Dual Camera FOV Alignment via Rotating Reflector
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Solution Overview
Problem
Electronic devices with dual cameras face challenges in matching the fields of view (FOVs) of wide-angle and telephoto cameras due to distance and angle differences, making it difficult to obtain a composed image that users desire.
Innovation Solution
The device includes a first camera and a second camera with a specified spacing distance, where the first camera's capture area is within the second camera's capture area or overlaps with it, and a processor that moves or rotates a reflecting part to align the FOVs, ensuring the centers of the cameras match and the image composition is suitable.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a dual camera system with wide-angle and telephoto cameras is used, then the device can capture images at different angles and generate diverse image types, but it becomes difficult to match the fields of view of the cameras due to distance and angle differences
Solution Approach 1:
The patent introduces a reflecting part (mirror or prism) that redirects light at an angle, effectively adding a dimensional transformation to the optical path. This allows the first camera to capture images at a different angle while maintaining proper field of view overlap with the second camera, resolving the alignment issue without requiring precise mechanical positioning of the cameras themselves
Solution Approach 2:
The reflecting part acts as an intermediary element between the external object and the first camera. By introducing this intermediate optical component, the system can achieve proper field of view matching without requiring the cameras to be positioned at precisely calculated distances and angles from each other
2Adaptability or versatility
If the cameras are positioned at different distances and angles to capture diverse images, then the device can generate different image characteristics, but the fields of view cannot be properly overlapped in the region of interest
Solution Approach 1:
The reflecting part is made movable or rotatable, allowing dynamic adjustment of the field of view angle. This enables the system to maintain proper field of view overlap in the region of interest while still capturing diverse image characteristics, as the reflecting part can be adjusted to optimize both overlap and angle of view simultaneously
3Reliability
If the centers of the cameras are not aligned, then each camera can capture its own optimal field of view, but the composed image quality deteriorates
Solution Approach 1:
The patent separates the functions of individual camera optimization and field of view alignment. Each camera can maintain its optimal individual performance while the reflecting part handles the alignment function, ensuring that the composed image quality is not compromised by misalignment
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
This solution allows for effective alignment of camera fields of view, enabling the generation of desired composed images by ensuring the first camera's capture area is within or overlaps with the second camera's capture area, thus improving image composition and stability.
Implementation Method 1
the electronic device may actively change the FOV of the camera by moving or rotating a reflecting part (e.g., a mirror, a prism, or the like)
Data Source
AI summary
An electronic device includes a first camera for shooting in a first direction, a second camera for shooting in the first direction, and at least one processor for processing images collected through the first camera and the second camera. A specified spacing distance is maintained between the first camera and the second camera. Within a shortest focusable distance of the first camera, a first capture area of the first camera is included in a second capture area of the second camera or makes contact with an inside of the second capture area of the second camera.