Optical Member Driving Mechanism for Thin Device Focus Adjustment
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Solution Overview
Problem
Conventional optical member driving mechanisms in consumer electronic devices, such as smartphones and tablets, face challenges in maintaining device thickness when incorporating lens modules with long focal lengths, as they become thicker and less convenient.
Innovation Solution
An optical member driving mechanism comprising a movable portion, a fixed portion, and a driving assembly, where the movable portion is connected to an optical member and can rotate around two perpendicular axes, utilizing a supporting member and an elastic member to adjust the optical member's position and emission direction, allowing for focus adjustment without increasing device thickness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a lens with a long focal length is disposed in an electronic device, then the optical performance and photography capability are improved, but the electronic device becomes thicker
Solution Approach 1:
The patent employs a movable portion that can rotate relative to a fixed portion, enabling the optical member to dynamically adjust its emission direction. This dynamic mechanism allows the system to achieve focus adjustment and light path control without requiring a thicker static lens structure, thereby maintaining device thinness while preserving optical performance.
Solution Approach 2:
The patent introduces rotational movement around two perpendicular axes (first rotation axis and second rotation axis) to control the optical member's emission direction. By adding angular dimensions to the system, the patent achieves focus and light path adjustment without increasing the linear thickness of the device, effectively solving the contradiction between optical performance and device thinness.
2Adaptability or versatility
If the optical member is made movable to adjust emission direction, then the functionality and adaptability are improved, but the device complexity increases
Solution Approach 1:
The patent integrates the driving assembly directly into the movable and fixed portions, combining the actuation mechanism with the structural components. The supporting member (ball) serves multiple functions by being disposed at the intersection of two rotation axes, enabling rotational movement around both axes while reducing the need for separate complex mechanisms for each degree of freedom.
Solution Approach 2:
The movable portion serves multiple functions: it holds the optical member, provides rotational movement around two perpendicular axes, and enables both focus adjustment and light path control. The supporting member (ball) universally supports rotation around multiple axes and maintains the gap between movable and fixed portions, reducing overall system complexity through multi-functionality.
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
Enables efficient focus adjustment and light path adjustment in electronic devices, maintaining device thinness while accommodating lens modules with long focal lengths, by allowing the optical member to move relative to the fixed portion, thus enhancing the functionality and convenience of electronic devices.
Implementation Method 1
an elastic member, connected to the fixed portion and the movable portion, and providing an elastic force to the movable portion. The elastic force pushes the movable portion close to the base.
Data Source
AI summary
An optical member driving mechanism is provided, including a movable portion, a fixed portion, and a driving assembly. The movable portion is connected to an optical member. The fixed portion has an accommodating space, and the optical member is received in the accommodating space. The movable portion is movable relative to the fixed portion. The driving assembly is configured to drive the movable portion to move relative to the fixed portion.