Integrated Camera Module Aperture and Sensor Actuation Layout
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Solution Overview
Problem
Conventional optical systems in camera modules lack integration of a driving mechanism between the variable aperture stop and the image sensor actuating module, leading to an oversized design that fails to meet the requirements of high-end-specification electronic devices.
Innovation Solution
A camera module design incorporating an imaging lens, a variable through hole mechanism, an image sensor, an image sensor actuating module, and a flexible printed circuit, with specific coil and magnet arrangements to enable compact integration and miniaturization, allowing for adjustable light intake and image sensor movement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a variable aperture stop is arranged in the optical system to adjust depth of field and control light amount, then image quality is improved, but the overall size of the optical system becomes overly large due to lack of integration with the image sensor actuating module
Solution Approach 1:
The patent combines the variable aperture stop driving mechanism with the image sensor actuating module into a single integrated structure. The driving assembly includes a motor, transmission mechanism, and positioning mechanism that serve dual functions: controlling the variable aperture stop and moving the image sensor. This merging eliminates the need for separate driving mechanisms, thereby reducing the overall optical system size while maintaining the ability to adjust depth of field and control light amount for high image quality
Solution Approach 2:
The driving assembly is designed as a multi-functional unit that can simultaneously or independently control both the variable aperture stop and the image sensor position. The motor and transmission mechanism are configured to provide motion control for multiple components through shared mechanical elements, enabling one subsystem to perform multiple functions. This universality allows the optical system to achieve both aperture adjustment for depth of field control and image sensor actuation without proportionally increasing system volume
2Ease of manufacture
If a conventional optical system design is used without integrated driving mechanism, then design and manufacturing is simpler, but the system size becomes overly large and fails to meet high-end electronic device requirements
Solution Approach 1:
The patent integrates the variable aperture stop driving mechanism with the image sensor actuating module into a unified driving assembly. This merging creates a more complex but compact structure that meets the space constraints of high-end electronic devices. The integrated design maintains manufacturability by using standardized motor components and transmission mechanisms, while achieving the compact form factor required for modern portable devices with advanced camera systems
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 solution achieves a compact and efficient camera module that can adjust light intake and image sensor positioning, enhancing image quality and meeting the requirements of high-end electronic devices.
Implementation Method 1
The first driving mechanism includes at least one first coil and at least one first magnet that are disposed opposite to each other
Implementation Method 2
The second driving mechanism includes at least one second coil and at least one second magnet that are disposed opposite to each other
Implementation Method 3
The image sensor is configured to convert imaging light passing through the imaging lens into an image signal
Data Source
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AI summary
A camera module (1) includes an imaging lens (11) having an optical axis (110), a variable through hole mechanism (12), an image sensor (13), an image sensor actuating module (14) and a flexible printed circuit (15). The variable through hole mechanism (12) is disposed corresponding to the imaging lens (11) to adjust an amount of light into the imaging lens (11). The image sensor (13) is disposed on the optical axis (110) and is configured to convert imaging light passing through the imaging lens (11) into an image signal. The image sensor actuating module (14) is configured to move the image sensor (13). The variable through hole mechanism (12) and the image sensor actuating module (14) each have a coil disposed on the flexible printed circuit (15). The flexible printed circuit (15) is electrically connected to the variable through hole mechanism (12) and the image sensor actuating module (14).