Variable light spot lens structure and laser device

Abstract

A variable light spot lens structure and a laser device. The variable light spot lens structure comprises a fixing module (10) and multiple replacement modules (20); the fixing module (10) comprises a fixing base (11), a light source (12) arranged in the fixing base (11), a fast-axis compression mirror arranged on a light exit side of the light source (12), and a compression unit (13) fixed on the fixing base (11) and located on a light exit side of the fast-axis compression mirror; the multiple replacement modules (20) are replaceably arranged on a light exit side of the fixing module (10), and each replacement module (20) comprises an optical head (21) and a shaping unit; the optical head (21) of each replacement module (20) is detachably connected to the fixing base (11) of the fixing module (10); a light beam emitted by the light source (12) undergoes fast-axis compression by the fast-axis compression mirror and compression by the compression unit (13) and then is incident to the replacement modules (20), and exits after being shaped by the shaping units of the replacement modules (20); and light spots on a receiving surface that are obtained by means of light beams exiting from any two replacement modules (20) have different sizes. Such a variable light spot lens structure can output multiple small-size light spots of different specifications, and improve the application flexibility of a laser module.

Description

Variable spot lens structure and laser equipment Technical Field

[0001] The utility model relates to the technical field of optics, and in particular to a variable spot lens structure and laser equipment. Background Art

[0002] High-power semiconductor lasers have the advantages of small size, light weight, high efficiency and long life. They have been widely used in industrial processing, cladding, pumping and medical fields, and have become one of the core devices with rapid development, many achievements, wide discipline penetration and a wide range of applications in the new century.

[0003] In the field of medical aesthetics, lasers are primarily used for freckle removal and hair removal. However, on the one hand, the lens structure used in existing laser equipment can only output a fixed-size light spot, and the spot size cannot be adjusted. This significantly limits the application of semiconductor laser equipment. On the other hand, existing laser equipment struggles to produce small-sized light spots. This significantly restricts the application scenarios of laser equipment, especially for freckle removal and hair removal.

[0004] Utility Model Content

[0005] The purpose of the utility model is to provide a variable spot lens structure and a laser device, which can output a variety of small-sized spots of different specifications, thereby improving the application flexibility of the laser module.

[0006] The embodiment of the present utility model is achieved as follows:

[0007] In one aspect, the present invention provides a variable spot lens structure, comprising a fixed module and a plurality of replacement modules matched with the fixed module; the fixed module comprises a fixed seat, a light source disposed within the fixed seat, a fast-axis compression mirror disposed on the light-emitting side of the light source, and a compression unit fixed to the fixed seat and located on the light-emitting side of the fast-axis compression mirror; the plurality of replacement modules are used to replace the light-emitting side disposed on the fixed module, and each replacement module comprises an optical head and a shaping unit disposed within the optical head; the optical head of each replacement module is detachably connected to the fixed seat of the fixed module; the light beam emitted by the light source is fast-axis compressed by the fast-axis compression mirror and the compression unit, and then incident on the replacement module, and is shaped by the shaping unit of the replacement module before being emitted; wherein the light beams emitted by any two replacement modules have different spot sizes on the receiving surface. This variable spot lens structure can output a variety of small-sized light spots of different specifications, thereby improving the application flexibility of the laser module.

[0008] Optionally, the compression unit includes lenses or lens groups arranged in sequence along the optical axis.

[0009] Optionally, the fixing module further includes a first pressing frame, which is provided on a side of the fixing base close to the replacement module and is used to fix the compression unit on the fixing base.

[0010] Optionally, the fixing base includes a mounting base and a mounting head connected to the mounting base, the light source is arranged in the mounting base, the compression unit is fixed on the mounting base, and the optical head of the replacement module and the mounting head are detachably connected.

[0011] Optionally, the fixing module further includes a semiconductor cooler, the mounting head is connected to the mounting seat via the semiconductor cooler, and the hot surface of the semiconductor cooler is close to the mounting seat, and the cold surface thereof is close to the mounting head.

[0012] Optionally, a cooling channel is provided in the mounting seat.

[0013] Optionally, the shaping unit includes at least one optical lens, and the replacement module further includes a second pressing frame, which is arranged on a side of the replacement module close to the fixing module and is used to fix the optical lens in the optical head.

[0014] Optionally, the shaping unit includes a light guiding element.

[0015] Optionally, the light guide element is a light guide column, which is disposed in the optical head and located on the light exit side of the optical lens; the light beam emitted from the optical lens can be emitted after passing through the light guide column.

[0016] Optionally, the light-guiding element is a reflective cavity, which is provided in the optical head, and the light beam emitted from the fixed module can be reflected by the reflective cavity and then emitted.

