CN109187432B - Liquid refractive index measuring device and measuring method - Google Patents
Liquid refractive index measuring device and measuring method Download PDFInfo
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- CN109187432B CN109187432B CN201811236956.6A CN201811236956A CN109187432B CN 109187432 B CN109187432 B CN 109187432B CN 201811236956 A CN201811236956 A CN 201811236956A CN 109187432 B CN109187432 B CN 109187432B
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- light beam
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- refractive index
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/41—Refractivity; Phase-affecting properties, e.g. optical path length
- G01N21/43—Refractivity; Phase-affecting properties, e.g. optical path length by measuring critical angle
Abstract
The application relates to a liquid refractive index measuring device and a measuring method, comprising the following steps: a light source for generating a light beam, an optical resin prism for refracting an incident light beam, and an image sensor for receiving an image of an outgoing light beam; the optical resin prism comprises an incident surface capable of enabling an incident light beam to enter, a first reflecting surface, a first surface, a second surface and a second reflecting surface which are contacted with liquid to be measured, and an emitting surface capable of enabling the light beam to be focused and emitted to form an emitting light beam; the first reflecting surface and the second reflecting surface can reflect light beams; the first surface and the second surface which are contacted with the liquid to be measured can project light beams, and when the liquid to be measured contains bubbles, the liquid among the bubbles can be used for measurement. Therefore, the influence of bubbles in the liquid to be measured on the refractive index measurement of the liquid is reduced. At the same time, miniaturization of the device is promoted.
Description
Technical Field
The application relates to the technical field of measurement, in particular to a liquid refractive index measurement device and a measurement method.
Background
In the prior art, the refractive index is one of important optical parameters of a liquid, and by means of the refractive index, the optical performance, purity, concentration, dispersion and other properties of the liquid can be known, and other parameters (such as temperature) are closely related to the refractive index. Therefore, the measurement of the refractive index of a liquid is of great importance in the fields of chemical industry, medicine, food, petroleum and the like.
The total reflection critical angle imaging method is a commonly used method for measuring the refractive index of liquid, and calculates the refractive index of the liquid to be measured by measuring the emergence angle of light rays at a critical angle according to the total reflection principle. As shown in fig. 1, a typical total reflection critical angle measurement system includes a light source U1, a prism U3, and an image sensor U2, and in operation, a light beam emitted from the light source U1 passes through the prism U3 to reach an interface between a measured liquid X and the prism U3, where the light beam is separated into refracted light and reflected light, where the reflected light is received by the image sensor U2, and a bright-dark image is generated as shown on the right side in fig. 1. In the bright-dark image, the bright portion corresponds to the light totally reflected at the interface between the solution to be measured X and the prism U3, the dark portion corresponds to the light not totally reflected, and the bright-dark cut-off corresponds to the critical angle at which total reflection occurs. Since the change in the refractive index of the measured liquid causes a change in the critical angle for total reflection, the critical angle for total reflection can be obtained by measuring the position of the cut-off, and the refractive index of the measured liquid can be obtained.
However, when the liquid to be measured contains bubbles, the single total reflection measurement method cannot avoid the interference of the bubbles on the measurement, so that accurate measurement is realized.
Disclosure of Invention
The application aims to provide a liquid refractive index measuring device and a liquid refractive index measuring method, which are used for solving the problem of inaccurate liquid refractive index measurement in the prior art.
