Laser scanning mechanism for laser beauty instrument

Abstract

The utility model relates to a laser scanning mechanism for a laser beauty instrument. The laser scanning mechanism comprises a laser generator, a galvanometer swinging device and a focusing shaping lens group, the laser generator and the cooling fins are connected together and are installed and fixed. One or two galvanometer swinging devices are arranged on a propagation path of a laser beam generated by the laser generator; the galvanometer swinging device comprises a galvanometer motor and a reflecting mirror, and the reflecting mirror is driven by the galvanometer motor to swing; and a focusing shaping lens group is arranged on the rear side of the galvanometer swinging device. According to the utility model, the galvanometer swinging device is arranged on the light path of the laser, the laser beam is reflected through the reflecting mirror of the galvanometer motor, and finally, a focusing working point is formed after light beam shaping and focusing and is used for beautifying the skin. According to the utility model, the structure space for swinging the laser can be reduced, the driving power is reduced, and the galvanometer motor can be arranged away from the laser to avoid heat accumulation during working; two galvanometer swing devices can be arranged in the laser beauty instrument to form two-dimensional scanning motion.

Description

Technical Field

[0001] The utility model relates to a laser scanning mechanism applied in a handheld laser beauty instrument, belonging to the field of household beauty instruments. Background Art

[0002] Handheld laser beauty instrument is a device that uses laser technology to achieve beauty effects. It uses highly concentrated laser energy to achieve a variety of beauty effects through the principles of selective photothermal action, stimulating collagen reorganization, promoting metabolism, and inhibiting bacterial growth.

[0003] The handheld laser beauty instrument is mainly equipped with a laser light source. The laser beam it emits is shaped and gathered at a certain position outside the working head, directly reaching the skin to work. In order to achieve a cosmetic effect, the laser beam capacity needs to be high, but if such a high laser beam acts on a fixed position on the skin consistently, it is easy to cause burns to that part; therefore, the handheld laser beauty instrument needs to be kept moving during use, or the laser head needs to be moved to prevent the laser beam from continuously acting on a fixed part of the skin.

[0004] In response to the above needs, the applicant applied for and disclosed a handheld precision scanning laser beauty device with Chinese patent publication number CN105596081A, which installed the laser on an electromagnetic swing device, and realized the reciprocating swing of the laser head by controlling the electromagnetic coil, thereby realizing the reciprocating scanning of the laser beam. For the specific application of the relevant structure in the handheld home laser beauty instrument, reference can be made to the handheld home laser beauty instrument with Chinese patent publication number CN111557731A.

[0005] However, since the laser generator (or laser source) needs to dissipate heat during operation, a heat sink needs to be installed, so the overall volume is relatively large. Installing it on the swing mechanism requires a high driving power for the swing mechanism. The laser generator is a precision component, and the vibration generated by long-term swinging work will affect its service life and stability of use.

[0006] Therefore, the laser generator is preferably firmly mounted and fixed in the housing of the handheld laser beauty device; this requires the design of an additional mechanism to realize the laser scanning work. Utility Model Content

[0007] The purpose of the utility model is to provide a laser scanning mechanism for a laser beauty instrument, to fix the laser generator, to set a galvanometer device on the optical path of the laser, to reflect and angularly deflect the laser beam through a vibrating reflector, thereby realizing linear scanning or two-dimensional scanning of the laser beam, and avoiding the laser beam being focused on a fixed point for a long time, causing laser burns.

[0008] In order to achieve the above-mentioned utility model object, the utility model provides a laser scanning mechanism for a laser beauty instrument, including a laser generator, a galvanometer swing device, and a focusing and shaping lens group;

[0009] The laser generator is connected to the heat sink and installed and fixed;

[0010] One or two galvanometer oscillating devices are provided on the propagation path of the laser beam generated by the laser generator;

[0011] The galvanometer oscillating device comprises a galvanometer motor and a reflector, and the reflector is driven by the galvanometer motor to oscillate;

[0012] A focusing and shaping lens group is arranged at the rear side of the galvanometer swing device.

[0013] The laser beam emitted by the laser generator is irradiated onto the reflector of the galvanometer oscillating device, and after being reflected and diverted once or twice, it is irradiated onto the focusing and shaping lens group. The focusing and shaping lens group gathers the beam and focuses it to form a working laser spot, which acts on the skin to achieve a laser treatment effect.

