CN111939485B - Laser dot matrix system and laser dot matrix therapeutic instrument - Google Patents
Laser dot matrix system and laser dot matrix therapeutic instrument Download PDFInfo
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- CN111939485B CN111939485B CN202010765086.2A CN202010765086A CN111939485B CN 111939485 B CN111939485 B CN 111939485B CN 202010765086 A CN202010765086 A CN 202010765086A CN 111939485 B CN111939485 B CN 111939485B
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
- A61N5/00—Radiation therapy
- A61N5/06—Radiation therapy using light
- A61N5/067—Radiation therapy using light using laser light
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
- A61N5/00—Radiation therapy
- A61N5/06—Radiation therapy using light
- A61N5/0613—Apparatus adapted for a specific treatment
- A61N5/0616—Skin treatment other than tanning
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
- A61N5/00—Radiation therapy
- A61N5/06—Radiation therapy using light
- A61N2005/0632—Constructional aspects of the apparatus
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
- A61N5/00—Radiation therapy
- A61N5/06—Radiation therapy using light
- A61N2005/0664—Details
Abstract
The invention provides a laser dot matrix system and a laser dot matrix therapeutic apparatus, and belongs to the technical field of semiconductor lasers. The laser dot matrix system comprises a laser source and a scanning optical device arranged in the light emitting direction of the laser source, wherein the scanning optical device is driven to respectively reciprocate along a first direction and a second direction which are vertical to the light emitting direction, so that laser beams form a two-dimensional laser dot matrix at a scanning position through the scanning optical device, and the first direction is vertical to the second direction. The laser lattice system of the invention can form various different two-dimensional laser lattices with variable sizes and ranges so as to improve the diversity of the formed laser lattices.
Description
Technical Field
The invention relates to the technical field of semiconductor lasers, in particular to a laser dot matrix system and a laser dot matrix therapeutic apparatus.
Background
The laser lattice refers to a multi-laser-spot array which presents laser beams in a lattice state through pulse, scanning and other modes, and the laser lattice can be used for laser surgery with high fineness. Moreover, as proved by research and experiments, the laser lattice has the functions of removing wrinkles, removing freckles, compacting, accelerating healing and improving tissue regeneration when acting on human skin, so that the existing laser lattice is increasingly applied to the aspects of reshaping, beautifying and the like, the laser lattice irradiates on the skin to form dense and ordered micropores and directly penetrates into the dermis layer of the skin to repair and stimulate, and the effects of removing freckles and wrinkles of the skin and the like are achieved.
Because the position and the contained range of the affected part needing to be treated and repaired are different, the laser dot matrix system in the prior art is difficult to form laser dot matrixes with different sizes and ranges, so that the application range of the laser dot matrix therapeutic apparatus is limited.
Disclosure of Invention
The invention aims to provide a laser dot matrix system and a laser dot matrix therapeutic apparatus, wherein the laser dot matrix system can form various different two-dimensional laser dot matrixes with variable sizes and ranges so as to improve the diversity of the formed laser dot matrixes.
The embodiment of the invention is realized by the following steps:
in one aspect of the embodiments of the present invention, a laser dot matrix system is provided, including a laser source and a scanning optical device disposed in a light emitting direction of the laser source, where the scanning optical device is driven to reciprocate along a first direction and a second direction perpendicular to the light emitting direction, respectively, so that a laser beam passes through the scanning optical device to form a two-dimensional laser dot matrix at a scanning position, where the first direction is perpendicular to the second direction.
Optionally, the scanning optical device is a scanning lens, the light incident surface of the scanning lens includes a plurality of rows of first micro-scanning units arranged in parallel and continuously along a first direction, the light emergent surface of the scanning lens includes a plurality of rows of second micro-scanning units arranged in parallel and continuously along a second direction, and laser beams passing through two adjacent rows of the first micro-scanning units or the second micro-scanning units are emitted to different angles.
Optionally, the first micro scanning unit and/or the second micro scanning unit is a cylindrical mirror or a sawtooth prism.
Optionally, the scanning lens includes a first scanning lens and a second scanning lens sequentially disposed along the light emitting direction of the laser source, the first micro scanning unit is disposed on the light incident side or the light emitting side of the first scanning lens, the second micro scanning unit is disposed on the light emitting side or the light incident side of the second scanning lens, and the first scanning lens and the second scanning lens are attached to each other or disposed at an interval.
Alternatively, the laser beams passing through a column of first micro-scanning units exit at the same angle in the first direction, and/or the laser beams passing through a column of second micro-scanning units exit at the same angle in the second direction.
Optionally, the first micro scanning unit is disposed on the scanning lens along the second direction axis symmetrically, and the second micro scanning unit is disposed on the scanning lens along the first direction axis symmetrically.
Optionally, the first micro scanning unit is divided into a plurality of sub-units along the second direction, and/or the second micro scanning unit is divided into a plurality of sub-units along the first direction, the sub-units are cylindrical units, and the sub-units have curvatures in the first direction and the second direction.
Optionally, the scanning optical device is a scanning lens, the light incident surface or the light emergent surface of the scanning lens includes a plurality of micro-transmission units, each micro-transmission unit is formed by splicing a first transmission unit and a second transmission unit, the first transmission unit is used for refracting the incident laser beam in a first direction and then transmitting the incident laser beam, and the second transmission unit is used for refracting the incident laser beam in a second direction and then transmitting the incident laser beam.
Optionally, the scanning optical device is a scanning mirror, a reflection surface of the scanning mirror includes a plurality of micro reflection units, each micro reflection unit is formed by splicing a first reflection unit and a second reflection unit, the first reflection unit is used for reflecting the laser beam along a first direction, and the second reflection unit is used for reflecting the laser beam along a second direction.
