Image Sensor Suspension Structure for Large-Lens Camera Stabilization
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Solution Overview
Problem
The increasing pixelation in camera devices leads to larger lens diameters, resulting in increased weight and difficulty in securing electromagnetic force to move the lens within a limited space for image stabilization, making it challenging to effectively stabilize images due to user movement.
Innovation Solution
A camera device design that moves the image sensor in three axes (x-axis shift, y-axis shift, and z-axis rolling) using a connecting substrate and a wing structure to facilitate image stabilization, while maintaining a sealing and protective structure to prevent foreign objects and external impacts.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the lens diameter is increased to improve image quality through high pixelation, then the image quality is improved, but the weight of the lens increases and it becomes difficult to secure electromagnetic force to move the lens within limited space
Solution Approach 1:
Instead of moving the lens for image stabilization, the patent inverts the approach by moving the image sensor in the opposite direction to compensate for image shake. This allows the heavier lens to remain stationary while the sensor moves, resolving the contradiction between lens weight and stabilization capability
Solution Approach 2:
The patent replaces the mechanical lens moving system with an electromagnetic driving system that moves the image sensor. The driving magnet and coil assembly provides electromagnetic force to move the sensor along x, y, and z axes, substituting mechanical lens movement with electromagnetic sensor actuation
2Measurement precision
If the lens diameter is increased to improve image quality, then the image quality is improved, but it becomes difficult to secure electromagnetic force to move the lens within limited space
Solution Approach 1:
The patent inverts the stabilization approach by moving the image sensor instead of the lens. This allows the larger diameter lens to be accommodated in the limited space while the sensor, which requires movement for stabilization, is positioned where it can be actuated by the electromagnetic driving system
Solution Approach 2:
The patent enables three-dimensional movement of the image sensor along x-axis, y-axis, and z-axis directions. This multi-dimensional movement capability allows effective image stabilization while accommodating the larger lens diameter within the limited camera module space
3Reliability
If the image sensor is moved in three axes for image stabilization, then image stabilization is improved, but the device complexity increases
Solution Approach 1:
The patent merges the image sensor assembly with the connecting substrate and housing structures. The wing parts of the housing are integrated to form a sealing cavity that accommodates the sensor movement, combining multiple functions (support, sealing, and movement accommodation) into unified structures to reduce overall device complexity
Solution Approach 2:
The housing wing parts serve multiple functions: they provide structural support for the image sensor, create sealing cavities to prevent foreign object entry, and guide the sensor movement along x, y, and z axes. This multi-functionality reduces the need for separate components, thereby reducing device complexity while maintaining stabilization reliability
4Object-affected harmful factors
If a sealing structure is added to prevent foreign objects and external impacts, then protection is improved, but the device complexity increases
Solution Approach 1:
The sealing function is merged into the housing wing parts that also provide structural support and movement guidance. The wing parts form a sealing cavity between them and the cover member, integrating protection functionality into existing structural elements without adding separate sealing components
Solution Approach 2:
The image sensor assembly is nested within the sealing cavity formed by the housing wing parts and cover member. This nested arrangement provides protection from foreign objects and impacts while maintaining a compact structure, as the sensor moves within the protected cavity rather than requiring external protective mechanisms
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 ensures effective image stabilization, secures maximum electromagnetic force for autofocus within limited space, and enhances design freedom for the camera device, preventing unintended collisions and improving the sealing and impact protection.
Implementation Method 1
it is difficult to secure electromagnetic force to move the lens within a limited space
Implementation Method 2
secures maximum electromagnetic force for autofocus within limited space
Data Source
AI summary
The present embodiment relates to a camera device, comprising: a base; a cover member disposed on the base; a housing disposed between the base and the cover member, an image sensor disposed within the base; a connecting substrate that movably supports the image sensor, and a spacing member disposed between the connecting substrate and a side plate of the cover member in a direction perpendicular to an optical axis direction.