CN219142660U

CN219142660U - Mounting and adjusting structure of coaxial Raman probe

Info

Publication number: CN219142660U
Application number: CN202223369302.5U
Authority: CN
Inventors: 唐汝刚; 张志和; 孙靖涵; 朱鑫; 王滕
Original assignee: Qingdao Guoke Hongcheng Photoelectric Technology Co ltd
Current assignee: Qingdao Guoke Hongcheng Photoelectric Technology Co ltd
Priority date: 2022-12-15
Filing date: 2022-12-15
Publication date: 2023-06-06
Anticipated expiration: 2032-12-15

Abstract

The utility model discloses an assembling and adjusting structure of a coaxial Raman probe, which comprises a shell, wherein the bottom of one side of the shell is fixedly connected with a light outlet, the top of the other side of the shell is inserted with a transmitting path optical fiber, the bottom of the other side of the shell is inserted with a receiving path optical fiber, and the inside of the shell is provided with a light path structure convenient to adjust. When the coaxial Raman probe is used, the corresponding light in the Raman light wavelength range is used for polishing from the receiving path optical fiber, the center of a light spot is marked on the detector, then the center of the light spot is polished from the transmitting path optical fiber, the light spot of the path is received on the detector, the light spots of the two paths of light are concentric on the detector through the angle of the second inclined mirror, the second inclined mirror is fixed, and the two paths of light share the light path part to be adjusted at the moment, so that the function of conveniently adjusting the light path is realized, and the problem that the device does not have the function of conveniently adjusting the light path is solved.

Description

Mounting and adjusting structure of coaxial Raman probe

Technical Field

The utility model relates to the technical field of adjustment structures, in particular to an adjustment structure of a coaxial Raman probe.

Background

Due to the molecular fingerprint characteristics of raman spectroscopy and the enhancing effect of SERS, the application of raman detection is becoming more and more widespread. Along with diversification of Raman measurement detection sites and detection modes, the small portable high-flux Raman spectrometer has more application prospects. The spectrometer analyzes the substance by emitting excitation light to excite the substance to produce scattered raman light. The raman scattering is weak in nature, so that the effect of effectively improving the light loss caused by the adjustment process plays a vital role in improving the sensitivity of one spectrometer, the current mainstream adjustment mode is low in efficiency, the problem of large light loss exists in the adjustment process, and the function of conveniently adjusting the light path is not provided.

At present, a novel coaxial Raman probe assembling and adjusting structure is provided to solve the problems.

Disclosure of Invention

The utility model aims to provide an adjusting structure of a coaxial Raman probe, which solves the problem that the function for adjusting the optical path is not convenient in the background technology.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides a coaxial Raman probe's dress transfers structure, includes the casing, the bottom fixedly connected with light outlet of casing one side, peg graft at the top of casing opposite side has the transmission way optic fibre, peg graft in the bottom of casing opposite side has the receiving path optic fibre, peg graft in the inside of light outlet one side has an external screw thread section of thick bamboo, the opposite side fixedly connected with of casing two sets of internal thread seats, peg graft in one side of internal thread seat has the optic fibre intubate, the inside of casing is provided with the adjustment light path structure of being convenient for.

The utility model provides a light path structure is convenient for adjust, it includes logical chamber to go up, go up logical chamber setting in the inside top of casing, the inside bottom of casing is provided with down logical chamber, go up one side of logical intracavity portion and be fixedly connected with fixed cylinder respectively, one side fixedly connected with first lens of fixed cylinder inside, the inside opposite side fixedly connected with second lens of fixed cylinder, first inclined plane mirror is installed to the opposite side slant of logical intracavity portion down, the second inclined plane mirror is installed to the opposite side slant of going up logical intracavity portion.

Preferably, the insides of the lower through cavity and the upper through cavity are communicated.

Preferably, the transmitting path optical fiber and the receiving path optical fiber are respectively communicated with the lower through cavity and the upper through cavity.

Preferably, the threads on the outer part of the external thread cylinder are matched with the threads on the inner part of the light outlet.