[0017] Optionally, the fixing seat and the optical head are connected by a hinge; or, the fixing seat and the optical head are threadedly connected by screws; or, a guide groove is provided on the fixing seat, and a guide rail adapted to the guide groove is provided on the optical head, and the guide rail can be slidably inserted into the guide groove; or, a first matching portion is provided on the fixing seat, and a second matching portion is provided on the optical head, and the first matching portion and the second matching portion are interlocked with each other; or, a first magnet is provided on a side of the fixing seat close to the optical head, and a second magnet is provided on a side of the optical head close to the fixing seat, and the first magnet and the second magnet can attract each other; or, a first thread is provided on the fixing seat, and a second thread is provided on the optical head, and the first thread and the second thread are threadedly connected.

[0018] Optionally, two locating pins are provided on the surface of the optical head close to the fixing seat, and two locating holes are provided on the surface of the fixing seat close to the optical head, and the two locating pins and the two locating holes correspond one to one; wherein the diameters of the two locating pins are different, or the two locating pins are asymmetrically arranged about the center of the optical head.

[0019] Optionally, the variable spot lens structure further includes an identification module and a controller; the identification module is used to identify the type of the replacement module and transmit the information to the controller, and the controller is used to control the light output energy of the light source according to the type of the replacement module.

[0020] Optionally, the identification module includes a plurality of probes arranged on a side of the fixed seat close to the optical head, and the optical head of each replacement module is provided with a plurality of probe holes corresponding to the probes one by one; when the optical heads of different replacement modules are connected to the fixed seat of the fixed module, the two different probes can be connected to each other and send identification signals to the controller. The identification signals of different replacement modules are different when connected to the fixed module, and the controller can determine the type of replacement module connected to the fixed module based on the identification signal.

[0021] Optionally, the identification module includes a pressure sensor arranged on a side of the fixed seat close to the optical head, and a different mating part is provided on the optical head of each replacement module; when the optical head of the replacement module is connected to the fixed seat of the fixed module, the mating part presses the pressure sensor, and the pressure sensor can send a corresponding pressure signal to the controller. Different replacement modules have different pressure signals when connected to the fixed module, and the controller can determine the type of replacement module connected to the fixed module based on the pressure signal.

[0022] Optionally, the identification module includes a signal generator and a detector arranged on a fixed seat, and a reflector is provided on the optical head of each replacement module, and the distance from the reflector of each replacement module to the fixed seat is different; when the optical head of the replacement module is connected to the fixed seat of the fixed module, the signal generator transmits a signal to the reflector and the signal is reflected by the reflector and then received by the detector, and the controller is used to obtain the detection signal of the detector and determine the type of replacement module connected to the fixed module based on the detection signal.

[0023] Another aspect of the present invention provides a laser device, which includes the above-mentioned variable spot lens structure.

[0024] The beneficial effects of the utility model include:

[0025] The variable spot lens structure provided in the present application includes a fixed module and multiple replacement modules matching the fixed module; the fixed module includes a fixed seat, a light source arranged in the fixed seat, a fast-axis compression mirror arranged on the light-emitting side of the light source, and a compression unit fixed on the fixed seat and located on the light-emitting side of the fast-axis compression mirror; the multiple replacement modules are used to replace the light-emitting side arranged on the fixed module, and each replacement module includes an optical head and a shaping unit arranged in the optical head; the optical head of each replacement module can be detachably connected to the fixed seat of the fixed module; the light beam emitted by the light source is incident on the replacement module after fast-axis compression by the fast-axis compression mirror and compression by the compression unit, and is shaped by the shaping unit of the replacement module before being emitted; wherein, the size of the light spot obtained on the receiving surface by the light beams emitted by any two replacement modules is different. The present application equips the fixed module with a plurality of different replacement modules, so that a set of variable spot lens structure can realize the output of light spots of various specifications and sizes, which can meet the various different needs of users and has a better market application prospect. In addition, compared with the existing laser equipment that can only output a light spot of one size, the present application has better flexibility. In addition, a fast axis compression mirror and a compression unit are provided in the fixed module of the present application. In this way, the present application can reduce the divergence angle of the light beam emitted by the light source 12 in the fast axis direction in the fixed module, so that the fast and slow axis divergence angles are similar. While making the fast and slow axis divergence angles similar, the present application also compresses the light beam through the compression unit, thereby obtaining a small-sized light spot on the receiving surface. Compared with setting the compression unit in the replacement module, the number of optical elements of the variable spot lens structure can be further reduced, the overall volume of the variable spot lens structure can be reduced, and the cost can be reduced. In this way, the variable spot lens structure provided by the present application can output a variety of small-sized light spots of different specifications, thereby improving the application flexibility of the laser module. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying any creative work.

