Lens Module Hard-Soft Structure for Precise Miniature Focusing
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Solution Overview
Problem
The miniaturization of electronic devices, such as cameras and smartphones, complicates mechanical design and leads to low reliability and driving force for lens adjustment, making it challenging to effectively focus the lens.
Innovation Solution
An optical mechanism with a lens module comprising a holder and a barrel, where the holder has a higher hardness material than the barrel, and a driving assembly with a coil and magnet to move the lens module relative to a fixed module, utilizing resilient elements to restrict and position the coil and magnet for precise focusing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If miniaturization is implemented in electronic devices, then device size is reduced, but mechanical design difficulty increases and reliability decreases
Solution Approach 1:
The lens module is divided into distinct components with different material properties: a holder made of hard material for structural support and positioning, and a barrel made of soft material for cushioning and shock absorption. This segmentation allows each component to perform its specific function optimally, maintaining reliability in miniaturized devices.
Solution Approach 2:
The patent employs composite material construction by combining hard material (holder) and soft material (barrel) in a single lens module assembly. This composite approach enables the structure to simultaneously provide rigidity for precise positioning and flexibility for shock resistance, solving the reliability issue in miniaturized designs.
2Volume of moving object
If miniaturization is implemented in electronic devices, then device size is reduced, but driving force for lens movement decreases
Solution Approach 1:
The patent changes the material parameter (hardness) of different components to optimize force transmission. The hard holder provides rigid support for precise force application, while the soft barrel allows for controlled deformation and force distribution, maintaining effective driving force in the miniaturized lens module.
3Manufacturing precision
If hard material is used for the holder, then positioning precision is improved, but shock resistance decreases
Solution Approach 1:
The patent applies local quality by using hard material specifically for the holder where positioning precision is critical, and soft material for the barrel where shock resistance is needed. This localized material selection allows each component to excel at its specific function without compromising the other.
Solution Approach 2:
By combining hard and soft materials in a composite lens module structure, the patent achieves both precise positioning (through the rigid holder) and shock resistance (through the flexible barrel), resolving the contradiction between positioning precision and shock resistance.
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 configuration enhances the reliability and accuracy of lens movement while minimizing the size of the optical mechanism, preventing damage and ensuring precise positioning, thus addressing the challenges of miniaturization.
Implementation Method 1
The driving assembly has a coil and a magnet for driving the lens module to move relative to the fixed module
Implementation Method 2
The first resilient element has a first connecting portion, a second connecting portion, and a deformable portion connecting the first connecting portion with the second connecting portion
Data Source
AI summary
A lens module is provided, including a holder, a barrel, and an optical element. The optical element is affixed in the barrel, and the holder has a first material. Additionally, the barrel is affixed in the holder and has a second material, wherein the hardness of the first material is greater than the hardness of the second material.