Laser scanning device

Abstract

The present application relates to the field of laser scanning technology, and provides a laser scanning device, which includes a housing, a laser generator, a reflector assembly, an elastic member, and a rotating member, wherein the laser generator is used to emit laser light; the reflector assembly is arranged on the light output path of the laser generator, and is used to reflect the laser light to the working surface; one end of the elastic member is fixed to the housing, and the other end is connected to the first abutment point of the reflector assembly; the rotating member is provided with a plurality of first abutment surfaces, and the rotating member rotates so that the plurality of first abutment surfaces alternately abut with the second abutment point of the reflector assembly, and when the plurality of first abutment surfaces abut with the second abutment point, the spacing between the abutment point on each first abutment surface and the first abutment point in the first direction is different, so as to change the light output direction of the reflector assembly; wherein the reflector assembly and the working surface are arranged along the first direction. The present application can simplify the rotation control of the reflector assembly and improve the reliability of the laser scanning device.

Description

Technical Field

[0001] The present application relates to the field of laser scanning technology, and in particular to a laser scanning device. Background Art

[0002] In the prior art, the laser scanning device usually needs to control the rotation of the reflector assembly to change the light emitting direction of the reflector assembly, thereby realizing laser scanning. However, the laser scanning device usually only needs to scan within a certain range and does not need to perform 360-degree scanning. Therefore, when controlling the rotation of the reflector assembly, it is usually necessary to intermittently change the rotation direction of the rotating part connected to the reflector assembly so that the reflector assembly rotates within a certain range. Therefore, the rotation control method of the reflector assembly is relatively complicated and requires frequent changes in the rotation control direction of the rotating part. Summary of the invention

[0003] The present application provides a laser scanning device, which can simplify the rotation control of the reflector assembly and improve the reliability of the laser scanning device.

[0004] In order to solve the above technical problems, the present application provides a laser scanning device, which includes a shell, a laser generator, a reflector assembly, an elastic member, and a rotating member. The laser generator is used to emit laser light; the reflector assembly is arranged on the light output path of the laser generator, and is used to reflect the laser light to a working surface; one end of the elastic member is fixed to the shell, and the other end is connected to a first abutment point of the reflector assembly; the rotating member is provided with a plurality of first abutment surfaces, and the rotating member rotates so that the plurality of first abutment surfaces alternately abut with the second abutment point of the reflector assembly, and when the plurality of first abutment surfaces abut with the second abutment point, the distances from the abutment point to the first abutment point on each first abutment surface in the first direction are different, so as to change the light output direction of the reflector assembly; wherein the reflector assembly and the working surface are arranged along the first direction.

[0005] When the rotating member rotates, the first abutting surface rotates and abuts against the second abutting point, and the distance between the abutting point and the first abutting point on the same first abutting surface in the first direction is a fixed first distance value.

[0006] The first distance value decreases or increases along the rotation direction of the rotating member, so that when the plurality of first abutting surfaces rotate alternately to abut against the second abutting point, the light output angle of the reflector assembly increases or decreases in sequence.

[0007] In which, the rotating member is also provided with a second abutment surface, and multiple first abutment surfaces and the second abutment surfaces are arranged in sequence along the rotation direction of the rotating member, and the second abutment surface is connected between the first abutment surface with the maximum first distance value and the first abutment surface with the minimum first distance value; when the second abutment surface abuts against the second abutment point, the distance from the abutment point on the second abutment surface in the first direction to the first abutment point gradually decreases along the rotation direction from the maximum first distance value to the minimum first distance value, and at this time the first distance value increases along the rotation direction of the rotating member; or the distance from the abutment point on the second abutment surface in the first direction to the first abutment point gradually increases along the rotation direction from the minimum first distance value to the maximum first distance value, and at this time the first distance value decreases along the rotation direction of the rotating member.

[0008] In which, the rotating member is arranged in a cylindrical shape, and its outer peripheral wall is divided into multiple first abutment surfaces and second abutment surfaces. In the working state, the rotation axis of the rotating member is arranged perpendicular to the first direction, and the distance from the rotation axis to the first abutment point in the first direction is fixed; the distance from the abutment point on the same first abutment surface to the rotation axis is a fixed first preset value, so that the first distance value is a fixed value; the first preset values ​​corresponding to different first abutment surfaces are different, so that the distances from the abutment points on different first abutment surfaces in the first direction to the first abutment points are different; the distance from the abutment point on the second abutment surface to the rotation axis gradually decreases from the maximum first preset value to the minimum first preset value along the rotation direction, or gradually increases from the minimum first preset value to the maximum first preset value.

[0009] In which, the rotating member is arranged in a cylindrical shape, and one end wall thereof is divided into a plurality of first abutment surfaces and a second abutment surface. When in working state, the rotation axis of the rotating member is arranged parallel to the first direction; the distance from the abutment point on the same first abutment surface to the preset vertical plane of the rotation axis is a fixed second preset value, so that the first distance value is a fixed value; the second preset values ​​corresponding to different first abutment surfaces are different, so that the spacings from the abutment points on different first abutment surfaces to the first abutment points in the first direction are different; the distance from the abutment point on the second abutment surface to the preset vertical plane gradually decreases from the maximum second preset value to the minimum second preset value along the rotation direction, or gradually increases from the minimum second preset value to the maximum second preset value.

[0010] Among them, the laser scanning device also includes a signal generator, a signal receiver, a light blocking disc, and a control component. The light blocking disc forms a plurality of light blocking strips, and the light blocking disc rotates coaxially with the rotating member. During the rotation of the rotating member, when the light emitting direction of the reflector assembly changes, a light blocking strip rotates between the signal generator and the signal receiver to block the signal receiver from receiving the light signal emitted by the signal generator. The control component controls the laser generator to stop emitting laser in response to the signal receiver stopping receiving the light signal.

[0011] Wherein, the arc values ​​corresponding to the plurality of first abutting surfaces in the rotation direction are equal.

[0012] The laser scanning device further comprises a driving member which is transmission-connected with the rotating member and is used for driving the rotating member to rotate at a uniform speed around the rotation axis.

[0013] Wherein, the reflector assembly is rotatably connected to the shell.

