System and method of depilation

FIELD: medicine.

SUBSTANCE: invention relates to medical equipment, namely to means for depilation. System of depilation contains device for detection of hair on skin section, which is to be processed, functionally connected with it device for depilation, which includes light source for light impulse formation, light-conducting device for directing light impulse to the target on hairs, control unit, determining target location and activating light source for a long period of time, on which hair-detecting device is able to detect hairs. In addition system contains preventing devices, connected with control unit and made with possibility of preventing re-direction of the following light impulse on the hairs by, at least, part of hair-detecting device or depilation device during the period of time, when preventive measures are taken, during which hair-detecting device is able to detect hairs and starting after the moment, when light impulse was directed into target location.

EFFECT: application of the invention makes it possible to reduce power consumption and possibility of skin injury due to prevention of aiming cutting light ray at one and the same hair more than once.

15 cl, 11 dwg

 

The technical FIELD of the INVENTION

The invention relates to a system and method for hair removal. The system, for example, can shave, trim or permanently remove hair from the human or animal. System for hair removal may include, for example, Assembly of the detection system hair and breusegem device based on the laser.

The prior art INVENTIONS

In a known system for hair removal hair are detected, for example, an optical detection system. As only one hair found on the hair focuses the light beam so as to cut off or remove by destroying hair roots. An example of a method of cutting hair using a laser light source is known as optical degradation caused by laser (Laser Induced Optical Breakdown, LIOB).

In the publication WO-00/62700 presents the system containing the detecting device of hair and a device for hair removal, which is functionally connected with the detecting device of hair. The detecting device of hair contains a display device having a first image sensor. A display device configured to obtain an image of the skin area that should be processed. The control unit is arranged to recognize in this image of the hair on the skin. The control unit is functionally related the device for hair removal, so in order to control its operation. The system includes a laser source, and an adjustable device for beam control. The image sensor includes a sensor based on charge-coupled device (CCD) or sensor-based complementary structure of the metal-oxide-semiconductor (CMOS).

In the publication WO-2007/013008-A1 of the same applicant presents improved determination of the position and orientation of the hair, and also the speed of execution. The system is able to determine the position of the hair on the skin in three dimensions. The first image sensor is used to determine the approximate position and/or orientation of the hair. The second image sensor is used to more accurately determine the position and/or orientation of the hair in three dimensions. Using data from the first sensor, you can limit the time needed for a more thorough, but slow scan performed by the second image sensor, provided that the latter is only required to form the image of the selected portion of the skin area, which image is formed by the first sensor. The selection may be performed by a control unit, which may have software and/or hardware for image processing.

The first image sensor configured to generate essentially modernage image. The image sensors capable of providing such information is relatively simple and have high performance. In particular, the first image sensor contains a 2D optical image sensor, preferably a device with a CCD, a CMOS device or matrix in the focal plane, which is composed of photodetectors.

The light source may include, for example, light emitting diodes (LED) or laser light source. The light emitting diode is very compact and has low power consumption, and provides radiation in a relatively narrow range of wavelengths. This makes it easy to filter, or to control the radiation in other aspects, where it is required. In addition, light-emitting diodes are easy to control and have a relatively long service life. The laser light source may have a high power density and implement essentially monochromatic radiation, which is very well managed with special mirrors, filters, etc. Thus, lasers are also suitable for the purposes of scanning and visualization. The resulting power density is high enough to cut or hair removal of a person or animal.

The system described above, capable of forming light beam for hair removal. In one embodiment, is sushestvennee light beam can be aimed at the root of the hair follicle to destroy the root. After this the hair falls out skin. In this embodiment, the system includes a device for hair removal. In another embodiment, the light beam is directed to the target location on the visible part of the hair, i.e. on the part of the hair that is protruding from the skin. Light beam burned through the hair at the target location. In the latter embodiment, the system includes a device for shaving and grooming.

Although devices for hair removal, described above, provide a number of advantages compared with the prior art, the light beam can be aimed at one and the same hair more than once. Pointing a light beam at the same hair possible, because the hair remains in the skin or on the skin after the light beam was focused on the hair or on the root of the hair. Detection of the hair can be carried out twice or more times. Pointing a light beam at one and the same hair more than once is a disadvantage from the viewpoint of increasing the consumption of power and possible damage to the skin or even cause injury.

The only hair can be detected, for example, twice or more times due to the ratio between the diameter of the hair and resolution system. Hair, having a diameter, for example, 100 μm, can be detected, at least, even the re times, if the system has a resolution of 20 μm. If the cutting process is induced in the center of the hair, the same hair can be found again later. For example, after cutting hair there is a possibility that the hair does not immediately fall out with skin or leather. Later, this hair can be detected and it can be re-executed move.

OBJECTIVE AND summary of the INVENTION

The present invention is to prevent the targeting of cutting a light beam to the same hair more than once.

