Camera Lens Flange Cut Layout for Assembly Form Error Reduction
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Solution Overview
Problem
Existing camera lenses suffer from form errors during assembly due to asymmetric deformation between X and Y directions, leading to reduced resolution, which is not adequately addressed by current technologies that use symmetrical cut portions for resin flow.
Innovation Solution
A lens design featuring perpendicular or symmetrically positioned cut portions in the flange part to minimize deformation and aberrations, ensuring equal force distribution during assembly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a single gate cut portion is formed in the lens flange, then the injection resin can flow smoothly, but the lens experiences asymmetric deformation during assembly, increasing form error
Solution Approach 1:
The patent applies asymmetry by intentionally creating non-symmetrical cut portions in the lens flange. Specifically, it forms a first gate cut portion and a second gate cut portion with different sizes and positions, which creates asymmetric deformation characteristics that balance the overall stress distribution during assembly, thereby reducing form error while maintaining resin flow capability
2Ease of manufacture
If the second gate cut portion is formed at a position opposite the first gate cut portion, then resin flow is improved, but the difference in force applied to the lens during fitting assembly between X and Y directions increases
Solution Approach 1:
The patent applies local quality by creating cut portions with different characteristics at different locations. The first gate cut portion and second gate cut portion have different sizes and positions, which creates locally differentiated deformation characteristics that collectively balance the force distribution during assembly, preventing excessive asymmetry in the overall lens structure
3Stability of the object's composition
If multiple cut portions are formed in the lens flange, then assembly force distribution is improved, but the lens structure becomes more complex
Solution Approach 1:
The patent applies segmentation by dividing the flange structure into multiple cut portions (first gate cut portion and second gate cut portion). This segmentation allows the assembly force to be distributed across multiple locations rather than concentrated at a single point, improving force distribution stability while maintaining a relatively simple overall lens structure
Data Source
AI summary
The present disclosure relates to a lens and a camera module including the same. The lens according to an embodiment of the present disclosure includes: an optical part forming an optical surface of the lens; a flange part formed around a circumference of the optical part; a first cut portion formed at one side of the flange part; and a second cut portion formed at another side of the flange part, wherein the first cut portion and the second cut portion form an angle, at which the first and second cut portions are perpendicular to each other, with respect to a central axis of the optical part. Accordingly, a lens form error occurring during assembly of the lens may be reduced, and a reduction in resolution of the lens may be prevented.