Pulse laser reflector path concentric adjusting device

Abstract

The utility model discloses a pulse laser reflector path concentric adjusting device which is used for adjusting a pulse laser reflector path. Comprising a light source, a plurality of groups of dimming lens assemblies, a plurality of groups of cameras, a display screen, and a total reflection lens, a laser cavity, a semi-reflection lens, a light path adjusting lens assembly, an optical fiber coupler, an optical fiber and a laser light emitting terminal which are sequentially arranged along the light path direction of the light source, the dimming lens assemblies are distributed between the total reflection lens and the laser cavity, between the laser cavity and the half reflection lens and between the optical path adjusting lens assembly and the optical fiber coupler. Each camera points to the corresponding dimming lens assembly, and each camera is electrically connected with the display screen. The device greatly prolongs the time for adjusting the concentricity of the light path, can adjust while observing, is convenient to implement, and is convenient for subsequent problem tracing.

Description

Technical Field

[0001] This utility model relates to the concentric adjustment of pulsed lasers, specifically to a concentric adjustment device for the external optical path of a pulsed laser. Background Technology

[0002] When concentrically adjusting the external optical path of a pulsed laser, the current method is as follows: a reference block is set at a key position in the external optical path. For the main optical path, the laser beam is observed by the human eye to see if it passes through the small hole on the reference block, and the reflected red light on the red light source is observed by the human eye to see if it coincides with the incident red light. For the beam splitting path, the laser beam is observed by the fiber optic coupling observation mirror and the reference block to see if it is fully coupled into the fiber and if it is located in the center position.

[0003] Currently, the concentric adjustment method for the external optical path of pulsed lasers has the following problems: 1) Due to the small aperture of the reference block, the human eye sometimes cannot accurately judge whether the red light has shifted, and the observation time is long, resulting in a long adjustment time for the optical path; 2) Due to the structure of some devices blocking part of the line of sight, it is difficult to adjust and observe the effect at the same time when aligning the main optical path; 3) When using a fiber optic coupler for observation, the observer and other personnel cannot observe the red light adjustment at the same time, and back-and-forth operation is required, which is inconvenient; 4) The external optical path can only be viewed in real time, which is not conducive to tracing the source of problems later. Utility Model Content

[0004] The purpose of this invention is to provide a concentric adjustment device for the external optical path of a pulsed laser, which greatly improves the time for adjusting the concentricity of the optical path, allows for simultaneous observation and adjustment, is easy to implement, and facilitates subsequent problem tracing.

[0005] The technical solution adopted in this utility model is:

[0006] A concentric adjustment device for the external optical path of a pulsed laser, used to adjust the external optical path of a pulsed laser, is characterized by comprising a light source, multiple sets of dimming lens assemblies, multiple sets of cameras, a display screen, and a total reflection mirror, a laser cavity, a semi-reflecting mirror, an optical path adjustment lens assembly, an optical fiber coupler, an optical fiber, and a laser light output terminal arranged sequentially along the optical path direction of the light source; the dimming lens assemblies are distributed between the total reflection mirror and the laser cavity, between the laser cavity and the semi-reflecting mirror, and between the optical path adjustment lens assembly and the optical fiber coupler; each camera points to its corresponding dimming lens assembly, and each camera is electrically connected to the display screen.

[0007] Preferably, the dimming lens assembly includes:

[0008] The first dimming plate allows light to pass through;

[0009] The second dimming plate is located downstream of the first dimming plate and is used for fine-tuning the optical path.

[0010] Furthermore, the second dimming board is provided with a reference hole for the light path to pass through.

[0011] Preferably, it further includes a first adjustment mechanism, which is electrically connected to the display screen via a controller, and the dimming lens assembly is mounted on the first adjustment mechanism.

[0012] Preferably, the system further includes a second adjustment mechanism, on which the camera is mounted, and the second adjustment mechanism uses a magnetic base.

[0013] Preferably, the optical path adjustment lens assembly includes multiple sets of angle-reflecting lenses, and a dimming lens assembly is provided between each set of angle-reflecting lenses.

