Lens Array Device OIS Assembly Shake Correction
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Solution Overview
Problem
Traditional lens array devices in portable devices lack anti-shake functionality, leading to reduced imaging quality due to inevitable shaking during use.
Innovation Solution
A lens array device with an Optical Image Stabilization (OIS) assembly, comprising a frame assembly, optical assembly, circuit board, and OIS units that include coils, magnets, and position detecting units to stabilize the lens array by moving the holder in orthogonal directions, thereby correcting shake.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional lens array device structure is used, then device simplicity is maintained, but anti-shake capability is lost leading to reduced imaging quality
Solution Approach 1:
The lens array device is divided into distinct functional modules: holder assembly (with lenses and image sensors), frame assembly, and OIS assembly (with coils, magnets, and position detecting units). This segmentation allows the anti-shake function to be added as a separate module without completely redesigning the entire device, thus improving imaging quality while controlling overall complexity.
Solution Approach 2:
The holder is designed to be movable relative to the base through the OIS assembly, transitioning from a static structure to a dynamic one. The position detecting units and coils enable the holder to move in response to detected shake, actively compensating for vibrations and improving imaging quality under varying conditions.
2Reliability
If OIS assembly with coils and magnets is added, then anti-shake capability is achieved, but device complexity increases
Solution Approach 1:
The frame assembly serves multiple functions: it provides structural support, houses the OIS assembly components (coils and magnets), and enables the movable holder mechanism. This multi-functionality reduces the need for separate dedicated components, thereby adding anti-shake capability while minimizing the increase in overall device complexity.
Solution Approach 2:
The position detecting units act as intermediaries between the shake detection and the coil-magnet actuation system. They convert physical displacement into electrical signals that control the OIS coils, creating a feedback loop that automatically compensates for vibrations without requiring complex external control systems.
3Reliability
If holder is made movable for anti-shake, then shake correction is enabled, but structural stability may be compromised
Solution Approach 1:
The OIS assembly is designed with coils and magnets positioned in advance to provide electromagnetic cushioning forces that counteract shake before it significantly degrades image quality. The position detecting units continuously monitor holder position and activate the appropriate electromagnetic forces to maintain stability during operation.
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 OIS assembly effectively stabilizes the lens array, improving imaging quality by compensating for device shake through electromagnetic forces, ensuring clearer images.
Implementation Method 1
a first OIS coil disposed on the first circuit portion and electrically connecting with the circuit board... capable of driving the holder to move in a first direction orthogonal to the optical axis direction
Implementation Method 2
a first position detecting unit disposed on the first circuit portion and electrically connecting with the circuit board
Data Source
AI summary
Disclosed is a lens array device. The device includes a base, a holder for retaining the lenses disposed above the base, a first OIS unit for driving the holder to move in a first direction orthogonal to the optical axis direction and a second OIS unit for driving the holder to move in a second direction orthogonal to the optical axis direction. The shake of the frame will be corrected by the electromagnetic force generated by the magnet units and the OIS coils as soon as the position detecting units detecting the shake of the holder in the direction orthogonal to the optical axis direction.