[0027] FIG1 is a schematic diagram of a variable spot lens structure according to an embodiment of the present invention;

[0028] FIG2 is a second structural diagram of a variable spot lens structure provided by an embodiment of the present invention;

[0029] FIG3 is a third structural diagram of a variable spot lens structure provided by an embodiment of the present invention;

[0030] FIG4 is a schematic structural diagram of a fixing module provided in an embodiment of the present invention;

[0031] FIG5 is a schematic diagram of a structure of a replacement module according to an embodiment of the present invention;

[0032] FIG6 is an axonometric view of FIG5;

[0033] FIG7 is a second structural diagram of a replacement module provided in an embodiment of the present invention;

[0034] FIG8 is a schematic structural diagram of a replacement module with a reflective cavity;

[0035] FIG9 is an axonometric view of FIG7 ;

[0036] FIG10 is a third structural diagram of a replacement module provided in an embodiment of the present invention;

[0037] FIG11 is an axonometric view of FIG10 ;

[0038] FIG12 is a schematic diagram of the structure of an optical head provided by an embodiment of the present invention;

[0039] FIG13 is a second schematic structural diagram of an optical head provided by an embodiment of the present utility model;

[0040] FIG14 is a schematic structural diagram of a mounting head provided in an embodiment of the present invention;

[0041] FIG15 is a schematic structural diagram of an optical head provided in an embodiment of the present utility model.

[0042] Icons: 10-fixed module; 11-fixed seat; 111-mounting seat; 112-mounting head; 113-positioning hole; 12-light source; 13-compression unit; 131-positive lens; 14-first spacer; 15-first pressure frame; 16-semiconductor refrigerator; 20-replacement module; 21-optical head; 211-positioning pin; 212-probe hole; 221-optical lens; 222-light guide column; 223-reflection cavity; 23-second pressure frame; 24-second spacer; 25-window; 31-probe. DETAILED DESCRIPTION

[0043] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0044] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but rather merely represents selected embodiments of the present invention. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without creative effort are also within the scope of protection of the present invention.

[0045] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.

[0046] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer" and the like, indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships in which the utility model product is typically placed when in use. These terms are intended solely to facilitate the description of this utility model and to simplify the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third," etc., are used solely to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0047] Furthermore, terms such as "horizontal" and "vertical" do not necessarily mean that a component must be absolutely horizontal or overhanging, but rather that it can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but rather that it can be slightly tilted.

[0048] It should also be noted that, in the description of this utility model, unless otherwise expressly specified or limited, the terms "disposed," "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0049] 1 to 4 , this embodiment provides a variable spot lens structure, which includes a fixed module 10 and a plurality of replacement modules 20 associated with the fixed module 10. The fixed module 10 includes a fixed seat 11, a light source 12 disposed within the fixed seat 11, a fast-axis compression mirror disposed on the light-emitting side of the light source 12, and a compression unit 13 fixed to the fixed seat 11 and located on the light-emitting side of the fast-axis compression mirror. The plurality of replacement modules 20 are used to replace the light-emitting side of the fixed module 10, and each replacement module 20 includes an optical head 21 and a shaping unit disposed within the optical head 21. The optical head 21 of each replacement module 20 is detachably connected to the fixed seat 11 of the fixed module 10. The light beam emitted by the light source 12 is fast-axis compressed by the fast-axis compression mirror and compressed by the compression unit 13, then enters the replacement module 20 and is shaped by the shaping unit of the replacement module 20 before being emitted. The light beams emitted by any two replacement modules 20 have different spot sizes on the receiving surface. The variable spot lens structure can output a variety of small-size spots of different specifications, improving the application flexibility of the laser module.

[0050] It should be noted that, first, referring to Figures 1 and 2 , the variable spot lens structure provided in this application includes a fixed module 10 and multiple replacement modules 20. Each of the multiple replacement modules 20 can be used in conjunction with the fixed module 10, that is, the multiple replacement modules 20 are respectively used in conjunction with the fixed module 10. For example, the first replacement module 20 can be used in conjunction with the fixed module 10, the second replacement module 20 can also be used in conjunction with the fixed module 10, and so on (and the same applies to the other replacement modules 20).

[0051] In this embodiment, each replacement module 20 can be detachably connected to the fixed module 10. In this way, the user can select a suitable replacement module 20 to be installed and matched with the fixed module 10 according to needs, thereby realizing light spot output. When light spots of other sizes need to be output, the current replacement module 20 that is matched with the fixed module 10 can be removed, and then the replacement module 20 that can output the corresponding light spot size can be detachably installed on the fixed module 10.

