Laser treatment head

Abstract

The utility model provides a laser treatment head, relates to the technical field of laser equipment, and aims to solve the problems that the energy density cannot be influenced after the size of a light spot is changed and the working intensity is high because an operator needs to manually adjust the light-emitting energy density after selecting a proper size of the light spot in the conventional laser treatment head. The laser treatment head comprises a hand tool and a treatment head body which are sequentially arranged in the light path direction, the treatment head body comprises a shell, a concave lens and a convex lens, the shell is installed on the hand tool, the concave lens and the convex lens are sequentially arranged in the shell in the light path direction, the position of the concave lens is fixed, and the distance between the convex lens and the concave lens is adjustable. On the premise that the energy density is not changed, the purpose of changing the size of a light spot is achieved by adjusting the distance between the convex lens and the concave lens, the operation is simplified, and the labor intensity of an operator is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to laser equipment technical field, specifically, a kind of laser treatment head. BACKGROUND

[0002] At present, laser treatment is more and more in the application of oral cavity, skin beauty and other industries.For the laser treatment head on market, its structure mainly includes flat concave lens and diaphragm, wherein, the size of light spot can be adjusted by diaphragm to meet the use demand under different scenes.

[0003] However, due to the fixed laser emission angle, the size of the exit light spot of laser treatment head will only change with the change of distance, on this basis, although the size of exit light spot can be changed by increasing diaphragm, but part of laser is blocked by diaphragm, so that the light spot energy under the same distance becomes smaller. During the operation of using laser treatment head, different size of light spot is often used in a treatment process to achieve the purpose, which requires laser treatment head to have light spot size adjusting function. For the laser treatment head in prior art, adjusting the size of light spot when energy is certain will cause the change of energy density, and this change often causes that energy density is not suitable for treatment application, and even safety hazard may be caused. At this time, the operator needs to manually adjust the light energy density of equipment while selecting appropriate light spot size, which not only has high working intensity, but also is easy to make mistakes and cause safety hazard, and even other harm to patients may be caused. SUMMARY

[0004] The utility model aims at providing a kind of laser treatment head to solve the technical problem that the operator needs to manually adjust light energy density after selecting appropriate light spot size in the prior art, so as to ensure that energy density is not affected after the size of light spot changes, resulting in high working intensity.

[0005] The laser treatment head provided by the utility model comprises a hand tool and a treatment head body arranged in sequence along an optical path direction, wherein the treatment head body comprises an outer shell, a concave lens and a convex lens, the outer shell is mounted on the hand tool, the concave lens and the convex lens are arranged in sequence inside the outer shell along the optical path direction, the position of the concave lens is fixed, and the distance between the convex lens and the concave lens is adjustable.

[0006] Further, the concave lens is a flat concave lens, and the flat surface of the flat concave lens faces the hand tool.

[0007] Further, the convex lens is a flat convex lens, and the flat surface of the flat convex lens faces the flat concave lens.

[0008] Further, the convex lens is a double convex lens.

[0009] Further, the treatment head body further comprises a rotation sleeve and a moving sleeve, the rotation sleeve is rotationally arranged in the shell, and the plano-concave lens is arranged in the rotation sleeve; the moving sleeve is slidingly arranged in the shell, the plano-convex lens is arranged in the moving sleeve, and the moving sleeve is threadedly connected with the rotation sleeve; the shell is provided with an operation opening for rotating the rotation sleeve.

[0010] Further, the rotation sleeve is internally provided with a first step, the plano-concave lens is sleeved in the rotation sleeve, and the plane of the plano-concave lens abuts against the first step.

[0011] Further, the moving sleeve is internally provided with a second step, the plano-convex lens is sleeved in the moving sleeve, and the plane of the plano-convex lens abuts against the second step.

[0012] Further, the moving sleeve comprises a straight cylinder segment and a tapered segment arranged in sequence along the light path direction, wherein the straight cylinder segment is threadedly connected with the rotation sleeve, and the plano-convex lens is arranged in the straight cylinder segment; along the light path direction, the diameter of the tapered segment gradually increases.

[0013] Further, the rotation sleeve is provided with external threads, and the moving sleeve is provided with a threaded hole screwing with the external threads.

[0014] Further, the hand tool is in the shape of a long rod, and the outer surface of the hand tool is provided with a holding concave surface.

[0015] The laser treatment head brings the beneficial effects that:

[0016] The laser treatment head is arranged as above, so that the laser emitted by the hand tool enters the shell of the treatment head body and is emitted after the plano-concave lens and the plano-convex lens in sequence.