[0014] Furthermore, the angled total reflection mirror is provided in two sets. When the light path hits one of the angled total reflection mirrors, the light path is reflected to the other angled total reflection mirror, and then the light path is reflected to the fiber optic coupler.

[0015] Furthermore, both sets of angled total reflection lenses are 45° total reflection lenses.

[0016] Preferably, the camera includes a camera body and a variable focal length lens, the variable focal length lens being detachably connected to the camera body.

[0017] Furthermore, it also includes a lighting lamp, which is positioned near the observation area of ​​the camera to increase the brightness of the observation area.

[0018] The beneficial effects of this utility model are:

[0019] During operation, the camera can clearly observe the end faces of each dimming lens assembly. In this way, the position information of the laser beam at key positions can be displayed on the screen in real time and clearly. The staff can quickly know its offset, which facilitates timely adjustment of the dimming lens assembly and greatly improves the time for adjusting the optical path concentricity. There is no obstruction of view at each key position, and adjustments can be made while observing. The observation of the fiber optic coupler is eliminated, making implementation convenient. The saved images can also facilitate subsequent problem tracing. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the operation of the concentric adjustment device for the external optical path of the pulsed laser in Embodiment 1 of this utility model. The solid lines between the optical components represent the laser's optical path, the dashed lines emitted by each camera represent its observation direction, and the dotted lines between the camera, display, adjustment mechanism, and controller represent electrical connections.

[0021] Figure 2 This is a schematic diagram of the operation of the concentric adjustment device for the external optical path of the pulsed laser in Embodiment 2 of this utility model. The solid lines between the optical components represent the laser's optical path, the dashed lines emitted by each camera represent their observation direction, and the dotted lines between the display and each camera represent electrical connections.

[0022] In the diagram: 1-Light source; 2-Total reflection mirror; 3-Laser cavity; 4-Half reflection mirror; 5-Angle total reflection mirror; 6-Fiber optic coupler; 7-Fiber optic cable; 8-Laser output terminal; 9-Dimming mirror assembly; 10-Camera; 11-Display screen; 12-Lighting lamp; 13-Second adjustment mechanism; 14-First adjustment mechanism; 15-Controller. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0024] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0025] The features and performance of this application will be further described in detail below with reference to the embodiments.

[0026] Example 1

[0027] This embodiment discloses a concentric adjustment device for the external optical path of a pulsed laser, used to adjust the external optical path of a pulsed laser, such as... Figure 1 As shown, it includes a light source 1, multiple dimming lens assemblies 9, multiple cameras 10, a display screen 11, and, sequentially arranged along the optical path of the light source, a total reflection mirror 2, a laser cavity 3, a semi-reflecting mirror 4, an optical path adjustment lens assembly, an optical fiber coupler 6, an optical fiber 7, and a laser light output terminal 8; wherein:

[0028] The dimming lens assembly 9 is distributed between the total reflection mirror 2 and the laser cavity 3, between the laser cavity 3 and the semi-reflection mirror 4, and between the optical path adjustment lens assembly and the fiber coupler 6, as shown in [reference]. Figure 1 ;

[0029] Each camera points to its corresponding dimming lens assembly, and each camera is electrically connected to the display screen. (See...) Figure 1 .

[0030] During operation, the camera 10 can clearly observe the end faces of each dimming lens assembly 9. In this way, the position information of the laser beam at key positions can be displayed on the display screen 11 in real time and clearly in the form of images. The staff can quickly know its offset, which facilitates timely adjustment of the dimming lens assembly 9 and greatly improves the time for adjusting the optical path concentricity. There is no obstruction of view at each key position, and adjustments can be made while observing. The observation of the fiber optic coupler is eliminated, which is convenient for implementation. The saved images can also facilitate the traceability of subsequent problems.

[0031] Regarding the distribution of the adjustment lens assembly 9: it can be placed at key positions on the external optical path, and its specific position is designed according to the specific external optical path of each pulse laser and is not limited; in this embodiment, a 550 pulse laser is used, and the adjustment lens assembly 9 is arranged according to the external optical path of the 550 pulse laser. In fact, this concentric adjustment device is suitable for various types of pulse lasers and is not limited to a certain wavelength or a certain external optical path design.

