JP2006116088A - Laser treatment apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To improve the efficiency of the treatment by a laser treatment apparatus with a simple structure. <P>SOLUTION: In the laser treatment apparatus 1, a convex lens 24 temporarily condenses laser beams radiated from a laser diode 20, and emits the laser beams from a laser beam emission port 23 while gradually expanding the beam diameter from the focal position of the condenser lens. The distance between a skin surface 42 on which hair is implanted and the convex lens 24 is set at a prescribed distance by contacts 25 and 26 connected to a touch sensor circuit 28, and the laser beams are emitted from the convex lens 24 to the skin surface 42 at the set interval. As a result, a laser beam application spot 43 with the beam diameter expanded to a prescribed size can be formed on the skin surface 42 on which hair is implanted, and therefore, the laser beams with an appropriate quantity of energy can be applied over a wide range on the skin surface 42 on which hair is implanted and the efficiency of the hair growing treatment can be improved. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a laser treatment apparatus capable of performing treatments such as hair growth, hair removal, skin beautification, and slimming by irradiating a skin surface with laser light.

  In general, laser light has a higher energy density than other light, so that when irradiated to a living tissue, the temperature of the irradiated portion can be raised relatively easily. As a result, the laser beam is a photothermal reaction that intentionally causes protein modification at a desired site in living tissue, or a so-called non-thermal reaction (not exceeding 40 ° C.) for promoting metabolic function. It is possible to induce photochemical reaction, photomagnetic reaction, biological reaction such as ionization reaction) that occurs at a relatively low temperature.

  The laser treatment apparatus realizes treatments such as hair growth, hair removal, skin beautification, slimming, etc. by irradiating the human skin surface with laser light by setting laser power, irradiation time, and the like (for example, Patent Document 1). reference).

  That is, the hair growth treatment is performed by irradiating the scalp surface with laser light having a relatively low energy density. As a result, blood circulation in the scalp is promoted to open pores, and sebum and dirt clogged in the pores are washed to obtain a hair growth effect. On the other hand, hair removal treatment is realized by irradiating hair roots such as body hair with laser light having a relatively high energy density. In this case, protein growth of hair matrix cells such as body hair is promoted, so that hair growth is suppressed and a hair removal effect is obtained.

  In addition, when performing beautiful skin treatment, laser light is irradiated so that the melanin scattered in the epidermis and dermis of the skin is heated to a relatively high temperature, causing thermal denaturation by photothermal action, aza, spots, Remove buckwheat etc. Furthermore, when performing slimming treatments, a laser beam with a relatively low energy density is supplied to a specific acupuncture point closely related to the sympathetic nerve, and the acupuncture point is stimulated by non-thermal effects such as photochemical reaction, photomagnetic reaction, ionization reaction, etc. It promotes blood circulation, thereby activating cellular tissues and increasing metabolic function to burn excess fat.

Here, in the current laser treatment apparatus that can obtain the effects as described above, a single-function apparatus designed as a dedicated machine for each purpose such as hair removal, hair growth, and slimming, and the power of laser light Various types of devices have been developed, such as multi-function devices that can perform various treatments such as hair removal, hair growth, skin beautification, and slimming with a single device by incorporating fine setting functions such as irradiation time.
JP 2001-252363 A

  By the way, such various laser treatment apparatuses have a common problem. That is, a certain period of time is required from the start of treatment until the effect is actually obtained, although there is a difference depending on the type of treatment. That is, on the user side, it is necessary to continuously perform a treatment that takes several minutes or several hours a day for a certain period until the treatment effect is obtained. For this reason, the laser treatment apparatus is required to shorten the treatment time, and there is an increasing demand for the development of a new apparatus that realizes this with a simple configuration.

  The present invention has been made to solve the above-described problems, and provides a laser treatment apparatus capable of improving the treatment efficiency with a simple apparatus configuration.

  In order to achieve the above object, a laser treatment apparatus according to the present invention includes a light source that emits laser light and a beam diameter of the laser light emitted from the light source so that predetermined energy is applied to a skin surface to be treated. And laser light irradiation means for irradiating an amount of laser light.