[0052] Furthermore, it should be noted that in this embodiment, the spot sizes of the light beams emitted after passing through any two replacement modules 20 on the receiving surface are different. For example, in the case where the multiple replacement modules 20 include a first replacement module 20 and a second replacement module 20, when the first replacement module 20 is installed on the fixed module 10, a first light spot is obtained on the receiving surface, while when the second replacement module 20 is installed on the fixed module 10, a second light spot is obtained on the receiving surface. The first and second light spots have different sizes.

[0053] The present application equips the fixed module 10 with a plurality of different replacement modules 20. In this way, a set of variable spot lens structures can achieve the output of spots of various specifications and sizes, which can meet the various different needs of users and has a better market application prospect. Compared with the existing laser equipment that can only output a spot of one size, the present application is more flexible.

[0054] Second, please refer to Figures 3 and 4. The fixed module 10 includes a fixed seat 11, a light source 12, a fast-axis compression mirror, and a compression unit 13. Among them, the light source 12 is arranged in the fixed seat 11, and the fast-axis compression mirror is arranged on the light-emitting side of the light source 12, which is used to compress the light beam in the fast-axis direction to reduce the difference between the divergence angle of the light beam emitted by the light source 12 in the fast-axis direction and the divergence angle in the slow-axis direction; the compression unit 13 is fixed on the fixed seat 11, and the light beam emitted by the light source 12 can be incident on the compression unit 13. The compression unit 13 is used to compress the light beam emitted by the light source 12 before emitting it. In this way, the light beam emitted after passing through the fixed module 10 can be compressed to a certain extent. In this way, the light spot obtained on the receiving surface after passing through the replacement module 20 can be compressed. Therefore, the light spot size obtained on the receiving surface can be reduced. In this way, a small-sized light spot can be output through the variable spot lens structure provided by the present application.

[0055] The present application does not limit the form of the optical element of the compression unit 13. For example, the compression unit 13 may optionally include a lens or lens group arranged in sequence along the optical axis. The lens may be a single positive lens 131 or two positive lenses 131. For example, when the compression unit 13 includes two positive lenses 131, the fixing module 10 further includes a first spacer 14, which is embedded in the first accommodating cavity of the fixing base 11 and located between the two positive lenses 131 to space the two positive lenses 131 apart.

[0056] The fact that the compression unit 13 includes two positive lenses 131 is merely an example provided in the present application and does not constitute a specific limitation on the compression unit 13 of the present application. In other embodiments, the compression unit 13 may include only one positive lens 131. Of course, when the compression unit 13 includes only one positive lens 131, the first spacer 14 is not required.

[0057] When the compression unit 13 includes two positive lenses 131, in order to achieve optical isolation of the two positive lenses 131, in this embodiment, a first spacer ring 14 is specially provided between the two positive lenses 131. The structural form of the first spacer ring 14 is not specifically limited in this application, as long as it can isolate the two positive lenses 131.

[0058] Third, the replacement module 20 includes multiple, each replacement module 20 includes an optical head 21 and a shaping unit arranged in the optical head 21, wherein the optical head 21 and the fixing seat 11 of the fixing module 10 can be detachably connected, and the shaping unit is used to shape the light beam emitted from the fixing module 10 and then emit it.

[0059] This application does not impose any restrictions on the form and function of the optical elements of the shaping unit within the replacement module 20. The optical elements of the shaping unit of each replacement module 20 can be different or the same (when the optical elements are equivalent, the specific parameters such as the surface shape of the same optical elements need to be different), as long as the spot size obtained on the receiving surface after passing through the shaping units of different replacement modules 20 is different.

[0060] In this embodiment, the light beam emitted by the light source 12 is compressed in the fast axis direction by the fast axis compression mirror and the compression unit 13, and then enters the replacement module 20 that cooperates with the fixed module 10, and is shaped by the shaping unit of the replacement module 20 before being emitted; wherein, the sizes of the light spots obtained on the receiving surface by the light beams emitted by any two replacement modules 20 are different.