[0014] The beneficial effect of the present application is that the present application can change the inclination angle of the reflector assembly by setting a rotating member and an elastic member to cooperate, thereby changing the light emitting direction of the reflector assembly. Specifically, the reflector assembly is abutted with different first abutting surfaces to change the distance between the abutting point on the first abutting surface in the first direction and the first abutting point of the reflector assembly, thereby accurately adjusting the distance between the second abutting point and the first abutting point of the reflector assembly in the first direction, thereby accurately adjusting the angle between the reflector assembly and the working surface, adjusting the light emitting direction of the reflector assembly, so as to achieve laser scanning on the working surface; and the rotation of the rotating member will cause multiple first abutting surfaces to alternately abut with the second abutting point of the reflector assembly, so that the change in the light emitting direction of the reflector assembly can be achieved by controlling the unidirectional rotation of the rotating member, and there is no need to frequently change the rotation direction of the rotating member, so it is easy to simplify the rotation control of the reflector assembly, reduce the probability of damage to the rotating member, and thus improve the reliability of the laser scanning device. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. Among them:

[0016] Figure 1 It is a structural schematic diagram of an embodiment of the laser scanning device of the present application;

[0017] Figure 2 is a schematic structural diagram of another embodiment of the laser scanning device of the present application;

[0018] Figure 3 It is a structural schematic diagram of an embodiment of a rotating member of the present application;

[0019] Figure 4 yes Figure 3 A schematic side view of an embodiment;

[0020] Figure 5 It is a structural schematic diagram of another embodiment of the laser scanning device of the present application;

[0021] Figure 6 yes Figure 5 A schematic side view of an embodiment;

[0022] Figure 7 yes Figure 5 A schematic structural diagram of a part of the structure of an embodiment. DETAILED DESCRIPTION

[0023] In the following description, specific details such as specific system structures, technologies, etc. are provided for the purpose of illustration rather than limitation, so as to provide a thorough understanding of the embodiments of the present application. However, it should be clear to those skilled in the art that the present application may also be implemented in other embodiments without these specific details. In other cases, detailed descriptions of well-known systems, devices, circuits, and methods are omitted to prevent unnecessary details from obstructing the description of the present application.

[0024] The terms "first", "second" and the like in this application are used to distinguish different objects, rather than to describe a specific order. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions. It should be understood that when used in this specification and the appended claims, the term "including" indicates the presence of the described features, wholes, steps, operations, elements and / or components, but does not exclude the presence or addition of one or more other features, wholes, steps, operations, elements, components and / or their collections. It should also be understood that the terms used in this specification of the application are only for the purpose of describing a specific embodiment and are not intended to limit the application. As used in this specification of the application and the appended claims, unless the context clearly indicates otherwise, the singular forms of "one", "an" and "the" are intended to include plural forms. It should also be further understood that the term "and / or" used in this specification of the application and the appended claims refers to any combination of one or more of the items listed in association and all possible combinations, and includes these combinations.

[0025] It should be noted that when a certain element is fixed to another element, it includes directly fixing the element to the other element, or fixing the element to the other element through at least one other element in the middle. When an element is connected to another element, it includes directly connecting the element to the other element, or connecting the element to the other element through at least one other element in the middle.

[0026] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0027] This application first proposes a laser scanning device, such as Figures 1 to 7 As shown. The laser scanning device comprises a housing 10, a laser generator 11, a reflector assembly 12, an elastic member 13, and a rotating member 14. The laser generator 11 is used to emit laser light. The reflector assembly 12 is arranged on the light emitting path of the laser generator 11, and is used to reflect the laser light to the working surface b. One end of the elastic member 13 is fixed on the housing 10, and the other end is connected to the first abutment point 121 of the reflector assembly 12. The rotating member 14 is provided with a plurality of first abutment surfaces 141. The rotating member 14 rotates so that the plurality of first abutment surfaces 141 alternately abut with the second abutment point 122 of the reflector assembly 12. When the plurality of first abutment surfaces 141 abut with the second abutment point 122, the spacing d between the abutment point on each first abutment surface 141 and the first abutment point 121 in the first direction y is different, so as to change the light emitting direction of the reflector assembly 12. The reflector assembly 12 and the working surface b are arranged along the first direction y.

[0028] It should be noted that the reflector assembly 12 is arranged at a certain angle with the working surface b and the first direction y to reflect the laser onto the working surface b. The rotation of the reflector assembly 12 can change the light emission direction, and then can reflect the laser to different positions on the working surface b to achieve laser scanning. Among them, the first abutment point 121 and the second abutment point 122 are two abutment points arranged at intervals on the reflector assembly 12, respectively, the first abutment point 121 is connected to the elastic member 13, and the second abutment point 122 is abutted with the rotating member 14; the reflector assembly 12 is arranged between the elastic member 13 and the rotating member 14, and the change of the spacing d between the first abutment point 121 and the second abutment point 122 will cause the angle between the reflector assembly 12 and the first direction y and the angle between the working surface b to change, and then the light emission direction of the reflector assembly 12 will change, for example, the larger the spacing d between the first abutment point 121 and the second abutment point 122, the smaller the angle between the reflector assembly 12 and the first direction y.

[0029] It should be noted that the abutment point on the first abutment surface 141 refers to the corresponding abutment point on the first abutment surface 141 when the first abutment surface 141 abuts with the second abutment point 122; the spacing d refers to the distance from the abutment point on the first abutment surface 141 to the first abutment point 121 in the first direction y when the first abutment surface 141 abuts with the second abutment point 122; since the abutment point on the first abutment surface 141 abuts with the second abutment point 122, the spacing d from the abutment point on the first abutment surface 141 to the first abutment point 121 in the first direction y is the spacing d between the first abutment point 121 and the second abutment point 122 of the reflector assembly 12 in the first direction y.

[0030] In some embodiments, the reflector assembly 12 includes a reflector 123, and the first abutment point 121 and the second abutment point 122 are both set on the reflector 123; in another application scenario, the reflector assembly 12 includes a reflector 123 and a mirror seat 124 for fixing the reflector 123, and the first abutment point 121 and the second abutment point 122 are both set on the mirror seat 124, without specific limitation.

[0031] In some embodiments, the other end of the elastic member 13 may be fixedly connected to the first contact point 121 of the reflector assembly 12, so that the elastic force of the elastic member 13 is stably applied to the reflector assembly 12. Figure 1 As shown in , the elastic member 13 is arranged on the right side of the reflector assembly 12, and the elastic member 13 is in a compressed state, providing a leftward thrust to the reflector assembly 12. Figure 2 As shown), the elastic member 13 can also be arranged on the left side of the reflector assembly 12, and the elastic member 13 is in an extended state, still providing a leftward force to the reflector assembly 12; since the rotating member 14 is provided with a plurality of first abutting surfaces 141, the plurality of first abutting surfaces 141 are alternately abutted with the second abutting point 122 as the rotating member 14 rotates, that is, the abutting point on the rotating member 14 abutting with the second abutting point 122 switches between the plurality of first abutting surfaces 141 of the rotating member 14; further, since the spacing d between the abutting point abutting with the second abutting point 122 on different first abutting surfaces 141 and the first abutting point 121 is different, the rotation of the rotating member 14 will cause the spacing d between the second abutting point 122 and the first abutting point 121 to change accordingly, which will cause the angle between the reflector assembly 12 and the first direction y to change as the rotating member 14 rotates, thereby changing the incident angle and reflection angle of the laser at the reflector assembly 12, that is, changing the light emitting direction of the reflector assembly 12.

[0032] In the prior art, the laser scanning device usually needs to control the rotation of the reflector assembly 12 to change the light emitting direction of the reflector assembly 12, thereby realizing laser scanning. However, the laser scanning device usually only needs to scan within a certain range and does not need to perform 360-degree scanning. Therefore, when controlling the rotation of the reflector assembly 12, it is usually necessary to intermittently change the rotation direction a of the rotating member 14 connected to the reflector assembly 12 so that the reflector assembly 12 rotates within a certain range, thereby realizing scanning within a certain range. That is, during the operation of the laser scanning device, the rotation control method of the reflector assembly 12 is relatively complicated, and the rotation control direction of the rotating member 14 needs to be changed frequently.

