Lens Barrel Miniaturization via Overlapping Stabilizer Mechanisms
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Solution Overview
Problem
Existing image-blur correction systems in miniaturized lens barrels face challenges in arranging support guiding and rotation restricting devices without increasing the diameter, which hinders the miniaturization of optical apparatuses.
Innovation Solution
The support guiding device and rotation restricting device are configured to overlap each other viewed from the optical axis, allowing for precise movement and rotation restriction while minimizing the diameter of the lens barrel, using a moving magnet driving mechanism and L-shaped shafts to guide the movable member in the pitch and yaw directions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the support guiding device and rotation restricting device are arranged in different positions viewed from the optical axial direction, then the moving direction and inclination to the optical axis of the movable member can be precisely defined, but the lens barrel diameter cannot be miniaturized
Solution Approach 1:
The support guiding device and rotation restricting device are merged into a single integrated structure where the L-shaped shaft serves dual functions: guiding movement in the optical axial direction and restricting rotation about the optical axis. This consolidation allows both devices to overlap when viewed from the optical axial direction, reducing the lens barrel diameter while maintaining precise position definition through the coordinated action of the abutment parts and L-shaped shaft.
2Reliability
If the three abutment parts and rotation restricting device are arranged in different positions, then the position of the movable member can be restricted in the optical axial direction, but the device complexity increases
Solution Approach 1:
The L-shaped shaft is designed as a multi-functional component that simultaneously serves as part of the support guiding device (restricting movement in the optical axial direction) and the rotation restricting device (preventing rotation about the optical axis). This universal component approach reduces device complexity by eliminating the need for separate structures, while maintaining reliable position restriction through the integrated action of the abutment parts and L-shaped shaft.
Data Source
AI summary
At least one exemplary embodiment is directed to an image-blur correction/reduction system miniaturized by arranging support guiding devices of a movable member and a rotation restricting device configured for restricting the rotation of the movable member about the optical axis so as to overlap each other viewed from the optical axial direction, a lens barrel, which can have the image-blur correction/reduction system, and an optical apparatus, which can have the same.