[0017] Since the position of the plano-concave lens is fixed, by adjusting the distance between the plano-convex lens and the plano-concave lens, when the sum of L1 and L2 is the focal length f, the light emitted by the treatment head body is collimated light, at this time, the distance between the laser treatment head and the treatment part can be moved at will by the hand tool, and the energy density of the light spot will not change; when the sum of L1 and L2 is less than the focal length f, divergent light will be obtained under the action of the plano-convex lens, since L2 < f-L1, by adjusting the position of the plano-convex lens relative to the plano-concave lens, the value of L2 is within the above range, so that the size of the light spot can be adjusted.

[0018] Therefore, the laser treatment head can change the spot size by adjusting the distance between the convex lens and the concave lens within a certain range without changing the energy density, which saves the complicated steps of manually adjusting the light energy density after selecting the appropriate spot size, simplifies the operation and reduces the labor intensity of the operator; and the distance between the convex lens and the concave lens can be adjusted to the set position to obtain the collimated light beam, so that the energy density of the spot does not change, at which time the hand tool can be fixed to the corresponding bracket at will, so that the operator does not need to hold it all the time, thereby making the use process more relaxed. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description are only embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor on the basis of the provided drawings.

[0020] Figure 1 The structure exploded view of the laser treatment head provided by the embodiment of the present application is provided.

[0021] Figure 2 The distance adjustment schematic view of the plano-concave lens and the plano-convex lens of the laser treatment head provided by the embodiment of the present application is provided.

[0022] Figure 3 The distance adjustment schematic view of the plano-concave lens and the plano-convex lens of the laser treatment head provided by the embodiment of the present application is provided.

[0023] Figure 4 The internal structure sectional view of the treatment head body of the laser treatment head provided by the embodiment of the present application is provided.

[0024] Explanation of reference signs:

[0025] 100-hand tool; 110-grip concave; 200-treatment head body; 210-outer shell; 220-plano-concave lens; 230-plano-convex lens; 240-rotation sleeve; 241-first step; 250-moving sleeve; 251-second step; 252-straight cylinder segment; 253-tapered segment. DETAILED DESCRIPTION

[0026] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific embodiments of the present application will be described in detail below with reference to the drawings. It should be understood that the specific embodiments described herein are only used to explain the present application and do not limit the present application.

[0027] Figure 1 A structure exploded view of the laser treatment head is provided for the present embodiment. As shown in Figure 1 , the present embodiment provides a laser treatment head, which comprises a handpiece 100 and a treatment head body 200 arranged in sequence along the light path direction.

[0028] Figure 2 One of the distance adjustment schematic diagrams of the plano-concave lens 220 and the plano-convex lens 230 of the laser treatment head provided for the present embodiment; Figure 3 Another distance adjustment schematic diagram of the plano-concave lens 220 and the plano-convex lens 230 of the laser treatment head provided for the present embodiment. Please continue to refer to Figure 1 , in combination with Figure 2 and Figure 3 , in the present embodiment, the treatment head body 200 comprises an outer shell 210, a concave lens and a convex lens, wherein the outer shell 210 is mounted on the handpiece 100, the concave lens and the convex lens are arranged in sequence inside the outer shell 210 along the light path direction, and the position of the concave lens is fixed, and the distance between the convex lens and the concave lens is adjustable.

[0029] The laser treatment head is set as described above, so that the laser emitted through the handpiece 100 enters the outer shell 210 of the treatment head body 200 and is emitted after passing through the concave lens and the convex lens in sequence. Please continue to refer to Figure 2 and Figure 3 , the distance between the light emitting end surface of the handpiece 100 and the central axis of the concave lens is denoted as L1, and the distance between the central axis of the concave lens and the central axis of the convex lens is denoted as L2.

[0030] Since the position of the concave lens is fixed, the distance between the convex lens and the concave lens is adjusted, as shown in Figure 2 , when the sum of L1 and L2 is the focal length f, the collimated light is emitted through the treatment head body 200, at this time, the distance between the laser treatment head and the treatment site can be moved at will through the handpiece 100, and the energy density of the light spot will not change; as shown in Figure 3 , when the sum of L1 and L2 is less than the focal length f, the divergent light will be obtained under the action of the convex lens, and since L2 < f-L1, the size of the light spot can be adjusted by adjusting the position of the convex lens relative to the concave lens so that the value of L2 is within the above range.