[0033] In this embodiment, the tilt angle of the reflector assembly 12 can be changed by arranging the rotating member 14 and the elastic member 13 to cooperate with each other, thereby changing the light emitting direction of the reflector assembly 12 . Specifically, the distance d between the abutment point on the first abutment surface 141 in the first direction y and the first abutment point 121 of the reflector assembly 12 is changed by abutting the reflector assembly 12 with different first abutment surfaces 141, so as to accurately adjust the distance d between the second abutment point 122 and the first abutment point 121 of the reflector assembly 12 in the first direction y, and then accurately adjust the angle between the reflector assembly 12 and the working surface b, and adjust the light emitting direction of the reflector assembly 12 to realize laser scanning on the working surface b; and the rotation of the rotating member 14 will cause multiple first abutment surfaces 141 to alternately abut with the second abutment point 122 of the reflector assembly 12, so the light emitting direction of the reflector assembly 12 can be controlled by controlling the unidirectional rotation of the rotating member 14, and there is no need to frequently change the rotation direction of the rotating member 14, so it is easy to simplify the rotation control of the reflector assembly 12, reduce the probability of damage to the rotating member 14, and thus improve the reliability of the laser scanning device.

[0034] Furthermore, the present application utilizes the rotating member 14 and the elastic member 13 to respectively abut against two different abutment points of the reflector assembly 12, rather than actively abutting against a certain abutment surface of the reflector assembly 12. This can more accurately control the rotation angle of the reflector assembly 12, can flexibly control the light emission direction of the reflector assembly 12, and improve the control accuracy of the scanning area of ​​the laser scanning device, thereby facilitating the application of the laser scanning device in technical fields such as laser beauty, for example, it can be used in handheld laser beauty devices, etc.

[0035] In different application scenarios, the rotating member 14 and the elastic member 13 may be used in different ways to control the rotation of the reflector assembly 12 , which is described below with examples.

[0036] In some embodiments, the reflector assembly 12 is rotatably connected to the housing 10. After assembly, the housing 10 has a limiting effect on the reflector assembly 12, and there is a force between the rotating member 14 and the reflector assembly 12. The elastic force of the elastic member 13 on the reflector assembly 12 can cause the reflector assembly 12 to rotate around its rotation axis. Specifically, the abutment force of the rotating member 14 on the reflector assembly 12 and the limiting of the housing 10 can prevent the rotation of the reflector assembly 12, so that the reflector assembly 12 is in a force-balanced state; as the rotating member 14 rotates, the first abutment surface 141 abutting against the second abutment point 122 changes, and the distance d from the second abutment point 122 to the first abutment point 121 changes, and the force of the rotating member 14 on the reflector assembly 12 changes, so that the reflector assembly 12 enters a new force-balanced state, and the angle between the reflector assembly 12 and the first direction y changes.

[0037] The above-mentioned arrangement can utilize the rotating member 14 to control the rotation angle of the reflector assembly 12; and utilizing the shell 10 to limit the position of the reflector assembly 12 can improve the position stability of the reflector assembly 12 in the working state, thereby facilitating the application of the laser scanning device to handheld devices such as handheld laser beauty instruments; and the shell 10 can be utilized to fix the position of the rotation axis of the reflector assembly 12 to limit the reflector assembly 12 to rotate only within a certain fixed rotation plane, so as to better control the rotation angle and light emission direction of the reflector assembly 12 and improve the control accuracy.

[0038] In another embodiment, the first direction y can be set as the gravity direction, and the rotation control of the reflector assembly 12 is realized by using the gravity of the reflector assembly 12, the elastic force of the elastic member 13 on the reflector assembly 12, and the force of the rotating member 14 on the reflector assembly 12. This setting can save the rotation connection between the reflector assembly 12 and the housing 10, has a simple structure, and saves parts.

[0039] In other embodiments, similar improvements may be made to the laser scanning device, which will not be described in detail here.

[0040] In different application scenarios, the laser scanning device can be improved based on product usage requirements so that when the reflector assembly 12 and a fixed first abutment surface 141 rotate and abut with the rotation of the rotating member 14, the angle between the reflector assembly 12 and the first direction y remains unchanged or gradually changes, as illustrated by the following example embodiments.

[0041] In some embodiments, when the rotating member 14 rotates, the first abutting surface 141 rotates to abut against the second abutting point 122 , and the distance d from the abutting point on the same first abutting surface 141 to the first abutting point 121 in the first direction y is a fixed first distance value.

[0042] When the distance d between the second abutment point 122 and the first abutment point 121 of the reflector assembly 12 remains unchanged, the angle between the reflector assembly 12 and the first direction y remains unchanged, and the light emitting direction of the reflector assembly 12 remains unchanged, and the reflector assembly 12 can be fixed to emit laser light toward a specific area.

[0043] In one application scenario, the second abutting point 122 abuts against a first abutting surface 141, and the rotating member 14 rotates, so that the second abutting point 122 moves in the opposite direction on the first abutting surface 141, that is, the first abutting surface 141 rotates and abuts against the second abutting point 122; in the process of the second abutting point 122 abutting against a first abutting surface 141, the distance d from the abutting point on the first abutting surface 141 to the first abutting point 121 is always a fixed value (that is, the first distance value), so that the second abutting point 122 can be moved in the opposite direction on the first abutting surface 141. 2 to the first abutment point 121 is fixed with the rotation of the rotating member 14, so the angle between the reflector assembly 12 and the first direction y remains unchanged at this time; when the second abutment point 122 switches from abutting with a certain first abutment surface 141 to abutting with another first abutment surface 141, the distance d from the second abutment point 122 to the first abutment point 121 will change from a fixed value to another fixed value, that is, at this time, the angle between the reflector assembly 12 and the first direction y will change from a fixed angle to another fixed angle. That is, during the rotation of the rotating member 14, the angle between the reflector assembly 12 and the first direction y is not always changing, that is, the light emitting direction of the reflector assembly 12 is not always switching, but will remain unchanged during the rotation and abutment process between the second abutment point 122 of the reflector assembly 12 and a certain first abutment surface 141, so as to realize the fixed-point light irradiation of a certain specific area.

[0044] This arrangement enables the laser scanning device to be used not only for scanning, but also to achieve timed and fixed-point irradiation of a certain area during the scanning process, which is convenient for use in laser scanning devices such as laser beauty equipment.

[0045] In other embodiments (not shown), the distance between the abutment point on the same first abutment surface and the first abutment point can also be set to a variable value. That is, the distance between the abutment point on the same first abutment surface that is in abutment with the second abutment point and the first abutment point changes with the rotation of the rotating member, so that the distance between the second abutment point and the first abutment point also changes, so that the angle between the reflector assembly and the first direction also changes, so that during the rotation of the rotating member, the angle between the reflector assembly and the first direction is always changing.

