CN213148741U - Handheld Raman spectrometer for rapid quantitative detection of oil - Google Patents
Handheld Raman spectrometer for rapid quantitative detection of oil Download PDFInfo
- Publication number
- CN213148741U CN213148741U CN202020890605.3U CN202020890605U CN213148741U CN 213148741 U CN213148741 U CN 213148741U CN 202020890605 U CN202020890605 U CN 202020890605U CN 213148741 U CN213148741 U CN 213148741U
- Authority
- CN
- China
- Prior art keywords
- light source
- laser
- lens
- mirror
- light
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Investigating, Analyzing Materials By Fluorescence Or Luminescence (AREA)
- Spectrometry And Color Measurement (AREA)
Abstract
The utility model relates to a handheld Raman spectrometer for oil material rapid quantitative detection, which comprises a light source system, an adama transformation detection system and a control system; the light source system is connected with the adama conversion detection system, and the control system is respectively and electrically connected with the light source system and the adama conversion detection system; the light source system comprises a laser, a first lens, an isolator, a second lens and an optical fiber, light emitted by the laser sequentially passes through the first lens, the isolator, the second lens and the optical fiber, the laser is used for emitting laser, the first lens is used for collimating the light emitted by the laser, the isolator is used for preventing backward transmission light in a light path from influencing a light source, and the second lens is used for receiving the light transmitted by the isolator and carrying out gathering transmission on the light to the light. The utility model has the advantages of it is miniaturized and can carry out quick quantitative determination to the oil.
Description
Technical Field
The utility model relates to a spectral measurement field especially relates to a raman spectroscopy appearance.
Background
The Raman spectrometer system is designed based on a Raman scattering mechanism, Raman scattering is an important spectral analysis means, and molecular structure information of a substance can be analyzed by collecting Raman spectrum information of the substance components. Raman spectroscopy is a powerful spectroscopic analysis technique, and conventional raman detection methods are generally bulky and can only be directed to raman detection in laboratories and at fixed locations. The raman spectrometer has been developed into a handheld raman spectrometer capable of performing field test for years, can perform rapid evidence obtaining on site, and is widely applied to the fields of customs, public security, security inspection and the like.
The existing Raman spectrometer adopts optical fibers as a light guide device, and is mainly used for transmitting laser to a Raman probe and transmitting Raman signals to a spectrometer box in a handheld Raman spectrometer. The material of the optical fiber has certain absorption loss for light with different wavelengths, and the volume of the optical fiber coupler is large, the coupling efficiency is low, and the coupling efficiency of the optical fiber coupler is generally 80% -90%. The following limitations exist with the handheld raman spectrometer using fiber optic transmission, first: the instrument is limited in its miniaturized design due to the limitations of the fiber turn radius and the fiber stub size, and miniaturization is a very important indicator of hand-held instruments. Secondly, the method comprises the following steps: due to the optical absorption of the optical fiber material and the coupling loss of the optical signal of the joint, the signal intensity of the instrument is not high, and the Raman detection time is long.
Meanwhile, no special rapid Raman spectroscopy instrument special for detecting oil liquid exists at present, and when oil parameters are quantitatively detected through Raman spectroscopy, fluorescent substances exist in oil, spectral signals are particularly large in interference noise, and particularly diesel substances cause that useful information of Raman spectroscopy is submerged and cannot be detected.
There is a need for a miniaturized raman spectroscopy instrument that can be used for oil liquid detection.
Disclosure of Invention
The utility model relates to a solve among the prior art that the fiber coupler volume is bigger and coupling efficiency ratio is lower, have fluorescent substance in the oil, the great problem of spectral signal interference noise provides a quick quantitative handheld raman spectroscopy appearance that detects of oil, through multi-wavelength light source and semiconductor refrigeration and, has solved above-mentioned problem.
