Infrared Spectrophotometer Accessory for Simultaneous Raman and IR Measurement
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Infrared spectroscopy and Raman spectroscopy require separate devices for measuring infrared and Raman spectra, making it time-consuming and labor-intensive to acquire both spectra at the same measurement position of a sample.
Innovation Solution
An accessory for an infrared spectrophotometer is designed to be incorporated between the infrared light source and detector, incorporating an infrared optical system, an excitation light source, a Raman spectrometer, and a Raman detector, allowing simultaneous measurement of infrared and Raman spectra at the same sample position by irradiating the sample with infrared light and excitation light, respectively.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If separate infrared spectrophotometer and Raman spectrometer devices are used to measure infrared and Raman spectra, then measurement precision and reliability are maintained, but measurement time increases and productivity decreases
Solution Approach 1:
The patent combines the infrared spectrophotometer and Raman spectrometer into a single integrated device. The infrared light source, Raman excitation light source, sample stage, and respective detectors are merged into one system, allowing simultaneous or sequential measurement of both infrared and Raman spectra at the same measurement position without requiring separate devices, thereby improving productivity while maintaining measurement precision
Solution Approach 2:
The integrated spectrometer system is designed to perform multiple functions: it can measure infrared spectra through the infrared detector and Raman spectra through the Raman detector using the same sample stage and measurement position. This multi-functional design eliminates the need for separate specialized devices, improving measurement efficiency while preserving the precision of both measurement techniques
2Reliability
If separate infrared and Raman measurement devices are used, then each device can be optimized for its specific function, but device complexity increases and ease of operation decreases
Solution Approach 1:
By merging the infrared and Raman measurement systems into a single integrated device with a unified control system, the patent simplifies operation. Users can acquire both infrared and Raman spectra from the same sample position through a single device interface, eliminating the need to operate separate devices and reducing operational complexity while maintaining the specialized functionality of both measurement techniques
3Measurement precision
If separate devices are used for infrared and Raman spectroscopy, then specialized measurement capabilities are maintained, but time and labor required for acquiring both spectra increases
Solution Approach 1:
The integrated system allows simultaneous or sequential acquisition of infrared and Raman spectra at the same measurement position within a single device. This eliminates the time required to transfer samples between separate devices and enables both spectra to be obtained in one measurement session, significantly reducing measurement time and labor while preserving the quality of both spectral measurements
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 easy acquisition of both infrared and Raman spectra at the same measurement position, reducing time and labor, and allowing for simultaneous or sequential measurement without light interference from pressurization or light collection mechanisms.
Implementation Method 1
a prism having a refractive index greater than that of a sample is brought into contact with the sample and the sample is irradiated with infrared light via the prism at an incident angle equal to or greater than the total reflectance critical angle. At this time, although the infrared light is totally reflected at the boundary surface (measurement position) between the prism and the sample
Implementation Method 2
a spectrum measurement device is also known in which a Raman spectrum can be measured by irradiating a sample with laser light (excitation light rays) and detecting the Raman scattered light from the sample. In this type of a spectrum measurement device, Rayleigh scattered light scattered at the same wavelength as the incident light and Raman scattered light scattered at a wavelength different from the incident light by molecular vibrations are generated from the sample on which laser light is incident
Data Source
AI summary
An accessory for an infrared spectrophotometer is provided in which both an infrared spectrum and a Raman spectrum at the same measurement position of a sample can be easily acquired. By incorporating an infrared optical system and an excitation light source into the accessory for an infrared spectrophotometer, infrared light from an infrared light source of the infrared spectrophotometer and excitation light from the excitation light source provided for the accessory are guided to the same measurement position P in the sample S. A total reflection spectrum is acquired by detecting the totally reflected light from the sample S irradiated with the infrared light by an infrared detector of the infrared spectrophotometer. Raman scattered light from the sample S irradiated with the excitation light is detected by a Raman detector provided in the accessory. By incorporating the accessory into the infrared spectrophotometer and measuring the sample S, both the infrared spectrum (total reflection spectrum) and the Raman spectrum at the same measurement position P of the sample S can be easily acquired.