Imaging Lens Assembly Aperture Mechanism for Fixed Focus Stability
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Solution Overview
Problem
The challenge in modern portable electronic devices is to maintain fixed focus in imaging lens assembly modules as technology advances, requiring higher quality imaging capabilities.
Innovation Solution
An imaging lens assembly module with a lens carrier, rotatable component, and holder portion, featuring a blade set and rotating element to adjust the dimension of a through hole, ensuring fixed distances between the lens carrier and imaging surface, and optionally between the lens carrier and circuit board, using magnets and coils for displacement control.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the through hole dimension is made variable to adjust focus, then imaging quality is improved, but device complexity increases due to the rotatable component mechanism
Solution Approach 1:
The patent implements a rotatable component with rotatable blades that can dynamically adjust the through hole dimension. The blades are connected to a rotating element that, when rotated, changes the aperture size to control focus. This dynamic adjustment mechanism allows the system to adapt focus settings while maintaining a relatively compact structure by using rotational motion rather than linear movement of multiple components.
2Manufacturing precision
If the rotatable component is added to adjust through hole dimension, then focus control is improved, but ease of manufacture deteriorates
Solution Approach 1:
The patent combines the rotatable blades and rotating element into an integrated rotatable component assembly. The blades are connected to the rotating element such that a single rotational input simultaneously controls all blades, reducing the number of separate components that need to be manufactured and assembled. This merging approach simplifies the manufacturing process while maintaining precise focus control capability.
3Stability of the object's composition
If the blade set and rotating element rotate relatively to maintain fixed focus, then imaging stability is improved, but device complexity increases
Solution Approach 1:
The rotatable component serves multiple functions: it adjusts the through hole dimension for focus control, maintains fixed focus through coordinated rotation of blades and rotating element, and potentially enables aperture control. This multi-functionality reduces the need for separate mechanisms for each function, thereby improving focus stability without proportionally increasing overall device complexity.
Data Source
AI summary
An imaging lens assembly module includes a lens carrier, a rotatable component, an imaging surface and a holder portion. At least one lens element of the imaging lens assembly module is disposed on the lens carrier, and the lens carrier includes an assembling structure. The rotatable component includes a blade set and a rotating element. The blade set includes rotatable blades surrounding an optical axis to form a through hole. The rotating element is connected to the blade set. The imaging surface is located on an image side of the lens carrier. The holder portion is configured to keep a fixed distance between the lens carrier and the imaging surface. The blade set and the rotating element are disposed on the assembling structure, and the blade set and the rotating element rotate relatively to the assembling structure, so that the dimension of the through hole is variable.