Optical Image Stabilizer Layout for Tilt and Shake Correction
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Solution Overview
Problem
Conventional camera shake correction modules are limited in correcting various kinds of camera shake due to lens shift in x-axis/y-axis directions, and require complex spring structures for auto focus and camera shake correction, with difficulties in tilt correction and increased weight and size of components.
Innovation Solution
A camera device that corrects camera shake by shifting in x-axis, y-axis, and rotating around z-axis, using separate actuators for auto focus and image stabilization, and reduces the number of wires and terminals while synchronizing operations based on gyro data from a single sensor.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If lens shift in x-axis/y-axis directions is used for camera shake correction, then camera shake correction function is provided, but correction of various kinds of camera shake including tilt is limited
Solution Approach 1:
The patent adds rotational movement around the z-axis to the conventional x-axis and y-axis lens shifting mechanism. This dimensional expansion enables the lens to correct not only horizontal and vertical camera shake but also tilt camera shake, thereby enhancing the versatility of camera shake correction while maintaining a manageable structural complexity through the use of a single actuator with multiple degrees of freedom
2Ease of operation
If separate actuators are used for auto focus and camera shake correction, then functions are independently controlled, but device complexity and component count increase
Solution Approach 1:
The patent employs a single actuator that can perform multiple functions: auto focus adjustment and camera shake correction in three directions (x-axis, y-axis, and z-axis rotation). This multi-functional actuator design reduces the total number of actuators and components while maintaining independent control of each function through software-based actuation patterns, thereby resolving the contradiction between operational independence and device complexity
3Strength
If complex spring structures are used for auto focus and camera shake correction, then mechanical support is provided, but weight and size of components increase
Solution Approach 1:
The patent replaces complex mechanical spring structures with a single electromagnetic actuator that provides both mechanical support and active control for auto focus and camera shake correction. This substitution eliminates the need for multiple spring assemblies while maintaining adequate mechanical support through the actuator's inherent structural design, thereby significantly reducing the weight and size of the moving components
4Reliability
If multiple wires are used to connect image sensor, then electrical connections are established, but manufacturing complexity and assembly difficulty increase
Solution Approach 1:
The patent merges multiple electrical connection functions into a single integrated connector that accommodates all necessary wires for the image sensor and actuator connections. This consolidation reduces the number of separate connection points and simplifies the wiring harness, making the assembly process easier while maintaining reliable electrical connections through a unified interface design
Data Source
AI summary
A camera device according to an embodiment includes an image sensor including a plurality of connection pins; and a substrate having an open region formed in a region where the image sensor is disposed and including terminals connected to the plurality of connection pins of the image sensor; wherein a number of the plurality of connection pins of the image sensor is greater than a number of the terminals of the substrate, wherein one surface of the substrate includes: a first region and a second region facing each other in a first direction with the open region therebetween; and a third region and a fourth region facing each other in a second direction different from the first direction with the open region therebetween; and wherein a number of terminals disposed in each of the first to fourth regions is the same.