Folded Camera Module with Dual-Axis Reflective Stabilization
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Solution Overview
Problem
Existing camera modules in portable electronic devices struggle to accurately correct continuous shaking during video recording and adjust imaging direction when a subject moves, leading to difficulties in capturing clear video footage.
Innovation Solution
A folded module with a housing, carrier, and rotation holder featuring intersecting axes and magnets/coils for precise rotation of a reflective member, allowing the camera module to track moving subjects and correct shake.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a camera module uses a traditional actuator to move the lens module or reflection module, then the structure is simple, but it is difficult to accurately correct continuous shaking during video recording and track moving subjects
Solution Approach 1:
The camera module is divided into functionally independent sub-modules: a lens module for capturing light, a reflection module with reflective members for redirecting light, and a sensor module for detecting light. Each module can be independently controlled and optimized, allowing precise shake correction and subject tracking through coordinated movement of specific modules without requiring complete structural redesign
Solution Approach 2:
The patent implements dynamic adjustment capabilities by enabling the reflection module to rotate around multiple intersecting axes (first axis and second axis) and allowing the lens module to move along the optical axis. This dynamic positioning system, controlled by multiple actuators, enables real-time adaptation to continuous shaking and moving subjects, achieving accurate stabilization and tracking that static or single-axis systems cannot provide
2Ease of manufacture
If the camera module structure is simplified, then the manufacturing is easier, but the ability to accurately capture video footage of moving subjects is compromised
Solution Approach 1:
By segmenting the camera module into standardized sub-modules (lens module, reflection module, sensor module), each with defined interfaces and functions, the design achieves both manufacturing simplicity and functional reliability. The modular architecture allows independent optimization of each component for its specific function while maintaining ease of assembly through standardized coupling mechanisms
Solution Approach 2:
The reflection module serves multiple functions: it redirects light to the sensor, enables shake correction through rotation around the first axis, and facilitates subject tracking through rotation around the second axis. This multi-functionality is achieved within a single modular component, eliminating the need for separate mechanisms and maintaining manufacturing simplicity while ensuring reliable video capture performance
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
Enables effective stabilization of images and video capture, including Picture-in-Picture functionality, by accurately adjusting the imaging angle to maintain focus on moving subjects.
Implementation Method 1
The carrier is rotatable, with respect to the housing, around a first axis formed by one rotating shaft ball, the rotation holder is rotatable with respect to the carrier around a second axis formed by two ball members
Implementation Method 2
The carrier may include a first magnet for driving, and the rotation holder may include a second magnet for driving, and the first magnet and the second magnet may have a rounded shape
Data Source
AI summary
A folded module is provided. The folded module includes a housing including a first space and a second space, a reflection module disposed in the first space; and a lens module disposed in the second space. A length of the first space in a first axis direction perpendicular to an optical axis direction is longer than a length of the second space in the first axis direction. The housing also includes a carrier, and a rotation holder is disposed in the carrier. At least a portion of the housing, the carrier and the rotation holder is configured to have a rounded shape corresponding to an arc shape of a circle centered on a second axis perpendicular to an optical axis direction and a first axis direction. The first axis direction and the second axis direction are perpendicular to the optical axis direction and cross each other.