Optionally, the first reflecting unit and the second reflecting unit are respectively a first prism surface and a second prism surface, the included angle angles of the plurality of first prism surfaces and the main optical axis are different, and the included angle angles of the plurality of second prism surfaces and the main optical axis are different.
Optionally, the first reflecting unit and the second reflecting unit are a first cambered surface and a second cambered surface respectively, and the first reflecting unit and the second reflecting unit have curvatures in a first direction and a second direction respectively.
Optionally, a collimating lens group is further disposed between the laser source and the scanning optical device, and the collimating lens group includes a fast axis collimating lens and a slow axis collimating lens that are sequentially disposed along the light exit direction, and is configured to perform fast axis collimation and slow axis collimation on the laser beam emitted from the laser source, respectively.
Optionally, the scanning optical device is disposed in a fixed frame, a stepping motor is disposed on the fixed frame, and a driving end of the stepping motor is connected to the scanning optical device to drive the scanning optical device to move along the first direction and/or the second direction.
In another aspect of the embodiments of the present invention, a method for forming a laser lattice is provided, including: the scanning optical device moves along a first direction and a second direction which are perpendicular to each other respectively; the laser beams are scanned and emitted by the moving scanning optical device and form a two-dimensional laser dot matrix at the scanning position.
In another aspect of the embodiments of the present invention, a laser lattice therapy apparatus is provided, which includes the laser lattice system of any one of the above-mentioned embodiments.
The embodiment of the invention has the beneficial effects that:
the embodiment of the invention provides a laser dot matrix system, which comprises a laser source and a scanning optical device arranged in the light emitting direction of the laser source, wherein the scanning optical device is driven to respectively reciprocate along a first direction and a second direction which are vertical to the light emitting direction, the first direction is vertical to the second direction, and the scanning optical device respectively reciprocates along the first direction and the second direction, which is equivalent to the fact that the scanning optical device can move to any position in a two-dimensional space of a plane where the scanning optical device is located, so that a laser beam can form a two-dimensional laser dot matrix at a scanning position after being scanned by the scanning optical device at the two-dimensional space moving position. By providing different driving forces to the scanning optical device to form different scanning paths of the scanning optical device, two-dimensional laser lattices with various required lattice shapes can be correspondingly formed at scanning positions for different use requirements. The laser dot matrix system provided by the invention is applied to a laser dot matrix therapeutic apparatus, can be widely applied to medical cosmetology and laser surgery, and can also be applied to the related fields of detection and measurement through the laser dot matrix.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
Fig. 1 is a schematic structural diagram of a laser lattice system at a first viewing angle according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a laser lattice system at a second viewing angle according to an embodiment of the present invention;
FIG. 3 is a scanning laser dot matrix formed at a scanning location by the laser dot matrix system;
FIG. 4 is a schematic view of a scanning lens according to an embodiment of the present invention;
FIG. 5 is a schematic diagram of a light incident surface of a scanning lens including a plurality of rows of first micro-scanning units according to an embodiment of the present invention;
FIG. 6 is a second schematic view of a scanning lens according to an embodiment of the present invention;
FIG. 7 is a third exemplary diagram of a scanning lens according to the present invention;
fig. 8 is a schematic structural diagram of a laser lattice system according to an embodiment of the present invention;
fig. 9 is a schematic structural diagram of a laser lattice system according to an embodiment of the present invention;
FIG. 10 is a flowchart of a method for forming a laser dot matrix according to an embodiment of the present invention;
FIG. 11 is a fourth schematic view of a scanning lens according to an embodiment of the present invention;
FIG. 12 is a fifth exemplary view of a scanning lens according to the present invention;
FIG. 13 is a schematic diagram of a scanning lens according to an embodiment of the present invention, in which the light incident surface includes one of a plurality of micro-transmission units;
FIG. 14 is a second schematic view of a scanning lens according to an embodiment of the present invention, in which the light incident surface includes a plurality of micro-transmission units;
FIG. 15 is a schematic diagram of a scanning mirror structure of a scanning optical device according to an embodiment of the present invention;
FIG. 16 is a second schematic view of a scanning mirror as an embodiment of the scanning optical device.
Icon: 10-a laser source; 20-a scanning lens; 201-a first micro-scanning unit; 202-a second micro-scan cell; 203-cylinder cells; 21-a first scanning lens; 22-a second scanning lens; 23-a cylindrical lens; 30-a collimating lens group; 31-fast axis collimating mirror; 32-slow axis collimating mirror; a-a first direction; b-a second direction.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, as presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined or explained in subsequent figures.
In the description of the present invention, the terms "center", "vertical", "horizontal", and the like indicate orientations or positional relationships based on orientations or positional relationships shown in the drawings or orientations or positional relationships conventionally laid out when the products of the present invention are used, and are only for convenience of description and simplification of description, but do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used merely to distinguish one description from another, and are not to be construed as indicating or implying relative importance.
Fig. 1 is a schematic structural diagram of a laser dot matrix system according to an embodiment of the present invention, and referring to fig. 1, the embodiment of the present invention provides a laser dot matrix system, which includes a laser source 10 and a scanning optical device disposed in a light emitting direction of the laser source 10, wherein the scanning optical device is driven to reciprocate along a first direction a perpendicular to the light emitting direction to form a laser dot matrix along the first direction a at a scanning position. Fig. 2 is a top view of fig. 1, and referring to fig. 2, since the first direction a is perpendicular to the second direction B, as can be seen from the viewing angle of fig. 2, the scanning optical device can also be driven to reciprocate along the second direction B perpendicular to the light emitting direction, and the movement of the scanning optical device in the first direction a and the second direction B is synthesized, and the laser beam can form a two-dimensional laser dot matrix at the scanning position after being emitted by the scanning optical device.
