Laser detection equipment based on carbon dot fluorescence characteristics

Abstract

The utility model relates to the technical field of optical detection, and discloses a laser detection device based on carbon dot fluorescence characteristics, which comprises a laser generator and a mounting plate, the mounting plate comprises an upper mounting plate and a lower mounting plate, the middle of the mounting plate is provided with a light hole, a mounting cylinder is arranged between the upper mounting plate and the lower mounting plate, and the upper mounting plate and the lower mounting plate are provided with a light guide plate. According to the utility model, the diaphragm can be cooled through the heat dissipation pipe arranged around the mounting hole, the diaphragm is prevented from being damaged by high temperature, and when different diaphragms are replaced at the same time, the diaphragm can be conveniently replaced, so that the cost is reduced, and the working efficiency is improved. And the diaphragm can be taken out for replacement by separating the upper mounting plate from the mounting cylinder.

Description

TECHNICAL FIELD

[0001] The utility model relates to optical detection field especially, relate to a kind of laser detection equipment based on carbon dot fluorescence characteristic. BACKGROUND

[0002] Carbon dot with good water solubility can emit fluorescence of specific wavelength under laser irradiation. By detecting this fluorescence signal, the optical properties, concentration, etc. of carbon dots can be analyzed. For example, in the field of biological imaging, carbon dot-labeled biomolecules are irradiated with a laser, and the position and distribution of the biomolecules are determined by detecting the fluorescence emitted by the carbon dots. An optical diaphragm is one of the supporting equipment of a laser generator. It can control the light flux, limit the size and shape of the light beam, and improve the imaging quality. The optical diaphragm is usually made of metal. If the laser irradiation time is too long or the laser power is too high, the optical diaphragm may be damaged. Therefore, in order to cool the optical diaphragm and facilitate its replacement, the applicant proposes a laser detection equipment based on carbon dot fluorescence characteristics SUMMARY

[0003] To solve the technical problem of heat dissipation of the optical diaphragm, the utility model provides a kind of laser detection equipment based on carbon dot fluorescence characteristic.

[0004] The utility model discloses the following technical scheme is realized: a kind of laser detection equipment based on carbon dot fluorescence characteristic, including laser generator, still include:

[0005] Mounting plate, the mounting plate includes upper mounting plate and lower mounting plate, the light transmission hole is opened in the mounting plate middle, the upper end of the upper mounting plate is connected with the laser generator;

[0006] Mounting cylinder, the mounting cylinder is arranged between the upper mounting plate and the lower mounting plate;

[0007] Optical diaphragm, the optical diaphragm is movably installed in the mounting cylinder, and the inside of the mounting cylinder and the outside of the optical diaphragm are surrounded by a heat pipe.

[0008] As a further improvement of the above-mentioned scheme, the mounting cylinder is fixedly connected with a connecting flange at its upper and lower ends, and the mounting cylinder is bolted to the mounting plate through the connecting flange. An installation hole is formed in the inside of the mounting cylinder, and the heat pipe is wrapped around the outside of the installation hole, with both ends of the heat pipe extending out of the mounting cylinder.

[0009] As a further improvement of the above-mentioned scheme, a limiting ring is further provided on the inner wall of the installation hole, and the optical diaphragm is installed in the installation hole with its lower end abutting against the limiting ring.

[0010] As a further improvement of the above-mentioned scheme, a gasket is further provided in the installation hole and located at the upper end of the optical diaphragm.

[0011] As a further improvement of the above-mentioned scheme, the upper end surface of the lower mounting plate is provided with a positioning ring, and the mounting cylinder is sleeved outside the positioning ring.

[0012] As a further improvement of the above-mentioned scheme, the positioning ring is provided with a dust collection groove.

[0013] As a further improvement of the above-mentioned scheme, the bottom of the lower mounting plate is further provided with a magnetic dust cover.

[0014] Compared with the prior art, the beneficial effects of the present application are that:

[0015] The heat dissipation pipe arranged around the mounting hole can cool the diaphragm, avoid high temperature damage to the diaphragm, and when different diaphragms are replaced, the upper mounting plate and the mounting cylinder are separated to take out the diaphragm for replacement. BRIEF DESCRIPTION OF DRAWINGS

[0016] Fig. 1 It is a schematic diagram of the overall structure of the present application;

[0017] Fig. 2 It is a sectional view of the internal structure of the mounting plate and the mounting cylinder of the present application;

[0018] Fig. 3 It is a semi-sectional schematic diagram of the mounting cylinder and the lower mounting plate of the present application.

