Optical Element Driving Mechanism Damping Lens Shake
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing lens driving devices, such as those using Voice Coil Motors (VCM), experience extended Dynamic Response Time and focusing time due to lens shake during focusing.
Innovation Solution
Incorporating a damping element connected between the arm portion of a spring sheet and the frame or lens holder of the lens driving device to absorb and inhibit lens shake, thereby shortening the Dynamic Response Time and focusing time.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Extent of automation
If a VCM is used to move the lens for focusing, then automatic focusing is achieved, but the lens shakes during focusing which extends the Dynamic Response Time
Solution Approach 1:
A damping element is introduced as an intermediary component between the spring sheet and the lens holder/frame. This damping element absorbs vibrations and reduces lens shake during focusing, thereby shortening the Dynamic Response Time while maintaining automatic focusing capability
Solution Approach 2:
The damping element is pre-installed in the lens driving device to provide cushioning against vibrations before they occur. This prior cushioning approach prevents excessive lens shake during focusing operations, reducing the time required for the lens to stabilize at the target position
2Loss of time
If the lens is moved quickly to reduce focusing time, then the Dynamic Response Time is shortened, but lens shake increases
Solution Approach 1:
The damping element serves as a mediator that allows rapid lens movement while simultaneously suppressing vibrations. It absorbs the shock and oscillations generated during quick positioning, enabling fast focusing without compromising lens stability
Solution Approach 2:
The damping element changes the vibrational parameters of the lens system by introducing energy dissipation mechanisms. This allows the lens to reach its target position quickly while the damping element controls the decay of oscillations, maintaining stability during rapid movement
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
The use of damping elements effectively reduces lens shake and shortens the focusing time, enhancing the operational efficiency of the lens driving device.
Implementation Method 1
at least one damping element... connected between the arm portion of the spring sheet and at least one of the frame and lens holder
Implementation Method 2
The damping element is connected between the arm portion of the spring sheet and at least one of the frame and lens holder
Data Source
AI summary
An optical element driving mechanism is provided. The optical element driving mechanism includes a fixed part, a movable part, a driving assembly, and a damping element. The movable part is movable relative to the fixed part. The movable part holds an optical element with an optical axis. The driving assembly drives the movable part to move relative to the fixed part. The damping element inhibits shake generated by the movable part. The fixed part includes a fixed part recess corresponding to the damping element.