Lens Driving Module with Embedded Electrical Terminals
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Solution Overview
Problem
Conventional lens driving modules are complex, large in size, and have high power consumption due to their intricate construction, making them difficult to assemble and costly to manufacture, while also being inefficient in terms of size and power usage.
Innovation Solution
A compact lens driving module design featuring a voice coil motor with a simplified assembly process, utilizing a base with exposed electrical terminals and spring sheets to support the lens holder, allowing for efficient energy conversion and reduced size through the use of a driving assembly with magnetic elements and a coil, and an electrical terminal configuration with abutting surfaces for secure positioning during assembly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional driving modules use complex driving members such as stepper motors, ultrasonic motors, or piezoelectric actuators to generate driving power, then the driving function is reliable, but the device complexity increases and manufacturing cost rises
Solution Approach 1:
The patent replaces complex mechanical driving members (stepper motors, ultrasonic motors, piezoelectric actuators) with a simplified electromagnetic driving assembly consisting of a magnet, coil, and yoke. This substitution uses electromagnetic force directly to drive the lens holder, eliminating the need for complex mechanical transmission elements while maintaining reliable driving function for auto-focus and auto-zoom controls.
2Power
If conventional driving modules include multiple transmission elements to transmit driving power, then the driving power transmission is effective, but the device complexity increases and assembly difficulty rises
Solution Approach 1:
The patent extracts and eliminates unnecessary transmission elements from the driving system. The electromagnetic driving assembly generates driving force directly at the lens holder location, removing intermediate transmission components such as gears, belts, or linkages that would otherwise be required to transmit power from a separate motor to the lens holder.
Solution Approach 2:
The patent merges the driving function and the lens holder support function into a single integrated electromagnetic driving assembly. The magnet, coil, and yoke are positioned to directly interact with the lens holder, combining what were previously separate functions (power generation and power transmission) into one unified structure.
3Reliability
If conventional driving modules use complex construction to ensure driving function, then the driving reliability is maintained, but the module size increases
Solution Approach 1:
The patent employs a compact nested arrangement where the magnet, coil, and yoke are tightly integrated in a layered structure. The magnet and yoke are positioned on opposite sides of the coil, with all components nested within a minimal spatial envelope that directly engages the lens holder, achieving reliable driving force generation in a compact 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 solution results in a smaller, more efficient lens driving module with reduced manufacturing costs and improved structural strength, enabling effective auto-focus and auto-zoom controls with enhanced reliability and reduced power consumption.
Implementation Method 1
a driving assembly configured to drive the movement of the lens holder relative to the base... a compact lens driving module design featuring a voice coil motor with a simplified assembly process, utilizing a base with exposed electrical terminals and spring sheets to support the lens holder, allowing for efficient energy conversion
Data Source
AI summary
An optical element driving module is provided, including a holder, a base, a driving assembly, and at least one electrical terminal. The holder is used for supporting the optical element having an optical axis. The base has a light incident side surface and a light emitting side surface. The driving assembly is configured to drive the movement of the holder relative to the base. The electrical terminal is electrically connected to an outer circuit and the driving assembly, wherein a portion of the electrical terminal is buried in the base, and the electrical terminal includes a first segment exposed by the light emitting side surface, a second segment exposed by the light emitting side surface, and a connecting segment. The first segment is connected to the second segment through the connecting segment, and the connecting segment is buried in the base and is not exposed from the base.