[0046] In other embodiments (not shown), the distances between the abutment points on some first abutment surfaces and the first abutment points can be set to be variable values, and the distances between the abutment points on other first abutment surfaces and the first abutment points can be set to be fixed values. When the second abutment point abuts against a first abutment surface among some first abutment surfaces, the light emitting direction of the reflector assembly changes with the rotation of the rotating member, and when the second abutment point abuts against a first abutment surface among other first abutment surfaces, the light emitting direction of the reflector assembly remains fixed with the rotation of the rotating member. No specific limitation is given.

[0047] In other embodiments, similar improvements may be made to the laser scanning device, which will not be described in detail here.

[0048] By controlling the first distance values ​​corresponding to different first abutment surfaces 141, the light emitting direction of the reflector assembly 12 can be controlled; therefore, by controlling the arrangement of different first abutment surfaces 141 on the rotating member 14, the changing rule of the light emitting direction of the reflector assembly 12 can be controlled, which is explained with the following embodiments.

[0049] In some embodiments, the first distance value decreases along the rotation direction a of the rotating member 14 , so that when the plurality of first abutting surfaces 141 rotate alternately to abut against the second abutting point 122 , the light emission angle of the reflector assembly 12 increases or decreases sequentially.

[0050] Specifically, the plurality of first abutting surfaces 141 are sequentially arranged along the rotation direction a of the rotating member 14 , and the corresponding first distance values ​​are sequentially decreased along the arrangement direction.

[0051] In one application scenario, when an incident laser enters the reflector assembly 12 along a direction perpendicular to the first direction y, the larger the angle between the reflector assembly 12 and the first direction y, the larger the angle between the incident light and the normal, and the larger the angle between the light emitted from the reflector assembly 12 and the normal, that is, the larger the reflection angle, that is, the larger the light output angle of the reflector assembly 12; in another application scenario (not shown), when the incident laser enters the reflector assembly 12 along the first direction y, the larger the angle between the reflector assembly 12 and the first direction y, the smaller the angle between the incident light and the normal, and the smaller the angle between the light emitted from the reflector assembly 12 and the normal, that is, the smaller the reflection angle, that is, the smaller the light output angle of the reflector assembly 12.

[0052] Specifically, as the rotating member 14 rotates, the second abutment point 122 abuts against a plurality of different first abutment surfaces 141 alternately in a direction opposite to the rotation direction a of the rotating member 14, so that the distance d from the second abutment point 122 to the first abutment point 121 increases with the rotation, that is, the angle between the reflector assembly 12 and the first direction y decreases, and then, with reference to the incident direction of the incident laser, the light output angle of the reflector assembly 12 increases or decreases. Figure 1 In the embodiment, multiple first abutment surfaces 141 are arranged in sequence along the rotation direction a of the rotating member 14, and their corresponding first distance values ​​decrease in sequence along the arrangement direction. The incident laser enters the reflector assembly 12 in a direction perpendicular to the first direction y, and the distance d from the second abutment point 122 to the first abutment point 121 increases in sequence with the rotation of the rotating member 14, that is, the second abutment point 122 abuts on different first abutment surfaces 141 in sequence, the angle between the reflector assembly 12 and the first direction y becomes smaller, and the light output angle of the reflector assembly 12 decreases in sequence.

[0053] The beneficial effect of the above arrangement is that the light emitting angle of the reflector assembly 12 can be controlled to change sequentially by controlling the rotation of the rotating member 14, which is convenient for controlling the scanning range of the laser scanning device to change sequentially, thereby improving the convenience of use. Figure 1 In the shown embodiment, the first distance value is set to decrease along the rotation direction a of the rotating member 14, so that the first distance value can be increased in the direction opposite to the rotation direction a, that is, the distance d between the second abutment point 122 and the first abutment point 121 is increased, that is, the second abutment point 122 can achieve a smoother transition when switching the abutment point on different first abutment surfaces 141, thereby enabling the light output direction of the reflector assembly 12 to be smoothly changed.

[0054] In other embodiments, see Figure 2 The first distance value can also be set to increase along the rotation direction a of the rotating member 14, that is, multiple first abutment surfaces 141 are arranged in sequence along the rotation direction a of the rotating member 14, and their corresponding first distance values ​​are increased in sequence along their arrangement direction, so that when the rotating member 14 rotates, the distance d between the second abutment point 122 and the first abutment point 121 is reduced in sequence, thereby changing the light output direction of the reflector assembly 12, which will not be repeated here.

[0055] In other embodiments, the first distance value may be set to decrease along the first rotation direction, and the first rotation direction is the circumferential direction of the rotating member 14. The rotating member 14 is set to rotate along the first rotation direction first, and then the rotating member 14 may be set to rotate in the direction opposite to the first rotation direction to reset, which is not specifically limited.

[0056] In other embodiments, similar improvements may be made to the laser scanning device, which will not be described in detail here.

[0057] In order to control the angle between the reflector assembly 12 and the first direction y to increase and then decrease, or decrease and then increase, within a certain range, the rotating member 14 can be further improved. The change and resetting of the light emitting direction of the reflector assembly 12 can be achieved through the unidirectional rotation of the rotating member 14. The following embodiments are listed for illustration.

[0058] In some embodiments, see Figure 1The rotating member 14 is also provided with a second abutting surface 142, and a plurality of first abutting surfaces 141 and the second abutting surfaces 142 are arranged in sequence along the rotation direction a of the rotating member 14, and the second abutting surface 142 is connected between the first abutting surface 141 with the maximum first distance value and the first abutting surface 141 with the minimum first distance value; when the second abutting surface 142 abuts against the second abutting point 122, the distance d from the abutting point on the second abutting surface 142 to the first abutting point 121 in the first direction y gradually increases from the minimum first distance value to the maximum first distance value along the rotation direction a, and at this time, the first distance values ​​corresponding to the plurality of first abutting surfaces 141 decrease along the rotation direction a of the rotating member 14.

[0059] It should be noted that the abutment point on the second abutment surface 142 refers to the corresponding abutment point on the second abutment surface 142 when the second abutment surface 142 abuts against the second abutment point 122; the abutment point on the rotating member 14 is the same and will not be repeated here.

[0060] As the rotating member 14 rotates, the abutment point on the rotating member 14 moves in a direction opposite to the rotation direction a of the rotating member 14 , that is, the second abutment point 122 moves in a direction opposite to the rotation direction a of the rotating member 14 to abut against the rotating member 14 . Therefore, in an application scenario, the second abutment point 122 moves from the first abutment surface 141 with the smallest first distance value through multiple first abutment surfaces 141 in sequence until it moves to the first abutment surface 141 with the largest first distance value (in this process, the spacing d between the second abutment point 122 and the first abutment point 121 increases in sequence), and then moves to the second abutment surface 142; on the second abutment surface 142, as the rotating member 14 rotates, the second abutment point 122 rotates in a direction opposite to the rotation direction a of the rotating member 14 to abut against the second abutment surface 142, so the spacing d between the second abutment point 122 and the first abutment point 121 gradually decreases to the smallest first distance value; then as the rotating member 14 rotates, the second abutment point 122 moves again to the first abutment surface 141 with the smallest first distance value, and the cycle repeats.