The scanning optical device is an optical device capable of processing incident laser beams, and the scanning optical device is driven to move along a direction perpendicular to the light emitting direction. The scanning optical device is a scanning lens 20 as shown in fig. 1, and for example, the scanning optical device may also be a scanning mirror. The following description will be made in detail by taking the scanning optical device as the scanning lens 20 as an example, with reference to the drawings.
Fig. 3 is a two-dimensional laser dot matrix diagram formed at a scanning position by a laser beam after the scanning lens 20 is driven by the laser dot matrix system according to the embodiment of the present invention to reciprocate along the first direction a and the second direction B perpendicular to the light emitting direction. Referring to fig. 3, it should be noted that, in the embodiment of the present invention, how the scanning lens 20 performs the reciprocating scanning along the first direction a and along the second direction B, and the scanning range and the scanning track of the scanning lens 20 are not specifically limited. Since the first direction a is perpendicular to the second direction B, and the first direction a and the second direction B are both perpendicular to the light emitting direction of the laser source 10, it can be known that the scanning lens 20 scans along the first direction a and the second direction B perpendicular to each other on the surface where the mirror surface is located.
It should be noted that scanning along the first direction a and the second direction B which are perpendicular to each other is understood that the motion trajectory includes a first direction component and a second direction component, and any trajectory motion in a plane formed by the first direction and the second direction belongs to the motion along the first direction a and the second direction B of the present invention. Because the actual use requirements of the laser dot matrix are different, and the shapes of the required laser dot matrix are very various, in the laser dot matrix system according to the embodiment of the present invention, according to the special shape of the required laser dot matrix, the movement track and path of the movement of the scanning lens 20 can be arbitrarily combined and set along the first direction a and the second direction B, for example, the scanning lens 20 is made to make short and frequent alternate movement between the first direction a and the second direction B, so that the laser dot matrix can be formed in a diagonal direction, for example, the scanning lens 20 is made to make short and frequent alternate movement between the first direction a and the second direction B, and at the same time, regular zeroing setting is performed on the actual displacement of the first direction a and the actual displacement of the second direction B, and the laser dot matrix can also be in a closed ring shape. As described above, other laser lattice patterns formed by scanning in the first direction a and the second direction B are within the scope of the embodiments of the present invention.
The laser beam emitted from the laser light source 10 has a fast axis component and a slow axis component perpendicular to each other on a surface perpendicular to the light emitting direction, and therefore, the first direction a shown in fig. 1 can be understood as a fast axis direction, and the second direction B shown in fig. 2 can be understood as a slow axis direction. The scanning lens 20 may reciprocally scan in the fast axis direction and the slow axis direction of the laser beam, respectively, to form a two-dimensional laser lattice as shown in fig. 3.
It should be noted that, in the laser dot matrix system according to the embodiment of the present invention, the form and parameters of the laser source 10 are not particularly limited, and for example, the laser source 10 commonly used in the prior art may be divided into a gas laser, a solid laser, a semiconductor laser, a dye laser, and the like according to the working medium. Or other laser sources 10 capable of emitting laser beams according to the conditions may be further included, which is not specifically limited in the embodiment of the present invention, as long as the laser beams emitted by the laser sources 10 can form a light spot so as to form a two-dimensional laser dot matrix at a scanning position after passing through the scanning lens 20 that reciprocates to scan in the fast axis direction and the slow axis direction. For example, the laser lattice system according to the embodiment of the present invention may be specifically designed and selected for the application of the wavelength and intensity of the laser beam required for laser surgery, anti-wrinkle cosmetology, or industrial detection.
Moreover, the specific presentation form of the scanning lens 20 in the laser dot matrix system according to the embodiment of the present invention may include a plurality of forms, which is not particularly limited in the embodiment of the present invention, as long as the scanning lens 20 can scan the laser beam to form a two-dimensional laser dot matrix in the reciprocating motion along the fast axis direction and the slow axis direction through the scanning lens 20. For example, the two-dimensional laser lattice can be formed by providing refraction surfaces with different angles in the light transmission region of the scanning lens 20, so that the laser beam is refracted by the refraction surfaces with different angles to form corresponding light spots at the scanning position during the scanning process. The specific arrangement and functional function of the scanning lens 20 are described in detail below.
The embodiment of the invention provides a laser dot matrix system, which comprises a laser source 10 and a scanning optical device (a scanning lens 20) arranged in the light emitting direction of the laser source 10, wherein the scanning lens 20 is driven to reciprocate respectively along a first direction A and a second direction B which are perpendicular to the light emitting direction, the first direction A is perpendicular to the second direction B, and the scanning lens 20 reciprocates respectively along the first direction A and the second direction B, which is equivalent to a two-dimensional space moving position of a plane where the scanning lens 20 is located, so that a laser beam can form a two-dimensional laser dot matrix at a scanning position after passing through the scanning of the scanning lens 20 at the two-dimensional space moving position. By providing different driving forces to the scanning lens 20 to form different scanning paths of the scanning lens 20, two-dimensional laser lattices of various required lattice shapes can be correspondingly formed at scanning positions for different use requirements. The laser dot matrix system provided by the invention is applied to a laser dot matrix therapeutic apparatus, can be widely applied to medical cosmetology and laser surgery, and can also be applied to the related fields of detection and measurement through the laser dot matrix.
Optionally, fig. 4 is a schematic structural diagram of the scanning lens 20, as shown in fig. 4, the scanning optical device is the scanning lens 20, the light incident surface of the scanning lens 20 includes a plurality of rows of first micro-scanning units 201 continuously disposed in parallel along a first direction a, and the light emergent surface of the scanning lens 20 includes a plurality of rows of second micro-scanning units 202 continuously disposed in parallel along a second direction B, so that the laser beams passing through two adjacent rows of the first micro-scanning units 201 or the second micro-scanning units 202 are refracted and emitted toward different angles. Since the two adjacent columns of the first micro-scanning units 201 can emit the passing laser beams at different angles, and the two adjacent columns of the second micro-scanning units 202 can also emit the passing laser beams at different angles, the laser beams entering the scanning lens 20 are refracted by the first micro-scanning units 201 along the first direction a and the second micro-scanning units 202 along the second direction B at the same time to form the final laser beams emitted through the scanning lens 20.
