CN104833642A - Liquid light transmitting property measurement device with adjustable optical path - Google Patents
Liquid light transmitting property measurement device with adjustable optical path Download PDFInfo
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- CN104833642A CN104833642A CN201510259214.5A CN201510259214A CN104833642A CN 104833642 A CN104833642 A CN 104833642A CN 201510259214 A CN201510259214 A CN 201510259214A CN 104833642 A CN104833642 A CN 104833642A
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Abstract
The invention provides a liquid light transmitting property measurement device with an adjustable optical path. The liquid light transmitting property measurement device comprises a base, an optical path adjusting platform, an incidence optical fiber with a collimating lens, an outgoing optical fiber with a collimating lens, a light source and a detector, wherein one end of the incidence optical fiber is connected with a light source, and the other end of the incidence optical fiber and the outgoing optical fiber are oppositely arranged on an optical fiber upper platform through the collimating lens; one end of the outgoing optical fiber and the incidence optical fiber are oppositely arranged on an optical fiber lower platform through the collimating lens, and the other end of the outgoing optical fiber is connected with the detector; the optical fiber upper platform is provided with an upper optical fiber light-emitting hole with sealed protection glass; the optical fiber lower platform is provided with a lower optical fiber light-emitting hole with sealed protection glass; and a solution storage cover for storing a solution is mounted between the upper optical fiber light-emitting hole and the lower optical fiber light-emitting hole, and a relatively sealed liquid bearing platform is formed among the upper optical fiber light-emitting hole, the lower optical fiber light-emitting hole and the solution storage cover. By virtue of the liquid light transmitting property measurement device, the measurement range and precision are improved, the optical path can be adjusted and the structure is reasonable and simple.
Description
Technical field
The present invention relates to optics of liquids Characteristics Detection field, particularly relate to the liquid light transmission features measurement mechanism that a kind of light path is adjustable.
Background technology
By testing the method for the characteristic research solution properties to be measured of transmitted light, no matter be at field of scientific studies such as physics, chemistry, biology, medical science, materialogy, environmentologys, or have extensive and important application in the modern production such as chemical industry, medicine, environment measuring, metallurgy and administrative authority.At present, most optics of liquids testing tool (such as spectrophotometer) is all take cuvette structure, and the light path of this structured testing light in solution to be measured is fixing, thus limits measurement range and the measuring accuracy of this quasi-instrument.The micro-spectrophotometer that existing a kind of light path is adjustable, by regulating the height of the fluid column relying on surface tension of liquid to be formed, improves the measurement range of instrument.The main deficiency that this structure exists is: (1) some surface tension of liquid is not enough, does not become fluid column; (2) surface tension of liquid is limited, when liquid column length is more than 1mm, and as easy as rolling off a log fracture; (3) fiber outlet lacks collimation lens, and between upper and lower optical fiber, coupling efficiency is low; (4) the liquid highly volatile of protective cover is lacked, thus impact test effect.
Summary of the invention
The invention provides and a kind ofly improve measurement range and precision, light path is adjustable, simple light path rational in infrastructure is adjustable liquid light transmission features measurement mechanism.
The technical solution used in the present invention is:
The liquid light transmission features measurement mechanism that a kind of light path is adjustable, comprise base, light path regulates platform, with the incident optical of collimation lens, with the outgoing optical fiber of collimation lens, light source and detector, it is characterized in that: one end of described incident optical is connected with light source, its other end by collimation lens relative with outgoing optical fiber be arranged on optical fiber upper mounting plate, one end of described outgoing optical fiber by collimation lens relative with incident optical be arranged on optical fiber lower platform, its other end is connected with detector, described optical fiber upper mounting plate is provided with the upper optical fiber light-emitting window of band seal protection glass, described optical fiber lower platform is provided with the lower optical fiber light inlet of band seal protection glass, the solution protective cover of depositing solution is installed between described upper optical fiber light-emitting window and lower optical fiber light inlet and form a relative closure each other hold liquid platform.What solution to be measured of the present invention was stored in relative closure holds in liquid platform, also can form very large liquid-column height, decrease the adverse effect evaporated to test result simultaneously, can improve measurement range and precision without the need to surface tension.And optical fiber upper mounting plate can move up and down, thus the light path of test light through solution to be measured can be changed, realize light path adjustable, improve measurement range and precision.No matter incident optical or outgoing optical fiber are all with collimation lens, greatly promote coupling efficiency between upper and lower optical fiber, greatly increase the adjustable extent of light path, also can improve measurement range and precision.