[0061] The above-mentioned arrangement can control the angle between the reflector assembly 12 and the first direction y to change in the opposite direction without changing the rotation direction a of the rotating member 14, so as to reset the reflector assembly 12, that is, the light emitting direction of the reflector assembly 12 can be changed and reset by controlling the unidirectional rotation of the rotating member 14, that is, the angle between the reflector assembly 12 and the first direction y can be controlled to change within a fixed range, for example, it can be controlled to change within the range of 0-90 degrees.

[0062] Furthermore, multiple first abutment surfaces 141 whose first distance values ​​change in a step-like manner are provided, and the corresponding multiple first distance values ​​decrease along the rotation direction a of the rotating member 14, so that the second abutment point 122 can achieve a smoother transition when switching the abutment point on different first abutment surfaces 141, thereby enabling the light output direction of the reflector assembly 12 to change smoothly.

[0063] In other embodiments, see Figure 2 When the second abutting surface 142 abuts against the second abutting point 122, the distance d from the abutting point on the second abutting surface 142 to the first abutting point 121 in the first direction y gradually decreases from the maximum first distance value to the minimum first distance value along the rotation direction a. At this time, the first distance values ​​corresponding to the multiple first abutting surfaces 141 gradually increase along the rotation direction a.

[0064] In one application scenario, the second abutment point 122 moves from the first abutment surface 141 with the maximum first distance value in a direction opposite to the rotation direction a of the rotating member 14 through multiple first abutment surfaces 141 in sequence until it moves to the first abutment surface 141 with the minimum first distance value (in this process, the spacing d between the second abutment point 122 and the first abutment point 121 decreases in sequence), and then moves to the second abutment surface 142; on the second abutment surface 142, as the rotating member 14 rotates, the second abutment point 122 rotates in a direction opposite to the rotation direction a of the rotating member 14 to abut against the second abutment surface 142, so that the spacing d between the second abutment point 122 and the first abutment point 121 gradually increases to the maximum first distance value; then as the rotating member 14 rotates, the second abutment point 122 moves again to the first abutment surface 141 with the maximum first distance value, and the cycle repeats.

[0065] In other embodiments, similar improvements may be made to the laser scanning device, which will not be described in detail here.

[0066] By improving the shape of the rotating member 14, the structure and assembly convenience of the laser scanning device can be further simplified, and the following embodiments are listed for illustration.

[0067] In some embodiments, see Figure 1 , Figure 2The rotating member 14 is arranged in a cylindrical shape, and its outer peripheral wall is divided into a plurality of first abutting surfaces 141 and a second abutting surface 142. In the working state, the rotation axis of the rotating member 14 is arranged perpendicular to the first direction y, and the distance from the rotation axis to the first abutting point 121 in the first direction y is fixed; the distance from the abutting point on the same first abutting surface 141 to the rotation axis is a fixed first preset value, so that the first distance value is a fixed value; the first preset values ​​corresponding to different first abutting surfaces 141 are different, so that the distances d from the abutting points on different first abutting surfaces 141 to the first abutting point 121 in the first direction y are different; the distance from the abutting point on the second abutting surface 142 to the rotation axis gradually decreases from the maximum first preset value to the minimum first preset value along the rotation direction a, or gradually increases from the minimum first preset value to the maximum first preset value.

[0068] A cylindrical rotating part 14 is selected, and its outer peripheral wall is divided into multiple first abutment surfaces 141 and second abutment surfaces 142. The distance d between the abutment point on the first abutment surface 141 and the abutment point on the second abutment surface 142 and the first abutment point 121 when they abut with the second abutment point 122 can be adjusted by setting the distance from the outer peripheral wall to the rotation axis, thereby making the structural design simpler.

[0069] Furthermore, the smaller the distance between the abutment surface and the rotation axis, the greater the distance d between the corresponding abutment point on the abutment surface and the first abutment point 121 when abutting against the second abutment point 122. Therefore, by setting the distances between the abutment points on the same first abutment surface 141 and the rotation axis to be equal (i.e., a fixed first preset value), it is possible to achieve a fixed first distance value between the abutment point on the first abutment surface 141 and the first abutment point 121 when abutting against the second abutment point 122; further, by setting the first preset values ​​corresponding to each first abutment surface 141 to be different, it is possible to make the first distance values ​​corresponding to each first abutment surface 141 different; further, the distance between the abutment point on the second abutment surface 142 and the rotation axis along the rotation direction a increases from the largest to the smallest. A preset value gradually decreases to a minimum first preset value, so as to facilitate the distance d from the abutment point on the second abutment surface 142 to the first abutment point 121 to gradually increase from the minimum first distance value to the maximum first distance value along the rotation direction a; and the distance from the abutment point on the second abutment surface 142 to the rotation axis is set to gradually increase from the minimum first preset value to the maximum first preset value along the rotation direction a, so as to facilitate the distance d from the abutment point on the second abutment surface 142 to the first abutment point 121 to gradually decrease from the maximum first distance value to the minimum first distance value along the rotation direction a.

[0070] In some other embodiments, an end wall of the cylindrical rotating member 14 may be selected as the abutment surface, and the end wall is divided into a second abutment surface 142 and a plurality of first abutment surfaces 141 .

[0071] See also Figure 3 , Figure 4 The rotating member 14 is arranged in a cylindrical shape, and one end wall thereof is divided into a plurality of first abutting surfaces 141 and a second abutting surface 142. When in working state, the rotation axis of the rotating member 14 is arranged parallel to the first direction y; the distance from the abutting point on the same first abutting surface 141 to the preset vertical plane of the rotation axis is a fixed second preset value, so that the first distance value is a fixed value; the second preset value corresponding to each first abutting surface 141 is different, so that the distance d from the abutting point on different first abutting surfaces 141 to the first abutting point 121 in the first direction y is different; the distance from the abutting point on the second abutting surface 142 to the preset vertical plane gradually decreases from the maximum second preset value to the minimum second preset value along the rotation direction a, or gradually increases from the minimum second preset value to the maximum second preset value.

[0072] The above arrangement can utilize the distance from the end wall of the abutment surface to the preset vertical plane of the rotation axis to adjust the distance d between the abutment point on the first abutment surface 141 and the abutment point on the second abutment surface 142 and the first abutment point 121 when they abut with the second abutment point 122, making the structural design simpler.

[0073] Similarly, the smaller the distance between the abutting surface and the preset vertical plane, the larger the distance d between the corresponding abutting point on the abutting surface and the first abutting point 121 when abutting with the second abutting point 122. Therefore, by correspondingly adjusting the distances between different areas on the end surface and the preset vertical plane, the distances d between the abutting points on the second abutting surface 142 and the abutting points on the multiple first abutting surfaces 141 and the first abutting point 121 when abutting with the second abutting point 122 can be achieved, which will not be repeated here.