The utility model provides a handheld Raman spectrometer for fast quantitative detection of oil, which comprises a light source system, an adama transformation detection system and a control system;
the control system is electrically connected with the light source system and the adama conversion detection system respectively;
the light source system comprises a laser, a light source pretreatment system and an optical fiber, wherein the laser, the light source pretreatment system and the optical fiber are arranged in a light source system shell, the optical fiber is arranged on one side of the light source system shell and penetrates through the light source system shell, an outlet of the laser is connected with an inlet of the light source pretreatment system, an outlet of the light source pretreatment system is connected with an inlet of the optical fiber, the light source pretreatment system is used for correcting light rays emitted by the laser, and the light rays are emitted by the laser and enter the optical fiber through the light source pretreatment system;
the light source pretreatment system comprises a first lens, an isolator and a second lens, wherein the first lens, the isolator and the second lens are arranged in a light source system shell, the incident surface of the first lens is connected with the outlet of a laser, the emergent surface of the first lens is connected with the inlet of the isolator, the outlet of the isolator is connected with the incident surface of the second lens, and the emergent surface of the second lens is connected with the inlet of an optical fiber;
the light emitted by the laser sequentially passes through the first lens, the isolator and the second lens and enters the optical fiber.
The laser is used for transmitting laser, and first lens are used for carrying out the collimation to the light that the laser sent, and the isolator is arranged in preventing to transmit light backward in the light path and causes the influence to the light source, and the second lens are used for receiving the light that the isolator transmitted and carry out the gathering to it and transmit to light.
The utility model discloses a handheld raman spectroscopy appearance of quick quantitative determination of oil, as preferred mode, light source pretreatment systems still includes light filter and rayleigh scattering light filter, and light filter and rayleigh scattering light filter set up in light source system casing, and the light filter sets up between laser instrument and first lens, and rayleigh scattering light filter sets up between optic fibre and second lens.
The utility model discloses a handheld Raman spectroscopy appearance of quick quantitative detection of oil, as preferred mode, adama transform detecting system includes the slit, the collimating mirror, the grating, first speculum, the micromirror array, the battery of lens, detector and second mirror, slit entry linkage fiber optic outlet, slit exit linkage collimating mirror entry, the first speculum mirror surface of collimating mirror exit linkage, first speculum mirror surface reflection light transmits to the grating entry, grating exit linkage second mirror surface, the second mirror transmits light to the micromirror array, the micromirror array sets up with the detector relatively, the micromirror array transmits light to the detector.
The slit is used for obtaining a parallel light source with good coherence, the collimating mirror is used for further collimating light passing through the slit, the grating is used for dispersing the light passing through the collimating mirror, the first reflecting mirror and the second reflecting mirror are used for reflecting laser, the micromirror array is used for being electrically connected with the control system, the control system is used for adjusting the micromirror array to bear the Hadamard transform matrix, and the lens group is used for collimating light rays reflected by the micromirror array into parallel light and transmitting the parallel light to the detector. The detector may be a CCD or PMT.
The design of the diffraction grating, the reflector plate, the emergent slit and the array detector is adopted, and different detectors are responsible for collecting different optical information of the spectrum part.
The utility model discloses a handheld Raman spectrometer of quick quantitative determination of oil, as preferred mode, the grating is pan-cycloid grating.
The pan-cycloid grating adopts a Rowland circle structure with continuous curvature change, the Rowland circle curvature is gradually and continuously changed according to different light source wavelength and resolution requirements, and the pan-cycloid equation is adopted for continuous curvature change, so that the size of the light splitting system is minimum on the premise of ensuring the wavelength range and precision of a light splitting spectrum.
The utility model discloses a handheld Raman spectroscopy appearance of quick quantitative determination of oil, as preferred mode, the laser instrument is dual wavelength laser, and dual wavelength laser is used for the first wavelength laser and/or the second wavelength laser that are used for the emission wavelength difference.
By adopting the dual-wavelength laser, under the condition of keeping the equipment small in size and being capable of being used by hands, the laser with two wavelengths can be used for carrying out Raman spectrum detection on a detected sample at the same time, and the defect that the existing handheld Raman spectrometer can only carry out Raman spectrum detection with a single wavelength is overcome. For a detected sample with a fluorescence effect, laser with longer wavelength in two wavelengths is used, so that the interference of the fluorescence of the sample on a Raman signal is avoided; for a detected sample without a fluorescence effect, the laser with shorter wavelength in the two wavelengths is used, and a stronger Raman spectrum signal of the sample can be obtained. Laser with two wavelengths can be used simultaneously, Raman scattered light of two wave bands obtained by the laser with the two wavelengths can be subjected to spectrum analysis simultaneously, and therefore the method has higher detection accuracy compared with the Raman spectrum analysis of one laser wavelength.
