Camera Module Housing Adhesive Path Design
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Solution Overview
Problem
In the production of camera modules, achieving accurate positional adjustment between the housing and substrate while ensuring strong bonding without complex processes is challenging due to issues like misalignment and mismatch of focus.
Innovation Solution
A camera module design featuring an adhesive agent pool and concave portions in the housing that form an adhesive agent path, allowing for precise bonding of the housing and substrate with a simple injection process, maintaining the required positional relationship between the lens unit and imaging element.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If adhesive agent is applied to bond housing and substrate, then bonding strength is improved, but adhesive agent may intrude into optical system causing image quality degradation
Solution Approach 1:
The housing is divided into multiple functional regions: a flat-bottomed cavity for adhesive application, a tapered portion to guide adhesive flow, and a restricted region with optical components. This segmentation allows adhesive to be contained and directed away from the optical system while maintaining bonding strength.
Solution Approach 2:
The tapered portion acts as an intermediary structure between the adhesive application area and the optical system. It guides and restricts adhesive flow, preventing direct intrusion into the optical path while still allowing sufficient adhesive to bond the housing and substrate.
2Manufacturing precision
If six-axes adjustment is performed for precise alignment, then positional accuracy is improved, but production process complexity increases
Solution Approach 1:
The substrate is preliminarily positioned on the flat bottom of the cavity before final bonding. This preliminary positioning establishes the correct optical alignment, and subsequent adhesive application maintains this alignment without requiring complex six-axes adjustment mechanisms.
Solution Approach 2:
The flat-bottomed cavity structure itself provides the alignment function. The flat bottom surface naturally positions the substrate in the correct orientation and location, eliminating the need for external six-axes adjustment equipment and simplifying the production process.
3Object-generated harmful factors
If housing structure is made complex to prevent adhesive intrusion, then image quality is improved, but manufacturing difficulty increases
Solution Approach 1:
The tapered portion uses a curved, gradually narrowing shape rather than sharp angles or complex geometries. This curved design naturally guides adhesive flow away from the optical system while being manufacturable using standard molding techniques, balancing protection with ease of manufacture.
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 approach results in a camera module with enhanced strength and simplified production, achieving accurate alignment and bonding without complex steps, thereby improving shock resistance and positional accuracy.
Implementation Method 1
an adhesion part provided to at least the first opposing space and bonding the housing and the substrate
Data Source
AI summary
A camera module with excellent strength is provided. A camera module includes a housing to which a lens unit is attached and a substrate having a certain positional relationship with the lens unit and supported by the housing, where the housing includes an adhesive agent pool provided to a first main plane of the substrate with a certain opposing space and an open end of an adhesive agent path including the opposing space that is provided to a side of a second main plane of the substrate.