Camera Module Light Blocking Layer Integration
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Solution Overview
Problem
Existing camera modules face challenges in miniaturization and manufacturing complexity due to the need for separate light blocking films for auto focusing, which increases weight and complicates the process.
Innovation Solution
A camera module with a light blocking layer integrated onto the outermost lens, using methods like painting or stamping, that moves with the lens for auto focusing, eliminating the need for a separate film and reducing lens weight.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a separate light blocking film is used for auto focusing, then the aperture can be formed on the outermost lens, but the manufacturing complexity increases and the lens weight increases
Solution Approach 1:
The light blocking layer is integrated directly onto the outermost lens, merging two previously separate components (lens and light blocking film) into one unified structure. This eliminates the need for separate film attachment processes and reduces the total weight of the moving lens assembly.
Solution Approach 2:
The light blocking function is extracted from a separate film component and incorporated directly into the lens structure through surface treatment or coating, removing the need for an independent light blocking film and its associated mounting hardware.
2Ease of manufacture
If a separate light blocking film is used for auto focusing, then the aperture can be formed, but the manufacturing process becomes more complex
Solution Approach 1:
The light blocking layer is integrated directly onto the outermost lens, merging two previously separate components (lens and light blocking film) into one unified structure. This eliminates the need for separate film attachment processes and reduces the total weight of the moving lens assembly.
3Reliability
If the light blocking layer is integrated onto the outermost lens, then the lens weight is reduced and auto focusing response is improved, but the manufacturing precision requirements increase
Solution Approach 1:
The light blocking layer is formed on the outermost lens during the lens manufacturing process itself, before the lens is assembled into the camera module. This preliminary formation ensures precise alignment and eliminates subsequent alignment operations, reducing manufacturing precision requirements during assembly.
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
Simplifies manufacturing, reduces lens weight, and improves auto focusing response characteristics by integrating the light blocking layer directly onto the outermost lens, enhancing operational accuracy and reliability.
Implementation Method 1
forming a light blocking layer by transcribing the light blocking layer on the lug using a surface energy difference; and forming the ring-shaped light blocking layer on an exposed outermost lens surface by contacting the ring-shaped light blocking layer transcribed on the lug to an outermost lens surface activated by an actuator and by transcribing the light blocking layer to the outermost lens surface using a surface energy difference
Data Source
AI summary
A camera module according to exemplary embodiments of the present disclosure includes a lens holder configured to support a plurality of sheets of lenses, an actuator configured to be arranged at an upper surface of the lens holder, an outermost lens configured to move along an optical axis by the actuator, and a light blocking layer configured to be positioned on a surface of the outermost lens.