Camera Module Lens Barrel Tilted Space Design
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Solution Overview
Problem
Existing camera modules face challenges in securing sufficient coupling force between the press-fit ring and the lens barrel, leading to potential separation of lenses, especially the rearmost lens, and increasing the number of manufacturing process steps.
Innovation Solution
The camera module design includes a first lens group and a second lens group, with a lens barrel featuring a first accommodation space for the first lens group and a second accommodation space for the second lens group, where the second space narrows from the object side toward the imaging plane, and protrusions are formed to support the rearmost lens, reducing separation risks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a press-fit ring is used to fix the lens to the lens barrel, then the lens can be secured in position, but the coupling force between the press-fit ring and the lens barrel is insufficient and the number of manufacturing process steps is increased
Solution Approach 1:
The patent removes the press-fit ring component entirely and integrates its function directly into the lens barrel structure. The lens barrel now includes an accommodating space with a tilted inner peripheral surface that directly contacts and secures the lens, eliminating the need for the separate press-fit ring and reducing manufacturing complexity while maintaining coupling force.
Solution Approach 2:
The patent merges the functions of the lens barrel and the press-fit ring into a single integrated structure. The accommodating space with the tilted inner peripheral surface combines the support, positioning, and securing functions that previously required separate components, thereby simplifying the overall device structure and reducing manufacturing steps.
2Reliability
If a press-fit ring is used to fix the lens, then the lens can be secured, but it is difficult to secure sufficient coupling force between the press-fit ring and the lens barrel
Solution Approach 1:
The patent eliminates the press-fit ring component that failed to provide sufficient coupling force and replaces it with a directly integrated solution in the lens barrel. The tilted inner peripheral surface of the accommodating space provides direct mechanical engagement with the lens, ensuring adequate coupling force without relying on the ineffective press-fit ring.
Solution Approach 2:
The patent utilizes a tilted inner peripheral surface in the accommodating space that contacts the lens at an angle. This angled curvature creates a mechanical interlock that enhances coupling force by distributing stresses more effectively across the contact interface, preventing lens separation more reliably than the previous press-fit ring design.
Data Source
AI summary
A camera module is provided. The camera module includes a first lens group including a foremost lens disposed closest to an object; a second lens group including a rearmost lens disposed closest to an imaging plane; and a lens barrel in which a first accommodation space and a second accommodating space are formed, the first accommodation space configured to accommodate the first lens group therein, and the second accommodating space configured to accommodate the second lens group therein. The second accommodation space may become narrower from an object side toward the imaging plane.