Optical System With Guided Movable Portions for Stable Zooming
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Solution Overview
Problem
Existing optical systems in electronic devices face issues with tilting and deflection of optical elements due to long-distance movement, leading to instability and reduced optical quality.
Innovation Solution
An optical system with a first and second movable portion, driven by respective assemblies, guided by stopper and guiding structures, allowing precise adjustment and stabilization through stopper assemblies and guiding elements to control the movement of optical elements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If optical elements are driven to move a long distance for zooming and focusing functions, then the optical system can achieve wider focal range and better image quality, but tilting and deflection of optical elements occur leading to instability
Solution Approach 1:
The optical system is divided into multiple independent movable portions (first movable portion, second movable portion) that can move separately along the optical axis. Each portion contains specific optical elements that can be adjusted independently, allowing the system to achieve various focal lengths while maintaining stability of individual elements through guided movement paths.
Solution Approach 2:
Guiding structures (first guiding structure, second guiding structure) are introduced as intermediary components between the driving assemblies and optical elements. These guiding structures constrain the movement paths of movable portions, preventing tilting and deflection while allowing linear movement along the optical axis, thus mediating between the need for movement and the need for stability.
2Productivity
If optical elements are moved to achieve auto focus and zooming functions, then image-capturing and video-recording functions are enhanced, but precision and stability of optical elements are reduced due to tilting and deflection
Solution Approach 1:
The patent replaces traditional mechanical mounting methods with a combination of guiding structures and magnetic driving assemblies. The guiding structures provide precise mechanical constraints to prevent tilting, while the magnetic driving assemblies (first driving assembly, second driving assembly) enable precise positional control without mechanical contact that could cause deflection, thereby maintaining optical element precision during movement.
Solution Approach 2:
The system changes the movement parameters of optical elements by controlling the driving assemblies to move movable portions along constrained paths defined by the guiding structures. This ensures that optical elements move only in the desired direction (along the optical axis) with controlled velocity and position, preventing parameter deviations such as tilting and deflection that would reduce precision.
3Reliability
If multiple movable portions are introduced to enable precise adjustment of optical elements, then optical quality is improved, but device complexity increases
Solution Approach 1:
The guiding structures serve multiple functions simultaneously: they guide the movement of movable portions along the optical axis, constrain against tilting and deflection, and work with the driving assemblies to achieve precise positioning. This multi-functionality reduces the need for separate components for each function, thereby managing complexity while improving optical quality through precise element adjustment.
Data Source
AI summary
An optical system includes a first movable portion, a fixed portion, a first driving assembly and a first guiding structure. The first movable portion is connected to a first optical element. The movable portion is movable relative to the fixed portion. The first driving assembly drives the first movable portion to move relative to the fixed portion. The first guiding structure guides the first movable portion to move relative to the fixed portion in a first dimension.