[0074] Since the first distance values ​​corresponding to the multiple first abutment surfaces 141 are different, when the second abutment point 122 of the reflector assembly 12 moves between two adjacent first abutment surfaces 141, the distance d between the second abutment point 122 and the first abutment point 121 will decrease or increase in a step-by-step manner. At this time, the angle between the reflector assembly 12 and the first direction y changes from a fixed value to another fixed value, and the light emitting direction of the reflector assembly 12 changes. In order to ensure the stability of the laser emitted by the laser scanning device, the laser generator 11 can be controlled to stop emitting laser during the process of changing the light emitting direction of the reflector assembly 12; when the second abutment point 122 rotates to abut on the second abutment surface 142, the light emitting direction of the reflector assembly 12 also changes with the rotation of the rotating member 14, and therefore the laser generator 11 can also be controlled to stop emitting laser during this process.

[0075] In other embodiments, similar improvements may be made to the laser scanning device, which will not be described in detail here.

[0076] In order to improve the light emitting stability of the laser scanning device, when the reflector assembly 12 switches the light emitting direction, the laser generator can be controlled to stop emitting laser light, which is described below with an example embodiment.

[0077] In some embodiments, see Figures 5 to 7 The laser scanning device also includes a signal generator 15, a signal receiver 16, and a light blocking optical disc 17; the light blocking optical disc 17 forms a plurality of light blocking strips 171, and the light blocking optical disc 17 rotates coaxially with the rotating member 14; during the rotation of the rotating member 14, when the light emitting direction of the reflector assembly 12 changes, a light blocking strip 171 rotates between the signal generator 15 and the signal receiver 16 to block the signal receiver 16 from receiving the light signal emitted by the signal generator 15; the control component controls the laser generator 11 to stop emitting laser in response to the signal receiver 16 stopping receiving the light signal.

[0078] A light blocking disk 17 is coaxially fixed with the rotating member 14, and the light blocking disk 17 rotates as the rotating member 14 rotates. A light blocking strip 171 is provided at a corresponding position of the light blocking disk 17, so that when the second abutment point 122 of the reflector assembly 12 moves between two adjacent first abutment surfaces 141 or onto the second abutment surface 142, a light blocking strip 171 rotates with the light blocking disk 17 to between the signal generator 15 and the signal receiver 16, thereby blocking the light signal emitted by the signal generator 15. The control assembly can control the laser generator 11 to stop emitting laser light in response to the signal receiver 16 stopping receiving the light signal.

[0079] In some embodiments, see Figures 5 to 7 The light blocking plate 17 and the rotating member 14 are arranged along the second direction x parallel to the rotation axis of the rotating member 14, the signal generator 15, the signal receiver 16 and the light blocking plate 17 are arranged along the third direction z, and the first direction y, the second direction x and the third direction z are arranged perpendicularly in pairs, and the signal generator 15 and the signal receiver 16 are arranged on the side of the rotation axis of the light blocking plate 17 away from the reflector assembly 12; when the second abutment point 122 of the reflector assembly 12 moves between two adjacent first abutment surfaces 141 or on the second abutment surface 142, a light blocking strip 171 is arranged between the signal generator 15 and the signal receiver 16 along the third direction z. This structure can reduce the interference between the signal generator 15 and the signal receiver 16 and the reflector assembly 12, the elastic member 13 and other components.

[0080] In other embodiments, the signal generator 15 and the signal receiver 16 may also be arranged at other positions of the rotation axis.

[0081] The above-mentioned arrangement makes it easy to control the laser generator 11 to stop emitting laser when the light emitting direction of the reflector assembly 12 changes, so that the laser scanning device can realize fixed-point radiation for multiple different specific scanning areas, and stop radiating for other areas outside the specific scanning area, thereby reducing energy consumption and reducing the destructive interference of the laser on other areas that do not need to be scanned, which is conducive to the application of the laser scanning device in application fields with high requirements for laser scanning control accuracy, such as laser beauty equipment.

[0082] In other embodiments (not shown), it can be arranged that when the second abutment point of the reflector assembly is rotationally abutted against the first abutment surface, the corresponding light-blocking strip is rotated to between the signal generator and the signal receiver, blocking the signal receiver from receiving the light signal emitted by the signal generator; when the second abutment point of the reflector assembly moves between two adjacent first abutment surfaces or onto the second abutment surface, the light-blocking strip is rotated out of the area between the signal generator and the signal receiver, and the signal receiver normally receives the light signal emitted by the signal generator; and the control component controls the laser generator to stop emitting laser in response to the signal receiver receiving the light signal, which will not be repeated here.

[0083] In other embodiments, similar improvements may be made to the laser scanning device, which will not be described in detail here.

[0084] In some embodiments, see Figure 1 , Figure 2 The central angles A of the arcs corresponding to the plurality of first abutting surfaces 141 in the rotation direction a are equal.

[0085] The duration of the rotational abutment of the second abutment point 122 on a first abutment surface 141 having a fixed first distance value can determine the duration of the angle between the reflector assembly 12 and the first direction y remaining unchanged at a fixed value, that is, the duration of the light emitting direction of the reflector assembly 12 remaining unchanged toward a specific direction. Therefore, when the rotating member 14 rotates at a constant speed, the above-mentioned setting can make the duration of the rotational abutment of the second abutment point 122 of the reflector assembly 12 on multiple first abutment surfaces 141 having different first distance values ​​equal, so that the angle between the reflector assembly 12 and the first direction y can stay at the same time when taking different fixed values, that is, the laser emitted after being reflected by the reflector assembly 12 stays and scans at each specific scanning area for the same length of time. Therefore, the above-mentioned setting can enable the laser scanning device to achieve uniform laser scanning for multiple specific scanning areas.

[0086] In other embodiments, the angles of the central angles A of the arcs corresponding to the first abutting surface 141 and the second abutting surface 142 in the rotation direction a may be adjusted according to the use requirements of the product, which will not be described in detail here.

[0087] In some embodiments, see Figure 5The laser scanning device also includes a driving member 18, which is transmission-connected to the rotating member 14 and is used to drive the rotating member 14 to rotate at a uniform speed around the rotation axis.

[0088] Using the driving member 18 to control the rotation of the rotating member 14 can more easily achieve uniform rotation, and can also be automated to improve convenience.

[0089] In some embodiments, the drive member 18 includes a motor.

[0090] In some embodiments, see Figure 1 , Figure 7 The rotating member 14 is arranged in a cylindrical shape, and its outer peripheral wall is divided into a plurality of first abutting surfaces 141 and second abutting surfaces 142. The rotation axis of the rotating member 14 is arranged perpendicular to the first direction y, and the distance d from the rotation axis to the first abutting point 121 in the first direction y is fixed; the distance from the abutting point on the same first abutting surface 141 to the rotation axis is a fixed first preset value, so that the first distance value is a fixed value; the first preset value corresponding to each first abutting surface 141 is different, so that the distance on each first abutting surface 141 in the first direction y is fixed to the first preset value. The spacing d from the abutment point to the first abutment point 121 is different; the first distance values ​​corresponding to the multiple first abutment surfaces 141 decrease along the rotation direction a of the rotating member 14; and the first abutment point 121 is located at the upper right of the second abutment point 122, and the distance from the abutment point on the second abutment surface 142 to the rotation axis gradually decreases from the maximum first preset value to the minimum first preset value along the rotation direction a; the rotating member 14 rotates clockwise, the reflector assembly 12 is arranged at the upper right of the rotating member 14, and the laser generator 11 is arranged on the right side of the reflector assembly 12.

