WO2014079374A1 - 双侧制冷型医疗美容用半导体激光器系统 - Google Patents

双侧制冷型医疗美容用半导体激光器系统 Download PDF

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Publication number
WO2014079374A1
WO2014079374A1 PCT/CN2013/087590 CN2013087590W WO2014079374A1 WO 2014079374 A1 WO2014079374 A1 WO 2014079374A1 CN 2013087590 W CN2013087590 W CN 2013087590W WO 2014079374 A1 WO2014079374 A1 WO 2014079374A1
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Prior art keywords
semiconductor laser
optical waveguide
laser system
block
double
Prior art date
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PCT/CN2013/087590
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English (en)
French (fr)
Inventor
刘兴胜
戴晔
孙尧
吴迪
宗恒军
同理顺
蔡磊
Original Assignee
西安炬光科技有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Priority claimed from CN201210479917.5A external-priority patent/CN102935012B/zh
Priority claimed from CN201210480599.4A external-priority patent/CN102961829B/zh
Application filed by 西安炬光科技有限公司 filed Critical 西安炬光科技有限公司
Priority to US14/646,436 priority Critical patent/US9510907B2/en
Priority to EP13856436.4A priority patent/EP2923668B1/en
Priority to KR1020157016567A priority patent/KR101667896B1/ko
Priority to ES13856436.4T priority patent/ES2672325T3/es
Publication of WO2014079374A1 publication Critical patent/WO2014079374A1/zh

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Classifications

    • 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
    • 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
    • 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
    • A61N5/0617—Hair treatment
    • 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
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/24—Coupling light guides
    • G02B6/42—Coupling light guides with opto-electronic elements
    • G02B6/4201—Packages, e.g. shape, construction, internal or external details
    • G02B6/4204—Packages, e.g. shape, construction, internal or external details the coupling comprising intermediate optical elements, e.g. lenses, holograms
    • G02B6/4206—Optical features
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/24—Coupling light guides
    • G02B6/42—Coupling light guides with opto-electronic elements
    • G02B6/4201—Packages, e.g. shape, construction, internal or external details
    • G02B6/4266—Thermal aspects, temperature control or temperature monitoring
    • G02B6/4268—Cooling
    • 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
    • A61B2018/00005—Cooling or heating of the probe or tissue immediately surrounding the probe
    • A61B2018/00011—Cooling or heating of the probe or tissue immediately surrounding the probe with fluids
    • A61B2018/00023—Cooling or heating of the probe or tissue immediately surrounding the probe with fluids closed, i.e. without wound contact by the fluid
    • 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
    • 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
    • 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
    • A61B2018/2065—Multiwave; Wavelength mixing, e.g. using four or more wavelengths
    • 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
    • H01S5/00—Semiconductor lasers
    • H01S5/02—Structural details or components not essential to laser action
    • H01S5/024—Arrangements for thermal management
    • H01S5/02407—Active cooling, e.g. the laser temperature is controlled by a thermo-electric cooler or water cooling
    • H01S5/02415—Active cooling, e.g. the laser temperature is controlled by a thermo-electric cooler or water cooling by using a thermo-electric cooler [TEC], e.g. Peltier element
    • 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
    • H01S5/00—Semiconductor lasers
    • H01S5/02—Structural details or components not essential to laser action
    • H01S5/024—Arrangements for thermal management
    • H01S5/02407—Active cooling, e.g. the laser temperature is controlled by a thermo-electric cooler or water cooling
    • H01S5/02423—Liquid cooling, e.g. a liquid cools a mount of the laser
    • 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
    • H01S5/00—Semiconductor lasers
    • H01S5/40—Arrangement of two or more semiconductor lasers, not provided for in groups H01S5/02 - H01S5/30
    • H01S5/4025—Array arrangements, e.g. constituted by discrete laser diodes or laser bar
    • H01S5/4031—Edge-emitting structures
    • H01S5/4043—Edge-emitting structures with vertically stacked active layers
    • H01S5/405—Two-dimensional arrays

Definitions

  • the invention belongs to the field of semiconductor laser application, and relates to a semiconductor laser system for double-side refrigeration type medical cosmetic.
