CN118091932A - Laser scanning device - Google Patents
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- CN118091932A CN118091932A CN202410518867.XA CN202410518867A CN118091932A CN 118091932 A CN118091932 A CN 118091932A CN 202410518867 A CN202410518867 A CN 202410518867A CN 118091932 A CN118091932 A CN 118091932A
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- 230000003287 optical effect Effects 0.000 claims description 18
- 238000003384 imaging method Methods 0.000 description 41
- 230000007704 transition Effects 0.000 description 19
- 210000004027 cell Anatomy 0.000 description 13
- 210000003491 skin Anatomy 0.000 description 11
- 230000000694 effects Effects 0.000 description 8
- 238000010586 diagram Methods 0.000 description 6
- 210000003780 hair follicle Anatomy 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 230000003796 beauty Effects 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 102000008186 Collagen Human genes 0.000 description 3
- 108010035532 Collagen Proteins 0.000 description 3
- 229920001436 collagen Polymers 0.000 description 3
- 230000002087 whitening effect Effects 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 2
- 210000004209 hair Anatomy 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 210000002752 melanocyte Anatomy 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 210000001519 tissue Anatomy 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000001902 propagating effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B26/00—Optical devices or arrangements for the control of light using movable or deformable optical elements
- G02B26/08—Optical devices or arrangements for the control of light using movable or deformable optical elements for controlling the direction of light
- G02B26/10—Scanning systems
- G02B26/101—Scanning systems with both horizontal and vertical deflecting means, e.g. raster or XY scanners
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
- A61B18/18—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by applying electromagnetic radiation, e.g. microwaves
- A61B18/20—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by applying electromagnetic radiation, e.g. microwaves using laser
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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
- A61N5/067—Radiation therapy using light using laser light
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
- A61B2018/00315—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body for treatment of particular body parts
- A61B2018/00452—Skin
- A61B2018/00476—Hair follicles
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
- A61B18/18—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by applying electromagnetic radiation, e.g. microwaves
- A61B18/20—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by applying electromagnetic radiation, e.g. microwaves using laser
- A61B2018/2035—Beam shaping or redirecting; Optical components therefor
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
- A61B18/18—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by applying electromagnetic radiation, e.g. microwaves
- A61B18/20—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by applying electromagnetic radiation, e.g. microwaves using laser
- A61B2018/2035—Beam shaping or redirecting; Optical components therefor
- A61B2018/20553—Beam shaping or redirecting; Optical components therefor with special lens or reflector arrangement
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- Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Life Sciences & Earth Sciences (AREA)
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- Optics & Photonics (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Animal Behavior & Ethology (AREA)
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- Radiology & Medical Imaging (AREA)
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- Heart & Thoracic Surgery (AREA)
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Abstract
The application discloses a laser scanning device, which comprises a light-emitting element and a reversing element, wherein the light-emitting element is used for emitting an initial light beam; the reversing element is positioned on the light path of the initial light beam, and at least one of the reversing element and the light-emitting element can rotate around the rotation axis so that the initial light beam is emitted to different positions of the reversing element around the rotation axis; the reversing element comprises a plurality of reversing units, the reversing units are arranged around a rotation axis, each reversing unit comprises a first reversing surface and a second reversing surface which are arranged in a back-to-back mode, the first reversing surface is perpendicular to the rotation axis, the second reversing surface is obliquely arranged along the circumferential direction around the rotation axis, the first reversing surfaces and the second reversing surfaces of two adjacent reversing units are different in interval size in the axial direction where the rotation axis is located, and the initial light beams are obliquely arranged with the first reversing surfaces. The initial light beam can form a plurality of linear light spots which are mutually spaced through a plurality of reversing units, the structure is simple, and the cost is reduced.
Description
Technical Field
The application relates to the technical field of laser, in particular to a laser scanning device.
Background
Along with the gradual application of the laser technology to the field of beauty skin treatment, laser equipment such as laser beauty instruments, laser dehairing instruments and the like on the market are also popular. Laser dehairing utilizes the absorption of melanocytes in hair follicles to light in a specific wave band to generate heat for the hair follicles, so that the hair follicles are selectively destroyed, and surrounding tissues are prevented from being damaged, so that the effect of removing hair is achieved. The laser tendering skin can promote the generation of collagen by utilizing the dot matrix light spots, so that the effects of improving skin quality, shrinking pores and whitening and tendering skin are realized.
At present, the existing laser equipment has complex structure, for example, a plurality of light emitting units, or a large-volume vibrating mirror, a linear module, a control system and the like are often needed, and laser spots such as point spots, linear spots and the like are difficult to simply and efficiently form, so that the cost is high, the volume is large, and the treatment effect is poor.
Disclosure of Invention
The application provides a laser scanning device, which aims to solve the technical problems in the prior art.
In order to solve the above technical problems, one technical solution adopted by the present application is to provide a laser scanning device, the laser scanning device includes: the light-emitting element is used for emitting an initial light beam; the reversing element is positioned on the light path of the initial light beam, and at least one of the reversing element and the light-emitting element can rotate around the rotation axis so that the initial light beam is emitted to different positions of the reversing element around the rotation axis; the reversing element comprises a plurality of reversing units, the reversing units are arranged around a rotation axis, each reversing unit comprises a first reversing surface and a second reversing surface which are arranged in a back-to-back mode, the first reversing surface is perpendicular to the rotation axis, the second reversing surface is obliquely arranged along the circumferential direction around the rotation axis, the first reversing surfaces and the second reversing surfaces of two adjacent reversing units are different in interval size in the axial direction where the rotation axis is located, and the initial light beams are obliquely arranged with the first reversing surfaces.
