Four-path laser system

Abstract

A four-path laser system (10), comprising: a laser (100) configured to output four laser beams; a first reflecting mirror assembly (200) comprising four first reflecting mirrors (210), wherein each first reflecting mirror (210a, 210b, 210c, and 210d) is respectively aligned with a corresponding one of the four laser beams, and the angle of each first reflecting mirror (210a, 210b, 210c, and 210d) relative to the corresponding laser beam is configured such that the corresponding laser beam is reflected and then passes through an optical axis of the four-path laser system (10); and a second reflecting mirror assembly (300) arranged between the laser (100) and the first reflecting mirror assembly (200), wherein the second reflecting mirror assembly (300) comprises at least two bases (321, 322) and four second reflecting mirrors (310) respectively arranged opposite to the four first reflecting mirrors (210); the four second reflecting mirrors (310) are respectively arranged on the at least two bases (321, 322), and the at least two bases (321, 322) can translate relatively independently, so that each second reflecting mirror (310a, 310b, 310c, and 310d) can be translated to the optical axis, wherein the distance between each second reflecting mirror (310a, 310b, 310c, and 310d) and the corresponding first reflecting mirror (210a, 210b, 210c, and 210d) is set such that the laser beam reflected by the corresponding first reflecting mirror (210a, 210b, 210c, and 210d) can be received on the optical axis, and the angle of each second reflecting mirror (310a, 310b, 310c, and 310d) relative to the reflected laser beam is configured such that the laser beam reflected by the corresponding first reflecting mirror (210a, 210b, 210c, and 210d) can be reflected along the optical axis.

Description

Four-way laser system Technical Field

[0001] The present disclosure generally relates to the field of laser devices, and more particularly to a four-way laser system. Background Art

[0002] Laser therapy machines based on laser devices have been widely used in medical surgery due to their non-invasive or minimally invasive advantages. Taking holmium lasers as an example, they are usually single-channel lasers or dual-channel lasers. Each laser emits pulses for laser treatment. In particular, when laser lithotripsy is used, the higher the pulse frequency and the higher the power, the better the surgical effect and efficiency. Damage to a single-channel laser will cause the surgery to be interrupted or terminated. When a laser system with two or more channels works periodically in turn, there is a time interval between each laser emission. Damage to two laser channels increases the loss of the other laser, making it difficult for laser surgery to meet the complex actual clinical application requirements in terms of pulse frequency and power, reducing the effectiveness of laser surgery, especially laser lithotripsy, and increasing the time of laser surgery, affecting efficiency.

[0003] Some existing multi-channel laser devices require complex structures to operate with multiple lasers, resulting in poor reliability and difficulty in debugging and maintenance of the multi-channel laser devices.

[0004] Summary of the Invention

[0005] The present disclosure aims to provide a four-way laser system with higher efficiency and power.

[0006] To solve the above technical problems, the present disclosure provides a four-path laser system, comprising: a laser configured to output four laser beams; a first reflector assembly, comprising four first reflectors, each first reflector being respectively aligned with a corresponding one of the four laser beams, and the angle of each first reflector relative to the corresponding laser beam being configured so as to reflect the corresponding one laser beam through the optical axis of the four-path laser system; and a second reflector assembly, arranged between the laser and the first reflector assembly, the second reflector assembly comprising at least two mirror mounts and four second reflectors respectively arranged opposite to the four first reflectors, the four second reflectors being respectively arranged on at least two mirror mounts, and the at least two mirror mounts being capable of relatively independent translation so that each second reflector can be translated to the optical axis, wherein the distance between each second reflector and the corresponding first reflector is set so as to be able to receive the laser beam reflected by the corresponding first reflector on the optical axis, and the angle of each second reflector relative to the reflected laser beam being configured so as to be suitable for reflecting the laser beam reflected by the corresponding first reflector along the optical axis.

[0007] In some embodiments of the present disclosure, the four-path laser system further includes a controller configured to control the laser to selectively output one laser beam, and control the second reflector assembly to translate one of the mirror mounts so that the corresponding second reflector is aligned with the optical axis.

[0008] In some embodiments of the present disclosure, a laser includes a resonant cavity and an excitation source located in the resonant cavity, and the resonant cavity includes a four-way total reflection mirror assembly and a four-way output mirror assembly that are relatively arranged.

