CN112713486A - Operating method of multipoint laser generating device, laser generating device and laser system - Google Patents

Operating method of multipoint laser generating device, laser generating device and laser system Download PDF

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Publication number
CN112713486A
CN112713486A CN201911220373.9A CN201911220373A CN112713486A CN 112713486 A CN112713486 A CN 112713486A CN 201911220373 A CN201911220373 A CN 201911220373A CN 112713486 A CN112713486 A CN 112713486A
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spot
laser
laser light
optical system
multipoint
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李釨仁
金昡东
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Hironic Co ltd
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Hironic Co ltd
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
    • H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
    • H01S3/005—Optical devices external to the laser cavity, specially adapted for lasers, e.g. for homogenisation of the beam or for manipulating laser pulses, e.g. pulse shaping
    • 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
    • A61B18/203—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 applying laser energy to the outside of the body
    • 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
    • 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
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/42—Diffraction optics, i.e. systems including a diffractive element being designed for providing a diffractive effect
    • G02B27/4205—Diffraction optics, i.e. systems including a diffractive element being designed for providing a diffractive effect having a diffractive optical element [DOE] contributing to image formation, e.g. whereby modulation transfer function MTF or optical aberrations are relevant
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B3/00—Simple or compound lenses
    • G02B3/0006—Arrays
    • G02B3/0037—Arrays characterized by the distribution or form of lenses
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
    • H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
    • H01S3/005—Optical devices external to the laser cavity, specially adapted for lasers, e.g. for homogenisation of the beam or for manipulating laser pulses, e.g. pulse shaping
    • H01S3/0085—Modulating the output, i.e. the laser beam is modulated outside the laser cavity
    • 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
    • A61B2018/205545—Arrangements for particular spot shape, e.g. square or annular
    • 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
    • A61B2018/205547—Controller with specific architecture or programmatic algorithm for directing scan path, spot size or shape, or spot intensity, fluence or irradiance

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  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Optics & Photonics (AREA)
  • Engineering & Computer Science (AREA)
  • Electromagnetism (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Biomedical Technology (AREA)
  • Veterinary Medicine (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
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  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Plasma & Fusion (AREA)
  • Surgery (AREA)
  • General Physics & Mathematics (AREA)
  • Pathology (AREA)
  • Radiology & Medical Imaging (AREA)
  • Otolaryngology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Medical Informatics (AREA)
  • Molecular Biology (AREA)
  • Biophysics (AREA)
  • Laser Beam Processing (AREA)
  • Laser Surgery Devices (AREA)

Abstract

The laser generating apparatus according to an embodiment of the present invention includes: a laser light source that generates single-point laser light; a multipoint generation unit that changes the single-point laser light incident from the laser light source to a multipoint laser light and outputs the changed multipoint laser light; a spot size adjusting optical system that adjusts the spot size of the output multi-spot laser beam and irradiates the multi-spot laser beam to a target; a spot sensor that detects a shape of a spot of the multi-spot laser beam irradiated to a target; and an optical system controller for controlling the spot size adjusting optical system according to the detected shape of the spot of the multi-spot laser beam.