  • Semiconductor lasers are particularly suitable for the manufacture of medical devices due to their small size, light weight, long life, low power consumption and wide wavelength coverage.
  • laser hair removal systems are: ruby lasers (wavelength 694 nm), emerald gem lasers (wavelength 755 nm), semiconductor lasers (wavelength 810 nm) and Q-doped ytterbium-doped garnet lasers (wavelength 1064 nm).
  • ruby lasers wavelength 694 nm
  • emerald gem lasers wavelength 755 nm
  • semiconductor lasers wavelength 810 nm
  • Q-doped ytterbium-doped garnet lasers wavelength 1064 nm
  • laser hair removal operations There will be 5 million laser hair removal operations worldwide in 2010.
  • Another important application of semiconductor lasers in the cosmetic field is skin reconstruction surgery for wrinkle removal and skin rejuvenation.
  • the laser is absorbed by the moisture in the dermal collagen tissue, producing a thermal effect that stimulates the regeneration and remodeling of the collagen, smoothing and rejuvenating the skin and restoring elasticity.
  • the laser can also be used to treat freckles, traumatic pigmentation, tattoo removal, eyebrows, eyeliner and other black and blue pigment lesions.
  • the most common source of heat in ophthalmology is semiconductor lasers, which can be used to treat a variety of refractory glaucoma, refractory high intraocular pressure after silicone oil injection, and photocoagulation and fixation of the retina.
  • the Chinese Patent Licensing Bulletin No. CN1452465 discloses a laser hair removal device for a utility model of Yamang Co., Ltd., Japan.
  • the device uses a semiconductor laser with an output power of 5mW-1500mw and a wavelength of 600nm-1600nm for depilation. Because the system output power is low, the spot size is small, the wavelength output is not adjustable, and the depilation efficiency is very low.
  • An object of the present invention is to overcome the above-mentioned shortcomings of the background art and to provide a double-side refrigerating type medical cosmetic semiconductor laser system in which a contact window can directly contact the skin.
  • Bilateral refrigeration medical cosmetic semiconductor laser system including
  • a semiconductor laser array formed by stacking a plurality of semiconductor lasers
  • An optical waveguide located at the front end of the light emitting surface of the semiconductor laser array,
  • the semiconductor laser array is mounted on the second water passing block via an insulating layer
  • the first water passing block is divided into a base portion and a U-shaped head located above the base portion, and a middle portion and a rear portion of the optical waveguide are embedded in the u-shaped head, and a fixing block is disposed above the corresponding optical waveguide to be pressed Fixed optical waveguide;
  • a gap is left between the optical waveguide and the sidewall of the u-shaped head, and a pair of thermoelectric semiconductor coolers (TEC) and a pair of cooling blocks are arranged symmetrically on the outer side of the U-shaped head, and the pair of cooling blocks are directed to the optical waveguide.
  • TEC thermoelectric semiconductor coolers
  • the front portion extends and wraps the side walls of the contact window and the front of the optical waveguide.
  • a flow guiding groove for guiding the discharge of the accumulated water is provided on the surface of the base portion of the first water passing block.
  • the overall shape of the optical waveguide may be a cylinder, a truncated cone, a prism or a prismatic shape as needed.
  • the material of the above contact window may be sapphire, K9 glass, quartz glass, diamond or the like.
  • the material of the above optical waveguide may be sapphire, K9 glass, diamond or the like.
  • the contact window and the optical waveguide are sapphire one-piece.
  • the front end of the cooling block and the contact window as a whole are a boss type.
  • the first water block is connected in series or independent of the liquid cooling channel in the second water block.
  • the material of the above refrigeration block may be a metal material such as copper, aluminum, iron, gold-plated copper, gold-plated aluminum, stainless steel, etc., or may be diamond.
  • the material of the first water passing block and the second water passing block may be copper, aluminum, stainless steel, hard anodized aluminum, or plastic.
  • the semiconductor laser described above encapsulates the laser bar chip on the chip heat sink, and the chip heat sink It may be a microchannel heat sink, a macro channel heat sink or a metal block; the laser chip may be a single light spot chip or a multi light spot chip.
