Optical Assembly Shake Correction via Integrated Guide and Preload
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Solution Overview
Problem
The existing optical assemblies with ball-based support mechanisms face challenges in manufacturing productivity due to the complexity of handling multiple balls, which complicates the assembly process and hinders the improvement of optical assembly productivity.
Innovation Solution
The optical assembly employs a movable body and frame body with guide and preload portions, featuring a spherical convex and concave surface interaction to support the movable body, eliminating the need for multiple balls and simplifying the assembly process by using a leaf spring for the preload portion to generate elastic force, thereby stabilizing the movable body's swing and preventing displacement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple balls are used in the support mechanism, then the movable body can be supported with respect to the fixed body, but the handling complexity increases and manufacturing productivity decreases
Solution Approach 1:
The patent merges the functions of multiple separate balls into a single integrated support structure. The guide portion with its concave surface and the preload portion with convex surfaces work together as one unified component, eliminating the need to handle and assemble multiple individual balls while maintaining the support and positioning functions.
Solution Approach 2:
The support mechanism is segmented into distinct functional portions: the guide portion with concave surface for positioning and the preload portion with convex surfaces for applying force. This segmentation allows each portion to be optimized for its specific function while simplifying the overall assembly process compared to using multiple separate balls.
2Reliability
If multiple balls are used in the support mechanism, then the movable body can be supported, but the device complexity increases
Solution Approach 1:
Multiple ball components are merged into a single integrated support structure consisting of the guide portion and preload portion. This reduces the number of discrete parts and simplifies the overall device complexity while maintaining the necessary support functionality.
Solution Approach 2:
The guide portion serves multiple functions: it provides positioning through its concave surface, guides the movement of the movable body, and works in conjunction with the preload portion. This multi-functionality reduces the need for separate components, thereby reducing device complexity.
3Reliability
If multiple balls are used in the support mechanism, then the movable body can be supported, but the ease of manufacture decreases
Solution Approach 1:
The guide portion and preload portion are designed as integrated components that can be manufactured as single pieces or pre-assembled units. This merging reduces the number of assembly steps required compared to installing multiple individual balls, thereby improving ease of manufacture.
Solution Approach 2:
The guide portion and preload portion can be pre-assembled or pre-positioned as a unit before final assembly with the movable body. This preliminary action simplifies the manufacturing process by reducing the number of steps required during final assembly.
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 enhances the stability and ease of assembly of the optical assembly, reduces the size in the optical axis direction, and improves productivity by eliminating the need for multiple balls, while maintaining effective shake correction functionality.
Implementation Method 1
One of the movable body and the guide portion includes a first convex surface protruding from the one of the movable body and the guide portion toward the other of the movable body and the guide portion. The other of the movable body and the guide portion includes a first concave surface in contact with the first convex surface. The first convex surface and the first concave surface have a spherical shape.
Implementation Method 2
The preload portion pushes the guide portion toward the movable body.
Data Source
AI summary
An optical assembly includes a movable body that includes an optical module, a frame body radially outward of the movable body, and support portions that swingably support the movable body with respect to the frame body. Each of the support portions includes a guide portion between the movable body and the frame body to support the movable body, and a preload portion that pushes the guide portion toward the movable body. A radially inner end portion of the preload portion is connected to a radially outer end portion of the guide portion. A radially outer end portion of the preload portion is supported by the frame body. One of the movable body and the guide portion includes a first convex surface, and the other includes a first concave surface in contact with the first convex surface.