Description

Operating method of multipoint laser generating device, laser generating device and laser system
Technical Field
The present invention relates to a method for operating a multipoint laser generating device (multipoint laser generating device), a laser generating device using the same, and a laser system, and more particularly, to a method for operating a multipoint laser generating device, a laser generating device using the same, and a laser system, which can control a spot size adjusting optical system according to the shape of a detected spot (spot) of a multipoint laser beam.
Background
Laser light has three characteristics of monochromaticity (monochromaticity), coherence (coherence) and collimation (collimatized), and when the laser light contacts tissues, transmission, scattering, reflection and absorption occur.
In order to exert a biological effect, laser light needs to be absorbed by tissue, and the degree to which the tissue absorbs the laser light depends on the degree to which the natural frequency of molecules constituting the structural component of the tissue coincides with the frequency of the incident laser light. Therefore, the wavelength of the laser light used for medical or cosmetic purposes is very important to select.
In addition, although the shape of the laser beam to be irradiated is generally a shape of a single spot, a laser beam of a multi-spot shape may be used as needed.
Disclosure of Invention
Problems to be solved by the invention
The technical problem to be solved by the present invention is to provide an operation method of a multipoint laser generating device capable of controlling a spot size adjusting optical system according to a detected spot shape of a multipoint laser, a laser generating device using the same, and a laser system.
Means for solving the problems
The laser generating apparatus according to an embodiment of the present invention may include: a laser light source that generates a single-spot laser light; a multipoint generation unit that changes the single-point laser light incident from the laser light source to a multipoint laser light and outputs the changed multipoint laser light; a spot size adjusting optical system that adjusts the spot size of the output multi-spot laser beam and irradiates the multi-spot laser beam to a target; a spot sensor that detects a shape of a spot of the multi-spot laser beam irradiated to a target; and an optical system controller for controlling the spot size adjusting optical system according to the detected shape of the spot of the multi-spot laser beam.
According to an embodiment, the multipoint generating unit may include: micro Lens Array (MLA) or Diffractive Optical Element (DOE).
According to an embodiment, the spot-size adjusting optical system may directly receive the multipoint laser light output from the multipoint generating unit.
According to an embodiment, the optical system controller may physically control the spot size adjusting optical system according to a shape of the detected spot of the multi-spot laser light.
According to an embodiment, when the shape of the detected spot of the multi-spot laser light is not a circle, the optical system controller may physically control the spot size adjusting optical system to reduce the spot size of the multi-spot laser light.
According to an embodiment, when the detected shape of the spot of the multipoint laser light is not a circle, the optical system controller may control a concave lens closest to the multipoint generating unit among the plurality of lenses included in the spot size adjusting optical system to be away from the multipoint generating unit to reduce the spot size of the multipoint laser light.
According to an embodiment, the spot size adjusting optical system may adjust the spot size of the multi-spot laser and the interval between spots included in the multi-spot laser together.
According to an embodiment, when the detected shape of the spot of the multi-spot laser light is not a circle, the optical system controller may physically control the spot size adjusting optical system to reduce the spot size of the multi-spot laser light or to increase the interval between spots included in the multi-spot laser light.
The action method of the laser generation device according to one embodiment of the invention can comprise the following steps: generating a single-point laser; changing the generated single-point laser into multi-point laser and outputting the multi-point laser; adjusting the spot size of the output multi-spot laser and irradiating the multi-spot laser to a target; detecting a shape of a spot of the multi-spot laser light irradiated to the target; and readjusting the spot size of the multi-spot laser according to the detected spot shape of the multi-spot laser.
A laser system according to an embodiment of the present invention may include: a user interface that receives input from a user; and a laser generating device that generates laser light corresponding to the user input, the laser generating device may include: a laser light source that generates single-point laser light; a multipoint generation unit that changes the single-point laser light incident from the laser light source to a multipoint laser light and outputs the changed multipoint laser light; a spot size adjusting optical system that adjusts the spot size of the output multi-spot laser light and irradiates the target with the laser light; a spot sensor that detects a shape of a spot of the multi-spot laser beam irradiated to a target; and an optical system controller for controlling the spot size adjusting optical system according to the detected shape of the spot of the multi-spot laser beam.
Effects of the invention
The method and the device according to the embodiment of the invention have the following effects: the spot size adjusting optical system is controlled in accordance with the shape of the spot of the detected multipoint laser light, whereby irradiation of laser light of an intensity larger than an intended intensity due to overlapping of light spots (light spots) can be prevented from occurring on the target to which the multipoint laser light is irradiated.
Drawings
For a more complete understanding of the figures referenced in the detailed description of the invention, a brief description of each figure is provided.
Fig. 1 is a block diagram of a laser system according to an embodiment of the present invention.
FIG. 2 is a block diagram of an embodiment of a laser generating device according to FIG. 1.
Fig. 3 is a view showing the shape of a light spot which can be irradiated to a target by the laser generating apparatus shown in fig. 2.
Fig. 4 is a flowchart of an operation method of a laser generating apparatus according to an embodiment of the present invention.
Description of reference numerals:
10: laser system
100: laser generator
200: processor with a memory having a plurality of memory cells
300: memory device
400: user interface
500: display device
600: a power source.
Detailed Description
