Measurement device of low transparency liquid refractometry and method therefor

A low-transparency, measurement-device technology that is applied in the direction of phase-influence characteristic measurement, etc., can solve problems such as difficulty in measurement, difficulty, and insufficient measurement accuracy, and achieve the effects of simple structure, low cost, and high precision

Inactive Publication Date: 2007-08-15
OCEAN UNIV OF CHINA
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Problems solved by technology

[0003] Generally, the refractive index of transparent liquid can be directly measured by Abbe refractometer, but it is difficult to measure the low transparent liquid. Although the existing patent for measuring the refractive index of crude oil (ZH200420052820.7) can measure the refractive index of low transparent liquid, there are deficiencies. For example, the light reflected by the capillary wall will be reflected again by the cylindrical lens and superimposed on the interference pattern of the sample, resulting in a decrease in the contrast of the interference fringes; in addition, the algorithm for inverting the refractive index from the interference fringes requires that all fringes should be clear, but for lower For transparent liquid, only a few fringes on the outside of the interference pattern are clear, and the fringes in the middle are often blurred, which causes considerable difficulties in computer image processing and insufficient measurement accuracy.

Method used

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  • Measurement device of low transparency liquid refractometry and method therefor
  • Measurement device of low transparency liquid refractometry and method therefor
  • Measurement device of low transparency liquid refractometry and method therefor

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Embodiment Construction

[0019] As Fig. 1, the present invention comprises the laser 1 and the beam expander mirror in the housing 12, the coaxial optical system of the bar-shaped light beam that convex lens 5 and cylindrical lens 6 produce, are on the cylindrical lens 6 focal planes Capillary 7 and translucent screen 11 after it and high-precision CCD camera 13 and the computer 14 that contains software program that lead links to each other, it is characterized in that it also includes microscopic object lens 2, micropore 3 that are housed on the three-dimensional adjustment frame 4, and Place the diaphragm 8 in front of the capillary 7, the front focus of the microscopic objective lens 2 coincides with the microhole 3, the rear focus of the microhole 3 coincides with the convex lens 5, the capillary 7 is vertically placed on the five-dimensional fine adjustment frame 9, and the capillary One half of 7 is filled with liquid 10, and the other half is air, and the bar-shaped beam is irradiated on the mi...

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Abstract

This invention relates to one low transparent reflection measurement device and method, wherein, the device comprises shell expansive lens, convex lens and column lens co-axis optical system, capillary on the focus plane and its back semi-transparent screen and computer with software program connected to CCD cameral and wire. This invention is characterized by the following: it comprises at least three-dimensional adjust rack loaded with micro lens and micro hole and grating; the front focus point of micro lens is overlapped with micro hole and the micro hole is overlapped with back focus and the capillary tube is on adjust rack.

Description

technical field [0001] The invention relates to a measuring device and method for the refractive index of low-transparency liquid. Background technique [0002] Refractive index is a very important physical parameter of matter. Some properties of matter must be distinguished by it. Therefore, the measurement of refractive index is extremely important in industrial applications and scientific research. For example, in acrylic fiber factories and wineries, it is necessary to measure the refractive index and average dispersion of transparent and translucent liquids. In chemical fertilizer factories, it is necessary to use refractive index to measure petroleum, animal and vegetable oils and total oil content in soil, and to measure raw materials in the cosmetics industry. And the moisture content of the product, to analyze the content of raw materials and semi-finished products qualitatively or quantitatively. [0003] Generally, the refractive index of transparent liquid can b...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/45G01N21/43
Inventor 杨爱玲张金亮李文东邓美寅
Owner OCEAN UNIV OF CHINA
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