Preferably, a third lens is fixedly connected to one side of the inside of the external thread cylinder, an adjusting ring is fixedly connected to one side of the outside of the external thread cylinder, and the shell, the light outlet and the inside of the external thread cylinder are communicated.

Preferably, an inner rubber ring is glued in the optical fiber cannula, an optical fiber groove is transversely formed in the middle of the inner rubber ring, and the inner diameter of the optical fiber groove is consistent with the outer diameters of the transmitting path optical fiber and the receiving path optical fiber.

Compared with the prior art, the utility model has the beneficial effects that: the coaxial Raman probe mounting and adjusting structure not only realizes the function of conveniently adjusting the light path and the function of conveniently adjusting the output light, but also realizes the function of conveniently fixing the optical fiber circuit;

(1) When the optical fiber coaxial path is adjusted, the corresponding light in the optical wavelength range of the Raman is used for polishing from the receiving path optical fiber, the light with the corresponding wavelength is output to the detector through the lens on the lower path optical fiber, the light is polished from the position of the transmitting path optical fiber, the light is reflected to the detector through the first inclined mirror until reaching the second inclined mirror, the sharpness of the boundary of the light spot is observed on the detector, the light spot is sharp through adjusting the distance between the optical fiber and the coupling lens, the optical fiber position is fixed, the coupling between the optical fiber and the lens is completed, when the coaxiality of two paths of light and the optical path is adjusted, the corresponding light in the optical wavelength range of the Raman is used for polishing from the receiving path optical fiber, the light is output to the detector through the lens on the lower path optical fiber, the center of the light spot is marked on the detector, the light is polished from the position of the transmitting path optical fiber, the light spot is received on the detector, the light spot on the center of the light spot is observed, the light spot is offset between the center of the light spot and the receiving path optical fiber, the light is offset from the second inclined mirror, the two inclined mirrors are coaxial, the optical path is convenient to adjust the optical path is realized, and the optical path is convenient.

(2) Through being provided with external screw thread section of thick bamboo, third lens and adjusting ring, during the use, light path is through lens reflection back along light outlet output, can appear finely diffusing when light passes through the third lens, can adjust the position of third lens through the adjusting ring on the rotatory external screw thread section of thick bamboo, makes light focusing performance better, has realized the function of being convenient for adjust output light.

(3) Through being provided with internal thread seat, optic fibre intubate, interior gum ring and optic fibre groove, during the use, when installing transmission way optic fibre and receiving way optic fibre, insert two way optic fibre along the optic fibre groove at the interior gum ring center of optic fibre intubate, adjust length, then with optic fibre intubate along internal thread seat screw in, the position that the interior gum ring can make optic fibre remains stable, conveniently carries out the adjustment of a small margin simultaneously, has realized the function of being convenient for fixed optic fibre circuit.

Drawings

FIG. 1 is a schematic cross-sectional elevation view of the present utility model;

FIG. 2 is a schematic view of an external thread cylinder according to the present utility model, partially in cross-section;

FIG. 3 is an enlarged partial cross-sectional view of the structure of FIG. 1A according to the present utility model;

fig. 4 is an enlarged partial cross-sectional schematic view of the fiber optic cannula of the present utility model.

In the figure: 1. a housing; 2. a lower through cavity; 3. an upper through cavity; 4. a fixed cylinder; 5. a first lens; 6. a second lens; 7. a first beveled mirror; 8. a second beveled mirror; 9. a light outlet; 10. an external thread cylinder; 11. a third lens; 12. an adjusting ring; 13. a transmission path optical fiber; 14. a receiving path optical fiber; 15. an internal thread seat; 16. a fiber cannula; 17. an inner rubber ring; 18. an optical fiber slot.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Example 1: referring to fig. 1-4, an adjustment structure of a coaxial raman probe comprises a housing 1, wherein a light outlet 9 is fixedly connected to the bottom of one side of the housing 1, a transmitting path optical fiber 13 is inserted into the top of the other side of the housing 1, a receiving path optical fiber 14 is inserted into the bottom of the other side of the housing 1, and a light path structure convenient to adjust is arranged in the housing 1;