[0009] In some embodiments of the present disclosure, the first reflector assembly also includes a bracket, four wedge plates and four bases, the four wedge plates are arranged on the bracket and have inclined surfaces facing the second reflector assembly, the four bases are respectively arranged on the inclined surfaces of the four wedge plates, and the four first reflectors are respectively set on the four bases.

[0010] In some embodiments of the present disclosure, the first reflector assembly has a first optical axis hole located on the optical axis to allow the laser beams reflected by the second reflectors to pass through.

[0011] In some embodiments of the present disclosure, each second reflector is arranged parallel to the corresponding first reflector.

[0012] In some embodiments of the present disclosure, the at least two mirror mounts include a first mirror mount and a second mirror mount arranged in front and behind of each other in a propagation direction of the laser beam.

[0013] In some embodiments of the present disclosure, the second reflector assembly includes a first linear drive mechanism and a second linear drive mechanism, and the first mirror seat and the second mirror seat are respectively arranged on the first linear drive mechanism and the second linear drive mechanism.

[0014] In some embodiments of the present disclosure, the four-way laser system further includes: a coupling lens, which is disposed on the back side of the first reflector assembly opposite to the light-emitting side and is located on the optical axis to receive the laser beam reflected by each second reflector; and an output optical fiber, which is connected to the light-emitting side of the coupling lens.

[0015] In some embodiments of the present disclosure, the four laser beams define four vertices of a square, the four first reflecting mirrors define four vertices of another square, and the four second reflecting mirrors define four vertices of a rhombus. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The accompanying drawings are included to provide a further understanding of the present application, and are incorporated into and constitute a part of this application. The accompanying drawings illustrate embodiments of the present application and, together with this specification, serve to explain the principles of the present disclosure. In the accompanying drawings:

[0017] FIG1 is a schematic diagram of a four-laser system and its optical path A according to some embodiments of the present application.

[0018] FIG2 is a schematic diagram of an excitation source according to some embodiments of the present application.

[0019] 3A-3C are schematic diagrams of a first reflector assembly according to some embodiments of the present application.

[0020] FIG4 is a schematic three-dimensional diagram of a first mirror holder according to some embodiments of the present application.

[0021] FIG5 is a schematic three-dimensional diagram of a second mirror mount according to some embodiments of the present application.

[0022] FIG6 is a schematic diagram of an optical path B of a four-laser system according to some embodiments of the present application.

[0023] FIG7 is a schematic diagram of an optical path C of a four-laser system according to some embodiments of the present application.

[0024] FIG8 is a schematic diagram of an optical path D of a four-laser system according to some embodiments of the present application. DETAILED DESCRIPTION

[0025] To more clearly illustrate the technical solutions of the embodiments of this application, the following is a brief introduction to the drawings required for describing the embodiments. Obviously, the drawings described below are merely examples or embodiments of this application. Those skilled in the art can apply this application to other similar scenarios based on these drawings without inventive effort. Unless otherwise apparent from the context or otherwise noted, the same reference numerals in the figures represent the same structure or operation.

[0026] As used in this application and the claims, unless the context clearly indicates otherwise, the words "a," "an," "an," and / or "the" are not intended to refer to the singular but may include the plural. Generally speaking, the terms "comprises" and "include" only indicate the inclusion of the steps and elements specifically identified, and these steps and elements do not constitute an exclusive list. A method or apparatus may also include other steps or elements.

[0027] Unless otherwise specifically stated, the relative arrangement of the parts and steps, numerical expressions and numerical values ​​set forth in these embodiments do not limit the scope of the present application. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the drawings are not drawn according to actual proportional relationships. The techniques, methods and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, the techniques, methods and equipment should be considered as part of the authorization specification. In all examples shown and discussed here, any specific values ​​should be interpreted as being merely exemplary and not as limitations. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that similar numbers and letters represent similar items in the following figures, and therefore, once an item is defined in one figure, it does not need to be further discussed in subsequent figures.

[0028] In the description of this application, it should be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "horizontal, vertical, vertical, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of this application; the directional words "inside and outside" refer to the inside and outside relative to the outline of each component itself.