According to an aspect of the present application, there is provided a liquid refractive index measurement apparatus comprising:
the device comprises a light source for generating a light beam, an optical resin prism for refracting an incident light beam, a linear array image sensor for receiving an emergent light beam image, and a refractive index calculation module for calculating the refractive index of liquid to be measured;
the optical resin prism comprises an incident surface capable of enabling an incident light beam to enter, a first reflecting surface, a first surface, a second surface and a second reflecting surface which are contacted with liquid to be measured, and an emitting surface capable of enabling the light beam to be focused and emitted to form an emitting light beam; the first reflecting surface and the second reflecting surface can reflect light beams; the first surface and the second surface which are contacted with the liquid to be measured can project light beams;
the incident light beam emitted by the light source enters the incident surface of the optical resin prism;
the incident light beam propagates in the optical resin prism and is reflected on the first reflecting surface to form a first reflected light beam, and propagates in the optical resin prism to reach a first surface contacted with the liquid to be measured, so that transmission occurs;
the transmitted light beam passes through the liquid to be measured, is refracted, reaches the second surface contacted with the liquid to be measured, is refracted again, enters the optical resin prism, reaches the second reflecting surface, and is reflected to form a second reflected light beam;
the second reflected light beam propagates in the optical resin prism and reaches the emitting surface;
the exit face focuses the second reflected beam to form an exit beam.
A collimating lens is arranged between the light source and the optical resin prism;
and the light beam emitted by the light source passes through the collimating lens to form a parallel light beam, and the parallel light beam enters the incident surface of the optical resin prism.
The collimating lens consists of an aspherical mirror and 2 optical surfaces of a Bawil prism.
The first surface and the second surface are symmetrical with respect to the center of the optical resin prism.
The first reflecting surface and the second reflecting surface are symmetrical with respect to the center of the optical resin prism.
The first reflecting surface and the second reflecting surface are optical coating films.
The refractive index of the optical resin prism is 1.50-1.75;
the incident surface is a cylindrical mirror/toric lens;
the exit surface is an aspherical mirror/toric lens.
According to another aspect of the present application, there is provided a liquid refractive index measuring method, employing the liquid refractive index measuring device as described above, comprising:
the optical resin prism comprises an incident surface capable of enabling an incident light beam to enter, a first reflecting surface, a first surface, a second surface and a second reflecting surface which are contacted with liquid to be measured, and an emitting surface capable of enabling the light beam to be focused and emitted to form an emitting light beam; the first reflecting surface and the second reflecting surface can reflect light beams; the first surface and the second surface which are contacted with the liquid to be measured can project light beams;
the incident light beam emitted by the light source enters the incident surface of the optical resin prism;
the incident light beam propagates in the optical resin prism and is reflected on the first reflecting surface to form a first reflected light beam, and propagates in the optical resin prism to reach a first surface contacted with the liquid to be measured, so that transmission occurs;
the transmitted light beam passes through the liquid to be measured, is refracted, reaches the second surface contacted with the liquid to be measured, is refracted again, enters the optical resin prism, reaches the second reflecting surface, and is reflected to form a second reflected light beam;
the second reflected light beam propagates in the optical resin prism and reaches the emitting surface;
the emergent face focuses the second reflected light beam to form an emergent light beam;
the image sensor collects an image of the outgoing beam;
and the refractive index calculation module calculates the refractive index of the liquid to be measured according to the acquired corresponding relation between the emergent beam image and the refractive index.
A collimating lens is arranged between the light source and the optical resin prism;
and the light beam emitted by the light source passes through the collimating lens to form a parallel light beam, and the parallel light beam enters the incident surface of the optical resin prism.
The first surface and the second surface are symmetrical relative to the center of the optical resin prism;
the first reflecting surface and the second reflecting surface are symmetrical relative to the center of the optical resin prism;
the first reflecting surface and the second reflecting surface are optically coated;
the incident surface is a cylindrical mirror/toric lens;
the exit surface is an aspherical mirror/toric lens.
The beneficial effects of adopting above-mentioned scheme are:
according to the device and the method for measuring the liquid refractive index, provided by the embodiment of the application, the transmission type measurement mode is realized, and under the condition that bubbles are dense, the solution to be measured among the bubbles is used for measurement, so that the influence of the bubbles on measurement is avoided. At the same time, miniaturization of the device is achieved.
