CN204556500U - A kind of based on sharp light-struck device for measuring refractive index of transparent liquid - Google Patents
A kind of based on sharp light-struck device for measuring refractive index of transparent liquid Download PDFInfo
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- CN204556500U CN204556500U CN201520281507.9U CN201520281507U CN204556500U CN 204556500 U CN204556500 U CN 204556500U CN 201520281507 U CN201520281507 U CN 201520281507U CN 204556500 U CN204556500 U CN 204556500U
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- refractive index
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- glass plate
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Abstract
A kind of based on sharp light-struck device for measuring refractive index of transparent liquid, comprise LASER Light Source, the light pencil that LASER Light Source exports is after catoptron reflection, be irradiated in sample cell with a certain incident angle, the bottom level of sample cell is placed with glass plate, glass plate upper surface is coated with reflectance coating, the side vertical of sample cell is fixed with rule, the reflected light path of laser is provided with image capturing system, the output of image capturing system is connected with the input of image processing system, the output of image processing system is connected with computing machine, image capturing system can record the reflection ray pattern of testing liquid and glass plate, image processing system analysis also determines the distance between each reflection ray hot spot, the thickness of testing liquid thin layer on glass plate measured by rule, refraction law and geometric formula is utilized to calculate the refractive index of testing liquid, the utility model structure is simple, measuring accuracy is high, on-line measurement can be realized.
Description
Technical field
The utility model relates to detecting refractive index technical field, is specifically related to a kind of based on sharp light-struck device for measuring refractive index of transparent liquid.
Background technology
Refractive index is one of important optical parametric of material, and can understand optical property, purity, the character such as concentration and dispersion of material by refractive index, meanwhile, other some parameters (as thermo-optical coeffecient) are also closely related with refractive index.In the industrial sectors such as chemical industry, medicine, food, oil and college teaching and experiment, often need the refractive index measuring some liquid.Therefore, it is possible to the refractive index of Measurement accuracy liquid, be of great practical significance.
Existing detecting refractive index instrument, be the mensuration for transparent solid refractive index mostly, the instrument for transparency liquid detecting refractive index is less, and apparatus structure is complicated, operation easier large, is difficult to directly apply in physics teaching and experiment.
Summary of the invention
In order to overcome the shortcoming of above-mentioned prior art, the purpose of this utility model is to provide a kind of based on sharp light-struck device for measuring refractive index of transparent liquid, structure is simple, easy to operate, measuring accuracy is high, not liquid body refractive index size restriction, successful and can realize on-line measurement.
For achieving the above object, the utility model is by the following technical solutions:
A kind of based on sharp light-struck device for measuring refractive index of transparent liquid, comprise LASER Light Source 1, the light pencil that LASER Light Source 1 exports is after catoptron 2 reflects, be irradiated in sample cell 3 with a certain incident angle, the bottom level of sample cell 3 is placed with glass plate 4, glass plate 4 upper surface is coated with reflectance coating, the side vertical of sample cell 3 is fixed with rule 5, the reflected light path of laser is provided with image capturing system 6, the output of image capturing system 6 is connected with the input of image processing system 7, and the output of image processing system 7 is connected with computing machine.
Described sample cell 3 is made up of clear glass.
Described catoptron 2 can rotate, to adjust the incident angle of laser beam.
Described image capturing system 6 and image processing system 7 adopt damascene structures, charge coupled cell (CCD) detects reflection, the refracted ray at diverse location place, it exports after image pick-up card analog to digital conversion, and input computing machine carries out analysis and calculation.
Advantageous Effects of the present utility model is: structure is simple, easy to operate, measuring accuracy is high, not liquid body refractive index size restriction, can realize on-line measurement, and is easy to produce and apply.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Index path when Fig. 2 is actual measurement.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in detail.
As shown in Figure 1, a kind of based on sharp light-struck device for measuring refractive index of transparent liquid, comprise LASER Light Source 1, the light pencil that LASER Light Source 1 exports is after catoptron 2 reflects, be irradiated in sample cell 3 with a certain incident angle, the bottom level of sample cell 3 is placed with glass plate 4, glass plate 4 upper surface is coated with reflectance coating, the side vertical of sample cell 3 is fixed with rule 5, the reflected light path of laser is provided with image capturing system 6, the output of image capturing system 6 is connected with the input of image processing system 7, the output of image processing system 7 is connected with computing machine, image capturing system 6 can gather, the reflection ray pattern of record testing liquid and glass plate 4, image processing system 7 is analyzed and is determined the distance between each reflection ray hot spot, the thickness of testing liquid thin layer on glass plate 4 measured by rule 5, then refraction law and geometric formula is utilized to calculate the refractive index of testing liquid.
Described sample cell 3 is made up of clear glass.
Described catoptron 2 can rotate, to adjust the incident angle of laser beam.
Described image capturing system 6 and image processing system 7 adopt damascene structures, charge coupled cell (CCD) detects reflection, the refracted ray at diverse location place, it exports after image pick-up card analog to digital conversion, and input computing machine carries out analysis and calculation.
Principle of work of the present utility model is:
Open LASER Light Source 1, rotating mirror 2 adjusts the incident angle of laser beam, the reflection luminous energy of glass plate 4 is made to be irradiated to image capturing system 6, when not injecting testing liquid in sample cell 3 (sample cell 3 only has air), as shown in Figure 2, laser beam is irradiated to the D point on glass plate 4 with incident angle i, be irradiated to the N point on image capturing system 6 after glass plate 4 reflects.Then, lightly testing liquid is injected in sample cell 3, glass plate 4 forms a liquid lamella, now M on image capturing system 6
2and M
1point place will receive incident ray, M respectively
2the light at some place is that liquid level directly reflects, M
1the light at some place is then that incident light reflects and air refraction formation through liquid refracting, glass plate 4.Image processing system 7 is utilized to analyze and determine N, M
2and M
1the position of point and the distance between them, measure the thickness OO of testing liquid thin layer on glass plate 4 with rule 5
1.