[0019] Main symbol explanation: 1, laser generator; 2, mounting plate; 3, upper mounting plate; 4, lower mounting plate; 5, light transmission hole; 6, mounting cylinder; 7, connecting flange; 8, mounting hole; 9, limiting ring; 10, gasket; 11, heat dissipation pipe; 12, positioning ring; 13, dust collection groove; 14, dust cover; 15, diaphragm. DETAILED DESCRIPTION

[0020] In the following, the present application will be further described in conjunction with the drawings and specific embodiments, and it should be noted that the following described embodiments or technical features can be combined to form new embodiments without conflict.

[0021] Please combine Figs. 1-3 The laser detection equipment based on the carbon dot fluorescence characteristics of the embodiment comprises a laser generator 1, a mounting cylinder 6 and a mounting plate 2. The mounting plate 2 is provided with two groups, including an upper mounting plate 3 and a lower mounting plate 4. The upper mounting plate 3 and the lower mounting plate 4 are both provided with light transmission holes 5 for laser to pass through. The upper end surface of the upper mounting plate 3 is connected with the laser generator 1.

[0022] The installation cylinder 6 is arranged between the upper installation plate 3 and the lower installation plate 4. The installation cylinder 6 is fixedly arranged with a connecting flange 7 at the upper end and the lower end, and is fixedly connected with the upper installation plate 3 and the lower installation plate 4 through the connecting flange 7 and bolts.

[0023] The installation cylinder 6 is internally provided with a through installation hole 8, and a stepped limiting ring 9 is arranged on the inner hole wall of the installation hole 8. A diaphragm 15 is movably arranged in the installation hole 8, and the lower end of the diaphragm 15 is in abutment with the limiting ring 9 when the diaphragm 15 is arranged in the installation hole 8. The limiting ring 9 plays a supporting and limiting role.

[0024] Since the upper end of the installation cylinder 6 is connected with the upper installation plate 3, in order to increase the stability of the diaphragm 15, a gasket 10 is arranged in the installation hole 8 and at the upper end of the diaphragm 15. That is, the gasket 10 is arranged after the diaphragm 15 is arranged. The upper end surface of the gasket 10 is in abutment with the upper installation plate 3. Therefore, the diaphragm 15 is pressed in the installation hole 8 in cooperation with the upper installation plate 3 and the gasket 10.

[0025] The diaphragm 15 is composed of a funnel-shaped structure of the upper half and a straight cylinder structure (not marked in the figure) of the lower half. The laser generator 1 emits laser, part of the light passes through the straight cylinder and then irradiates on the carbon dots. Part of the light will irradiate on the funnel-shaped structure of the diaphragm 15 and be blocked. Therefore, the diameter of the straight cylinder is the size of the laser beam. By arranging diaphragms 15 with different diameters (straight cylinder segments), the size of the light beam can be controlled. In actual use, the inner wall of the funnel-shaped structure of the upper half can be sanded to make the surface rough. Therefore, when the laser irradiates on the rough surface, it will be diffusely reflected, avoiding the laser returning to the original path and causing damage to the laser generator 1.

[0026] In addition, when the laser irradiates on the diaphragm 15, the temperature of the diaphragm 15 will rise. In order to avoid damage to the diaphragm 15, a heat dissipation pipe 11 is arranged in the installation cylinder 6 and surrounds the installation hole 8, and the two ends of the heat dissipation pipe 11 extend out of the installation hole 8. If cold water flows through the heat dissipation pipe 11, the temperature of the diaphragm 15 can be reduced, prolonging the service life of the diaphragm 15.

[0027] The lower installation plate 4 is located at the bottom of the installation cylinder 6. In order to facilitate the connection between the installation cylinder 6 and the lower installation plate 4, a positioning ring 12 is integrally formed on the lower installation plate 4. The lower end of the installation cylinder 6 is integrally arranged outside the positioning ring 12 during installation, facilitating the positioning of the installation cylinder 6.

