Camera Lens Assembly Integrating AF and OIS Units
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Solution Overview
Problem
Current camera lens assemblies face challenges in miniaturizing while effectively implementing both auto focus and optical image stabilization functions in a single module, with existing solutions often requiring distinct elements for each function and compromising on structure and ease of manufacturing.
Innovation Solution
A camera lens assembly design where a movable Auto Focusing (AF) unit is integrated with a movable Optical Image Stabilization (OIS) unit, allowing the OIS unit to float orthogonally on the AF unit, utilizing a voice coil motor and guide structures like ball bearings or wires for smooth movement and stabilization, enabling both functions within a compact and robust single module.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If distinct elements are used for autofocus and image stabilization functions, then each function can be implemented independently, but the device complexity and size increase
Solution Approach 1:
The patent merges the autofocus and optical image stabilization functions into a single integrated module. The lens assembly includes a lens unit that can move in multiple directions: along the optical axis for autofocus and perpendicular to the optical axis for image stabilization. This integration reduces the number of separate components and simplifies the overall device structure while maintaining both functions.
Solution Approach 2:
The lens assembly is designed to perform multiple functions through a single integrated structure. The same lens unit serves both autofocus (moving along optical axis) and optical image stabilization (moving perpendicular to optical axis) purposes. This multi-functionality approach reduces device complexity while maintaining functional reliability.
2Volume of moving object
If a single module design is used for both autofocus and image stabilization, then device size is reduced, but structural strength may be compromised
Solution Approach 1:
The patent combines autofocus and image stabilization into a single compact module, reducing the overall volume of the lens assembly. The integrated design allows both functions to coexist in a unified structure rather than requiring separate modules, achieving miniaturization while maintaining structural integrity through careful mechanical design.
3Manufacturing precision
If multiple separate components are used for autofocus and image stabilization, then each component can be optimized independently, but manufacturing complexity and cost increase
Solution Approach 1:
The patent integrates autofocus and image stabilization into a single manufactured unit, reducing the number of assembly steps and simplifying production. The lens assembly is designed as a unified structure that can be manufactured and assembled as one component, reducing manufacturing complexity and cost compared to assembling multiple separate components.
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 achieves stable auto focusing and optical image stabilization in a simplified, compact form, facilitating easy miniaturization and reducing manufacturing costs while enhancing the lens assembly's structural strength and reliability.
Implementation Method 1
a voice coil motor and guide structures like ball bearings or wires for smooth movement and stabilization
Data Source
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AI summary
A camera lens assembly is provided. The camera lens includes a movable Auto Focusing (AF) unit configured to move back and forth in a direction of an optical axis of an image sensor, and a movable Optical Image Stabilization (OIS) unit installed on the movable AF unit and configured to move back and forth in the direction of the optical axis together with the movable AF unit. The movable OIS unit floats in a direction orthogonal to the optical axis on the movable AF unit. The camera lens assembly simplifies the construction while implementing both the auto focus function and the optical image stabilization function. As a result, the camera lens assembly is advantageous for miniaturization and may improve reliability.