Optionally, the first micro-scanning unit 201 and/or the second micro-scanning unit 202 is a cylindrical mirror or a sawtooth prism. The scanning lens 20 includes a first scanning lens 21 and a second scanning lens 22 sequentially disposed along the light emitting direction of the laser source 10, the first micro scanning unit 201 is disposed on the light incident side or the light emitting side of the first scanning lens 21, the second micro scanning unit 202 is disposed on the light emitting side or the light incident side of the second scanning lens 22, and the first scanning lens 21 and the second scanning lens 22 are attached to each other or disposed at an interval.
Alternatively, the laser beams passing through a column of the first micro-scanning units 201 are emitted at the same angle in the first direction a, and/or the laser beams passing through a column of the second micro-scanning units 202 are emitted at the same angle in the second direction B.
The first and second micro-scanning units 201 and 202 may be cylindrical mirrors or sawtooth prisms, respectively. The cylindrical mirror is a mirror body (as shown in fig. 8) with a cambered surface, when the first micro scanning unit 201 or the second micro scanning unit 202 is a cylindrical mirror, the radians of a column of cylindrical mirrors are the same, so that a column of laser beams along the second direction B is emitted to the same angle of the first direction a when passing through the same column of cylindrical mirrors; the surface of the sawtooth prism is a plane with an inclination angle (as shown in fig. 4), and when the first micro scanning unit 201 or the second micro scanning unit 202 is a sawtooth prism, the inclination angles of the planes of the sawtooth prisms are the same, and a row of laser beams in the second direction B can be emitted to the same angle in the first direction a when passing through the same row of sawtooth prisms.
The function of refracting and emitting laser beams required by the first micro scanning unit 201 and the second micro scanning unit 202 can be realized no matter the surface of the cylindrical mirror is a cambered surface or the surface of the sawtooth prism is an inclined plane. Moreover, when the scanning lens 20 includes the first scanning lens 21 and the second scanning lens 22 which are sequentially disposed, the first scanning lens 21 and the second scanning lens 22 may be disposed in a mutually attached manner or disposed at intervals according to the overall structure and space conditions of the apparatus, the first micro-scanning unit 201 may be disposed on the light-in side of the first scanning lens 21, or may be disposed on the light-out side of the first scanning lens 21, and similarly, the second micro-scanning unit 202 may be disposed on the light-out side of the second scanning lens 22, or may be disposed on the light-in side of the second scanning lens 22, and those skilled in the art may specifically select and set the above setting modes according to the actual needs of the apparatus and the objective conditions such as the structural space. The following is a stepwise illustration with reference to the accompanying drawings.
Fig. 5 is a schematic diagram of the scan lens 20 according to the embodiment of the invention, in which the light incident surface includes a plurality of rows of first micro-scan cells 201. As shown in fig. 5, taking the first micro scanning unit 201 disposed on the light incident surface of the scanning lens 20 as an example, the light incident surface of the scanning lens 20 includes a plurality of rows of first micro scanning units 201 disposed in parallel and in series along the first direction a, and each row of first micro scanning units 201 (shown by a dashed line in fig. 5) is composed of a plurality of sub-units continuous along the second direction B. As shown in fig. 4, in the present embodiment, the incident surface angles of the first micro-scanning units 201 in each row are the same, the incident surfaces of the first micro-scanning units 201 in two adjacent rows are different, when the scanning lens 20 reciprocates along the first direction a, the laser beams emitted from the laser source 10 sequentially irradiate the first micro-scanning units 201 in the different rows, and the incident surfaces of the first micro-scanning units 201 in two adjacent rows are different in angle, so that the emitted laser beams can present the light spots of the array at the scanning position. The different angles of the incident surface of the first micro-scanning unit 201 mean that the included angles between the laser beam and the incident surface of the first micro-scanning unit 201 are different. If the angles of the incident surfaces of the first micro scanning units 201 are the same, the incident surface of the scanning lens formed by the first micro scanning units 201 is a smooth plane, and thus, even if the scanning lens 20 reciprocates along the first direction a, the laser beam emitted from the laser source 10 cannot form a laser dot matrix when passing through the reciprocating scanning lens 20. Therefore, the incident surfaces of the multiple rows of first micro-scanning units 201 sequentially connected in the first direction a are at different angles, so that when the scanning lens 20 reciprocates in the first direction a, the laser beams are cyclically scanned and irradiated on the first micro-scanning units 201 at different angles to emit laser lattices in the first direction a.
Similarly, as shown in fig. 4, the light emitting surface of the scanning lens 20 includes a plurality of rows of second micro-scanning units 202 arranged in parallel and in series along the second direction B, and the light emitting surfaces of two adjacent rows of second micro-scanning units 202 are at different angles, so that when the scanning lens 20 reciprocates along the second direction B, the laser beams emitted from the laser source 10 sequentially irradiate the second micro-scanning units 202 in different rows to emit a laser dot matrix along the second direction B.
Fig. 6 is a second schematic structural diagram of the scanning lens 20, and as shown in fig. 6, when the scanning lens 20 is a structure in which the first micro scanning unit 201 and the second micro scanning unit 202 are both sawtooth prisms, and the scanning lens 20 respectively reciprocates in the first direction a and the second direction B, laser beams emitted from the laser source 10 can be refracted and emitted correspondingly in the fast axis direction and the slow axis direction according to different angles of the rows of the first micro scanning units 201 and the rows of the second micro scanning units 202 to form a two-dimensional laser dot matrix in a desired form at a scanning position.