  • a collimating mirror for performing fast axis collimation or simultaneous collimation of the fast and slow axes may be further provided at the front end of the semiconductor laser.
  • the optical waveguide may be replaced with a direction perpendicular to the slow axis.
  • the pair of inner side is plated with a high-reflection light barrier.
  • the material of the light barrier is preferably copper plated or copper plated.
  • the fast axis divergence angle of the fast axis of the strip in the semiconductor laser array is 30 ⁇ 40 degrees, and the slow axis divergence angle is 5 ⁇ 10 degrees.
  • the beam divergence can be restricted, and the beam is in the optical waveguide. By multiple reflections, the resulting spot is homogenized, thus obtaining a uniform spot.
  • the unique refrigeration structure design makes the working end surface temperature in direct contact with the skin close to the freezing point, and the structure is compact and stable.
  • thermoelectric semiconductor cooler TEC
  • the temperature of the cooling block is adjusted to cool the contact window, and the cooling temperature can be as low as about 5 ° C (freezing point), which effectively reduces the pain during treatment.
  • the water-passing block under the thermoelectric semiconductor refrigerator can also form a series channel with the liquid-cooled channel of other components such as the semiconductor laser array, the semiconductor laser array
  • the semiconductor thermoelectric cooler (TEC) cooling water circuit is connected in series, connected by water-passing block, and has a simple structure, which overcomes the uncontrollable shortcoming of the water path of each branch of the traditional parallel waterway, effectively ensures the cooling of the semiconductor laser, and makes the laser work more stable. Guilty.
  • the convex shape design of the contact window eliminates the entry of auxiliary items such as cold gel during treatment, which makes the laser work more stable and reliable; and the contact window is easy to replace, can be attached to the skin when used, and the contact temperature is close to freezing point. It not only effectively protects normal skin from heat damage, relieves pain, but also increases treatment energy and improves curative effect. When in use, the skin is pressed under the contact window to cause the hair follicle to fall, so that the laser absorption can be increased by 30%-40%.
  • a flow guiding groove is arranged on the water passing block, so that the accumulated water formed by the condensation can be led out through the guiding groove to avoid contamination of the semiconductor laser.
  • a collimating mirror (mainly a fast-axis collimating mirror) is mounted on the laser chip, which can compress the divergence angle and pass through the optical waveguide to limit the divergence in the direction of the slow axis, and finally obtain a strip spot at the exit of the optical waveguide, so that The energy density of each spot reaches the demand of laser medical treatment, and the same or even better effect of multiple irradiation with uniform spot can be achieved by one scan.
  • a light blocking plate may be disposed perpendicular to the slow axis direction at the front end of the light emitting surface of the semiconductor laser, and light in the slow axis direction may be limited.
  • FIG. 1 is a perspective view showing the structure of an embodiment of the present invention
  • Figure 2 is a top plan view of the embodiment of Figure 1.
  • FIG. 3 is a schematic structural view of the present invention with a collimating mirror mounted thereon.
  • FIG. 4 is a schematic view of a light spot according to an embodiment of the present invention.
  • the double-sided cooling type medical cosmetic semiconductor laser system of the present invention can be used for laser hair removal.
  • the system mainly comprises a semiconductor laser array 1, an optical waveguide 2, a contact window 3, a cooling block 4, a semiconductor thermoelectric cooler (TEC) 5, a first water passing block 6 and a second water passing block 8.
  • TEC semiconductor thermoelectric cooler
  • the semiconductor laser array 1 is equipped with eight 808 nm, and the chip chip 12 with an output power of 120 W is mounted on the macro channel heat sink 7.
  • the semiconductor laser array 1 is mounted on the second water passing block 8.
  • the optical waveguide 2 is placed at the laser output end of the semiconductor laser array 1 for total reflection of the laser beam and output.
  • the contact window 3 is placed at the light exit end of the optical waveguide 2.
  • the first water passing block 6 is divided into a base portion and a U-shaped head portion located above the base portion.
