Lens Barrel Vibration Synchronization via Leaf Springs
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Solution Overview
Problem
Existing lens systems fail to effectively reduce image blur caused by vibrations when mounted on flying objects, such as drones, as they do not synchronize the movement of lens groups to maintain image stability during high-frequency vibrations.
Innovation Solution
A lens barrel design featuring a first lens frame, a second lens frame, and resilient members like leaf springs that allow the second lens frame to move relative to the first lens frame along the optical axis, ensuring both frames vibrate in the same phase, thereby reducing image blur by synchronizing their movement and stabilizing the image formation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the lens system uses a fixed rigid structure to maintain mechanical stability, then manufacturing precision and structural strength are improved, but image blur caused by high-frequency vibrations from flying objects cannot be reduced
Solution Approach 1:
The patent applies the dynamics principle by replacing the fixed rigid structure with a dynamic resilient member structure. The resilient member (spring) allows the second lens frame to move relative to the first lens frame along the optical axis, enabling the lens system to adapt to high-frequency vibrations from flying objects. This dynamic adjustment capability reduces image blur while maintaining structural stability through the elastic properties of the resilient member.
2Manufacturing precision
If the lens groups are fixed in position to maintain optical precision, then manufacturing precision is improved, but the ability to synchronize movement and reduce vibration-induced blur is lost
Solution Approach 1:
The patent applies parameter changes by allowing the position parameter of the second lens frame to vary relative to the first lens frame. The resilient member enables continuous adjustment of the relative position between lens groups, changing from a fixed state to a variable state. This parameter change capability allows the lens system to synchronize movement with vibrations and maintain image stability while preserving optical precision through controlled positioning.
3Object-affected harmful factors
If a resilient member is introduced to allow relative movement between lens frames for vibration reduction, then image blur is reduced, but device complexity increases
Solution Approach 1:
The patent applies the extraction principle by isolating the vibration reduction function into a separate resilient member component. Instead of making the entire lens barrel complex, only the specific relative movement between lens frames is addressed through the resilient member. This extraction allows the rest of the lens system to maintain simplicity while the resilient member handles the vibration compensation 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 lens barrel effectively suppresses image blur caused by high-frequency vibrations from flying objects by ensuring that the first and second lens groups vibrate in the same phase, maintaining image stability and clarity during image capture.
Implementation Method 1
ensuring both frames vibrate in the same phase, thereby reducing image blur by synchronizing their movement
Implementation Method 2
The resilient member is disposed between the first lens frame and the second lens frame in such a manner as to urge the second lens frame inward against the first lens frame
Data Source
AI summary
Lens barrel 3 is provided with a first lens frame (first group lens frame 10) holding a first lens group (first group lens G1), a second lens frame (second group lens frame 20) holding a second lens group (second group lens G2), and resilient members (leaf springs 14). Second lens frame 20 is disposed inside of first lens frame 10, and furthermore, can be moved relatively to first lens frame 10 in the direction of optical axis AX. The resilient members (leaf springs 14) are disposed between first lens frame 10 and second lens frame 20 in such a manner as to urge second group lens frame 20 inward against first lens frame 10.