Optical System With Magnetic Lens-Group Position Control
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Solution Overview
Problem
Existing optical systems in electronic devices face issues with tilting and deflection of optical elements during long-distance movement, leading to instability and reduced optical quality.
Innovation Solution
An optical system with movable portions driven by magnetic assemblies and sensed by magnetic sensors, allowing precise control of optical element positions through flexible circuit connections, enabling miniaturization and improved stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If optical elements are driven to move a long distance to achieve zooming and focusing functions, then the optical system can perform auto focus and zooming, but this leads to tilting or deflection of optical elements causing instability
Solution Approach 1:
The optical system is divided into multiple independent lens groups (first lens group G1, second lens group G2, third lens group G3, fourth lens group G4) that can move independently. Each lens group has its own driving assembly, allowing precise control of individual groups to achieve zooming and focusing without requiring any single group to travel long distances, thereby reducing tilting and deflection.
Solution Approach 2:
The patent implements dynamic movement control where different lens groups move by different distances in different directions based on the specific optical function being performed. The driving assemblies dynamically adjust the position of each lens group to achieve the desired optical effect while maintaining stability, rather than moving all elements uniformly over long distances.
2Adaptability or versatility
If multiple driving assemblies and sensing assemblies are added to control optical element positions, then auto focus and zooming functions are achieved, but the device complexity increases
Solution Approach 1:
The patent combines multiple functions into integrated assemblies. Each lens group is equipped with both a driving assembly and a sensing assembly that work together as an integrated unit. The sensing assemblies detect positional information and feed back to the driving assemblies, creating self-contained control modules that reduce overall system complexity compared to having separate distributed control mechanisms.
Solution Approach 2:
Sensing assemblies are incorporated to detect the positional information of lens groups and provide feedback to the driving assemblies. This closed-loop feedback mechanism enables automatic adjustment and precise control of optical elements, achieving auto focus and zooming functions while simplifying the control architecture through intelligent feedback rather than complex open-loop control systems.
3Volume of moving object
If the optical system is miniaturized to make electronic devices thinner and lightweight, then portability is improved, but precision control of optical element positions becomes more difficult
Solution Approach 1:
The patent replaces traditional mechanical positioning mechanisms with magnetic driving assemblies. The driving assemblies use magnetic fields to exert forces on lens groups, enabling precise control of optical element positions without complex mechanical linkages. This substitution allows for compact design while maintaining high positioning precision, as magnetic fields can be precisely controlled and do not require large mechanical structures.
Solution Approach 2:
The patent utilizes changes in magnetic field parameters (strength, direction, distribution) to control the position of lens groups. By adjusting magnetic field parameters rather than mechanical dimensions, the system achieves precise control in a compact form factor. The sensing assemblies detect positional parameters and the driving assemblies adjust magnetic field parameters to maintain precise control despite miniaturization.
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 achieves precise adjustment of optical elements, reducing tilting and enhancing optical quality by accurately controlling focal length and image plane, thus improving stability and performance.
Implementation Method 1
a magnetic driving assembly for driving the movable portion carrying the optical element to move
Implementation Method 2
a magnetic sensor corresponding to the reference magnetic element, the magnetic sensor being disposed on the circuit assembly
Data Source
AI summary
An optical system is provided in the present disclosure, including a first movable portion, a fixed portion, a first driving assembly, and a circuit assembly. The first movable portion is connected to a first optical element. The first 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 movable portion is movably connected to the fixed portion via the circuit assembly.