Lens Module with Elastic Suspension for Autofocus and Anti-Shake
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Solution Overview
Problem
Existing lens modules in mobile electronic devices suffer from poor image sharpness due to shaking, as the lens assembly moves slightly in a plane perpendicular to the optical axis during shooting, affecting image clarity.
Innovation Solution
A lens module design that incorporates an elastic suspending assembly, focusing coils, and anti-shake coils to simultaneously achieve autofocus and anti-shake functionality, allowing the lens assembly to move along the optical axis for focusing and perpendicular to the axis for compensation, thereby maintaining image clarity during shaking.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the lens assembly is fixed in the fixing frame, then the structure is simple and stable, but the lens assembly cannot move to achieve focusing or compensate for shaking
Solution Approach 1:
The lens module is divided into independent functional components: the lens assembly, elastic suspending assembly, focusing coil assembly, and anti-shake coil assembly. Each component performs a specific function, allowing the lens assembly to move independently for both focusing and anti-shake operations without complicating the overall structure.
Solution Approach 2:
The elastic suspending assembly serves multiple functions: it suspends the lens assembly, enables focusing movement along the optical axis, and allows anti-shake movement perpendicular to the optical axis. The fixing frame provides both structural support and mounting positions for both focusing and anti-shake coils, achieving multi-functionality without increasing complexity.
2Reliability
If the lens assembly moves perpendicular to the optical axis to compensate for shaking, then image sharpness is maintained, but the structure becomes more complex
Solution Approach 1:
The elastic suspending assembly acts as an intermediary between the fixed fixing frame and the movable lens assembly. It provides the necessary compliance and support for perpendicular movements while maintaining a relatively simple structural configuration, enabling shake compensation without excessive complexity.
Solution Approach 2:
The lens assembly is designed to be dynamically movable in two independent directions: along the optical axis for focusing and perpendicular to the optical axis for anti-shake compensation. The elastic suspending assembly enables these dynamic movements while the fixed fixing frame provides stability, resolving the contradiction between reliability and complexity.
3Adaptability or versatility
If both focusing and anti-shake functions are integrated, then the lens module achieves comprehensive functionality, but the internal space becomes more constrained
Solution Approach 1:
The design separates the two functions into different spatial dimensions: focusing movement occurs along the optical axis (vertical dimension), while anti-shake compensation occurs perpendicular to the optical axis (horizontal dimension). This dimensional separation allows both functions to coexist within the same lens module without excessive space constraints.
Solution Approach 2:
The focusing coil and anti-shake coil are arranged in a nested or adjacent configuration within the fixing frame, optimizing space utilization. The lens assembly is suspended within the fixing frame, with both coil systems integrated into the same structural envelope, achieving comprehensive functionality with minimized volume.
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 lens module effectively supports both focusing and anti-shake movements, ensuring clear imaging by suspending the lens assembly and using magnetic loops to drive precise movements, resulting in high-definition images while optimizing internal space.
Implementation Method 1
an elastic suspending assembly connected between the fixing frame and the lens assembly to suspend the lens assembly within the fixing frame
Implementation Method 2
at least one focusing coil arranged on the fixing frame and configured to cooperate with the at least one first magnet to drive the lens assembly to move along a first direction in which an optical axis extends
Implementation Method 3
at least one anti-shake coil arranged on the fixing frame and configured to cooperate with the at least one second magnet to drive the lens assembly to move along a second direction perpendicular to the optical axis to compensate for shaking of the lens assembly
Data Source
AI summary
A lens module is provided. The lens module includes: a fixing frame; a lens assembly arranged in the fixing frame; an elastic suspending assembly connected between the fixing frame and the lens assembly to suspend the lens assembly within the fixing frame; a first magnet arranged on the lens assembly; a focusing coil arranged on the fixing frame and configured to cooperate with the first magnet to drive the lens assembly to move along an optical axis direction; a second magnet arranged on the lens assembly; and an anti-shake coil arranged on the fixing frame and configured to cooperate with the second magnet to drive the lens assembly to move along a second direction perpendicular to the optical axis to compensate for shaking of the lens assembly in a direction perpendicular to the optical axis. With the invention, the shaking of the lens assembly in the fixing frame is compensated.