CN104833642B - A kind of adjustable liquid light transmission features measurement apparatus of light path - Google Patents
A kind of adjustable liquid light transmission features measurement apparatus of light path Download PDFInfo
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- CN104833642B CN104833642B CN201510259214.5A CN201510259214A CN104833642B CN 104833642 B CN104833642 B CN 104833642B CN 201510259214 A CN201510259214 A CN 201510259214A CN 104833642 B CN104833642 B CN 104833642B
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Abstract
A kind of adjustable liquid light transmission features measurement apparatus of light path, including base, light path adjusts platform, incident optical with collimation lens, the output optical fiber with collimation lens, light source and detector, one end of the incident optical is connected with light source, its other end is arranged on optical fiber upper mounting plate by the way that collimation lens is relative with the output optical fiber, one end of the output optical fiber is arranged on optical fiber lower platform by the way that collimation lens is relative with incident optical, its other end is connected with detector, the upper optical fiber light-emitting window with sealing protection glass is provided with the optical fiber upper mounting plate, the lower optical fiber light-emitting window with sealing protection glass is provided with the optical fiber lower platform, the solution protective cover of storage solution is provided between the upper optical fiber light-emitting window and lower optical fiber light-emitting window and forms relative closure between each other holds liquid platform.The present invention improves measurement range and precision, light path are adjustable, rational in infrastructure simple.
Description
Technical field
The present invention relates to optics of liquids Characteristics Detection field, more particularly to a kind of adjustable liquid light transmission features measurement of light path
Device.
Background technology
The method of characteristic research solution properties to be measured by testing transmitted light, either in physics, chemistry, biology
The field of scientific studies such as, medical science, materialogy, environmentology, or the modern productions such as chemical industry, medicine, environment measuring, metallurgy with
There is extensive and important application in administrative department.At present, most optics of liquids tester（Such as spectrophotometer）All
It is to take cuvette structure, light path of this structured testing light in solution to be measured is fixed, so as to limit this quasi-instrument
Measurement range and measuring accuracy.A kind of existing adjustable micro spectrophotometer of light path, surface tension of liquid shape is relied on by regulation
Into fluid column height, improve the measurement range of instrument.Main deficiency is existing for this structure：（1）Some liquid surfaces
Power deficiency, does not become fluid column；（2）Surface tension of liquid is limited, when liquid column length is more than 1mm, is easy to fracture；（3）Optical fiber
Outlet lacks collimation lens, and coupling efficiency is low between upper and lower optical fiber；（4）Lack the liquid highly volatile of protective cover, so as to influence to survey
Try effect.
The content of the invention
Measurement range is improved the invention provides one kind and precision, light path be adjustable, simple light path rational in infrastructure is adjustable
Liquid light transmission features measurement apparatus.
The technical solution adopted by the present invention is：
A kind of adjustable liquid light transmission features measurement apparatus of light path, including base, light path adjust platform, with collimation lens
Incident optical, the output optical fiber with collimation lens, light source and detector, it is characterised in that：One end of the incident optical and light
Source is connected, and its other end is arranged on optical fiber upper mounting plate by the way that collimation lens is relative with the output optical fiber, the output optical fiber
One end is arranged on optical fiber lower platform by the way that collimation lens is relative with incident optical, and its other end is connected with detector, described
The upper optical fiber light-emitting window with sealing protection glass is provided with optical fiber upper mounting plate, band sealing is provided with the optical fiber lower platform and is protected
The lower optical fiber light inlet of glass is protected, the solution that storage solution is provided between the upper optical fiber light-emitting window and lower optical fiber light inlet is protected
Shield and between each other one relative closure of formation hold liquid platform.What the solution to be measured of the present invention was stored in relative closure holds liquid platform
It is interior, very big liquid-column height can also be formed without surface tension, while reduce the unfavorable shadow to evaporate to test result
Ring, measurement range and precision can be improved.And optical fiber upper mounting plate can move up and down, so as to change test light warp
The light path of solution to be measured is crossed, realizes that light path is adjustable, improves measurement range and precision.No matter incident optical or the output optical fiber all bands
There is collimation lens, greatly promote coupling efficiency between optical fiber up and down, greatly increase the adjustable extent of light path, measurement can also be improved
Scope and precision.
Further, the incident optical is a y-type optical fiber, can pass through 200-2000nm light simultaneously, realize double light path
（With reference to solution and test solution）Synchronous detection, can also be changed to monochromatic light road or multi-pass.
Further, the output optical fiber is a y-type optical fiber, will transmit through 200-800 and 800-2000nm light respectively, is realized
Ultraviolet, visible and near infrared spectrum measures simultaneously.
Further, the solution protective cover is detachably arranged on lower optical fiber light-emitting window, solution protective cover upper end size
More than upper optical fiber light-emitting window lower end size.Solution protective cover is removably set, and is broken away from existing micro-spectrophotometer and is utilized table
Face tension force forms deficiency existing for fluid column, and testing liquid is stored in by the upper optical fiber light-emitting window with sealing protection glass, band sealing
Lower the optical fiber light inlet and solution protective cover of protective glass surround the holding in liquid platform of the opposing seal to be formed, without surface tension
Very big liquid-column height can be formed, while reduces the adverse effect to evaporate to test result, therefore can be carried significantly
High measurement scope and precision.
