Compact Optical Mechanism for Autofocus and Auto-Zoom
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Solution Overview
Problem
The miniaturization of electronic devices, such as cameras and smartphones, poses a challenge in accommodating the driving mechanism for adjusting the focus of camera lenses due to inadequate space, which requires innovative solutions for mechanism design.
Innovation Solution
An optical mechanism is designed with a housing, a movably disposed holder, a lens, a driving assembly, and a base, where the driving assembly includes a coil and magnetic unit to facilitate auto-focus and auto-zoom control, with features like anti-reflection layers and position sensing elements to optimize space usage and functionality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If several coils and magnets are provided in a driving mechanism for adjusting the focus of a camera lens, then the focus adjustment functionality is achieved, but the device size increases and space becomes inadequate
Solution Approach 1:
The patent combines multiple driving mechanisms into a single integrated assembly where coils and magnets are arranged in a compact configuration. The driving assembly merges the focus adjustment mechanism with the holder structure, allowing multiple functions to be achieved within a reduced volume that accommodates the electromagnetic components without increasing overall device size.
Solution Approach 2:
The patent arranges the coils and magnets in a three-dimensional configuration within the holding assembly, utilizing vertical and radial spacing to accommodate the driving mechanism components. By transitioning from a planar to a spatial arrangement, the design fits the necessary electromagnetic components into the available volume without increasing the device's external dimensions.
2Reliability
If the lens surfaces are exposed to the sides of the holder, then optical performance is improved, but the device complexity increases
Solution Approach 1:
The holder structure serves multiple functions: it mechanically supports the lens, provides a framework for the driving assembly, and manages the exposure of lens surfaces. By making the holder multi-functional, the design achieves the optical performance benefit of exposed lens surfaces without adding separate components that would increase complexity.
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 optical mechanism effectively achieves auto-focus and auto-zoom control while minimizing device size by utilizing a compact design that includes a coil and magnetic unit for movement and position sensing, reducing production costs and enhancing miniaturization.
Implementation Method 1
the driving assembly has a coil and a magnetic unit, the magnetic unit is affixed to the housing, and the coil is affixed to a third side of the holder
Data Source
AI summary
An optical mechanism is provided, including a housing, a holder, a lens received in the holder, a driving assembly, and a base connected to the housing. The holder is movably disposed in the housing, and the lens has a first surface exposed to a first side of the holder and facing a first inner sidewall surface of the housing. The driving assembly is disposed in the housing for driving the holder and the lens to move relative to the housing.