CN203069512U - Material refractive index measuring instrument - Google Patents
Material refractive index measuring instrument Download PDFInfo
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- CN203069512U CN203069512U CN 201320040060 CN201320040060U CN203069512U CN 203069512 U CN203069512 U CN 203069512U CN 201320040060 CN201320040060 CN 201320040060 CN 201320040060 U CN201320040060 U CN 201320040060U CN 203069512 U CN203069512 U CN 203069512U
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- light
- photoelectric sensing
- objective table
- source box
- photoelectric
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Abstract
The utility model discloses a material refractive index measuring instrument. A mechanical part comprises a light source box, a photoelectric sensing box, an objective table, a base, a light source box rotating arm and a photoelectric sensing box rotating arm, wherein the objective table is a disc of which the periphery is provided with scales, one end of the light source box rotating arm and one end of the photoelectric sensing box rotating arm both are mounted on the base under the objective table, the other end of the light source box rotating arm is connected with the light source box, and the other end of the photoelectric sensing rotating arm is connected with the photoelectric sensing box; a reflected light tip pointer is arranged at the point of contact between the photoelectric sensing box and the objective table, the photoelectric sensing box is connected with a photoelectric conversion module of a circuit part; and the major principle of the circuit part is that light dependent resistors are used for building the photoelectric conversion module, a photoelectric analog signal is digitalized through AD (Analog-Digital) conversion, then, a singlechip is used for data processing, and finally, the light intensity voltage increasing with the light intensity is displayed on a four-bit LED (Light-Emitting Diode). The material refractive index measuring instrument accurately measures the critical angle of total reflection, so as to calculate the needed material refractive index based on n=1/sinC.
Description
Technical field
The utility model relates to a kind of material refractometry instrument, especially a kind of photoelectricity refractometer.
Background technology
Total reflection during more than or equal to cirtical angle of total reflection C, can take place by the relative optically thinner medium of relative optically denser medium directive and incident angle in light.When incident angle equals critical angle C, glass block makes its refraction angle equal 90 ° to the total reflection of light, see Fig. 1, can get according to refraction law this moment: n1/n2=sin90 °/sinC, wherein n1 is that incident medium refractive index, n2 are the refracting medium refractive indexes, be to inject optically thinner medium by optically denser medium material to be measured as exit facet AB among Fig. 1, as air, and the refractive index n 2=1 of air, this moment, refraction law can be reduced to n1/1=1/sinC, as long as measure the cirtical angle of total reflection of this material, just can calculate the refractive index of detected materials.
Summary of the invention
The purpose of this utility model is at the deficiencies in the prior art, and a kind of photoelectricity refractometer is provided, and has solved and how to have measured the technical matters of the cirtical angle of total reflection accurately, thereby utilized n=1/sinC to calculate the material requested refractive index.
In order to solve the technical matters of above-mentioned existence, the utility model adopts following technical proposals to be achieved: a kind of photoelectricity refractometer comprises mechanical part and circuit part:
Mechanical part: comprise light-source box (1), photoelectric sensing case (2), objective table (3), base (8), light-source box pivot arm (9), photoelectric sensing case pivot arm (10), objective table (3) is graduated disk, diameter line between 90 ° and 270 ° has chi at quarter (4), one end of light-source box pivot arm (9) and photoelectric sensing case pivot arm (10) all is installed on the axle center of the base (8) under the objective table (3), the other end of light-source box pivot arm (9) connects light-source box (1), the other end of photoelectric sensing case pivot arm (10) connects photoelectric sensing case (2), open a slit on the direction of light-source box (1) perpendicular to objective table (3) tangent line, the light that penetrates from slit is for going into to lose line, and light-source box (1) arranges incident ray point pointer (5) with the place, point of contact of objective table (3); Photoelectric sensing case (2) is accepted the opening port of reflection ray near the one side setting of objective table (3), photoelectric sensing case (2) arranges reflection ray point pointer (6) with the place, point of contact of objective table (3), and photoelectric sensing case (2) joins with the photoelectric conversion module of circuit part;
Circuit part comprises photoelectric conversion module, A/D converter, single-chip microcomputer and display system, the photoelectric conversion module that photoresistance is built connects A/D converter, simulated photoelectric is signal digitalized, A/D converter connects single-chip microcomputer, and the data after single-chip microcomputer is handled are imported display system display light forceful electric power again and pressed.
Described mechanical part is carved chi (4) for being mid point with the center of circle, the both sides chi at quarter that quarter, value equated.