It should be noted that, as shown in fig. 5, taking the first micro scanning unit 201 disposed on the light incident surface of the scanning lens 20 as an example, the first micro scanning unit 201 may be formed by splicing and fixing the first micro scanning unit 201 on the light incident surface of the scanning lens 20 after the independent preparation, and preferably, in order to save the preparation process and the time for alignment calibration, a plurality of rows of the first micro scanning units 201 sequentially connected in the first direction a are integrally formed on the light incident surface of the scanning lens 20 according to different preset angles. The second micro-scanning unit 202 disposed on the light-emitting surface of the scanning lens 20 is disposed in the same manner, and is not described herein again.
Optionally, an antireflection film (not shown in fig. 4) is disposed on the light incident surface of the scanning lens 20 and/or the light emergent surface of the scanning lens 20.
In order to ensure the light intensity and the light emitting effect of the two-dimensional laser lattice at the scanning position of the laser beam emergent as much as possible and reduce the light loss of the laser beam during transmission in the laser lattice system, anti-reflection film layers can be respectively plated on the light incident surface and the light emergent surface of the scanning lens 20, and the anti-reflection film layers can enhance the light beam passing through the surface of the optical structure arranged on the anti-reflection film layers so as to reduce the light loss in the transmission process.
Of course, if the transmission effect only needs to be improved in the fast axis direction of the laser beam or only needs to be improved in the slow axis direction of the laser beam according to special requirements, the antireflection film layer may be only disposed on the light incident surface of the scanning lens 20, or only the light emitting surface of the scanning lens 20.
In the embodiment of the present invention, the setting parameters of the antireflection film layer, such as the setting thickness and the material composition, and the plating method of the antireflection film layer are not specifically limited, and those skilled in the art may specifically set and prepare the antireflection film layer based on the technical requirements, the actual conditions of the processing equipment, and the comprehensive consideration of cost accounting.
Optionally, as shown in fig. 4, the first micro scanning unit 201 is disposed axially symmetrically along the second direction B at the light incident surface of the scanning lens 20, and the second micro scanning unit 202 is disposed axially symmetrically along the first direction a at the light emergent surface of the scanning lens 20.
The first micro scanning units 201 are arranged on the light incident surface of the scanning lens 20 along the second direction B, in general, the formed laser dot matrix needs to be arranged regularly in the medical or detection use, and as shown in fig. 4, the light spots forming the laser dot matrix are usually arranged in the second direction B as the central axis of the light incident surface of the scanning lens 20, so that the multiple rows of the first micro scanning units 201 on both sides of the central axis are axially symmetrical, and thus, the formed laser dot matrix is also symmetrical in the first direction a in the arrangement shape and the distance from the center to both sides. Similarly, the second micro-scanning units 202 are disposed on the light-emitting surface of the scanning lens 20 and are axisymmetrically disposed along the first direction a, and the first direction a is taken as the central axis of the light-emitting surface of the scanning lens 20, so that the multiple rows of the second micro-scanning units 202 on both sides of the central axis are axisymmetric, and thus, the disposed shapes and the intervals of the formed laser lattices in the second direction B are also symmetric from the center to both sides.
Illustratively, the incident surface of each row of the first micro-scanning units 201 arranged along the first direction a forms a cylindrical unit on the incident surface of the scanning lens 20, so that when the scanning lens 20 reciprocates along the first direction a, the laser beam emitted from the laser source 10 irradiates any one of the first micro-scanning units 201 in each row of the first micro-scanning units 201 on the scanning lens 20, the light spots emitted at the scanning position have the same position in the first direction a. On the light emitting surface of the scanning lens 20, a cylindrical unit is formed on the light emitting surface of each row of the second micro-scanning units 202 arranged along the second direction B, and the forming manner and the scanning result are the same as those of the first micro-scanning unit 201, which is not described herein again.
In addition, each row of the first micro scanning units 201 or each row of the second micro scanning units 202 is a cylindrical unit, and compared with the plurality of first micro scanning units 201 or the plurality of second micro scanning units 202 formed on the surface of the scanning lens 20 in an array manner, the manufacturing process is relatively simplified, and the processing yield is higher.
Moreover, by setting the incident surface of the first micro scanning unit 201 as a cylindrical surface unit, the difficulty of the manufacturing process of the scanning lens 20 in the fast axis direction can be simplified on the basis of forming the laser dot matrix by scanning, and by setting the emergent surface of the second micro scanning unit 202 as a cylindrical surface unit, the difficulty of the manufacturing process of the scanning lens 20 in the slow axis direction can be simplified on the basis of forming the laser dot matrix by scanning.
In addition, fig. 11 is a fourth schematic structural diagram of the scanning lens 20 according to the embodiment of the present invention, as shown in fig. 11, for example, the light incident surface and the light emergent surface of the scanning lens 20, which are disposed in a pasting manner or integrally formed, may also be disposed as sawtooth lenses arranged along the first direction a and the second direction B, respectively.
Alternatively, as shown in fig. 4, the first micro-scanning unit 201 is divided into a plurality of sub-units along the second direction B, and/or the second micro-scanning unit 202 is divided into a plurality of sub-units along the first direction a, the sub-units are cylindrical units having curvatures in the first direction a and the second direction B, and preferably, the curvatures in the first direction a and the second direction B are not equal.
As shown in fig. 4, each of the first micro-scanning units 201 and each of the second micro-scanning units 202 is a sub-unit, each sub-unit is a cylindrical unit, and the curvature of the cylindrical unit in the first direction a is not equal to the curvature of the cylindrical unit in the second direction B, so that for each cylindrical unit, when the laser beam is transmitted by the cylindrical unit, the laser beam can be refracted in the fast axis direction and the slow axis direction according to the curvatures of the cylindrical unit in the first direction a and the second direction B, and a light spot is correspondingly formed at the scanning position. Moreover, the scanning lens 20 composed of the cylindrical unit with double curvature can eliminate the phase difference in the formation process of the two-dimensional laser lattice, so as to form accurate lattice distribution at the scanning position.
