Optical Element Driving Mechanism With Magnetic Locking
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Solution Overview
Problem
Existing optical element driving mechanisms lack an effective locking structure to securely position optical elements, leading to potential misalignment and damage during impact.
Innovation Solution
The proposed optical element driving mechanism incorporates a positioning assembly with a first and second engaging element, and a driving unit that uses magnetic conductive elements and coils to control the engaging elements, ensuring secure locking and positioning of the optical element.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a locking structure is added to securely position the optical element, then reliability is improved, but device complexity increases
Solution Approach 1:
The first engaging element is nested within the second engaging element, forming a compact locking structure where the protrusion of the first engaging element fits into the recess of the second engaging element. This nesting approach achieves secure positioning without adding significant structural complexity.
Solution Approach 2:
The patent replaces traditional mechanical locking mechanisms with a magnetic driving unit that uses magnetic fields to control the engaging elements. This substitution reduces mechanical complexity while maintaining reliable positioning and locking functionality.
2Reliability
If the engaging elements are designed to prevent separation during impact, then reliability is improved, but manufacturing complexity increases
Solution Approach 1:
The protrusion and recess design creates an interlocking structure where the first engaging element's protrusion fits precisely into the second engaging element's recess. This nested configuration naturally resists separation forces during impact without requiring additional manufacturing steps or complex assembly processes.
3Volume of moving object
If miniaturization is achieved, then device size is reduced, but manufacturing precision requirements increase
Solution Approach 1:
By nesting the first engaging element within the second engaging element, the patent achieves compact dimensions while the simple protrusion-recess geometry maintains ease of manufacturing. The nested structure naturally defines the engagement geometry, reducing the need for high-precision machining compared to alternative miniaturization approaches.
Solution Approach 2:
The magnetic driving unit enables precise control of the miniaturized engaging elements through magnetic fields, compensating for the increased manufacturing precision requirements. This allows the system to achieve small size while maintaining reliable engagement through non-contact magnetic actuation.
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 solution effectively prevents the engaging elements from separating during impacts, enhances cost-effectiveness, and achieves miniaturization, thereby improving the reliability and durability of the optical element driving mechanism.
Implementation Method 1
a magnetic unit, corresponding to the first coil and having a first N pole and a first S pole, which are arranged along a first imaginary line
Implementation Method 2
a first coil, disposed on the first magnetic conductive element; a second coil, disposed on the second magnetic conductive element
Data Source
AI summary
An optical element driving mechanism includes a movable assembly, a fixed assembly, and a driving assembly. The movable assembly is configured to be connected to an optical element. The movable assembly is movable relative to the fixed assembly. The driving assembly is configured to drive the movable assembly to move relative to the fixed assembly in a range of motion. The optical element driving mechanism further includes a positioning assembly configured to position the movable assembly at a predetermined position relative to the fixed assembly when the driving assembly is not operating.