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Liquid prism refractometer

A liquid prism and refractometer technology, which is used in the measurement of phase influence characteristics, instruments, measuring devices, etc., can solve the problems of small refractive index measurement range and complex structure, and achieve a wide refractive index measurement range and accuracy and measurement range. Wide and simple structure

Inactive Publication Date: 2010-05-12
NANJING UNIV OF POSTS & TELECOMM
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0016] Technical problem: The purpose of this invention is to propose a liquid prism refractometer, which solves the problems of the current Abbe refractometer and other prism measuring instruments with a small range of refractive index measurement and a relatively complicated structure.

Method used

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specific Embodiment 1

[0031] Specific embodiment 1, two solid prisms in the Abbe refractometer are replaced by the liquid prism in the present invention, and the rear light receiving device 6 is a reading telescope of the Abbe refractometer to form a visual liquid prism refractometer.

specific Embodiment 2

[0032] Embodiment 2, the light-receiving device 6 is an array of light detectors, followed by a signal processor and a digital display to automatically detect the position of the boundary line between light and dark and display the value of the refractive index, forming a hand-held portable refractometer.

specific Embodiment 3

[0033] Specific embodiment 3, the light-receiving device 6 is a photodetector array, followed by a signal processor and a computer, and software is programmed to control and display, measure and calculate the refractive index of the liquid to be measured and give more information such as concentration and density .

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Abstract

The invention relates to a liquid prism refractometer, in particular to a novel structure of the liquid prism refractometer used for measuring liquid refractive index and a work principle thereof, belonging to the technical field of devices for measuring the refractive index, concentration and density of liquid. The refractometer comprises a monochromatic light source (1), a hollow triple prism (5) and an optical receiving device (6), wherein the hollow triple prism (5) is made of transparent material without limitation of the refractive index, the outer side of a light incidence surface (2) is ground to be a rough surface, and an included angle between the light incidence surface (2) and a light-emitting surface (3) is 60 degrees; an upper bottom surface (4) is provided with a movable cover which is used for canning and pouring the liquid; and a liquid prism can be formed when the liquid is filled. Therefore, the refractive index, the concentration value and the density value of the liquid to be measured can be measured by utilizing the measurement principle of a glancing incidence method. Compared with the existing common prism measuring instruments such as Abbe refractometer and the like, the liquid prism refractometer has wider refractive index measuring range, and simple structure, easy manufacturing, lower cost and higher accuracy.

Description

technical field [0001] The invention relates to a novel structure and working principle of a liquid prism refractometer for measuring liquid refractive index, and belongs to the technical field of liquid refractive index and concentration and density measuring devices. Background technique [0002] Liquid optics is the core component of microfluidic optics, a popular subject. Liquid prism is a kind of prism mainly composed of liquid, which can be used alone or integrated in microfluidic chips for various applications. The optical properties of the liquid prism can be flexibly changed by filling the liquid or not or by adjusting the liquid concentration and changing the type of liquid. This can be applied to: optical communication devices, fuel lasers, liquid analysis in the field of biomedicine, optical imaging systems, inclination Measurement systems such as measurement and teaching experiments, etc. [0003] In the field of liquid analysis in biomedicine, industry, and s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/41G01N9/00
CPCG01N21/4133G01N2021/4153
Inventor 万静梁忠诚
Owner NANJING UNIV OF POSTS & TELECOMM
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