Drawings
FIG. 1 is a schematic diagram of a prior art liquid refractive index measurement device;
FIG. 2 is a schematic diagram of the optical principle of the device for measuring refractive index of liquid according to embodiment 1 of the present application;
FIG. 3 is a schematic diagram of the optical principle of the device for measuring refractive index of liquid according to embodiment 2 of the present application;
FIG. 4 is a schematic diagram of the optical principle of the device for measuring refractive index of liquid according to embodiment 3 of the present application;
FIG. 5 is a schematic view of an optical path of a liquid refractive index measurement device according to embodiment 3 of the present application;
FIG. 6 is a schematic diagram illustrating the principle of bubble disturbance resolution of the device for measuring refractive index of liquid according to embodiment 3 of the present application;
fig. 7 to 10 are schematic diagrams of ray tracing simulation provided in embodiment 3 of the present application.
Detailed Description
The principles and features of the present application are described below with reference to the drawings, the examples are illustrated for the purpose of illustrating the application and are not to be construed as limiting the scope of the application. It should be noted that, without conflict, the embodiments of the present application and features in the embodiments may be combined with each other.
Example 1
As shown in fig. 2, embodiment 1 of the present application provides a liquid refractive index measurement apparatus, comprising:
a light source U1, preferably a laser light source, for limiting the angle of incidence of the incident light beam;
the optical resin prism U3 comprises an incidence surface S1, a first reflection surface S2, a first surface S3 contacted with liquid to be measured, a second surface S4, a second reflection surface S5 and an emission surface S6, wherein light beams emitted by the light source are combed by the collimating lens to form parallel light beams, the parallel light beams enter the incidence surface S1 of the optical resin prism, the incident light beams propagate in the optical resin prism and are reflected on the first reflection surface S2 to form first reflection light beams, and the first reflection light beams propagate in the optical resin prism to reach the first surface S3 contacted with the liquid to be measured so as to be transmitted. The transmitted light beam passes through the liquid to be measured and is refracted; the light reaching the second surface S4 in contact with the liquid to be measured is refracted again, enters the optical resin prism, reaches the second reflecting surface S5, and is reflected to form a second reflected light beam. The second reflected light beam propagates in the optical resin prism to reach the emission surface S6, and the emission surface focuses on the second reflected light beam to form an emission light beam.
An image sensor U4, preferably a line image sensor, for capturing an image of the outgoing light beam emitted through the emission surface S6;
refractive index calculating means (not shown) for calculating the refractive index of the liquid to be measured from the correspondence between the outgoing beam image and the refractive index.
According to the liquid refractive index measuring device, a transmission type measuring mode is realized, and under the condition that bubbles are dense, a solution to be measured among the bubbles is used for measurement, so that the influence of the bubbles on measurement is avoided. At the same time, miniaturization of the device is achieved.
Preferably, the light source is a laser light source.
Preferably, the first surface S3 and the second surface S4 are symmetrical with respect to the center of the optical resin prism.
Preferably, the first reflecting surface S2 and the second reflecting surface S5 are symmetrical with respect to the center of the optical resin prism.
Preferably, the first reflecting surface S2 and the second reflecting surface S5 are coated with a reflecting film, and the reflecting film is preferably a high-reflection dielectric film or a high-reflection aluminum film to enhance the reflecting effect.
Example 2
As shown in fig. 3, embodiment 2 of the present application provides a liquid refractive index measurement apparatus, which further includes, on the basis of embodiment 1:
and a collimator lens U2 disposed between the light source U1 and the optical resin prism U3, for converging the light beam emitted from the light source U1 to be incident into the optical resin prism U3. And the principal axis of the collimating lens coincides with the center of the light source.
Further, the collimating lens U2 is composed of 2 optical surfaces, and one optical surface is an aspherical mirror; the other optical surface is a powell lens.
Example 3
As shown in fig. 4, embodiment 3 of the present application provides a liquid refractive index measuring device, which further includes an incident surface S1 and an emitting surface S6 on the basis of embodiment 2. The incident surface S1 is used for converting incident light into a linear parallel light beam; the outgoing surface S6 is configured to focus the second reflected light beam, so that when the second reflected light beam reaches the receiving plane of the line image sensor, an approximately point-like light spot is formed.
Further, the incident surface S1 is a cylindrical mirror/toric lens.