[0029] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used herein to describe the spatial positional relationship of a device or feature to other devices or features as shown in the figures. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figures. For example, if the device in the drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0030] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is solely for the purpose of distinguishing the corresponding components. Unless otherwise stated, these terms have no special meaning and therefore should not be construed as limiting the scope of protection of this application. Furthermore, while the terms used in this application are selected from commonly known and commonly used terms, some terms mentioned in this specification may have been selected by the applicant at his or her discretion, and their detailed meanings are explained in the relevant sections of this description. Furthermore, this application should be understood not only by the actual terms used, but also by the meaning implied by each term.

[0031] 1 is a schematic diagram of a four-way laser system and its optical path A according to some embodiments of the present application. The four-way laser system 10 according to the present disclosure includes a laser 100 , a first reflector assembly 200 , and a second reflector assembly 300 , wherein the second reflector assembly 300 is located between the laser 100 and the first reflector assembly 200 .

[0032] FIG2 is a schematic diagram of an excitation source according to some embodiments of the present application. Laser 100 includes a four-way total reflection mirror assembly 111, a four-way output mirror assembly 112, and an excitation source 120. Four-way total reflection mirror assembly 111 and four-way output mirror assembly 112 are positioned relative to each other to form a resonant cavity 110. Excitation source 120 is located within resonant cavity 110, i.e., between four-way total reflection mirror assembly 111 and four-way output mirror assembly 112.

[0033] Specifically, in this embodiment, the excitation source 120 has four light output units 130, adapted to output four laser beams. For ease of description, these units are designated as light output unit A 130a, light output unit B 130b, light output unit C 130c, and light output unit D 130d. Each light output unit 130 includes a xenon lamp 131 and a crystal 132. The xenon lamp 131 includes four xenon lamps 131a-131d, and the crystal 132 includes four crystals 132a-132d. The xenon lamp 131 emits energy to excite the crystal 132, generating laser light. This energy oscillates within the resonant cavity 110 and is ultimately output via different optical paths.

[0034] Figures 3A-3B are perspective views of the first reflector assembly according to some embodiments of the present application from different angles. Figure 3C is a perspective view of the first reflector assembly according to some embodiments of the present application. The first reflector assembly 200 includes four first reflectors 210, which are respectively designated as A-path first reflector 210a, B-path first reflector 210b, C-path first reflector 210c, and D-path first reflector 210d for ease of description. The first reflector assembly 200 also includes a bracket 201, four wedge-shaped plates 202, and four bases 203. The bracket 201 can be mounted vertically and has a storage space. The four wedge-shaped plates 202 are mounted at the four corners of the storage space of the bracket 201 and have inclined surfaces facing the second reflector assembly 300, with the inclined surfaces slightly tilted toward the center of the bracket 201. The four bases 203 are respectively mounted on the inclined surfaces of the four wedge-shaped plates 202, and the four first reflectors 210 are respectively mounted on the four bases 203. Since the inclined surfaces of the wedge-shaped plates 202 are slightly inclined toward the center of the bracket 201, the fixed reflectors 210 are slightly inclined toward the center of the bracket 201, that is, inclined in a direction close to the optical axis O and forming a certain angle with the optical axis O.

[0035] Furthermore, in this embodiment, the first reflector assembly 200 is fixed. Specifically, the position of the first reflector assembly 200 in the four-way solid-state holmium laser system 10 is fixed, and the position of each first reflector 210 in the first reflector assembly 200 is also fixed during the operation of the laser system. However, when the laser system is not working, the angle of each first reflector 210 can be fine-tuned to more accurately reflect the laser beam to ensure that each laser beam is coupled to the optical fiber core. Specifically, each first reflector 210 includes a mirror base 211 and a lens 212. Two screws 213 are provided on the corners of the mirror base 211 (see Figure 3B for details), and each lens 212 is mounted on the corresponding mirror base 211 by these screws 213. By adjusting the screws 213 on the corners to change the distance between the mirror base 211 and the lens 212, the angle of each first reflector 210 relative to the base 203 can be fine-tuned. It can be understood that the larger the angle of the first reflector 210 relative to the base 203, the shorter the optical path to the second reflector assembly 300. Similarly, the smaller the angle of the first reflector 210 relative to the base 203, the longer the optical path of the laser reflected by it to the second reflector assembly 300, thereby improving the scope of application of the present application.