For example, fig. 7 is a third schematic structural diagram of a scanning lens in an embodiment of the present invention, as shown in fig. 7, the scanning lens 20 includes a first scanning lens 21 and a second scanning lens 22 sequentially disposed along the light emitting direction of the laser source 10, a first micro scanning unit 201 is disposed on the light emitting side of the first scanning lens 21, and a second micro scanning unit 202 is disposed on the light emitting side of the second scanning lens 22.
As shown in fig. 7, the first scanning lens 21 and the second scanning lens 22 are disposed in close contact with each other to reduce the thickness and volume of the scanning lens 20 composed of the first scanning lens 21 and the second scanning lens 22 as much as possible, thereby improving the compactness of the entire structure. Or, the scanning lens 20 is formed by integrally molding the first scanning lens 21 and the second scanning lens 22, so that the number of interfaces of the laser beam passing through the scanning lens 20 is reduced on the basis of ensuring a compact structure volume, the light loss of the laser beam passing through the scanning lens 20 can be reduced under the same condition, and the light emitting effect is improved.
For example, fig. 8 is a schematic diagram of another structure of a laser dot matrix system according to an embodiment of the present invention, as shown in fig. 8, a first scanning lens 21 is formed by sequentially connecting a plurality of cylindrical mirrors along a first direction a, and a second scanning lens 22 is formed by sequentially connecting a plurality of cylindrical mirrors along a second direction B. The cylindrical mirrors connected in sequence can be fixedly bonded and arranged at intervals, and can also be integrally formed.
As shown in fig. 8, the first scanning lens 21 or the second scanning lens 22 is composed in different directions by a cylindrical mirror. Optionally, the scanning lens 20 further includes a cylindrical mirror 23, and in the present embodiment, the first scanning lens 21 and the second scanning lens 22 constituting the scanning lens 20 are disposed at intervals, and the cylindrical mirror 23 is disposed between the first scanning lens 21 and the second scanning lens 22. Thus, the scanning movement of the scanning lens 20 may be controlled by controlling the first scanning lens 21 to move in one direction and the second scanning lens 22 to move in another perpendicular direction, or by controlling both the first scanning lens 21 and the second scanning lens 22 to move simultaneously in both directions.
Alternatively, fig. 9 is a schematic diagram of another structure of a laser dot matrix system according to an embodiment of the present invention, as shown in fig. 9, in this embodiment, the first scanning lens 21 and the second scanning lens 22 are composed of cylindrical mirrors along different directions, and the first scanning lens 21 and the second scanning lens 22 are fixed to each other by adhering, or the first scanning lens 21 and the second scanning lens 22 are manufactured by integral molding, and during the manufacturing process of integral molding, corresponding structures are directly generated on the first scanning lens 21 and the second scanning lens 22 through a lens generation process. The scanning lens 20 further includes a cylindrical lens 23, and the cylindrical lens 23 is disposed on the light incident side of the first scanning lens 21, so as to collimate and converge the laser beam entering the scanning lens 20 in the laser lattice system of the embodiment of the present invention, so as to optimize the quality of the light spot emitted to the scanning position. Of course, it is also possible to dispose the lenticular lens 23 in combining the first scanning lens 21 and the second scanning lens 22 with each other, or on the light exit side of the second scanning lens 22.
Optionally, the scanning optical device is a scanning lens 20, the light incident surface or the light exiting surface of the scanning lens 20 includes a plurality of micro transmission units, fig. 12 is a fifth schematic structural view of the scanning lens in the embodiment of the present invention, as shown in fig. 12, a plurality of micro transmission units are formed on the light incident surface of the scanning lens 20, each micro transmission unit is formed by splicing a first transmission unit and a second transmission unit, the first transmission unit is used for refracting an incident laser beam to a first direction a at a certain angle and then transmitting the incident laser beam, and the second transmission unit is used for refracting an incident laser beam to a second direction B at a certain angle and then transmitting the incident laser beam.
Wherein, the first transmission unit and the second transmission unit may be planes or cambered surfaces, as shown in fig. 12, and taking the first transmission unit and the second transmission unit as planes as an example, fig. 13 is one of the structural schematic diagrams of the scanning lens light incident surface in the embodiment of the present invention, as shown in fig. 13, the first transmission unit has a certain inclination angle at least in the first direction a, and when a laser beam is incident to the first transmission unit of the micro transmission unit, the incident laser beam is refracted and emitted at a certain angle according to the inclination angle of the first transmission unit in the first direction a, and on this basis, preferably, the first transmission unit may be further configured to have a certain inclination angle in the second direction B while the first direction a has a certain inclination angle, so that the laser beam incident to the first transmission unit can be refracted at a certain angle in both the first direction a and the second direction B, after the two refraction directions are overlapped, the light is refracted and emitted in the angle overlapping direction. Similarly, fig. 14 is a second schematic structural view illustrating that the light incident surface of the scanning lens in the embodiment of the invention includes a plurality of micro-transmission units, as shown in fig. 14, the second transmission unit has a certain inclination angle at least in the second direction B, and when a laser beam is incident on the second transmission unit of the micro-transmission unit, the incident laser beam is refracted and emitted at a certain angle according to the inclination angle of the second transmission unit in the second direction B, preferably, the second transmission unit may also be set to have a certain inclination angle in the second direction B and also have a certain inclination angle in the first direction a, and the principle of refraction of the laser beam is the same as that of the first transmission unit, which is not described herein again.