Further, the emission surface S6 is an aspherical mirror/toric lens.
Preferably, the incident surface S1 and the exit surface S6 are integrally formed with the optical resin prism, and more preferably, an optical transparent resin material is used; the integrated molding is adopted, so that the assembly consistency of the optical component is ensured.
As shown in fig. 5, after the light beam emitted by the laser light source U1 is combed by the collimating lens U2, a linear light beam DD with a beam spreading angle is formed, and after the light beam reaches the S1 incident surface S1 of the optical resin prism U3, a linear parallel light beam DE is formed, and the length of the light beam is 5-8mm and the width of the light beam is 1-2mm. The light beam DE propagates in the optical resin prism and reaches the first reflecting surface S2 to be reflected; reaching the first surface S3 in contact with the solution to be measured, and exiting the optical resin prism U3 into the liquid to be measured. Since the refractive index of the liquid to be measured is different from that of the optical resin prism U3, the light beam DE is refracted. According to the refraction law n1sinθ1=n2sinθ2, when the refractive index of the liquid to be measured is low, the light beam DE forms a light beam L by refraction; when the refractive index of the liquid to be measured is an intermediate value, the light beam DE forms a light beam M through refraction; when the refractive index of the liquid to be measured is high, the light beam DE forms a light beam H through refraction; the refracted light beam is still a linear parallel light beam, and enters the optical resin prism U3 again through the second surface S4 of the optical resin prism U3. The light beam L/M/H reaches the exit surface S5 of the optical resin prism U3 after being reflected by the second reflecting surface. After being focused by the emergent surface S5, the light beams L/M/H respectively form focused light beams L '/M '/H ', reach the receiving surface of the linear array image sensor U4, and form approximately point-shaped light spots at different positions of the surface.
Referring to fig. 7-9, in accordance with embodiment 3 of the present application, the present apparatus simulated by ray tracing software is used to focus the light beam L '/M '/H ' on the image of the linear array image sensor when measuring liquids of different refractive indexes.
Fig. 7 is a received image of a linear array image sensor U4 measuring refractive index of 1.3330 (deionized water).
Fig. 8 is a received image of a line image sensor U4 measuring a liquid with a refractive index of 1.4250.
Fig. 9 is a received image of a line image sensor U4 measuring a liquid having a refractive index of 1.5400.
As shown in FIG. 6, if there is a bubble in the liquid to be measured, the bubble may interfere with the light beam L/M/H incident on the liquid to be measured, and some of the light beam is deflected. But the liquid between the bubbles is not affected to participate in measurement, and part of the light beam propagates along the original path and reaches the linear array image sensor. An approximately spot-like light spot is formed, the position of which is not changed, but the brightness of the spot-like light spot is reduced, as shown in fig. 10. At this time, the brightness of the laser light source U1 can be automatically adjusted by software to achieve the effect of measurement.
Example 4
According to the above embodiments, embodiment 4 provides a method for measuring refractive index of a liquid, the liquid refractive index measuring device provided by the above embodiments, including:
the optical resin prism comprises an incident surface capable of enabling an incident light beam to enter, a first reflecting surface, a first surface, a second surface and a second reflecting surface which are contacted with liquid to be measured, and an emitting surface capable of enabling the light beam to be focused and emitted to form an emitting light beam; the first reflecting surface and the second reflecting surface can reflect light beams; the first surface and the second surface which are contacted with the liquid to be measured can project light beams;
the incident light beam emitted by the light source enters the incident surface of the optical resin prism;
the incident light beam propagates in the optical resin prism and is reflected on the first reflecting surface to form a first reflected light beam, and propagates in the optical resin prism to reach a first surface contacted with the liquid to be measured, so that transmission occurs;
the transmitted light beam passes through the liquid to be measured, is refracted, reaches the second surface contacted with the liquid to be measured, is refracted again, enters the optical resin prism, reaches the second reflecting surface, and is reflected to form a second reflected light beam;
the second reflected light beam propagates in the optical resin prism and reaches the emitting surface;
the emergent face focuses the second reflected light beam to form an emergent light beam;
the linear array image sensor acquires an image of the emergent beam;
and the refractive index calculation module calculates the refractive index of the liquid to be measured according to the acquired corresponding relation between the emergent beam image and the refractive index.
