Optical Image Stabilization Module Segmentation for Compact Camera Design
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Solution Overview
Problem
Current methods for optical image stabilization in mobile devices require a large-sized periscope-type lens due to the integration of an independent camera gyro and driving ICs, which increases the size of the camera module.
Innovation Solution
An electronic apparatus with a processor and gyro arranged on a mainboard, separate from the imaging module, where the imaging module includes a light reflection element and a driving device that rotates around a perpendicular axis based on feedback from the gyro, achieving optical image stabilization without the need for an independent gyro and driving IC within the imaging module.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If an independent camera gyro and driving IC are integrated within the imaging module to achieve optical image stabilization, then the optical image stabilization capability is improved, but the size of the imaging module increases
Solution Approach 1:
The patent divides the optical image stabilization system into two separate parts: the imaging module containing only the light reflection element, and the control system containing the gyro and driving IC on the mainboard. This segmentation allows the imaging module to be miniaturized while the stabilization function is maintained through the separate control system that receives gyro feedback and adjusts the light reflection element accordingly
Solution Approach 2:
The mainboard is designed to perform multiple functions: it serves as both the central processing unit and the control system for optical image stabilization. The gyro and driving IC on the mainboard provide stabilization control for the imaging module, allowing the mainboard to universally handle both computational tasks and optical stabilization without requiring dedicated space within the imaging module itself
2Manufacturing precision
If a periscope-type lens structure is used to achieve 3× optical zoom, then the photographing quality is improved, but the size of the camera module increases due to required stabilization components
Solution Approach 1:
The patent segments the camera system into the periscope-type lens imaging module for high-quality zoom photography and a separate stabilization control system on the mainboard. This allows the imaging module to be optimized for optical zoom without being burdened by stabilization components, while the mainboard provides the necessary stabilization control through the gyro and driving IC
Solution Approach 2:
The patent moves the stabilization control system from the traditional within-module three-dimensional space to the two-dimensional plane of the mainboard. By placing the gyro and driving IC on the mainboard rather than within the imaging module, the system achieves stabilization functionality without increasing the imaging module's volume, effectively utilizing the available space in another dimension
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 solution reduces the size of the camera module while maintaining optical image stabilization capabilities, allowing for a more compact and efficient camera assembly.
Implementation Method 1
a light reflection element...configured to reflect light incident from the light incident hole to the image sensor
Implementation Method 2
The processor may be configured to control the driving device to drive the mounting base with the light reflection element to rotate around a rotation axis based on feedback data sent from the gyro, such that optical image stabilization along an axial direction of the light incident hole is achieved
Data Source
AI summary
An electronic apparatus may include a processor, a gyro, and an imaging module. The imaging module may be arranged separately from the gyro and the processor, and include a shell and a light reflection element, a mounting base, an image sensor and a driving device received in the shell. The light reflection element may be fixed on the mounting base and configured to reflect light incident from the light incident hole to reach the image sensor, so that the image sensor may sense the external light of the imaging module. Based on feedback data sent from the gyro, the processor may control the driving device to drive the mounting base carrying the light reflection element to rotate around a rotation axis, to achieve the optical image stabilization along an axial direction of the light incident hole. The rotation axis is perpendicular to the axial direction of the light incident hole.