It should be noted that, even though the first transmission unit and the second transmission unit are both formed with an inclination angle in the first direction a and the second direction B, in general, the inclination angles of the first transmission unit and the second transmission unit are different, so that when the scanning lens 20 is driven to scan and sequentially pass through the first transmission unit and the second transmission unit spliced with each other in the micro-transmission unit, the first transmission unit and the second transmission unit can refract and emit laser beams at different angles and directions.
Fig. 15 is a schematic structural diagram of a scanning mirror according to an embodiment of the present invention, and as shown in fig. 15, optionally, the scanning optical device is a scanning mirror, a reflection surface of the scanning mirror includes a plurality of micro reflection units, each of the micro reflection units is formed by splicing a first reflection unit and a second reflection unit, the first reflection unit is configured to reflect a laser beam along a first direction a, and the second reflection unit is configured to reflect a laser beam along a second direction B.
As shown in fig. 15, when the laser dot matrix system according to the embodiment of the present invention is used in some special applications, there may be special requirements on the structure of the device or limitations on the direction of the light path, so that the laser beam needs to be reflected to change the propagation direction of the light. So that the laser beam incident to the first reflecting unit is reflected and emitted at a certain angle along the first direction A, and the laser beam incident to the second reflecting unit is reflected and emitted at a certain angle along the second direction B.
Optionally, fig. 16 is a second schematic structural view of the scanning optical device in the embodiment of the present invention, and as shown in fig. 16, the first reflecting unit and the second reflecting unit are respectively a first prism surface and a second prism surface, an included angle between the plurality of first prism surfaces and the main optical axis in the first direction a is different, and an included angle between the plurality of second prism surfaces and the main optical axis in the second direction B is different.
Preferably, as shown in fig. 16, the plurality of first prism faces may further include an angle with the main optical axis in the second direction B, so that the laser beams reflected by the first prism faces have more diversified reflection angles and arrangement forms of the light spots; similarly, the plurality of second prism surfaces can also have a certain included angle with the main optical axis in the first direction a, so that the laser beams reflected by the second prism surfaces have more diversified reflection angles and light spot arrangement forms.
Alternatively, the first and second reflecting units may also be first and second arc surfaces, respectively, the first and second reflecting units having curvatures in first and second directions a and B, respectively.
When the first reflection unit and the second reflection unit are respectively a first cambered surface and a second cambered surface, the first cambered surface is arranged to have the curvature of the first direction A and the curvature of the second direction B, so that the laser beam passing through the first cambered surface can reflect a certain angle in the first direction A and the second direction B respectively to form a superposition direction and a reflection back emergence of the superposition angle, and the second cambered surface is also arranged in the same way. It should be noted that, in general, the first arc surface and the second arc surface have different radians in the first direction a and the second direction B.
Optionally, as shown in fig. 8, a collimating lens group 30 is further disposed between the laser source 10 and the scanning lens 20, and the collimating lens group 30 includes a fast axis collimating lens 31 and a slow axis collimating lens 32 sequentially disposed along the light emitting direction, and is configured to perform fast axis collimation and slow axis collimation on the laser beam emitted from the laser source 10, respectively.
As shown in fig. 8, in the laser dot matrix system according to the embodiment of the present invention, a collimating lens group 30 is further disposed between the laser source 10 and the scanning lens 20, and is used for collimating and shaping the laser beam emitted from the laser source 10 through the collimating lens group 30. The fast axis collimating lens 31 can collimate the laser beam along the fast axis direction, and the slow axis collimating lens 32 can collimate the laser beam along the slow axis direction. The fast axis collimating lens 31 and the slow axis collimating lens 32 respectively collimate the laser beam in the fast axis direction and the slow axis direction, so that the collimation degree of the emergent light is better, and the accuracy of the light spot pattern formed at the scanning position is further optimized.
Alternatively, the scanning optical devices (the scanning lenses 20) are disposed in fixed frames on which stepping motors (not shown in fig. 8) are respectively disposed, and driving ends of the stepping motors are connected with the scanning lenses 20 to drive the scanning lenses 20 to move in the first direction a and/or the second direction B.
In the laser dot matrix system according to the embodiment of the present invention, the movement of the scanning lens 20 in the first direction a or the second direction B in the two-dimensional space can be controlled by providing the stepping motor capable of two-dimensionally operating on the fixing frame, and the scanning lens 20 can be made to reciprocate in both the first direction a and the second direction B at the same time, thereby increasing the diversity of the movement modes of the scanning lens 20. If the stepping motor works in a one-dimensional linear stepping mode, a first stepping motor and a second stepping motor are respectively arranged on two adjacent sides of the fixing frame, so that the stepping directions of the first stepping motor and the second stepping motor are perpendicular to each other, and therefore the stepping work of the first stepping motor and the stepping work of the second stepping motor can be controlled respectively or simultaneously.
In another aspect of the embodiments of the present invention, there is provided a method for forming a laser dot matrix, and fig. 10 is a flowchart of the method for forming a laser dot matrix according to the embodiments of the present invention, as shown in fig. 10, including:
s101, the scanning optical device moves along a first direction A and a second direction B which are perpendicular to each other.
And S102, scanning and emitting the laser beams by the moving scanning optical device and forming a two-dimensional laser dot matrix at the scanning position.
First, the laser light source 10 emits a laser beam in a direction toward the scanning optical device (scanning lens 20), and the scanning lens 20 is driven to reciprocate in a first direction a and a second direction B which are perpendicular to each other and form a plane in the process. Then, the laser beam is scanned and emitted through the moving scanning lens 20, and a two-dimensional laser dot matrix is formed at the scanning position.
The method of the present invention is not particularly limited to the implementation and the motion trajectory of the scanning lens 20 driven to reciprocate in the first direction a and the second direction B which are perpendicular to each other and form a plane, and for example, the scanning lens may make a circular motion in the plane formed by the first direction a and the second direction B, or make any irregular motion in the plane formed by the first direction a and the second direction B.
