Magnetic Lens Shutter Positioning for Complete Lens Blocking
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Solution Overview
Problem
Conventional lens devices with wider shutters face issues with incomplete blocking due to longer movement paths, often resulting in the shutter stopping short of fully covering the lens, which can lead to incomplete obstruction of the capturing range.
Innovation Solution
A lens device design incorporating a positioning magnet group and a fixed magnet group, where the shutter moves along a main body with magnets interacting to ensure complete blocking by providing tactile feedback through repulsion forces, guiding the shutter to the correct open or closed positions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the shutter movement path is extended to cover wider lens devices, then the shutter can cover the lens completely, but the shutter may stop short due to longer movement path causing incomplete blocking
Solution Approach 1:
The patent employs magnetic feedback through positioning magnets and fixed magnets that provide tactile resistance and positioning forces. The positioning magnets on the main body interact with fixed magnets on the shutter to create magnetic attraction and repulsion forces, giving users tactile feedback during movement and ensuring accurate positioning at the end positions, thereby solving the incomplete blocking issue caused by long movement paths.
2Reliability
If manual operation is used for shutter movement, then device complexity is reduced, but user may misjudge shutter position leading to incomplete blocking
Solution Approach 1:
The shutter mechanism serves itself through magnetic field interactions. The positioning magnets and fixed magnets automatically provide positioning forces and tactile feedback without requiring external control systems, sensors, or complex electronic components. The magnetic forces self-regulate the shutter movement and positioning, achieving reliable positioning while keeping the device structure simple.
3Measurement precision
If multiple magnets are added for positioning feedback, then shutter positioning accuracy is improved, but device complexity increases
Solution Approach 1:
The patent replaces complex mechanical positioning systems with magnetic field interactions. Instead of using mechanical sensors, switches, or complex linkages to detect and control shutter position, the invention uses magnetic attraction and repulsion forces between positioning magnets and fixed magnets to provide both positioning and tactile feedback, simplifying the overall device structure while achieving precise position detection.
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
Ensures complete blocking of the lens by providing tactile feedback to the user, preventing misjudgment of the shutter's position, thereby enhancing the reliability of the shutter mechanism.
Implementation Method 1
The first fixed magnet is close to the third side, and the first fixed magnet attracts with the first positioning magnet and repels with the third positioning magnet
Implementation Method 2
The second fixed magnet is close to the fourth side, and attracts with the second positioning magnet
Data Source
AI summary
A lens device includes a main body, a positioning magnet group, a shutter and a fixed magnet group. The main body includes first and second ends opposite to each other, and first and second sides opposite to each other. The positioning magnet group includes first, second and third positioning magnets. The first positioning magnet is close to the first end and the first side. The second positioning magnet is close to the second end and the second side. The third positioning magnet is located between the first and second positioning magnets. The shutter is movably disposed on the main body. The fixed magnet group is disposed on the shutter, and includes first and second fixed magnets. The first fixed magnet attracts with the first positioning magnet and repels with the third positioning magnet. The second fixed magnet attracts with the second positioning magnet.