Refractive index measurement device and cell for refractive index measurement device

Abstract

This refractive index measurement device comprises: a cell 1 for storing a liquid sample therein, a fixing member 26 for positioning and fixing the cell 1, a light source 21 for irradiating light of aprescribed wavelength onto the cell 1 via a slit 22, a detector 23 for detecting light that has been irradiated from the light source 21 and has passed through the liquid sample within the cell 1, and a control unit 24 for calculating the refractive index of the liquid sample by, on the basis of the light detected by the detector 23, detecting the angle of the travel direction of the light that has passed through the liquid sample. The cell 1 is configured from a quartz upper surface plate and a quartz body. The body has a storage area 13 that is for storing the liquid sample and is formed inthe body as a recess. Further, the upper surface plate has a pair of holes 14 for filling the storage area 13 with the liquid sample and for discharging the liquid sample from the inside of the storage area 13.

Description

technical field [0001] The present invention relates to a refractive index measuring device for measuring the refractive index of a liquid sample and a cell for the refractive index measuring device. Background technique [0002] Such a refractive index measuring device includes a light source for irradiating light to a liquid sample, and a detector for detecting light irradiated from the light source and passing through the liquid sample, and has a configuration in which The angle of the traveling direction of light passing through the liquid sample is detected, thereby calculating the refractive index of the liquid sample. In addition, such a refractive index measuring device has a configuration in which a light-transmitting V-shaped cubic prism having V-shaped grooves is used, and the liquid sample is stored in the V-shaped cubic prism of the V-shaped cubic prism. The refractive index was measured on the state inside the groove. [0003] However, in the case of such a c...

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Problems solved by technology

[0003] However, in the case of such a configuration, if the volatility of the liquid sample is high, the liquid sample will continue to evaporate during the measurement, so there is a problem that the refractive index of the liquid sample cannot be accurately measured.

In addition, in the case of measuring the refractive index of various liquid samples, after measuring the refractive index of the liquid sample, it is necessary to remove the V-shaped cube prism from the device, clean the V-groove of the V-shaped cube prism, and install the V-shaped cube prism again. Cube prism, so not only the work is cumbersome, but also the optical configuration of the V-shaped cube prism relative to the light source or detector needs to be adjusted again, which also causes the problem that the measurement of the refractive index takes time

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