  According to the laser treatment apparatus of the present invention, the diameter of the laser beam emitted from the light source is expanded and the laser beam is irradiated over a wide range so that the laser beam having an appropriate energy amount is supplied to the treatment target site. Therefore, it is possible to improve the efficiency of treatment with a simple device configuration. Further, since the laser treatment apparatus of the present invention substantially diffuses the power of the laser light emitted from the light source and supplies it to the treatment site, the apparatus of the present invention raises the skin surface to a relatively low temperature. Therefore, it is suitable as a treatment device for performing hair growth or slimming that is necessary.

Further, when the treatment is actually performed using the laser treatment apparatus of the present invention, the energy amount per unit area of the laser beam irradiated with the beam diameter enlarged to the skin surface to be treated is 5 mW / cm. It is desirable to be in the range of ^{2 to} 50 W / cm ² . Here, the energy amount of the laser light per unit area is a value obtained by assuming the laser beam output 20mW~5W emitted, and the irradiation area 0.1cm ² ~4.0cm ² laser beam from the light source.
In particular, when performing hair growth treatment, it is desirable that the amount of energy per unit area of the laser light applied to the skin surface be in the range of 5 mW / cm ^{2 to} 10 W / cm ² . Amount of energy in this case is the output 20MW～2W, and the irradiation area 0.1cm ² ~4.0cm ² values assuming a of the light source.

  In the laser treatment apparatus according to the present invention, the laser light irradiation means includes at least an objective lens disposed in an optical path of the laser light, and is provided so as to protrude from the vicinity of the objective lens in the laser light irradiation direction. A contact that regulates a beam diameter of a laser beam applied to the skin surface via the objective lens by contacting a part of the skin surface to be treated; and the contact and the skin surface. And means for detecting contact and controlling emission / non-radiation of laser light from the light source.

  The configuration for enlarging the beam diameter of the laser light is realized by applying a general convex lens or concave lens to the objective lens. When the convex lens is applied, the laser beam is once condensed and the beam diameter is reduced, but the beam diameter is gradually increased from the position past the focal point of the lens. Of course, when a concave lens is applied, the beam diameter gradually expands after the laser beam passes through the lens.

  Here, through the contact, by setting the interval between the skin surface to be treated and the objective lens to a predetermined separation distance, the laser light is emitted from the objective lens to the skin surface at this separation distance, Laser light whose beam diameter is expanded to a predetermined spot size can be irradiated to the skin surface to be treated. Thereby, it becomes possible to irradiate a laser beam with an appropriate energy amount over a wide range, and the treatment processing efficiency can be improved. In addition, this structure which controls the radiation | emission / non-radiation of a laser beam using the said contactor functions also as a safety device which prevents that the laser beam is accidentally irradiated to the site | part which is not intended.

  Furthermore, the laser treatment apparatus of the present invention has a device configuration including a plurality of types of contacts having different lengths as an attachment, a mechanism for adjusting the protruding length of the contacts, or an objective lens that moves forward and backward with respect to the laser light irradiation direction. It is possible to adjust the spot size of the laser light that is enlarged and applied to the skin surface to be treated. Therefore, according to the present invention, it is possible to irradiate laser light with an appropriate amount of energy to be supplied to the skin surface according to the type of treatment such as hair growth, hair removal, skin beautification, and slimming. Can be implemented. That is, the present invention is useful when configuring a multifunctional treatment apparatus that realizes various treatments with a single apparatus.

  The laser treatment apparatus of the present invention may include a collimator as a laser beam irradiation unit. In this invention, the spot size of the laser light that is enlarged and applied to the skin surface can be fixed to a constant size regardless of the separation distance between the objective lens and the skin surface. Thereby, the laser beam set to an appropriate energy amount can be efficiently supplied to the skin surface to be treated.

  As described above, according to the present invention, it is possible to provide a laser treatment apparatus capable of improving treatment efficiency with a simple apparatus configuration.