referring to fig. 1-4, an adjustment structure of a coaxial raman probe further comprises a light path structure convenient to adjust, the light path structure convenient to adjust comprises an upper through cavity 3, the upper through cavity 3 is arranged at the top end of the inside of the shell 1, a lower through cavity 2 is arranged at the bottom end of the inside of the shell 1, one sides of the inside of the lower through cavity 2 and the upper through cavity 3 are respectively fixedly connected with a fixed cylinder 4, one side of the inside of the fixed cylinder 4 is fixedly connected with a first lens 5, the other side of the inside of the fixed cylinder 4 is fixedly connected with a second lens 6, a first inclined mirror 7 is obliquely arranged at the other side of the inside of the lower through cavity 2, and a second inclined mirror 8 is obliquely arranged at the other side of the inside of the upper through cavity 3;

the interiors of the lower through cavity 2 and the upper through cavity 3 are communicated, and the transmitting path optical fiber 13 and the receiving path optical fiber 14 are respectively communicated with the lower through cavity 2 and the upper through cavity 3, so that the light path can be conveniently adjusted;

specifically, as shown in fig. 1 and 3, light is shone from the transmitting path optical fiber 13, light passes through the first lens 5 and the second lens 6 on the fixed cylinder 4 in the upper through cavity 3 until reaching the second inclined plane mirror 8, then is reflected to the detector through the first inclined plane mirror 7, the sharpness of the boundary of the light spot is observed on the detector, the light spot is sharp by adjusting the distance between the optical fiber and the coupling lens, the optical fiber position is fixed, the coupling between the optical fiber and the lens is completed, when the coaxiality of two paths of light common path parts is adjusted, the corresponding light in the raman optical wavelength range is shone from the receiving path optical fiber 14, the light is output to the detector through the lens on the lower through cavity 2, the center of the light spot is marked on the detector, then the light spot of the path is shone from the transmitting path optical fiber 13, the light spot of the path is received on the detector, the offset between the center of the light spot of the path and the receiving path is observed, the light spot of the two paths of light is concentric on the detector through the angle of the second inclined plane mirror 8, the second inclined plane mirror 8 is fixed, and the light path sharing part is adjusted.

Example 2: an external thread cylinder 10 is inserted into one side of the light outlet 9, threads outside the external thread cylinder 10 are matched with threads inside the light outlet 9, a third lens 11 is fixedly connected to one side inside the external thread cylinder 10, an adjusting ring 12 is fixedly connected to one side outside the external thread cylinder 10, and the shell 1, the light outlet 9 and the interior of the external thread cylinder 10 are communicated, so that light outlet can be conveniently adjusted, and diffusion is reduced;

specifically, as shown in fig. 1 and 2, light passing through the third lens 11 is slightly diffused, and the position of the third lens 11 can be adjusted by rotating the adjusting ring 12 on the external thread cylinder 10, so that the light focusing performance is better.

Example 3: two groups of internal thread seats 15 are fixedly connected to the other side of the shell 1, an optical fiber insertion pipe 16 is inserted into one side of each internal thread seat 15, an internal rubber ring 17 is glued in the optical fiber insertion pipe 16, an optical fiber groove 18 is transversely formed in the middle of the internal rubber ring 17, the inner diameter of the optical fiber groove 18 is consistent with the outer diameters of the optical fibers 13 of the transmitting path and the optical fibers 14 of the receiving path, and the optical fibers can be fixed and simultaneously are convenient to draw and adjust;

specifically, as shown in fig. 1 and 4, two optical fibers are inserted along an optical fiber groove 18 in the center of an inner rubber ring 17 in an optical fiber cannula 16, the length is adjusted, then the optical fiber cannula 16 is screwed in along an inner screw seat 15, and the inner rubber ring 17 can keep the position of the optical fibers stable and simultaneously facilitate small-amplitude adjustment.

