Piezoelectric Camera Actuator with Threaded Lens Holder
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Solution Overview
Problem
High-end mobile devices require miniature cameras with superior performance and high image quality while minimizing space and energy consumption, necessitating innovative camera component designs that translate rotational motion into optical axis motion efficiently.
Innovation Solution
The camera component includes an annular lens holder with a threaded interior surface for the optics barrel, complementing its exterior threads, and a piezoelectric motor with rotational and locking motion actuators to precisely adjust the optics barrel's position, enabling efficient motion along the optical axis.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If traditional camera components are used, then basic imaging function is achieved, but device size and energy consumption increase
Solution Approach 1:
The optics barrel is nested within the lens holder component, with the threaded exterior surface of the barrel fitting into the threaded interior surface of the holder. This nested configuration allows compact integration of multiple functional elements (focus adjustment mechanism, optics mounting, positioning features) within a minimized volume, directly addressing the contradiction between reducing camera module size and maintaining reliable imaging function
Solution Approach 2:
The lens holder component serves multiple functions: it provides structural support for the optics, enables focus adjustment through threaded rotation, positions the optics barrel via engagement features, and integrates mounting interfaces. This multi-functionality consolidates several components into one, reducing overall camera module volume while ensuring reliable operation
2Reliability
If focus adjustment mechanism is added, then image quality is improved, but device complexity increases
Solution Approach 1:
The focus adjustment mechanism is merged with the lens holder component itself. The threaded interior surface of the holder and threaded exterior surface of the optics barrel form an integrated focus adjustment system, eliminating the need for separate focus adjustment mechanisms and reducing overall device complexity while maintaining image quality
Solution Approach 2:
The optics barrel's own threaded exterior surface serves as both the mounting interface and the focus adjustment interface. By using the barrel's structure itself for focus adjustment rather than adding external mechanisms, the design reduces complexity while enabling quality focus control
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 design enhances image quality and reduces space and energy usage by effectively translating rotational motion into optical axis motion, improving camera performance in compact mobile devices.
Implementation Method 1
a piezoelectric motor fixedly mounted to a base component
Implementation Method 2
an annular lens holder component having a threaded interior surface for translating rotational motion of an optics barrel component into motion along an optical axis
Data Source
AI summary
In some embodiments, a camera component includes an annular lens holder component having a threaded interior surface for translating rotational motion of an optics barrel component into motion along an optical axis of the optics barrel component. In some embodiments, the threaded interior surface of the lens holder component includes one or more threads complementary to one or more threads of a threaded exterior surface of an optics barrel component. In some embodiments, the optics barrel component is movably mounted on the threads of the threaded interior surface of the lens holder component for rotational motion within the lens holder component. In some embodiments, the optics barrel has a threaded exterior surface with one or more threads complementary to the threads of the threaded interior surface of the lens holder component. Some embodiments include a piezoelectric motor fixedly mounted to a base component.