Further, described incident optical is a y-type optical fiber, simultaneously through the light of 200-2000nm, can realize double light path (with reference to solution and test solution) and synchronously detect, also can change monochromatic light road or multi-pass into.
Further, described outgoing optical fiber is a y-type optical fiber, respectively by the light through 200-800 and 800-2000nm, realizes ultraviolet, visible and near infrared spectrum measures simultaneously.
Further, described solution protective cover is dismountable to be arranged on lower optical fiber light-emitting window, and solution protective cover upper end size is greater than optical fiber light-emitting window lower end size.The dismountable setting of solution protective cover; breaking away from existing micro-spectrophotometer utilizes surface tension to form the deficiency of fluid column existence; testing liquid be stored in surround by the lower optical fiber light inlet of the upper optical fiber light-emitting window of band seal protection glass, band seal protection glass and solution protective cover the opposing seal formed hold in liquid platform; also very large liquid-column height can be formed without the need to surface tension; decrease the adverse effect evaporated to test result simultaneously, therefore can greatly improve measurement range and precision.
Further, described detector comprises ultraviolet-visual spectrometer and infrared spectrometer, the synchronism detection while of realizing multispectral.
Beneficial effect of the present invention: driven by motor light path can be utilized to regulate platform to move up and down; thus change the light path of test light testing liquid in protective cover; testing liquid is stored in the space of the opposing seal be made up of incident optical head, outgoing optical fiber head and protective cover; also very large liquid-column height can be formed without the need to surface tension; decrease the adverse effect evaporated to test result simultaneously, measurement range and precision can be improved.The use of collimation lens promotes coupling efficiency between upper and lower optical fiber greatly, greatly increases the adjustable extent of light path, also can improve measurement range and precision.The synchronism detection while that the use of y-type optical fiber can realizing double light path (with reference to solution and test solution) and multispectral (ultraviolet, visible, infrared), therefore can improve measurement range and precision again.
Accompanying drawing explanation
Fig. 1 is theory structure block diagram of the present invention.
Fig. 2 is vibrational power flow figure of the present invention.
Fig. 3 is structure left view of the present invention.
Fig. 4 is the enlarged diagram holding liquid platform of the present invention.
Embodiment
Below in conjunction with specific embodiment, the present invention is further described, but does not limit the invention to these embodiments.One skilled in the art would recognize that all alternativess, improvement project and the equivalents that present invention encompasses and may comprise in Claims scope.
With reference to Fig. 1-4, the liquid light transmission features measurement mechanism that a kind of light path is adjustable, comprise base 1, light path regulates platform, incident optical 4 with collimation lens 81, with the outgoing optical fiber 5 of collimation lens 85, light source 6 and detector 7, described light path regulates platform to comprise moveable optical fiber upper mounting plate 2, optical fiber lower platform 9 is provided with immediately below described optical fiber upper mounting plate 2, described optical fiber lower platform 9 is arranged on base 1, one end of described incident optical 4 is connected with light source 6, its other end by collimation lens 81 relative with outgoing optical fiber 5 be arranged on optical fiber upper mounting plate 2, one end of described outgoing optical fiber 5 by collimation lens 85 relative with incident optical 4 be arranged on optical fiber lower platform 9, its other end is connected with detector 7, described optical fiber upper mounting plate 2 is provided with the upper optical fiber light-emitting window 82 of band seal protection glass, described optical fiber lower platform 9 is provided with the lower optical fiber light inlet 84 of band seal protection glass, the solution protective cover 83 of depositing solution is installed between described upper optical fiber light-emitting window 82 and lower optical fiber light inlet 84 and form a relative closure each other hold liquid platform 8.What solution to be measured 86 of the present invention was stored in relative closure holds in liquid platform 8, also can form very large liquid-column height, decrease the adverse effect evaporated to test result simultaneously, can improve measurement range and precision without the need to surface tension.And optical fiber upper mounting plate 2 can move up and down, thus the light path of test light through solution to be measured can be changed, realize light path adjustable, improve measurement range and precision.No matter incident optical 4 or outgoing optical fiber 5 are all with collimation lens, greatly promote coupling efficiency between upper and lower optical fiber, greatly increase the adjustable extent of light path, also can improve measurement range and precision.