[0032] Regarding the structure of the dimming lens assembly 9, preferably: the dimming lens assembly 9 includes a first dimming plate and a second dimming plate. The first dimming plate allows the light path to pass through, and the second dimming plate is located downstream of the first dimming plate for fine-tuning the light path. The second dimming plate has a reference hole for the light path to pass through. Only when the spot of the laser beam on the second dimming plate passes exactly through the center of the reference hole and the halo outline is clear can it be said that this segment of the light path is collimated. For example, when the dimming lens assembly 9 is located between the total reflection mirror 2 and the laser cavity 3, since the total reflection mirror 2 is located upstream of the laser cavity 3, the first dimming plate is located close to the total reflection mirror 2, and the second dimming plate is located close to the laser cavity 3. Specifically, the function of the first dimming plate is to allow light to pass through quickly, and the second dimming plate is used for fine-tuning the light path. After the light path passes through the reference hole of the first dimming plate, it will diverge. When it passes through the reference hole of the second dimming plate, the second dimming plate is adjusted to make the halo outline clear, indicating that this segment of the light path is collimated.

[0033] Regarding the adjustment of the dimming lens assembly 9, preferably: as follows: Figure 1 As shown, in this embodiment, the device further includes a first adjustment mechanism 14, which is electrically connected to the display screen 11 via a controller 15, and the dimming lens assembly 9 is mounted on the first adjustment mechanism 14.

[0034] The first adjustment mechanism 14 is used to adjust the position of the dimming lens assembly 9. It is a common mechanism in the field. It is generally used to adjust the displacement, tilt angle, etc. of the dimming lens assembly 9. The movable part used for adjustment is generally an adjustment screw, and sometimes a push block or other components are used. When manual drive is used, the movable part can be operated directly. When electric drive is used, the movable part can be connected to the motor and the motor can be used to drive the movable part to move.

[0035] Regarding the operation of the first adjustment mechanism 14: In this embodiment, the position information of the optical path on the dimming lens assembly 9 captured by the camera 10 is transmitted to the display screen 11. The operator can manually adjust the dimming lens assembly 9 based on the optical path position information displayed on the display screen 11. Alternatively, control commands can be input to the controller 15 to semi-automatically control the first adjustment mechanism 14 to adjust the position or deflection angle of the adjustment lens assembly 9. According to some embodiments, image processing software can be preset within the controller 15. The image processing software automatically identifies the offset of the laser beam in the image and controls the first adjustment mechanism 14 to adjust the position or deflection angle of the adjustment lens assembly 9 in real time.

[0036] Regarding the installation of camera 10, preferably: as follows: Figure 1 As shown, in this embodiment, the device further includes a second adjustment mechanism 13, on which the camera 10 is mounted. The second adjustment mechanism 13 uses a magnetic base. Thus, the second adjustment mechanism 13 can be mounted at any position on the table via the magnetic base, and the camera 10 can be adjusted on the second adjustment mechanism 13 to provide a good viewing angle.

[0037] Regarding the selection of camera 10, preferably: in this embodiment, camera 10 includes a camera body and a variable focal length lens, the variable focal length lens being detachably connected to the camera body, which can capture clearer images.

[0038] Regarding the optical path adjustment lens assembly, preferably: such as Figure 1 As shown, in this embodiment, the optical path adjustment lens assembly includes multiple sets of angle total reflection lenses 5, and a dimming lens assembly 9 is provided between each set of angle total reflection lenses 5; there are two sets of angle total reflection lenses 5. When the optical path hits one of the angle total reflection lenses 5, the optical path is reflected to the other angle total reflection lens 5, and then the optical path is reflected to the fiber optic coupler 6; in this embodiment, both sets of angle total reflection lenses 5 are 45° total reflection lenses. Two sets of 45° total reflection lenses are used to change the propagation direction of the laser to save space.

[0039] To improve the brightness of the observation area and make the acquired image clearer, such as... Figure 1As shown, preferably, each camera 10 has a light source 12 near its observation area, and in order to avoid shadow effects, the light source 12 is preferably an LED ring light.

[0040] It is worth noting that, finally, the fiber optic end-face viewing lens should be used to observe whether all the red light has been coupled into the fiber. Specifically, when the light path to be tested enters the fiber optic coupler, the focal length of the fiber optic coupler is adjusted to focus the light onto the end face of the fiber. Then, the fiber optic end-face knob is finely adjusted so that the red light spot is located at the center of the fiber end face, ultimately ensuring that the light path reaches the laser output terminal.

[0041] Example 2

[0042] This embodiment also discloses a concentric adjustment device for the external optical path of a pulsed laser, such as... Figure 2 As shown, the main differences between this and Embodiment 1 are: 1) Two observation areas have been added, namely the front end of the light source 1 and the front end of the fiber optic coupler 6, and cameras 10 corresponding to the two have been configured; 2) The controller 15 has been removed, and personnel manually operate the first adjustment mechanism 14 according to the content on the display screen 11.

[0043] In Embodiment 1 and Embodiment 2, in order to improve the human-computer interaction function, the display screen 11 is preferably a touch display screen.

[0044] The embodiments described above are some, but not all, of the embodiments of this application. The detailed description of the embodiments of this application is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

Claims

1. A pulse laser external optical path concentricity adjustment device, used for adjusting the pulse laser external optical path, characterized in that: It includes a light source, multiple groups of dimming lens components, multiple groups of cameras, a display screen, and a total reflection lens, a laser cavity, a semi-reflective lens, an optical path adjustment lens component, a fiber coupler, an optical fiber, and a laser light output terminal arranged in sequence along the optical path direction of the light source; the dimming lens components are distributed between the total reflection lens and the laser cavity, between the laser cavity and the semi-reflective lens, and between the optical path adjustment lens component and the fiber coupler; each of the cameras points to the corresponding dimming lens component, and each of the cameras is electrically connected to the display screen.

2. The pulse laser external optical path concentricity adjustment device according to claim 1, characterized in that: The dimming lens assembly comprises: A first dimming plate, for light to pass through; The second dimming plate is arranged downstream of the first dimming plate and is used for fine-tuning the light path.

3. The pulse laser external optical path concentricity adjustment device as claimed in claim 2, characterized in that: The first dimming plate and the second dimming plate are both provided with reference holes for light paths to pass through.

4. The pulse laser external optical path concentricity adjustment device as claimed in claim 1, characterized in that: It also includes a first adjustment mechanism, which is electrically connected to the display screen through a controller, and the dimming lens assembly is installed on the first adjustment mechanism.

5. The pulse laser external optical path concentricity adjustment device as claimed in claim 1, characterized in that: It also includes a second adjustment mechanism, the camera is installed on the second adjustment mechanism, and the second adjustment mechanism adopts a magnetic base.

6. The pulse laser external optical path concentricity adjustment device according to any one of claims 1 to 4, characterized in that: The optical path adjustment lens assembly comprises a plurality of groups of angle-reflecting lenses, and dimming lens assemblies are arranged between the plurality of groups of angle-reflecting lenses.

7. The pulse laser external optical path concentricity adjustment device as claimed in claim 6, characterized in that: The angle total reflection lenses are provided with two groups. When the light path is incident on one of the angle total reflection lenses, the light path is then reflected to the other angle total reflection lens, and then the light path is reflected to the optical fiber coupler.

8. The pulse laser external optical path concentricity adjustment device as claimed in claim 7, characterized in that: Both sets of angled fully reflective lenses are 45° fully reflective lenses.

9. The pulse laser external optical path concentricity adjustment device as claimed in claim 1, characterized in that: The camera comprises a camera body and a focal length variable lens, wherein the focal length variable lens is detachably connected to the camera body.

10. The pulse laser external optical path concentricity adjustment device according to claim 1 or 9, characterized in that: It also includes a lighting lamp, which is arranged near the observation area of ​​the camera and is used to increase the brightness of the observation area.

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