[0014] As a further improvement of the utility model, a collimating lens may be provided at the light outlet of the laser generator.

[0015] The collimating lens performs the first shaping of the laser beam to form a parallel propagating beam.

[0016] As a further improvement of the present invention, a window glass is provided on the rear side of the focusing and shaping lens assembly.

[0017] The window glass is used for isolation so that foreign matter cannot enter the interior of the device; and the window glass is flat glass, which is convenient for the laser beam to pass through and form a focusing working point outside the window glass.

[0018] As a further improvement of the present invention, the focusing and shaping lens group includes a double convex spherical lens, a double concave spherical lens, and a concave-convex spherical lens in sequence.

[0019] As a further improvement of the utility model, a fixed reflector is provided on the laser propagation path.

[0020] The fixed reflecting mirror reflects the laser light emitted by the laser generator and then emits it to the reflecting mirror of the galvanometer oscillating device.

[0021] Furthermore, the fixed reflector is a light-transmitting mirror, and a red light indicator is provided behind the mirror layer of the fixed reflector.

[0022] The red light indicator emits red light, which passes through the light-transmitting mirror of the fixed reflector and is emitted toward the reflector of the galvanometer swing device together with the laser. It is reflected by the reflector and then emitted, thereby forming a red light spot at the laser focus point, making it easy to know the specific position of the current laser focus working point.

[0023] Furthermore, the angle between the mirror surface of the fixed reflector and the laser beam emitted by the laser generator is 45°.

[0024] Fixed mirrors steer the laser beam at right angles, thus simplifying the optical path design.

[0025] As a further improvement of the present invention, the laser scanning mechanism of the laser beauty instrument adopts a two-dimensional scanning mechanism and is provided with two sets of the galvanometer swing devices, namely an X-axis galvanometer device and a Y-axis galvanometer device.

[0026] Furthermore, the galvanometer motor of the X-axis galvanometer device and the galvanometer motor of the Y-axis galvanometer device are perpendicular to each other and are spaced apart.

[0027] Furthermore, the operating frequency of the galvanometer motor of the X-axis galvanometer device is different from the operating frequency of the galvanometer motor of the Y-axis galvanometer device.

[0028] Furthermore, the vibration operating frequency of the galvanometer motor of the X-axis galvanometer device and the vibration operating frequency of the galvanometer motor of the Y-axis galvanometer device are set within 500 Hz.

[0029] Furthermore, the vibration angle amplitude of the X-axis galvanometer motor of the X-axis galvanometer device to the X-axis reflector is the same as the vibration angle amplitude of the Y-axis galvanometer motor of the Y-axis galvanometer device to the Y-axis reflector.

[0030] Furthermore, the vibration angle amplitude of the galvanometer motor of the X-axis galvanometer device to the X-axis reflector and the vibration angle amplitude of the galvanometer motor of the Y-axis galvanometer device to the Y-axis reflector are set within 20°.

[0031] The laser beauty instrument of the utility model uses a laser scanning mechanism, and a galvanometer swing device is arranged on the optical path of the laser. The laser beam is reflected by the reflector mirror of the galvanometer motor. After the first reflection, a linear vibration laser scan is formed. After the second reflection, a two-dimensional vibration laser scan is formed. Finally, after the beam is shaped and focused, it is emitted through the window glass to form a focusing working point outside the window glass for skin beauty.

[0032] The laser scanning mechanism of the laser beauty instrument of the utility model adopts a galvanometer motor design, which can reduce the structural space for laser swing and reduce the driving power, and the galvanometer motor can be set away from the laser to avoid heat accumulation during operation; two galvanometer swing devices can be set in the laser beauty instrument to form the laser beam into a two-dimensional scanning motion, thereby expanding the working range of the laser beam. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 It is a structural schematic diagram of the linear laser scanning mechanism of the utility model;

[0034] Figure 2 It is a schematic diagram of the overall structure of the galvanometer device of the utility model;

[0035] Figure 3 The overall structure of the laser scanning mechanism of the laser beauty instrument of the utility model is shown in FIG. Figure 1 ;

[0036] Figure 4 The overall structure of the laser scanning mechanism of the laser beauty instrument of the utility model is shown in FIG. Figure 2 . DETAILED DESCRIPTION

[0037] The specific implementation of the utility model is further described in detail below with reference to the accompanying drawings.

