Optical Element Driving Structure for Thin Long-Focal Modules
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Solution Overview
Problem
The integration of optical elements with long focal lengths in electronic devices increases device thickness, hindering miniaturization efforts.
Innovation Solution
An optical element driving mechanism comprising a movable part, fixed part, and driving assembly, with a connecting element and light shielding assembly, designed to minimize device thickness through optimized structural configurations and materials.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If an optical element with a long focal length is provided in an electronic device, then the imaging capability is improved, but the thickness of the electronic device is increased
Solution Approach 1:
The patent implements nesting by placing the movable part inside the fixed part, with the optical element mounted on the movable part that can move within the fixed part's cavity. This nested configuration allows the optical system to achieve long focal length imaging capability while maintaining a compact overall structure that minimizes device thickness.
Solution Approach 2:
The patent transitions from a planar connection between the fixed and movable parts to a three-dimensional spherical surface connection. The first and second connecting elements are disposed on spherical surfaces with different radii, allowing the movable part to move along a curved trajectory. This dimensional change enables compact positioning in three-dimensional space while achieving the required optical path length.
2Device complexity
If the first connecting element first surface is in contact with the second connecting element first surface, then the structure is simplified, but the stability of the connection is reduced
Solution Approach 1:
The patent introduces an intermediate connecting element as a mediator between the first connecting element on the fixed part and the second connecting element on the movable part. This intermediate element fills the gap between the two connecting surfaces, providing stable support and positioning without requiring direct contact between the first and second connecting elements, thereby maintaining connection stability while allowing for proper mechanical coupling.
3Stability of the object's composition
If multiple connecting elements are used to connect the fixed part and movable part, then the connection stability is improved, but the manufacturing complexity is increased
Solution Approach 1:
The patent merges the first connecting element with the fixed part and the second connecting element with the movable part through integral forming, creating unified structures that reduce the total number of separate components. This merging approach maintains the stability benefits of multiple connecting elements while simplifying manufacturing by reducing assembly steps and the number of discrete parts that need to be produced and assembled.
Data Source
AI summary
An optical element driving mechanism is provided, including a movable part, a fixed part, and a driving assembly. The movable part is connected to an optical element. The movable part is movable relative to the fixed part. The driving assembly drives the movable part to move relative to the fixed par. The fixed part includes an outer frame and a base.