The motor 3 that described in the present embodiment, upper fiber platform 2 and drives it to move up and down is connected, and described motor 3 is arranged on regulating arm 10, and described regulating arm 10 is connected with upper fiber platform 2 is vertical.
Incident optical 4 described in the present embodiment is y-type optical fibers, simultaneously through the light of 200-2000nm, can realize double light path (with reference to solution and test solution) and synchronously detect, also can change monochromatic light road or multi-pass into.Described outgoing optical fiber is a y-type optical fiber, respectively by the light through 200-800 and 800-2000nm, realizes ultraviolet, visible and near infrared spectrum measures simultaneously.
Solution protective cover 83 described in the present embodiment is dismountable to be arranged on lower optical fiber light inlet 84, and solution protective cover 83 upper end size is greater than optical fiber light-emitting window 82 lower end size.The dismountable setting of solution protective cover 83; breaking away from existing micro-spectrophotometer utilizes surface tension to form the deficiency of fluid column existence; solution 86 to be measured be stored in surround by the lower optical fiber light inlet 84 of the upper optical fiber light-emitting window 82 of band seal protection glass, band seal protection glass and solution protective cover 83 opposing seal formed hold in liquid platform 8; also very large liquid-column height can be formed without the need to surface tension; decrease the adverse effect evaporated to test result simultaneously, therefore can greatly improve measurement range and precision.
Described in the present embodiment, detector 7 comprises ultraviolet-visual spectrometer and infrared spectrometer, the synchronism detection while of realizing multispectral.
When the present invention works, motor 3 can be utilized to drive optical fiber upper mounting plate 2 to move up and down, thus change the light path of test light solution 86 to be measured in solution protective sleeve 83, when solution extinction characteristic is stronger, motor 3 drives optical fiber upper mounting plate 2 to move down, and shortens test light path; When solution extinction characteristic is more weak, motor 3 drives optical fiber upper mounting plate 2 to move up, and increases test light path.Meanwhile, incident optical 4, outgoing optical fiber 5 are coupled by collimation lens, can promote the scope that light path regulates, therefore with traditional based on cuvette photometer measurement mode with there is no the pattern of collimation lens and compare, this device can improve measurement range and precision.
In this device, the function of incident optical 4 and outgoing optical fiber 5 is by the exchange of conversion with the annexation practical function of light source 6 and detector 7, solution protective cover 83 is that dismountable compact siro spinning technology (such as adopts screw thread with the connection of the lower optical fiber light inlet 84 of seal protection glass, or use flexible material can the surface of optical fiber light inlet 84 under being enclosed within tightly), both can prevent the solution in solution protective cover 83 from oozing out, disassemble easily again, thus upper and lower optical fiber head can be cleaned easily, solution protective cover 83 can be disposable also can be can reusable structure after cleaning.Solution protective cover 83 does not contact with the upper optical fiber light-emitting window 82 of band seal protection glass; and make the inside diameter of solution protective cover 83 slightly larger than the external diameter of the upper optical fiber light-emitting window 82 of band seal protection glass; should ensure that the upper optical fiber light-emitting window 82 of band seal protection glass can move up and down freedom in solution protective cover 83; ensure that again the gap between the upper optical fiber light-emitting window 82 of band seal protection glass and solution protective cover 83 is little as much as possible, reduce the volatilization of solution to be measured in solution protective cover 83 in test process as far as possible.
Incident optical 4 and outgoing optical fiber 5 can be two right, also can be a pair or multipair, if two to or more multipair optical fiber head, then can arrange to be used for for a pair blank testing solution contrasts, and remaining is used for testing solution to be measured, improves and measures efficiency.
