Lens Module Ball Guide Mechanism for Stable Autofocus
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Solution Overview
Problem
The movement stability of lens modules in prior art is low during auto focus and optical image stabilization, and the mechanical structure is complex, necessitating a more stable and simplified solution.
Innovation Solution
A lens module design featuring a focusing support frame with guide slots and balls, elastic pieces, and magnetic coils for precise movement along optical and perpendicular axes, along with anti-shake mechanisms to enhance stability and reduce complexity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a complex mechanical structure is used to achieve auto focus and optical image stabilization, then the lens can perform these functions, but the movement stability of the lens is low and the structure becomes more complicated
Solution Approach 1:
The patent divides the mechanical structure into separate functional modules: a focusing support frame for auto-focus, a second base for optical image stabilization, and guide mechanisms with balls for movement control. This segmentation allows each component to perform its specific function independently, improving stability while reducing overall complexity through modular design
Solution Approach 2:
The patent introduces guide mechanisms with balls as intermediary elements between the focusing support frame and the bases. These balls act as mediators that enable precise movement control along guide slots, improving movement stability without requiring complex mechanical linkages
2Reliability
If guide slots with balls are used to control lens movement, then movement stability improves, but the device complexity increases
Solution Approach 1:
The patent replaces complex mechanical movement control systems with a simpler ball-and-guide-slot mechanism. The balls rolling along precisely formed guide slots provide stable movement control with minimal mechanical complexity, substituting traditional complex linkages and joints
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 design achieves stable lens movement for auto focus and optical image stabilization, reducing mechanical complexity and improving imaging quality by utilizing guide mechanisms and elastic deformation for precise control.
Implementation Method 1
a first ball provided between the first guide slot and the second guide slot
Implementation Method 2
a second ball provided between the third guide slot and the fourth guide slot
Implementation Method 3
a first elastic piece connected between the focusing support frame and the first base, the first elastic piece generates elastic deformation only when the focusing support frame moves relative to the first base and the second base along the optical axis direction of the lens
Implementation Method 4
a second elastic piece connected between the first base and the second base, the second elastic piece generates elastic deformation only when the focusing support frame and the first base move together relative to the second base along a direction perpendicular to the lens optical axis
Data Source
AI summary
The invention provides a lens module having a housing, and a focusing support frame, a first base, a second base, and a lens. The focusing support frame is provided with three first guide slots, and the first base is provided with three second guide slots. A first ball is provided between the first guide slot and the second guide slot. The first base is provided with three third guide slots, the second base is provided with three fourth guide slots, and a second ball is provided between the third guide slot and the fourth guide slot. Through stacked focusing support frame and relative movement between the first base and the second base, auto focus and optical image stabilization can be realized. The stable lens movement can be realized through the least number of guide mechanisms and the simplest structure.