Imaging Element Anti-Vibration Mechanism for Camera
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Solution Overview
Problem
Conventional camera devices with lens driving mechanisms face challenges in miniaturization and thinness due to the integration of autofocus and hand tremor correction mechanisms, which also complicate design and assembly, and are prone to inherent vibrations and lens miscentering.
Innovation Solution
An anti-vibration mechanism for camera devices that uses a movable frame assembly, an electric actuator with an anti-vibration coil and magnets, and a flexible substrate to correct hand tremor by moving the imaging element in a plane perpendicular to the optical axis, separate from the focus adjustment mechanism, allowing for miniaturization and reduced design complexity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If autofocus mechanism and hand tremor correction mechanism are integrally formed, then both functions can be achieved in one structure, but device complexity and assembly difficulty increase
Solution Approach 1:
The patent divides the integrated lens driving mechanism into separate functional modules: the autofocus mechanism (driving mechanism 31) and the hand tremor correction mechanism (anti-vibration mechanism 60). Each module operates independently with its own driving system, allowing simplified assembly and design while maintaining both functions. The autofocus mechanism adjusts focus in the optical axis direction, while the anti-vibration mechanism corrects hand tremor in directions perpendicular to the optical axis.
2Volume of moving object
If leaf spring is used as support member for imaging element, then compact structure is achieved, but deformation during operation hinders normal driving
Solution Approach 1:
The patent replaces the mechanical leaf spring support system with a ball member (15) supported on a base (10a). The ball member enables smooth, reliable movement of the imaging element without the deformation issues inherent in leaf spring mechanisms. This substitution maintains compactness while significantly improving driving reliability and reducing the risk of operation hindrance.
3Ease of operation
If imaging element is moved to correct hand tremor, then hand tremor correction is achieved, but inherent vibration and lens miscentering occur
Solution Approach 1:
The patent separates the hand tremor correction function into an independent anti-vibration mechanism (60) that moves only the imaging element (40), while the lens group (30) remains stable on the optical axis. This segmentation allows hand tremor correction without causing lens miscentering, as each mechanism operates in its designated direction and plane independently.
4Length of stationary object
If lens driving device is made thin and miniaturized, then portability is improved, but driving length and weight of lens cannot be reduced
Solution Approach 1:
The patent implements hand tremor correction by moving the imaging element in planes perpendicular to the optical axis, rather than moving the lens in the optical axis direction. This dimensional change allows compact design without requiring long lens driving travel, as the imaging element can be displaced laterally to achieve the same corrective effect, thereby reducing the overall device thickness.
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 effectively corrects hand tremor, suppresses inherent vibrations, and simplifies lens centering, enabling a more compact camera design with improved image quality and reduced risk of deformation or tilting due to the absence of leaf springs.
Implementation Method 1
When a current is applied to the coil, due to an action of an electromagnetic force, the coil drives the lens holder to move along the optical axis direction of the lens
Implementation Method 2
a ball member configured to hold the imaging element in the frame assembly to enable the imaging element to smoothly move in the frame assembly
Data Source
AI summary
In a camera device that includes a hand tremor correction mechanism, an anti-vibration mechanism for the camera device is provided. An optical system that is movable in an optical axis direction and includes a focus adjustment mechanism is provided in the camera device, includes an anti-vibration mechanism that performs hand tremor correction by anti-vibration of the imaging element, and includes from an object side, an imaging lens group, the anti-vibration mechanism, and an imaging element provided on the anti-vibration mechanism, and a plane perpendicular to the optical axis of the imaging lens group is used as a movement plane to allow the imaging element on the anti-vibration mechanism to move, so as to achieve hand tremor correction.