The best mode for carrying out the present invention will be described below with reference to the drawings.
1 is a perspective view showing a laser treatment apparatus according to an embodiment of the present invention, FIG. 2 is a front view showing a laser supply apparatus provided in the laser treatment apparatus, and FIG. 3 is a side view of the laser supply apparatus of FIG. FIG. 4 is a functional block diagram showing a control system of the laser treatment apparatus.

  As shown in FIG. 1, the laser treatment apparatus 1 is for a user to perform hair growth treatment by himself / herself. The laser treatment apparatus 1 includes a controller / apparatus storage box (hereinafter referred to as “control box”) 2 and the control. The laser supply device 5 is connected to the box 2 through the connection cable 3.

  On the front surface of the control box 2, there are provided a display panel 6 for visually displaying guidance information for operating the apparatus and the operating state of the apparatus, a socket 7 for attaching a connection terminal (plug) of the connection cable 3, and the like. It has been. Further, the control box 2 includes a power source for supplying power to the laser supply device 5 and a control circuit for controlling irradiation of the laser light from the laser supply device 5.

  Further, on the front face of the control box 2, a power switch 8 for turning on / off the power of the apparatus body, an LED lamp 9 for indicating the power on / off state, a setting switch 10 for performing various settings, An LED lamp 11 that visually indicates each setting state is provided.

  As shown in FIGS. 2 and 3, the laser supply device 5 is a handy type device in which a user performs a hair growth treatment with his / her hand. That is, the laser supply device 5 includes a case 12 that forms an outer shell of the device, a control chip 16 that is mounted inside the case 12 via a substrate 15, a setting switch 19 that is provided on the entire surface of the case 12, A laser diode 20 as a laser light source that emits laser light, a heat sink 21 that removes heat from the laser diode 20, a cooling fan 17 that cools the heat sink 21, and a laser beam that is disposed in the optical path of the laser light from the laser light irradiation port 23 It mainly comprises a convex lens 24 as an objective lens that emits light to the outside.

  Further, the laser supply device 5 is provided with a pair of contacts 25 and 26 projecting as a touch sensor with the skin surface so as to sandwich the laser beam irradiation port 23. That is, the laser supply device 5 is configured to irradiate the laser beam with the contacts 25 and 26 both in contact with the skin surface. Thereby, there is no possibility that the laser beam is accidentally irradiated to the living body part which is not intended by the user, and the safety of the apparatus is improved.

  As shown in FIG. 2, the setting switch 19 turns on / off the power supply of the laser treatment apparatus main body on the laser supply apparatus 5 side, and notifies the user of this by turning on / off the LED lamp 18. The setting switch 19 has substantially the same function as the setting switch 10 on the main body side, and is used to set the on-time (irradiation time and irradiation cycle) of laser light that is intermittently (pulsed) irradiated. It is. That is, each time the setting switch 19 is pressed, the mode is switched in the order of power-on, on-time switching, and power-off. At this time, the LED lamp 22 is switched in the order of green lighting, green flashing, orange lighting, orange flashing, red lighting, red flashing corresponding to the setting levels 1 to 6. Finally, when the setting switch 19 is kept pressed for, for example, 1.5 seconds or longer, the power is turned off.

  Here, in the laser treatment apparatus 1 which is a dedicated machine as a hair growth apparatus, the setting levels 1 to 6 correspond to the remaining hair state and the on-time of the laser beam as described below. That is, the setting levels 1 to 6 are, in order, “hair thinness is not so noticeable: (laser irradiation time) 0.1 second × 3 (cycle)”, “slightly thin: 0.1 second × 4”, “ “Thin: 0.3 seconds × 3”, “pretty thin: 0.5 seconds × 3”, “very thin: 0.7 seconds × 3”, “almost no: 1 second × 3” Yes.

  The heat sink 21 diffuses heat generated during the operation of the laser diode 20 by heat conduction, and suppresses deterioration in performance. For this reason, the heat sink 21 is cast from aluminum having a high thermal conductivity or an alloy thereof, and has a plurality of through holes to increase the surface area, thereby enhancing the heat dissipation effect.

