KR20010088451A - Optical system for depilation laser irradiation hole - Google Patents

Abstract

PURPOSE: To provide a laser depilating device for performing quick are sure depilating processing expected by a person who wants depilation. CONSTITUTION: This optical system of a depilating laser irradiation port is combined with a semiconductor laser generating element to realize the quick and sure depilating processing expected by the depilation wisher.

Description

Optical system of hair loss laser irradiation hole {OPTICAL SYSTEM FOR DEPILATION LASER IRRADIATION HOLE}

The present invention relates to a laser hair removal apparatus that efficiently performs a hair loss treatment.

Conventionally, in the laser hair loss apparatus generally used, the hair root inside the skin is damaged and removed by high thermal energy of the laser light.

However, the laser light output of the laser depilation apparatus that is generally used is weak and, moreover, the area where the laser light is irradiated once is usually small. Depending on the place where hair loss is desired, it takes time to complete the hair loss treatment. . In addition, even at the point where the hair loss treatment has been completed, new hairs are often formed later. This is because the laser light output is weak and the hair roots are not destroyed.

Therefore, if the following points can be solved, the laser hair removal apparatus with a significantly improved performance can be provided to the market. In order to improve the operability of the laser irradiation part (hereinafter referred to as a laser irradiation part) connected by a cable in the hair loss laser main apparatus, it is necessary to reduce the size and weight so that it can be held freely with one hand and can move freely. Further, in order to minimize the loss of the output laser light, for example, the hair loss laser main unit outputs the laser and does not guide the laser irradiation part with the optical fiber, but emits light and irradiates the laser irradiation part, It is effective to improve the laser light transmittance as part of the optical system.

BRIEF DESCRIPTION OF THE DRAWINGS The schematic diagram of the optical system of the hair loss laser irradiation apparatus which concerns on this invention;

FIG. 2 is a schematic diagram of an optical system of a hair loss laser irradiation tool according to the present invention, the surface of which is an elliptical aspherical lens;

3 is a cross-sectional view taken along line III-III of FIG. 2;

4 is a cross-sectional view taken along the line IV-IV of FIG. 2;

5 is a schematic diagram of an optical system of a hair loss laser irradiation tool according to the present invention, wherein a surface thereof is a parabolic aspherical lens;

FIG. 6 is a cross-sectional view taken along line VI-VI in FIG. 5; FIG.

FIG. 7 is a sectional view taken along line VIII-VIII in FIG. 5; FIG.

(Explanation of symbols on the main parts of drawing

One; Optical system 2 of the hair loss laser irradiation port; Semiconductor laser

3; Reflector 4; Aspherical lens

In the present invention, it is made to solve the above-mentioned irrationality. Fast and sure hair loss, to achieve this, first select the laser.

There are several theories of why hair loss is caused by laser light. That is, the laser light reacts to the melanin around the hair roots. There is a hair root inside the human skin, and a melanin layer forms a thick layer to surround the periphery. In order to destroy the hair root, the heat energy of the laser light must be sufficiently absorbed by the thick layer of melanin pigment around the hair root.

In addition, when the absorption rate of the thermal energy becomes excessively high, the irradiated spot burns.

A laser beam having a wavelength in the near infrared region (for example, 750 nm to 900 nm) suitable for this can be generated, and a semiconductor laser which is advantageous in miniaturization and light weight is adopted. In addition, the optical system of the laser irradiation port employs a new concept aspherical lens and a cylindrical mirror to reduce rare light loss.

(Embodiment of invention)

A semiconductor laser, a reflector whose cylindrical surface is mirror-like, an aspherical lens, and the above are the basic configurations of the optical system of the hair loss laser irradiation tool of the present invention. Furthermore, in one hand, the laser irradiation section is combined with a compact and lightweight structure and shape in which the hair loss treatment is performed, and in combination, a cable is connected to the main part of the laser hair removal apparatus.

(Example)

In making the optical system of the laser hair removal apparatus small and inexpensive, the lens adopts a single lens of the convex portion near the focal length f = 25 mm. The semiconductor laser 2 employed in the present invention comprises hundreds of laser elements, each of which emits light at an angle of about 40 ° in the vertical direction and about 20 ° in the horizontal direction, and emits elliptical light. If this is adapted to the optical system, which is the next process, for example, a standard convex lens of f = 25 mm has a diameter smaller than 25 mm, so that light of 40 ° in the vertical direction is lost without being incident to the lens. Therefore, an aspherical lens 4 was used, which became a lens having a diameter of 40 mm with f = 25 mm. Nevertheless, the surrounding light leaves the lens and the loss of the laser light becomes large. At this time, although there is no reflector 3 described below, the transmittance of the laser light is 70% or less.

Therefore, in order to study that the laser light does not escape around the aspherical lens 4, a cylindrical reflector 3 is devised, the peripheral lens light is collected in the aspherical lens 4, and the laser light transmittance is realized at 90% or more. It was.

1 is a schematic view of a laser beam irradiation port of a laser hair removal apparatus, and a semiconductor reflector 2 is combined with a cylindrical reflector 3 and an aspherical lens 4. The present invention is made for the purpose of reducing the number of optical systems used as shown in Fig. 1 and reducing the loss of output laser light, and miniaturization of the laser irradiation section and the irradiation port.

In the embodiment shown in Fig. 1, the area where the laser light can be irradiated to the skin is 10 mm square and the irradiation energy is 10-50 J / cm 2, and this performance is superior in cost performance compared to the currently known technology. .

FIG. 2 is a schematic diagram of a laser light irradiation port of a laser hair removal apparatus, the surface of which is an aspherical lens composed of an ellipse, and FIG. 5 is a schematic view of an aspherical lens composed of a parabola.

As described above, according to the present invention, the loss of the laser light emitted from the semiconductor laser generating element can be reduced, and the desired hair loss can be irradiated more effectively. Thereby, the laser hair removal apparatus which can perform the fast and reliable hair loss treatment anticipated by the hair loss candidate can be provided.

Claims (7)

A hair loss device for performing hair loss using laser light, wherein the semiconductor laser generating the laser light includes a cylindrical reflector and an aspherical lens, and has a laser light transmittance of 90% or more. A hair loss device for performing hair loss using a laser beam, the hair loss device comprising a hair loss laser irradiation port having a cylindrical reflector and an aspherical lens on a semiconductor laser generating laser light. The hair loss device according to claim 2, wherein the surface is an aspherical lens made of an ellipse. The hair loss device according to claim 2, wherein the surface is an aspherical lens made of a parabola. The hair loss device according to any one of claims 2 to 4, wherein the laser light transmittance is 90% or more. The hair loss apparatus according to any one of claims 2 to 5, wherein the wavelength of the laser light is 750 nm to 900 nm. The hair loss device according to any one of claims 2 to 6, wherein the semiconductor laser is composed of hundreds of laser elements.