CN-121994719-A - Optical fiber probe

Abstract

The embodiment of the application provides an optical fiber probe, which comprises a probe main body and an optical path component. The probe body is provided with a first incident light path and an emergent light path, the light path component comprises a reflection component and a probe window component, the reflection component is provided with an incident area and an emergent area, the reflection component and the first incident light path are arranged at intervals to form an interval space, the probe window component comprises a first window piece and a second window piece, a liquid passing port communicated with the outside is formed between the first incident light path and the incident area at intervals, a first light path passing through the second window piece, the liquid passing port and the first window piece is formed between the first incident light path and the incident area, the emergent area and the emergent light path are sealed, a second light path is formed between the emergent area and the emergent light path, and the light propagation directions of the first light path and the second light path are different. The optical fiber probe can reduce the risk of bubble retention at the liquid passing port, effectively prevent abnormal spectrum signals caused by the fact that optical signals pass through the bubbles, and enable the measurement result to be more accurate.

Inventors

• WANG LING
• ZHANG LIHUA
• QIAN HONGJUAN

Assignees

• 中国原子能科学研究院

Dates

Publication Date

20260508

Application Date

20260104

Claims (10)

1. 1. A fiber optic probe, comprising: the main body of the probe is provided with a probe, the probe body is provided with a first incident light path and an emergent light path; The optical path component comprises a reflection component and a probe window component, wherein the reflection component is provided with an incidence area and an emergent area, the reflection component is arranged with the first incidence optical path at intervals to form an interval space, the probe window component comprises a first window piece and a second window piece, the first window piece is positioned at one side, close to the reflection component, in the interval space, the second window piece is positioned at one side, close to the probe main body, in the interval space, the first window piece and the second window piece are spaced to form a liquid passing port communicated with the outside, a first optical path passing through the second window piece, the liquid passing port and the first window piece is formed between the first incidence optical path and the incidence area, the emergent area and the emergent optical path are sealed, a second optical path is formed between the emergent area and the emergent optical path, the propagation directions of light in the first optical path and the second optical path are different, and a third optical path from the incidence area to the emergent area is formed in the reflection component.
2. 2. The fiber optic probe of claim 1, wherein the reflective assembly comprises a beam splitter positioned on the third optical path, the third optical path comprising a second incident optical path, a reflected optical path, and a transmitted optical path, the beam splitter positioned where the second incident optical path, the reflected optical path, and the transmitted optical path intersect, the second incident optical path being formed between the incident area and the beam splitter, the reflected optical path and the transmitted optical path being formed between the beam splitter and the exit area.
3. 3. The fiber optic probe of claim 2, wherein the second optical path comprises a first split optical path and a second split optical path, the first split optical path being spaced apart from the second split optical path, the first split optical path being contiguous with the reflective optical path, the second split optical path being contiguous with the transmissive optical path.
4. 4. A fiber optic probe according to claim 2 including a first lens and a second lens, the first lens being located on the reflected light path and the second lens being located on the transmitted light path such that the direction of propagation of light passing through the first lens and the second lens is the same.
5. 5. A fiber optic probe according to claim 2 wherein the reflective assembly comprises at least one optical reflective surface, the second incident light path comprises a first sub-light path and a second sub-light path, the first sub-light path is formed between the incident area and the optical reflective surface, the second sub-light path is formed between the optical reflective surface and the beam splitter, and the directions of propagation of light in the first sub-light path and the second sub-light path are different.
6. 6. A fiber optic probe according to claim 5 wherein at least a portion of the first sub-optical path is opposite in direction of propagation of light in at least a portion of the reflected optical path, and/or, At least a partial region of the first sub-beam path is opposite to the propagation direction of the light in at least a partial region of the transmission beam path.
7. 7. A fiber optic probe according to any one of claims 1 to 6 wherein the reflective assembly comprises a first housing comprising a window platform having the entrance region, the first window being disposed on the window platform, at least a portion of the area of the first window protruding from the window platform towards one side of the second window to together form a stepped structure.
8. 8. A fiber optic probe according to any one of claims 1 to 6 wherein the optical path member is detachably connected to the probe body.
9. 9. The fiber optic probe of any of claims 1-6, wherein the fiber optic probe comprises a light source fiber optic line and a detection spectrum fiber optic line, the light source fiber optic line is connected to the first incident light path, the detection spectrum fiber optic line comprises a detection fiber bundle, a first detection fiber bundle and a second detection fiber bundle, one end of the detection fiber bundle is connected to the exit light path, and the other end of the detection fiber bundle is connected to the first detection fiber bundle and the second detection fiber bundle, respectively.
10. 10. A fiber optic probe according to claim 9 wherein the sensing fiber optic bundle includes a plurality of first optical fibers, each of the first optical fiber arrays being disposed in a cross section perpendicular to the first optical fibers, and/or, The first detection optical fiber bundle comprises a plurality of second optical fibers, each of which is arranged in a column in a section perpendicular to the second optical fibers, and/or, The second detection optical fiber bundle comprises a plurality of third optical fibers, and each third optical fiber is arranged in a row on a section perpendicular to the third optical fibers.

