Camera Module Lid Glass Protrusion Foreign Body Protection
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Solution Overview
Problem
Existing camera modules are susceptible to foreign bodies blocking light due to their design, which limits the quality and structure of the camera module, as seen in Patent Literature 1 and 2, where foreign bodies can obstruct the optical filter or glass substrate, and attempts to mitigate this by placing the glass substrate further away from the image pickup element restrict the module's shape and arrangement.
Innovation Solution
A camera module design featuring a translucent member protruding from the housing section toward the lens, with a fixed section and overhanging part to cover the translucent member, creating a complex path for foreign bodies and maintaining the image pickup element's distance from potential obstructions, allowing for a high-quality configuration with reduced foreign body influence.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the glass substrate is placed at a longer distance from the image pickup element to resist foreign bodies, then the resistance to foreign bodies is improved, but the shape and arrangement of other structures are limited
Solution Approach 1:
The patent introduces a new spatial dimension by making the glass substrate protrude from the sensor cover toward the image pickup lens. This vertical protrusion creates a protective barrier that prevents foreign bodies from reaching the image pickup element while maintaining flexibility in the overall module arrangement. The glass substrate extends in the optical axis direction rather than simply increasing horizontal distance, thus protecting against foreign bodies without constraining the lateral arrangement of other components.
Solution Approach 2:
The protruding glass substrate acts as an intermediary protective element between the external environment and the image pickup element. It serves as a physical barrier that intercepts foreign bodies before they can reach the sensor, while its transparent nature allows light to pass through uninterrupted. This intermediary structure provides protection without directly contacting or interfering with the image pickup element's operational function.
2Reliability
If the glass substrate protrudes toward the image pickup lens to prevent foreign bodies, then the protection against foreign bodies is improved, but the placement of driving mechanism is constrained
Solution Approach 1:
The patent segments the camera module into distinct functional zones: the protruding glass substrate forms a protective foreground, the image pickup element occupies the mid-ground, and the driving mechanism is positioned in the background. This spatial segmentation allows each component to fulfill its specific function independently - the glass substrate provides protection, the element captures images, and the mechanism enables focus adjustment - without interfering with others.
Solution Approach 2:
The driving mechanism is nested within the sensor cover structure, utilizing the space created by the protruding glass substrate. The sensor cover housing accommodates both the protective glass substrate and the driving mechanism, with the glass substrate extending forward and the mechanism positioned rearward. This nested arrangement allows compact integration of multiple functions within a single structural envelope.
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 design effectively reduces the impact of foreign bodies on light reaching the image pickup element by creating a complex path for them and allows for a more compact and efficient driving mechanism placement, enhancing the camera module's quality and functionality.
Implementation Method 1
a translucent member, fixed on the housing section, which closes the opening
Data Source
AI summary
In a camera module (51), a lid glass (15) protrudes from a sensor cover (14) toward an image pickup lens (1), and a base section (9) includes an overhanging part (9b) overhanging in such a manner as to cover part of the lid glass (15).