[0031] Therefore, the laser treatment head can change the spot size by adjusting the distance between the convex lens and the concave lens within a certain range without changing the energy density, which saves the cumbersome step of manually adjusting the light energy density after selecting the appropriate spot size, simplifies the operation, and reduces the labor intensity of the operator. The distance between the convex lens and the concave lens can be adjusted to a set position to obtain a collimated light beam, so that the energy density of the spot does not change. At this time, the hand tool 100 can be fixed to the corresponding support at will, so that the operator does not need to hold it all the time, thereby making the use process more relaxed.

[0032] Please continue to refer to Figure 2 and Figure 3 In the embodiment, the concave lens is a flat concave lens 220.

[0033] By setting the concave lens as a flat concave lens 220, not only the manufacturing cost of the concave lens is reduced, but also the concave lens is convenient to assemble and fix.

[0034] Please continue to refer to Figure 2 and Figure 3 In the embodiment, the convex lens is a flat convex lens 230.

[0035] By setting the convex lens as a flat convex lens 230, not only the manufacturing cost of the convex lens is reduced, but also the convex lens is convenient to assemble and fix.

[0036] It should be noted that in other embodiments, the convex lens can also be set as a double convex lens.

[0037] Figure 4 The internal structure of the treatment head body 200 of the laser treatment head provided in the embodiment is shown in a cross-sectional view. As shown in Figure 4 In the embodiment, the treatment head body 200 can also include a rotation sleeve 240 with two open ends and a movement sleeve 250 with two open ends. The rotation sleeve 240 is rotationally arranged in the inside of the shell 210, and the flat concave lens 220 is installed on the rotation sleeve 240. The movement sleeve 250 is slidingly arranged in the shell 210, the flat convex lens 230 is installed on the movement sleeve 250, and the movement sleeve 250 is threadedly connected with the rotation sleeve 240. The shell 210 is provided with an operation opening for rotating the rotation sleeve 240.

[0038] When it is needed to adjust the distance between the plano-convex lens 230 and the plano-concave lens 220, a rotating force can be applied to the rotating sleeve 240 through the operation opening of the shell 210 to rotate the rotating sleeve 240; in the process of rotating the rotating sleeve 240, since the moving sleeve 250 is threadedly connected with the rotating sleeve 240 and the moving sleeve 250 is slidingly installed in the shell 210, the rotating displacement of the rotating sleeve 240 is converted into the linear displacement of the moving sleeve 250 to drive the moving sleeve 250 to move relative to the shell 210, thereby achieving the purpose of moving the plano-convex lens 230.

[0039] This form of adjusting the distance between the plano-convex lens 230 and the plano-concave lens 220 by rotating the rotating sleeve 240 to move the moving sleeve 250 realizes power transmission through the screw cooperation between the rotating sleeve 240 and the moving sleeve 250, and has high adjustment accuracy.

[0040] It should be noted that in the embodiment, a plurality of adjustment holes can be arranged at intervals in the circumference of the rotating sleeve 240, so that the operator can insert into the corresponding adjustment hole through the operation opening to apply a torque to the rotating sleeve 240.

[0041] Please continue to refer to Figure 4 In the embodiment, the rotating sleeve 240 is internally provided with a first step 241, wherein the plano-concave lens 220 is sleeved into the rotating sleeve 240, and the plane of the plano-concave lens 220 abuts against the first step 241.

[0042] By arranging the first step 241 in the interior of the rotating sleeve 240, the plano-concave lens 220 can be limited when assembling the plano-concave lens 220, so as to ensure the installation accuracy of the plano-concave lens 220 in the rotating sleeve 240.

[0043] Please continue to refer to Figure 4 In the embodiment, the interior of the moving sleeve 250 is provided with a second step 251, wherein the plano-convex lens 230 is sleeved into the moving sleeve 250, and the plane of the plano-convex lens 230 abuts against the second step 251.

[0044] By arranging the second step 251 in the interior of the moving sleeve 250, the plano-convex lens 230 can be limited when assembling the plano-convex lens 230, so as to ensure the installation accuracy of the plano-convex lens 230 in the moving sleeve 250.

[0045] Please continue to refer to Figure 4 In the embodiment, the rotating sleeve 240 is provided with an external thread, and the moving sleeve 250 is provided with a threaded hole screwing with the external thread.

[0046] The setting not only realizes the threaded connection of the rotating sleeve 240 and the moving sleeve 250, but also makes the moving sleeve 250 located outside the rotating sleeve 240 at the connection with the rotating sleeve 240, thereby facilitating the sliding connection of the moving sleeve 250 and the shell 210.