A collimating lens is arranged between the light source and the optical resin prism;
and the light beam emitted by the light source passes through the collimating lens to form a parallel light beam, and the parallel light beam enters the incident surface of the optical resin prism.
The first surface and the second surface are symmetrical relative to the center of the optical resin prism;
the first reflecting surface and the second reflecting surface are symmetrical relative to the center of the optical resin prism;
the first reflecting surface and the second reflecting surface are optically coated;
the incident surface is a cylindrical mirror/toric lens;
the exit surface is an aspherical mirror/toric lens.
In summary, in each embodiment of the present application, by implementing a transmission measurement mode, under the condition of dense bubbles, a solution to be measured between the bubbles is used to participate in measurement, so as to avoid the influence of the bubbles on measurement. At the same time, miniaturization of the device is achieved.
It will be appreciated by those skilled in the art that embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, magnetic disk storage, optical storage, and the like) having computer-usable program code embodied therein.
The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems) and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flowchart illustrations and/or block diagrams, and combinations of flows and/or blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
It will be apparent to those skilled in the art that various modifications and variations can be made to the present application without departing from the spirit or scope of the application. Thus, it is intended that the present application also include such modifications and alterations insofar as they come within the scope of the appended claims or the equivalents thereof.
Claims (7)
1. A liquid refractive index measuring device, comprising:
a light source for generating a light beam, an optical resin prism for refracting an incident light beam, and an image sensor for receiving an image of an outgoing light beam;
the optical resin prism comprises an incident surface capable of enabling an incident light beam to enter, a first reflecting surface, a first surface, a second surface and a second reflecting surface which are contacted with liquid to be measured, and an emitting surface capable of enabling the light beam to be focused and emitted to form an emitting light beam; the first reflecting surface and the second reflecting surface can reflect light beams; the first surface and the second surface which are contacted with the liquid to be measured can project light beams;
the incident light beam emitted by the light source enters the incident surface of the optical resin prism;
the incident light beam propagates in the optical resin prism and is reflected on the first reflecting surface to form a first reflected light beam, and propagates in the optical resin prism to reach a first surface contacted with the liquid to be measured, so that transmission occurs;
the transmitted light beam passes through the liquid to be measured, is refracted, reaches the second surface contacted with the liquid to be measured, is refracted again, enters the optical resin prism, reaches the second reflecting surface, and is reflected to form a second reflected light beam;
the second reflected light beam propagates in the optical resin prism and reaches the emitting surface;
the emitting surface focuses the second reflected light beam to form an emitting light beam which reaches the receiving surface of the linear array image sensor;
a collimating lens is arranged between the light source and the optical resin prism;
the light beams emitted by the light source form parallel light beams after passing through the collimating lens, and enter the incident surface of the optical resin prism;
the first surface and the second surface are symmetrical relative to the center of the optical resin prism;
the first reflecting surface and the second reflecting surface are symmetrical with respect to the center of the optical resin prism.
2. The liquid refractive index measuring device according to claim 1, wherein the collimator lens is composed of an aspherical mirror and 2 optical surfaces of a powell lens.
3. The device of claim 1, wherein the first reflective surface and the second reflective surface are optically coated.
4. The liquid refractive index measurement apparatus according to claim 1, wherein the refractive index of the optical resin prism is between 1.50 and 1.75;
the incident surface is a cylindrical mirror/toric lens;
the exit surface is an aspherical mirror/toric lens.
