Non-Circular Lens Flange Di-Cut Design for Camera Module Alignment
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Solution Overview
Problem
The miniaturization of camera modules in portable electronic devices requires reducing the size of camera lenses while maintaining performance, but simply removing parts of the lens can lead to interference and tilting issues during assembly, which lowers the camera module's resolution.
Innovation Solution
A lens assembly design featuring a non-circular flange portion with di-cut and arc portions that are strategically positioned to minimize contact with the lens barrel, ensuring proper alignment and preventing tilting, while maintaining optical performance through a non-circular shape for the lenses closer to the image sensor.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If parts of the lens are removed to reduce lens size, then the camera module size is reduced, but interference and tilting occur during assembly
Solution Approach 1:
The patent applies asymmetry by changing the lens shape from a traditional circular form to a non-circular shape that matches the rectangular image sensor. This asymmetric design removes unnecessary portions of the lens while maintaining proper alignment during assembly, preventing interference and tilting issues that would otherwise occur with a reduced-size circular lens.
2Volume of moving object
If the lens size is reduced to miniaturize the camera module, then the camera module becomes smaller, but the optical performance deteriorates
Solution Approach 1:
The non-circular lens shape is specifically designed to match the rectangular active area of the image sensor, maximizing the utilization of the sensor area while maintaining optimal optical performance. This asymmetric configuration ensures that light is properly directed onto the sensor without unnecessary lens portions, achieving miniaturization without compromising image quality.
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 reduces the overall size of the lens assembly, prevents tilting during assembly, and maintains the optical performance of the camera module, enabling miniaturization without compromising image quality.
Implementation Method 1
a lens including an optical portion to refract light
Data Source
AI summary
A lens assembly includes a lens including an optical portion to refract light and a flange portion extended along a periphery of at least a portion of the optical portion, and a lens barrel to accommodate the lens. The flange portion has a non-circular shape and includes a first di-cut portion on a first side surface of the flange portion, a second di-cut portion on a second side surface of the flange portion, and arc portions connecting the first di-cut portion and the second di-cut portion. A first distance between the first di-cut portion and an optical axis of the lens and a second distance between the second di-cut portion and the optical axis of the lens are smaller than a distance between respective opposite ends of the arc portions and the optical axis.