Interferometric Beam Path Determination via Spatial Imaging
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Solution Overview
Problem
Interferometric measurement apparatuses struggle to determine the beam path of measurement beams accurately, particularly in determining the direction of vibration and angle of incidence, which is crucial for precise vibration analysis in three-dimensional measurements.
Innovation Solution
A method and apparatus that record spatially resolved images of a measurement object from different perspectives to create a three-dimensional model, allowing for the determination of the beam path by establishing a spatial relation between the measurement beam and the relative beam position image recording unit, enabling precise calculation of the beam path and vibration components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If traditional interferometric measurement apparatuses are used to determine beam path, then the measurement of vibration frequency and amplitude is achieved, but the determination of beam path direction and angle of incidence is imprecise
Solution Approach 1:
The patent introduces an image recording unit as an intermediary device that captures the spatial position of the measurement beam on the measurement object. This intermediary enables indirect determination of the beam path by recording visual information, which is then processed to calculate the angle of incidence and beam direction, thereby improving precision without significantly increasing overall system complexity
Solution Approach 2:
The patent replaces traditional mechanical or manual methods of beam path determination with an optical imaging system. By using an image recording unit to capture beam position and subsequent computational processing, the system substitutes physical measurement mechanisms with optical and computational approaches, enhancing measurement precision while maintaining device simplicity
2Ease of operation
If manual reference points or external models are used for beam path determination, then the setup process is simplified, but the measurement time and operational complexity increase
Solution Approach 1:
The patent implements a self-service mechanism where the image recording unit automatically captures the beam position and the evaluation unit autonomously calculates the beam path parameters. This eliminates the need for manual reference point placement or external model inputs, making the system easier to operate while reducing preparation time through automated processing
Solution Approach 2:
The patent performs preliminary action by having the image recording unit continuously or pre-capture the beam position information before formal measurement begins. The evaluation unit then processes this pre-captured data to determine beam path parameters, streamlining the setup process and reducing operational time without requiring manual intervention
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 approach simplifies the determination of the beam path, enhances accuracy in capturing vibration data, and allows for direction-dependent vibration analysis, facilitating 3D measurement of vibrations without the need for manual reference points or external models.
Implementation Method 1
the measurement beam, which has been at least partially reflected or scattered by the measurement object, is superimposed with the reference beam on a detection surface of the detector such that a superimposition or interference signal between measurement beam and reference beam is measurable by the detector
Implementation Method 2
The frequency of the measurement beam is influenced by the movement or vibration of the object surface, and so conclusions can be drawn about the movement of the object, in particular the vibration frequency of the object surface, from the superimposition signal of the measurement and reference beam
Data Source
AI summary
A method for determining the path of a measurement beam of an interferometric measuring device, includes A. recording a plurality of spatially resolved images of the object under measurement; B. creating a three-dimensional model of the object under measurement; C. providing a beam-position image-recording unit and recording at least one spatially resolved beam-position-determining image; D. determining the spatial position and orientation of the beam-position image-recording unit relative to the object under measurement; E. providing a spatial relation between the spatial path of the measurement beam of the interferometric measuring device and the position and orientation of the beam-position image-recording unit; F. determining the spatial path of the measurement beam of the interferometric measuring device relative to the object under measurement. A measuring device for interferometric measurement of an object under measurement is also provided.