Spectroscopic Cavity with Multi-Point Detection for High-Speed Inline Analysis
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional spectroscopic measurement devices struggle to achieve high throughput in examining flat samples, such as glass plates, due to limitations in the number of measurable points per unit time, especially in inline measurement settings where sample speed increases with production demands.
Innovation Solution
A spectroscopic measuring device with a longitudinally extending cavity featuring multiple openings for light entry, detection, and reflection, coupled with a multi-channel spectrometer, allows for simultaneous measurement at numerous points without the need for extensive movement, mimicking the functionality of integrating spheres with improved efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a single measuring device is used to scan the sample point by point, then the device complexity is low, but the productivity is insufficient due to the sequential measurement process
Solution Approach 1:
The cavity is divided into multiple measurement zones along the longitudinal direction, with each zone containing a spectrometer and associated optical components. This segmentation allows simultaneous measurement at multiple points along the sample length, transforming sequential measurement into parallel measurement and significantly increasing productivity.
Solution Approach 2:
The invention transitions from single-point measurement to line measurement by adding the longitudinal dimension. Multiple measurement points are arranged along the longitudinal direction of the cavity, enabling simultaneous measurement across the entire sample length rather than scanning point by point.
2Productivity
If the sample moves faster to increase throughput, then the productivity increases, but the measurement precision deteriorates due to reduced measurement time
Solution Approach 1:
The continuous cavity structure with multiple measurement zones enables uninterrupted spectroscopic measurement along the entire sample length. As the sample moves through the cavity, all measurement points are continuously monitored simultaneously, maintaining measurement quality even at high sample speeds.
Solution Approach 2:
The cavity length is designed to be sufficient to accommodate the entire sample or critical measurement regions. This ensures that even when samples move quickly through the system, the measurement process is not rushed and can complete fully for all necessary points.
3Productivity
If multiple measuring devices are used to increase the number of measuring points, then the productivity improves, but the device complexity and cost increase significantly
Solution Approach 1:
Multiple spectrometers and their associated optical components are integrated into a single unified cavity structure. This merging allows the system to achieve multi-point measurement capability equivalent to multiple separate devices while reducing overall complexity, sharing common structural elements, sample positioning mechanisms, and control systems.
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 configuration enables a significant increase in the number of measurable points per unit time, enhancing measurement efficiency and accuracy, particularly in high-speed industrial production environments.
Implementation Method 1
at least a first opening (35) facing a sample, a plurality of second openings (31) arranged in the longitudinal direction for detecting light emanating from the sample and reflected back into the cavity through the first opening and at least one third opening (33) for coupling light into the cavity
Data Source
Figure 1~3
Figure 4~6
Figure 7
AI summary
The invention relates to a measuring apparatus, which comprises a cavity (34) extending in a longitudinal direction (36), a first opening (35), which is to face a sample, a plurality of second openings (31) for detecting light coming from the sample, and at least one third opening (33) for coupling light into the cavity. Such a measuring apparatus is suitable in particular for spectroscopically examining planar samples.