  The laser diode 20 is excited by applying a current directly to a PN junction diode using a compound semiconductor such as GaAs (gallium arsenide) to obtain laser oscillation. As the laser diode 20, for example, a semiconductor element capable of emitting laser light having a wavelength of 700 to 900 nm and an optical output of 20 mW to 5 W is applied.

  Such laser light has the effect of inducing photoelectric reaction, photomagnetic reaction, photodynamic reaction, photochemical reaction, photoimmune reaction, photoenzyme reaction, etc., and promotes the metabolism of living tissue by photobiological activation. Therefore, it has excellent reachability to the deep part of the skin.

Next, the optical control system of the laser treatment apparatus 1 will be described.
That is, as shown in FIG. 4, the optical control system 40 of the laser treatment apparatus 1 includes a touch sensor circuit 28 that detects contact of the contacts 25 and 26 with the skin surface, and a memory in which an irradiation pattern of laser light is stored. 29, a laser driving circuit 30 that drives the laser diode 20 to emit laser light, a CPU 31 that controls these circuits centrally, and an interface 32 that connects the touch sensor circuit 28, the laser driving circuit 30, and the CPU 31. And so on.

  As shown in FIGS. 4 and 5, the touch sensor circuit 28 generates a weak alternating voltage generated when the contacts 25 and 26 come into contact with the skin through a band filter 33, a rectifier circuit 34, and an amplifier 35, respectively. This is converted to a DC voltage, and after this is waveform-shaped, level-adjusted, and offset-adjusted, it is input to the CPU 31 via the A / D converter 36 and the interface 32. In addition to the contact type, the touch sensor circuit 28 may be a sensor that detects a change in impedance such as capacitance or resistance, or a sensor that detects a pressure change using a piezoelectric element.

  The touch sensor circuit 28 is configured as described above, reads the voltage value of the contacts 25 and 26, determines whether or not a predetermined AC voltage is generated, and determines a predetermined AC voltage in both the contacts 25 and 26. When the voltage is generated, an ON signal is output to the laser drive circuit 30 of the laser diode 20. Such a touch sensor circuit 28 is realized by, for example, the control chip 16 built in the laser supply device 5.

  The memory 29 stores various programs including setting values of the irradiation timing of laser light that is intermittently emitted from the laser diode 20 for a predetermined irradiation time. The laser drive circuit 30 supplies a predetermined drive current voltage to the laser diode 20 under the control of the CPU 31 and causes the laser diode 20 to emit laser light.

Next, a laser irradiation mechanism provided in the laser treatment apparatus 1 according to the present embodiment will be described with reference to FIG.
The laser irradiation mechanism 41 as the laser beam irradiation means is realized by the optical control system 40, the laser diode 20, the convex lens 24, and the contacts 25 and 26 described above. The laser beam emitted from the laser diode 20 is provided. A laser beam having a predetermined energy amount is irradiated onto the skin surface of a hair growth target (treatment) by expanding the beam diameter of the hair.

  That is, the contacts 25 and 26 used by contacting a part of the skin surface 42 of the hair growth target (head hair part) from the vicinity of the convex lens 24 in the irradiation direction of the laser light (the left side of the convex lens 24 in FIG. 3). It is provided so that it protrudes, and the diameter (irradiation spot size) of the laser beam irradiated to the skin surface 42 via the convex lens 24 is regulated by bringing the tip portion into contact with a part of the skin surface 42. (Determine). In addition, the touch sensor circuit 28 and the laser driving circuit 30 that constitute the optical control system 40 detect contact between the contacts 25 and 26 and the skin surface 42 to emit / not emit laser light from the laser diode 20. I have control.

