Camera Module Sensor-Shift Stabilization With Sliding Electrical Contacts
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Solution Overview
Problem
Camera apparatuses in electronic devices face significant power consumption and stabilization issues due to heavy lenses and impedance of photosensitive chip movement by flexible circuit boards, affecting image quality.
Innovation Solution
A camera apparatus design with a photosensitive chip on an inner frame base, movably disposed on an outer frame base, which is connected to a supporting circuit board via an inner and outer frame base, allowing the chip to move independently for stabilization without impedance, and includes a first driving mechanism for stabilization movements perpendicular to the lens axis.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the lens is made heavier to improve image quality, then the stabilization requirement increases, but the power consumption increases significantly
Solution Approach 1:
Instead of moving the heavy lens for stabilization, the patent inverts the approach by moving the photosensitive chip (a lighter component) while keeping the lens stationary. This is achieved through a movable platform that carries both the lens and photosensitive chip together, allowing the chip to be repositioned independently to correct image blur caused by camera shake, thereby reducing the power consumption of the stabilization mechanism.
Solution Approach 2:
The patent segments the camera module into a stationary lens portion and a movable photosensitive chip portion. The lens is fixed on the camera body while the photosensitive chip is mounted on a movable platform that can be independently actuated by a driving mechanism. This segmentation allows the stabilization function to be achieved by moving only the chip rather than the entire lens assembly, significantly reducing the mass that needs to be accelerated and the associated power consumption.
2Reliability
If the photosensitive chip is connected through a flexible circuit board, then electrical connection is achieved, but the movement of the chip is impeded affecting stabilization effect
Solution Approach 1:
The patent extracts the flexible circuit board from the electrical connection path between the movable photosensitive chip and the camera body. Instead, it uses a rigid circuit board that remains stationary on the camera body, with electrical connections established through contacts that slide along guide rails. This extraction eliminates the movement restriction imposed by the flexible circuit board while maintaining reliable electrical connectivity throughout the stabilization movement range.
Solution Approach 2:
The patent introduces guide rails and sliding contacts as intermediary elements between the movable photosensitive chip and the stationary circuit board. The guide rails provide a constrained path for movement, while the sliding contacts maintain continuous electrical connection during movement. This intermediary mechanism allows the chip to move freely for stabilization while ensuring uninterrupted electrical connectivity, resolving the contradiction between movement freedom and connection reliability.
3Measurement precision
If a motorized mechanism is used for zoom to achieve precise control, then zoom precision is improved, but the device complexity and cost increase
Solution Approach 1:
The patent replaces the traditional motorized zoom mechanism with a purely mechanical spring-based system. A spring is pre-loaded to provide the force needed for zooming, and the user simply needs to push or pull the lens barrel to initiate the zoom action. The spring stores and releases energy to drive the zoom movement, eliminating the need for motors, sensors, and complex control circuits while maintaining sufficient zoom precision for practical use.
Solution Approach 2:
The spring-based zoom mechanism is self-service in that it automatically provides the necessary force for zooming without requiring external power or complex control systems. The spring is pre-charged during assembly and autonomously provides the zoom force when triggered by user input, making the system simpler and more reliable while reducing manufacturing cost and device complexity.
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
The design reduces power consumption, enhances stabilization performance, and maintains image quality by enabling the photosensitive chip to move freely for stabilization, while also providing a sealed and protected environment, reducing weight and cost through a motorless zoom mechanism.
Implementation Method 1
the first driving mechanism is configured to drive the inner frame base to move
Data Source
AI summary
A camera apparatus and an electronic device are disposed. The disclosed camera apparatus includes a supporting circuit board, an outer frame base, an inner frame base, a photosensitive chip, a lens holder, a lens, and a first driving mechanism, where the outer frame base is disposed on the supporting circuit board, the lens holder is disposed on the outer frame base, the lens is disposed on the lens holder, the supporting circuit board is electrically connected to the photosensitive chip via the outer frame base and the inner frame base sequentially; the inner frame base is movably disposed on the outer frame base, the photosensitive chip is disposed on the inner frame base, the photosensitive chip is arranged opposite to the lens, the first driving mechanism is configured to drive the inner frame base to move.