A particle illuminating device

Abstract

The present invention discloses a particle illumination device, comprising: a fiber laser, the fiber laser is used to emit a light beam; a fiber collimator, the fiber collimator is used to correct the light beam; a three-axis electric slide mechanism, the fiber collimator is installed on the three-axis electric slide mechanism, the three-axis electric slide mechanism is used to move the position of the fiber collimator relative to the particle; a fiber coupler, the fiber coupler is used for light beam transmission between the fiber laser and the fiber collimator; the fiber laser can emit multiple light beams, and finally emit multiple light beams through the fiber coupler and the fiber collimator. The particle position illumination and following can be achieved.

Description

Technical Field

[0001] The invention relates to the field of particles, and in particular to a particle lighting device. Background Art

[0002] The traditional method of illuminating particles is to illuminate the entire area. The specific principle is: use a beam of LED strip light source (650nm) to directly illuminate the entire movement area of ​​the particle, so as to observe and control the particle. However, the existing technology has the following defects:

[0003] 1. The LED light source is severely scattered, and the consistency between the light source and the light spot is poor, resulting in poor image quality when viewing particles with a camera, affecting the viewing effect;

[0004] 2. The entire particle motion area is illuminated at the same time, which can easily misidentify other impurities (such as dust and other particles) as target particles, interfering with observation and making the target particles not well bound;

[0005] 3. Traditional technology cannot realize the illumination and control of a single particle. The illumination and control of a single particle is poor and the function is single. Summary of the invention

[0006] In order to overcome the deficiencies of the prior art, an object of the present invention is to provide a particle illuminating device to solve the defects mentioned in the background art.

[0007] The purpose of the present invention is achieved by the following technical solutions:

[0008] A particle illuminating device, comprising:

[0009] A fiber laser, wherein the fiber laser is used to emit a light beam;

[0010] A fiber collimator, which is used to correct the light beam;

[0011] A three-axis electric slide mechanism, the optical fiber collimator is mounted on the three-axis electric slide mechanism, and the three-axis electric slide mechanism is used to move the position of the optical fiber collimator relative to the particle;

[0012] A fiber coupler, which is used for light beam transmission between a fiber laser and a fiber collimator;

[0013] The fiber laser can emit multiple light beams, which are finally emitted through the fiber coupler and the fiber collimator.

[0014] Furthermore, the output end of the fiber laser is connected to the input end of the fiber coupler, and the output end of the fiber coupler is connected to the input end of the fiber collimator.

[0015] Furthermore, it also includes an image recognition mechanism and a controller, wherein the image recognition mechanism is used to obtain the position information of the particles and feed back the obtained position information of the particles to the controller, and the controller drives the three-axis electric slide mechanism to move according to the fed-back position information of the particles so that the light beam emitted by the fiber optic collimator illuminates the particles at that position, and the three-axis electric slide mechanism and the image recognition mechanism are respectively connected to the controller.

[0016] Furthermore, the three-axis electric slide mechanism includes a base plate, an electric Y-axis moving mechanism is fixed on the base plate, an electric X-axis moving mechanism is fixed on the electric Y-axis moving mechanism, a connecting piece is fixed on the electric X-axis moving mechanism, the connecting piece is connected to an electric Z-axis moving mechanism, a collimator fixture for mounting the optical fiber collimator, an X-axis slide, a Y-axis slide and a Z-axis slide are fixed on the Z-axis moving mechanism, the X-axis moving mechanism, the electric Y-axis moving mechanism and the electric Z-axis moving mechanism are respectively connected to a stepper motor, and the three stepper motors are respectively electrically connected to the controller.

[0017] Furthermore, the collimator fixture includes an upper fixed block and a lower fixed block, the lower fixed block is connected to the electric Z-axis moving mechanism, a clamping channel for clamping the optical fiber collimator is formed between the upper fixed block and the lower fixed block, and the clamping channel passes through the collimator fixture.

[0018] Furthermore, a lower groove is provided on the upper surface of the lower fixing block, and an upper groove is provided on the lower surface of the upper fixing block at a position corresponding to the lower groove, and the upper groove cooperates with the lower groove to form the clamping channel.

[0019] Furthermore, the clamping channels are provided in plurality, and two adjacent clamping channels have an included angle.