The utility model discloses a handheld Raman spectrometer of quick quantitative detection of oil, as preferred mode, control system includes DMD micro mirror controller, signal processor, the light source controller, main control unit, a computer, DMD micro mirror controller, signal processor and light source controller all are connected with main control unit, main control unit connects the computer, signal processor connects the detector, the light source controller connects the laser, DMD micro mirror controller is used for controlling the rotation of micro mirror array and makes the state of every micro mirror in the micro mirror array unanimous with matrix template state in the DMD micro mirror controller, signal processor is used for receiving the spectrum that the detector picked up, and transmit the intensity information of spectrum to main control unit, the light source controller is used for controlling the laser, main control unit is used for controlling DMD controller, signal processor and light source controller state and receiving feedback information, and transmitting the content of the specific element in the oil sample to a computer, wherein the computer is used for providing feedback information to analyze the content of the specific element in the oil sample.
The micro mirror array is adopted, different micro mirrors have different frequencies, so that parameters of multiple frequencies can be detected at one time, and the micro mirror array is turned over for multiple times to form different combinations, so that the signal to noise ratio is improved.
The utility model discloses a handheld Raman spectroscopy appearance of quick quantitative determination of oil, as preferred mode, the adama transform detecting system still includes refrigerating plant, and refrigerating plant connects the detector, and refrigerating plant is the semiconductor refrigeration.
In order to reduce noise in the spectral detection and increase the signal-to-noise ratio, the detector often needs to be cooled. Particularly, when a weak Raman signal is detected, cooling is usually required to be below minus dozens of degrees centigrade. When the operating temperature is reduced to-50 degrees, the dark current noise of the detector itself is negligible. The semiconductor refrigeration method is adopted to utilize the Peltier effect of the semiconductor, namely after the thermocouple is electrified with direct current, heat absorption and heat release phenomena are generated at the junction of the thermocouple due to different electrified directions of the direct current, the volume is small, the power consumption is low, and the miniaturization of the Raman spectrometer is facilitated.
The utility model discloses beneficial effect as follows:
(1) the detection precision is improved by adopting semiconductor deep refrigeration;
(2) the dual-wavelength laser light source difference is adopted for fluorescence suppression, so that the detection precision is improved;
(3) the Rowland circle structure with continuous curvature change is adopted, the Rowland circle curvature is gradually and continuously changed according to different light source wavelengths and the resolution requirements, and the continuous curvature change adopts a pan-cycloid equation, so that the size of the light splitting system can be minimized on the premise of ensuring the wavelength range and the precision of a light splitting spectrum;
(4) the Hadamard transform spectrum is adopted, the luminous flux is large, a plurality of spectrum data points are collected, the spectrum information of the obtained sample is rich, and the scanning speed is high.
Drawings
FIG. 1 is a schematic diagram of a hand-held Raman spectrometer for rapid quantitative oil detection;
FIG. 2 is a schematic view of a light source pretreatment system of a handheld Raman spectrometer for rapid quantitative detection of oil;
FIG. 3 is a schematic view of a hand-held Raman spectrometer light source system for rapid quantitative oil detection;
FIG. 4 is a schematic diagram of a hand-held Raman spectrometer Aldamard transform detection system for rapid quantitative detection of oil;
fig. 5 is a schematic diagram of a control system of a handheld raman spectrometer for rapid quantitative detection of oil.
Reference numerals:
1. a light source system; 11. a laser; 12. a light source pre-processing system; 13. an optical fiber; 121. a first lens; 122. an isolator; 123. a second lens; 124. an optical filter; 125. a Rayleigh scattering filter; 2. an adama transformation detection system; 21. a slit; 22. a collimating mirror; 23. a grating; 24. a first reflector; 25. a micromirror array; 26. a lens group; 27. a detector; 28. a second reflector; 29. a refrigeration device; 3. a control system; 31. a DMD micromirror controller; 32. a signal processor; 33. a light source controller; 34. a main controller; 35. and (4) a computer.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.