According to geometric knowledge, incident angle i and refraction angle r can be obtained respectively:
wherein, O
1the height of liquid level and glass plate 4 upper surface is corresponded respectively to O.The computing formula that can obtain testing liquid refractive index according to refraction law is:
Measurement result is inputted computer program, automatically can draw the refractive index of testing liquid, thus realize on-line measurement.
Claims (4)
1. one kind based on sharp light-struck device for measuring refractive index of transparent liquid, comprise LASER Light Source (1), its characteristic is: the light pencil that LASER Light Source (1) exports is after catoptron (2) reflection, be irradiated in sample cell (3) with a certain incident angle, the bottom level of sample cell (3) is placed with glass plate (4), glass plate (4) upper surface is coated with reflectance coating, the side vertical of sample cell (3) is fixed with rule (5), the reflected light path of laser is provided with image capturing system (6), the output of image capturing system (6) is connected with the input of image processing system (7), the output of image processing system (7) is connected with computing machine.
2. one according to claim 1 is based on sharp light-struck device for measuring refractive index of transparent liquid, and its characteristic is: described sample cell (3) is made up of clear glass.
3. one according to claim 1 is based on sharp light-struck device for measuring refractive index of transparent liquid, and its characteristic is: described catoptron (2) can rotate, to adjust the incident angle of laser beam.
4. one according to claim 1 is based on sharp light-struck device for measuring refractive index of transparent liquid, its characteristic is: described image capturing system (6) and image processing system (7) adopt damascene structures, charge coupled cell (CCD) detects reflection, the refracted ray at diverse location place, it exports after image pick-up card analog to digital conversion, and input computing machine carries out analysis and calculation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520281507.9U CN204556500U (en) | 2015-05-04 | 2015-05-04 | A kind of based on sharp light-struck device for measuring refractive index of transparent liquid |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520281507.9U CN204556500U (en) | 2015-05-04 | 2015-05-04 | A kind of based on sharp light-struck device for measuring refractive index of transparent liquid |
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| Publication Number | Publication Date |
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| CN204556500U true CN204556500U (en) | 2015-08-12 |
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| CN201520281507.9U Expired - Fee Related CN204556500U (en) | 2015-05-04 | 2015-05-04 | A kind of based on sharp light-struck device for measuring refractive index of transparent liquid |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105158259A (en) * | 2015-08-14 | 2015-12-16 | 浙江江山三友电子有限公司 | Real-time detecting device for lamp filament powder coating quality |
| CN106370624A (en) * | 2016-09-20 | 2017-02-01 | 鞍山师范学院 | Experimental method and device for measuring liquid refractive index |
| CN108478044A (en) * | 2018-05-29 | 2018-09-04 | 莆田市烛火信息技术有限公司 | A kind of brine for kitchen use, syrup concentration regulate and control Intelligent water cup |
| CN110864998A (en) * | 2019-11-28 | 2020-03-06 | 文武 | Method for testing salt content of crude salt |
| CN110864999A (en) * | 2019-11-28 | 2020-03-06 | 文武 | Coarse salt quality detection system |
| CN110927102A (en) * | 2019-11-27 | 2020-03-27 | 四川大学 | Method for measuring liquid refractive index |
| CN114609087A (en) * | 2022-03-18 | 2022-06-10 | 浙江大学温州研究院 | Liquid refractive index measuring system and method based on Persel effect |
| CN115508310A (en) * | 2022-10-08 | 2022-12-23 | 中国科学院光电技术研究所 | Liquid refractive index in-situ measuring instrument and method |
-
2015
- 2015-05-04 CN CN201520281507.9U patent/CN204556500U/en not_active Expired - Fee Related
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105158259A (en) * | 2015-08-14 | 2015-12-16 | 浙江江山三友电子有限公司 | Real-time detecting device for lamp filament powder coating quality |
| CN106370624A (en) * | 2016-09-20 | 2017-02-01 | 鞍山师范学院 | Experimental method and device for measuring liquid refractive index |
| CN106370624B (en) * | 2016-09-20 | 2023-10-20 | 鞍山师范学院 | Experimental method and device for measuring refractive index of liquid |
| CN108478044A (en) * | 2018-05-29 | 2018-09-04 | 莆田市烛火信息技术有限公司 | A kind of brine for kitchen use, syrup concentration regulate and control Intelligent water cup |
| CN108478044B (en) * | 2018-05-29 | 2019-11-26 | 杨荣华 | A kind of salt water for kitchen use, syrup concentration regulate and control Intelligent water cup |
| CN110927102A (en) * | 2019-11-27 | 2020-03-27 | 四川大学 | Method for measuring liquid refractive index |
| CN110927102B (en) * | 2019-11-27 | 2021-09-03 | 四川大学 | Method for measuring liquid refractive index |
| CN110864998A (en) * | 2019-11-28 | 2020-03-06 | 文武 | Method for testing salt content of crude salt |
| CN110864999A (en) * | 2019-11-28 | 2020-03-06 | 文武 | Coarse salt quality detection system |
| CN114609087A (en) * | 2022-03-18 | 2022-06-10 | 浙江大学温州研究院 | Liquid refractive index measuring system and method based on Persel effect |
| CN114609087B (en) * | 2022-03-18 | 2023-04-07 | 浙江大学温州研究院 | Liquid refractive index measuring system and method based on Perssel effect |
| CN115508310A (en) * | 2022-10-08 | 2022-12-23 | 中国科学院光电技术研究所 | Liquid refractive index in-situ measuring instrument and method |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150812 Termination date: 20180504 |