  • the middle portion and the rear portion of the optical waveguide 2 are embedded in the U-shaped head, and a fixing block 11 is disposed above the corresponding optical waveguide to press
  • the optical waveguide 2 is tightly fixed.
  • a gap is left between the optical waveguide and the sidewall of the U-shaped head, and a pair of thermoelectric semiconductor coolers (TEC) and a pair of cooling blocks are arranged symmetrically on the outer side of the U-shaped head, and the pair of cooling blocks are directed to the optical waveguide.
  • the front portion extends and wraps the side walls of the contact window and the front of the optical waveguide.
  • first water-passing block 6 is installed on both sides of the optical waveguide 2, and the thermoelectric semiconductor cooler (TEC) 5 is installed outside the two first water-passing blocks 6, and the two sides of the optical waveguide 2 are One water block 6 Can be set to one.
  • the optical waveguide is pressed and fixed by the upper fixing block 11.
  • the cooling block 4 is mounted on the side of the thermoelectric semiconductor cooler (TEC) 5, and the front ends of the two cooling blocks 4 wrap the contact window 3 to cool the contact window 3.
  • the optical waveguide may have a prismatic shape or a truncated cone shape with beam convergence.
  • the material of the optical waveguide may be metal, the optical waveguide is hollow, and the four faces of the optical waveguide are coated with a reflective film; the material of the optical waveguide may also be a transparent material such as glass, resin, sapphire, diamond Etc., the optical waveguide can be either solid or hollow.
  • the optical waveguide is preferably sapphire, K9 glass, diamond.
  • the optical waveguide 2 and the contact window 3 may be a single piece, preferably a sapphire material. Most of the laser energy is confined to the optical waveguide 2 and does not overflow.
  • the front end of the cooling block and the entire contact window are preferably boss type.
  • the refrigeration block 4 is a high thermal conductivity material such as copper, aluminum, iron, gold plated copper, gold plated aluminum, stainless steel, diamond, and the like.
  • the second water-passing block 8 and the first water-passing block 6 are spatially separated, and a copper material is selected, and a plurality of liquid passages are provided in the middle thereof. Further, a guide groove for guiding the discharge of the accumulated water is provided on the surface of the base portion of the first water block.
  • the cooling water passage that is, the lower second water-passing block 8 and the cooling water passage of the thermoelectric semiconductor refrigerator (TEC) 5, that is, the first water-passing block are connected in series.
  • the water flow enters from the water inlet 9, passes through the semiconductor laser array 1, and then flows from the semiconductor laser array 1 to the two first water passing blocks 6, and then from the water discharge port 10.
  • liquid cooling channels in the first water passing block and the second water passing block may also be designed as independent structures for other considerations such as the processing technology.
  • the laser output power can reach 787.2 W
  • the contact window temperature can reach below 5 degrees Celsius
  • the light spot is uniform.
  • the semiconductor laser front end may further be provided with a collimating mirror 13 for performing fast axis collimation or simultaneous collimation of the fast and slow axes according to application requirements.
  • strips are obtained at the exit of the optical waveguide (as shown in Figure 4), so that the energy density of each spot reaches the demand of laser medical treatment.
  • the second scan can achieve the same or even better results with multiple exposures of uniform spots.
  • the optical waveguide can be replaced with a pair of light blocking plates, the pair of light blocking plates are perpendicular to the slow axis direction, and the inner side is plated with a high reflective film, which can also be limited.
  • the material of the light barrier is preferably copper plated or copper plated.

