Optical Tracking Marker With Integrated Lens for Single-Unit Posture Calculation
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Solution Overview
Problem
Conventional optical tracking systems require multiple markers for precise tracking, leading to increased equipment size and complexity, making them unsuitable for applications requiring fine precision.
Innovation Solution
An optical tracking system with a marker part featuring a pattern and a first lens, and an image forming part with a second lens, using a coordinate conversion formula to determine the posture of the marker part, allowing for accurate tracking with simplified marker configurations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If multiple markers are used for precise tracking, then measurement precision is improved, but device complexity increases
Solution Approach 1:
The patent combines multiple markers into a single integrated marker part that includes a pattern and lens system. This single marker part performs the tracking function that previously required multiple separate markers, thereby reducing device complexity while maintaining tracking precision through the coordinated optical elements within the unified structure.
Solution Approach 2:
The marker part is designed as a multi-functional unit that simultaneously provides pattern recognition features and optical focusing capabilities through its integrated lens system. This universal design allows a single component to fulfill multiple tracking functions, eliminating the need for separate markers and reducing overall system complexity.
2Measurement precision
If multiple markers are used for precise tracking, then measurement precision is improved, but equipment size increases
Solution Approach 1:
By merging multiple markers into one integrated marker part with combined pattern and lens elements, the physical space required is significantly reduced. The unified structure occupies less volume compared to multiple separate markers, thereby reducing equipment size while preserving precise tracking capabilities through the integrated optical design.
3Reliability
If conventional markers are used, then tracking functionality is achieved, but ease of operation deteriorates due to complexity
Solution Approach 1:
The integration of pattern and lens into a single marker part simplifies the setup and operation process. Users only need to deploy one unified component rather than multiple separate markers, making the system easier to operate while maintaining reliable tracking functionality through the coordinated internal elements.
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
Enables accurate and simplified tracking of markers, reducing equipment size while maintaining precision, by modeling the optical system and calculating the posture of the marker part using the coordinate conversion formula.
Implementation Method 1
an image forming unit that is spaced apart from the second lens and on which an image of the pattern is formed by the first lens and the second lens
Data Source
AI summary
An optical tracking system comprises a marker part, an image forming part, and a processing part. The marker part includes a pattern having particular information and a first lens which is spaced apart from the pattern and has a first focal length. The image forming part includes a second lens having a second focal length and an image forming unit which is spaced apart from the second lens and forms an image of the pattern by the first lens and the second lens. The processing part determines the posture of the marker part from a coordinate conversion formula between a coordinate on the pattern surface of the pattern and a pixel coordinate on the image of the pattern, and tracks the marker part by using the determined posture of the marker part. Therefore, the present invention can accurately track a marker part by a simpler and easier method.