Camera Module Ball-Guided Reflective Carrier for Image Stabilization
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Solution Overview
Problem
Existing camera modules struggle to stabilize unstable video captures and accurately track moving subjects, requiring manual adjustment by users.
Innovation Solution
A camera module design featuring a reflective member and a carrier system with ball groups and guide grooves that allow for rotational movement of the reflective member, stabilized by magnetic forces, enabling optical image stabilization and improved tracking of moving subjects.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a reflective member is added to change optical path direction, then the camera module can stabilize optical images and track moving subjects, but the device complexity increases
Solution Approach 1:
The reflective member is nested within the carrier structure, which itself is integrated into the camera module housing. The ball group mechanism is embedded within the carrier, creating a compact nested arrangement that reduces overall complexity while maintaining image stabilization functionality.
Solution Approach 2:
The carrier acts as an intermediary component between the housing and the reflective member, providing a stable mounting platform. The ball group serves as a mediator that enables controlled rotational movement of the carrier, facilitating both image stabilization and moving subject tracking without requiring direct mechanical connections.
2Reliability
If the carrier is made rotatable about a first axis for stabilization, then optical image stabilization is achieved, but the manufacturing precision requirements increase
Solution Approach 1:
The invention changes the rotational parameters of the carrier by introducing rotation about a first axis (perpendicular to the optical axis) for image stabilization, while maintaining the ability to rotate about a second axis for tracking. This parameter change enables stabilization functionality while the ball group mechanism provides precise control over the rotational movement.
Solution Approach 2:
The carrier transitions from a static component to a dynamic one capable of controlled rotation. The ball group mechanism enables the carrier to dynamically adjust its orientation about the first axis for stabilization and about the second axis for tracking moving subjects, with the rotational movement being controlled by magnetic forces between the magnet and coil.
3Extent of automation
If magnetic forces are used to move the lens module or reflective module, then the system achieves automated control, but the device complexity increases
Solution Approach 1:
The invention replaces traditional mechanical actuators with a magnetic field-based actuation system. A magnet is disposed in the carrier and a coil in the housing, creating electromagnetic forces that control the rotational movement of the carrier about both the first and second axes. This substitution eliminates complex mechanical linkages and provides more precise automated control.
Solution Approach 2:
The magnetic actuation system serves multiple functions: it controls image stabilization by rotating the carrier about the first axis, enables tracking of moving subjects by rotating about the second axis, and can potentially control focus adjustment. This multi-functionality reduces the need for separate actuator systems for each function.
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 effectively stabilizes images during video capture and allows for automatic tracking of moving subjects, enhancing the camera's stability and usability.
Implementation Method 1
a reflective member disposed in the housing and changing a direction of light to a direction of an optical axis
Implementation Method 2
the actuator may move the lens module or the reflective module in a direction intersecting an optical axis direction using driving force generated by a magnet and a coil
Data Source
AI summary
A camera module includes a housing, a reflective member positioned in the housing and changing a direction of light to a direction of an optical axis, a carrier carrying the reflective member and rotatable about a first axis with respect to the housing, and a first ball group disposed between the housing and the carrier, wherein the first ball group includes a main ball member providing the first axis of the carrier, and an auxiliary ball member disposed away from the first axis, and one or both of the housing and the carrier partially accommodates the auxiliary ball member, and includes an auxiliary guide groove extended in a circumferential direction of the first axis.