The technical idea of the present invention can be variously changed and various embodiments can be provided, and specific embodiments are illustrated in the drawings and described in detail below. However, it is not intended that the technical idea of the present invention be limited to the specific embodiments, but it should be understood that it includes all changes, equivalents and substitutes falling within the scope of the technical idea of the present invention.
When explaining the technical idea of the present invention, a detailed explanation thereof will be omitted when it is judged that a detailed explanation about the related known art may obscure the gist of the present invention. Also, the numbers (e.g., first, second, etc.) used in the description of the present specification are merely identification symbols for distinguishing one component from another component.
In the present specification, when one component is referred to as being "connected" or "coupled" to another component, the one component may be directly connected or directly coupled to the other component, but unless otherwise specified, it should be understood that the one component may be connected or coupled to the other component with intervening components.
The terms "part", "device", "piece", and "module" described in the present specification refer to a Unit that processes at least one function or operation, and may be embodied in hardware, software, or a combination of hardware and software, such as a Processor (Processor), a microprocessor (Micro Processor), a microcontroller (Micro Controller), a Central Processing Unit (CPU), a Graphics Processing Unit (GPU), an Acceleration Processor (APU), a Drive Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), and a Field Programmable Gate Array (FPGA), or may be embodied in a form of a combination with a memory (memory) that stores data necessary for Processing at least one function or operation.
Moreover, it should be clear that the distinction of structural parts in this specification is only a distinction according to the main function for which each structural part is responsible. That is, 2 or more structural parts to be described below may be combined into one structural part, or one structural part may be divided into 2 or more parts by a further subdivision function. Each of the components described below may additionally perform a part or all of the functions of the other components in addition to the main function of its own, and it is needless to say that a part of the main functions of each of the components may be performed by the other components.
Fig. 1 is a block diagram of a laser system according to an embodiment of the present invention.
Referring to fig. 1, a laser system 10 may include a laser generating device 100, a processor 200, a memory 300, a user interface 400, a display 500, and a power supply 600.
According to an embodiment, the laser system 10 may be embodied as a medical apparatus or a cosmetic apparatus using laser, but is not limited thereto.
According to an embodiment, when the laser system 10 is embodied as a medical apparatus or a cosmetic apparatus, it may be configured in a form of a handle (handview) that is divided into a main body and a user can hold in hand, in consideration of convenience of use. In this case, the various structures 100 and 600 of the laser system 10 may be included separately in the body and handle.
The laser generating device 100 may receive power from a power supply 600, thereby generating laser light exhibiting a plurality of spots (spots).
The detailed structure and operation of the laser beam generator 100 will be described below with reference to fig. 2.
The processor 200 may process and control the overall operation of the various structures 100 and 600 of the laser system 10.
According to an embodiment, the processor 200 may control the operation of the laser generating apparatus 100 according to the program code stored in the memory 300.
According to the embodiment, the generation pattern and intensity of the laser light generation apparatus 100, the number, size, and pitch of the spots of the laser light, and the like may be adjusted by the control of the processor 200.
According to an embodiment, the processor 200 may adjust the generation pattern, intensity of the laser light of the laser generating apparatus 100, the number, size, and interval of the laser light points, and the like, corresponding to the user input through the user interface 400.
The memory 300 may store various data required for the operation of the laser generating apparatus 100 or the control of the processor 200.
The user interface 400 is a structure in which a user can operate the laser generating apparatus 100.
According to an embodiment, the user interface 400 may include physical input structures, such as keys, for receiving user operations.
According to another embodiment, the user interface 400 may be embodied integrally with the display 500, in which case the display 500 may also include a touch screen for receiving user operations.
The display 500 may display various information such as guide information related to the state of the laser generating apparatus 100 and the operation of the laser generating apparatus 100.
According to an embodiment, at least a portion of the structure (e.g., 200-600) of the laser system 10 may be embodied as included in the laser generating apparatus 100.
FIG. 2 is a block diagram of an embodiment of a laser generating device according to FIG. 1. Fig. 3 is a view showing the shape of a spot (light spot) that can be irradiated to a target by the laser generating apparatus shown in fig. 2.
Referring to fig. 1 and 2, the laser generating apparatus 100 may include: a laser light source (laser light source)110, a multi-spot generating unit (multi-spot generating unit)120, a spot size adjusting optical system 130, a spot sensor (light spot sensor)140, and an optical system controller (optical system controller) 150.
The laser light source 110 may be connected to the power supply 600 and receive power from the power supply 600.
The laser light source 110 can generate single-point laser light using power received from the power supply 600.
The multipoint generation unit 120 may change the single-point laser light incident from the laser light source 110 into multipoint laser light and output the multipoint laser light.
According to an embodiment, the multi-point generating unit 120 may be embodied in a form including a Micro Lens Array (MLA) or a Diffractive Optical Element (DOE).
The spot size adjusting optical system 130 may adjust the spot size of the multi-spot laser light output through the multi-spot generating unit 120 and irradiate the target 1000.
According to the embodiment, the spot-size adjusting optical system 130 may enlarge the spot size of the multi-spot laser light output by the multi-spot generating unit 120 and irradiate the target 1000.
The spot-size adjusting optical system 130 may directly receive the multi-spot laser light output from the multi-spot generating unit 120 without passing through other units.
The spot-size adjusting optical system 130 may include a plurality of lenses 131, 132.