In some embodiments, the plurality of commutation cells includes at least first and second adjacently disposed commutation cells, a first spacing dimension of the first and second commutation faces of the first commutation cell in the axial direction being less than a second spacing dimension of the first and second commutation faces of the second commutation cell in the axial direction; the plurality of commutation cells has a spacing dimension between the first spacing dimension and the second spacing dimension.
In some embodiments, at least part of the spacing dimension of at least part of the commutation units varies in the circumferential direction of the axis of rotation.
In some embodiments, at least a portion of the plurality of commutation cells have the same spacing dimension between adjacent ones of the plurality of commutation cells.
In some embodiments, the spacing dimension of the plurality of commutation cells between the first commutation cell and the second commutation cell increases in sequence in the circumferential direction.
In some embodiments, the plurality of reversing units sequentially receive the initial light beam along the circumferential direction and reversing the initial light beam to exit.
In some embodiments, the laser scanning device further comprises a drive assembly coupled to the reversing element, the drive assembly configured to drive the reversing element to rotate about the axial direction to pass the initial beam through the plurality of reversing elements.
In some embodiments, the laser scanning device further comprises a fly-eye lens, located downstream of the reversing element on the optical path of the initial beam, for receiving the initial beam and performing the multi-point exit.
In some embodiments, the laser scanning device includes a first reversing portion and a second reversing portion arranged along an axial direction, the first reversing portion and the second reversing portion cooperate to form a plurality of reversing units, first reversing surfaces of the reversing units are sequentially arranged in the first reversing portion, second reversing surfaces of the reversing units are sequentially arranged in the second reversing portion, and one first reversing surface corresponds to one second reversing surface to form the reversing unit.
Compared with the prior art, the beneficial effects of the embodiment of the application are as follows: provided is a laser scanning device including: the light-emitting element is used for emitting an initial light beam; the reversing element is positioned on the light path of the initial light beam, and at least one of the reversing element and the light-emitting element can rotate around the rotation axis so that the initial light beam is emitted to different positions of the reversing element around the rotation axis; the reversing element comprises a plurality of reversing units, the reversing units are arranged around a rotation axis, each reversing unit comprises a first reversing surface and a second reversing surface which are arranged in a back-to-back mode, the first reversing surface is perpendicular to the rotation axis, the second reversing surface is obliquely arranged along the circumferential direction around the rotation axis, the first reversing surfaces and the second reversing surfaces of two adjacent reversing units are different in interval size in the axial direction where the rotation axis is located, and the initial light beams are obliquely arranged with the first reversing surfaces. According to the embodiment, the light emitting element emits the initial light beam, the initial light beam and the first reversing surface are obliquely arranged, the initial light beam enters the reversing units from one of the first reversing surface and the second reversing surface and exits the reversing units from the other reversing surface, and as the interval sizes of the first reversing surface and the second reversing surface of the two adjacent reversing units in the axial direction of the rotation axis are different, the optical paths of the initial light beam in the reversing units with different interval sizes are different, so that the spot imaging positions of the initial light beam emitted from the different reversing units on the imaging plane are different, and as the size change between the different interval sizes is discontinuous, the spot imaging positions of the initial light beam on the imaging plane are also mutually spaced, and the second reversing surface is obliquely arranged along the circumferential direction around the rotation axis, so that the initial light beam can form linear spots on the imaging plane. Therefore, the initial light beam passes through a plurality of reversing units of the reversing element, a plurality of linear light spots which are mutually spaced can be formed on the imaging plane, the structure is simple, and the cost is reduced.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for the description of the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present application, and other drawings may be obtained according to these drawings without inventive effort to those of ordinary skill in the art.
FIG. 1 is a schematic diagram of a laser scanning apparatus according to an embodiment of the present application;
FIG. 2 is a schematic diagram of a reversing element of a laser scanning device according to an embodiment of the present application;
FIG. 3 is a schematic view of an embodiment of a first commutation segment of the commutation member shown in FIG. 2;
FIG. 4 is a schematic view of an embodiment of a second commutation segment of the commutation member shown in FIG. 2;
Fig. 5 is a schematic structural diagram of a fly-eye lens of a laser scanning apparatus according to an embodiment of the application.
The reference numerals are: a laser scanning device 1; a light emitting element 10; an initial light beam 11; a reversing element 20; a reversing unit 21; a first commutation surface 211; a second commutation surface 212; a first reversing unit 213; a second reversing unit 214; a first reversing section 22; a first transition surface 221; a second reversing section 23; a second transition surface 231; a drive assembly 30; a fly-eye lens 40; scanning spot 50; the space dimension D; a first granularity D1; a second granularity D2; a rotation axis y; an axial direction x1; the circumferential direction x2.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. It is to be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the application. It should be further noted that, for convenience of description, only some, but not all of the structures related to the present application are shown in the drawings. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
The terms "first," "second," "third," and the like in this disclosure are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first", "a second", and "a third" may explicitly or implicitly include at least one such feature. In the description of the present application, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise. All directional indications (such as up, down, left, right, front, back … …) in the embodiments of the present application are merely used to explain the relative positional relationship, movement, etc. between the components in a particular gesture (as shown in the drawings), and if the particular gesture changes, the directional indication changes accordingly. Furthermore, the terms "comprise" and "have," as well as any variations thereof, are intended to cover a non-exclusive inclusion. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those listed steps or elements but may include other steps or elements not listed or inherent to such process, method, article, or apparatus.
Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the application. The appearances of such phrases in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Those of skill in the art will explicitly and implicitly appreciate that the embodiments described herein may be combined with other embodiments.
Along with the gradual application of the laser technology to the field of beauty skin treatment, laser equipment such as laser beauty instruments, laser dehairing instruments and the like on the market are also popular. Laser dehairing utilizes the absorption of melanocytes in hair follicles to light in a specific wave band to generate heat for the hair follicles, so that the hair follicles are selectively destroyed, and surrounding tissues are prevented from being damaged, so that the effect of removing hair is achieved. The laser tendering skin can promote the generation of collagen by utilizing the dot matrix light spots, so that the effects of improving skin quality, shrinking pores and whitening and tendering skin are realized.
At present, the existing laser equipment has complex structure, for example, a plurality of light emitting units, or a large-volume vibrating mirror, a linear module, a control system and the like are often needed, and laser spots such as point spots, linear spots and the like are difficult to simply and efficiently form, so that the cost is high, the volume is large, and the treatment effect is poor.
Referring to fig. 1 to 4, fig. 1 is a schematic structural diagram of an embodiment of a laser scanning apparatus provided by the present application; FIG. 2 is a schematic diagram of a reversing element of a laser scanning device according to an embodiment of the present application; FIG. 3 is a schematic view of an embodiment of a first commutation segment of the commutation member shown in FIG. 2; fig. 4 is a schematic structural view of an embodiment of a second reversing portion of the reversing element according to fig. 2.
In order to solve the above technical problem, one technical solution adopted by the present application is to provide a laser scanning device 1, where the laser scanning device 1 includes: a light emitting element 10 and a reversing element 20, the light emitting element 10 being adapted to emit an initial light beam 11; the reversing element 20 is positioned on the optical path of the initial light beam 11, and at least one of the reversing element 20 and the light-emitting element 10 can rotate around the rotation axis y so that the initial light beam 11 is emitted to different positions of the reversing element 20 around the rotation axis y; the reversing element 20 includes a plurality of reversing units 21, the reversing units 21 are arranged around a rotation axis y, each reversing unit 21 includes a first reversing surface 211 and a second reversing surface 212 which are arranged opposite to each other, the first reversing surface 211 is perpendicular to the rotation axis y, the second reversing surface 212 is obliquely arranged along a circumferential direction x2 around the rotation axis y, a space dimension D of the first reversing surface 211 and the second reversing surface 212 of two adjacent reversing units 21 in an axial direction x1 where the rotation axis y is located is different, and the initial light beam 11 is obliquely arranged with the first reversing surface 211.
The light emitting element 10 may emit an initial light beam 11, and the initial light beam 11 may linearly propagate along its optical path, and the light emitting element 10 may be a point light source, for example, the light emitting element 10 may be a laser or the like, for example. The reversing element 20 may be used to change the propagation direction of the initial light beam 11, and it is understood that the light path of the initial light beam 11 after passing through the reversing element 20 may be at an angle or offset from the light path before passing through the reversing element 20, the light path of the initial light beam 11 before passing through the reversing element 20 is denoted as a first light path, the light path of the initial light beam 11 after passing through the reversing element 20 is denoted as a second light path, and the first light path and the second light path may be parallel and spaced from each other, i.e. the second light path is translated in space compared with the first light path; or the first optical path may be at an angle to the second optical path.
At least one of the reversing element 20 and the light emitting element 10 is rotatable about a rotation axis y, and the light emitting element 10 may be stationary with respect to the rotation axis y, the reversing element 20 being rotatable about an axial direction x1 of the rotation axis y; or the reversing element 20 can be stationary with respect to the rotation axis y, and the light emitting element 10 can be rotated in the axial direction x1 around the rotation axis y; or both the reversing element 20 and the light emitting element 10 may be rotatable in the axial direction about the rotation axis y. It will be appreciated that the initial light beam 11 may also be rotated relative to the reversing element 20 about the axial direction x1 of the axis of rotation y such that the initial light beam 11 exits to different positions of the reversing element 20 about the axis of rotation y.
The reversing element 20 comprises a plurality of reversing units 21, the plurality of reversing units 21 being arranged around the rotation axis y, it being understood that the initial light beam 11 is emitted to different positions of the reversing element 20 around the rotation axis y, so that the initial light beam 11 can be emitted onto a plurality of different reversing units 21. Each of the reversing units 21 includes a first reversing surface 211 and a second reversing surface 212 disposed opposite to each other, the first reversing surface 211 being perpendicular to the rotation axis y, the second reversing surface 212 being disposed obliquely along a circumferential direction x2 around the rotation axis y. The reversing unit 21 may be two, three, four or more in number. The initial light beam 11 may enter the reversing unit 21 from one of the first reversing surface 211 and the second reversing surface 212 and exit the reversing unit 21 from the other, and the initial light beam 11 may enter the reversing unit 21 from the first reversing surface 211 and exit the reversing unit 21 from the second reversing surface 212, or may enter the reversing unit 21 from the second reversing surface 212 and exit the reversing unit 21 from the first reversing surface 211, for example. In case of neglecting errors in the actual manufacturing process, the second commutation surface 212 may be arranged obliquely in the circumferential direction x2, and the second commutation surface 212 may, for example, extend both in the axial direction x1 and in the circumferential direction x2 so as to be inclined compared to the rotational axis y, all over the same first commutation surface 211 may be located substantially on the same plane perpendicular to the rotational axis y. The second reversing surface 212 may form an angle with the first reversing surface 211. In some applications, the second reversing surface 212 may be a bevel or a curved surface relative to the first reversing surface 211. After passing the second diverting surface 212, the optical path of the initial beam 11 is deflected compared to the optical path before passing the second diverting surface 212, and the initial beam 11 may deflect to different degrees at different positions passing the second diverting surface 212, so as to form a linear light spot on an imaging plane, where the imaging plane may refer to a plane on the optical path of the initial beam 11, and downstream of the diverting unit 21, for imaging the initial beam 11, and it is understood that the initial beam 11 projects on the imaging plane to form an observable light spot correspondingly.
