Camera Assembly Rotation for Optical-Axis Anti-Shake Compensation
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Solution Overview
Problem
Existing camera devices with Optical Image Stabilization (OIS) systems can only compensate for linear movements but fail to address rotational shake, leading to unsatisfactory image quality due to user-handheld instability.
Innovation Solution
A camera device with a telescopic connection unit and driving unit that allows the camera assembly to rotate around its optical axis, controlled by a driving unit to compensate for rotational movements using a formula α=arcsin(L/R), where α is the anti-shake compensation angle, L is the movement distance of the telescopic connection unit, and R is the distance from the telescopic connection unit to the optical axis.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the OIS control assembly controls the camera device to move linearly in horizontal and vertical directions, then linear movement compensation is achieved, but rotational shake compensation is not possible
Solution Approach 1:
The patent introduces rotational movement compensation around the optical axis as a new dimension beyond the traditional linear horizontal and vertical movements. The camera assembly is enabled to rotate around the optical axis while maintaining image quality, adding a third dimension of compensation freedom that addresses rotational shake issues.
Solution Approach 2:
The system dynamically adjusts the camera assembly's rotational position around the optical axis based on detected shake patterns. The control assembly continuously modifies the rotation angle and speed to compensate for rotational movements, making the stabilization system adaptive to varying shake conditions.
2Reliability
If the camera assembly rotates around the optical axis, then rotational shake is compensated, but the structural complexity increases
Solution Approach 1:
The camera assembly is designed to perform multiple functions: it can move linearly in horizontal and vertical directions while also rotating around the optical axis. This multi-functional design consolidates multiple stabilization mechanisms into a single integrated assembly, reducing overall structural complexity despite adding rotational capability.
Solution Approach 2:
The patent combines the linear movement control and rotational movement control into a unified control system. The control assembly integrates both linear displacement and rotational angle adjustments, merging what could be separate complex mechanisms into a coordinated single system that achieves comprehensive stabilization.
3Adaptability or versatility
If the camera assembly rotates around the optical axis, then rotational movement compensation is achieved, but the manufacturing precision requirements increase
Solution Approach 1:
The system employs a sensor to detect the camera assembly's rotational position and movement around the optical axis. This feedback information is fed to the control assembly, which adjusts the rotation in real-time to compensate for shake. The feedback mechanism enables precise control without requiring extremely tight manufacturing tolerances, as the system can dynamically correct positioning errors.
Solution Approach 2:
The control assembly dynamically adjusts rotation parameters (angle, speed, direction) based on detected shake patterns. By changing these parameters in real-time rather than relying solely on fixed manufacturing precision, the system achieves accurate compensation while accommodating normal manufacturing variations.
Data Source
AI summary
This application discloses an electronic device, a camera device, and an anti-shake method and anti-shake apparatus for the camera device. The camera device includes a camera assembly, a support frame, a telescopic connection unit, and a driving unit. The camera assembly is disposed on the support frame and is configured to rotate around an optical axis of the camera assembly relative to the support frame. The telescopic connection unit is rotatably connected to the camera assembly, and a rotation axis of rotation of the telescopic connection unit relative to the camera assembly is parallel to the optical axis. The driving unit is connected to the telescopic connection unit and drives the telescopic connection unit to move. The camera assembly is configured to rotate around the optical axis along with movement of the telescopic connection unit.