Further, the detector includes ultraviolet-visual spectrometer and infrared spectrometer, realizes multispectral while same pacing
Examination.
Beneficial effects of the present invention：Motor driven light path regulation platform can be utilized to move up and down, so as to change test
Light passes through the light path of testing liquid in protective cover, and testing liquid is stored in by incident optical head, the output optical fiber head and protective cover group
Into opposing seal space in, very big liquid-column height can also be formed without surface tension, while reduce and evaporate
To the adverse effect of test result, measurement range and precision can be improved.The use of collimation lens is greatly promoted between optical fiber up and down
Coupling efficiency, the adjustable extent of light path is greatly increased, measurement range and precision can also be improved.The use of y-type optical fiber can be with
Realize double light path（With reference to solution and test solution）With it is multispectral（It is ultraviolet, visible, infrared）Synchronism detection simultaneously, therefore can be again
Secondary raising measurement range and precision.
Brief description of the drawings
Fig. 1 is the theory structure block diagram of the present invention.
Fig. 2 is the structure setting figure of the present invention.
Fig. 3 is the structure left view of the present invention.
Fig. 4 is the enlarged diagram for holding liquid platform of the present invention.
Embodiment
The present invention is further described with reference to specific embodiment, but does not limit the invention to these tools
Body embodiment.One skilled in the art would recognize that present invention encompasses may include in Claims scope
All alternatives, improvement project and equivalents.
Reference picture 1-4, a kind of adjustable liquid light transmission features measurement apparatus of light path, including base 1, light path regulation platform,
Incident optical 4 with collimation lens 81, the output optical fiber 5 with collimation lens 85, light source 6 and detector 7, the light path regulation are flat
Platform includes moveable optical fiber upper mounting plate 2, and optical fiber lower platform 9 is provided with immediately below the optical fiber upper mounting plate 2, is put down under the optical fiber
Platform 9 is arranged on base 1, and one end of the incident optical 4 is connected with light source 6, and its other end passes through collimation lens 81 and outgoing
Optical fiber 5 is relative to be arranged on optical fiber upper mounting plate 2, and one end of the output optical fiber 5 passes through collimation lens 85 and the phase of incident optical 4
To be arranged on optical fiber lower platform 9, its other end is connected with detector 7, be provided with the optical fiber upper mounting plate 2 band sealing protect
The upper optical fiber light-emitting window 82 of glass is protected, the lower optical fiber light inlet 84 with sealing protection glass is provided with the optical fiber lower platform 9,
The solution protective cover 83 that storage solution is provided between the upper optical fiber light-emitting window 82 and lower optical fiber light inlet 84 is simultaneously mutual
One relative closure of formation holds liquid platform 8.The solution to be measured 86 of the present invention is stored in the holding in liquid platform 8 of relative closure, without table
Face tension force can also form very big liquid-column height, while reduce the adverse effect to evaporate to test result, Ke Yiti
High measurement scope and precision.And optical fiber upper mounting plate 2 can move up and down, so as to change test light by be measured molten
The light path of liquid, realize that light path is adjustable, improve measurement range and precision.No matter incident optical 4 or the output optical fiber 5 are all with collimation
Lens, greatly promote coupling efficiency between optical fiber up and down, greatly increase the adjustable extent of light path, can also improve measurement range and
Precision.
Upper fiber platform 2 drives its motor 3 moved up and down to be connected with one described in the present embodiment, and the motor 3 is arranged on
On regulating arm 10, the regulating arm 10 and the upper vertical connection of fiber platform 2.
Incident optical 4 described in the present embodiment is a y-type optical fiber, can pass through 200-2000nm light simultaneously, realize double light
Road（With reference to solution and test solution）Synchronous detection, can also be changed to monochromatic light road or multi-pass.The output optical fiber is a Y types
Optical fiber, 200-800 and 800-2000nm light are will transmit through respectively, realize ultraviolet, visible and near infrared spectrum while measure.
Solution protective cover 83 described in the present embodiment is detachably arranged on lower optical fiber light inlet 84, on solution protective cover 83
End size is more than the upper lower end size of optical fiber light-emitting window 82.Solution protective cover 83 is removably set, and breaks away from existing micro light splitting light
Degree meter forms deficiency existing for fluid column using surface tension, and solution 86 to be measured is stored in be gone out by the upper optical fiber with sealing protection glass
The opposing seal that optical port 82, lower optical fiber light inlet 84 and solution protective cover 83 encirclement with sealing protection glass are formed holds liquid platform
In 8, very big liquid-column height can also be formed without surface tension, while reduces the unfavorable shadow to evaporate to test result
Ring, therefore measurement range and precision can be greatly improved.
