Camera Device OIS Mechanism for Miniaturization
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Solution Overview
Problem
Existing camera devices in portable electronic devices face challenges in achieving a low-height, miniaturized structure due to large driving amounts and weights of camera shake correction mechanisms, integrated with auto-focus mechanisms, leading to difficulties in assembly and structural stability, and tilt errors between infrared cut-off filters and sensors.
Innovation Solution
A camera device design that includes a housing with an anti-shake mechanism featuring a first movable part, a fixing part, a coil, a magnet, a filter, and a photosensitive sensor, where the coil and magnet are spaced to drive the movable part orthogonally, and an auto-focus mechanism with separate components to reduce size and improve image quality, using a metal housing for heat conduction and reducing tilt errors.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If the camera shake correction mechanism is integrated with the auto-focus mechanism, then the structural stability is improved, but the device complexity and assembly difficulty increase
Solution Approach 1:
The patent divides the camera module into separate functional components: the auto-focus mechanism (with first coil and first magnet) and the camera shake correction mechanism (with second coil and second magnet) are independently configured. This segmentation allows each mechanism to operate without interfering with the other, simplifying assembly while maintaining structural stability through dedicated mounting structures for each component.
2Adaptability or versatility
If the camera shake correction mechanism uses a long total optical length lens, then the photographing capability is improved, but the driving amount and weight increase making miniaturization difficult
Solution Approach 1:
The patent implements camera shake correction by moving the lens carrier in a plane orthogonal to the optical axis direction, rather than moving the entire camera module. This dimensional approach allows for effective shake correction with reduced driving amount and weight, enabling miniaturization while maintaining photographing capability with medium-telephoto lenses.
3Adaptability or versatility
If the infrared cut-off filter is provided separately from the OIS driving frame, then the filter functionality is improved, but the tilt error between the filter and sensor increases
Solution Approach 1:
The patent integrates the infrared cut-off filter directly onto the OIS driving frame (lens carrier), combining the filter functionality with the shake correction mechanism. This merging ensures that the filter moves synchronously with the lens carrier during OIS operation, eliminating relative tilt errors between the filter and sensor while maintaining full filter functionality.
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 achieves miniaturization, simplifies components, reduces occupied space, and improves camera image quality by enabling low-height and efficient anti-shake functionality while enhancing structural stability and heat dissipation.
Implementation Method 1
The first coil, the filter and the photosensitive sensor are fixed to the first movable part. The first magnet is fixed to the first fixing part, and the first magnet and the first coil are spaced apart from each other to drive the first movable part to reciprocate inn a plane orthogonal to an optical axis direction
Implementation Method 2
using a metal housing for heat conduction and reducing tilt errors
Data Source
AI summary
Provided is a camera device, including a housing having an accommodating cavity; a lens placed in the accommodating cavity; and an anti-shake mechanism placed in the accommodating cavity and including a first movable part, a first fixing part, a first coil, a first magnet, a filter, and a photosensitive sensor. The first coil, the filter and the photosensitive sensor are fixed to the first movable part. The first magnet is fixed to the first fixing part, and the first magnet and the first coil are spaced apart from each other to drive the first movable part to reciprocate inn a plane orthogonal to an optical axis direction. Compared with the related art, low-height and miniaturization of the camera device can be achieved, the components are simplified and the size is reduced, the occupied space of the components is reduced and the quality of the camera image is improved.