CN205506682U - Multi -functional SPR detector - Google Patents
Multi -functional SPR detector Download PDFInfo
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- CN205506682U CN205506682U CN201620307146.5U CN201620307146U CN205506682U CN 205506682 U CN205506682 U CN 205506682U CN 201620307146 U CN201620307146 U CN 201620307146U CN 205506682 U CN205506682 U CN 205506682U
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Abstract
The utility model relates to a multi -functional SPR detector, including incident system, rotational system and the detecting system who connects gradually, the incident light that the incident system sent finally reachs detecting system behind rotational system, multi -functional SPR detector is still including being used for carrying out the angle calibration system that marks to the incident angle of incident light, angle calibration system is connected with rotational system and detecting system respectively. Multi -functional SPR detector can realize angle and wavelength modulation, when with angle modulation mode during operation, can conveniently change the incident light source, improved measuring stability and convenience, when with wavelength modulation mode during operation, can obtain a series of wavelength resonance spectrum corresponding to different incident angles.
Description
Technical field
This utility model relates to photoelectric detection technology field, more particularly, to a kind of multi-functional SPR detector.
Background technology
Detection technique based on surface plasma resonance (Surface Plasmon Resonance, SPR) effect, its topmost application is the dielectric constant of detection medium.Dielectric constant is one of medium physical parameter most basic, most important.Reacting to each other etc. between the component of material, material often can be reflected by the change of the dielectric permittivity that is associated.Since the eighties in last century, detection technique based on SPR effect development is very swift and violent, during this technology has been widely used in the fields such as physics, biology, chemistry, environmental protection, medical science at present.In recent years, people do a lot of work in terms of the exploitation optimizing design and instrumentation of SPR detector structure.At present, the research work of this respect is still hot subject.
SPR detector includes angle modulation type, many employing monochromatic light are as light source, automatically controlled turntable pointwise is used to carry out mechanical scanning, utilize photodetector that reflective light intensity is detected, by analyzing the position of the resonant angle that intensity minimum point is corresponding in reflectance spectrum, realizing the measurement of testing medium refractive index, single angle scanning can only obtain a spectral line.Owing to angle modulation type SPR detector cannot be carried out wavelength-modulated, therefore measurement result cannot be compared with wavelength-modulated measurement result in identical device easily, thus the accuracy of data cannot be ensured well.
Utility model content
In order to overcome above the deficiencies in the prior art, this utility model provides a kind of multi-functional SPR detector being capable of angle and wavelength-modulated.
For solving prior art problem, the technical solution adopted in the utility model is:
A kind of multi-functional SPR detector, including the incidence system being sequentially connected with, rotation system and detecting system, the incident illumination that described incidence system sends eventually arrives at detecting system after rotation system；Described multi-functional SPR detector also includes that the angle calibration system for demarcating the incident angle of incident illumination, described angle calibration system are connected with rotation system and detecting system respectively.This utility model, owing to arranging incidence system, rotation system and detecting system, when incidence system uses monochromater, under the cooperation of rotation system, can obtain normalized SPR angle modulation spectral line；When incidence system uses wideband light source, under the cooperation of rotation system, permissible obtains a series of normalized SPR wavelength-modulated spectral line, thus realizes angle and wavelength-modulated.
Described incidence system includes wideband light source, laser diode module, the first fiber coupling lens, the second fiber coupling lens, fiber coupler, parabolic reflector formula collimator, polarizing prism, adjustable diaphragm, unpolarized Amici prism and the first runner, and described unpolarized Amici prism is arranged on the first runner；
When carrying out wavelength-modulated, the incident illumination that wideband light source is launched passes sequentially through the second fiber coupling lens, fiber coupler, parabolic reflector formula collimator, polarizing prism, adjustable diaphragm and unpolarized Amici prism and injects rotation system；When carrying out angle modulation or angle calibration, the incident illumination that laser diode module is launched passes sequentially through the first fiber coupling lens, fiber coupler, parabolic reflector formula collimator, polarizing prism, adjustable diaphragm and unpolarized Amici prism and injects rotation system.