According to an embodiment, the 1 st lens 131 may be formed as a concave lens whose both surfaces are concave, and the 2 nd lens 132 may be formed as a convex lens whose one surface is convex. The 1 st lens 131 may be disposed relatively close to the multi-point generation unit 120, and the 2 nd lens 132 may be disposed relatively close to the target 1000. At this time, when the multi-spot laser passes through the 1 st lens 131, its spot size becomes large, and when passing through the 2 nd lens 132, it can be irradiated in a direction parallel to the target 1000.
In the plurality of lenses 131, 132 included in the spot-size adjusting optical system 130, the position of at least any one of the lenses can be physically adjusted. According to an embodiment, a driving device (not shown) for moving at least any one of the plurality of lenses 131, 132 may be included in the spot-size adjusting optical system 130.
The spot-size adjusting optical system 130 may adjust the size of the multi-spot laser or the interval between spots included in the multi-spot laser by physically adjusting at least any one of the plurality of lenses 131, 132.
The target 1000 may be irradiated with a spot LSP whose size is adjusted by the spot size adjusting optical system 130.
Referring to fig. 3, the 2 nd STATE #2 is a shape of the multi-spot laser light displayed on the target 1000 when the spot size is adjusted to be larger than the spot size of the 1 st STATE # 1.
In particular, when the size of the light spot is too large, an overlap region RG-OV where the light spots overlap may occur as in STATE #3 of STATE 3. For ease of illustration, the third STATE #3 illustrates only 2 spots.
The overlap region RG-OV, as in STATE #3 of STATE #3, may be caused by errors that occur when physically adjusting the position of the multiple lenses (e.g., 131, 132) of the spot-size adjusting optical system 130, or may be caused by incorrect user operation.
In STATE #3 of STATE 3, the overlap region RG-OV may be irradiated with laser light having a greater intensity than the laser light intended by the user, thereby causing a safety problem.
Returning to fig. 2, the spot sensor 140 may detect the shape of the spot of the multi-spot laser light irradiated to the target 1000.
According to an embodiment, the light point sensor 140 may be embodied to include an image sensor, but is not limited thereto.
According to an embodiment, the spot sensor 140 may detect all spots included in the multi-spot laser, or may detect at least a part of the spots.
The spot sensor 140 may communicate information about the shape of the detected spot of the multi-spot laser to the processor 200.
The processor 200 can determine the shape of the spot of the multi-spot laser light based on the information transmitted from the spot sensor 140. The processor 200 may determine whether the shape of the spot of the multi-spot laser light is circular. According to an embodiment, the processor 200 may extract the outer contour shape of the spot of the multi-spot laser light, thereby determining whether the shape of the spot is circular.
Referring to fig. 3, in the 1 st STATE #1 and the 2 nd STATE #2, the light spots do not overlap with each other, and thus, the shape of the light spot can be determined to be circular only.
In contrast, there is an overlap region RG-OV where the light spots overlap at the 3 rd STATE #3, and therefore, the shape of the light spot can be judged as a shape as indicated by a dotted line along the outline of the light spot. At this time, it can be judged that the shape of the light spot is not circular.
Returning to fig. 2, the optical system controller 150 may control the spot-size adjusting optical system 130 according to the determination result of the controller 200.
According to an embodiment, the optical system controller 150 may physically control the spot-size adjusting optical system 130 according to the determination result of the controller 200.
According to the embodiment, the optical system controller 150 may physically control the spot size adjusting optical system 130 to reduce the spot size of the multi-spot laser light when the shape of the spot of the multi-spot laser light is not a circle according to the determination result of the controller 200. For example, the optical system controller 150 may control a concave lens (e.g., 131) closest to the multipoint generation unit 120 among the plurality of lenses 131, 132 included in the spot size adjusting optical system 130 to be away from the multipoint generation unit 120.
According to another embodiment, the optical system controller 150 may control the spot-size adjusting optical system 130 to adjust the spot size of the multi-spot laser and the interval between the spots included in the multi-spot laser together when the shape of the spot of the multi-spot laser is not a circle according to the determination result of the controller 200. In this case, the optical system controller 150 may control the spot-size adjusting optical system 130 so that the interval between the spots included in the multi-spot laser becomes large.
FIG. 4 is a flowchart illustrating a method of operating a laser generator according to an embodiment of the invention.
Referring to fig. 1 to 4, the laser generating apparatus 100 may generate a single-spot laser (step S401).
The laser generating apparatus 100 may change the single-spot laser light into the multi-spot laser light and output the multi-spot laser light (step S402).
According to an embodiment, step S402 may be performed by a Micro Lens Array (MLA) or a Diffractive Optical Element (DOE) included in the laser generating apparatus 100.
The laser generating apparatus 100 may adjust the spot size of the multi-spot laser light output through step S402 and irradiate the target 1000 (step S403).
According to an embodiment, the spot size of the multi-spot laser may be enlarged and irradiated to the target 1000 by step S403.
The laser generating apparatus 100 may detect the shape of the spot of the multi-spot laser light irradiated to the target 1000 (step S404).
According to the embodiment, the laser generating apparatus 100 may determine whether the shape of the spot of the multi-spot laser irradiated to the target 1000 is a circle. Processor 200 may also be included in laser generating device 100.
The laser generating apparatus 100 may readjust the spot size of the multi-spot laser light according to the shape of the spot detected in step S404 (step S405).
According to the embodiment, the laser generating apparatus 100 may readjust the spot size of the multi-spot laser light only in the case where the shape of the spot detected in step S404 is not a circle. In this case, the laser beam generating apparatus 100 may readjust the spot size of the multi-spot laser beam to be small.
According to another embodiment, when the shape of the spot detected in step S404 is not a circle, the laser generating apparatus 100 may adjust the spot size of the multi-spot laser and the interval between spots included in the multi-spot laser together.
The present invention has been described in detail with reference to the preferred embodiments, but the present invention is not limited to the above embodiments, and various modifications and changes can be made by those having ordinary knowledge in the art within the technical spirit and scope of the present invention.

