Periscope Optical Element Driving Mechanism for Thin Device Stabilization
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Solution Overview
Problem
Conventional optical element driving mechanisms in electronic devices face challenges in miniaturization and displacement correction, leading to potential blurring of photographs or videos due to device shake, and require improved mechanical strength and optical path adjustment for better recording quality.
Innovation Solution
An optical element driving mechanism with a movable part connected to a fixed part via a driving assembly and supporting assembly, allowing movement in multiple dimensions, incorporating a metal reinforcement assembly for mechanical strength and a sensing assembly for precise movement control, enabling optical zooming, auto-focusing, and image stabilization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple optical elements with different focal lengths are provided to improve recording quality and shooting range, then the recording capabilities and viewing angles are improved, but the device thickness increases
Solution Approach 1:
The patent employs a periscope mechanism that changes the direction of the optical path by 90 degrees, allowing the optical elements to be arranged in a depth direction rather than a lateral direction. This dimensional change enables multiple optical elements with different focal lengths to be integrated without increasing the device's lateral thickness, thus maintaining thin profile while providing versatile recording capabilities.
2Length of stationary object
If the device is made thinner to meet consumer preferences, then the appearance and portability are improved, but the displacement correction capability deteriorates
Solution Approach 1:
The patent integrates the displacement correction mechanism within the periscope structure by nesting the movable part that carries the optical element inside the fixed periscope housing. The movable part can shift in the optical axis direction to correct displacement caused by device shake, while the entire periscope mechanism remains compact in lateral dimensions. This nested arrangement enables displacement correction functionality without increasing device thickness.
3Length of stationary object
If a periscope mechanism is created to change the optical path direction, then the device thickness is reduced, but the mechanical strength and stability deteriorate
Solution Approach 1:
The patent employs a composite structure where the fixed part and movable part are made of materials with appropriate mechanical properties. The fixed part housing provides structural strength and stability, while the movable part uses materials that allow controlled movement along the optical axis. This composite material approach ensures that the periscope mechanism maintains sufficient mechanical strength despite its compact, thin design.
4Adaptability or versatility
If the optical element is made movable to enable auto-focusing and zooming, then the functionality is improved, but the device complexity increases
Solution Approach 1:
The patent designs the movable part to perform multiple optical functions simultaneously. By moving the optical element along the optical axis, the mechanism achieves auto-focusing (by adjusting the focal distance), optical zooming (by changing the effective focal length), and displacement correction (by compensating for shake). This multi-functional design enables diverse optical capabilities through a single movement mechanism, reducing overall system complexity compared to having separate mechanisms for each function.
Data Source
AI summary
An optical element driving mechanism is provided, including a movable part for connecting an optical element; a fixed part, wherein the movable part can move relative to the fixed part; a driving assembly for driving the movable part to move relative to the fixed part; and a supporting assembly, wherein the movable part can move relative to the fixed part in multiple dimensions via the supporting assembly.