[0020] Furthermore, there are 8 fiber collimators, the output end of the fiber laser is provided with 8 fiber interfaces, and the output end of the fiber coupler is connected to the corresponding 8 fiber collimators respectively by connecting 8 optical fibers.

[0021] Furthermore, the wavelength of the laser emitted by the fiber laser is 650 nm.

[0022] Furthermore, the image recognition mechanism comprises a CCD camera, the lens of the CCD camera is aimed at the moving area of ​​the particle and photographs the particle to obtain the position information of the particle.

[0023] Compared with the prior art, the beneficial effects of the present invention are as follows: in the present invention, multiple light beams emitted by the fiber laser are emitted through the fiber coupler and the fiber collimator to illuminate the particles. Since the fiber collimator is position-controlled and moved through a three-axis electric slide mechanism, so that the light beam emitted by the fiber collimator illuminates the particles at that position, real-time tracking of particle movement and illumination can be achieved, and illumination of a single particle can be achieved, with good controllability; laser is used to illuminate the particles, and the laser has the characteristics of good monochromaticity, strong directionality, high brightness, good coherence, etc., which is beneficial to improving the illumination effect of the particles and solves the defects of severe scattering and poor quality of viewing the particle picture in traditional LED light source irradiation; the light beam is emitted through the fiber collimator to obtain a collimated laser beam, which is beneficial to improving the effect of illuminating the particles. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 A schematic diagram of a particle lighting device provided by the present invention;

[0025] Figure 2 An exploded view of a collimator fixture of a particle illumination device provided by the present invention;

[0026] In the figure: 1. fiber laser; 2. fiber coupler; 3. fiber collimator; 4. three-axis electric slide mechanism; 40. base plate; 41. electric Y-axis moving mechanism; 42. electric X-axis moving mechanism; 43. connector; 44. electric Z-axis moving mechanism; 45. collimator fixture; 451. upper fixing block; 4510. upper groove; 452. lower fixing block; 4520. lower groove; 453. clamping channel. DETAILED DESCRIPTION

[0027] The present invention is further described below in conjunction with the accompanying drawings and specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form a new embodiment.

[0028] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "horizontal", "vertical", "top", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first", "second", "one", "another" and the like are used to distinguish similar elements, and these terms and other similar terms are not intended to limit the scope of the present invention.

[0029] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be internally connected between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. In each of the drawings, the same or corresponding elements are marked with corresponding figure numbers (for example, the elements marked with "1XX" and "2XX" have the same structure and similar functions).

[0030] like Figure 1-2 As shown, the present invention provides a particle lighting device, comprising:

[0031] A fiber laser 1, wherein the fiber laser 1 is used to emit a light beam;

[0032] An optical fiber collimator 3, wherein the optical fiber collimator 3 is used to correct the light beam;

[0033] A three-axis electric slide mechanism 4, on which the optical fiber collimator 3 is mounted, and the three-axis electric slide mechanism 4 is used to move the position of the optical fiber collimator 3 relative to the particle;

[0034] A fiber coupler 2, wherein the fiber coupler 2 is used for light beam transmission between the fiber laser 1 and the fiber collimator 3;

[0035] The fiber laser 1 can emit multiple light beams, which are finally emitted through the fiber coupler 2 and the fiber collimator 3 .

[0036] In the present invention, multiple beams of light emitted by the fiber laser 1 are emitted through the fiber coupler 2 and the fiber collimator 3 to illuminate the particles. Since the fiber collimator 3 is position-controlled and moved through the three-axis electric slide mechanism 4, the light beam emitted by the fiber collimator 3 can illuminate the particles at that position, so that the real-time follow-up of the moving particles and the illumination of a single particle can be realized, and the controllability is good; laser is used to illuminate the particles, and the laser has the characteristics of good monochromaticity, strong directionality, high brightness, good coherence, etc., which is conducive to improving the illumination effect of the particles and solves the defects of serious scattering and poor quality of viewing the particle picture in the traditional LED light source irradiation. The light beam is emitted through the fiber collimator 3, and a collimated laser beam can be obtained, which is convenient for illuminating the particles.

[0037] As a preferred embodiment, the output end of the fiber laser 1 is connected to the input end of the fiber coupler 2 , and the output end of the fiber coupler 2 is connected to the input end of the fiber collimator 3 .