Detector 7 described in the present embodiment includes ultraviolet-visual spectrometer and infrared spectrometer, realizes multispectral while synchronous
Test.
During present invention work, motor 3 can be utilized to drive optical fiber upper mounting plate 2 to move up and down, so as to change test light warp
Cross the light path of solution 86 to be measured in solution protective case 83, when solution extinction characteristic is stronger, motor 3 drive optical fiber upper mounting plate 2 to
Lower movement, shorten test light path；When solution extinction characteristic is weaker, motor 3 drives optical fiber upper mounting plate 2 to move up, and increase is surveyed
Try light path.Meanwhile incident optical 4, the output optical fiber 5 are coupled by collimation lens, can be lifted light path regulation scope, therefore and
Traditional is compared based on cuvette photometer measurement mode with the pattern without collimation lens, and the present apparatus can improve measurement range
And precision.
The function of incident optical 4 and the output optical fiber 5 can be closed by converting with the connection of light source 6 and detector 7 in the present apparatus
System realizes the exchange of function, and the connection of solution protective cover 83 and the lower optical fiber light inlet 84 of sealing protection glass is dismountable tight
Close connection（Such as using screw thread or using elasticity material can be tightly being enclosed under optical fiber light inlet 84 surface）, both
It can prevent the solution in solution protective cover 83 from oozing out, and easily disassemble, so as to easily clean optical fiber up and down
Head, it can also be disposably the structure that can be reused after cleaning that solution protective cover 83, which can be,.Solution protective cover 83 with
Upper optical fiber light-emitting window 82 with sealing protection glass does not contact, and allows the inside diameter ratio of solution protective cover 83 with sealing protection
The external diameter of the upper optical fiber light-emitting window 82 of glass is slightly larger, and should ensure can be into the upper optical fiber light-emitting window 82 with sealing protection glass
Moved up and down in solution protective cover 83 freely, ensure upper optical fiber light-emitting window 82 and solution protective cover 83 with sealing protection glass again
Between gap it is small as far 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 the output optical fiber 5 can be two pairs or a pair or multipair, if two pairs or more
Multipair optical fiber head, then can arrange to compare for blank testing solution for a pair, and remaining is used for testing solution to be measured, improves and surveys
Amount efficiency.
Claims (5)
1. a kind of adjustable liquid light transmission features measurement apparatus of light path, including base, light path regulation platform, entering with collimation lens
Penetrate optical fiber, the output optical fiber with collimation lens, light source and detector, it is characterised in that：One end of the incident optical and light source
Connection, its other end are arranged on optical fiber upper mounting plate by the way that collimation lens is relative with the output optical fiber, and the one of the output optical fiber
End is arranged on optical fiber lower platform by the way that collimation lens is relative with incident optical, and its other end is connected with detector, the light
The upper optical fiber light-emitting window with sealing protection glass is provided with fine upper mounting plate, band sealing protection is provided with the optical fiber lower platform
The lower optical fiber light inlet of glass, the solution protection of storage solution is installed between the upper optical fiber light-emitting window and lower optical fiber light inlet
Cover and between each other one relative closure of formation hold liquid platform.
A kind of 2. adjustable liquid light transmission features measurement apparatus of light path as described in claim 1, it is characterised in that：It is described enter
It is a Y type optical fiber to penetrate optical fiber, can pass through 200-2000nm light simultaneously.
A kind of 3. adjustable liquid light transmission features measurement apparatus of light path as described in claim 1, it is characterised in that：It is described go out
It is a Y type optical fiber to penetrate optical fiber, will transmit through 200-800 and 800-2000nm light respectively, realizes ultraviolet, visible and near-infrared
Spectrum measures simultaneously.
A kind of 4. adjustable liquid light transmission features measurement apparatus of light path as described in claim 1, it is characterised in that：It is described molten
Liquid protective cover is detachably arranged on lower optical fiber light inlet, and solution protective cover upper end size is more than upper optical fiber light-emitting window lower end chi
It is very little.
A kind of 5. adjustable liquid light transmission features measurement apparatus of light path as described in one of claim 1 ~ 4, it is characterised in that：
The detector includes ultraviolet-visual spectrometer and infrared spectrometer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201510259214.5A CN104833642B (en) | 2015-05-20 | 2015-05-20 | A kind of adjustable liquid light transmission features measurement apparatus of light path |
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| CN201510259214.5A CN104833642B (en) | 2015-05-20 | 2015-05-20 | A kind of adjustable liquid light transmission features measurement apparatus of light path |
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| CN104833642A CN104833642A (en) | 2015-08-12 |
| CN104833642B true CN104833642B (en) | 2017-12-08 |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107677607B (en) * | 2017-04-17 | 2020-08-28 | 中国科学院宁波材料技术与工程研究所 | Optical distance adjustable liquid pool |
| 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 |
| CN111272683B (en) * | 2020-03-07 | 2022-11-25 | 广东海洋大学 | Liquid absorption coefficient measuring device and measuring method |
| 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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