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  • Health & Medical Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Biomedical Technology (AREA)
  • Engineering & Computer Science (AREA)
  • Optics & Photonics (AREA)
  • Surgery (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Veterinary Medicine (AREA)
  • Animal Behavior & Ethology (AREA)
  • Public Health (AREA)
  • General Health & Medical Sciences (AREA)
  • Electromagnetism (AREA)
  • Molecular Biology (AREA)
  • Medical Informatics (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Otolaryngology (AREA)
  • Pathology (AREA)
  • Radiology & Medical Imaging (AREA)
  • General Physics & Mathematics (AREA)
  • Biophysics (AREA)
  • Semiconductor Lasers (AREA)
  • Radiation-Therapy Devices (AREA)
  • Lasers (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • Laser Surgery Devices (AREA)

Abstract

一种双侧制冷型医疗美容用半导体激光器系统，其接触窗可以直接与皮肤接触。该双侧制冷型医疗美容用半导体激光器系统，包括半导体激光器阵列、位于半导体激光器阵列发光面前端的光波导、贴靠在光波导出光口端的透明的接触窗、一对制冷块、以及第一通水块；第一通水块分为基底部和位于基底部上方的U型头部，光波导的中部和后部嵌于U型头部内，在相应的光波导上方设置有固定块以压紧固定光波导；光波导与U型头部的侧壁之间留有空隙，所述一对制冷块向光波导的前部延伸，并包裹接触窗侧壁和光波导前部。该系统采用独特的制冷结构设计，使得与皮肤直接接触的工作端面温度能够接近冰点，且结构紧凑、稳定。

Description

双侧制冷型医疗美容用半导体激光器系统 技术领域
本发明属于半导体激光器应用领域， 涉及一种双侧制冷型医疗美容用半 导体激光器系统。
背景技术
激光医疗作为激光应用的一个重要领域，发展非常迅速，逐步走向成熟。 半导体激光器因具有体积小、 重量轻、 寿命长、 功耗低、 波长覆盖广的特点， 特别适用于医疗设备的制造。
目前商业应用的激光脱毛系统有： 红宝石激光器 （波长 694nm)， 翠绿 宝石激光器 （波长 755nm) ，半导体激光器 （波长 810nm) 和调 Q掺钕钇铝 石榴石激光器 （波长 1064nm)。 其中半导体激光器脱毛已被证实是一种安全 和有效的激光脱毛方式。
据估计， 2010年内全球范围内进行的激光脱毛手术达 500万人次。 半导 体激光在美容领域的另一个重要应用是皮肤重建手术， 用于除皱、 嫩肤。 激 光被真皮胶原组织中的水分吸收，产生热效应，刺激胶原蛋白的再生和重塑， 使皮肤变得光滑细嫩， 恢复弹性。 此外， 激光还可用于治疗雀斑、 外伤性色 素沉着、 祛除紋身、 紋眉、 眼线等黑、 蓝色素病变
眼科中最常用的的热源是半导体激光器， 半导体激光器可用于治疗各种 难治性青光眼、 硅油注入术后难治性高眼压， 以及视网膜的光凝和固定等。
