Camera Module Liquid Lens Autofocus and Mechanical Image Stabilization
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Solution Overview
Problem
Existing camera modules that combine autofocus and image stabilization functions using liquid lens modules face challenges in achieving perfect performance due to factors like temperature and gravity effects.
Innovation Solution
A camera module design that incorporates a liquid lens module for autofocus and mechanical image stabilization, featuring a housing with magnets, a substrate with coils, and electrical connections through conductive lines and wires to facilitate both functions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If both autofocus and image stabilization functions are implemented through the liquid lens module, then the camera module can achieve automatic focus adjustment and image stabilization, but the performance deteriorates due to temperature and gravity effects on the liquid lens
Solution Approach 1:
The patent divides the dual function into two separate modules: the liquid lens module handles only autofocus, while a separate mechanical image stabilization module handles image stabilization. This segmentation allows each module to operate independently without the performance degradation issues that arise when both functions are combined in the liquid lens module due to temperature and gravity effects.
Solution Approach 2:
The patent introduces a mechanical image stabilization module as an intermediary system that works alongside the liquid lens module. This mechanical module, which includes moving components and sensors, serves as a mediator to provide image stabilization functionality without interfering with the liquid lens's autofocus operation, thereby maintaining overall system reliability.
2Ease of operation
If the liquid lens module is used for autofocus, then automatic focus adjustment is achieved, but image stabilization function cannot be perfectly performed due to the nature of liquid lens
Solution Approach 1:
The patent segments the optical system into a liquid lens module dedicated to autofocus and a separate mechanical image stabilization module. This allows the liquid lens to perform autofocus smoothly without the added complexity and interference of image stabilization functions, while the mechanical module independently provides image stabilization capability.
Solution Approach 2:
The patent creates a multi-functional camera module where the liquid lens module provides autofocus and the mechanical module provides image stabilization. Together, these modules form a universal system that can perform both functions effectively, with each module optimized for its specific purpose rather than being compromised to handle both functions simultaneously.
3Reliability
If mechanical image stabilization is added to the camera module, then image stabilization function is improved, but device complexity increases
Solution Approach 1:
The patent segments the stabilization function into a dedicated mechanical module that can be independently designed and optimized. This modular approach, while adding complexity, allows for standardized components and simplified integration with the existing liquid lens module, as each module can be developed and tested separately before assembly.
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
The solution enables effective implementation of both autofocus and image stabilization functions in a camera module, improving performance and reliability by addressing the limitations of liquid lens modules.
Implementation Method 1
a substrate having a coil facing the magnet and disposed on the base
Implementation Method 2
a magnet disposed in the housing
Data Source
AI summary
The present exemplary embodiment relates to a camera module comprising: a housing; a liquid lens disposed in the housing; a magnet disposed in the housing; a base disposed and spaced apart from the housing; a substrate comprising a coil facing the magnet and disposed on the base; a plurality of wires connected to the housing and the substrate; and a connection part connecting the liquid lens and at least one wire of the plurality of wires, wherein the liquid lens and the substrate are electrically connected to each other through the connection part and the at least one wire.