In another aspect of the embodiments of the present invention, a laser lattice therapy apparatus is provided, which includes the laser lattice system of any one of the above-mentioned embodiments.
When the laser dot matrix system is applied to the laser dot matrix therapeutic apparatus, the laser dot matrix system is arranged in the shell of the laser dot matrix therapeutic apparatus, and the scanning position in the laser dot matrix system is arranged in the light emitting range of the laser dot matrix therapeutic apparatus, so that in the treatment process of surgery or beauty treatment of the laser dot matrix therapeutic apparatus, an operator holds the laser dot matrix therapeutic apparatus by hand, the scanning position in the light emitting range of the laser dot matrix therapeutic apparatus is located at an affected part as required, and the power supply of the laser dot matrix therapeutic apparatus is started to enable the laser source 10 in the laser dot matrix system to start to work, so that a two-dimensional laser dot matrix is formed at the scanning position.
Of course, as can be seen from all the descriptions above in the description, the laser dot matrix system in the embodiment of the present invention may also be applied to the fields of medical operations, or industrial detection, etc., and no description is given in the embodiment of the present invention, so long as when the laser dot matrix system in the embodiment of the present invention is applied to a specific device in a corresponding field, the scanning position of the laser dot matrix system is set to the operating position, and the laser source 10 of the laser dot matrix system and the reciprocating motion of the scanning lens 20 are started, so that a continuous two-dimensional laser dot matrix can be formed at the operating position.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (7)
1. A laser dot matrix system, comprising: the laser scanning device comprises a laser source and a scanning optical device arranged in the light emitting direction of the laser source, wherein the scanning optical device is driven to respectively reciprocate along a first direction and a second direction perpendicular to the light emitting direction so that laser beams pass through the scanning optical device to form a two-dimensional laser dot matrix at a scanning position, and the first direction is perpendicular to the second direction; the scanning optical device is a scanning lens, the light incident surface of the scanning lens comprises a plurality of rows of first micro scanning units which are continuously arranged in parallel along a first direction, the light emergent surface of the scanning lens comprises a plurality of rows of second micro scanning units which are continuously arranged in parallel along a second direction, laser beams of two adjacent rows of the first micro scanning units are emitted to different angles, and laser beams of two adjacent rows of the second micro scanning units are emitted to different angles; the first micro scanning unit and/or the second micro scanning unit are cylindrical mirrors or sawtooth prisms; the first micro scanning unit is divided into a plurality of sub-units along a second direction, and/or the second micro scanning unit is divided into a plurality of sub-units along a first direction, the sub-units are cylindrical units, and the sub-units have curvatures in the first direction and the second direction.
2. The laser dot matrix system of claim 1, wherein the scanning lens comprises a first scanning lens and a second scanning lens sequentially disposed along the light emitting direction of the laser source, the first micro-scanning unit is disposed on the light incident side or the light emitting side of the first scanning lens, the second micro-scanning unit is disposed on the light emitting side or the light incident side of the second scanning lens, and the first scanning lens and the second scanning lens are attached to each other or spaced apart from each other.
3. The laser lattice system of claim 1, wherein the laser beams passing through a column of said first micro-scanning units exit at the same angle in a first direction and/or the laser beams passing through a column of said second micro-scanning units exit at the same angle in a second direction.
4. The laser lattice system of claim 3, wherein the first micro-scanning unit is disposed on the scanning lens in an axisymmetric manner in the second direction, and the second micro-scanning unit is disposed on the scanning lens in an axisymmetric manner in the first direction.
5. The laser lattice system of claim 1, further comprising a set of collimators between the laser source and the scanning optics, the set of collimators including a fast axis collimator and a slow axis collimator sequentially arranged along the light exit direction for respectively performing fast axis collimation and slow axis collimation on the laser beam exiting from the laser source.
6. The laser dot matrix system of claim 1, wherein the scanning optics are disposed within a fixed frame, the fixed frame having a stepper motor disposed thereon, the drive end of the stepper motor being coupled to the scanning optics to drive the scanning optics to move in the first direction and/or the second direction.
7. A laser dot matrix treatment apparatus, comprising the laser dot matrix system according to any one of claims 1 to 6.
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| CN202010765086.2A CN111939485B (en) | 2020-07-31 | 2020-07-31 | Laser dot matrix system and laser dot matrix therapeutic instrument |
| CN202210422251.3A CN114904152A (en) | 2020-07-31 | 2020-07-31 | Laser dot matrix system and laser dot matrix therapeutic instrument |
| CN202210422065.XA CN114904151A (en) | 2020-07-31 | 2020-07-31 | Laser dot matrix system and laser dot matrix therapeutic instrument |
| PCT/CN2020/108514 WO2022021477A1 (en) | 2020-07-31 | 2020-08-11 | Laser dot matrix system and method, and laser dot matrix therapy instrument |
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| CN112505983B (en) * | 2020-12-03 | 2022-04-12 | 嘉兴驭光光电科技有限公司 | Microprism optical element for realizing laser dot matrix and projection module |
| CN113985603B (en) * | 2021-12-22 | 2022-04-22 | 苏州旭创科技有限公司 | Light beam scanning system |
| CN115236853B (en) * | 2022-09-22 | 2023-08-29 | 杭州灵西机器人智能科技有限公司 | Linear light source optical system and linear laser scanning method |
| CN115268095B (en) * | 2022-09-22 | 2023-03-14 | 杭州灵西机器人智能科技有限公司 | Light source optical system and line laser scanning method |
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| CN114904151A (en) | 2022-08-16 |
| CN111939485A (en) | 2020-11-17 |
| WO2022021477A1 (en) | 2022-02-03 |
| CN114904152A (en) | 2022-08-16 |
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