[0047] Please continue to refer to Figure 4 In the embodiment, the moving sleeve 250 can include a straight cylinder segment 252 and a tapered segment 253 arranged in sequence along the light path direction, wherein the straight cylinder segment 252 is threadedly connected with the rotating sleeve 240, and the plano-convex lens 230 is installed on the straight cylinder segment 252; along the light path direction, the diameter of the tapered segment 253 gradually increases. That is, the threaded hole of the moving sleeve 250 is arranged on the straight cylinder segment 252.

[0048] By setting the moving sleeve 250 in the form of including the straight cylinder segment 252 and the tapered segment 253, on the one hand, the moving sleeve 250 is facilitated to be threadedly connected with the rotating sleeve 240 through the straight cylinder segment 252, and on the other hand, the light is emitted by the tapered segment 253, so that the laser is not shielded when being emitted at a divergence angle, thereby ensuring the light energy density.

[0049] In the embodiment, the relative sliding direction of the moving sleeve 250 and the shell 210 is the axial direction of the moving sleeve 250, and the moving sleeve 250 can be slidingly connected with the shell 210 through the straight cylinder segment 252.

[0050] Please continue to refer to Figure 1 In the embodiment, the hand tool 100 is in the form of a long rod, wherein the outer surface of the hand tool 100 is provided with a holding concave surface 110.

[0051] The structure of the hand tool 100 not only facilitates the hand operation of the operator, but also is simple in structure.

[0052] Although the utility model discloses as above, the utility model is not limited to this. Any person skilled in the art, without departing from the spirit and scope of the utility model, can make various changes and modifications, therefore the protection scope of the utility model should be the range limited by the claims.

[0053] Finally, it should be noted that, in this document, relational terms such as first and second, and the like can be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," "includes," "including" or any other variation thereof, are intended to cover a non-exclusive inclusion such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus. An element proceeded by "comprises... a" does not, without more constraints, exclude the existence of additional identical elements in the process, method, article, or apparatus that comprises the element.

[0054] In the above embodiments, the orientation terms such as "inner", "outer" and the like are based on the figures shown.

[0055] The above description of disclosed embodiments provides enabling disclosure sufficient for one of ordinary skill in the art to practice the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and generic principles defined herein can be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A laser treatment head, characterized in that, The treatment head body (200) comprises a housing (210), a concave lens and a convex lens, wherein the housing (210) is mounted on the hand tool (100), the concave lens and the convex lens are arranged in the housing (210) in sequence along the light path direction, and the position of the concave lens is fixed, and the distance between the convex lens and the concave lens is adjustable.

2. The laser treatment head of claim 1, wherein, The concave lens is a flat concave lens (220), and the flat surface of the flat concave lens (220) faces the hand tool (100).

3. The laser treatment head of claim 2, wherein, The convex lens is a flat convex lens (230), and the flat surface of the flat convex lens (230) faces the flat concave lens (220).

4. The laser treatment head of claim 2, wherein, The convex lens is a biconvex lens.

5. The laser treatment head of claim 3, wherein, The treatment head body (200) further comprises a rotation sleeve (240) and a moving sleeve (250), wherein the rotation sleeve (240) is rotationally arranged in the housing (210), and the flat concave lens (220) is mounted on the rotation sleeve (240); the moving sleeve (250) is slidingly arranged in the housing (210), the flat convex lens (230) is mounted on the moving sleeve (250), and the moving sleeve (250) is threadedly connected with the rotation sleeve (240); and the housing (210) is provided with an operation opening for rotating the rotation sleeve (240).

6. The laser treatment head of claim 5, wherein, The interior of the rotation sleeve (240) is provided with a first step (241), the flat concave lens (220) is sleeved in the rotation sleeve (240), and the flat surface of the flat concave lens (220) abuts against the first step (241).

7. The laser treatment head of claim 5, wherein, The interior of the moving sleeve (250) is provided with a second step (251), the flat convex lens (230) is sleeved in the moving sleeve (250), and the flat surface of the flat convex lens (230) abuts against the second step (251).

8. The laser treatment head of claim 5, wherein, The moving sleeve (250) comprises a straight cylinder segment (252) and a tapered segment (253) arranged in sequence along the light path direction, wherein the straight cylinder segment (252) is threadedly connected with the rotation sleeve (240), and the flat convex lens (230) is mounted on the straight cylinder segment (252); along the light path direction, the diameter of the tapered segment (253) gradually increases.

9. The laser treatment head of claim 5, wherein, The rotation sleeve (240) is provided with external threads, and the moving sleeve (250) is provided with a threaded hole screwing with the external threads.

10. The laser treatment head according to any one of claims 1 to 9, characterized in that The hand tool (100) is in the shape of a long rod, and the outer surface of the hand tool (100) is provided with a holding concave surface (110).

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