Impact Absorber for Camera Actuator Vibration Damping
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Solution Overview
Problem
Small form factor cameras face challenges in achieving high image quality due to unwanted vibration and parasitic motion, which existing autofocus and optical image stabilization mechanisms struggle to effectively mitigate.
Innovation Solution
Incorporating an impact absorption member with multiple layers of varying hardness and a camera actuator with a lens carrier moveably mounted by leaf springs, along with a spacer, to prevent contact between the camera cover and lens carrier, thereby providing vibration damping and impact absorption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If the lens carrier is rigidly mounted to the camera cover, then structural stability is improved, but vibration and parasitic motion increase
Solution Approach 1:
The patent uses flexible leaf springs to mount the lens carrier to the camera cover, replacing rigid mechanical connections with elastic elements that provide both structural support and vibration isolation
Solution Approach 2:
The patent introduces an impact absorption member as an intermediary element between the lens carrier and camera cover, which absorbs impact forces and prevents direct transmission of vibrations to the lens carrier
2Object-affected harmful factors
If the lens carrier is moveably mounted with leaf springs, then vibration damping is improved, but position accuracy may deteriorate
Solution Approach 1:
The patent applies different hardness properties to different parts of the impact absorption member, with a harder outer layer providing structural stability and a softer inner layer providing vibration damping, thus maintaining both position accuracy and vibration reduction
3Device complexity
If a single-layer impact absorption member is used, then device complexity is reduced, but impact absorption effectiveness deteriorates
Solution Approach 1:
The patent employs a multi-layer composite structure for the impact absorption member, combining materials with different hardness properties to achieve superior impact absorption and vibration damping performance
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 configuration enhances the position accuracy of miniature actuation mechanisms, reduces parasitic motion, and improves image quality by effectively damping vibrations and absorbing impacts within small form factor cameras.
Implementation Method 1
an impact absorption member placed within the camera cover to prevent contact between the camera cover and the lens carrier
Implementation Method 2
a camera actuator with a lens carrier moveably mounted by leaf springs
Data Source
AI summary
In some embodiments, a camera includes an optical package, a camera actuator for moving the optical package, a camera cover, and an impact absorption member to prevent contact between the camera cover and the lens carrier. In some embodiments, the camera actuator includes a lens carrier moveably mounted to a camera cover.