The first commutation surface 211 and the second commutation surface 212 of adjacent two of the commutation units 21 are arranged diagonally to the first commutation surface 211 with a different spacing dimension D in the axial direction x 1of the rotation axis y. The difference in the interval dimension D between the first commutation surface 211 and the second commutation surface 212 of the adjacent two commutation units 21 may mean that the interval dimension D between the corresponding positions of the first commutation surface 211 and the second commutation surface 212 of the two commutation units 21 is different, and illustratively, the interval dimension D between the starting positions of the two first commutation surfaces 211 of the two commutation units 21 in the circumferential direction x2 and the two second commutation surfaces 212 corresponding thereto is different, respectively; or the end positions of the two first commutation surfaces 211 of the two commutation units 21 in the circumferential direction x2 are respectively different in the spacing dimension D between the two second commutation surfaces 212 corresponding thereto; similarly, the first commutation surface 211 and the second commutation surface 212 at corresponding positions of the two commutation units 21 are spaced by different dimensions D. Of course, it is understood that in some embodiments, the spacing dimension D of the first commutation surface 211 and the second commutation surface 212 at different locations on the two commutation units 21 may be the same, and illustratively, the spacing dimension D between the starting point location of the first commutation surface 211 of one commutation unit 21 to its corresponding second commutation surface 212 may be the same as the spacing dimension D between the ending point location of the first commutation surface 211 of the other commutation unit 21 to its corresponding second commutation surface 212. The initial light beam 11 propagates between the first reversing surface 211 and the second reversing surface 212 of the reversing unit 21, and since the initial light beam 11 is obliquely arranged with the first reversing surface 211, the initial light beam 11 is refracted at the first reversing surface 211, and in the reversing units 21 with different interval sizes D between the first reversing surface 211 and the second reversing surface 212, the optical paths of the propagation of the initial light beam 11 are different, so that different second light paths are formed when the initial light beam 11 passes through adjacent different reversing units 21, and the interval distances between the different second light paths and the first light paths are different, so that the initial light beam 11 forms mutually-spaced light spots on the imaging plane.
Through the above embodiment, the light emitting element 10 emits the initial light beam 11, the initial light beam 11 is disposed obliquely to the first reversing surface 211, the initial light beam 11 enters the reversing unit 21 from one of the first reversing surface 211 or the second reversing surface 212, and exits the reversing unit 21 from the other, and the first reversing surface 211 and the second reversing surface 212 of the adjacent two reversing units 21 are disposed obliquely along the circumferential direction x2 around the rotation axis y, so that the optical paths of the initial light beam 11 in the reversing units 21 with different spacing dimensions D are different, so that the spot imaging positions of the initial light beam 11 emitted from the different reversing units 21 in the imaging plane are different, and the spot imaging positions of the initial light beam 11 in the imaging plane are also mutually spaced due to the discontinuous dimensional change between the different spacing dimensions D, and the second reversing surface 212 is disposed obliquely along the circumferential direction x2 around the rotation axis y, so that the initial light beam 11 can form a linear spot on the imaging plane. Therefore, the initial light beam 11 passes through the reversing units 21 of the reversing element 20, a plurality of linear light spots which are mutually spaced can be formed on the imaging plane, the structure is simple, and the cost is reduced.
In some embodiments, at least part of the spacing dimension D of at least part of the commutation units 21 varies in the circumferential direction x2 of the axis of rotation y. The dimension D of the separation of at least part of the first commutation surface 211 to the second commutation surface 212 of the same commutation unit 21 can vary in the circumferential direction x2, for example, the interval dimension D between the first commutation surface 211 and the second commutation surface 212 of the same commutation unit 21 can vary between the start of the first commutation surface 211 and the end of the first commutation surface 211 in the circumferential direction x2, and the variation can be a continuous variation, e.g. a continuous increase or a continuous decrease, etc. Thereby, the optical path length of the initial light beam 11 propagating in the same reversing unit 21 can be continuously changed, so that a continuous linear light spot can be formed on the imaging plane.
