Dual Camera Module with Integrated Actuator and Single IC
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Solution Overview
Problem
Dual camera modules in mobile devices are vulnerable to deformation and size limitations due to their parallel design, requiring additional reinforcement and restricting size reduction.
Innovation Solution
A camera module design featuring a housing with independently movable lens modules, an actuator using magnets and coils for optical axis movement, and a single integrated circuit for controlling lens module positions and movements, along with position sensors for closed-loop control, which simplifies connections and reduces module size.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If two independent camera modules are disposed in parallel, then the dual camera can be implemented, but the module size cannot be reduced and additional reinforcement is needed
Solution Approach 1:
The patent combines two independent camera modules into a single integrated housing structure. The first and second lens modules are accommodated within the same housing, sharing common structural support and control systems. This merging approach maintains the dual camera functionality while reducing the overall module size compared to separate parallel dispositions.
Solution Approach 2:
The single housing structure serves multiple functions: it accommodates both lens modules, provides structural reinforcement for both, houses the shared actuator system, and integrates the control circuitry. This multi-functional design eliminates the need for separate reinforcement structures for each camera module, thereby reducing overall size.
2Adaptability or versatility
If two independent camera modules are disposed in parallel, then the dual camera can be implemented, but additional reinforcement by reinforcing members is needed
Solution Approach 1:
The housing is designed as a single integrated structure that provides structural support for both lens modules simultaneously. This unified housing eliminates the need for separate reinforcing members for each camera module, reducing structural complexity while maintaining the dual camera configuration.
Solution Approach 2:
The housing performs multiple structural functions: it protects both lens modules, provides mounting surfaces for both, houses the actuator mechanisms, and integrates the control systems. This multi-functional housing reduces the need for additional specialized reinforcing components.
3Ease of operation
If separate control systems are used for each lens module, then independent control is achieved, but manufacturing complexity and costs increase
Solution Approach 1:
The patent employs a single integrated circuit board that controls both the first and second lens modules. This unified control system reduces manufacturing complexity by eliminating the need for separate control systems, while still enabling independent operation of each lens module through software or control logic on the single circuit board.
Solution Approach 2:
The single control circuit board performs multiple functions: it controls the actuator for the first lens module, controls the actuator for the second lens module, processes data from both image sensors, and manages the overall camera system. This multi-functional control system simplifies manufacturing while maintaining independent control capabilities.
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
Enhances durability and reduces manufacturing complexity and costs by allowing independent movement of lens modules, improving productivity and enabling smaller, more robust camera module designs.
Implementation Method 1
an actuator using magnets and coils for optical axis movement
Implementation Method 2
position sensors for closed-loop control configured to sense positions of the first and second lens modules
Data Source
AI summary
A camera module includes a housing; a first lens module and a second lens module accommodated in the housing; a printed circuit board attached to the housing; an actuator disposed between the first and second lens modules and the housing and configured to move the first and second lens modules in an optical axis direction; and a single integrated circuit disposed on the printed circuit board and configured to control movements of the first and second lens modules.