CN202886280U - Refractive index measuring device - Google Patents
Refractive index measuring device Download PDFInfo
- Publication number
- CN202886280U CN202886280U CN 201220541150 CN201220541150U CN202886280U CN 202886280 U CN202886280 U CN 202886280U CN 201220541150 CN201220541150 CN 201220541150 CN 201220541150 U CN201220541150 U CN 201220541150U CN 202886280 U CN202886280 U CN 202886280U
- Authority
- CN
- China
- Prior art keywords
- refractive index
- measuring device
- measurement
- cup dolly
- index measuring
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Landscapes
- Investigating Or Analysing Materials By Optical Means (AREA)
Abstract
The utility model discloses a refractive index measuring device which comprises an annular base, wherein an annular scale mark is engraved at the edge of the annular base. The refractive index measuring device is characterized in that a rectangular thin sheet is fixedly arranged on the annular base, wherein pointers are arranged at two ends of the rectangular thin sheet; and the rectangular thin sheet can randomly rotate around the circle center O of the base. By changing the measurement on an emergence angle into the measurement on length, the refractive index measuring device improves the measurement precision, and the measurement result is relatively precise.
Description
Affiliated technical field
The utility model relates to a kind of experiment device for teaching, is specially a kind of device of measuring printing opacity object refractive index.
Background technology
When school's physics lesson was acquired the refraction content of relevant light in the optics at present, the phenomenon of usually utilizing light that refraction occurs through different medium the time was surveyed the refractive index of object under test, is used for deepening classmates to the understanding of knowledge, improves learning efficiency.In measuring test, usually to use the light source of specialty, and utilize formula to calculate refractive index after needing the tracking light path to measure incident angle and emergence angle.The required equipment of this method is various, and tracking light path difficulty is large, and the incident angle emergence angle is measured by Freehandhand-drawing and protractor, and precision is low.The disclosed refractive index measuring instrument of Chinese patent ZL200620105920.0 although it has simplified measuring process to a certain extent, but still needs twice measurement of angle, and the minimum scale of its measurement dish is 1 ° only, has reduced the precision of experimental result.
Summary of the invention
For the deficiency on the above-mentioned prior art, the utility model provides a kind of apparatus for measuring refractive index.This apparatus for measuring refractive index changes into measurement of length by the measurement with emergence angle, has improved measuring accuracy, makes measurement result more accurate.
The technical scheme that the utility model adopts is: a kind of apparatus for measuring refractive index, comprise cup dolly, described cup dolly periphery is carved with the angle sign, it is characterized in that: be fixed with rotating shaft on the central point of described cup dolly, the two ends that width is d are fixed on the cup dolly by rotating shaft with the rectangle thin slice of pointer.
Described apparatus for measuring refractive index is characterized in that crossing the center of circle in the bottom of cup dolly is fixed with the horizontal location iron plate.
The beneficial effects of the utility model are: the measurement of angle that precision is lower is changed to the higher linear measure longimetry of precision, has improved the accuracy of measurement result.
Description of drawings
Fig. 1 is apparatus for measuring refractive index test mode synoptic diagram of the present utility model.
Among the figure, 1-cup dolly, 2-rectangle thin slice, 3-object under test, 4-rotating shaft, 5-orientation magnetic iron block.
Embodiment
Below in conjunction with accompanying drawing embodiment of the present utility model is described further.
Such as Fig. 1, a cup dolly 1 is arranged, described cup dolly is divided into four quadrants, and each quadrant all is shaped with 0-90 degree scale, and the line of the line of two 0 degree scales and two 90 degree scales is perpendicular.Wherein the line of two 0 degree scales is vertical curve, and the line of two 90 degree scales is horizontal line.Cross the center of circle in the bottom of center of circle base 1 and be fixed with the horizontal location iron plate.The central point of cup dolly 1 is fixed with rotating shaft 4, the width that two ends are fixed with pointer is that the rectangle thin slice 2 of d is fixed in the rotating shaft 4, the scale of described rectangle thin slice 2 two ends pointer indications is the angle of its rotation, and object under test 3 is a transparent rectangle object.During measurement, object under test 3 is placed rectangle thin slice 2 tops, and the center of object under test 3 is that rotating shaft 4 overlaps with the central point of base 1.At the both sides of object under test 3 placement positioning magnet piece 5, so that object under test 3 keeps fixing.Seeing through object under test 3 when rotating rectangle thin slice 2 can observe two long limits of rectangle thin slice 2 the visions dislocation occurs.When two long limits of rectangle thin slice 2 visually overlap, be that magnitude of misalignment is during just for the width d of rectangle thin slice, stop operating, the number of degrees of pointer indication are incident angle i on the rectangle thin slice 2 at this moment, measure plane of light incidence and the outgoing distance between the surface h of object under test 3.By the refractive index formula
, with the i that measures, h, d numerical value is brought the refractive index that can calculate object under test 3 into.
