Long-optical-path detection pool

Abstract

The invention discloses a long-optical-path detection pool. The long-optical-path detection pool comprises a tubular colorimetric pool with two opened ends, wherein a detection light source is arranged at one end of the colorimetric pool, and an optical detector is arranged at the other end of the colorimetric pool. The long-optical-path detection pool is characterized in that the colorimetric pool comprises a spiral portion. According to the long-optical-path detection pool adopting a spiral structure, the optical path is greatly increased, the integral size is reduced, and the defect of fragile structure due to the overlong colorimetric pool is overcome. The long-optical-path detection pool has the advantages of simple structure, long optical path, high strength and the like.

Description

[0001] technical field [0002] The invention relates to an optical detection device, especially an optical detection device for fluid detection. Background technique [0003] In the current fluid detection technology in the market, the colorimetric cell is one of the core components, and its structure plays a decisive role in the accuracy of detection performance. Different substances in the fluid absorb light of different wavelengths differently, so the method to detect this substance is to use the detection light that it absorbs most easily to walk a certain distance (that is, the optical path) in the colorimetric cell, and measure the light passing through from the other end. The specific detection light intensity of the colorimetric cell is used to calculate the consumption of the light intensity by the fluid in the colorimetric cell (ie light loss), and then calculate the concentration of this substance in the fluid in the colorimetric cell. When the concentration of ...

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Problems solved by technology

However, its disadvantages are also obvious. The slender cuvette will inevitably make the overall size of the instrument large, and the cuvette is mostly made of glass material with good optical properties, which is fragile and has such a slender shape. , making the colorimetric cell very fragile and fragile, and the transportation and protection devices of the instrument using this colorimetric cell are also very strict

And in some cases, the constant temperature protection of the colorimetric cell is required, and the thermostat device of the slender colorimetric cell will also be very large, so you need to be very careful during use

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