[0061] To summarize, the variable spot lens structure provided in the present application includes a fixed module 10 and a plurality of replacement modules 20 matched with the fixed module 10; the fixed module 10 includes a fixed seat 11, a light source 12 arranged in the fixed seat 11, and a compression unit 13 fixed on the fixed seat 11 and located on the light-emitting side of the light source 12; the plurality of replacement modules 20 are used to replace the light-emitting side of the fixed module 10, and each replacement module 20 includes an optical head 21 and a shaping unit arranged in the optical head 21; the optical head 21 of each replacement module 20 can be detachably connected to the fixed seat 11 of the fixed module 10; the light beam emitted by the light source 12 is compressed by the compression unit 13 and then incident on the replacement module 20, and is shaped by the shaping unit of the replacement module 20 and then emitted; wherein, the size of the light spot obtained on the receiving surface by the light beams emitted by any two replacement modules 20 is different. The present application equips the fixed module 10 with a plurality of different replacement modules 20, so that a set of variable spot lens structures can achieve the output of light spots of various specifications and sizes, which can meet the various different needs of users and has a good market application prospect. In addition, compared with the existing laser equipment that can only output a light spot of one size, the present application has better flexibility. In addition, the fixed module 10 of the present application is provided with a fast axis compression mirror and a compression unit 13. In this way, the present application can reduce the divergence angle of the light beam emitted by the light source 12 in the fast axis direction in the fixed module 10, so that the fast and slow axis divergence angles are similar. While making the fast and slow axis divergence angles similar, the present application also compresses the light beam through the compression unit 13, thereby obtaining a small-sized light spot on the receiving surface. Compared with setting the compression unit 13 in the replacement module 20, the number of optical elements of the variable spot lens structure can be further reduced, the overall volume of the variable spot lens structure can be reduced, and the cost can be reduced. In this way, the variable spot lens structure provided by the present application can output a variety of small-sized light spots of different specifications, thereby improving the application flexibility of the laser module.

[0062] To facilitate fixing the compression unit 13 on the fixing seat 11, optionally, please refer to Figure 4, the fixing module 10 also includes a first pressing frame 15, which is arranged on the side of the fixing seat 11 close to the replacement module 20 and is used to fix the compression unit 13 on the fixing seat 11.

[0063] Please refer to Figures 3 and 4. Optionally, the above-mentioned fixing seat 11 includes a mounting seat 111 and a mounting head 112 connected to the mounting seat 111. The light source 12 is arranged in the mounting seat 111, the compression unit 13 is fixed on the mounting seat 111, and the optical head 21 of the replacement module 20 and the mounting head 112 are detachably connected.

[0064] In this embodiment, a cooling channel is provided in the mounting base 111. In this way, the mounting base 111 can cool the light source 12 mounted therein, thereby reducing the operating temperature of the entire structure.

[0065] In addition, the fixing module 10 may further include a semiconductor cooler 16 , through which the mounting head 112 is connected to the mounting seat 111 , with the hot surface of the semiconductor cooler 16 close to the mounting seat 111 and the cold surface close to the mounting head 112 .

[0066] When compression unit 13 includes two positive lenses 131, they are mounted on mounting base 111, with a first spacer 14 positioned between them to ensure optical separation. Finally, a first pressing frame 15 and screws secure the lens to mounting base 111. The semiconductor cooler 16 and mounting head 112 are secured to mounting base 111 via screws. The hot surface of semiconductor cooler 16 rests against mounting base 111, dissipating heat through the cooling channels of mounting base 111. The cold surface of semiconductor cooler 16 faces outward, transferring the cooling effect to the light outlet. This allows the lens to contact the skin during laser treatment or cosmetic procedures. Thus, when this variable spot lens structure is applied to laser hair removal, it can achieve the desired effect of freezing point hair removal.

[0067] Please refer to Figures 5 to 11. In this embodiment, the above-mentioned shaping unit includes at least one optical lens 221, and the replacement module 20 also includes a second pressure frame 23. The second pressure frame 23 is arranged on a side of the replacement module 20 close to the fixing module 10, and is used to fix the optical lens 221 in the optical head 21.

[0068] The function of the second pressing frame 23 is the same as that of the first pressing frame 15, and this application will not repeat the description here. In addition, this application does not limit the optical function of the optical lens 221, and those skilled in the art can determine it according to actual needs, for example, it can be a homogenizing element.

[0069] For example, optionally, as shown in Figures 10 and 11, the above-mentioned optical lens 221 includes at least two, and the replacement module 20 also includes a second spacer 24, which is embedded in the second accommodating cavity of the optical head 21 and is located between two adjacent optical lenses 221 so that the two adjacent optical lenses 221 are arranged at intervals.

[0070] It should be noted that in the first feasible embodiment, as shown in Figure 10, the optical lenses 221 may include only two, and the replacement module 20 may also include a window piece 25 arranged at the light outlet of the replacement module 20. In this way, a second spacer ring 24 can be set between the two optical lenses 221, and a second spacer ring 24 can also be set between the window piece 25 and the optical lens 221 close to it.