Apparatus for measuring refractive index base 1 of the present utility model adopts sheet metal such as the making such as aluminium alloy plate or resin plate or wood materials with the material of rectangle thin slice 2, but rectangle thin slice 2 must adopt non magnetic (weak magnetic) material.The tagger that a thickness is no more than 1 millimeter is fixed with bonding agent in bottom at base 1.The center of base 1 is crossed in the fixed position of tagger, and the horizontal line of two 90 degree scales to that indicated in the drawings parallels.
Claims (2)
1. apparatus for measuring refractive index, comprise cup dolly (1), described cup dolly (1) periphery is carved with the angle sign, it is characterized in that: be fixed with rotating shaft (4) on the central point of described cup dolly (1), the two ends that width is d are fixed on the cup dolly (1) by rotating shaft (4) with the rectangle thin slice (2) of pointer.
2. according to claim 1 apparatus for measuring refractive index is characterized in that crossing the center of circle in the bottom of cup dolly (1) is fixed with the horizontal location iron plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220541150 CN202886280U (en) | 2012-10-22 | 2012-10-22 | Refractive index measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220541150 CN202886280U (en) | 2012-10-22 | 2012-10-22 | Refractive index measuring device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202886280U true CN202886280U (en) | 2013-04-17 |
Family
ID=48077694
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220541150 Expired - Fee Related CN202886280U (en) | 2012-10-22 | 2012-10-22 | Refractive index measuring device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202886280U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103868886A (en) * | 2013-12-23 | 2014-06-18 | 危舒宏 | Refractive index determinator |
| CN104240572A (en) * | 2014-09-28 | 2014-12-24 | 江南大学 | Refractometer for measuring refractive index of transparent liquid |
-
2012
- 2012-10-22 CN CN 201220541150 patent/CN202886280U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103868886A (en) * | 2013-12-23 | 2014-06-18 | 危舒宏 | Refractive index determinator |
| CN104240572A (en) * | 2014-09-28 | 2014-12-24 | 江南大学 | Refractometer for measuring refractive index of transparent liquid |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201322616Y (en) | Measuring instrument | |
| CN202886280U (en) | Refractive index measuring device | |
| CN202938797U (en) | Spectrometer angle-disc reading apparatus | |
| CN103400527A (en) | Direct-reading liquid refracting index measuring instrument and method for measuring liquid refracting index by using direct-reading liquid refracting index measuring instrument | |
| CN102506669A (en) | Cutting tool angle measuring instrument | |
| CN202994823U (en) | A simple wind direction gauge | |
| CN204924250U (en) | Seek quick marking auxiliary device of northern appearance | |
| CN203375911U (en) | Quick testing device for fabric thickness | |
| CN206756278U (en) | Balance and lab scale | |
| CN204037169U (en) | A kind of novel angle gauge | |
| CN203406002U (en) | Direct-reading type measuring instrument for liquid refractive index | |
| CN203487153U (en) | Microorganism colony size measuring board and device | |
| CN201237850Y (en) | Optical grating Moire fringe tester | |
| CN209181761U (en) | A kind of Calibration of angular displacement sensor auxiliary locator used for oil extractor | |
| CN103175988A (en) | Simple wind direction gauge | |
| CN202836480U (en) | Diaphragm inclination angle measuring apparatus for clutch diaphragm spring | |
| CN204404971U (en) | A kind of arc measuring instrument | |
| CN202329634U (en) | Measuring nail | |
| CN205352232U (en) | Dual -purpose electron protractor | |
| JP2013156239A (en) | Contact angle value conversion scale plate for monocular magnifying glass | |
| CN205080815U (en) | Liquid refraction imaging experiment appearance | |
| CN109724561A (en) | A kind of river width measuring appliance | |
| CN202074903U (en) | Combined protractor | |
| CN203011795U (en) | Fast cement fluidity test board | |
| CN207909373U (en) | A kind of flat Trigonometrid function board |
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: 20130417 Termination date: 20131022 |