[0038] The laser scanning mechanism of the laser beauty instrument of the utility model has a linear scanning structure such as Figure 1 As shown, the two-dimensional scanning structure is as follows Figure 3 , Figure 4 As shown, it is mainly applied to Figure 3 The galvanometer device shown in the figure; the specific structure of the galvanometer device can refer to a new type of galvanometer motor with a Chinese patent publication number of CN218997848U applied and published by the applicant, by setting a reflector 92 of the galvanometer motor 91 on the optical path of the laser, the laser beam is reflected, and after one reflection, a linear vibration laser scan is formed (such as Figure 1 As shown), after secondary reflection, a two-dimensional vibrating laser scan is formed (as shown Figure 3 , Figure 4 As shown), the light is finally shaped and focused before being emitted through the window glass 7, forming a focusing working point outside the window glass 7 for skin beauty.

[0039] The laser scanning mechanism for the laser beauty instrument of the utility model comprises a laser generator 1, which is connected to a heat sink 11 and fixed in a housing of the beauty instrument; a collimating lens 2 may be provided at the light outlet of the laser generator 1 to perform a first shaping of the laser beam to form a parallel propagating light beam; the laser beam is irradiated onto a reflecting mirror 92 of a galvanometer swing device 9 to be reflected and deflected, and after a first reflection and deflection, or a second reflection and deflection, the light beam is gathered through a focusing and shaping lens group 6, and finally emitted through a window glass 7 to form a focusing working point outside the window glass 7.

[0040] During use, the galvanometer motor 91 is controlled to move, driving the reflector 92 to swing back and forth, causing the laser beam to swing due to the change in reflection angle. Finally, after passing through the focusing and shaping lens group 6 and the window glass 7, the focusing working point formed outside the window glass 7 also makes a scanning movement.

[0041] The focusing shaping lens assembly 6 includes a biconvex spherical mirror 61 , a biconcave spherical mirror 62 , and a concave-convex spherical mirror 63 in sequence.

[0042] As a further improvement of the utility model, Figure 3 , Figure 4 As shown, a fixed reflector 3 is provided on the laser propagation path, and the fixed reflector 3 reflects the laser emitted by the laser generator 1 and directs it toward the reflector 92 of the galvanometer oscillating device 9 .

[0043] The fixed reflector 3 is a light-transmitting mirror, and a red light indicator 8 is provided behind its mirror layer; the red light indicator 8 emits red light, passes through the light-transmitting mirror of the fixed reflector 3, and then is emitted to the reflector 92 of the galvanometer swing device 9 together with the laser, and is reflected by the reflector 92 and then emitted, thereby forming a red light spot at the laser focusing point, which makes it easy to know the specific position of the current laser focusing working point.

[0044] The angle between the mirror surface of the fixed reflector 3 and the laser beam emitted by the laser generator 1 is preferably 45°, so that the laser beam can be turned at right angles, simplifying the optical path design.

[0045] As a further improvement of the present invention, the laser scanning mechanism of the laser beauty instrument of the present invention preferably adopts a two-dimensional scanning mechanism, that is, two sets of the galvanometer oscillating devices are provided, namely an X-axis galvanometer device 4 and a Y-axis galvanometer device 5; the galvanometer motors 91 of the two sets of the galvanometer oscillating devices are preferably perpendicular to each other and arranged at intervals.

[0046] The operating frequency of the galvanometer motor 91 of the X-axis galvanometer device 4 is the same as the operating frequency of the galvanometer motor 91 of the Y-axis galvanometer device 5, which will cause the focused laser beam after secondary reflection and deflection by the galvanometer swing device to form a linear swing, and the envisioned two-dimensional vibration laser scanning cannot be achieved.

