Shake Correcting System Slide Mechanism Friction Reduction
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Solution Overview
Problem
Existing camera shake correcting systems face challenges in reducing size and thickness while minimizing friction load and power consumption, as they either increase in size or require significant magnetic force to prevent wobbling, leading to increased friction resistance.
Innovation Solution
A shake correcting system that moves the image sensor in a plane orthogonal to the optical axis, utilizing a slide mechanism with magnetic attraction and a rotation restricting mechanism to reduce friction load and power consumption, while incorporating a latch mechanism and tilt prevention to maintain stability and reduce size and thickness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If a guide shaft and movable frame are constantly contacted by magnetic force to prevent wobbling, then the movable frame can be moved smoothly, but friction resistance between the guide shafts and movable frames is increased
Solution Approach 1:
The patent replaces the magnetic force-based contact system with a mechanical guide element system. The guide elements provide physical guidance and stability through precise mechanical fitting between the guide shafts and movable frame, eliminating the need for magnetic attraction while reducing friction resistance.
Solution Approach 2:
The patent removes the magnetic force mechanism from the system entirely, extracting the problematic magnetic attraction that caused increased friction. The stability function is transferred to purely mechanical guide elements that provide guidance without requiring constant magnetic contact.
2Stability of the object's composition
If elements are arranged outwardly in radial direction around optical axis, then rotation restriction is achieved, but size of corrector in optical axis direction is increased
Solution Approach 1:
The patent transitions from a radial arrangement of elements around the optical axis to a planar arrangement within the imaging plane. The guide elements are positioned to restrict rotation through their geometric configuration in the X-Y plane, eliminating the need for radial extension and reducing the optical axis direction size.
Solution Approach 2:
The patent combines the guidance function and rotation restriction function into integrated guide elements. These elements simultaneously provide positional guidance and prevent rotational movement through their unified structural design, eliminating the need for separate radial arrangement of multiple components.
3Reliability
If guide shaft and movable frame are constantly in contact by magnetic force, then wobbling is prevented, but friction resistance is increased leading to higher power consumption
Solution Approach 1:
The patent replaces the magnetic force-based contact system with a mechanical guide element system. The guide elements provide physical guidance and stability through precise mechanical fitting between the guide shafts and movable frame, eliminating the need for magnetic attraction while reducing friction resistance and power consumption.
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 system effectively corrects camera shake with reduced power consumption and friction, achieving a compact design for camera devices by minimizing size and thickness, and enhancing battery longevity.
Implementation Method 1
a slide mechanism which allows the movable unit to be freely movable in the predetermined plane, and comprises a magnet, a magnetic plate attracted to the magnet, a spherical element supported between the magnetic plate and the magnet
Data Source
AI summary
A shake correcting system includes an optical imaging system, an image sensor, a movable unit comprising a movable frame in which the image sensor is fixed and a rotation restricting element, a base movably supporting the movable unit in a predetermined plane substantially orthogonal to an optical axis of the optical imaging system, a drive mechanism driving the movable unit relative to the base in directions vertical and orthogonal to the optical axis, a blur correcting function to correct blurs in a subject image due to shakes of the shake correcting system, a rotation restricting mechanism preventing rotation of the movable frame around the optical axis with the rotation restricting element, and a slide mechanism allowing the movable unit to be freely movable in the predetermined plane, and comprising a magnet, a magnetic plate attracted to the magnet, a spherical element supported between the magnetic plate and the magnet.