Example 1
As shown in fig. 1, a handheld raman spectrometer for fast quantitative detection of oil comprises a light source system 1, an adama transformation detection system 2 and a control system 3;
the light source system 1 is connected with the adama conversion detection system 2, and the control system 3 is respectively and electrically connected with the light source system 1 and the adama conversion detection system 2.
As shown in fig. 2, the light source system 1 includes a laser 11, a light source preprocessing system 12 and an optical fiber 13, the laser 11, the light source preprocessing system 12 and the optical fiber 13 are disposed in a light source system casing, the optical fiber 13 is disposed on one side of the light source system casing and penetrates through the light source system casing, an outlet of the laser 11 is connected to an inlet of the light source preprocessing system 12, an outlet of the light source preprocessing system 12 is connected to an inlet of the optical fiber 13, the light source preprocessing system 12 is used for correcting light emitted by the laser 11, and the light is emitted by the laser 11 and enters the optical fiber through the light source preprocessing system 12.
As shown in fig. 3, the light source pretreatment system 12 includes a first lens 121, an isolator 122, a second lens 123, a filter 124 and a rayleigh scattering filter 125, the first lens 121, the isolator 122, the second lens 123, the filter 124 and the rayleigh scattering filter 125 are disposed in the light source system housing, the outlet of the laser 11 is connected to the inlet of the filter 124, the incident surface of the first lens 121 is connected to the outlet of the filter 124, the emergent surface of the first lens 121 is connected to the inlet of the isolator 122, the outlet of the isolator 122 is connected to the incident surface of the second lens 123, the emergent surface of the second lens 123 is connected to the inlet of the rayleigh scattering filter 125, and the outlet of the rayleigh scattering filter 125.
The laser 11 is a 1064nm +1053nm VCSEL dual wavelength laser.
As shown in fig. 4, the adama conversion detection system 2 includes a slit 21, a collimator 22, a grating 23, a first reflector 24, a micromirror array 25, a lens group 26, a detector 27, and a second reflector 28, wherein an inlet of the slit 21 is connected to an outlet of the optical fiber 13, an outlet of the slit 21 is connected to an inlet of the collimator 22, an outlet of the collimator 22 is connected to a mirror surface of the first reflector 24, a light reflected by the mirror surface of the first reflector 24 is transmitted to the inlet of the grating 23, an outlet of the grating 23 is connected to a mirror surface of the second reflector 28, the second reflector 28 transmits the light to the micromirror array 25, the micromirror array 25 is disposed opposite to the detector 27, and the micromirror array 25 transmits the light to.
The detector 27 employs a CCD.
The slit 21 is used for obtaining a parallel light source with good coherence, the collimating mirror 22 is used for further collimating the light passing through the slit 21, the grating 23 is used for dispersing the light passing through the collimating mirror 22, the first reflecting mirror 24 and the second reflecting mirror 28 are used for reflecting the laser, the micromirror array 25 is used for being electrically connected with the control system 3, the control system 3 is used for adjusting the micromirror array 25 to bear a hadamard transformation matrix, and the lens group 26 is used for collimating the light rays reflected by the micromirror array 25 into parallel light and transmitting the parallel light to the CCD.
The grating 23 is a trochoidal grating. For matching with the Rowland circle structure of the Alda transform detection system 2.
The adama conversion detection system 2 further comprises a refrigerating device 29, the refrigerating device 29 is connected with the CCD, and the refrigerating device 29 is a semiconductor for refrigeration.
In the case where the temperature of the CCD refrigerating apparatus 29 is about-40 ℃, the drying method is used to inhibit the solution. The measures of silica gel desiccant dehumidification, three-stage TEC refrigeration, forced air cooling heat dissipation, power supply of an adjustable current source power supply and the like are adopted, deep refrigeration with the maximum temperature difference exceeding 40 ℃ can be expected to be realized, and condensation and frosting are avoided below-40 ℃.
Three-stage composite electronic refrigeration is selected to realize high efficiency of 1.3W when the temperature of the hot end is 50 ℃ and the temperature difference is 106 ℃. The method is used for realizing low-noise detection and freezing point detection.
As shown in fig. 5, the control system 3 includes a DMD micro-mirror controller 31, a signal processor 32, a light source controller 33, a main controller 34, and a computer 35, the DMD micro-mirror controller 31, the signal processor 32, and the light source controller 33 are all connected to the main controller 34, the main controller 34 is connected to the computer 35, the signal processor 32 is connected to the CCD, the light source controller 33 is connected to the laser 11, the DMD micro-mirror controller 31 is used to control the rotation of the micro-mirror array 25 to make the state of each micro-mirror in the micro-mirror array 25 consistent with the state of the matrix template in the DMD micro-mirror controller 31, the signal processor 32 is used to receive the spectrum picked up by the CCD and transmit the intensity information of the spectrum to the main controller 34, the light source controller 33 is used to control the laser 11, the main controller 34 is used to control the states of the DMD controller 31, and transmitted to the computer 35, and the computer 35 is used to provide feedback information for analyzing the content of the specific element in the oil sample.
The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.
Claims (7)
1. The utility model provides a handheld raman spectroscopy appearance of quick quantitative determination of oil which characterized in that: comprises a light source system (1), an adama conversion detection system (2) and a control system (3);
the light source system (1) is mechanically connected with the adam conversion detection system (2), and the control system (3) is electrically connected with the light source system (1) and the adam conversion detection system (2) respectively;
the light source system (1) comprises a laser (11), a light source pretreatment system (12) and an optical fiber (13), the laser (11), the light source pretreatment system (12) and the optical fiber (13) are arranged in a light source system shell, the optical fiber (13) is arranged on one side of the light source system shell and penetrates through the light source system shell, an outlet of the laser (11) is connected with an inlet of the light source pretreatment system (12), an outlet of the light source pretreatment system (12) is connected with an inlet of the optical fiber (13), the light source pretreatment system (12) is used for correcting light rays emitted by the laser (11), the light rays are emitted by the laser (11) and enter the optical fiber through the light source pretreatment system (12);
the light source pretreatment system (12) comprises a first lens (121), an isolator (122) and a second lens (123), wherein the first lens (121), the isolator (122) and the second lens (123) are arranged in the light source system shell, the incident surface of the first lens (121) is connected with the outlet of the laser (11), the emergent surface of the first lens (121) is connected with the inlet of the isolator (122), the outlet of the isolator (122) is connected with the incident surface of the second lens (123), and the emergent surface of the second lens (123) is connected with the inlet of the optical fiber (13);
the light rays are emitted by the laser (11) and sequentially pass through the first lens (121), the isolator (122) and the second lens (123) to enter the optical fiber (13).
2. The handheld Raman spectrometer for rapid quantitative detection of oil according to claim 1, wherein: the light source pretreatment system (12) further comprises an optical filter (124) and a Rayleigh scattering filter (125), the optical filter (124) and the Rayleigh scattering filter (125) are arranged in the light source system shell, the optical filter (124) is arranged between the laser (11) and the first lens (121), and the Rayleigh scattering filter (125) is arranged between the optical fiber (13) and the second lens (123).
3. The hand-held raman spectrometer for rapid quantitative detection of oil according to any one of claims 1 or 2, wherein: the adama transformation detection system (2) comprises a slit (21), a collimating mirror (22), a grating (23), a first reflecting mirror (24), a micro-mirror array (25), a lens group (26), a detector (27) and a second reflecting mirror (28), the entrance of the slit (21) is connected with the exit of the optical fiber (13), the exit of the slit (21) is connected with the entrance of the collimating mirror (22), the outlet of the collimating mirror (22) is connected with the mirror surface of the first reflecting mirror (24), the first reflector (24) reflects the light to the entrance of the grating (23), the exit of the grating (23) is connected with the mirror surface of the second reflector (28), the second reflector (28) transmits the light to the micro-mirror array (25), the micromirror array (25) is disposed opposite the detector (27), and the micromirror array (25) transmits the light to the detector (27).
4. The handheld Raman spectrometer for rapid quantitative detection of oil according to claim 3, wherein: the grating (23) is a pan-cycloid grating.
5. The handheld Raman spectrometer for rapid quantitative detection of oil according to claim 1, wherein: the laser (11) is a dual-wavelength laser, and the dual-wavelength laser is used for emitting first wavelength laser and/or second wavelength laser with different wavelengths.
