Optical Measuring Cell Communication for Faster Polarimeter Calibration
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Solution Overview
Problem
The calibration of polarimeters is cumbersome and error-prone due to the need for handling multiple quartz control plates, making accurate and error-free documentation difficult, especially in the pharmaceutical industry.
Innovation Solution
An optical measuring device with two individually manageable measuring cells that communicate wirelessly with a stationary transmitting/receiving system, allowing for quick and easy calibration and measurement, using information exchange to improve measurement accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If multiple quartz control plates are used for calibration at several rotation angle points, then measurement accuracy and linearity checking are improved, but device complexity and ease of operation deteriorate due to cumbersome handling and documentation
Solution Approach 1:
The patent combines multiple quartz control plates with different rotation angles into a single measuring cell by providing a rotating mechanism that can position different quartz discs in the optical path. This merging eliminates the need to physically handle and exchange multiple separate calibration cells, thereby maintaining calibration accuracy while significantly improving ease of operation and reducing documentation errors
Solution Approach 2:
The measuring cell is designed with multi-functionality to accommodate and rotate between multiple quartz control plates with different rotation angles (e.g., 10°, 20°, 30°). This universal design allows a single cell to perform the function of multiple separate calibration cells, enabling comprehensive linearity checking and calibration at several points without the operational complexity of managing multiple individual cells
2Measurement precision
If multiple quartz control plates are exchanged for calibration at different rotation angles, then measurement precision is improved, but loss of time increases due to repeated insertion and exchange operations
Solution Approach 1:
The system performs preliminary action by pre-positioning multiple quartz control plates with different rotation angles within the same measuring cell before the calibration process begins. The rotating mechanism is pre-configured to access these different angles, eliminating the need for time-consuming exchange operations during calibration and significantly reducing calibration time while maintaining precision
Solution Approach 2:
The patent enables continuity of useful action by allowing seamless rotation between different quartz control plates within the same measuring cell during the calibration process. This continuous operation within a single cell eliminates the interruptions and time losses associated with removing and inserting multiple separate calibration cells, thereby maintaining calibration accuracy while reducing total calibration time
Data Source
AI summary
An optical measuring device having a polarization state generator to prepare a measuring light having a defined polarization state propagating along an analysis beam path, a receiving equipment arranged downstream of the polarization state generator to receive at least a first measuring cell and a second measuring cell, a polarization state analyzer arranged downstream of the receiving equipment, a detector for detecting an intensity of the measuring light, a stationary transmitting/receiving system to communicate with at least one of the first measuring cell and the second measuring cell and an evaluation and control unit for evaluating measuring signals from the detector and/or the polarization state analyzer and/or the polarization state generator taking into account information communicated between the stationary transmitting/receiving system and at least one of the two measuring cells.