Described mechanical part, light-source box (1) both sides arrange louvre (7).
Described circuit part, A/D are converted to 8 A/D converters of successive approximation simulated photoelectric is signal digitalized, have 8 A/D converters, No. 8 multi-way switchs and microprocessor and single-chip microcomputer direct interface, receive the light intensity voltage that collects.
Described circuit part, display system are the seven sections display decoders of 4 BCD-that link to each other with single-chip microcomputer, export 8 binary-coded decimals, finish decoding, are transferred to carry out the demonstration of light intensity voltage on the 7 hop count sign indicating number displays again.
Because adopt technique scheme, this photoelectricity refractometer that the utility model provides can be measured the cirtical angle of total reflection accurately, thereby can obtain the material requested refractive index.
Description of drawings
Fig. 1 is the total reflection principle figure of background technology;
Fig. 2 is physical construction vertical view of the present utility model;
Fig. 3 is the structure vertical view after the utility model takes down objective table;
Fig. 4 is structure side view of the present utility model;
Fig. 5 is the utility model circuit part system chart;
Fig. 6 is the utility model circuit part circuit diagram.
Among the figure: 1-light-source box, 2-photoelectric sensing case, 3-objective table, 4-carves chi, 5-incident ray point pointer, 6-reflection ray point pointer, 7-louvre, the 8-base, 9-light-source box pivot arm, 10-photoelectric sensing case pivot arm, the tight screw of 11-light-source box pivot arm system, the tight screw of 12-photoelectric sensing case pivot arm system, the tight screw of 13-objective table system.
Embodiment
Be further described below in conjunction with Fig. 2-6 couple of embodiment of the present utility model.
Composition of the present utility model is divided into two parts: mechanical part and circuit part; Measure the cirtical angle of total reflection, thereby utilize n=1/sinC to calculate the material requested refractive index.
Mechanical part: be used for placing detected materials, place light source and guarantee that light passes through the objective table center of circle, places the core parts optoelectronic sensor of testing circuit and receives reflection ray, detected materials requires to be processed as semicircle parallel material.
Fig. 2 is the utility model physical construction vertical view, places strong white light source in the light-source box (1), is opening a slit near objective table (3) one side and perpendicular to the direction of tangent line, and the light that penetrates from slit is as transmission ray; At the point of contact of itself and objective table (3), design incident ray point pointer (5) a little more than the place of objective table (3), be used to indicate the incident angle of incident light, in light-source box (1) both sides louvre (7) is set simultaneously.Place optoelectronic sensor in the photoelectric sensing case (2), the one side of close objective table (3) is set to opening port, in order to accept reflection ray; At the point of contact of itself and objective table (3), design reflection ray point pointer (6) a little more than the place of objective table, be used to indicate catoptrical reflection angle; Photoelectric sensing case (2) outer lead is used for joining with circuit part.The circumference of objective table (3) is divided into 24 scales for 360 °, plays the effect of scale, is mid point with the center of circle on the diameter line between 90 ° and 270 °, and both sides are worth into isometric chi at quarter quarter, in order to determine to be measured placement location.
Fig. 3 takes down vertical view behind the objective table for the utility model physical construction, one end of light-source box pivot arm (9) and photoelectric sensing case pivot arm (10) all is installed on the axle center of the base (8) under the objective table (3), and it is fixing by the tight screw of light-source box pivot arm system (11) and the tight screw of photoelectric sensing case pivot arm system (12), the other end of light-source box pivot arm (9) connects light-source box (1), the other end of photoelectric sensing case pivot arm (10) connects photoelectric sensing case (2), light-source box pivot arm (9) and photoelectric sensing case pivot arm (10) can 360 ° of rotations around the axle center, in order to adjust incident angle and to accept reflection ray.
Fig. 4 is the utility model physical construction side view, and the tight screw of objective table system (13) is fixing with objective table (3) and base (8).
The circuit part cardinal principle is to use photoresistance to build photoelectric conversion module, and is through the AD conversion that simulated photoelectric is signal digitalized, carries out data by single-chip microcomputer again and handles, and finally shows the light intensity voltage that increases with light intensity at 4 LED.System framework as shown in Figure 5.
Circuit diagram as shown in Figure 6, photoelectric conversion module adopts photoresistance to carry out opto-electronic conversion, when illumination was mapped in the photoresistance, the resistance of photoresistance changed, thereby produced electric signal, through amplifier electric signal was amplified again.Successive approximation type a/d converter has 8 A/D converters, No. 8 multi-way switchs and microprocessor, can with the single-chip microcomputer direct interface, receive the light intensity voltage collect.Display system is that seven sections display decoders of 4 BCD-link to each other with single-chip microcomputer, exports 8 binary-coded decimals, finishes decoding, is transferred to carry out the demonstration of light intensity voltage on the 7 hop count sign indicating number displays again.