Further, described incidence system is additionally provided with the first electronic control translation stage, described parabolic reflector formula collimator, polarizing prism, adjustable diaphragm and the first runner use cage coaxial construction to be arranged on the first electronic control translation stage, and the mechanical stability of device is greatly improved, and easy to adjust fast.
Further, the interface that described parabolic reflector formula collimator docks with fiber coupler uses SMA, FC/PC or FC/APC optical fiber input interface.
Described rotation system includes automatically controlled turntable and the rhombic prism being arranged on automatically controlled turntable, described rhombic prism one side is provided with the film system exciting SPR effect, the incident ray entering rotation system occurs to launch and penetrate after refraction inside rhombic prism, enters detecting system.
Described detecting system includes the second electronic control translation stage, reflecting mirror, the second runner, the 3rd fiber coupling lens and fiber spectrometer, and described reflecting mirror is arranged on the second runner, and described second runner and the 3rd fiber coupling lens are arranged on the second electronic control translation stage；The incident illumination of entrance detecting system exposes to reach fiber spectrometer after passing sequentially through reflecting mirror and the 3rd fiber coupling lens, and described fiber spectrometer is connected with background computer.
Further, described detecting system also includes the first achromat, the second achromat, the 3rd achromat, the first photodetector, the second photodetector, the 3rd photodetector and data collecting card；The part emergent light of incidence system exposes to the first photodetector by the first achromat, the part emergent light of rotation system exposes to the second photodetector by the second achromat, and the part emergent light of detecting system exposes to the 3rd photodetector by the 3rd achromat；Described first photodetector, the second photodetector and the 3rd photodetector are connected with data collecting card respectively, and described data collecting card is connected with background computer.
Described multi-functional SPR detector is additionally provided with the stepper motor driver for driving the first electronic control translation stage, the second electronic control translation stage and automatically controlled turntable to be operated, and described stepper motor driver is connected with background computer.
Compared with prior art, the beneficial effects of the utility model are:
This utility model has redesigned structure and light path, it is achieved that a SPR detector can be not only used for angular modulation system, can be used for again wavelength-modulated mode, uses cage coaxial construction can improve the mechanical stability of device simultaneously；When working with angular modulation system, it is convenient to change incident light source, be not required to adjust whole incidence system, improve stability and the convenience of measurement；When working in wavelength-modulated mode, it is possible to obtain a series of wave resonance spectrum corresponding to different incidence angles degree, obtain corresponding to the angle modulation spectral line of each wavelength in spectrum simultaneously, it is possible to characterize the film system being used for exciting SPR effect conveniently and efficiently.
Accompanying drawing explanation
Fig. 1 is the structural representation of this utility model embodiment.
Detailed description of the invention
Below in conjunction with accompanying drawing, this utility model is further explained explanation.Accompanying drawing being merely cited for property explanation, it is impossible to be interpreted as restriction of the present utility model；In order to the present embodiment is more preferably described, some parts of accompanying drawing have omission, zoom in or out；To those skilled in the art, in accompanying drawing, some known features and explanation thereof may will be understood by omission.
As shown in Figure 1, a kind of multi-functional SPR detector, including incidence system, rotation system, detecting system and angle calibration system, described incidence system includes wideband light source 5, laser diode module the 6, first fiber coupling lens the 7, second fiber coupling lens 8, fiber coupler 9, parabolic reflector formula collimator 10, polarizing prism 11, adjustable diaphragm 12, unpolarized Amici prism 13 and the first runner 14, and described unpolarized Amici prism 13 is arranged on the first runner 14；When carrying out wavelength-modulated, the incident illumination launched by wideband light source 5 exposes to fiber coupler 9 by the second fiber coupling lens 8, when carrying out angle modulation, the incident illumination that laser diode module 6 is launched exposes to fiber coupler 9 by the first fiber coupling lens 7；Then incident illumination injects rotation system after passing sequentially through parabolic reflector formula collimator 10, polarizing prism 11, adjustable diaphragm 12 and unpolarized Amici prism 13.Described incidence system is additionally provided with the first electronic control translation stage 15, and described parabolic reflector formula collimator 10, polarizing prism 11, adjustable diaphragm 12 and the first runner 14 use cage coaxial construction to be arranged on the first electronic control translation stage 15.The interface that described parabolic reflector formula collimator 10 docks with fiber coupler 9 uses SMA fiber input interface.
