A kind of atr total reflection prism

Abstract

The invention provides an ATR total reflection prism, which includes an integrally formed upper layer and a lower layer, the surfaces of the upper layer and the lower layer are covered with an optical coating, and a detection window is provided. The light hole, the second light guide hole and the third light guide hole use the optical system with multiple reflections to emit light through the optical fiber. The light is incident from the first light guide hole and reflected n times on the surface of the upper layer and the lower layer. Function, finally exit; the number of times n of a single beam of light passing through the detection surface of the measured object once satisfies the following equation: n=D / (2h*tg(2θ)), when the above-mentioned single beam of light passes through the detection surface of the measured object once After reaching the second light guide hole and the third light guide hole, the total reflection will occur again after the optical coating reflection, and the number of reflections is N; the total number of reflections of a single beam of light in the prism satisfies greater than or equal to N*n, with a structure Simple, reasonable design, convenient operation, high detection accuracy and good effect.

Description

technical field [0001] The invention belongs to the technical field of spectrum analysis, and in particular relates to an ATR total reflection prism. Background technique [0002] In the automatic production process of brewing, fermentation, beverage, edible oil and other foods and beverages, it is necessary to conduct real-time and rapid online monitoring of the concentration or content of one or more specific substance components in the product. With its fast, non-destructive, simple and accurate advantages, spectral analysis technology has been applied in online monitoring of food and beverages such as fruit wine, beer, wine, beverages and milk in foreign countries. Domestic online spectral analysis technology is still in the research stage, and there are few similar products on the market, and most of them are used for laboratory analysis. The use of spectral analysis technology to develop miniaturized on-line monitoring instruments for sugars, ethanol, acids, esters, a...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide an ATR total reflection prism to solve the problems of low utilization rate of existing prisms, unsatisfactory detection effect and detection accuracy, etc.

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