[0036] FIG4 is a perspective schematic diagram of a first mirror mount according to some embodiments of the present application, and FIG5 is a perspective schematic diagram of a second mirror mount according to some embodiments of the present application. Referring to FIG1 , FIG4-5 , and corresponding to the first reflector assembly 20 , the second reflector assembly 300 in this embodiment includes four second reflectors 310 , designated as the A-path second reflector 310 a, the B-path second reflector 310 b, the C-path second reflector 310 c, and the Dx-path second reflector 310 d. The second reflector assembly 300 also includes two mirror mounts, designated as a first mirror mount 321 and a second mirror mount 322 . The A-path second reflector 310 a and the B-path second reflector 310 b are mounted on the first mirror mount 321 , while the C-path second reflector 310 c and the D-path second reflector 310 d are mounted on the second mirror mount 322 . The first mirror mount 321 and the second mirror mount 322 are arranged in front of and behind each other in the direction of laser beam propagation and can be independently translated to achieve switching between different laser paths.

[0037] Furthermore, the second reflector assembly 300 also includes a first base 301, a first carrier plate 302, a first linear drive mechanism 303, a second base 304, a second carrier plate 305, and a second linear drive mechanism 306. The first carrier plate 302 is mounted on the first base 301. The first linear drive mechanism 303 is mounted on the first carrier plate 302, and the first mirror mount 321 is mounted on the first linear drive mechanism 303. The first linear drive mechanism 303 is capable of driving the first mirror mount 321 and the second reflector 310a of path A and the second reflector 310b of path B thereon to move along the first direction X on the first carrier plate 302. When the translation reflector 310a of path A or the translation reflector 310b of path B moves along the first direction X, they approach the optical axis in the X direction, ensuring normal operation of optical path A or path B. The second carrier plate 305 is mounted on the second base 304. The second linear drive mechanism 306 is mounted on the second carrier plate 305, and the second mirror mount 322 is mounted on the second linear drive mechanism 306. The second linear drive mechanism 306 is capable of driving the second mirror mount 322 and the C-path second reflector 310c and the D-path second reflector 310d thereon to move along the second direction Y on the second carrier 305. Here, the first direction X and the second direction Y intersect and are preferably perpendicular to each other. As shown in FIG1 , both the first direction X and the second direction Y are inclined at 45° relative to the horizontal plane.

[0038] In this embodiment, the linear drive mechanism 303, 306 uses a motor and a screw rod structure that cooperates therewith. In some other embodiments of the present application, the linear drive mechanism 303, 306 includes a linear motor, which is not specifically limited in the present application.

[0039] As shown in Figures 1-5, a preferred embodiment of the present application is shown. In this embodiment, there are four laser beams and they are arranged in a square, that is, the four laser beams define the four vertices of the square. Correspondingly, there are four light-emitting parts 130, four first reflectors 210, and four second reflectors 310. Among them, the first reflectors 210 are arranged in a square, that is, the four first reflectors define the four vertices of another square, and the second reflectors 310 are arranged in a cross / diamond shape, that is, the four second reflectors define the four vertices of the diamond. Specifically, the straight line where the second reflectors 310a of path A and the second reflectors 310b of path B are located and the straight line where the second reflectors 310c of path C and the second reflectors 310d of path D are located are in a cross shape.

[0040] Furthermore, the laser beam output by the excitation source 120 is suitable for being reflected by the first reflector assembly 200 at the first position S ab Passing through the optical axis O (dashed line in FIG1 ) of the four-way laser system 10, and passing through the first position S ab After being reflected by the second reflector assembly 300, the laser beam is output along the optical axis. In the embodiment shown in Figures 1-4, the four-way laser system also includes a coupling lens 400 and an output optical fiber 500, wherein the coupling lens 400 is arranged on the side of the first reflector assembly 200 relative to the second reflector assembly 300, that is, the back side opposite to the light output side, and the coupling lens 400 is located on the optical axis to receive the laser beam reflected by each second reflector 310, and finally output through the output optical fiber 500. It can be understood that the term "optical axis" is defined by the laser beam output by the output optical fiber 500, which coincides with the output optical fiber 500. It should be understood that the optical axis is not a physical structure, but only a spatial concept to indicate the direction of the output laser beam.

[0041] As used herein, the term "light-emitting side" refers to the side where components such as lasers, excitation sources, and reflectors emit or reflect outgoing light, that is, the downstream side of the optical path.