[0038] As a preferred embodiment, it also includes an image recognition mechanism and a controller, wherein the image recognition mechanism is used to obtain the position information of the particles and feed the obtained position information of the particles back to the controller, and the controller drives the three-axis electric slide mechanism 4 to move according to the fed-back position information of the particles, so that the light beam emitted by the optical fiber collimator 3 illuminates the particles at that position, and the three-axis electric slide mechanism 4 and the image recognition mechanism are respectively connected to the controller.

[0039] The particles (SIC, 5-10 μm in diameter) of the present invention move in a specific area. The particles in the area are first photographed by an image recognition mechanism to obtain the position information of the particles, and the position information of the particles is fed back to the controller. The controller controls the three-axis electric slide mechanism 4 to move according to the received particle position information, so that the light beam emitted by the fiber collimator 3 illuminates the particles at this position, and the real-time follow-up of the particle movement and illumination is realized. The three-axis electric slide mechanism 4, the image recognition mechanism and the controller cooperate with each other to realize full closed-loop real-time motion control; because the emitted light beam is controlled accordingly by the three-axis electric slide mechanism 4, the controllability of the illumination of a single particle is greatly improved. The present invention can independently operate the illumination of a single particle and provide a consistent backlight to the image recognition mechanism, which is convenient for the image recognition mechanism to observe and shoot.

[0040] As a preferred embodiment, the three-axis electric slide mechanism 4 includes a base plate 40, an electric Y-axis moving mechanism 41 is fixed on the base plate 40, an electric X-axis moving mechanism 42 is fixed on the electric Y-axis moving mechanism 41, a connector 43 is fixed on the electric X-axis moving mechanism, the connector 43 is connected to an electric Z-axis moving mechanism 44, a collimator fixture 45 for mounting the optical fiber collimator 3 is fixed on the Z-axis moving mechanism, an X-axis slide, a Y-axis slide and a Z-axis slide, the X-axis moving mechanism, the electric Y-axis moving mechanism 41, and the electric Z-axis moving mechanism 44 are respectively connected to a stepper motor, and the three stepper motors are respectively electrically connected to the controller. The X-axis moving mechanism, the electric Y-axis moving mechanism 41, and the electric Z-axis moving mechanism 44 are driven by stepper motors, respectively, and the stepper motors can achieve fast and accurate positioning, with high displacement accuracy, and the overall motion accuracy is ≤0.01mm. The X-axis moving mechanism, the electric Y-axis moving mechanism 41, and the electric Z-axis moving mechanism 44 described in this embodiment are all prior art.

[0041] As a preferred embodiment, the collimator fixture 45 includes an upper fixing block 451 and a lower fixing block 452. The lower fixing block 452 is connected to the electric Z-axis moving mechanism 44. A clamping channel 453 for clamping the fiber collimator 3 is formed between the upper fixing block 451 and the lower fixing block 452, and the clamping channel 453 penetrates the collimator fixture 45. In this embodiment, the fiber collimator 3 is clamped and fixed by the clamping channel 453, which is convenient for installation and disassembly. In this embodiment, the upper fixing block 451 and the lower fixing block 452 are connected by threaded fasteners. This facilitates the installation and replacement of the fiber collimator 3. The threaded fasteners in this embodiment can be screws, bolts, etc.

[0042] As a preferred embodiment, a lower groove 4520 is provided on the upper surface of the lower fixing block 452, and an upper groove 4510 corresponding to the position of the lower groove 4520 is provided on the lower surface of the upper fixing block 451. The upper groove 4510 and the lower groove 4520 cooperate to form the clamping channel 453. It has the characteristics of simple structure and low installation cost.

[0043] As a preferred embodiment, a plurality of clamping channels 453 are provided, and an included angle is formed between two adjacent clamping channels 453. In this way, a plurality of fiber collimators 3 can be installed, which is beneficial to improving the accuracy and illumination range of illuminating particles.

[0044] As a preferred embodiment, there are 8 fiber collimators 3, 8 fiber interfaces are provided at the output end of the fiber laser 1, and the output end of the fiber coupler 2 is connected to 8 fibers respectively, which are connected to the corresponding 8 fiber collimators 3. Of course, the number of fiber collimators 3 can also be 9, 10, and the number of fiber collimators 3 is designed according to the actual situation.