随着半导体激光技术的发展成熟， 自身特有的优势不断增大， 其在医疗 领域的应用也在不断拓展， 几乎覆盖了其它激光器的应用范围。 它不仅弥补 了高能 C02激光不易光纤传输、 操作不便的缺点， 而且弥补了灯泵浦固体激 光器效率低、 散热麻烦的缺点， 有望成为医用激光的主流。
中国专利授权公告号为 CN1452465 公开了日本雅芒有限公司实用新型 的激光脱毛装置。 该装置采用输出功率 5mW-1500mw， 波长 600nm-1600nm 的半导体激光器进行脱毛， 因为系统输出功率低， 光斑尺寸小， 波长输出也 不可调， 脱毛效率非常低。
发明内容 本发明的目的在于克服上述背景技术的缺点， 提供一种双侧制冷型医疗 美容用半导体激光器系统， 其接触窗可以直接与皮肤接触。
本发明的目的是通过以下技术方案解决的：
双侧制冷型医疗美容用半导体激光器系统， 包括
由多个半导体激光器叠加形成的半导体激光器阵列、
位于半导体激光器阵列发光面前端的光波导、
贴靠在光波导出光口端的透明的接触窗、
用以对接触窗进行传导冷却的一对制冷块、 以及
第一通水块；
半导体激光器阵列经绝缘层安装于第二通水块上；
所述第一通水块分为基底部和位于基底部上方的 U型头部，光波导的中 部和后部嵌于 u型头部内，在相应的光波导上方设置有固定块以压紧固定光 波导；
光波导与 u型头部的侧壁之间留有空隙，在 U型头部的外侧依次对称设 置有一对热电半导体制冷器 （TEC) 以及一对制冷块， 所述一对制冷块向光 波导的前部延伸， 并包裹接触窗侧壁和光波导前部。
基于上述基本技术方案， 本发明还进行了如下优化限定和改进： 在第一通水块的基底部表面设置有用以引导积水排出的导流槽。
根据需要， 上述光波导整体形状可以为圆柱、 圆台、 棱柱或棱台形。 上述接触窗的材料可以是蓝宝石、 K9玻璃、 石英玻璃、 金刚石等。 上述 光波导的材料可以是蓝宝石、 K9玻璃、 金刚石等。
上述接触窗和光波导最好为蓝宝石一体件。
上述制冷块的前端与接触窗整体为凸台型。
第一通水块与第二通水块内的液冷通道相串联或者相互独立。
上述制冷块的材料可以是金属材料， 如铜， 铝， 铁， 镀金铜， 镀金铝， 不锈钢等， 也可以是金刚石。
上述第一通水块和第二通水块的材料可以是铜， 铝， 不锈钢， 硬质阳极 化铝， 塑料。
上述的半导体激光器是将激光器巴条芯片封装在芯片热沉上， 芯片热沉 可以是微通道热沉、 宏通道热沉或者金属块； 激光器芯片可以是单发光点芯 片， 也可以是多发光点芯片。
在上述的半导体激光器前端可以进一步设置用以进行快轴准直或快慢 轴同时准直的准直镜。
基于上述本发明的基本解决方案， 在半导体激光器前端设置用以进行快 轴准直或快慢轴同时准直的准直镜的情况下， 也可以将所述光波导替换为垂 直于慢轴方向设置的一对内侧镀有高反膜的挡光板。
该挡光板的材料优选铜镀金或铜镀银。
本发明具有以下有益效果：
1、 通常半导体激光器阵列中巴条快轴方向的快轴发散角为 30~40度， 慢轴发散角为 5~10度； 使用光波导传输激光， 则能够限制光束发散， 光束 在光波导内通过多次反射， 最终出射的光斑被匀化， 因此得到均匀光斑。
2、采用独特的制冷结构设计，使得与皮肤直接接触的工作端面温度能够 接近冰点， 且结构紧凑、 稳定。
3、 采用热电半导体制冷器（TEC)作为冷却源， 调节制冷块的温度对接 触窗进行制冷，冷却温度可低至 5°C左右（冰点），有效减小了治疗时的痛楚。
4、 匹配设置具有液冷通道的通水块， 散热效率高； 另外， 热电半导体制 冷器下的通水块也可以与半导体激光器阵列等其他部件的液冷通道整体构成 一个串联通道， 半导体激光器阵列和半导体热电制冷器 （TEC) 冷却水路为 串联结构， 通过通水块连接， 结构简单， 克服了传统并联水路各支路水路不 可控制的缺点， 有效保证了半导体激光器的冷却， 使得激光器工作更稳定可 罪。