[0071] For another example, in a second feasible embodiment, as shown in Figures 5 and 6, the above-mentioned optical lens 221 may include three, and the replacement module 20 may further include a window piece 25 arranged at the light outlet of the replacement module 20. As shown in Figure 5, when the optical lens 221 includes two, a second spacer ring 24 may be arranged between the two optical lenses 221, and a second spacer ring 24 may also be arranged between the window piece 25 and the optical lens 221 close to it.

[0072] Optionally, the shaping unit includes a light guide element. As shown in Figures 7 and 9 , the light guide element can be a light guide column 222 (i.e., in addition to including at least one optical lens 221, a light guide column 222 can also be included). The light guide column 222 is disposed within the optical head 21 and is located on the light output side of the optical lens 221. The light beam emitted from the optical lens 221 can pass through the light guide column 222 and then be emitted.

[0073] Alternatively, as shown in FIG8 , the light guide element may also be a reflective cavity 223 , which is disposed in the optical head 21 , and the light beam emitted from the fixing module 10 can be reflected by the reflective cavity 223 and then emitted.

[0074] It should be noted that the above methods are only a few examples of the shaping unit of the replacement module 20 given in this application (i.e., including at least one optical lens 221, or, on the basis of including at least one optical lens 221, also including a light-guiding element), and are not specific limitations of this application. Those skilled in the art can set the shaping unit in the replacement module 20 according to actual needs.

[0075] In addition, it should be noted that the fixing seat 11 of the fixing module 10 and the optical head 21 of the replacement module 20 of the present application are detachably connected, which can be achieved by any of the following methods:

[0076] The fixing seat 11 and the optical head 21 are connected by a hinge; or, the fixing seat 11 and the optical head 21 are screwed together; or, a guide groove is provided on the fixing seat 11, and a guide rail adapted to the guide groove is provided on the optical head 21, and the guide rail can be slidably inserted into the guide groove; or, a first matching portion is provided on the fixing seat 11, and a second matching portion is provided on the optical head 21, and the first matching portion and the second matching portion are interlocked with each other; or, a first magnet is provided on a side of the fixing seat 11 close to the optical head 21, and a second magnet is provided on a side of the optical head 21 close to the fixing seat 11, and the first magnet and the second magnet can attract each other; or, a first thread is provided on the fixing seat 11, and a second thread is provided on the optical head 21, and the first thread and the second thread are threadedly connected.

[0077] Please refer to Figures 12 and 13. Optionally, two positioning pins 211 are provided on the surface of the optical head 21 close to the fixing base 11, and two positioning holes 113 are provided on the surface of the fixing base 11 close to the optical head 21. The two positioning pins 211 and the two positioning holes 113 correspond one to one; wherein, the diameters of the two positioning pins 211 are different, or the two positioning pins 211 are asymmetrically arranged with respect to the center of the optical head 21.

[0078] The present application sets two positioning pins 211 on the optical head 21 and correspondingly sets two positioning holes 113 on the fixing seat 11, and sets the diameters of the two positioning pins 211 to be different, or sets the two positioning pins 211 to be asymmetric about the center of the optical head 21. In this way, when the optical head 21 and the fixing seat 11 are detachably connected, an anti-fouling effect can be achieved to avoid reverse installation.

[0079] Of course, the positions of the positioning pins 211 and the positioning holes 113 can also be interchanged, that is, two positioning holes 113 are provided on the optical head 21 , and two positioning pins 211 are correspondingly provided on the fixing base 11 .

[0080] Furthermore, in this embodiment, in order to facilitate controlling the light output energy of the light source 12 according to the type of the replacement module 20, thereby making the energy of the obtained light spot controllable, in this embodiment, optionally, the variable spot lens structure further includes an identification module and a controller; the identification module is used to identify the type of the replacement module 20 and transmit the information to the controller, and the controller is used to control the light output energy of the light source 12 according to the type of the replacement module 20.

[0081] It should be noted that the controller can control the light output energy of the light source 12 according to the type of replacement module 20 by controlling the replacement of light sources 12 with different energy outputs. That is, the fixed module 10 can be provided with multiple light sources 12, each light source 12 outputting a different energy beam. The controller can control the replacement of the light source 12 corresponding to the replacement module 20 currently mated with the fixed module 10 (i.e., drive the light source 12 corresponding to the replacement module 20 to be installed in the fixed seat 11).

[0082] The above identification module can be implemented in the following ways:

[0083] For example, in the first feasible method, please refer to Figures 14 and 15, the identification module includes a plurality of probes 31 arranged on the side of the fixed base 11 close to the optical head 21, and the optical head 21 of each replacement module 20 is provided with a plurality of probe holes 212 corresponding to the probes 31 one by one; when the optical heads 21 of different replacement modules 20 are connected to the fixed base 11 of the fixed module 10, the two different probes 31 can be connected to each other and send identification signals to the controller, and the identification signals of different replacement modules 20 are different when connected to the fixed module 10, and the controller can determine the type of replacement module 20 connected to the fixed module 10 based on the identification signal.

