Camera Module Lens Barrel Alignment Fixing Member
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The existing camera module design suffers from gaps between the lens barrel and lens housing due to screw thread tolerances, leading to lens barrel shaking and drooping, which causes resolution degradation and reduces productivity during mass production.
Innovation Solution
Incorporating a fixing member, such as an elastic plate or spring, between the lens barrel and lens housing to prevent displacement and apply pressure, ensuring proper alignment and stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If screw threads are formed in the lens barrel and lens housing for assembly, then the lens barrel can be inserted into the lens housing, but gaps are formed between them due to tolerances causing lens barrel shaking and resolution degradation
Solution Approach 1:
A fixing member is introduced as an intermediary component between the lens barrel and lens housing. This fixing member includes a fixing protrusion that fits into a fixing groove, providing an additional constraint mechanism that compensates for gaps formed by screw thread tolerances and prevents lens barrel shaking while maintaining ease of assembly
Solution Approach 2:
The patent adds a radial constraint dimension by introducing the fixing protrusion-groove mechanism perpendicular to the axial insertion direction. This dimensional addition addresses the gap issue without compromising the original screw thread assembly method
2Productivity
If screw threads with tolerances are used to assemble the lens barrel and lens housing, then mass production is enabled, but the lens barrel droops downward due to weight causing resolution degradation and imbalance
Solution Approach 1:
The fixing member is pre-installed on the lens housing before lens barrel insertion. The fixing protrusion-groove mechanism is designed in advance to counteract the downward drooping force caused by lens barrel weight, preventing stability issues before they occur during operation
Solution Approach 2:
The fixing member serves as a mediator that transfers and distributes the lens barrel weight load, preventing direct stress on the screw threads and maintaining stability during mass production operations
3Manufacturing precision
If gaps between lens barrel and lens housing are adjusted during mass production to prevent shaking and drooping, then resolution stability improves, but productivity decreases
Solution Approach 1:
The fixing member with its precisely engineered protrusion-groove interface is pre-manufactured and pre-positioned on the lens housing before assembly. This preliminary action ensures proper alignment and gap control is built into the component design itself, eliminating the need for time-consuming post-assembly adjustments during mass production
Solution Approach 2:
The fixing member acts as a precision intermediary that inherently maintains the correct gap between lens barrel and lens housing through its geometric design, removing the need for manual adjustment operations and thereby preserving mass production efficiency
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
This solution reduces gaps and prevents lens barrel shaking and drooping, maintaining image resolution and improving mass production efficiency by ensuring precise alignment and stability.
Implementation Method 1
The fixing member may be an elastic member formed by sequentially stacking a plurality of plates made of an elastic material
Implementation Method 2
a fixing member provided between the rear cap and the rear surface of the lens barrel for applying pressure to the lens barrel
Data Source
AI summary
An embodiment relates to a camera module comprising: a lens module which generates an optical image of an object; a circuit board unit which processes the optical image generated by the lens module and has elements mounted on first and second surfaces thereof; and a cable unit which supplies power to the circuit board unit, wherein the circuit board unit comprises a connector coupled to the cable unit, and wherein the camera module is arranged between the connector and the circuit board unit and fixes the connector on the circuit board unit.