Camera Module Elastic Support for Low-Resistance 3-Axis Stabilization
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Solution Overview
Problem
Conventional camera devices with a module tilt method face challenges in hand-shake correction due to high resistance and limited mobility of movable parts, particularly in rotational directions, and require additional work to reduce performance dispersion.
Innovation Solution
A camera device with a 3-axis or 5-axis hand-shake correction system using elastic members instead of PCBs to connect image sensors, featuring driving units for rotating and tilting the camera module and lens, and focus-tunable lenses for improved mobility and reduced resistance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a PCB is used to connect image sensors to the fixing unit, then electrical connection is achieved, but the movement of the movable part is restricted and resistance to movement is large
Solution Approach 1:
The patent divides the connection structure into multiple elastic members (first elastic member and second elastic member) that independently support different components (first image sensor and second image sensor). This segmentation allows each elastic member to flexibly accommodate movement without the rigid constraints of a single PCB structure, thereby improving mobility while maintaining electrical connection.
Solution Approach 2:
The patent changes the physical state and mechanical properties of the connection medium from rigid (PCB) to elastic (elastic members). The elastic members can deform under stress, changing their shape and position to accommodate the movement of image sensors during hand-shake correction, thus reducing resistance to movement while maintaining electrical connectivity.
2Ease of operation
If a PCB structure is used, then electrical connection is stable, but rigidity in the radial direction is high causing high resistance to rotational driving
Solution Approach 1:
The patent changes the mechanical parameters of the connection structure by replacing the rigid PCB with elastic members that have lower radial rigidity. This allows the structure to more easily accommodate rotational movements during rolling direction compensation, reducing the resistance to rotational driving while maintaining stable electrical connection through the elastic properties of the members.
3Reliability
If PCB processing is performed, then electrical connection is established, but dispersion of Young's modulus causes performance dispersion requiring additional work
Solution Approach 1:
The patent replaces the complex PCB processing with simpler elastic members that can be manufactured with more tolerances. The elastic members, being simpler components without complex circuit traces and solder joints, have less sensitive manufacturing processes, thereby reducing performance dispersion and eliminating the need for additional corrective work.
4Device complexity
If multiple image sensors are connected through PCB, then electrical connection is achieved, but the structure becomes complex
Solution Approach 1:
The patent segments the connection structure into multiple independent elastic members, each connecting to a specific image sensor. This segmentation simplifies the overall structure by eliminating the need for a complex PCB network, as each elastic member independently handles the connection and positioning of individual sensors, thereby reducing device complexity while supporting multiple sensors.
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 system achieves effective hand-shake correction across multiple axes with reduced resistance, minimizing current consumption and enhancing the mobility of movable parts.
Implementation Method 1
an elastic member which supports the movable part and rotates together with the movable part about the optical axis
Implementation Method 2
a first driving unit for rotating the camera module about a first axis perpendicular to an optical axis of the image sensor; a second driving unit for rotating the camera module about the optical axis and a second axis perpendicular to the first axis; and a third driving unit for rotating the camera module about the optical axis
Data Source
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AI summary
The present embodiment relates to a camera device comprising: a camera module including a first substrate, an image sensor arranged on the first substrate, and a lens arranged at a position corresponding to that of the image sensor, a first driving unit for rotating the camera module around a first axis that is vertical with respect to the optical axis of the image sensor; a second driving unit for rotating the camera module around a second axis that is vertical with respect to the optical axis and the first axis; and a third driving unit for rotating the camera module around the optical axis, wherein, when the camera module moves by means of at least any one from among the first driving unit, the second driving unit, and the third driving unit, the lens moves together with the image sensor while aligned with the optical axis.