In some embodiments, the difference in the spacing dimension D between two adjacent commutation cells 21 in at least a portion of the plurality of commutation cells 21 is the same. The same difference in the interval dimension D between the adjacent two reversing units 21 may mean that the difference in the interval dimension D between the first reversing surface 211 and the second reversing surface 212 at the corresponding positions of the adjacent two reversing units 21 is the same, and taking three reversing units 21 arranged in sequence as an example, the difference in the interval dimension D between the first reversing surface 211 and the second reversing surface 212 at the corresponding positions of the first reversing unit 21 and the second reversing unit 21 in the three reversing units 21 is the same as the difference in the interval dimension D between the first reversing surface 211 and the second reversing surface 212 at the corresponding positions of the second reversing unit 21 and the third reversing unit 21. Thus, when the initial light beam 11 sequentially exits onto the plurality of adjacent reversing units 21, the spacing distances between the plurality of linear light spots correspondingly formed on the imaging plane are the same.
In some embodiments, the plurality of commutation units 21 includes at least a first commutation unit 213 and a second commutation unit 214 disposed adjacently, the first spacing dimension D1 of the first commutation surface 211 and the second commutation surface 212 of the first commutation unit 213 in the axial direction x1 being smaller than the second spacing dimension D2 of the first commutation surface 211 and the second commutation surface 212 of the second commutation unit 214 in the axial direction x 1; the plurality of commutation cells 21 have a spacing dimension D that is intermediate between the first spacing dimension D1 and the second spacing dimension D2. The first interval dimension D1 of the first commutation unit 213 may be the smallest among the interval dimensions D of the plurality of commutation units 21, the second interval dimension D2 of the second commutation unit 214 may be the largest among the interval dimensions D of the plurality of commutation units 21, the first and second commutation units 213 and 214 are adjacently disposed, and the interval dimensions D of the other commutation units 21 between the first and second commutation units 213 and 214 may be equal to or greater than the first interval dimension D1 and equal to or less than the second interval dimension D2 in the circumferential direction x2, and the plurality of commutation units 21 may be sequentially arranged in the circumferential direction x2, starting with the first commutation unit 213 and ending with the second commutation unit 214, and the plurality of commutation units 21 may form a ring shape connected end to end, wherein the interval dimension D of the plurality of commutation units 21 is between the first interval dimension D1 and the second interval dimension D2. Thereby, the imaging range of the plurality of linear spots formed on the imaging plane by the initial light beam 11 can be limited by the first and second space dimensions D1 and D2 of the first and second commutation units 213 and 214.
In some embodiments, the interval dimension D of the plurality of commutation units 21 between the first commutation unit 213 and the second commutation unit 214 sequentially increases in the circumferential direction x 2. Illustratively, in the circumferential direction x2, four commutation units 21 are sequentially arranged between the first commutation unit 213 and the second commutation unit 214, the first interval dimension D1 of the first commutation unit 213 may be one unit length, the second interval dimension D2 of the second commutation unit 214 may be six unit lengths, and the interval dimension D of the four commutation units 21 between the first commutation unit 213 and the second commutation unit 214 is sequentially two unit lengths, three unit lengths, four unit lengths, and five unit lengths. Thus, the interval dimension D of the plurality of reversing units 21 sequentially increases, so that the plurality of linear light spots formed by the initial light beam 11 on the imaging plane are regularly arranged along a certain direction, where the certain direction may refer to the offset direction of the light path of the initial light beam 11 after passing through the reversing element 20, and for example, the reversing single phase with a larger interval dimension D has a larger offset effect on the light path of the initial light beam 11 than the reversing units 21 with a smaller interval dimension D, so that when the initial light beam 11 exits to the plurality of reversing units 21 with sequentially increasing interval dimension D along the circumferential direction x2, a plurality of linear light spots arranged at intervals are formed on the imaging plane, and the plurality of linear light spots are arranged along the offset direction of the initial light beam 11.
Further, the plurality of reversing units 21 sequentially receive the initial light beam 11 along the circumferential direction x2 and reversing and emitting the initial light beam 11. Illustratively, the reversing element 20 has six reversing units 21, the first reversing surfaces 211 of the six reversing units 21 may be disposed on the same side, the six reversing units 21 may be arranged in the circumferential direction x2 as viewed from the side near the first reversing surface 211, four reversing units 21 are sequentially arranged between the first reversing unit 213 and the second reversing unit 214 as viewed in the counterclockwise direction, and the interval dimension D of the six reversing units 21 sequentially increases in the counterclockwise direction, the difference in interval dimension D between adjacent two reversing units 21 is the same, the six first reversing surfaces 211 of the six reversing units 21 are the same, the six second reversing surfaces 212 are also identical in shape, and the six reversing units 21 may sequentially receive the initial light beam 11 along the circumferential direction x2, where the light emitting element 10 and the reversing element 20 may rotate at a relatively uniform speed about the rotation axis y, and each reversing unit 21 may receive the initial light beam 11 at the same time, for example, it may be understood that the initial light beam 11 may first exit to the first reversing unit 213, then sequentially exit to the four reversing units 21 between the first reversing unit 213 and the second reversing unit 214 in the counterclockwise direction, and then exit to the second reversing unit 214, which is a complete revolution of the initial light beam 11 exiting to the reversing element 20, in the above process, when the initial beam 11 is emitted to the first reversing unit 213, a first linear light spot is formed on the imaging plane, when the initial beam 11 is emitted to the reversing unit 21 adjacent to the first reversing unit 213, a second linear light spot is formed on the imaging plane, and in the same way, when the initial beam 11 is emitted to the reversing element 20 for a complete circle, the first linear light spot, the second linear light spot, the third linear light spot, the fourth linear light spot, the fifth linear light spot, and the sixth linear light spot can be formed on the imaging plane respectively, wherein the six linear light spots are sequentially arranged at intervals along a certain direction, and the lengths of the six linear light spots can be substantially the same, the spacing between two adjacent linear light spots is the same. It will be appreciated that six linear light spots appear sequentially on the imaging plane, illustratively, when the initial light beam 11 is projected onto the first reversing element 213, a first linear light spot appears on the imaging plane, when the initial light beam 11 leaves the first reversing element 213 and is projected onto the reversing element 21 adjacent to the first reversing element 213, a second linear light spot appears on the imaging plane, while the first linear light spot disappears, and similarly, when the third linear light spot appears, the second linear light spot disappears; when the fourth linear light spot appears, the third linear light spot disappears; when the fifth linear light spot appears, the fourth linear light spot disappears; when the sixth linear light spot appears, the fifth linear light spot disappears. Further, when the initial beam 11 leaves from the second reversing unit 214 and is projected onto the first reversing unit 213, the first linear light spot may appear again on the imaging plane, and the sixth linear light spot disappears. Thus, the plurality of reversing units 21 sequentially receive the initial light beam 11 along the circumferential direction x2 and perform reversing and emitting on the initial light beam 11, so that the scanning light spot 50 is formed on the imaging plane, the scanning light spot 50 sequentially and circularly appears, and the time that the initial light beam 11 is emitted to the reversing element 20 in the circumferential direction x2 for one circle can be taken as a circulation period.