6. The handheld Raman spectrometer for rapid quantitative detection of oil according to claim 3, wherein: the control system (3) comprises a DMD micro-mirror controller (31), a signal processor (32), a light source controller (33), a main controller (34) and a computer (35), the DMD micro-mirror controller (31), the signal processor (32) and the light source controller (33) are connected with the main controller (34), the main controller (34) is connected with the computer (35), the signal processor (32) is connected with the detector (27), the light source controller (33) is connected with the laser (11), the DMD micro-mirror controller (31) is used for controlling the rotation of the micro-mirror array (25) to enable the state of each micro-mirror in the micro-mirror array (25) to be consistent with the state of a matrix template in the micro-mirror controller (31), and the signal processor (32) is used for receiving the spectrum picked up by the detector (27), and the intensity information of the spectrum is transmitted to the main controller (34), the light source controller (33) is used for controlling the laser (11), the main controller (34) is used for controlling the states of the DMD micro-mirror controller (31), the signal processor (32) and the light source controller (33), receiving feedback information and transmitting the feedback information to the computer (35), and the computer (35) is used for providing the feedback information to analyze the content of the specific element in the oil sample.
7. The handheld Raman spectrometer for rapid quantitative detection of oil according to claim 3, wherein: the adama conversion detection system (2) further comprises a refrigerating device (29), the refrigerating device (29) is fixedly connected with the detector (27), and the refrigerating device (29) is used for semiconductor refrigeration.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020890605.3U CN213148741U (en) | 2020-05-25 | 2020-05-25 | Handheld Raman spectrometer for rapid quantitative detection of oil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020890605.3U CN213148741U (en) | 2020-05-25 | 2020-05-25 | Handheld Raman spectrometer for rapid quantitative detection of oil |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213148741U true CN213148741U (en) | 2021-05-07 |
Family
ID=75723861
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020890605.3U Active CN213148741U (en) | 2020-05-25 | 2020-05-25 | Handheld Raman spectrometer for rapid quantitative detection of oil |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213148741U (en) |
-
2020
- 2020-05-25 CN CN202020890605.3U patent/CN213148741U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP1830174B1 (en) | Multi-channel fluorescence sample analyzer | |
| EP2188604B1 (en) | Spectrometer for measuring moving sample material and the method | |
| US20100007876A1 (en) | Hollow-core waveguide-based raman systems and methods | |
| US20120099102A1 (en) | Dual and multi-wavelength sampling probe for raman spectroscopy | |
| US6028667A (en) | Compact and robust spectrograph | |
| CN105784682A (en) | Detection device and detection method by laser induced breakdown spectroscopy | |
| JP2011075513A (en) | Gas spectroscopic analysis device | |
| US5428222A (en) | Spectral analyzer with new high efficiency collection optics and method of using same | |
| CN110763671B (en) | Small-sized frequency shift excitation Raman detection device | |
| US7574089B1 (en) | Optofluidic devices and methods of using the same | |
| CN111982884A (en) | Compact 266nm shortwave ultraviolet Raman spectrometer | |
| CN109520944A (en) | A kind of universal spectroscopic analysis system | |
| CN110793954A (en) | Portable Raman blood identification system based on echelle grating | |
| JP2807777B2 (en) | Optical absorption spectrum measuring device using slab optical waveguide | |
| CN213148741U (en) | Handheld Raman spectrometer for rapid quantitative detection of oil | |
| CN212111146U (en) | Portable Raman blood identification system based on echelle grating | |
| US5673109A (en) | System and method for increasing the efficiency of a raman gas analysis system | |
| USRE36489E (en) | Spectral analyzer with new high efficiency collection optics and method of using same | |
| KR100404071B1 (en) | Apparatus for protein chip analysis using a white-light SPR | |
| US20150208957A1 (en) | Transmission-Reflectance Swappable Raman Probe for Physiological Detections | |
| CN113203727B (en) | Spectrum measuring device and method | |
| WO2022174485A1 (en) | Spectrometer detection device | |
| CN212514221U (en) | Full-spectrum miniature optical fiber spectrometer | |
| CN101446546A (en) | Dispersion direct reading spectroscopic detector | |
| JP2000131145A (en) | Spectrochemical analysis device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |