediate lenses to the barrel, fills gaps between components, and facilitates the removal of water vapor and foreign matter during the assembly process. This intermediary role resolves the contradiction between sealing and contaminant removal
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
Enhances coupling reliability and manufacturing yield by firmly fixing intermediate lenses within the barrel, reducing positional deviations and image quality degradation.
Implementation Method 1
an adhesive bonding the intermediate lens to the barrel is disposed in the inlet
Data Source
AI summary
A camera module includes a barrel defining a hole to receive light reflected from a subject, and defining a lens accommodation space to accommodate a plurality of lenses, a front lens accommodated in the lens accommodation space and disposed closest to the subject, a rear lens accommodated in the lens accommodation space and disposed closest to an imaging plane, and an intermediate lens disposed between the front lens and the rear lens. An inlet is defined in a side surface of the barrel, the inlet is connected to the lens accommodation space, and an adhesive bonding the intermediate lens to the barrel is disposed in the inlet.