Multi-Pass Optical Measurement for High-Transparency Workpieces
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Solution Overview
Problem
Existing optical measurement systems, such as spectrometers, struggle to accurately measure the optical characteristics of highly transparent workpieces due to their limited capacity and the need for recalibration at multiple locations, leading to slow and inaccurate results.
Innovation Solution
A system that uses multiple reflections of electromagnetic radiation through a reflective structure to enhance signal strength and sensitivity, allowing for fast and accurate determination of optical characteristics across multiple locations on a workpiece.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If traditional spectrometers are used to measure highly transparent workpieces, then the measurement process requires recalibration at multiple locations, but this leads to slow and inaccurate results
Solution Approach 1:
The optical path is segmented into multiple reflection bounces, with each bounce providing a measurement at a different location on the workpiece. This allows simultaneous multi-location measurement without sequential recalibration, resolving the contradiction between measurement precision and productivity.
Solution Approach 2:
The electromagnetic radiation signal undergoes periodic reflections between mirrors, creating multiple transmission instances through the workpiece. This periodic action enables rapid sequential measurements at multiple locations without manual intervention, improving both speed and accuracy.
2Reliability
If electromagnetic radiation signals are transmitted through highly transparent workpieces, then the signals are weak, but this reduces measurement sensitivity
Solution Approach 1:
Multiple weak transmission signals from different reflection bounces are combined and accumulated by the detector. This merging of signals increases the overall signal strength and improves detection sensitivity while maintaining measurement stability for highly transparent workpieces.
Solution Approach 2:
The electromagnetic radiation signal continuously reflects and re-transmits through the workpiece multiple times rather than a single pass. This continuous action accumulates signal information, enhancing both sensitivity and reliability for transparent materials.
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 system provides quick, stable, and accurate measurements of high-transparency workpieces, enabling efficient quality control and calibration in high-volume manufacturing environments.
Implementation Method 1
reflecting, with one or more reflectors, the one or more electromagnetic radiation signals back through the workpiece such that the one or more electromagnetic radiation signals are transmitted through the workpiece a plurality of transmission instances
Data Source
AI summary
Systems and methods for optical characteristic measurements are provided. In one example, a system includes one or more electromagnetic radiation sources, one or more reflectors, and at least one detector. The one or more electromagnetic radiation sources provide emission of one or more electromagnetic radiation signals to a workpiece such that each of the one or more electromagnetic radiation signals are at least partially transmitted through the workpiece. The one or more reflectors reflect the one or more electromagnetic radiation signals back through the workpiece such that the one or more electromagnetic radiation signals are transmitted through the workpiece a plurality of transmission instances. One or more characteristics of the workpiece may be determined based at least in part on the one or more electromagnetic radiation signals received at the at least one detector.