5、接触窗的凸台形设计， 杜绝了治疗时辅助物品如冷凝胶等的进入， 使 得激光器工作更稳定可靠； 且接触窗更换简便， 使用时能够与皮肤贴合， 接 触部温度接近冰点， 既有效地保护了正常皮肤不受热损伤， 减轻疼痛， 又可 增加治疗能量， 提高疗效。 使用时接触窗下压皮肤， 使毛囊倒伏， 使激光的 吸收量能够增加 30%-40%。
6、在通水块上设置导流槽，使结露形成的积水可以通过导流槽导出而避 免对半导体激光器的污染。 7、在激光芯片上安装有准直镜（主要是快轴准直镜）， 可将发散角压缩， 同时经过光波导， 限制慢轴方向的发散， 最终在光波导出口得到条形光斑， 使得每条光斑能量密度达到激光医疗的需求， 通过一次扫描即能达到采用均 匀光斑多次照射的同等甚至更优效果。 或者， 在半导体激光器的发光面前端 垂直于慢轴方向设置挡光板， 也可以限制慢轴方向的光。
附图说明
图 1 为本发明一个实施例的结构立体示意图；
图 2为图 1实施例的俯视示意图。
图 3为本发明安装有准直镜的结构示意图。
图 4为本发明实施例的光斑示意图。
附图标号说明： 1 半导体激光器阵列； 2光波导； 3 接触窗； 4制冷块; 5半导体热电制冷器 （TEC); 6第一通水块； 7芯片热沉； 8第二通水块； 9 进水口； 10出水口； 11固定块； 12激光芯片 （安装位置）； 13-准直镜。 具体实施方式
下面结合附图对本发明做进一步详细描述：
参见图 1和图 2， 本发明的双侧制冷型医疗美容用半导体激光器系统， 可用于激光脱毛。该系统主要包括半导体激光器阵列 1，光波导 2，接触窗 3， 制冷块 4， 半导体热电制冷器 （TEC) 5、 第一通水块 6和第二通水块 8。
半导体激光器阵列 1选用 8个 808nm，输出功率为 120W的巴条芯片 12 安装在宏通道热沉 7上。 半导体激光器阵列 1安装于第二通水块 8上。
光波导 2置于半导体激光器阵列 1激光出射端， 用于将激光光束进行全 反射后输出。 接触窗 3置于光波导 2出光口端。
第一通水块 6分为基底部和位于基底部上方的 U型头部，光波导 2的中 部和后部嵌于 U型头部内， 在相应的光波导上方设置有固定块 11 以压紧固 定光波导 2。 光波导与 U型头部的侧壁之间留有空隙， 在 U型头部的外侧依 次对称设置有一对热电半导体制冷器 （TEC) 以及一对制冷块， 这一对制冷 块向光波导的前部延伸， 并包裹接触窗侧壁和光波导前部。
也可以看作：在光波导 2两侧均安装第一通水块 6，在两个第一通水块 6 外侧均安装热电半导体制冷器 （TEC) 5， 光波导 2两侧的两个第一通水块 6 可以设置为一体的。光波导通过上方的固定块 11压紧固定。制冷块 4安装在 热电半导体制冷器（TEC) 5的夕卜侧， 两个制冷块 4的前端包裹接触窗 3， 对 接触窗 3进行制冷。
若需要进一步提高能量密度， 光波导可以采用具有光束汇聚作用的棱台 形或圆台形。 根据实际应用需要， 光波导的材料可以是金属， 则光波导为空 心， 且光波导内四个面均镀有反射膜； 光波导的材料也可以是透明材料， 如 玻璃、 树脂、 蓝宝石、 金刚石等， 则光波导既可以为实心， 也可以为空心。 光波导优选蓝宝石、 K9玻璃、 金刚石。
光波导 2和接触窗 3可以为一体件， 优选蓝宝石材料。 激光大部分能量 都被限制在光波导中 2传输， 而不会溢出。
制冷块的前端与接触窗整体最好为凸台型。 制冷块 4为高导热率材料， 比如铜， 铝， 铁， 镀金铜， 镀金铝， 不锈钢、 金刚石等。
第二通水块 8和第一通水块 6在空间上分开设置， 选用铜材料， 并在其 中部设置若干液体通道。 另外， 在第一通水块的基底部表面还设置用以引导 积水排出的导流槽。
半导体激光器阵列 1制冷水路即下方第二通水块 8和热电半导体制冷器 (TEC) 5的冷却水路即第一通水块为串联结构。 在第二通水块 8中， 水流 从进水口 9中进入， 通过半导体激光器阵列 1后， 从半导体激光器阵列 1在 到达两个第一通水块 6， 然后从出水口 10中流出。
