Segmented Yoke Camera Lens Module for Vibration Correction
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Solution Overview
Problem
Conventional camera lens modules with hand vibration correction functions face challenges in achieving precise and fast correction due to excessive rotation and inefficient use of driving units, leading to accuracy and speed issues.
Innovation Solution
A camera lens module design that includes a vibration correction carrier supported by a rolling unit parallel to the optical axis, an automatic focus driving unit, and segmented yoke units to minimize unnecessary rotation and optimize space, allowing for efficient and precise hand vibration correction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If vibration correction driving is performed using resultant forces in two or more directions, then hand vibration correction function is provided, but excessive rotation is generated and correction accuracy deteriorates
Solution Approach 1:
The vibration correction carrier is divided into multiple segments that can independently rotate around the optical axis. Each segment is controlled by separate driving units, allowing precise control of rotation angles to suppress excessive rotation while maintaining vibration correction functionality
Solution Approach 2:
The vibration correction carrier transitions from a rigid structure to a dynamic segmented structure where each segment can rotate independently. This dynamic configuration allows real-time adjustment of rotation angles to prevent excessive rotation and improve correction accuracy
2Volume of moving object
If the size of driving units is minimized to reduce module size, then compact design is achieved, but vibration correction speed and accuracy are reduced
Solution Approach 1:
The patent introduces rotation around the optical axis as an additional degree of freedom for the vibration correction carrier. This dimensional change allows the system to achieve more effective vibration correction with smaller driving units, as the rotational movement provides an extra mechanism to counteract vibrations without requiring larger linear displacement
3Ease of operation
If driving units are controlled to apply resultant forces, then vibration correction is attempted, but driving performance exceeds control range and accuracy deteriorates
Solution Approach 1:
The patent incorporates sensors to detect the actual position and orientation of the vibration correction carrier, providing feedback to the control system. This feedback mechanism allows the driving units to adjust their output in real-time, preventing excessive rotation and maintaining driving accuracy within the controllable range
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 enables fast and accurate hand vibration correction by suppressing excessive rotation and minimizing power consumption, while maintaining the lens's position on the optical axis, thus improving the overall performance and accuracy of the camera lens module.
Implementation Method 1
a rolling unit disposed in parallel to a direction vertical to an optical axis and configured to support the vibration correction carrier
Implementation Method 2
a plurality of segmented yokes forms a single yoke unit... driving power and power consumption can be minimized by suppressing a malfunction of the vibration correction carrier
Data Source
AI summary
Disclosed herein is a camera lens module. The camera lens module in accordance with an embodiment of the present invention includes a vibration correction carrier, a rolling unit disposed in parallel to a direction vertical to an optical axis and configured to support the vibration correction carrier, a lens barrel carrier disposed on a side opposite the vibration correction carrier based on the rolling unit, and a base configured to mount the vibration correction carrier and the lens barrel carrier on the base.