  That is, the convex lens 24 condenses the laser beam once and gradually enlarges the beam diameter from the position past the focal point of the lens. Further, the contacts 25 and 26 set the gap between the skin surface 42 to be raised and the convex lens 24 to a predetermined separation distance, and emit laser light from the convex lens 24 to the skin surface 42 at this separation distance. Thus, the irradiation spot 43 with the beam diameter enlarged to a predetermined size can be formed on the skin surface 42 of the hair growth target. As a result, laser light of an appropriate energy amount is irradiated over a wide range on the skin surface 42 of the hair growth target, and the treatment efficiency of the hair growth treatment is improved.

Here, the energy amount of the laser beam is expressed by the following formula:
Energy amount (mW / cm ² ) = output (mW) / irradiation spot area (cm ² )
Defined as
In the case of performing the hair growth treatment, the beam diameter of the laser light emitted from the laser diode 20 is enlarged, and the amount of energy per unit area of the laser light to be irradiated on the skin surface 42 of the hair growth target is 5 mW / cm. it is preferably in the range of ^{2 ~10W} / cm ^2.

Further, the energy density of the laser beam obtained by multiplying the amount of energy by the laser irradiation time is expressed by the following formula:
Energy density (J / cm ² ) = output (W) × irradiation time (sec) / irradiation spot area (cm ² )
Defined as
When the hair growth treatment described above is performed, the energy density of the laser beam to be supplied to the skin surface 42 to be grown is preferably in the range of 5 mJ / cm ^{2 to} 10 J / cm ² .
Here, the energy density of the laser beam is such that the output of the laser beam emitted from the laser diode 20 is 20 mW to 2 W, the irradiation time of the laser beam on the skin surface is 0.1 sec to 3 sec, and the irradiation area of the laser beam is 0.1 cm. is the assumed value of the ^{2 ~4.0cm 2.}

  In addition, as a structure of the laser treatment apparatus 1 of this embodiment, you may make it provide several types of contactors from which length differs as an attachment. For example, as shown in FIG. 7, an irradiation spot 47 having a further enlarged beam diameter can be formed on the skin surface 42 by attaching contacts 45 and 46 having a longer overall length than the contacts 25 and 26. .

  That is, by providing a plurality of types of contacts having different lengths as attachments, it is possible to adjust the spot size of the laser light that is enlarged and applied to the skin surface 42. As a result, for example, by preparing in advance a contact having a length corresponding to the type of treatment, such as for hair growth, hair removal, skin beautification, and slimming, appropriate energy to be supplied to the skin surface 42 The amount of laser light can be irradiated, and treatment can be performed under the optimum conditions according to the application. Therefore, such an attachment-type contact is useful when configuring a multifunctional laser treatment apparatus that implements various treatments with a single apparatus.

  Of course, as a lens for enlarging the beam diameter of the laser beam, a concave lens 49 may be applied as shown in FIG. Further, as shown in FIG. 9, a collimator 51 may be configured by combining a concave lens 49 and a convex lens 50, and this may be applied to a laser irradiation mechanism. In this case, the size of the irradiation spot 43 formed by enlarging the laser beam on the skin surface 42 is fixed to a constant size regardless of the separation distance between the convex lens 50 and the skin surface 42. Thereby, the laser beam set to an appropriate energy amount can be efficiently supplied to the skin surface 42 of the hair growth target without using the contact as described above.

  As described above, according to the laser treatment apparatus 1 of the present embodiment, the beam diameter of the laser light emitted from the light source is enlarged so that the laser light having an appropriate energy amount is supplied to the target site for hair growth. Since the laser beam is irradiated over a wide range, the treatment efficiency of the hair growth treatment can be improved with a simple apparatus configuration.

  The present invention has been specifically described above with reference to each embodiment. However, the present invention is not limited to the above embodiment, and various modifications can be made without departing from the scope of the present invention. The laser treatment apparatus of the above-described embodiment is a hair growth apparatus. Of course, the laser treatment apparatus of the present invention is also applied as an apparatus for beautifying skin, an apparatus for slimming by stimulation of acupoints, or a hair removal apparatus. Is possible.