[0042] It should be noted that, in this embodiment, the four second reflectors 310 are arranged on the first mirror seat 321 and the second mirror seat 322 arranged in a front-to-rear manner, wherein the second reflector 310a of path A and the second reflector 310b of path B are located on the first mirror seat 321, and the second reflector 310c of path C and the second reflector 310d of path D are located on the second mirror seat 322. Therefore, the first position S for the second reflector 310 is not unique: the first position corresponding to the second reflector 310a of path A and the second reflector 310b of path B is S. ab (Referring to FIG1 ), the second position corresponding to the C-path second reflector 310c and the D-path second reflector 310d is S cd(See Figure 2 ). It is understood that the first reflector 210a of path A and the first reflector 210b of path B deflect the incident laser beam at the same angle, and the first reflector 210c of path C and the first reflector 210d of path D deflect the incident laser beam at the same angle. For ease of understanding, the optical path A of the four-path laser system 10 is described in detail with reference to Figures 1-5 as follows:

[0043] When the A-path light emitting portion 130 a in the excitation source 120 is working, that is, when the A-path xenon lamp 131 a emits energy, the laser beam output by the laser 100 will be output via the optical path A.

[0044] The angle of the first reflector 210a of the A-path in the first reflector assembly 200 relative to the incident laser beam is configured to reflect the laser beam output by the A-path light emitting portion 130a to the first position S ab The intersection of the plane where the second reflector assembly 300 is located and the straight line where the output optical fiber 500 is located is located.

[0045] At this time, the first mirror holder 321 in the second reflector assembly 300 is driven by the first linear drive mechanism 303 to translate in the X direction, so that the second reflector 310a of path A (see Figures 4-5) is located at the optical axis O (see Figure 1), and can receive the laser beam reflected by the first reflector 210a of path A and reflect it again. It should be noted that the second reflector 310a of path A is parallel to the first reflector 210a of path A. Therefore, the optical path of the laser beam reflected by the second reflector 310a of path A is parallel to the output optical path of the light output portion 130a of path A, that is, it is output along the optical axis O.

[0046] As shown in Figures 3A-3C, in order to prevent the light path from being blocked, the first reflector assembly 200 is provided with a first optical axis hole 220 at the optical axis position. After two reflections (reflected by the first reflector assembly 200 and the second reflector assembly 300), the laser beam passes through the first optical axis hole 220 and then through the coupling lens 400, and is finally output through the output optical fiber 500.

[0047] With reference to Figures 1-5 , it is particularly important to note that in this embodiment, the first mirror mount 321, on which the second reflector 310a of path A and the second reflector 310b of path B are mounted, is located at the distal end of the first reflector assembly 200 relative to the second mirror mount 322. To prevent the laser beams of path A and path B from being blocked by the second mirror mount 322, a second optical axis hole 330a is provided on the second mirror mount 322 for the laser beams to pass through. Specifically, in the embodiment shown in Figure 1 , the second optical axis hole 330a is provided between the two second reflectors 310c and 310d of the second mirror mount 322 (see Figure 5 ). Furthermore, when the second reflector 310 on the second mirror mount 322 is not in operation, the second linear drive mechanism 306 moves the second mirror mount 322 to a position in which the second optical axis hole 330a between the two second reflectors 310c and 310d is located on the optical axis O, thereby not blocking the laser beam of path A. In addition, the second mirror base 322 is further provided with a beam through hole 330b (see FIG5 ) to avoid blocking the laser beam from the laser 100. It is understood that the number and position of the beam through holes are not limited and are determined according to the optical path of the laser beam.

[0048] Furthermore, the four-way laser system 10 provided in the present disclosure also has a controller, which is configured to control the laser 100 to selectively output a laser beam, and control the first linear drive mechanism 303 and the second linear drive mechanism 306 to respectively drive the second reflector 310a of path A and the second reflector 310b of path B, the second reflector 310c of path C and the second reflector 310d of path D to translate in the X and Y directions, so that the corresponding second reflector 310 moves to the optical axis O and is not blocked. In one embodiment, the controller periodically controls the laser 100 to output laser beams in turn in the order of ABCD. It can be understood that the angles of each first reflector 210a, 210b, 210c and 210d in the first reflector assembly 200 are configured to reflect the corresponding incident laser beam at the first position S ab Each second reflector 310a, 310b, 310c and 310d is parallel to the corresponding first reflector 210a, 210b, 210c and 210d, so only translation is required to complete the reflection.

