Optical fiber type ATR probe achieving simultaneous measurement of side wall and top end of probe

Abstract

The invention provides an optical fiber type ATR probe achieving simultaneous measurement of the side wall and the top end of the probe. The optical fiber type ATR probe comprises an input optical fiber, an input lens, an output optical fiber, an output lens, an ATR crystal and a shell. The input optical fiber, the input lens, the output optical fiber and the output lens are used for coupling optical signals. The ATR crystal provides ATR measurement. The ATR crystal is a cylindrical crystal, the side section of the ATR crystal is a right trapezoid, the shell is a cylinder with a center round through hole, the front end of the shell is provided with a dip angle equal to that of the trapezoid bevel edge of the ATR crystal, and the bevel edge of the ATR crystal tightly makes contact with the front end of the shell and is packaged into the shell. The input optical fiber, the input lens, the output optical fiber and the output lens are packaged into the shell. The optical fiber type ATR probe can achieve measurement of the side wall and the front end of the probe on probe-motion-limited occasions such as the interiors of pipelines, the influences of external dust, water vapor and the like on the service life of the probe is cut off, and the reliability of long-term use is guaranteed.

Description

technical field [0001] The invention relates to a fiber-optic attenuated total reflection (ATR) probe capable of measuring simultaneously on the side wall and the top of the probe, in particular to a probe for spectral analysis, on the side wall of the probe and perpendicular to the side wall A fiber-optic ATR probe that can measure optically at the top of the probe. Background technique [0002] Spectral analysis is an important technique for characterizing material properties. By measuring the absorption spectrum or transmission spectrum of a material within a certain optical spectrum, qualitative or quantitative analysis of material properties can be performed. Traditional spectral analysis needs to put the sample into the sample chamber of the spectral analyzer for measurement, which limits the application occasions. The new type of spectral analysis can lead the signal light from the sample chamber of the spectrometer through an optical fiber and introduce it into a sp...

AI Technical Summary

Problems solved by technology

Similar to the design of method one, when the probe movement is limited, such as in a small diameter pipe, the probe can measure the spectral properties of the top of the pipe, but cannot tilt and therefore cannot measure the spectral properties of the inner wall of the pipe

[0006] In short, when the above design is limited in the movement of the probe, the measurement point on the crystal at the front end of the probe cannot be in contact with the sample, so the sample cannot be measured

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