Optical Image Stabilization Memory Unit Positioning
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Solution Overview
Problem
Existing optical image stabilization systems in portable terminals face inefficiencies due to the need for precise initial position setting of reflection systems, which can be biased by magnetic attraction forces, requiring additional measurement processes and complex algorithm configurations, thus lowering process efficiency.
Innovation Solution
An apparatus with a memory unit storing reference position information allows for quick and accurate initial position determination of the optical system, utilizing electromagnetic forces and hall sensors to align the reflection system precisely, and minimizing magnetic interference by using bipolar-magnetized magnets.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the initial position of the reflection system is manually measured and adjusted, then the optical image stabilization precision is improved, but the process time and complexity increase significantly
Solution Approach 1:
The patent applies preliminary action by pre-storing reference position information about the optical system in a memory unit before actual operation. This allows the system to quickly retrieve and use the stored reference position data during optical image stabilization, eliminating the need for time-consuming manual measurement and adjustment processes while maintaining high precision positioning
2Measurement precision
If the initial position of the reflection system is manually measured and adjusted, then the optical image stabilization precision is improved, but the device complexity and algorithm configuration increase
Solution Approach 1:
The patent applies self-service by enabling the system to automatically retrieve and utilize stored reference position information from the memory unit without requiring external manual measurement or complex algorithm configuration. The system serves itself by using the pre-stored data to determine the initial position of the optical system, thereby simplifying the overall device complexity and eliminating the need for intricate algorithm setup
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 enables more precise and efficient optical image stabilization by accurately determining the initial position of the optical system, simplifying the process and improving image quality, while allowing independent operation in X-axis and Y-axis directions.
Implementation Method 1
a memory unit configured to store first reference position information that is information about a position at which the optical system is aligned in the first direction
Implementation Method 2
a first coil mounted to a circuit board to generate an electromagnetic force to the first driving magnet so that the main frame is moved in the first direction perpendicular to the optical axis
Implementation Method 3
a first yoke configured to generate an attraction force to the first driving magnet
Implementation Method 4
a first hall sensor configured to sense a position of the reflection system based on the first direction
Data Source
AI summary
An apparatus for driving an optical system with a memory unit includes a main frame having an optical system; a base frame configured to accommodate the main frame; a driving unit configured to move the main frame in a first direction perpendicular to an optical axis with respect to the base frame; and a memory unit configured to store first reference position information that is information about a position at which the optical system is aligned in the first direction.