Lens Barrel and Diaphragm Assembly for Easier Camera Module Integration
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Solution Overview
Problem
Existing camera modules face challenges in manufacturing cost and assembly complexity due to the electrical connection and diaphragm placement between lens groups, which increases the difficulty in integrating auto focus and optical image stabilization functions.
Innovation Solution
A camera module design with a diaphragm set movably supported inside a housing, utilizing a first and second drive unit with integrated control units and shared terminals for auto focusing and diaphragm control, and a lens barrel assembly system with coupling holes and grooves for easy lens and diaphragm integration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the diaphragm is located between the front lens and the rear lens among the lens groups, then the electrical connection with the main board can be continuously maintained with mobility along the optical axis, but the manufacturing cost of the total module increases
Solution Approach 1:
The patent combines the diaphragm assembly with the lens barrel structure, integrating the diaphragm drive unit and electrical connection components into a single unified assembly. This merging eliminates the need for separate electrical connection paths between the diaphragm and main board, reducing manufacturing complexity and cost while maintaining electrical continuity during optical axis movement.
2Reliability
If the diaphragm is located between the front lens and the rear lens among the lens groups, then the electrical connection with the main board is continuously maintained, but there is a lot of difficulty in assembling
Solution Approach 1:
The patent segments the camera module into distinct functional assemblies: the lens barrel assembly (containing front lens, diaphragm, and drive unit), the rear lens assembly, and the main board assembly. Each assembly can be independently manufactured and tested, then assembled together. The diaphragm is integrated into the lens barrel assembly with its drive unit, allowing the entire assembly to move together along the optical axis while maintaining electrical connections, significantly simplifying the overall assembly process.
3Adaptability or versatility
If a separate actuator is used to adjust the degree of opening of the lens, then the diaphragm function is achieved, but the device complexity increases
Solution Approach 1:
The patent merges the diaphragm drive unit with the lens barrel structure, creating an integrated assembly where the drive unit, diaphragm, and lens components work together as a unified system. This integration reduces the number of separate actuators and control mechanisms needed, simplifying the overall device complexity while maintaining full diaphragm functionality for adjusting the degree of opening.
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
Reduces manufacturing costs and simplifies assembly by minimizing external terminals and facilitating easy integration of diaphragms and lenses, enhancing the convenience and efficiency of camera module production.
Implementation Method 1
a first drive unit comprising a first coil and a first magnet which enable the lens barrel and the diaphragm set to move together in the optical axis direction
Implementation Method 2
the diaphragm set has a second drive unit for driving the diaphragms disposed therein, and the plurality of terminals are also connected to the second drive unit
Data Source
AI summary
The present invention comprises: a base; a housing disposed at one side of the base; a lens barrel disposed inside the housing; a cover disposed at one side of the housing; a first substrate disposed at the other side of the base; an image sensor that is installed on the first substrate, and disposed below the lens barrel; a diaphragm set that is movably supported inside the housing and that adjusts the amount of light incident to the lens barrel; a first drive unit comprising a first coil and a first magnet that enable the lens barrel and the diaphragm set to move together in the optical axis direction; and a second substrate that is attached to the housing and comprises a plurality of terminals which protrude to the outside as a result of the drive of the first drive unit, wherein the diaphragm set has a second drive unit for driving the diaphragms disposed therein, and the terminals are also connected to the second drive unit.