Working principle: when the optical fiber and lens coupling adjustment is carried out, firstly, the detector is arranged at the detection position of the probe, light with corresponding wavelength is used for shining from the optical fiber 13 of the transmitting path, the light passes through the first lens 5 and the second lens 6 on the fixed cylinder 4 in the upper cavity 3 until reaching the second inclined plane mirror 8, the light is reflected to the detector through the first inclined plane mirror 7, the sharpness of the boundary of the light spot is observed on the detector, the light spot is sharp through adjusting the distance between the optical fiber and the coupling lens, the optical fiber position is fixed, the coupling between the optical fiber and the lens is finished, when the coaxiality of the two paths of light and the common optical path part is adjusted, the corresponding light in the Raman optical wavelength range is used for shining from the optical fiber 14 of the receiving path, the light is output to the detector through the lens on the lower cavity 2, the center of the light spot is marked on the detector, then the light is shining from the optical fiber 13 of the transmitting path, the light spot on the detector is received, the center of the light spot on the path is observed, the center of the light spot on the receiving path is shifted, the light spot on the receiving path is the second inclined plane mirror 8 is adjusted, the light spot on the concentric optical path 8 is fixed on the two paths of the detector, and the common optical path part is adjusted. The light path is output along the light outlet 9 after being reflected by the lens, and light rays can be finely diffused when passing through the third lens 11, and the position of the third lens 11 can be adjusted by rotating the adjusting ring 12 on the external thread cylinder 10, so that the light focusing performance is better. When the transmitting path optical fiber 13 and the receiving path optical fiber 14 are installed, the two paths of optical fibers are inserted into the optical fiber groove 18 in the center of the inner rubber ring 17 in the optical fiber insertion tube 16, the length is adjusted, then the optical fiber insertion tube 16 is screwed in along the inner thread seat 15, the position of the optical fibers can be kept stable by the inner rubber ring 17, and meanwhile small-amplitude adjustment is convenient.

It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present utility model may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims

1. The utility model provides a coaxial Raman probe's dress transfers structure, includes casing (1), its characterized in that: the light source is characterized in that the bottom of one side of the shell (1) is fixedly connected with a light outlet (9), the top of the other side of the shell (1) is inserted with an emitting path optical fiber (13), the bottom of the other side of the shell (1) is inserted with a receiving path optical fiber (14), the inside of one side of the light outlet (9) is inserted with an external thread cylinder (10), the other side of the shell (1) is fixedly connected with two groups of internal thread seats (15), one side of the internal thread seat (15) is inserted with an optical fiber cannula (16), and the inside of the shell (1) is provided with a light path structure convenient to adjust;

the utility model provides a light path structure is convenient for adjust, it leads to chamber (3) including going up, go up logical chamber (3) and set up on the inside top of casing (1), the inside bottom of casing (1) is provided with down logical chamber (2), go up one side of logical chamber (3) inside and fixedly connected with fixed cylinder (4) respectively down, one side fixedly connected with first lens (5) of fixed cylinder (4) inside, the inside opposite side fixedly connected with second lens (6) of fixed cylinder (4), first inclined plane mirror (7) are installed to the inside opposite side slant of logical chamber (2) down, second inclined plane mirror (8) are installed to the inside opposite side slant of going up logical chamber (3).

2. The adjustment structure of a coaxial raman probe according to claim 1, wherein: the insides of the lower through cavity (2) and the upper through cavity (3) are communicated.

3. The adjustment structure of a coaxial raman probe according to claim 1, wherein: the transmitting path optical fiber (13) and the receiving path optical fiber (14) are respectively communicated with the lower through cavity (2) and the upper through cavity (3).

4. The adjustment structure of a coaxial raman probe according to claim 1, wherein: the threads on the outer side of the external thread cylinder (10) are matched with the threads on the inner side of the light outlet (9).

5. The adjustment structure of a coaxial raman probe according to claim 1, wherein: one side of the inside of the external thread cylinder (10) is fixedly connected with a third lens (11), one side of the outside of the external thread cylinder (10) is fixedly connected with an adjusting ring (12), and the inside of the shell (1), the light outlet (9) and the inside of the external thread cylinder (10) are communicated.

6. The adjustment structure of a coaxial raman probe according to claim 1, wherein: the inside of fiber cannula (16) glues has interior gum ring (17), the intermediate position department of interior gum ring (17) transversely is provided with fiber groove (18), the internal diameter in fiber groove (18) is unanimous with the external diameter of transmission way optic fibre (13), receiving way optic fibre (14).