[0091] In one application scenario, see Figure 1The laser generator 11 is arranged on the right side of the reflector assembly 12, and emits laser light to the left along a direction perpendicular to the first direction y to the reflector assembly 12, and the laser light reflected by the reflector assembly 12 is emitted downward; the elastic member 13 is arranged on the upper right side of the reflector assembly 12, and the reflector assembly 12 is arranged on the upper right side of the rotating member 14, and the rotating member 14 can provide support for the reflector assembly 12 by supporting the second abutment point 122; the rotating member 14 rotates clockwise, and the distance from the abutment point on the second abutment surface 142 to the rotation axis gradually decreases along the rotation direction a from the maximum first preset value Reduced to the minimum first preset value, that is, the distance d from the abutment point on the second abutment surface 142 along the rotation direction a to the first abutment point 121 can be increased from the minimum first distance value to the maximum first distance value. Therefore, the second abutment point 122 of the reflector assembly 12 can move in the direction opposite to the rotation direction a to abut against the outer peripheral wall of the rotating member 14, thereby achieving the distance d between the second abutment point 122 and the first abutment point 121 to increase stepwise from the minimum first distance value to the maximum first distance value, and then gradually decrease from the maximum first distance value to the minimum first distance value.

[0092] In some embodiments, the rotating member 14 includes 12 first abutting surfaces 141 and 1 second abutting surface 142 , and the central angles A of the arcs corresponding to the 12 first abutting surfaces 141 in the rotation direction a are equal.

[0093] The above arrangement enables the laser scanning device to achieve fixed-point scanning of 12 specific scanning areas every time the rotating member 14 rotates one circle.

[0094] In some embodiments, the laser scanning device also includes a fast-axis collimator 21, a slow-axis imaging lens 22, and a fast-axis convergence lens 23. The fast-axis collimator 21, the slow-axis imaging lens 22, and the reflector assembly 12 are sequentially arranged on the light output path of the laser generator 11. The slow-axis imaging lens 22 is arranged between the fast-axis collimator 21 and the reflector assembly 12. The fast-axis convergence lens 23 is arranged on the light output path of the reflector assembly 12, and the installation distance between the slow-axis imaging lens 22 and the laser generator 11 is greater than the focal length of the slow-axis imaging lens 22.

[0095] Specifically, the laser emitted by the laser generator 11 first passes through the fast-axis collimator 21 to achieve collimation in the fast-axis direction. The light beam with a large divergence angle in the fast-axis direction is collimated into a light beam parallel to the fast axis and then emitted to the slow-axis imaging lens 22. The light beam emitted after passing through the slow-axis imaging lens 22 is reflected by the reflector assembly 12 and then emitted in the direction of the working surface b and imaged onto the working surface b. The working surface b is provided with a plurality of specific scanning areas to be scanned; the fast-axis converging lens 23 is arranged between the working surface b and the reflector assembly 12. The light beam first passes through the fast-axis converging lens 23 before reaching the working surface b, so as to converge the light beam in the fast-axis direction, so that the light beam finally falling on the working surface b is a point light spot.

[0096] In some embodiments, Figures 5 to 7 As shown, the housing 10 includes a first side plate 101 , a second side plate 102 , and a radiator 19 .

[0097] The radiator 19 is used to dissipate heat for the device; the first side plate 101 and the second side plate 102 are used to install, support and position other devices. The first side plate 101 and the second side plate 102 are arranged in parallel and spaced apart along the second direction x to form an accommodation space. Four screw through holes are respectively arranged on one side of the first side plate 101 and the second side plate 102 for installing the radiator 19. The radiator 19 is arranged in the accommodation space between the first side plate 101 and the second side plate 102; in some application scenarios, the radiator 19 can be made of high thermal conductivity copper material, and threaded holes can be processed on both sides of the radiator 19 for connection with the first side plate 101 and the second side plate 102. Heat dissipation fins can be processed under the radiator 19 to increase the heat exchange efficiency so as to more quickly export the heat generated by the laser generator 11. The radiator 19 also serves as a heat dissipation base for the laser generator 11. The limiting slots designed and processed on the radiator 19 can be used for limiting the installation of the laser generator 11.

[0098] The laser generator 11 may adopt a collimated TO package structure, which may include a laser emitting unit and a fast axis collimator 21 (i.e., the fast axis collimator 21 may be integrated in the laser generator 11). The tail PIN pin of the laser generator 11 is used to connect the positive and negative electrodes of an external power supply, which is used to power the laser generator 11, thereby being able to drive the laser generator 11 to emit laser light. The laser light beam is collimated by the fast axis collimator 21 and can directly pass through the slow axis imaging lens 22. In an application scenario, the laser light beam collimated by the fast axis collimator 21 has a divergence angle of about 10° in the slow axis direction, and is collimated parallel light in the fast axis direction.

[0099] A limiting step 100 can be set in the middle area of ​​the accommodating space formed by the first side plate 101 and the second side plate 102, which is used to limit the installation of the slow-axis imaging lens 22. For example, a plano-convex cylindrical mirror can be used as the slow-axis imaging lens 22, which is easy to process and install. The slow-axis imaging lens 22 is used to converge the laser light beam in the slow-axis direction, and the imaging point can be mapped to the working surface b using the reflector assembly 12.

[0100] In some embodiments, the mirror seat 124 of the reflector assembly 12 forms a rotation axis, which cooperates with the limiting hole on the first side plate 101 or the second side plate 102. The rotation axis and the limiting hole realize the limitation of the reflector assembly 12, so that the reflector assembly 12 can rotate freely around the rotation axis; a first abutment point 121 is set at the upper end of the mirror seat 124 for installing a spring as an elastic member 13, and the other end of the spring is fixedly connected to the first side plate 101 or the second side plate 102. The spring is in a compressed state when installed, and a second abutment point 122 is set at the lower end of the mirror seat 124 for abutting against the rotating member 14; a reflector 123 can be fixedly bonded to the mirror seat 124, and the reflector 123 can rotate around the rotation axis with the mirror seat 124, thereby changing the reflection angle and reflecting the laser to different positions.