  In the laser treatment apparatus 1 of the above embodiment, the optical control system 40 is configured to intermittently (pulse) irradiate laser light. However, by appropriately selecting a laser diode or the like, the laser light is continuously irradiated. The optical control system may be configured as described above.

  Furthermore, a mechanism for adjusting the protrusion length of the contactor and a mechanism for moving the objective lens such as the convex lens 24 and the concave lens 49 forward and backward in the laser light irradiation direction may be mounted on the laser supply device 5. In this case, it is possible to easily change the spot size of the laser light that is enlarged and irradiated onto the skin surface, and to adjust the energy amount of the laser light irradiation spot.

  Further, as shown in FIGS. 10 to 12, one of laser light irradiation means for expanding the beam diameter of the laser light emitted from the laser diode 20 and irradiating the skin surface to be treated with a predetermined amount of laser light. A diffusion cap 71 may be applied as a component, and thereby the laser irradiation mechanism 70 may be configured. Here, FIG. 10 is a perspective view showing the diffusion cap 71, FIG. 11 is a bottom view of the diffusion cap 71 as viewed from the side where the diffusion cap 71 is attached to the head part 64 of the laser treatment device 65, and FIG. It is sectional drawing which shows the state by which the diffusion cap 71 was mounted | worn with the head part 64 of this.

  Specifically, as shown in FIGS. 10 to 12, the diffusion cap 71 is formed in a substantially conical shape in which the distal end portion and the proximal end portion are opened and the interior is hollow. The opening at the tip functions as a laser beam irradiation port 52. For example, a pair of claw portions 56 and 57 are formed at the edge of the opening of the base end portion so as to protrude to the base end side. The claw portions 56 and 57 are configured to engage with claw engagement portions 67 and 68 provided on the proximal end side of the head portion 64, and the claw portions 56 and 57 and the claw engagement portions 67 and 68 In this engaged state, as shown in FIG. 12, the diffusion cap 71 is attached so as to cover the head portion 64. For example, the main body portion 55 of the diffusion cap 71 is made of light transmissive (translucent light) such as acrylic so that the user can easily grasp the display color of the LED that visually indicates the operation mode of the laser treatment device 65, for example. ).

  In the laser treatment device 65, when the diffusion cap 71 is not attached, the three conductive contacts 59 and 60 (one of which is not shown) projecting to the tip side of the head portion 64 are disposed on the skin surface. The laser diode 20 is driven when it comes into contact with the laser beam, and the front skin surface is irradiated with laser light via the convex lens 62. Here, conductive contact extension portions 53a and 53b projecting from the distal end side of the diffusion cap 71 toward the proximal end side are provided on the peripheral edge portion of the laser light irradiation port 52 inside the diffusion cap 71. 53c is provided. Further, each end of the contact extension portions 53a, 53b, and 53c surrounds the periphery of the laser light irradiation port 52 and is electrically connected to the conductive annular contact portion 54 provided at the most distal end portion of the diffusion cap 71. Connected. In addition, the three contacts 59 and 60 provided at the tip of the head portion 64 are configured to be extendable and contracted, and are constantly urged by the spring force or the like in the protruding direction. With this urging force, in the mounted state of the diffusion cap 71, the connection reliability between the three contacts 59, 60 at the tip of the head portion 64 and the ends of the contact extension portions 53a, 53b, 53c is improved. Yes. With such a configuration, when the annular contact portion 54 contacts the skin surface with the diffusion cap 71 attached, the skin surface 61 is irradiated with laser light.

  That is, in the state where the diffusion cap 71 is attached to the head portion 64 of the laser treatment device 65, as shown in FIG. 12, the lengths of the contacts 59, 60 are substantially reduced by the contact extension portions 53a, 53b, 53c. As a result, when the annular contact portion 54 comes into contact with the skin surface 61, an irradiation spot 52 with an enlarged beam diameter (laser light is diffused) is formed on the skin surface 61. It will be. Accordingly, by selecting such attachment / non-attachment of the diffusion cap 71 (expansion / reduction of the irradiation spot 52), the adjustment of the energy density of the laser beam and the treatment area of the treatment that can be applied to the skin surface are achieved. Adjustment can be performed easily.