In some embodiments, the laser scanning device 1 further comprises a driving assembly 30, wherein the driving assembly 30 is connected to the reversing element 20, and the driving assembly 30 is configured to drive the reversing element 20 to rotate about the axial direction x1, so that the initial light beam 11 passes through the plurality of reversing units 21. The drive assembly 30 may include, but is not limited to, a drive motor, or the like, wherein the drive motor may be a DC motor. In some application scenarios, the plurality of reversing units 21 of the reversing element 20 are sequentially arranged along the circumferential direction x2, the reversing element 20 may be annular as a whole, and the reversing element 20 may be sleeved on the driving assembly 30, so as to rotate around the axial direction x1 under the driving of the driving assembly 30.
In some embodiments, the laser scanning device 1 includes a first reversing portion 22 and a second reversing portion 23 arranged along the axial direction x1, the first reversing portion 22 and the second reversing portion 23 cooperate to form a plurality of reversing units 21, first reversing surfaces 211 of the plurality of reversing units 21 are sequentially arranged at the first reversing portion 22, second reversing surfaces 212 of the plurality of reversing units 21 are sequentially arranged at the second reversing portion 23, and one first reversing surface 211 is disposed corresponding to one second reversing surface 212 to form the reversing unit 21. The first reversing portion 22 and the second reversing portion 23 may be stacked in the circumferential direction x2, and the number of the first reversing surfaces 211 on the first reversing portion 22 may correspond to the number of the second reversing surfaces 212 on the second reversing portion 23, and for example, the first reversing portion 22 may be arranged with six first reversing surfaces 211, and the second reversing surface 212 may be arranged with six second reversing surfaces 212. The side of the first diverting section 22 facing away from the first diverting surface 211 and the side of the second diverting section 23 facing away from the second diverting surface 212 can be connected to each other such that one first diverting surface 211 and one second diverting surface 212 are arranged in correspondence such that the first diverting surface 211 and the second diverting surface 212 are spaced apart in the axial direction x1, so that the diverting unit 21 is formed. In some applications, the plurality of first commutation surfaces 211 of the first commutation 22 can lie substantially in the same plane. Thereby, the first reversing portion 22 and the second reversing portion 23 of the reversing element 20 can be flexibly replaced, so that the interval dimension D of each reversing unit 21 can be adjusted according to actual requirements, the second reversing surfaces 212 with different slopes and different circumferential dimensions can be replaced, and further, the shape, the dimension, the interval distance and the like of the linear light spots on the imaging plane can be adjusted, for example, the interval dimension D of the reversing units 21 can be adjusted by replacing the first reversing portion 22 or the second reversing portion 23 with different thicknesses, and thus, the interval distance among a plurality of linear light spots can be adjusted; or the extension length of the linear light spot can be adjusted by replacing the second reversing surface 212 with the corresponding first reversing surface 211, wherein the circumferential dimension can refer to the extension length of the second reversing surface 212 in the circumferential direction x 2; or the position of the linear light spot can be adjusted by replacing the second reversing surface 212 with different slopes, so that a certain rotation angle is formed between the adjusted linear light spot and the linear light spot before adjustment, wherein the different slopes of the second reversing surface 212 can refer to the inclination degree of the second reversing surface 212 relative to the rotation axis. In addition, the reversing element 20 is formed by matching the first reversing part 22 and the second reversing part 23, so that the production is convenient, and the cost is greatly saved.
