Camera Module Substrate Support Vibration Isolation
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Solution Overview
Problem
The alignment of the optical axis in camera modules is often disrupted due to loosening of components during the ultrasonic or laser fusion process in manufacturing, leading to misalignment of the lens and image sensor.
Innovation Solution
A camera module design featuring a substrate supporting member with a screw coupling portion, an extending portion, a hole, and a bent portion that creates a separation space, which secures the substrate to the housing and prevents loosening by generating a tensile force when the coupling member is fastened.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If ultrasonic or laser fusion is used to combine the front body and rear body, then the component accommodating area is widened and manufacturing is simplified, but the screw loosening occurs due to vibration during fusion, causing misalignment of the optical axis
Solution Approach 1:
The substrate supporting member is pre-installed on the front body before the ultrasonic or laser fusion process. The coupling members are preliminarily positioned to engage with the substrate supporting member, establishing a stable connection that will prevent loosening during the subsequent fusion vibration.
Solution Approach 2:
The substrate supporting member acts as an intermediary component between the front body and the substrate. It provides a stable mounting platform with bent portions that engage with coupling members, isolating the substrate from the vibrations generated during ultrasonic or laser fusion of the housing components.
2Strength
If screw coupling is used to attach the substrate to the housing, then the substrate is securely fixed, but the screw loosens due to vibration during ultrasonic or laser fusion
Solution Approach 1:
The substrate supporting member incorporates bent portions that can elastically deform during the ultrasonic or laser fusion process. These bent portions absorb the vibration energy through controlled deformation, preventing the transmitted vibrations from loosening the screw coupling members while maintaining secure attachment.
Solution Approach 2:
The coupling members are designed with specific geometric parameters including bent portions with predetermined elasticity and engagement angles. These parameter optimizations ensure that the coupling members maintain sufficient fixing strength while accommodating the vibrational stresses during fusion without loosening.
3Device complexity
If the substrate is directly attached to the housing, then the structure is simplified, but the optical axis alignment cannot be maintained due to component loosening
Solution Approach 1:
The attachment structure is segmented into distinct functional components: the substrate supporting member with bent portions, the coupling members, and the front body. This segmentation allows each component to perform its specific function - the bent portions handle vibration absorption while the coupling members provide secure attachment - thereby maintaining optical axis alignment without excessive overall 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
This design effectively prevents the loosening of components, ensuring the optical axis remains aligned and stable, thereby maintaining the precision of the camera module.
Implementation Method 1
the bent portion comprises a plurality of bent portions, and the plurality of bent portions is spaced apart from each other, and wherein a separation space is formed between two adjacents of the plurality of bent portions
Data Source
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AI summary
Provided is a camera module. The camera module according to one aspect of the present invention comprises: a housing; a substrate arranged on the housing; a substrate supporting member arranged on the housing and supporting the substrate; and a coupling member that fixes the substrate on the housing, wherein the substrate supporting member includes a body, an extending portion which extends from the body to be disposed between the substrate and the inside surface of the housing, a hole formed in the extending portion, and a bent portion which extends from the extending portion inwardly of the hole and towards the substrate.