Description

Optical fiber probe Technical Field The application relates to the technical field of spectrum measurement, in particular to an optical fiber probe. Background The spectrum measurement technology is an analysis technical means which is important in scientific research and industrial application, and the immersion type optical fiber probe can directly contact a sample, can collect spectrum data of the sample without sampling, becomes a core component of on-line and in-situ analysis equipment, and is increasingly widely applied in a plurality of fields. In the related art, the immersion type optical fiber probe adopts a structural design of double optical path, the physical gap of the liquid passing port is half of the optical path, and the optical signal penetrates through the sample twice. However, in the measurement of short optical path and the measurement of a sample with high viscosity, bubbles in the sample are easy to stay in a narrow liquid passing port, and abnormal spectrum signals are caused by the light signals passing through the bubbles, so that the measurement result is inaccurate. Disclosure of Invention Accordingly, a primary object of the embodiments of the present application is to provide an optical fiber probe capable of improving measurement accuracy. In order to achieve the above object, the technical solution of the embodiment of the present application is as follows: The embodiment of the application provides an optical fiber probe, which comprises the following components: the main body of the probe is provided with a probe, the probe body is provided with a first incident light path and an emergent light path; The optical path component comprises a reflection component and a probe window component, wherein the reflection component is provided with an incidence area and an emergent area, the reflection component is arranged with the first incidence optical path at intervals to form an interval space, the probe window component comprises a first window piece and a second window piece, the first window piece is positioned at one side, close to the reflection component, in the interval space, the second window piece is positioned at one side, close to the probe main body, in the interval space, the first window piece and the second window piece are spaced to form a liquid passing port communicated with the outside, a first optical path passing through the second window piece, the liquid passing port and the first window piece is formed between the first incidence optical path and the incidence area, the emergent area and the emergent optical path are sealed, a second optical path is formed between the emergent area and the emergent optical path, the propagation directions of light in the first optical path and the second optical path are different, and a third optical path from the incidence area to the emergent area is formed in the reflection component. In one embodiment, the reflection assembly includes a beam splitter, the beam splitter is located on the third optical path, the third optical path includes a second incident optical path, a reflection optical path and a transmission optical path, the beam splitter is located at a position where the second incident optical path, the reflection optical path and the transmission optical path intersect, the second incident optical path is formed between the incident area and the beam splitter, and the reflection optical path and the transmission optical path are formed between the beam splitter and the exit area. In one embodiment, the second optical path includes a first optical path and a second optical path, where the first optical path is separated from the second optical path, the first optical path is connected to the reflection optical path, and the second optical path is connected to the transmission optical path. In one embodiment, the fiber optic probe includes a first lens and a second lens, the first lens being positioned on the reflected light path and the second lens being positioned on the transmitted light path such that the propagation directions of light passing through the first lens and the second lens are the same. In one embodiment, the reflection assembly comprises at least one optical reflection surface, the second incident light path comprises a first sub-light path and a second sub-light path, the first sub-light path is formed between the incident area and the optical reflection surface, the second sub-light path is formed between the optical reflection surface and the spectroscope, and the propagation directions of light in the first sub-light path and the second sub-light path are different. In one embodiment, at least a partial region of the first sub-beam path is opposite to the propagation direction of the light in at least a partial region of the reflection beam path, and/or, At least a partial region of the first sub-beam path is opposite to the propagation direction of the light in at least a partial re