[0084] It should be noted that a number of probes 31 are distributed on the fixing seat 11, which are elastic and numbered in sequence. When the replacement module 20 and the fixed module 10 are installed, it is ensured that only two probes 31 are inserted into the two probe holes 212 each time, and the two probes 31 are turned on, and the corresponding positions of the remaining probes 31 are left open or placed with insulating materials to make them non-conductive. In this way, replacement modules 20 of different specifications can turn on probes 31 with different numbers, so that the system can recognize different signals, thereby outputting different laser light source 12 module energies.

[0085] When different replacement modules 20 and fixed modules 10 are installed, the two probes 31 that are turned on are different (for example, when the first replacement module 20 is installed on the fixed module 10, the first probe and the second probe may be turned on; when the second replacement module 20 is installed on the module, the second probe and the third probe may be turned on). In this way, the controller can determine the type of the current replacement module 20 according to the conduction state, thereby controlling the light output energy of the light source 12.

[0086] In a second feasible method, the identification module includes a pressure sensor arranged on a side of the fixing seat 11 close to the optical head 21, and a different mating part is provided on the optical head 21 of each replacement module 20; when the optical head 21 of the replacement module 20 is connected to the fixing seat 11 of the fixed module 10, the mating part presses the pressure sensor, and the pressure sensor can send a corresponding pressure signal to the controller. Different replacement modules 20 have different pressure signals when connected to the fixed module 10, and the controller can determine the type of replacement module 20 connected to the fixed module 10 based on the pressure signal.

[0087] That is, in addition to using the above-mentioned circuit conduction principle to achieve the distinction of identification signals, a pressure sensor can also be installed in the fixed module 10, and different structures (i.e., matching parts) can be designed at the replacement end so that different pressure values ​​can be output when different models of replacement modules 20 are installed, thereby outputting different signals.

[0088] Exemplarily, the lengths of the mating portions of different replacement modules 20 along the first direction may be different, and the first direction is the arrangement direction of the replacement module 20 and the fixing module 10 .

[0089] In a third feasible method, the identification module includes a signal generator and a detector arranged on the fixed seat 11, and a reflector is provided on the optical head 21 of each replacement module 20, and the distance from the reflector of each replacement module 20 to the fixed seat 11 is different; when the optical head 21 of the replacement module 20 is connected to the fixed seat 11 of the fixed module 10, the signal generator transmits a signal to the reflector, which is reflected by the reflector and then received by the detector. The controller is used to obtain the detection signal of the detector and determine the type of replacement module 20 connected to the fixed module 10 based on the detection signal.

[0090] That is, non-contact detection signals can also be used. A signal generator and a detector are installed on the fixed module 10, and a reflector is installed at the position of the signal generator corresponding to the replacement module 20, so that detectors at different positions can receive signals and thus identify the model of the replacement module 20.

[0091] Another aspect of the present invention provides a laser device, which includes the above-mentioned variable spot lens structure. Since the specific structure and beneficial effects of the above-mentioned variable spot lens structure have been described in detail above, this application will not repeat them here.

[0092] The above description is merely an optional embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that the present invention is susceptible to various modifications and variations. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

[0093] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any appropriate manner without contradiction. In order to avoid unnecessary repetition, the present invention will not further describe various possible combinations.

Claims

1. A variable spot lens structure, characterized in that: The optical system comprises a fixed module and a plurality of replacement modules matched with the fixed module; the fixed module comprises a fixed seat, a light source disposed in the fixed seat, a fast-axis compression mirror disposed on the light-emitting side of the light source, and a compression unit fixed to the fixed seat and located on the light-emitting side of the fast-axis compression mirror; the plurality of replacement modules are used to replace the light-emitting side disposed on the fixed module, and each replacement module comprises an optical head and a shaping unit disposed in the optical head; The optical head of each replacement module can be detachably connected to the fixing seat of the fixing module; the light beam emitted by the light source is incident on the replacement module after being fast-axis compressed by the fast-axis compression mirror and compressed by the compression unit, and is shaped by the shaping unit of the replacement module before being emitted; wherein, the sizes of the light spots obtained on the receiving surface by the light beams emitted by any two replacement modules are different.

2. The variable spot lens structure according to claim 1, characterized in that: The compression unit includes lenses or lens groups arranged in sequence along the optical axis.

3. The variable spot lens structure according to claim 1 or 2, characterized in that: The fixing module further includes a first pressing frame, which is arranged on a side of the fixing base close to the replacement module and is used to fix the compression unit on the fixing base.

