Optical Element Drive Layout for Compact Stable Lens Motion
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Solution Overview
Problem
The challenge of reducing the size of optical systems in modern electronic devices while maintaining durability and functionality, particularly in image-capturing and video-recording devices, has become crucial due to the trend towards smaller and more durable designs.
Innovation Solution
An optical element driving mechanism is introduced, comprising a movable portion, a fixed portion, a driving assembly, and a guiding assembly, which includes first and second guiding elements to facilitate the movement of the movable portion relative to the fixed portion, utilizing magnetic elements and coils for control and stabilization, with temperature and position sensors for precise adjustments.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the optical system size is reduced to meet modern device requirements, then the device becomes more compact and lightweight, but the durability and functionality for auto focus and optical image stabilization deteriorate
Solution Approach 1:
The guiding elements are nested within recesses formed in the fixed portion, with the recesses containing the guiding elements that extend through openings. This nesting arrangement allows the guiding structure to be integrated within the limited space of the optical system, reducing overall volume while maintaining the guiding functionality necessary for durability and proper optical element movement.
Solution Approach 2:
The guiding elements extend in multiple dimensions - they are disposed within recesses that have depth, and they extend through openings to provide guidance in the optical axis direction. This multi-dimensional arrangement allows the guiding function to be achieved within a compact volume by utilizing space in multiple directions rather than requiring a larger single-plane structure.
2Ease of manufacture
If guiding elements are exposed from both case and bottom for assembly, then assembly is simplified, but the structural integrity and precision of movement guidance deteriorate
Solution Approach 1:
The guiding elements are asymmetrically arranged - they are exposed from the bottom through openings but remain concealed within the case structure. This asymmetric exposure provides assembly access from the bottom while maintaining structural integrity and guidance precision from the case side, resolving the contradiction between ease of assembly and manufacturing precision.
Solution Approach 2:
Different portions of the guiding elements have different exposure characteristics - the portions near the bottom are exposed through openings for assembly access, while the portions near the case maintain structural integrity. This local differentiation of exposure quality allows both easy assembly and precise guidance to be achieved in different locations of the same guiding element.
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 mechanism effectively reduces the size of the optical system while enhancing durability and stability, allowing for precise auto focus and optical image stabilization, and minimizing collisions through strategic guiding element placement and frictional contact.
Implementation Method 1
a driving assembly (1300) used for driving the movable portion (1200) to move relative to the fixed portion (1100)
Data Source
AI summary
An optical element driving mechanism is provided. The optical element driving mechanism includes a movable portion used for connecting an optical element, a fixed portion, and a driving assembly used for driving the movable portion to move relative to the fixed portion. The movable portion is movable relative to the fixed portion.