  Further, the annular contact portion 54 of the diffusion cap 71 may be improved, and an insulating portion may be interposed in a direction around the peripheral portion of the laser light irradiation port 52 to divide the conductive portion into three. . That is, even when a diffusion cap is applied, the three-point type can be obtained by dividing the conductive portion at three locations corresponding to the three contacts 59 and 60 (one is not shown) on the laser treatment device 65 side. A touch sensor can be realized.

It is a figure showing roughly the laser treatment device concerning the embodiment of the present invention. It is a front view which shows the laser supply apparatus with which the laser treatment apparatus of FIG. 1 is provided. It is sectional drawing which looked at the laser supply apparatus of FIG. 2 from the side surface. It is a functional block diagram which shows the optical control system of the laser treatment apparatus of FIG. FIG. 5 is a functional block diagram illustrating a touch sensor circuit of the optical control system in FIG. 4. It is a figure which shows the laser irradiation mechanism with which the laser supply apparatus of FIG. 2 is provided in detail. It is a figure which shows in detail the laser irradiation mechanism in which the structure differs from the mechanism of FIG. It is a figure which shows in detail the laser irradiation mechanism in which the structure differs from the mechanism of FIG.6 and FIG.7. It is a figure which shows in detail the laser irradiation mechanism in which the structure differs from the mechanism of FIG. 6 thru | or FIG. FIG. 10 is a perspective view showing a diffusion cap that is a component for constituting a laser irradiation mechanism having a structure different from that of the mechanism of FIGS. 6 to 9. It is the bottom view which looked at the diffusion cap of FIG. 10 from the side which mounts | wears with the head part of a laser treatment apparatus. It is sectional drawing which shows the state with which the diffusion cap of FIG. 10 was mounted | worn with the head part of the laser treatment apparatus.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1,65 ... Laser treatment apparatus, 2 ... Controller and instrument accommodation box (control box), 5 ... Laser supply apparatus, 10, 19 ... Setting switch, 20 ... Laser diode, 23, 52 ... Laser beam irradiation opening, 24, 50 , 62 ... convex lens, 25, 26, 59, 60 ... contact, 28 ... touch sensor circuit, 30 ... laser drive circuit, 31 ... CPU, 40 ... optical control system, 41, 50 ... laser irradiation mechanism, 42, 61 ... Skin surface, 43, 47, 58 ... irradiation spot, 49 ... concave lens, 51 ... collimator, 53a, 53b, 53c ... contact extension.

Claims (7)

A light source that emits laser light;
A laser treatment apparatus, comprising: laser light irradiation means for expanding a beam diameter of the laser light emitted from the light source and irradiating the skin surface to be treated with a predetermined amount of laser light. 2. The amount of energy per unit area of the laser light irradiated on the skin surface to be treated with an enlarged beam diameter is in the range of 5 mW / cm ^{2 to} 50 W / cm ^2. The described laser treatment device. The laser beam irradiation means includes at least an objective lens disposed in an optical path of the laser beam;
It is provided so as to protrude from the vicinity of the objective lens in the irradiation direction of the laser beam, and the laser beam irradiated to the skin surface through the objective lens by contacting a part of the skin surface to be treated. A contactor that regulates the beam diameter;
The laser treatment apparatus according to claim 1, further comprising: means for detecting contact between the contact and the skin surface to control radiation / non-radiation of laser light from the light source.   The laser treatment apparatus according to claim 3, comprising a plurality of types of contacts having different lengths as attachments.   The laser treatment apparatus according to claim 3, further comprising a mechanism for adjusting a protruding length of the contact.   The laser treatment apparatus according to any one of claims 3 to 5, further comprising a mechanism for moving the objective lens forward and backward with respect to an irradiation direction of the laser light.   The laser treatment apparatus according to any one of claims 1 to 6, wherein the laser light irradiation means includes a collimator.

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