Described rotation system includes automatically controlled turntable 16 and the rhombic prism 32 being arranged on automatically controlled turntable 16.In the present embodiment, described rhombic prism 32 has the first the 1, second side the 2, the 3rd, side side 3 and the 4th side 4, and the first side 1 is provided with the film system 17 exciting SPR effect.
Described detecting system includes the second electronic control translation stage 28, reflecting mirror the 25, second runner the 26, the 3rd fiber coupling lens 27 and fiber spectrometer 29, described reflecting mirror 25 is arranged on the second runner 26, and described second runner 26 and the 3rd fiber coupling lens 27 are arranged on the second electronic control translation stage 28；The incident illumination of entrance detecting system exposes to reach fiber spectrometer 29 after passing sequentially through reflecting mirror 25 and the 3rd fiber coupling lens 27, and described fiber spectrometer 29 is connected with background computer 31.
Described detecting system also includes the first achromat the 19, second achromat the 20, the 3rd achromat the 22, first photodetector the 18, second photodetector the 21, the 3rd photodetector 23 and data collecting card 24,
The part emergent light of incidence system exposes to the first photodetector 18 by the first achromat 19, the part emergent light of rotation system exposes to the second photodetector 21 by the second achromat 20, and the part emergent light of detecting system exposes to the 3rd photodetector 23 by the 3rd achromat 22；Described first photodetector the 18, second photodetector 21 and the 3rd photodetector 23 are connected with data collecting card 24 respectively, and described data collecting card 24 is connected with background computer 31.
Described multi-functional SPR detector is additionally provided with the stepper motor driver 30 for driving first electronic control translation stage the 15, second electronic control translation stage 28 and automatically controlled turntable 16 to be operated, and described stepper motor driver 30 is connected with background computer 31.
When carrying out angle modulation, after demarcating angle value, laser diode module launches the laser of a certain centre wavelength, by two electronic control translation stages of regulation, make incident light beam strikes to the film system 17 exciting SPR effect, voltage data is gathered then as rotation system scanning incident angle, detecting system, reflect and effect of dispersion by calculating rhombic prism 32 surface, angle modulation spectral line R (θ) that the corresponding relation between incident angle θ and normalized reflectance R by rhombic prism 32 first side 1 is constituted may finally be obtained.
When carrying out wavelength-modulated, after demarcating angle value, select wideband light source 5, the first electronic control translation stage 15 in regulation incidence system, make incident illumination after refraction by prism, incide in the film system 17 exciting SPR effect, second electronic control translation stage 28 of detecting system translates accordingly, then as rotation system scanning incident angle progressively, fiber spectrometer 29 gathers spectrum, the a series of Wavelength modulation spectroscopies corresponding to angle of incidence values can be obtained, the reflection of rhombic prism 32 surface and effect of dispersion is revised by calculating, Wavelength modulation spectroscopy is divided by reference spectra, a series of normalized reflectance spectrum R (λ) of incident angle θ corresponding to rhombic prism 32 first side 1 may finally be obtained.
Obviously, above-described embodiment of the present utility model is only for clearly demonstrating this utility model example, and is not the restriction to embodiment of the present utility model.Can also make other changes in different forms on the basis of the above description, here without also cannot all of embodiment be given exhaustive.All any amendment, equivalent and improvement etc. made within spirit of the present utility model and principle, within should be included in this utility model scope of the claims.
Claims (8)
1. a multi-functional SPR detector, it is characterised in that include incidence system, rotation system and the detecting system being sequentially connected with, the incident illumination that described incidence system sends eventually arrives at detecting system after rotation system；Described multi-functional SPR detector also includes that the angle calibration system for demarcating the incident angle of incident illumination, described angle calibration system are connected with rotation system and detecting system respectively.
