Multi-Directional Camera Actuator Damper for Shock and Wear
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Solution Overview
Problem
The increasing weight and size of camera module lenses in mobile devices lead to enhanced physical impacts on internal actuator components, causing damage, abrasion, and the generation of foreign substances, which can result in malfunction and reduced image quality due to increased collisions and shaking.
Innovation Solution
A multi-directional damper is integrated into the actuator's design, allowing the carrier to move in optical axis and perpendicular directions, with a damper structure extending in multiple directions to absorb and distribute external shocks, minimizing physical collisions and wear between internal components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If the lens weight and size are increased to enhance camera module specifications, then the imaging performance is improved, but the physical impact on internal actuator components increases dramatically
Solution Approach 1:
The patent applies beforehand cushioning by providing a damper structure that extends in multiple directions (optical axis direction and perpendicular directions) to cushion external impacts before they reach the internal actuator components. The damper is positioned to face the direction where external impact is likely to occur, creating a protective barrier that absorbs shock waves and prevents direct transmission to sensitive components.
Solution Approach 2:
The damper acts as an intermediary element between the external environment and the internal actuator components. It mediates the impact forces by absorbing and dissipating energy through its multi-directional structure, preventing the full force of external impacts from reaching the lens, carrier, and other internal components.
2Length of moving object
If the actuator moving distance (stroke) is increased to improve focusing and stabilization range, then the functional performance is enhanced, but the amount of impact between internal components increases
Solution Approach 1:
The multi-directional damper structure provides beforehand cushioning for the extended moving distance scenario. As the carrier travels longer distances in optical axis and perpendicular directions, the damper remains positioned to cushion impacts from various angles, ensuring protection throughout the full range of motion rather than just at specific positions.
3Manufacturing precision
If internal components are made with heterogeneous materials and complex structures to achieve precise AF and OIS functions, then the functional precision is improved, but the components become more susceptible to damage and abrasion from impact
Solution Approach 1:
The damper serves as a protective intermediary that shields the precisely manufactured heterogeneous components from impact forces. By absorbing and dissipating shock energy before it reaches the complex internal components, the damper prevents damage and abrasion that would otherwise compromise the reliability of these precision parts.
Solution Approach 2:
The damper provides beforehand cushioning specifically tailored to protect the heterogeneous materials and complex structures used in AF and OIS components. The multi-directional design ensures that regardless of the impact direction, the cushioning effect occurs before the force can damage the precision-engineered components.
4Adaptability or versatility
If the actuator components are subjected to repeated external shocks and shaking, then the operational range is expanded, but the driving precision decreases due to wear and generated foreign substances
Solution Approach 1:
The damper provides continuous beforehand cushioning during repeated external shocks and shaking operations. By consistently absorbing impact forces before they reach the internal components, the damper prevents cumulative wear and foreign substance generation that would otherwise degrade driving precision over time, allowing the actuator to maintain precision across its full operational range.
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 damper significantly reduces the occurrence of damage and abrasion between internal components, enhancing the driving precision of the actuator and minimizing the generation of bad pixels, thereby improving image quality by effectively relieving external shocks in all relevant directions.
Implementation Method 1
a damper provided to the carrier or the base and configured to have a shape extending in two or more directions among an optical axis direction, a first direction perpendicular to the optical axis and a second direction perpendicular to the optical axis and the first direction
Data Source
AI summary
An actuator for a camera according to an embodiment includes a base having an inner space formed therein, a carrier provided inside the base and configured to move in at least one direction among an optical axis direction, a first direction perpendicular to the optical axis and a second direction perpendicular to the optical axis and the first direction; and a damper provided to the carrier or the base and configured to have a shape extending in two or more directions among the optical axis direction, the first direction and the second direction.