Claims (5)
1. the liquid light transmission features measurement mechanism that a light path is adjustable, comprise base, light path regulates platform, with the incident optical of collimation lens, with the outgoing optical fiber of collimation lens, light source and detector, it is characterized in that: one end of described incident optical is connected with light source, its other end by collimation lens relative with outgoing optical fiber be arranged on optical fiber upper mounting plate, one end of described outgoing optical fiber by collimation lens relative with incident optical be arranged on optical fiber lower platform, its other end is connected with detector, described optical fiber upper mounting plate is provided with the upper optical fiber light-emitting window of band seal protection glass, described optical fiber lower platform is provided with the lower optical fiber light inlet of band seal protection glass, the solution protective cover of depositing solution is installed between described upper optical fiber light-emitting window and lower optical fiber light inlet and form a relative closure each other hold liquid platform.
2. the liquid light transmission features measurement mechanism that a kind of light path as claimed in claim 1 is adjustable, is characterized in that: described incident optical is a y-type optical fiber, can simultaneously through the light of 200-2000nm.
3. the liquid light transmission features measurement mechanism that a kind of light path as claimed in claim 1 is adjustable, it is characterized in that: described outgoing optical fiber is a y-type optical fiber, respectively by the light through 200-800 and 800-2000nm, realize ultraviolet, visible and near infrared spectrum measures simultaneously.
4. the liquid light transmission features measurement mechanism that a kind of light path as claimed in claim 1 is adjustable, is characterized in that: described solution protective cover is dismountable to be arranged on lower optical fiber light-emitting window, and solution protective cover upper end size is greater than optical fiber light-emitting window lower end size.
5. the liquid light transmission features measurement mechanism that a kind of light path as described in one of claim 1 ~ 4 is adjustable, is characterized in that: described detector comprises ultraviolet-visual spectrometer and infrared spectrometer.
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Cited By (7)
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| CN107677607A (en) * | 2017-04-17 | 2018-02-09 | 中国科学院宁波材料技术与工程研究所 | A kind of adjustable liquid cell of light path |
| CN108226078A (en) * | 2018-02-11 | 2018-06-29 | 中国环境科学研究院 | The adjustable ultraviolet-visible spectrum in-situ monitoring device of light path and multi-parameter water-quality measuring method |
| CN111272683A (en) * | 2020-03-07 | 2020-06-12 | 广东海洋大学 | Liquid absorption coefficient measuring device and measuring method |
| CN112304878A (en) * | 2019-07-30 | 2021-02-02 | 杭州米欧仪器有限公司 | Spectrophotometer optical fiber head assembly, photometer and method for measuring solution concentration |
| CN113008838A (en) * | 2021-03-17 | 2021-06-22 | 华北电力大学 | Optical cavity, heating cavity, measuring device and liquid medium transmission spectrum measuring system |
| CN117388200A (en) * | 2023-12-12 | 2024-01-12 | 赛默飞世尔（上海）仪器有限公司 | Micro spectrophotometer for detecting sample and method for detecting sample |
| CN108226078B (en) * | 2018-02-11 | 2024-07-02 | 中国环境科学研究院 | Ultraviolet-visible spectrum in-situ monitoring device capable of adjusting optical path and water quality multi-parameter measuring method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108226078A (en) * | 2018-02-11 | 2018-06-29 | 中国环境科学研究院 | The adjustable ultraviolet-visible spectrum in-situ monitoring device of light path and multi-parameter water-quality measuring method |
| CN108226078B (en) * | 2018-02-11 | 2024-07-02 | 中国环境科学研究院 | Ultraviolet-visible spectrum in-situ monitoring device capable of adjusting optical path and water quality multi-parameter measuring method |
| CN112304878A (en) * | 2019-07-30 | 2021-02-02 | 杭州米欧仪器有限公司 | Spectrophotometer optical fiber head assembly, photometer and method for measuring solution concentration |
| CN111272683A (en) * | 2020-03-07 | 2020-06-12 | 广东海洋大学 | Liquid absorption coefficient measuring device and measuring method |
| CN113008838A (en) * | 2021-03-17 | 2021-06-22 | 华北电力大学 | Optical cavity, heating cavity, measuring device and liquid medium transmission spectrum measuring system |
| CN113008838B (en) * | 2021-03-17 | 2023-04-11 | 华北电力大学 | Optical cavity, heating cavity, measuring device and liquid medium transmission spectrum measuring system |
| CN117388200A (en) * | 2023-12-12 | 2024-01-12 | 赛默飞世尔（上海）仪器有限公司 | Micro spectrophotometer for detecting sample and method for detecting sample |
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