[0047] Therefore, preferably, the operating frequency of the galvanometer motor 91 of the X-axis galvanometer device 4 is different from the operating frequency of the galvanometer motor 91 of the Y-axis galvanometer device 5, so that the laser beam gathered after secondary reflection and deflection by the galvanometer swing device forms a two-dimensional vibrating laser scan, and will not be concentrated on a fixed point or a line. The vibration operating frequency of the galvanometer motor 91 is generally controlled within 500Hz, and a single scanning cycle can be shortened to 0.002 seconds; the scanning method can make the energy of the laser beam more concentrated and the beauty effect better; and the fast scanning frequency allows the laser beam to quickly complete the two-dimensional scan and cover a larger area. As the operator moves the laser beauty instrument, it can cover the entire skin area that needs beauty treatment more quickly.

[0048] Since the same galvanometer motor 91 design is adopted, the vibration angle amplitude of the galvanometer motor 91 of the X-axis galvanometer device 4 to the X-axis reflector 92 is the same as the vibration angle amplitude of the galvanometer motor 91 of the Y-axis galvanometer device 5 to the Y-axis reflector 92. Limited by the size of the focusing and shaping lens group 6 and the window glass 7, the vibration angle amplitude is controlled within ±20°.

[0049] The preferred embodiments of the present invention have been specifically described above, but the present invention is not limited to the described embodiments. Those skilled in the art may make various equivalent modifications or substitutions without violating the spirit of the present invention, and these equivalent modifications or substitutions are all within the scope defined by the claims of this application.

Claims

1. A laser scanning mechanism for a laser beauty instrument, characterized in that: It includes a laser generator, a galvanometer swing device, and a focusing and shaping lens group; The laser generator is connected to the heat sink and installed and fixed; One or two galvanometer oscillating devices are provided on the propagation path of the laser beam generated by the laser generator; The galvanometer oscillating device comprises a galvanometer motor and a reflector, and the reflector is driven by the galvanometer motor to oscillate; A focusing and shaping lens group is arranged at the rear side of the galvanometer swing device.

2. The laser scanning mechanism for a laser beauty instrument according to claim 1, characterized in that: The focusing and shaping lens group includes a double convex spherical lens, a double concave spherical lens, and a concave-convex spherical lens in sequence.

3. The laser scanning mechanism for a laser beauty instrument according to claim 1, characterized in that: A fixed reflector is provided on the laser propagation path; The fixed reflector is a light-transmitting mirror, and a red light indicator is arranged behind the mirror layer of the fixed reflector.

4. The laser scanning mechanism for a laser beauty instrument as claimed in claim 3, characterized in that: The angle between the mirror surface of the fixed reflector and the laser beam emitted by the laser generator is 45°.

5. The laser scanning mechanism for a laser beauty instrument according to claim 1, characterized in that: The laser scanning mechanism of the laser beauty instrument adopts a two-dimensional scanning mechanism and is provided with two sets of galvanometer swing devices, namely an X-axis galvanometer device and a Y-axis galvanometer device.

6. The laser scanning mechanism for a laser beauty instrument as claimed in claim 5, characterized in that: The galvanometer motor of the X-axis galvanometer device and the galvanometer motor of the Y-axis galvanometer device are perpendicular to each other and are spaced apart.

7. The laser scanning mechanism for a laser beauty instrument according to claim 5 or 6, characterized in that: The operating frequency of the galvanometer motor of the X-axis galvanometer device is different from the operating frequency of the galvanometer motor of the Y-axis galvanometer device.

8. The laser scanning mechanism for a laser beauty instrument according to claim 7, characterized in that: The vibration operating frequency of the galvanometer motor of the X-axis galvanometer device and the vibration operating frequency of the galvanometer motor of the Y-axis galvanometer device are set within 500 Hz.

9. The laser scanning mechanism for a laser beauty instrument according to claim 5 or 6, characterized in that: The vibration angle amplitude of the X-axis galvanometer motor of the X-axis galvanometer device to the X-axis reflector is the same as the vibration angle amplitude of the Y-axis galvanometer motor of the Y-axis galvanometer device to the Y-axis reflector.

10. The laser scanning mechanism for a laser beauty instrument according to claim 9, characterized in that: The vibration angle amplitude of the galvanometer motor of the X-axis galvanometer device to the X-axis reflector and the vibration angle amplitude of the galvanometer motor of the Y-axis galvanometer device to the Y-axis reflector are set within 20°.

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