4. The variable spot lens structure according to claim 1, characterized in that: The fixing seat includes a mounting seat and a mounting head connected to the mounting seat, the light source is arranged in the mounting seat, the compression unit is fixed on the mounting seat, and the optical head of the replacement module and the mounting head are detachably connected.

5. The variable spot lens structure according to claim 4, characterized in that: The fixing module further includes a semiconductor cooler, the mounting head is connected to the mounting seat via the semiconductor cooler, and the hot surface of the semiconductor cooler is close to the mounting seat, and the cold surface thereof is close to the mounting head.

6. The variable spot lens structure according to claim 4, characterized in that: A cooling channel is provided in the mounting seat.

7. The variable spot lens structure according to claim 1, characterized in that: The shaping unit includes at least one optical lens, and the replacement module also includes a second pressing frame, which is arranged on a side of the replacement module close to the fixing module and is used to fix the optical lens in the optical head.

8. The variable spot lens structure according to claim 7, characterized in that: The shaping unit includes a light guiding element.

9. The variable spot lens structure according to claim 8, characterized in that: The light guide element is a light guide column, which is arranged in the optical head and located on the light output side of the optical lens; the light beam emitted from the optical lens can be emitted after passing through the light guide column.

10. The variable spot lens structure according to claim 8, characterized in that: The light guide element is a reflective cavity, which is provided in the optical head. The light beam emitted from the fixing module can be reflected by the reflective cavity and then emitted.

11. The variable spot lens structure according to claim 1 or 4, characterized in that: The fixing seat and the optical head are connected via a hinge; Alternatively, the fixing seat and the optical head are screwed together by screws; Alternatively, the fixing seat is provided with a guide groove, the optical head is provided with a guide rail adapted to the guide groove, and the guide rail can be slidably inserted into the guide groove; Alternatively, the fixing seat is provided with a first matching portion, the optical head is provided with a second matching portion, and the first matching portion and the second matching portion are buckled with each other; Alternatively, a first magnet is provided on a side of the fixing base close to the optical head, and a second magnet is provided on a side of the optical head close to the fixing base, and the first magnet and the second magnet are capable of attracting each other; Alternatively, the fixing seat is provided with a first thread, the optical head is provided with a second thread, and the first thread and the second thread are threadedly connected.

12. The variable spot lens structure according to claim 1, characterized in that: Two positioning pins are provided on the surface of the optical head close to the fixing seat, and two positioning holes are provided on the surface of the fixing seat close to the optical head, and the two positioning pins and the two positioning holes correspond one to one; wherein, the diameters of the two positioning pins are different, or the two positioning pins are asymmetrically arranged with respect to the center of the optical head.

13. The variable spot lens structure according to claim 1, characterized in that: The variable spot lens structure further includes an identification module and a controller; the identification module is used to identify the type of the replacement module and transmit the information to the controller, and the controller is used to control the light output energy of the light source according to the type of the replacement module.

14. The variable spot lens structure according to claim 13, characterized in that: The identification module includes a plurality of probes arranged on a side of the fixing seat close to the optical head, and the optical head of each replacement module is provided with a plurality of probe holes corresponding to the probes one by one; when the optical heads of different replacement modules are connected to the fixing seat of the fixed module, two different probes can be connected to each other and send identification signals to the controller, and the identification signals are different when different replacement modules are connected to the fixed module, and the controller can determine the type of the replacement module connected to the fixed module based on the identification signal.

15. The variable spot lens structure according to claim 13, characterized in that: The identification module includes a pressure sensor arranged on a side of the fixing seat close to the optical head, and each optical head of the replacement module is provided with a different mating part; when the optical head of the replacement module is connected to the fixing seat of the fixed module, the mating part presses the pressure sensor, and the pressure sensor can send a corresponding pressure signal to the controller. The pressure signals are different when different replacement modules are connected to the fixed module, and the controller can determine the type of the replacement module connected to the fixed module based on the pressure signal.

16. The variable spot lens structure according to claim 13, characterized in that: The identification module includes a signal generator and a detector arranged on the fixed seat. A reflector is provided on the optical head of each replacement module, and the distance between the reflector of each replacement module and the fixed seat is different. When the optical head of the replacement module is connected to the fixed seat of the fixed module, the signal generator transmits a signal to the reflector, which is reflected by the reflector and then received by the detector. The controller is used to obtain the detection signal of the detector and determine the type of the replacement module connected to the fixed module based on the detection signal.

17. A laser device, characterized in that: The variable spot lens structure comprises the structure described in any one of claims 1 to 16.

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