In some embodiments, the first commutation segment 22 has a first transition surface 221, the first transition surface 221 being spaced apart from the first commutation surface 211 in the axial direction x1, the second commutation segment 23 has a second transition surface 231, the second transition surface 231 being spaced apart from the second commutation surface 212 in the axial direction x1, the first transition surface 221 abutting the second transition surface 231. In some application scenarios, the first transition surface 221 is spaced apart from the plurality of first reversing surfaces 211 by a different distance, and the second transition surface 231 is spaced apart from the plurality of second reversing surfaces 212 by a same distance, for example, the second reversing portion 23 has six second reversing surfaces 212, and features such as shapes, sizes, etc. of the six second reversing surfaces 212 are substantially the same, the second transition surface 231 is spaced apart from a starting point of each second reversing surface 212 by a same distance, and the second transition surface 231 is spaced apart from an ending point of each second reversing surface 212 by a same distance, and similarly, the second transition surface 231 is spaced apart from each corresponding position between the starting point and the ending point of each second reversing surface 212 by a same distance. The first transition surface 221 abuts against the second transition surface 231, so that a plurality of reversing units 21 are formed correspondingly, and in this embodiment, the spacing dimension D of each reversing unit 21 can be understood as the sum of the spacing distance from the first reversing surface 211 to the first transition surface 221 and the spacing distance from the second transition surface 231 to the second reversing surface 212. Therefore, the interval dimension D of the reversing unit 21 can be flexibly adjusted only by replacing different first reversing portions 22, the flexibility of adjusting the interval distance of the linear light spots is improved, different scanning light spots 50 can be conveniently formed, and meanwhile, the first reversing surface 211, the first transition surface 221 and the second transition surface 231 are all planes, so that the production is convenient, and the production cost is further saved.
Referring to fig. 1 and 5, fig. 5 is a schematic structural diagram of an embodiment of a fly-eye lens of a laser scanning apparatus according to the present application.
In some embodiments, the laser scanning device 1 further includes a fly-eye lens 40, and the fly-eye lens 40 is located downstream of the reversing element 20 on the optical path of the initial light beam 11, for receiving the initial light beam 11 and performing multi-point emission. Fly-eye lens 40 refers to an optical lens having a plurality of tiny lens elements that receive light from different directions simultaneously. The initial light beam 11 after being diverted by the reversing element 20 can form a linear light spot on the imaging plane, and when the linear light spot is projected on the fly-eye lens 40, the linear light spot can be polymerized into a point through the fly-eye lens 40, so that the scanning light spot 50 is converted into a point light spot from the linear light spot. Illustratively, when the initial light beam 11 sequentially forms six linear light spots arranged at intervals on the imaging plane, the fly-eye lens 40 may be correspondingly provided with at least six columns of lens units, and the six linear light spots may be sequentially projected on the six columns of lens units, respectively, so that six columns of spot-like light spots are sequentially formed on the other side of the fly-eye lens 40. It will be appreciated that the imaging rule of the six rows of punctiform light spots is substantially the same as that of the six linear light spots, and illustratively, the first linear light spot may correspondingly form a first punctiform light spot through the fly eye lens 40, the second linear light spot may correspondingly form a second punctiform light spot through the fly eye lens 40, the third linear light spot may correspondingly form a third punctiform light spot, the fourth linear light spot may correspondingly form a fourth punctiform light spot, the fifth linear light spot may correspondingly form a fifth punctiform light spot, and the sixth linear light spot may correspondingly form a sixth punctiform light spot. When the second punctiform facula is formed, the first punctiform facula disappears; when the third punctiform facula is formed, the second punctiform facula disappears; similarly, when the sixth punctiform facula is formed, the fifth punctiform facula disappears; when the first spot is formed again, the sixth spot disappears. The same column of punctiform faculae are arranged at intervals in the extending direction of the corresponding linear faculae, and the punctiform faculae of different columns are arranged at intervals in the interval direction of a plurality of linear faculae. Thus, the fly-eye lens 40 can be matched with the reversing element 20 to form a punctiform scanning light spot 50, and under some application scenes, the punctiform light spot can be formed on a target object, such as skin, wherein when the punctiform light spot is formed on the skin, collagen generation can be stimulated, so that effects of whitening, skin tendering and the like are realized.
In summary, the present application provides a laser scanning device 1, wherein the laser scanning device 1 includes: a light emitting element 10 and a reversing element 20, the light emitting element 10 being adapted to emit an initial light beam 11; the reversing element 20 is located on the optical path of the initial light beam 11, and at least one of the reversing element 20 and the light-emitting element 10 can rotate around the rotation axis y so that the initial light beam 11 is emitted to different positions of the reversing element 20 around the rotation axis y; the reversing element 20 includes a plurality of reversing units 21, the reversing units 21 are arranged around a rotation axis y, each reversing unit 21 includes a first reversing surface 211 and a second reversing surface 212 which are arranged opposite to each other, the first reversing surface 211 is perpendicular to the rotation axis y, the second reversing surface 212 is obliquely arranged along a circumferential direction x2 around the rotation axis y, a space dimension D of the first reversing surface 211 and the second reversing surface 212 of two adjacent reversing units 21 in an axial direction x1 where the rotation axis y is located is different, and the initial light beam 11 is obliquely arranged with the first reversing surface 211. Through the above embodiment, the light emitting element 10 emits the initial light beam 11, the initial light beam 11 is disposed obliquely to the first reversing surface 211, the initial light beam 11 enters the reversing unit 21 from one of the first reversing surface 211 or the second reversing surface 212, and exits the reversing unit 21 from the other, and the first reversing surface 211 and the second reversing surface 212 of the adjacent two reversing units 21 are disposed obliquely along the circumferential direction x2 around the rotation axis y, so that the optical paths of the initial light beam 11 in the reversing units 21 with different spacing dimensions D are different, so that the spot imaging positions of the initial light beam 11 emitted from the different reversing units 21 in the imaging plane are different, and the spot imaging positions of the initial light beam 11 in the imaging plane are also mutually spaced due to the discontinuous dimensional change between the different spacing dimensions D, and the second reversing surface 212 is disposed obliquely along the circumferential direction x2 around the rotation axis y, so that the initial light beam 11 can form a linear spot on the imaging plane. Therefore, the initial light beam 11 passes through the reversing units 21 of the reversing element 20, a plurality of linear light spots which are mutually spaced can be formed on the imaging plane, the structure is simple, and the cost is reduced. Compared with other laser scanning devices, the laser scanning device 1 of the application has simpler structure and more flexible ways of adjusting the shape, position and the like of the formed linear light spots.