[0028] The positioning ring 12 is provided with a dust collection groove 13. The lower end surface of the lower installation plate 4 is provided with a dust cover 14 of a magnetic type.

[0029] The placing direction from top to bottom in the embodiment is laser generator 1, upper mounting plate 3, mounting cylinder 6 and lower mounting plate 4 in sequence. Therefore, the use environment position, it is necessary to detect when setting is inverted, namely laser generator 1 is in the lowermost position. The mounting plate 2, mounting cylinder 6 are all provided with laser passing holes in the middle. If dust falls into laser generator 1, it can affect the laser output power, and even can damage the laser generator 1 element. Therefore, the dust cover 14 can be covered when not in use. Dust is blocked through the dust cover 14. In addition, the cross section of the dust collection groove 13 is V-shaped instead of smooth slope when inverted, which can retain dust and prevent dust from directly falling onto the laser generator 1 along the slope.

[0030] The implementation process and principle of the laser detection equipment based on the carbon dot fluorescence characteristics in the embodiment of the application are as follows:

[0031] When in use, diaphragm 15 and gasket 10 are installed in mounting hole 8, and then mounting cylinder 6 is fixed with upper mounting plate 4 and lower mounting plate 4 through bolts.

[0032] When in use, the device can also be fixed with a conveying device, and then the carbon dot carrying receptor is conveyed to the lower part of laser generator 1 by using the conveying device to be irradiated by laser. The carbon dot can emit fluorescence of a specific wavelength when irradiated by laser. By detecting the fluorescence signal, the optical properties and concentration of the carbon dot can be analyzed.

[0033] When in use, the temperature of diaphragm 15 will rise, and the temperature of diaphragm 15 can be reduced through the continuously flowing heat dissipation liquid in heat dissipation pipe 11. Diaphragm 15 is prevented from being damaged due to high temperature. When diaphragm 15 needs to be replaced, upper mounting plate 3 and mounting cylinder 6 need to be separated, and then diaphragm 15 can be taken out and replaced.

[0034] The above embodiment is only a preferred embodiment of the present application, and cannot be used to limit the scope of protection of the present application. Any non-substantial change and replacement made by those skilled in the art on the basis of the present application all belong to the scope of protection required by the present application.

Claims

1. A laser detection device based on the fluorescence characteristics of carbon dots, comprising a laser generator, characterized in that, Also include: The mounting plate comprises an upper mounting plate and a lower mounting plate, and a light transmission hole is formed in the middle of the mounting plate, and the upper end of the upper mounting plate is connected with the laser generator; The mounting cylinder is arranged between the upper mounting plate and the lower mounting plate; The diaphragm is movably installed in the mounting cylinder, and the inside of the mounting cylinder and the outside of the diaphragm are surrounded by the heat dissipation pipe.

2. The laser detection device based on the fluorescence characteristics of carbon dots according to claim 1, characterized in that, The upper and lower ends of the mounting cylinder are fixedly connected with the connecting flanges, the mounting cylinder is bolted with the mounting plate through the connecting flanges, the mounting hole is formed in the inside of the mounting cylinder, the heat dissipation pipe surrounds the outside of the mounting hole, and the two ends of the heat dissipation pipe extend out of the mounting cylinder.

3. The laser detection device based on the fluorescence characteristics of carbon dots according to claim 2, characterized in that, A limiting ring is further arranged on the inner wall of the mounting hole, the diaphragm is installed in the mounting hole, and the lower end of the diaphragm is in contact with the limiting ring.

4. The laser detection device based on the fluorescence characteristics of carbon dots according to claim 3, characterized in that, A gasket is further arranged in the mounting hole and at the upper end of the diaphragm.

5. The laser detection device based on the fluorescence characteristics of carbon dots according to claim 1, characterized in that, The upper end surface of the lower mounting plate is provided with a positioning ring, and the mounting cylinder is arranged outside the positioning ring.

6. The laser detection device based on the fluorescence characteristics of carbon dots according to claim 5, characterized in that, A dust collection groove is arranged on the positioning ring.

7. The laser detection device based on the fluorescence characteristics of carbon dots according to claim 1, characterized in that, A magnetic dust cover is further arranged on the bottom of the lower mounting plate.

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