[0045] As a preferred embodiment, the laser wavelength emitted by the fiber laser 1 is 650 nm. Specifically, a main fiber with a wavelength of 650 nm is connected to the input end of the fiber laser 1 in this embodiment.

[0046] As a preferred embodiment, the image recognition mechanism includes a CCD camera. The lens of the CCD camera is aligned with the movement area of the particles and photographs the particles to obtain the position information of the particles.

[0047] The above embodiments are only the preferred embodiments of the present invention and cannot be used to limit the scope of protection of the present invention. Any non-substantial changes and substitutions made by those skilled in the art based on the present invention belong to the scope of protection required by the present invention.

Claims

1. A lighting device for particles, characterized in that, comprising: a fiber laser (1) for emitting a light beam; a fiber collimator (3) for correcting the light beam; a three-axis electric slide table mechanism (4), the fiber collimator (3) is mounted on the three-axis electric slide table mechanism (4), and the three-axis electric slide table mechanism (4) is used to move the position of the fiber collimator (3) relative to the particles; a fiber coupler (2) for beam transmission between the fiber laser (1) and the fiber collimator (3); the fiber laser (1) can emit multiple light beams, which are finally emitted through the fiber coupler (2) and the fiber collimator (3); and an image recognition mechanism and a controller, the image recognition mechanism is used to obtain the position information of the particles and feedback the obtained position information of the particles to the controller, and the controller drives the three-axis electric slide table mechanism (4) to move according to the feedback position information of the particles, so that the light beam emitted by the fiber collimator (3) illuminates the particles at this position, and the three-axis electric slide table mechanism (4) and the image recognition mechanism are respectively connected to the controller.

2. The lighting device for particles according to claim 1, characterized in that, the output end of the fiber laser (1) is connected to the input end of the fiber coupler (2), and the output end of the fiber coupler (2) is connected to the input end of the fiber collimator (3).

3. The lighting device for particles according to claim 1, characterized in that, the three-axis electric slide table mechanism (4) includes a bottom plate (40), an electric Y-axis moving mechanism (41) is fixed on the bottom plate (40), an electric X-axis moving mechanism (42) is fixed on the electric Y-axis moving mechanism (41), a connecting member (43) is fixed on the electric X-axis moving mechanism (42), the connecting member (43) is connected to an electric Z-axis moving mechanism (44), and a collimator clamp (45) for mounting the fiber collimator (3) is fixed on the Z-axis moving mechanism, an X-axis slide, a Y-axis slide and a Z-axis slide, the X-axis moving mechanism, the electric Y-axis moving mechanism (41), and the electric Z-axis moving mechanism (44) are respectively connected to a stepping motor, and the three stepping motors are respectively electrically connected to the controller.

4. The lighting device for particles according to claim 3, characterized in that, the collimator clamp (45) includes an upper fixing block (451) and a lower fixing block (452), the lower fixing block (452) is connected to the electric Z-axis moving mechanism (44), and a clamping channel (453) for clamping the fiber collimator (3) is formed between the upper fixing block (451) and the lower fixing block (452), and the clamping channel (453) penetrates through the collimator clamp (45).

5. The lighting device for particles according to claim 4, characterized in that, A lower groove (4520) is provided on the upper surface of the lower fixing block (452), and an upper groove (4510) is provided on the lower surface of the upper fixing block (451) at a position corresponding to the lower groove (4520), and the upper groove (4510) cooperates with the lower groove (4520) to form the clamping channel (453).

6. The particle illuminating device according to claim 4, It is characterized in that A plurality of the clamping channels (453) are provided, and two adjacent clamping channels (453) have an included angle.

7. The particle illuminating device according to claim 2, It is characterized in that The optical fiber collimators (3) are provided in eight numbers, the output end of the optical fiber laser (1) is provided with eight optical fiber interfaces, and the output end of the optical fiber coupler (2) is connected to the eight corresponding optical fibers and respectively connected to the eight optical fiber collimators (3).

8. The particle illuminating device according to claim 1, It is characterized in that The laser wavelength emitted by the optical fiber laser (1) is 650 nm.

9. The particle illuminating device according to claim 1, It is characterized in that The image recognition mechanism comprises a CCD camera, the lens of the CCD camera is aimed at the moving area of ​​the particles and photographs the particles to obtain the position information of the particles.

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