Camera Module Optical Axis Alignment via Intermediary Positioning
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Solution Overview
Problem
High-resolution camera devices face challenges in optical axis alignment due to misalignment of image sensors and lenses during assembly, leading to deteriorated image quality and increased production costs.
Innovation Solution
The implementation of a camera device design that includes a board with cutouts and protrusions, along with solid bodies of varying heights, allows for the alignment of optical axes by adjusting the seating height of modules, thereby correcting tilts and misalignments during assembly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If separate assembly processes are used for image sensor module and lens assembly module, then manufacturing flexibility and modularity are improved, but alignment precision and optical axis alignment deteriorate
Solution Approach 1:
A positioning member is introduced as an intermediary component between the image sensor module and lens assembly module. This positioning member includes a positioning protrusion that fits into a positioning groove, creating a mechanical intermediary structure that ensures precise optical axis alignment while maintaining the modular separate assembly process
Solution Approach 2:
The positioning structures (protrusion and groove) are pre-configured on the positioning member before assembly. This preliminary preparation of alignment features ensures that when the modules are assembled, the optical axes are automatically aligned without requiring complex real-time adjustment procedures
2Ease of operation
If traditional assembly methods are used without alignment adjustments, then assembly simplicity is maintained, but image quality deteriorates due to misalignment
Solution Approach 1:
The positioning member with its protrusion-groove alignment structure enables the assembly process to self-correct alignment issues. The mechanical interlocking of the positioning protrusion and groove automatically ensures proper optical axis alignment, making the assembly process both simple and reliable without requiring complex external alignment tools or procedures
3Manufacturing precision
If multiple solid bodies of different heights are used for alignment, then optical axis alignment precision is improved, but device complexity increases
Solution Approach 1:
Instead of using a single complex alignment mechanism, the positioning function is segmented into discrete, simple protrusion-groove interfaces on the positioning member. Each interface handles a specific alignment dimension, and the collection of these simple interfaces achieves precise three-dimensional optical axis alignment without requiring a single complex structure
Data Source
AI summary
An electronic device is provide, and may include a first cover forming a first surface of the electronic device, a second cover forming a second surface of the electronic device, the second surface being positioned opposite the first surface, and a camera assembly at least partially disposed in a space between the first cover and the second cover, wherein the camera assembly may include an image sensor, a board having the image sensor mounted thereon and including at least one cut around the image sensor, a lens assembly disposed adjacent to a light-receiving surface of the image sensor, a side wall surrounding at least a portion of the lens assembly and having a protrusion fitted in the at least one cut, and at least one solid body provided between at least a portion of an inner surface of the at least one cut and the protrusion.