Auto-Focusing Lens Module with Integrated Coil Regulating Structure
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Solution Overview
Problem
Conventional optical lens modules with auto-focusing mechanisms face precision issues due to the assembly of the carrier and lens barrel, affecting the overall performance and stability of the auto-focusing function.
Innovation Solution
A lens module design featuring a plastic lens barrel with a coil regulating structure, including plane surfaces and protruding structures, integrated with an auto-focusing mechanism that utilizes a polygon coil and field magnet assembly for enhanced stability and precision, allowing for stable assembly and efficient auto-focusing capabilities.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the carrier and lens barrel are assembled separately, then the auto-focusing function can be provided, but the precision of the optical lens module is affected
Solution Approach 1:
The patent integrates the carrier and lens barrel into a single integrated structure. The carrier is formed as an integral part of the lens barrel, eliminating the need for separate assembly. This merging of components ensures precise relative positioning between the coil, magnet assembly, and lens elements, thereby maintaining high manufacturing precision while still enabling the auto-focusing function through the integrated structure's ability to move relative to the housing.
2Extent of automation
If the coil is assembled on the carrier, then the auto-focusing mechanism can be formed, but the precision is affected due to assembly tolerances
Solution Approach 1:
The coil, magnet assembly, and carrier are integrated into a single molded structure. The coil is formed as an integral part of the carrier during the molding process, eliminating separate assembly steps. This integration removes assembly tolerances that would otherwise affect precision, while the resulting integrated carrier-coil-magnet assembly still provides full auto-focusing functionality through electromagnetic actuation.
3Reliability
If multiple components are assembled together, then the auto-focusing mechanism can be provided, but the assembly process becomes complex
Solution Approach 1:
The patent combines multiple components (carrier, coil, magnet assembly, and lens barrel elements) into integrated molded structures. The carrier is molded as a single piece with the coil and magnet assembly integrated, and this entire assembly is then housed within the lens barrel. This reduces the number of separate assembly steps while maintaining the auto-focusing mechanism's reliability through the precision of the integrated structure.
Solution Approach 2:
The patent divides the lens module into distinct functional modules: the integrated carrier-coil-magnet assembly and the lens barrel housing. This segmentation allows each module to be manufactured and tested separately, then assembled together, simplifying the overall manufacturing process while maintaining reliability through modular design.
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 improves the precision and stability of the auto-focusing mechanism, simplifies the assembly process, and enhances the electromagnetic actuation efficiency, resulting in a compact and reliable lens module suitable for mobile terminals.
Implementation Method 1
The coil is polygon. The coil regulating structure is located on the outer side portion of the plastic lens barrel, and is integrated with the plastic lens barrel, wherein the coil is connected and positioned to the coil regulating structure
Data Source
AI summary
A lens module with auto-focusing mechanism includes a plastic lens barrel, a lens assembly, an auto-focusing mechanism and a coil regulating structure. The plastic lens barrel includes a front end portion, a rear end portion and an outer side portion, wherein the front end portion includes a front end surface and a front end hole, the rear end portion includes a rear end opening, the outer side portion connects the front end portion and the rear end portion. The lens assembly is disposed in the plastic lens barrel, and includes a plurality of lens elements. The auto-focusing mechanism is connected to the plastic lens barrel, and includes a coil being polygon. The coil regulating structure is located on the outer side portion of the plastic lens barrel, and is integrated with the plastic lens barrel, wherein the coil is connected and positioned to the coil regulating structure.