The foregoing description is only of embodiments of the present application, and is not intended to limit the scope of the application, and all equivalent structures or equivalent processes using the descriptions and the drawings of the present application or directly or indirectly applied to other related technical fields are included in the scope of the present application.
Claims (9)
1. A laser scanning device, characterized in that the laser scanning device comprises:
A light emitting element for emitting an initial light beam;
A reversing element located on the optical path of the initial light beam, wherein at least one of the reversing element and the light-emitting element can rotate around a rotation axis so as to enable the initial light beam to be emitted to different positions of the reversing element around the rotation axis;
The reversing element comprises a plurality of reversing units, the reversing units are arranged around the rotating axis, each reversing unit comprises a first reversing surface and a second reversing surface which are arranged in a reverse mode, the first reversing surfaces are perpendicular to the rotating axis, the second reversing surfaces are obliquely arranged along the circumferential direction around the rotating axis, the first reversing surfaces and the second reversing surfaces of two adjacent reversing units are different in interval size in the axial direction where the rotating axis is located, and the initial light beams are obliquely arranged with the first reversing surfaces.
2. The laser scanning device according to claim 1, wherein at least part of the space dimension of at least part of the reversing units varies in the circumferential direction.
3. The laser scanning device of claim 1, wherein the difference in the spacing dimension between adjacent two of the plurality of commutation cells is the same.
4. A laser scanning device as claimed in claim 3, wherein a plurality of said reversing units comprises at least a first reversing unit and a second reversing unit arranged adjacently, a first spacing dimension of said first reversing surface and said second reversing surface of said first reversing unit in said axial direction being smaller than a second spacing dimension of said first reversing surface and said second reversing surface of said second reversing unit in said axial direction;
The spacing dimension of a plurality of the commutation cells is between the first spacing dimension and the second spacing dimension.
5. The laser scanning device according to claim 4, wherein the space size of the plurality of the reversing units between the first reversing unit and the second reversing unit sequentially increases in the circumferential direction.
6. The laser scanning device as claimed in claim 5, wherein a plurality of the reversing units sequentially receive the initial light beam in the circumferential direction and reverse the initial light beam to emit.
7. The laser scanning device of claim 1, further comprising a drive assembly coupled to the reversing element, the drive assembly configured to drive the reversing element to rotate about the axial direction to pass the initial beam through a plurality of the reversing elements.
8. The laser scanning device of claim 1, further comprising a fly-eye lens on the optical path of the initial beam, downstream of the reversing element, for receiving the initial beam and performing multi-point exit.
9. The laser scanning device according to any one of claims 1 to 8, wherein the laser scanning device includes a first reversing portion and a second reversing portion arranged in the axial direction, the first reversing portion and the second reversing portion cooperate to form the plurality of reversing units, the first reversing surfaces of the plurality of reversing units are sequentially arranged in the first reversing portion, the second reversing surfaces of the plurality of reversing units are sequentially arranged in the second reversing portion, and one of the first reversing surfaces is provided corresponding to one of the second reversing surfaces to form the reversing unit.
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|---|---|---|---|---|
| US5274492A (en) * | 1992-07-02 | 1993-12-28 | Mahmoud Razzaghi | Light spot size and shape control for laser projector |
| US20130077083A1 (en) * | 2011-09-22 | 2013-03-28 | Shuichi Suzuki | Optical beam scanner and laser radar unit |
| CN110398795A (en) * | 2018-04-17 | 2019-11-01 | 通快激光有限责任公司 | Scanning mirror, scanning device and illumination device |
| US20220163786A1 (en) * | 2020-07-31 | 2022-05-26 | David E. Hargis | Laser systems and optical devices for laser beam shaping |
| CN117677460A (en) * | 2021-09-30 | 2024-03-08 | 日东电工株式会社 | Laser processing method, optical sheet manufacturing method, and laser processing apparatus |
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- 2024-04-28 CN CN202410518867.XA patent/CN118091932B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5274492A (en) * | 1992-07-02 | 1993-12-28 | Mahmoud Razzaghi | Light spot size and shape control for laser projector |
| US20130077083A1 (en) * | 2011-09-22 | 2013-03-28 | Shuichi Suzuki | Optical beam scanner and laser radar unit |
| CN110398795A (en) * | 2018-04-17 | 2019-11-01 | 通快激光有限责任公司 | Scanning mirror, scanning device and illumination device |
| US20220163786A1 (en) * | 2020-07-31 | 2022-05-26 | David E. Hargis | Laser systems and optical devices for laser beam shaping |
| CN117677460A (en) * | 2021-09-30 | 2024-03-08 | 日东电工株式会社 | Laser processing method, optical sheet manufacturing method, and laser processing apparatus |
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