Multi-functional SPR detector the most according to claim 1, it is characterized in that, described incidence system includes that wideband light source (5), laser diode module (6), the first fiber coupling lens (7), the second fiber coupling lens (8), fiber coupler (9), parabolic reflector formula collimator (10), polarizing prism (11), adjustable diaphragm (12), unpolarized Amici prism (13) and the first runner (14), described unpolarized Amici prism (13) are arranged on the first runner (14)；
The incident illumination that wideband light source (5) is launched passes sequentially through the second fiber coupling lens (8), fiber coupler (9), parabolic reflector formula collimator (10), polarizing prism (11), adjustable diaphragm (12) and unpolarized Amici prism (13) and injects rotation system；The incident illumination that laser diode module (6) is launched passes sequentially through the first fiber coupling lens (7), fiber coupler (9), parabolic reflector formula collimator (10), polarizing prism (11), adjustable diaphragm (12) and unpolarized Amici prism (13) and injects rotation system.
Multi-functional SPR detector the most according to claim 2, it is characterized in that, described incidence system is additionally provided with the first electronic control translation stage (15), and described parabolic reflector formula collimator (10), polarizing prism (11), adjustable diaphragm (12) and the first runner (14) use cage coaxial construction to be arranged on the first electronic control translation stage (15).
Multi-functional SPR detector the most according to claim 3, it is characterised in that the interface that described parabolic reflector formula collimator (10) is docked with fiber coupler (9) uses SMA, FC/PC or FC/APC optical fiber input interface.
5. according to the multi-functional SPR detector described in any one of Claims 1-4, it is characterized in that, described rotation system includes automatically controlled turntable (16) and the rhombic prism (32) being arranged on automatically controlled turntable (16), and described rhombic prism (32) one side is provided with the film system (17) exciting SPR effect.
6. according to the multi-functional SPR detector described in any one of Claims 1-4, it is characterized in that, described detecting system includes the second electronic control translation stage (28), reflecting mirror (25), the second runner (26), the 3rd fiber coupling lens (27) and fiber spectrometer (29), described reflecting mirror (25) is arranged on the second runner (26), and described second runner (26) and the 3rd fiber coupling lens (27) are arranged on the second electronic control translation stage (28)；The incident illumination of entrance detecting system exposes to reach fiber spectrometer (29) after passing sequentially through reflecting mirror (25) and the 3rd fiber coupling lens (27), and described fiber spectrometer (29) is connected with background computer (31).
Multi-functional SPR detector the most according to claim 6, it is characterized in that, described detecting system also includes the first achromat (19), second achromat (20), 3rd achromat (22), first photodetector (18), second photodetector (21), 3rd photodetector (23) and data collecting card (24), the part emergent light of incidence system exposes to the first photodetector (18) by the first achromat (19), the part emergent light of rotation system exposes to the second photodetector (21) by the second achromat (20), the part emergent light of detecting system exposes to the 3rd photodetector (23) by the 3rd achromat (22)；Described first photodetector (18), the second photodetector (21) and the 3rd photodetector (23) are connected with data collecting card (24) respectively, and described data collecting card (24) is connected with background computer (31).
Multi-functional SPR detector the most according to claim 6, it is characterized in that, being additionally provided with the stepper motor driver (30) for driving the first electronic control translation stage (15), the second electronic control translation stage (28) and automatically controlled turntable (16) to be operated, described stepper motor driver (30) is connected with background computer (31).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620307146.5U CN205506682U (en) | 2016-04-12 | 2016-04-12 | Multi -functional SPR detector |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620307146.5U CN205506682U (en) | 2016-04-12 | 2016-04-12 | Multi -functional SPR detector |
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| CN205506682U true CN205506682U (en) | 2016-08-24 |
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| CN201620307146.5U Withdrawn - After Issue CN205506682U (en) | 2016-04-12 | 2016-04-12 | Multi -functional SPR detector |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105699335A (en) * | 2016-04-12 | 2016-06-22 | 岭南师范学院 | Multifunctional SPR (surface plasmon resonance) detector |
-
2016
- 2016-04-12 CN CN201620307146.5U patent/CN205506682U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105699335A (en) * | 2016-04-12 | 2016-06-22 | 岭南师范学院 | Multifunctional SPR (surface plasmon resonance) detector |
| CN105699335B (en) * | 2016-04-12 | 2019-01-04 | 岭南师范学院 | A kind of multi-functional SPR detector |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20160824 Effective date of abandoning: 20190104 |
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| AV01 | Patent right actively abandoned |