Camera Module Guide Groove Partition Walls for OIS Stability
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Solution Overview
Problem
In camera modules with a reflective member, the optical image stabilization (OIS) operation is hindered when the ball member in the accommodation groove reaches a specific position, preventing further rolling motion and affecting the stability of the camera module.
Innovation Solution
The camera module incorporates a rotation holder and a first plurality of ball members between the housing and the rotation holder, with guide grooves on both components that include partition walls to ensure the ball members maintain contact and do not slide, thereby preventing movement hindrance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the accommodation groove is formed with a width that does not limit the ball member's movement direction, then the ball member can move in a smooth rolling motion, but when the ball member reaches a specific position, it may slide instead of roll, hindering carrier movement
Solution Approach 1:
The accommodation groove is divided into multiple sections by partition walls, creating separate regions that guide and constrain the ball member. This segmentation prevents the ball member from sliding by providing continuous rolling surfaces between partition walls, ensuring reliable rolling motion throughout the entire travel path.
Solution Approach 2:
Partition walls are introduced as intermediary structures within the accommodation groove. These partition walls act as mediators that guide the ball member's movement, ensuring it maintains proper orientation and continues rolling smoothly rather than sliding when reaching specific positions in the groove.
2Reliability
If partition walls are added to the guide groove to maintain ball member contact and prevent sliding, then movement stability is improved, but the device complexity increases
Solution Approach 1:
The partition walls are integrated directly into the guide groove structure, merging the guiding function with the containment structure. This combination eliminates the need for separate guiding components, reducing overall device complexity while maintaining movement stability through the partitioned groove design.
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
This configuration ensures uninterrupted rolling motion of the ball members, enhancing the optical image stabilization performance and driving stability of the camera module, particularly during the rotation of the yaw axis of the reflective member.
Implementation Method 1
the ball member moves in a smooth rolling motion
Data Source
AI summary
A camera module is provided. The camera module includes a housing, a rotation holder supported by the housing, and configured to rotate together with a reflective member, and a first plurality of ball members disposed between the housing and the rotation holder. The housing and the rotation holder respectively have guide grooves that accommodate a first set of ball members of the first plurality of ball members. A first set of guide grooves, among the guide grooves, include a plurality of partition walls that protrude toward an internal space of the guide grooves in which the first set of ball members of the first plurality of ball members are accommodated and disposed to be spaced apart from each other in a direction of extension of the guide groove.