当然， 出于加工工艺等其他考虑， 第一通水块与第二通水块内的液冷通 道也可以设计为相互独立的结构。
本实施例在接触窗 3端，激光输出功率可达到 787.2W,接触窗温度可以 达到 5摄氏度以下， 出光光斑均匀。
以上实施例仅作为本发明基本方案的一个优选实施方案， 不应视为对本 申请权利要求范围的限制。 本领域技术人员应当认识到， 基于本发明的基本 方案， 采用常规的配置， 也足以取得明显优于现有技术的效果。
另外， 如图 3所示， 根据应用需求， 半导体激光器前端可以进一步设置 用以进行快轴准直或快慢轴同时准直的准直镜 13。最终在光波导出口得到条 形光斑（如图 4所示）， 使得每条光斑能量密度达到激光医疗的需求， 通过一 次扫描即能达到采用均匀光斑多次照射的同等甚至更优效果。
而且， 在设置准直镜 13的情况下， 还可以将光波导替换为一对挡光板， 这一对挡光板垂直于慢轴方向， 且内侧镀有高反膜， 这样也能够起到可以限 制慢轴发散的作用。 挡光板的材料优选铜镀金或铜镀银。

Claims

权利要求书
1、 双侧制冷型医疗美容用半导体激光器系统， 其特征在于： 包括 由多个半导体激光器叠加形成的半导体激光器阵列、
位于半导体激光器阵列发光面前端的光波导、
贴靠在光波导出光口端的透明的接触窗、
用以对接触窗进行传导冷却的一对制冷块、 以及
第一通水块；
所述半导体激光器阵列经绝缘层安装于第二通水块上；
所述第一通水块分为基底部和位于基底部上方的 U型头部，光波导的中 部和后部嵌于 u型头部内，在相应的光波导上方设置有固定块以压紧固定光 波导；
光波导与 u型头部的侧壁之间留有空隙，在 U型头部的外侧依次对称设 置有一对热电半导体制冷器以及一对制冷块， 所述一对制冷块向光波导的前 部延伸， 并包裹接触窗侧壁和光波导前部。
2、根据权利要求 1所述的双侧制冷型医疗美容用半导体激光器系统，其 特征在于： 在第一通水块的基底部表面设置有用以引导积水排出的导流槽。
3、根据权利要求 1所述的双侧制冷型医疗美容用半导体激光器系统，其 特征在于： 所述光波导整体为棱柱或棱台形。
4、根据权利要求 1所述的双侧制冷型医疗美容用半导体激光器系统，其 特征在于： 接触窗的材料为蓝宝石、 K9玻璃、 石英玻璃或者金刚石； 光波导 的材料为蓝宝石、 K9玻璃或金刚石。
5、根据权利要求 1所述的双侧制冷型医疗美容用半导体激光器系统，其 特征在于： 接触窗和光波导为蓝宝石一体件。
6、根据权利要求 1所述的双侧制冷型医疗美容用半导体激光器系统，其 特征在于： 制冷块的前端与接触窗整体为凸台型。
7、根据权利要求 1所述的双侧制冷型医疗美容用半导体激光器系统，其 特征在于： 第一通水块与第二通水块内的液冷通道相串联或者相互独立。
8、根据权利要求 1所述的双侧制冷型医疗美容用半导体激光器系统，其 特征在于： 制冷块的材料为铜， 铝， 铁， 镀金铜， 镀金铝， 不锈钢或者金刚 石。
9、根据权利要求 1所述的双侧制冷型医疗美容用半导体激光器系统，其 特征在于： 第一通水块和第二通水块的材料为铜， 铝， 不锈钢， 硬质阳极化 铝或者塑料。
10、 根据权利要求 1所述的双侧制冷型医疗美容用半导体激光器系统， 其特征在于： 所述的半导体激光器是将激光器巴条芯片封装在芯片热沉上， 芯片热沉为微通道热沉、 宏通道热沉或者金属块； 激光器芯片为单发光点芯 片或者多发光点芯片。
11、 根据权利要求 1所述的双侧制冷型医疗美容用半导体激光器系统， 其特征在于： 在半导体激光器前端设置有用以进行快轴准直或快慢轴同时准 直的准直镜。
12、如权利要求 11所述的双侧制冷型医疗美容用半导体激光器系统，其 特征在于： 所述的光波导替换为垂直于慢轴方向设置的一对内侧镀有高反膜 的挡光板。
13、 根据权利要求 12所述的双侧制冷型医疗美容用半导体激光器系统， 其特征在于： 挡光板的材料为铜镀金或铜镀银。
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