Claims (10)

1. A laser generating apparatus, comprising:
a laser light source that generates single-point laser light;
a multipoint generation unit that changes the single-point laser light incident from the laser light source to a multipoint laser light and outputs the changed multipoint laser light;
a spot size adjusting optical system that adjusts a spot size of the output multi-spot laser light and irradiates a target;
a spot sensor that detects a shape of a spot of the multi-spot laser light irradiated to a target; and
an optical system controller that controls the spot size adjusting optical system according to the detected shape of the spot of the multi-spot laser light.
2. The laser generating apparatus according to claim 1,
the multi-point generating unit includes a microlens array or a diffractive optical element.
3. The laser generating apparatus according to claim 1,
the spot-size adjusting optical system directly receives the multipoint laser light output from the multipoint generating unit.
4. The laser generating apparatus according to claim 1,
the optical system controller physically controls the spot size adjusting optical system according to the detected shape of the spot of the multi-spot laser.
5. The laser generating apparatus according to claim 4,
when the detected shape of the spot of the multi-spot laser light is not a circle, the optical system controller physically controls the spot size adjusting optical system to reduce the spot size of the multi-spot laser light.
6. The laser generating apparatus according to claim 1,
when the detected shape of the spot of the multipoint laser light is not a circle, the optical system controller controls a concave lens closest to the multipoint generation unit among the plurality of lenses included in the spot size adjustment optical system to be away from the multipoint generation unit, so that the spot size of the multipoint laser light is reduced.
7. The laser generating apparatus according to claim 1,
the spot size adjusting optical system adjusts together the spot size of the multi-spot laser and the interval between the spots included in the multi-spot laser.
8. The laser generating apparatus according to claim 7,
when the shape of the detected spot of the multi-spot laser light is not a circle, the optical system controller physically controls the spot size adjusting optical system to reduce the spot size of the multi-spot laser light or to increase the interval between spots included in the multi-spot laser light.
9. A method of operating a laser generating apparatus, comprising:
generating a single-point laser;
changing the generated single-point laser into multi-point laser and outputting the multi-point laser;
adjusting the spot size of the output multi-spot laser and irradiating the multi-spot laser to a target;
detecting a shape of a spot of the multi-spot laser light irradiated to a target; and
and a step of readjusting the spot size of the multi-spot laser according to the detected shape of the spot of the multi-spot laser.
10. A laser system, comprising:
a user interface that receives input from a user; and
a laser generating device that generates laser light corresponding to the input of the user,
the laser generating apparatus includes:
a laser light source that generates single-point laser light;
a multipoint generation unit that changes the single-point laser light incident from the laser light source to a multipoint laser light and outputs the changed multipoint laser light;
a spot size adjusting optical system that adjusts a spot size of the output multi-spot laser light and irradiates a target;
a spot sensor that detects a shape of a spot of the multi-spot laser light irradiated to a target; and
an optical system controller that controls the spot size adjusting optical system according to the detected shape of the spot of the multi-spot laser light.
CN201911220373.9A 2019-10-25 2019-12-03 Operating method of multipoint laser generating device, laser generating device and laser system Pending CN112713486A (en)

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KR1020190133778A KR102223083B1 (en) 2019-10-25 2019-10-25 Method for operating multi-spot laser generating device, laser generating device and laser system using the same
KR10-2019-0133778 2019-10-25

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Citations (7)

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