Optical Unit Shake Correction Turning Support Mechanism
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Solution Overview
Problem
Existing optical units with shake correction functions face issues where the turning axis of the movable body deviates from the optical axis when the optical module is turned around the first or second axis, leading to ineffective shake correction.
Innovation Solution
The optical unit incorporates a turning support mechanism with a plate roll and a gimbal mechanism that allows the movable body to be turnably supported around the optical axis, ensuring the turning axis coincides with the optical axis, even when the movable body is turned around the first or second axis, utilizing a plate roll, plate holder, and a turning mechanism for precise alignment and support.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the optical module is turned around the first axis or around the second axis, then the shake correction function is activated, but the turning axis of the movable body deviates from the optical axis
Solution Approach 1:
The turning support mechanism is divided into multiple independent components: a plate roll fixed to the movable body, a plate holder with a facing part, and spherical bodies that enable rotation. This segmentation allows each component to be optimized for its specific function while maintaining overall alignment precision.
Solution Approach 2:
Spherical bodies are used as the rotation mechanism between the plate roll and the facing part of the plate holder. The spherical shape enables smooth rotation around the optical axis while maintaining precise alignment, as the sphere can rotate freely without introducing angular deviation to the turning axis.
2Reliability
If the movable body is turned around the first axis or second axis, then shake correction is performed, but the rolling correction magnetic drive mechanism cannot turn the movable body around the optical axis
Solution Approach 1:
The system dynamically adjusts the turning capability based on operational needs. When shake correction is active, the gimbal mechanism allows turning around the first and second axes. When rolling correction is needed, the plate roll mechanism enables independent rotation around the optical axis, providing dynamic adaptability to different correction modes.
Solution Approach 2:
The plate roll acts as an intermediary mechanism between the movable body and the rolling correction magnetic drive mechanism. It transmits the driving force from the magnetic drive mechanism to the movable body while ensuring rotation occurs precisely around the optical axis, even when the gimbal is in a corrected position.
3Manufacturing precision
If a turning support mechanism is added to maintain alignment, then the turning axis and optical axis remain coincident, but the device complexity increases
Solution Approach 1:
The plate holder serves multiple functions: it holds the plate roll, provides the facing part for the turning mechanism, and acts as a mounting structure for the gimbal mechanism. This multi-functionality reduces the need for separate components, thereby limiting the increase in device complexity while maintaining alignment precision.
Solution Approach 2:
The turning support mechanism is nested within the existing gimbal structure. The plate roll and plate holder are integrated into the movable body assembly, with the spherical bodies fitting within the space between the plate roll and the facing part. This nested arrangement minimizes additional space requirements and structural complexity.
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 configuration ensures accurate shake correction by maintaining alignment between the turning axis and optical axis, allowing the optical unit to effectively correct camera shake when the movable body is turned, enhancing image stability during movement.
Implementation Method 1
a shake correction magnetic drive mechanism structured to turn the movable body around the first axis and around the second axis
Implementation Method 2
a rolling correction magnetic drive mechanism structured to turn the movable body around the optical axis
Data Source
AI summary
An optical unit with a shake correction function includes a movable body having a lens, a turning support mechanism structured to turnably support the movable body around an optical axis of the lens, a gimbal mechanism structured to turnably support the turning support mechanism, a fixed body which supports the movable body through the gimbal mechanism and the turning support mechanism, a shake correction magnetic drive mechanism, and a rolling correction magnetic drive mechanism. The turning support mechanism includes a plate roll fixed to the movable body, a plate holder provided with a facing part which faces the plate roll in a direction of the optical axis, and a turning mechanism which is provided between the plate roll and the facing part and is structured so that the plate roll is turnable with respect to the plate holder. The gimbal mechanism turnably supports the plate holder around the first axis.