Claims (5)
1. a material refractometry instrument is characterized in that, comprises mechanical part and circuit part:
Mechanical part comprises light-source box (1), photoelectric sensing case (2), objective table (3), base (8), light-source box pivot arm (9) and photoelectric sensing case pivot arm (10), described objective table (3) is graduated disk on the circumference, and the diameter line between 90 ° and 270 ° has chi at quarter (4); One end of light-source box pivot arm (9) and photoelectric sensing case pivot arm (10) all is installed on the axle center of the base (8) under the objective table (3), the other end of light-source box pivot arm (9) connects light-source box (1), and the other end of photoelectric sensing case pivot arm (10) connects photoelectric sensing case (2); Open a slit on the direction of light-source box (1) perpendicular to objective table (3) tangent line, the light that penetrates from slit is incident ray, and light-source box (1) arranges incident ray point pointer (5) with the place, point of contact of objective table (3); Photoelectric sensing case (2) is accepted the opening port of reflection ray near the one side setting of objective table (3), photoelectric sensing case (2) arranges reflection ray point pointer (6) with the place, point of contact of objective table (3), and photoelectric sensing case (2) joins with the photoelectric conversion module of circuit part;
Circuit part comprises photoelectric conversion module, A/D converter, single-chip microcomputer and display system, the photoelectric conversion module that photoresistance is built connects A/D converter, simulated photoelectric is signal digitalized, A/D converter connects single-chip microcomputer, and the data after single-chip microcomputer is handled are imported display system display light forceful electric power again and pressed.
2. a kind of material refractometry instrument according to claim 1 is characterized in that, described mechanical part, and carving chi (4) is mid point with the center of circle, both sides value at quarter equates.
3. a kind of material refractometry instrument according to claim 1 is characterized in that, described mechanical part, and light-source box (1) both sides arrange louvre (7).
4. a kind of material refractometry instrument according to claim 1, it is characterized in that, described circuit part, A/D converter is 8 A/D converters of successive approximation, have 8 A/D converters, No. 8 multi-way switchs and microprocessor, with the single-chip microcomputer direct interface, receive the light intensity voltage that collects.
5. a kind of material refractometry instrument according to claim 1, it is characterized in that, described circuit part, display system is 8 binary-coded decimals of seven sections display decoder output of 4 BCD-that link to each other with single-chip microcomputer, finish decoding, be transferred to again and carry out the demonstration of light intensity voltage on the 7 hop count sign indicating number displays.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320040060 CN203069512U (en) | 2013-01-21 | 2013-01-21 | Material refractive index measuring instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320040060 CN203069512U (en) | 2013-01-21 | 2013-01-21 | Material refractive index measuring instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203069512U true CN203069512U (en) | 2013-07-17 |
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ID=48768286
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320040060 Expired - Fee Related CN203069512U (en) | 2013-01-21 | 2013-01-21 | Material refractive index measuring instrument |
Country Status (1)
| Country | Link |
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| CN (1) | CN203069512U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106770036A (en) * | 2017-01-11 | 2017-05-31 | 裴钊 | Refractive index measuring instrument |
| CN106979935A (en) * | 2017-03-14 | 2017-07-25 | 浙江大学 | A kind of contactless glass block refractive index measuring instrument |
| CN110346303A (en) * | 2019-08-05 | 2019-10-18 | 东莞南玻太阳能玻璃有限公司 | A kind of glare proof glass glistening intensity measuring instrument |
-
2013
- 2013-01-21 CN CN 201320040060 patent/CN203069512U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106770036A (en) * | 2017-01-11 | 2017-05-31 | 裴钊 | Refractive index measuring instrument |
| CN106979935A (en) * | 2017-03-14 | 2017-07-25 | 浙江大学 | A kind of contactless glass block refractive index measuring instrument |
| CN106979935B (en) * | 2017-03-14 | 2019-07-09 | 浙江大学 | A kind of contactless glass block refractive index measuring instrument |
| CN110346303A (en) * | 2019-08-05 | 2019-10-18 | 东莞南玻太阳能玻璃有限公司 | A kind of glare proof glass glistening intensity measuring instrument |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130717 Termination date: 20140121 |