Camera Module Anti-Shake Mechanism with Stabilized Angle Sensor
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Solution Overview
Problem
Existing camera modules with anti-shake mechanisms face challenges in stabilizing the angle sensor while maintaining a compact size, leading to precision issues in shake correction due to the tilt of components and increased size.
Innovation Solution
A camera module design that includes a holder body supporting circuit boards perpendicular to the optical axis, with a three-axis gyrosensor aligned with one axis, allowing for stable positioning of the angle sensor and reduced module size by using crossbar portions to support the circuit boards and a flexible wiring board for electrical connections.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the angle sensor is positioned in the space between the digital imager and the front cover, then the camera module size is reduced, but the bend portions tilt or shift causing the angle sensor axis to deviate from the optical axis direction
Solution Approach 1:
The patent divides the support structure into multiple independent components: a holder body for supporting the digital imager, separate support portions extending from the holder body, and a dedicated angle sensor mounting plate. This segmentation allows each component to be optimized independently, ensuring the angle sensor remains stable and aligned while maintaining compact overall dimensions.
Solution Approach 2:
The patent introduces an intermediary angle sensor mounting plate between the support portions and the angle sensor. This mounting plate provides a stable, precise mounting surface that ensures the angle sensor axis remains parallel to the optical axis direction, preventing tilt and shift issues while allowing the sensor to be positioned in the space between the digital imager and front cover.
2Reliability
If various components (angle sensor, controller, driver, flexible wiring board) are added for anti-shake mechanism, then shake correction function is improved, but the camera module size increases
Solution Approach 1:
The patent merges the angle sensor, controller, and driver into an integrated assembly where the angle sensor is mounted on the angle sensor mounting plate, which is supported by the holder body. This merging reduces the number of separate components and their interconnections, thereby reducing the overall space required while maintaining the complete anti-shake function.
Solution Approach 2:
The patent employs a nested structure where the angle sensor and its mounting plate are positioned within the space between the digital imager and the front cover, utilizing existing space rather than adding external components. The flexible wiring board is routed through the holder body and support portions, nesting electrical connections within the existing structural framework.
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
Enables precise camera shake correction with a compact camera module size by stabilizing the angle sensor and optimizing the placement of components, improving detection accuracy and reducing the module's overall dimensions.
Implementation Method 1
an angle sensor detects the camera shake
Data Source
AI summary
In a camera module for portable electronic equipment, a board holder includes a holder body extending transversely with an optical axis direction, and two support devices extending in the optical axis direction. A main circuit board (first circuit board) of a wiring board device with a flexible wiring board is supported on a rear surface of the holder body. A sub circuit board (second circuit board) is supported by the support devices. An image sensor for imaging and a signal processor are mounted on the main circuit board. An angle sensor, a controller and a driver are mounted on the sub circuit board. Thus, it is possible stably to position the angle sensor and to construct the camera module with a reduced size.