[0101] A motor shaft is arranged on the other side of the first side plate 101 or the second side plate 102, one end of the motor shaft is connected to the motor, and the other end is connected to the ratchet and the sleeve structure, and the ratchet and the sleeve structure serve as the rotating member 14. The ratchet is composed of a plurality of concentric sector columns with different radii and the same arc angle, and the radius size corresponding to the sector columns decreases successively along the circumference of the ratchet, and a filter column is added between the sector column with the smallest radius and the sector column with the largest radius, and the outer peripheral wall of the ratchet (i.e., the arc-shaped outer peripheral wall of the plurality of sector columns) and the convex structure (with the second abutment point 122) at the lower end of the mirror seat 124 of the reflector assembly 12 can maintain hard contact under the action of the spring. In the process of the motor driving the ratchet to rotate around the motor shaft, the arc-shaped outer peripheral walls corresponding to the sector columns with different radii contact alternately with the mirror seat 124 of the reflector assembly 12, and the angle of the mirror seat 124 can be changed while changing the reflection angle of the reflector 123.

[0102] Furthermore, a light-blocking disk 17 is arranged on the ratchet, and the laser scanning device further comprises a photoelectric sensor 151, on which a signal generator 15 and a signal receiver 16 are arranged, and the photoelectric sensor 151 is arranged on the second side plate 102 or the first side plate 101. The light-blocking disk 17 is composed of a plurality of light-blocking strips 171, which are fixed coaxially with the ratchet and have the same angular velocity as the ratchet. The photoelectric sensor 151 senses the position of the light-blocking disk 17 through the light-blocking strips 171 and outputs an electrical signal to the control system, and the control system controls the laser generator 11 to emit pulsed light.

[0103] Furthermore, a glass rod can be set as a fast-axis converging lens 23. The glass rod can be installed at the light exit window of the outer shell of a laser scanning device such as a laser beauty instrument, and can replace the light exit window. The installation axis of the glass rod is the same as the slow-axis scanning direction. The glass rod can converge the fast-axis light onto the working surface b, and cooperate with the slow-axis imaging lens 22 to form a point light spot on the working surface b.

[0104] Different from the prior art, the present application can change the inclination angle of the reflector assembly by setting a rotating member and an elastic member to cooperate, thereby changing the light emitting direction of the reflector assembly. Specifically, the reflector assembly is abutted with different first abutting surfaces to change the distance between the abutting point on the first abutting surface in the first direction and the first abutting point of the reflector assembly, thereby accurately adjusting the distance between the second abutting point and the first abutting point of the reflector assembly in the first direction, thereby accurately adjusting the angle between the reflector assembly and the working surface, adjusting the light emitting direction of the reflector assembly, so as to achieve laser scanning on the working surface; and the rotation of the rotating member will cause multiple first abutting surfaces to alternately abut with the second abutting point of the reflector assembly, so that the change of the light emitting direction of the reflector assembly can be achieved by controlling the unidirectional rotation of the rotating member, and there is no need to frequently change the rotation direction of the rotating member, so it is easy to simplify the rotation control of the reflector assembly, reduce the probability of damage to the rotating member, and thus improve the reliability of the laser scanning device.

[0105] It is worth noting that the drawings in this article are only intended to illustrate the structural relationship and connection relationship of the product of the present application, and do not limit the specific structural dimensions of the product of the present application.

[0106] The above description is only an implementation method of the present application, and does not limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made using the contents of the present application specification and drawings, or directly or indirectly used in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A laser scanning device, characterized in that: The laser scanning device comprises: case; A laser generator, used for emitting laser light; A reflector assembly, arranged on the light output path of the laser generator, and used for reflecting the laser to a working surface; an elastic member, one end of which is fixed to the housing, and the other end of which is connected to the first abutment point of the reflector assembly; A rotating member is provided with a plurality of first abutting surfaces, and the rotating member rotates so that the plurality of first abutting surfaces abut against the second abutting point of the reflector assembly alternately, and when the plurality of first abutting surfaces abut against the second abutting point, the distances from the abutting points on each of the first abutting surfaces to the first abutting point in the first direction are different, so as to change the light emitting direction of the reflector assembly; Wherein, the reflector assembly and the working surface are arranged along the first direction; Wherein, when the rotating member rotates, the first abutting surface rotates to abut against the second abutting point, and the distance between the abutting point on the same first abutting surface and the first abutting point in the first direction is a fixed first distance value; Wherein, a plurality of the first abutment surfaces are arranged in sequence along the rotation direction of the rotating member, and the first distance value decreases along the rotation direction of the rotating member; The rotating member is further provided with a second abutting surface, the plurality of first abutting surfaces and the second abutting surface are sequentially arranged along the rotation direction of the rotating member, and the second abutting surface is connected between the first abutting surface having the largest first distance value and the first abutting surface having the smallest first distance value; When the second abutting surface abuts against the second abutting point, the distance between the abutting point on the second abutting surface and the first abutting point in the first direction gradually increases from the minimum first distance value to the maximum first distance value along the rotation direction, and at this time, the first distance value decreases along the rotation direction of the rotating member; Wherein, the laser scanning device further comprises: Signal generator; Signal receiver; A light blocking plate, forming a plurality of light blocking strips, wherein the light blocking plate rotates coaxially with the rotating member; During the rotation of the rotating member, when the light emitting direction of the reflector assembly changes, one of the light blocking bars rotates to between the signal generator and the signal receiver to block the signal receiver from receiving the light signal emitted by the signal generator; The control component controls the laser generator to stop emitting laser light in response to the signal receiver stopping receiving the optical signal.

2. The laser scanning device according to claim 1, characterized in that: The rotating member is arranged in a cylindrical shape, and its outer peripheral wall is divided into the plurality of first abutment surfaces and the second abutment surface. In a working state, the rotation axis of the rotating member is arranged perpendicular to the first direction, and the distance from the rotation axis to the first abutment point in the first direction is fixed and unchanged; The distance from the abutment point on the same first abutment surface to the rotation axis is a fixed first preset value, so that the first distance value is a fixed value; the first preset values ​​corresponding to different first abutment surfaces are different, so that the distances from the abutment points on different first abutment surfaces to the first abutment points in the first direction are different; the distance from the abutment point on the second abutment surface to the rotation axis gradually decreases along the rotation direction from the largest first preset value to the smallest first preset value.

3. The laser scanning device according to claim 1, characterized in that: The rotating member is arranged in a cylindrical shape, and one end wall thereof is divided into the plurality of first abutting surfaces and the second abutting surface. In a working state, the rotating axis of the rotating member is arranged parallel to the first direction; The distance from the abutment point on the same first abutment surface to the preset vertical plane of the rotation axis is a fixed second preset value, so that the first distance value is a fixed value; the second preset values ​​corresponding to different first abutment surfaces are different, so that the distances from the abutment points on different first abutment surfaces to the first abutment points in the first direction are different; the distance from the abutment point on the second abutment surface to the preset vertical plane gradually decreases along the rotation direction from the maximum second preset value to the minimum second preset value.

4. The laser scanning device according to claim 1, characterized in that: The arc values ​​corresponding to the plurality of first abutting surfaces in the rotation direction of the rotating member are equal.

5. The laser scanning device according to any one of claims 1 to 4, characterized in that: The laser scanning device also includes: The driving member is in transmission connection with the rotating member and is used for driving the rotating member to rotate around a rotation axis.

6. The laser scanning device according to claim 1, characterized in that: The reflector assembly is rotatably connected to the housing.

Images