[0049] FIG6 is a schematic diagram of optical path B of a four-path laser system according to some embodiments of the present application. Referring to FIG1-6 , when the controller controls the B-path light output portion 130b in the laser 100 to operate, the laser beam output by the laser 100 is output via optical path B. At this time, the controller synchronously controls the first mirror holder 321 to translate under the drive of the first linear drive mechanism 303, causing the corresponding B-path second reflector 310b (see FIG4-5 ) to move to the optical axis O (at this time, the second mirror holder 322 translates to or remains so that the optical path of the laser beam reflected by the first reflector assembly 200 can pass through the second through hole 330 on the second mirror holder 322). The B-path second reflector 310b receives the laser beam reflected by the B-path first reflector 210b (not shown in FIG6 due to angle reasons, but refer to FIG3A ) and reflects it again. After two reflections, the laser beam is output along the optical axis O and ultimately enters the output optical fiber 500.

[0050] FIG7 is a schematic diagram of the optical path C of the four-path laser system in some embodiments of the present application. Referring to FIG1-5 and FIG7, when the controller controls the C-path light output portion 130c in the laser 100 to operate, the laser beam output by the laser 100 will be output via the optical path C. The controller synchronously controls the second linear drive mechanism 306 to drive the second mirror holder 322 to translate, thereby moving the corresponding C-path second reflector 310c to the optical axis. The C-path second reflector 310c receives the laser beam reflected by the C-path first reflector 210c (not shown in FIG7 due to angle reasons, refer to FIG3) and reflects it again. After two reflections, the laser beam is output along the optical axis O and finally enters the output optical fiber 500.

[0051] It should be noted that in this embodiment, the second mirror mount 322 on which the C-path second reflector 310c and the D-path second reflector 310d are mounted is located near the first reflector assembly 200 compared to the first mirror mount 321, so there is no need to worry about the laser beam reflected by the first reflector assembly 200 being blocked.

[0052] FIG8 is a schematic diagram of optical path D of a four-path laser system according to some embodiments of the present application. Referring to FIG1-5 and FIG8 , when the controller controls the D-path light output portion 130d in the laser 100 to operate, the laser beam output by the laser 100 is output via optical path D. The controller synchronously controls the second linear drive mechanism 304 to drive the second mirror holder 322 to translate, thereby moving the corresponding D-path second reflector 310d to the optical axis O. The D-path second reflector 310d receives the laser beam reflected by the D-path first reflector 210d and reflects it again. After two reflections, the laser beam is output along the optical axis O and ultimately enters the output optical fiber 500.

[0053] The four-way laser system 10 provided in the present application can control the four lasers to work periodically in turn, reducing the blank time when the laser beam cannot be output, and greatly improving the frequency and reliability during laser treatment. Furthermore, the second reflector in the four-way laser system provided by the present disclosure is respectively arranged on at least two mirror seats, which effectively shortens the time required for the second reflector to move to the optical axis O compared to a single-way laser system or a dual-way laser system, and can further improve the pulse frequency and laser power during laser treatment. In addition, during laser treatment, the four-way laser system 10 only needs to add a first reflector assembly 200 and a second reflector assembly 300, and the overall structure is simple and compact, which is convenient for debugging and maintenance.

[0054] The basic concepts have been described above. It will be apparent to those skilled in the art that the above disclosures are merely illustrative and do not constitute limitations on this application. Although not explicitly stated herein, those skilled in the art may make various modifications, improvements, and amendments to this application. Such modifications, improvements, and amendments are suggested in this application and remain within the spirit and scope of the exemplary embodiments of this application.

[0055] At the same time, this application uses specific terms to describe the embodiments of this application. For example, "one embodiment," "some embodiments," and / or "some embodiments" refer to a certain feature, structure, or characteristic related to at least one embodiment of this application. Therefore, it should be emphasized and noted that "some embodiments" or "one embodiment" or "an alternative embodiment" mentioned twice or multiple times in different places in this specification do not necessarily refer to the same embodiments. In addition, certain features, structures, or characteristics in one or more embodiments of this application may be appropriately combined.

[0056] Similarly, it should be noted that, in order to simplify the presentation of this application and thus facilitate understanding of one or more embodiments of the invention, the foregoing descriptions of the embodiments of this application sometimes combine multiple features into a single embodiment, figure, or description thereof. However, this disclosure method does not mean that the subject matter of this application requires more features than those recited in the claims. In fact, an embodiment may have fewer features than all of the features of a single embodiment disclosed above.

