Camera Lens Assembly Motion Sensor Integration
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Solution Overview
Problem
In cinematography, accurately determining the motion and orientation of a camera system relative to the filmed scene during live-action footage is challenging, especially when the scene lacks distinct features, making it difficult to automate and often requiring time-consuming and imprecise calculations.
Innovation Solution
A camera lens assembly with a motion sensor arrangement comprising angular rotation sensors and linear acceleration sensors, integrated within the lens assembly housing, which detects and records data on the camera's motion and orientation, allowing for precise tracking and synchronization with the camera body's clock, enabling accurate determination of the camera's position, motion, and orientation during filming.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If 2D recorded images are analysed in post-production to construct 3D image of tracking markers, then motion and orientation data can be obtained, but the process is time-consuming and lacks precision when the scene lacks clearly identifiable features
Solution Approach 1:
The patent applies preliminary action by installing motion sensors (angular rotation sensors and linear acceleration sensors) on the camera system before filming to continuously record motion and orientation data during the shooting process. This eliminates the need for time-consuming post-production analysis of tracking markers, as the data is already captured in real-time during filming, directly resolving the contradiction between measurement precision and time loss.
2Speed
If ultrasonic or infrared transmitters are used to detect camera position, then real-time tracking is achieved, but the equipment complexity and setup requirements increase
Solution Approach 1:
The patent extracts the tracking function from external complex systems (ultrasonic or infrared transmitters) and integrates it directly into the camera lens assembly through built-in motion sensors. This extraction simplifies the overall system by eliminating separate tracking equipment while maintaining real-time tracking capability, thus resolving the contradiction between tracking speed and device complexity.
Solution Approach 2:
The camera system performs self-tracking through integrated motion sensors that continuously monitor and record the camera's own motion and orientation data. This self-service approach eliminates the need for external transmitters and receivers, reducing system complexity while achieving real-time tracking, thereby resolving the contradiction between tracking speed and device complexity.
3Measurement precision
If motion sensors are integrated within the lens assembly housing, then accurate motion tracking is achieved, but the device complexity increases
Solution Approach 1:
The patent merges the motion sensing function with the lens assembly housing by integrating angular rotation sensors and linear acceleration sensors directly into the lens structure. This combination allows the lens assembly to serve dual purposes: optical imaging and motion tracking, thereby improving motion detection accuracy while minimizing the increase in device complexity through functional integration.
Data Source
AI summary
A camera lens assembly comprising a lens assembly housing and a compound lens and a motion sensor arrangement within the lens assembly housing, wherein the motion sensor arrangement comprises: angular rotation sensors configured to detect angular rotation about three orthogonal axes of rotation; and linear acceleration sensors configured to detect linear acceleration in three orthogonal directions.