Experimental apparatus for measuring refractive indexes of liquid and measuring method thereof

A technology of liquid refractive index and experimental instrument, applied in the field of optical means, can solve the problems of high cost of instrument construction, difficult to improve accuracy, complicated angle measurement, etc., and achieve the effects of convenient operation, reduced construction cost, and high measurement accuracy

Inactive Publication Date: 2010-08-11
SHAANXI NORMAL UNIV
View PDF3 Cites 5 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In the use of the Abbe refractometer, the direct measurement of the Abbe refractometer is the critical angle, and the measurement of the critical angle must have a process, that is, by adjusting the refraction angle, find out the angle corresponding to the critical light in the field of view, so this instrument is not real-time Measuring instruments; in addition, in the Abbe refractometer, the optical device is two optical prisms, the structure is complex, and the cost of the instrument is high; secondly, the direct measurement quantity in the Abbe refractometer is the angle, relative to the linear distance measurement, the angle measurement is complicated and the accuracy is also low. Difficult to improve

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Experimental apparatus for measuring refractive indexes of liquid and measuring method thereof
  • Experimental apparatus for measuring refractive indexes of liquid and measuring method thereof
  • Experimental apparatus for measuring refractive indexes of liquid and measuring method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] exist figure 1 Among them, the liquid refractive index measurement experimental instrument of this embodiment consists of a cassette 1, a hand wheel 2, a micrometer positioner 3, a lens barrel 4, a sealing plate 5, a pleated shading paper 6, a column 7, a fixed plate 8, and a flat image The display glass 9, the flat transmissive glass 10, the diaphragm 11, the semiconductor laser 12, the base 13, the light-shielding cover 14, and the rotation-to-translation conversion mechanism 16 of the screw and nut are connected to form a structure.

[0030] On the base 13, the cassette 1 is connected with the base 13 as a whole. The cassette 1 of the present embodiment is a stainless steel or opaque engineering plastics cassette 1, and the lower end in the cassette 1 is fixedly connected with a semiconductor laser by a threaded fastening connector. 12. A semiconductor laser 12 is an embodiment of a light emitting device, and the semiconductor laser 12 provides a light source for the...

Embodiment 2

[0040] In this embodiment, the thickness h of the flat plate image display glass 9 is 6.5 mm, the size of the flat plate image display glass 9 is the same as that of the flat transparent glass 10, the thickness h of the flat transparent glass 10 is 17 mm, and the flat image display glass 9 and The flat transmissive glass 10 is H-K9 flat optical glass with a refractive index n of 1.5146. The incident surface of the flat plate image display glass 9 is an optical surface and the outgoing surface is a textured surface. The coupling relationship of other components and components is the same as that of Embodiment 1.

[0041] Use the liquid refractive index measurement experiment instrument of this embodiment to compare with the Abbe refractometer to measure the refractive index of distilled water, absolute ethanol, 1,2-propylene glycol, and compare with the standard refraction of distilled water, absolute alcohol, 1,2-propylene glycol For comparison, the measurement method is as fo...

Embodiment 3

[0047] In the present embodiment, the thickness h of the plate image display glass 9 is 3mm, the size of the plate image display glass 9 is the same as the size of the plate transmission glass 10, and the thickness h of the plate transmission glass 10 is 8mm, and the plate image display glass 9 and the plate The transmission glass 10 is H-K9 flat optical glass, its refractive index n is 1.5146, and the incident surface of the flat image display glass 9 is an optical surface, and the outgoing surface is a textured surface. Other components and the coupling relationship of the components are the same as in Embodiment 1.

[0048] Use the liquid refractive index measurement experiment instrument of this embodiment to compare with the Abbe refractometer to measure the refractive index of distilled water, absolute ethanol, 1,2-propylene glycol, and compare with the standard refraction of distilled water, absolute alcohol, 1,2-propylene glycol For comparison, the measurement method i...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

PropertyMeasurementUnit
luminous intensityaaaaaaaaaa
pore sizeaaaaaaaaaa
thicknessaaaaaaaaaa
Login to view more

Abstract

The invention relates to an experimental apparatus for measuring refractive indexes of liquid. A luminescent device is arranged at the lower end of a cassette; a diaphragm is arranged on the cassette above the luminescent device; flat transmission glass is arranged on the upper surface of the diaphragm; flat image display glass is arranged on the upper surface of the flat transmission glass; a window is machined on the left side of the cassette, and the window is provided with a shading cover; bouffant shading paper is arranged at the upper end of the cassette; two stand columns are arranged on a base; millesimal position finder with scales is arranged at the upper ends of the two stand columns; a hand wheel is arranged at the end of the millesimal position finder; the hand wheel is connected with a lens cone of which the second lower part passes through the bouffant shading paper to penetrate into the cassette through a rotary translation switching mechanism; and a sealplate is arranged between the lens cone and the bouffant shading paper. A method for measuring the refractive indexes of liquid through the measuring device comprises the steps that: liquid to be measured forms a liquid film between the flat transmission glass and the flat image display glass; visible light passes through a clear aperture and the flat transmission glass, and the liquid film of the liquid to be measured to form a circular dart spot which takes an incidence point as the centre of a circle on a frosted surface of the flat image display glass; and the refractive indexes of the liquid to be measured are calculated.

Description

technical field [0001] The invention belongs to the technical field of using optical means, that is, using infrared light, visible light or ultraviolet light to test or analyze materials, and specifically relates to using an interference measurement method and a schlieren method to test the refractive index of a liquid. Background technique [0002] The refractive index of liquid is a parameter that must be measured in experiments such as optics, chemical engineering, and biological food, and is also an important measurement parameter in industrial and agricultural production and scientific research. At present, the measurement of liquid refractive index can be divided into two categories: geometric optics and wave optics. Although the measurement accuracy of the wave optics method is high, the cost of the required instruments is high, the operation is difficult, the measurement conditions are strict, and the scope of application is small, and the required instruments are no...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/45
Inventor 苗润才张宗权杨宗立贾西友韩鹏斌
Owner SHAANXI NORMAL UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap