Device for changing optical path of laser

Abstract

The utility model discloses a device for changing an optical path of a laser. The device comprises a laser; the galvanometer is arranged on a laser light path emitted by the laser; the FC optical fiber interface assembly and the laser are both located on the same side of the galvanometer, a first reflecting surface of the galvanometer reflects laser emitted by the laser and enters the FC optical fiber interface assembly, and the FC optical fiber interface assembly is fixedly connected with the optical fiber head; the laser light source and the displacement sensor are arranged on the other side of the galvanometer, the second reflecting surface of the galvanometer reflects the laser emitted by the laser light source into the displacement sensor, and the laser emitted into the FC optical fiber interface assembly is calibrated through the displacement sensor. The multiple FC optical fiber interface assemblies are arranged at different positions, and through periodic deflection of the galvanometer, the laser beams are reflected by the first reflection face of the galvanometer and then enter the multiple FC optical fiber interface assemblies. The device not only can change the direction of laser output by the laser, but also can enable the laser to enter the optical fiber heads at different positions.

Description

Technical Field

[0001] This utility model relates to the field of lasers. More specifically, this utility model relates to a device for changing the optical path of a laser. Background Technology

[0002] Currently, fiber lasers are widely used due to their high power, high stability, and good beam quality, and can meet the diverse needs of different fields. They have important applications in industrial processing, communications, medical care, scientific research, and military fields.

[0003] Fiber lasers, as advanced laser generating devices, utilize optical fibers as a unique amplification medium in their core operation. Inside the fiber, energy is injected through a pump source, causing population inversion of the rare-earth ions and other gain media doped within the fiber, thus generating stimulated emission and forming a laser beam. The laser output direction is strictly along the fiber axis; this inherent characteristic determines its singular laser beam emission direction, making it difficult to flexibly change direction like some other types of lasers.

[0004] In many industrial processing scenarios, this invariable orientation presents significant limitations. Take modern large-scale industrial production lines as an example: multiple production lines arranged in different directions often operate in parallel. In metal cutting, workpieces may be transported along production lines with different orientations, ready for cutting. However, because fiber lasers can only generate laser beams in a fixed direction, a single laser can only process workpieces from one specific production line at a time. This means that to process workpieces from multiple production lines, either frequent laser position adjustments or the use of multiple lasers with different orientations are necessary. Either approach is not only cumbersome but also significantly reduces production efficiency and increases costs, failing to meet the demands of industrial production for efficient and flexible processing. Utility Model Content

[0005] This invention provides a device for changing the optical path of a laser, which can change the direction of the laser output and allow the laser to be incident on fiber optic heads at different positions.

[0006] To achieve these objectives and other advantages of this invention, a device for changing the optical path of a laser is provided, comprising:

[0007] A laser, which is used to emit laser light;

[0008] A galvanometer is disposed in the laser beam path emitted by the laser.

[0009] An FC fiber interface assembly is located on the same side of the galvanometer as the laser, a first reflecting surface of the galvanometer reflects the laser emitted by the laser into the FC fiber interface assembly, and the FC fiber interface assembly is fixedly connected with a fiber head;

[0010] A laser light source is arranged on the other side of the galvanometer;

[0011] A displacement sensor is arranged on the other side of the galvanometer, a second reflecting surface of the galvanometer reflects the laser emitted by the laser light source into the displacement sensor, and the laser reflected into the FC fiber interface assembly is calibrated by the displacement sensor.

[0012] Preferably, a plurality of FC fiber interface assemblies are arranged at different positions, and the laser beam emitted by the laser is split into a plurality of beams through the periodic deflection of the galvanometer and the reflection of the first reflecting surface of the galvanometer.

[0013] Preferably, the lens of the galvanometer is fixedly arranged on the first galvanometer motor.

[0014] Preferably, a fixed plate is vertically arranged, a through hole is arranged on the fixed plate, the laser light source is arranged in the through hole, and the displacement sensor is fixedly arranged on the side of the fixed plate.

[0015] Preferably, a housing is further included, the laser, the FC fiber interface assembly, the galvanometer, the first galvanometer motor, the displacement sensor, and the fixed plate are arranged in the housing.

[0016] Preferably, a fiber head fixing frame is further included, and the other end of the fiber connected with each FC fiber interface assembly is fixedly arranged on the fiber head fixing frame.

[0017] Preferably, the fiber head fixing frame includes:

[0018] A fiber collimator is arranged in the other end of the fiber;

[0019] A collimator fixing frame is arranged below the fiber collimator and is used for fixing the fiber collimator.

[0020] A second galvanometer motor is arranged on the collimator fixing frame.

[0021] Preferably, the cross section of the collimator fixing frame is arc-shaped.

[0022] The utility model at least includes following beneficial effects:

[0023] First, a plurality of FC fiber interface assemblies are provided at different positions, and through the periodic deflection of the galvanometer, a single laser beam emitted by the laser can be reflected by the first reflecting surface of the galvanometer and then enter the plurality of FC fiber interface assemblies, thereby realizing the function of splitting the single laser beam into multiple beams and meeting the requirements of different application scenarios such as multi-path transmission and multi-target irradiation.

[0024] Second, a laser light source is arranged on the other side of the galvanometer, and the laser emitted by the laser light source is reflected by the second reflecting surface of the galvanometer and then enters the displacement sensor. This design adds a calibration function to the optical path system and expands the functions of the entire device, so that the device can not only change the optical path and split the beam, but also realize self-calibration, thereby improving the practicality and reliability of the device. By using the displacement sensor to calibrate the laser entering the FC fiber interface assembly, the laser path can be monitored and adjusted in real time, ensuring that the laser can accurately enter the FC fiber interface assembly and improving the accuracy and stability of the optical path transmission, which is very important for some applications that require high optical path accuracy.

[0025] Third, the laser and the FC fiber interface assembly are arranged on the same side of the galvanometer, and the laser light source and the displacement sensor are arranged on the other side of the galvanometer. This layout makes full use of the space on both sides of the galvanometer, making the structure of the entire device more compact and conducive to reducing the overall size of the device.

[0026] Fourth, the change of the optical path and the splitting of the beam are realized by the galvanometer, and the automatic calibration is realized by using the displacement sensor, thereby reducing the need for manual intervention and adjustment and improving the automation degree and work efficiency of the optical path system.

[0027] Other advantages, objectives and features of the present utility model will be partially embodied through the following description, and some will be understood by those skilled in the art through research and practice of the present utility model. BRIEF DESCRIPTION OF DRAWINGS

[0028] Figure 1 It is a top view structural schematic diagram of the device for changing the optical path of the laser of the present utility model;

[0029] Figure 2 It is a side view structural schematic diagram of the optical fiber head fixing frame of the present utility model;

[0030] Figure 3 It is another side view structural schematic diagram of the optical fiber head fixing frame of the present utility model. DETAILED DESCRIPTION

[0031] The present utility model will be further described in detail below with reference to the drawings, so that those skilled in the art can implement it according to the description.

[0032] It should be understood that the terms such as "have", "contain", and "include" used herein do not exclude the presence or addition of one or more other elements.

[0033] It should be noted that the experimental methods in the following embodiments are conventional methods, and the reagents and materials are commercially available unless otherwise specified. In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connection", "setting" should be understood in a broad sense. For example, it can be fixedly connected, set, or detachably connected, set, or integrally connected, set. For those skilled in the art, the specific meanings of the above terms in the present application can be understood according to the specific circumstances. The orientations or positional relationships indicated by the terms "transverse", "longitudinal", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0034] As shown in Figure 1 The utility model provides a kind of device for changing laser light path, comprising: laser 1, for emitting laser;Galvanometer 2, it is arranged on the laser light path of the laser 1 emission;FC fiber optic interface component 3, and the laser 1 are located in the same side of the galvanometer 2, the first reflecting surface of the galvanometer 2 is reflected to the laser of the laser 1 emission and enters the FC fiber optic interface component 3, the FC fiber optic interface component 3 is fixedly connected with a fiber head;Laser light source 4, it is arranged on the other side of the galvanometer 2;Displacement sensor 5, it is arranged on the other side of the galvanometer 2, the second reflecting surface of the galvanometer 2 is reflected to the laser of the laser light source 4 emission and enters the displacement sensor 5, and the laser that is shot to the FC fiber optic interface component 3 is calibrated by the displacement sensor 5.

[0035] In the above embodiment, the laser 1 is preferably a fiber laser, and the laser light source 4 can be a laser pen or other; the displacement sensor 5 is a linear displacement sensor 5, the mirror 203 of the galvanometer 2 is fixedly arranged on the first galvanometer motor 202, and the first galvanometer motor 202 is arranged on a galvanometer fixed support 201. The displacement sensor 5 and the first galvanometer motor 202 are electrically connected with the control unit. The calibration process of the displacement sensor 5 is as follows: first, the initial position of the displacement sensor 5 is calibrated, the laser light source 4 emits laser light, which is reflected by the second reflecting surface of the galvanometer 2 and enters the displacement sensor 5, at this time the displacement sensor 5 measures an initial laser position signal; at the same time, for the FC fiber interface assembly 3, the laser emitted by the laser 1 is reflected by the first reflecting surface of the galvanometer 2 and enters the FC fiber interface assembly 3, which is also considered as a standard position, and the standard position information can be stored in the control unit as a reference for subsequent calibration. The displacement sensor 5 continuously monitors the laser position information after the laser emitted by the laser light source 4 is reflected by the second reflecting surface of the galvanometer 2, when various interference factors such as mechanical vibration, temperature change or gas flow affect occur, the laser position will change, the displacement sensor 5 compares the real-time laser position information monitored with the standard position information calibrated initially, and the displacement sensor 5 feeds back the deviation information calculated to the control unit, and the control unit adjusts the deflection angle of the galvanometer 2 according to the deviation information, so that the laser emitted by the laser 1 can accurately enter the FC fiber interface assembly 3 after being reflected by the first reflecting surface of the galvanometer 2. In addition, the diameter of the optical fiber 7 connected with the FC fiber interface assembly 3 is usually 40-400 microns, and different diameters of the optical fiber 7 can be selected according to actual application. The FC in the FC fiber interface assembly is the abbreviation of Ferrule Connector, and the external strengthening method is to use a metal sleeve, and the fastening method is a screw buckle.

[0036] Therefore, the laser light source 4 is arranged on the other side of the galvanometer 2, and the laser emitted by the laser light source 4 is reflected by the second reflecting surface of the galvanometer 2 and enters the displacement sensor 5, which adds a calibration function to the optical path system and expands the function of the whole device, so that the device not only can change the optical path, but also can realize self-calibration, thereby improving the practicability and reliability of the device. The laser emitted by the laser light source 4 is reflected by the second reflecting surface of the galvanometer 2 and enters the displacement sensor 5, which adds a calibration function to the optical path system and expands the function of the whole device, so that the device not only can change the optical path, but also can realize self-calibration, thereby improving the practicability and reliability of the device. The laser emitted by the laser light source 4 is reflected by the second reflecting surface of the galvanometer 2 and enters the displacement sensor 5, which adds a calibration function to the optical path system and expands the function of the whole device, so that the device not only can change the optical path, but also can realize self-calibration, thereby improving the practicability and reliability of the device. The laser emitted by the laser light source 4 is reflected by the second reflecting surface of the galvanometer 2 and enters the displacement sensor 5, which adds a calibration function to the optical path system and expands the function of the whole device, so that the device not only can change the optical path, but also can realize self-calibration, thereby improving the practicability and reliability of the device.

[0037] In one specific embodiment, the FC fiber interface assembly 3 is provided with a plurality of FC fiber interface assemblies 3 arranged at different positions, and the laser beam emitted by the laser 1 enters the plurality of FC fiber interface assemblies 3 after being reflected by the first reflecting surface of the galvanometer 2, and a single laser beam is divided into a plurality of beams.

[0038] In the above embodiment, a plurality of FC fiber interface assemblies 3 are arranged at different positions, and through periodic deflection of the galvanometer 2, a single laser beam emitted by the laser 1 can enter the plurality of FC fiber interface assemblies 3 after being reflected by the first reflecting surface of the galvanometer 2, thereby realizing the function of splitting a single laser beam into multiple beams and meeting the requirements of different application scenarios such as multi-path transmission and multi-target irradiation. In specific implementation, the FC fiber interface assemblies 3 can be arranged as two or three. When arranged as two, through periodic deflection of the galvanometer 2, the laser beam is switched between the two FC fiber interface assemblies 3, so that the laser beam is split into two. Through the galvanometer 2, the optical path is changed and the beam is split, and at the same time, the laser light emitted to the two FC fiber interface assemblies 3 is calibrated by the laser light source 4 and the displacement sensor 5, thereby reducing the need for manual intervention and adjustment and improving the automation degree and working efficiency of the optical path system.

[0039] In one of the specific embodiments, a fixed plate 6 is further included, which is arranged vertically, and a through hole is arranged on the fixed plate 6, the laser light source 4 is arranged in the through hole, and the displacement sensor 5 is fixedly arranged on the side surface of the fixed plate 6. The arrangement of the fixed plate 6 facilitates the fixation of the laser light source 4 and the displacement sensor 5.

[0040] In one of the specific embodiments, a housing 8 is further included, and the laser 1, the FC fiber interface assemblies 3, the galvanometer 2, the first galvanometer motor 202, the displacement sensor 5, and the fixed plate 6 are all arranged inside the housing 8. The arrangement of the housing 8 can protect the devices.

[0041] In one of the specific embodiments, as shown in Figure 2 and Figure 3 a fiber head fixing frame 9 is further included, and the other end of the fiber 7 connected with each FC fiber interface assembly 3 is fixedly arranged on the fiber head fixing frame 9.

[0042] Specifically, the fiber head fixing frame 9 includes:

[0043] a fiber collimator 903, in which the other end of the fiber 7 is fixedly inserted;

[0044] a collimator fixing frame 902 arranged below the fiber collimator 903 for fixing the fiber collimator 903, and the cross section of the collimator fixing frame 902 is arc-shaped;

[0045] a second galvanometer motor 901, on which the collimator fixing frame 902 is fixed.

[0046] In the above-mentioned embodiments, the optical fiber head fixing frame 9 is arranged, which can fix the other end of the optical fiber 7 and rotate the other end of the optical fiber 7 according to requirements.

[0047] In conclusion, the utility model can change the direction of the laser output laser, and can make the laser incident into the optical fiber head at different positions. It solves the problem that the optical fiber laser 1 laser output beam direction is single and cannot be changed, improves the processing efficiency, makes the optical fiber laser suitable for more complex application scenarios, and makes many system design concepts be realized and finally implemented in actual commercial application.

[0048] The number of devices and the processing scale described herein are used to simplify the description of the utility model. The application, modification and change of the utility model are obvious to those skilled in the art.

[0049] Although the embodiments of the utility model have been disclosed as above, it is not limited to the application listed in the specification and the embodiments, and it can be fully applied to various fields suitable for the utility model. For those skilled in the art, other modifications can be easily realized, therefore the utility model is not limited to specific details and the figures shown and described herein, without departing from the general concept defined by the claims and the equivalent scope.

Claims

1. Apparatus for altering the optical path of a laser, characterized in that, The utility model relates to a laser calibration device, including: a laser for emitting laser; a galvanometer arranged on the laser light path of the laser; an FC fiber interface assembly, which is located on the same side of the galvanometer as the laser, the first reflecting surface of the galvanometer reflects the laser emitted by the laser into the FC fiber interface assembly, and the FC fiber interface assembly is fixedly connected with a fiber head; a laser light source arranged on the other side of the galvanometer; a displacement sensor arranged on the other side of the galvanometer, the second reflecting surface of the galvanometer reflects the laser emitted by the laser light source into the displacement sensor, and the laser entering the FC fiber interface assembly is calibrated by the displacement sensor.

2. The device for altering the optical path of a laser as claimed in claim 1, characterized in that, The FC fiber interface assembly is provided with a plurality of FC fiber interface assemblies arranged at different positions, and the laser beam emitted by the laser enters the plurality of FC fiber interface assemblies through the periodic deflection of the galvanometer and the reflection of the first reflecting surface of the galvanometer, and the single laser beam is divided into a plurality of laser beams.

3. The apparatus for altering the optical path of a laser as defined in claim 1, wherein, The lens of the galvanometer is fixedly arranged on a first galvanometer motor.

4. The apparatus for altering the optical path of a laser as defined in claim 3, wherein, Further comprising a fixed plate arranged vertically, a through hole is arranged on the fixed plate, the laser light source is arranged in the through hole, and the displacement sensor is fixedly arranged on the side surface of the fixed plate.

5. The apparatus for altering the optical path of a laser as defined in claim 4, wherein, Further comprising a shell, the laser, the FC fiber interface assembly, the galvanometer, the first galvanometer motor, the displacement sensor and the fixed plate are arranged in the shell.

6. The apparatus for altering the optical path of a laser of claim 1, wherein, Further comprising a fiber head fixing frame, the other end of the fiber connected with each FC fiber interface assembly is fixedly arranged on the fiber head fixing frame.

7. The apparatus for altering the optical path of a laser as defined in claim 6, wherein, The fiber head fixing frame comprises: a fiber collimator, the other end of the fiber is fixedly inserted into the fiber collimator; a collimator fixing frame arranged below the fiber collimator for fixing the fiber collimator; a second galvanometer motor, the collimator fixing frame is fixed on the second galvanometer motor.

8. The apparatus for altering the optical path of a laser as defined in claim 7, wherein, The cross section of the collimator fixing frame is arc-shaped.

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