5. A liquid refractive index measuring method using the liquid refractive index measuring device according to any one of claims 1 to 4, comprising:
the optical resin prism comprises an incident surface capable of enabling an incident light beam to enter, a first reflecting surface, a first surface, a second surface and a second reflecting surface which are contacted with liquid to be measured, and an emitting surface capable of enabling the light beam to be focused and emitted to form an emitting light beam; the first reflecting surface and the second reflecting surface can reflect light beams; the first surface and the second surface which are contacted with the liquid to be measured can project light beams;
the incident light beam emitted by the light source enters the incident surface of the optical resin prism;
the incident light beam propagates in the optical resin prism and is reflected on the first reflecting surface to form a first reflected light beam, and propagates in the optical resin prism to reach a first surface contacted with the liquid to be measured, so that transmission occurs;
the transmitted light beam passes through the liquid to be measured, is refracted, reaches the second surface contacted with the liquid to be measured, is refracted again, enters the optical resin prism, reaches the second reflecting surface, and is reflected to form a second reflected light beam;
the second reflected light beam propagates in the optical resin prism and reaches the emitting surface;
the emitting surface focuses the second reflected light beam to form an emitting light beam;
the image sensor collects an image of the outgoing beam;
and the refractive index calculation module calculates the refractive index of the liquid to be measured according to the acquired corresponding relation between the emergent beam image and the refractive index.
6. The method for measuring the refractive index of a liquid according to claim 5, comprising:
a collimating lens is arranged between the light source and the optical resin prism;
and the light beam emitted by the light source passes through the collimating lens to form a parallel light beam, and the parallel light beam enters the incident surface of the optical resin prism.
7. The method for measuring the refractive index of a liquid according to claim 6, comprising:
the first surface and the second surface are symmetrical relative to the center of the optical resin prism;
the first reflecting surface and the second reflecting surface are symmetrical relative to the center of the optical resin prism;
the first reflecting surface and the second reflecting surface are optically coated;
the incident surface is a cylindrical mirror/toric lens;
the exit surface is an aspherical mirror/toric lens.
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| CN110398476B (en) * | 2019-07-25 | 2024-02-23 | 四川维思达光学技术有限公司 | Pen-type layout optical system for measuring refractive index of liquid and measuring method thereof |
| CN110320179B (en) * | 2019-07-25 | 2024-03-19 | 四川维思达光学技术有限公司 | Working face condensation liquid refractive index test probe and light refraction method thereof |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000088749A (en) * | 1998-09-14 | 2000-03-31 | Kurabo Ind Ltd | Probe for optical measurement |
| CN2708303Y (en) * | 2004-06-24 | 2005-07-06 | 浙江大学 | Multichannel liquid refraction index meter |
| CN105954232A (en) * | 2016-05-26 | 2016-09-21 | 北京领航力嘉机电有限公司 | Liquid refractive index measuring system |
| JP2016173278A (en) * | 2015-03-17 | 2016-09-29 | 株式会社島津製作所 | Refractive index measured data processing device |
| CN106841111A (en) * | 2017-04-13 | 2017-06-13 | 云南电网有限责任公司电力科学研究院 | A kind of V prisms measure the method and device of soil refractive index |
| CN209400418U (en) * | 2018-10-23 | 2019-09-17 | 北京博芮思商贸有限公司 | A kind of measuring device for liquid refractive index |
-
2018
- 2018-10-23 CN CN201811236956.6A patent/CN109187432B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000088749A (en) * | 1998-09-14 | 2000-03-31 | Kurabo Ind Ltd | Probe for optical measurement |
| CN2708303Y (en) * | 2004-06-24 | 2005-07-06 | 浙江大学 | Multichannel liquid refraction index meter |
| JP2016173278A (en) * | 2015-03-17 | 2016-09-29 | 株式会社島津製作所 | Refractive index measured data processing device |
| CN105954232A (en) * | 2016-05-26 | 2016-09-21 | 北京领航力嘉机电有限公司 | Liquid refractive index measuring system |
| CN106841111A (en) * | 2017-04-13 | 2017-06-13 | 云南电网有限责任公司电力科学研究院 | A kind of V prisms measure the method and device of soil refractive index |
| CN209400418U (en) * | 2018-10-23 | 2019-09-17 | 北京博芮思商贸有限公司 | A kind of measuring device for liquid refractive index |
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