Detachable Wide-Angle Adapter Lens for Extreme EIS Stabilization
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Solution Overview
Problem
Existing image capture devices struggle to provide enhanced electronic image stabilization (EIS) during extreme activities such as mountain biking and skiing, as they are limited by their inherent stabilization capabilities.
Innovation Solution
An adapter lens is used to enhance EIS by increasing the stabilization margin, allowing the crop window to move across a wider range of angles and compensating for larger image capture device displacements, with the adapter lens being detachable and capable of creating a full fisheye view to stabilize video capture.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a detachable adapter lens is added to increase stabilization margin, then video stabilization is improved, but device complexity increases
Solution Approach 1:
The stabilization system is segmented into two independent parts: the base image capture device and the detachable adapter lens. The adapter lens contains its own optical elements (second group) that can be attached or removed independently, allowing stabilization enhancement without permanently increasing device complexity. This modular approach enables users to add stabilization only when needed.
Solution Approach 2:
The adapter lens serves multiple functions: it provides additional stabilization margin for extreme activities, creates full fisheye view capability, and can be detached when not needed. The lens housing interfaces with the existing lens housing to couple the optical systems, making the stabilization enhancement universally applicable to compatible devices without requiring device-specific modifications.
2Reliability
If the crop window moves across a wider range of angles to compensate for larger displacements, then stabilization is improved, but optical distortion changes
Solution Approach 1:
The system changes optical parameters by introducing the adapter lens with specific optical elements that create a full fisheye view. This parameter change (adding wide-angle optical capability) allows the crop window to move across wider angles while the processor adjusts the EIS algorithm to compensate for the resulting distortion, maintaining stabilization effectiveness.
Solution Approach 2:
The processor detects when the adapter lens is attached and automatically adjusts the EIS algorithm parameters accordingly. This feedback mechanism ensures that the stabilization algorithm accounts for the specific optical characteristics of the adapter lens, compensating for distortion changes while maintaining effective stabilization across the wider angle range.
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 adapter lens enhances video stabilization by maintaining stable video capture across various use cases, including extreme activities, without requiring a calibration process and minimizing optical distortion changes.
Implementation Method 1
The first group of optical elements may be configured to project an image onto the image sensor
Implementation Method 2
The second group of optical elements may be configured to project the image onto the image sensor as an image circle
Data Source
AI summary
An image capture system for enhanced electronic image stabilization (EIS) includes an image capture device and an adapter lens. The image capture device includes an image sensor, a lens housing, a processor, and a lens assembly that includes a first group of optical elements disposed within the lens housing. The first group of optical elements are used project an image onto the image sensor. The processor performs EIS. The adapter lens is used to enhance EIS of the image capture device. The adapter lens has an adapter lens housing that interfaces with the lens housing. The lens housing automatically detects the adapter lens.