[0057] In some embodiments, numbers are used to describe the quantity of components and attributes. It should be understood that such numbers used in the description of the embodiments are modified by the modifiers "about", "approximately" or "substantially" in some examples. Unless otherwise stated, "about", "approximately" or "substantially" indicate that the numbers are allowed to vary by ±20%. Accordingly, in some embodiments, the numerical parameters used in the description and claims are approximate values, which may change according to the required features of individual embodiments. In some embodiments, the numerical parameters should take into account the specified significant digits and adopt the general method of retaining digits. Although the numerical domains and parameters used to confirm the breadth of their range in some embodiments of the present application are approximate values, in specific embodiments, the settings of such numerical values ​​are as accurate as possible within the feasible range.

[0058] Although the present application has been described with reference to the current specific embodiments, ordinary technicians in this technical field should recognize that the above embodiments are only used to illustrate the present application, and various equivalent changes or substitutions can be made without departing from the spirit of the present application. Therefore, as long as the changes and modifications to the above embodiments are within the scope of the essential spirit of the present application, they will fall within the scope of the claims of the present application.

Claims

1. A four-way laser system, comprising: A laser configured to output four laser beams; A first reflector assembly, comprising four first reflectors, each of which is respectively aligned with a corresponding laser beam among the four laser beams, and each of which is configured at an angle relative to the corresponding laser beam so as to reflect the corresponding laser beam through an optical axis of the four-way laser system; as well as A second reflector assembly is arranged between the laser and the first reflector assembly, the second reflector assembly includes at least two mirror seats and four second reflectors arranged opposite to the four first reflectors, the four second reflectors are respectively arranged on the at least two mirror seats, the at least two mirror seats can be relatively independently translated, so that each second reflector can be translated to the optical axis, wherein the distance between each second reflector and the corresponding first reflector is set to be able to receive the laser beam reflected by the corresponding first reflector on the optical axis, and the angle of each second reflector relative to the reflected laser beam is configured to be suitable for reflecting the laser beam reflected by the corresponding first reflector along the optical axis.

2. The four-way laser system according to claim 1, characterized in that: The invention also includes a controller configured to control the laser to selectively output a laser beam, and control the second reflector assembly to translate one of the mirror seats so that the corresponding second reflector is translated to the optical axis.

3. The four-way laser system according to claim 1 or 2, characterized in that: The laser comprises a resonant cavity and an excitation source located in the resonant cavity, and the resonant cavity comprises four-way total reflection mirror components and four-way output mirror components which are arranged opposite to each other.

4. The four-way laser system according to any one of claims 1 to 3, characterized in that: The first reflector assembly also includes a bracket, four wedge plates and four bases, the four wedge plates are arranged on the bracket and have inclined surfaces facing the second reflector assembly, the four bases are respectively arranged on the inclined surfaces of the four wedge plates, and the four first reflectors are respectively arranged on the four bases.

5. The four-way laser system according to any one of claims 1 to 4, characterized in that: The first reflecting mirror assembly has a first optical axis hole located on the optical axis to allow the laser beams reflected by the second reflecting mirrors to pass through.

6. The four-way laser system according to any one of claims 1 to 5, characterized in that: Each second reflector is arranged in parallel with the corresponding first reflector.

7. The four-way laser system according to any one of claims 1 to 6, characterized in that: The at least two mirror mounts include a first mirror mount and a second mirror mount which are arranged one behind the other in the propagation direction of the laser beam.

8. The four-way laser system according to any one of claims 1 to 7, characterized in that: The second reflector assembly includes a first linear drive mechanism and a second linear drive mechanism, and the first mirror seat and the second mirror seat are respectively arranged on the first linear drive mechanism and the second linear drive mechanism.

9. The four-way laser system according to any one of claims 1 to 8, characterized in that: Also includes: A coupling lens, disposed on the back side of the first reflector assembly opposite to the light emitting side and located on the optical axis to receive each laser beam reflected by the second reflector; as well as The output optical fiber is connected to the light output side of the coupling lens.

10. The four-way laser system according to any one of claims 1 to 9, characterized in that: The four laser beams define four vertices of a square, the four first reflecting mirrors define four vertices of another square, and the four second reflecting mirrors define four vertices of a rhombus.

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