For this purpose, the present invention provides a system for hair removal, which contains:

- device detection of hair to detect the hair on the skin area that should be processed;

device for hair removal, functionally associated with the device discovery hair and includes a light source to generate light pulse and the light guide means for directing the light pulse from the light source to a destination on the hair; and

a control unit associated with the device discovery hair and a device for hair removal, so as to control their operation, and the control unit determines the location of targets and activates the light source to generate light pulse during the period in which devices the discovery of hair are able to detect hair,

different

safety means associated with the control unit and configured to prevent during the period safety measures, during which the detecting device of hair are able to detect the hair and begins after the light pulse is directed to the target location, so that at least part of the detection devices of hair or devices for hair removal, re-sent the next light pulse on the hair.

Protective equipment do not allow the filing of light pulses on the same hair more than a specified number of times. Depending on the type of the target's hair, a specified number of times that you want to delete the target of the hair may be one, two or more times. Because the invention does not allow the filing of light pulses by more than a specified number of times, no Pets skin damage or injury and reduced energy consumption. The system according to the invention is more user-friendly and, for example, can be used by inexperienced or unprofessional users. During the safety measures, protective equipment, for example, blocking the flow of the light pulse or block the detection of the hair. In addition, the safety means may races is Osnat multiple detection of the same hair and after that give rise to the period of safety measures.

In one embodiment, the safety means include electronic delay for the implementation of the mentioned period safety measures. Means to implement the delay period safety measures. Means delays can be part of one or more parts of the system, and the signal delay does not allow the filing of the light pulse on the same hair more than once.

In an additional embodiment, electronic delay contain a shift register. The shift register provides a relatively simple, easily accessible and low-cost implementation of tools for the delay.

In another embodiment, electronic delay include a filter containing at least one container, and the control unit is configured to charge the tank to the maximum level, which is above the threshold level, after the control unit has detected the appropriate hair for the first time. The filter provides a simple, reliable and low-cost implementation of tools for the delay.

In an additional embodiment, the time during which the capacitance is charged to a level above the threshold, determines the amount of safety measures. Discharge period includes a charge period and a discharge period. The charging period can is to be longer or shorter period of discharge.

In another embodiment, the control unit is configured to charge the vessel whenever it finds one and the same hair.

In yet another embodiment, the safety means include storage means associated with the control unit. The amount of memory and speed of update of the data contained in the memory device can determine the period of safety measures. May be provided for different installation options. The storage device may contain, for example, a relatively simple shift register. Detecting the specific hair is stored in a storage device that depends on the number of positions in the register and the refresh rate. The number of positions and the refresh rate can be selected depending on the application, speed of cutting, etc.

In an additional embodiment, the safety means include means biases associated with the control unit when operating the system for hair removal, the funds deviations are located between the skin and the detection device of hair and/or between the skin and the device for hair removal and have a first state in which light can pass in a given direction, and a second state in which light is deflected from the predetermined direction during the period safety measures, means to deflect the beam deflection from the path leading from the detection devices of the hair to the skin and/or from the device for hair removal to skin, or Vice versa.

Means variances may contain liquid crystal device. The LCD device comprises a liquid crystal, such as in liquid crystal display. The relatively small amount of electrical energy will be sufficient for rejection of light from a given light path, as described above. In addition, the LCD device is relatively small and is flat and, thus, can be easily integrated into existing systems for hair removal.

In another embodiment, the deflecting means include a thermally reversible light-diffusing material (Thermally Reversible Light Scattering, TRLS). Such materials are capable of reversible change from a transparent state to an opaque state, using the temperature changes.

In one embodiment, the means variances contain the Sol-gel. The Sol-gel can reversibly switch from the aqueous solution of the polymer to gel by changing environmental conditions. An aqueous solution essentially permeable, while the gel rejects the light. Changes in environmental conditions may include temperature changes and changes in pH. Gel preserves the integral structure within a specified period of time, which can be selected for the implementation period safety measures.

BRIEF DESCRIPTION of DRAWINGS

The above features of the invention will be discussed with reference to the accompanying drawings, where:

1 schematically shows an example system for hair removal;

figure 2 schematically shows the first image sensor used in the system shown in figure 1;

figure 3 schematically shows a second image sensor used in the system shown in figure 1;

figure 4 is a schematic representation of first and second field of view that includes one hair on the skin;

figure 5 schematically shows an example of a fragment system for hair removal;

on figa and 6b shows two stages of a method of determining the position of the hair and cutting hair;

7 schematically shows an example of the image sensor designed for a system for hair removal;

on Fig shown rotated matrix of the lenses to the image sensor or the light source system for hair removal;

on figa shows a front view of an Assembly comprising a matrix of sensors, the matrix of lenses and means for interrupting the light beam of the present invention;

on fig.9b shows a side view of the Assembly shown in figa;

on Phi is a schematically shows the detection signal of the hair of the present invention, while x-axis represents time t;

on fig.10b schematically shows signal blocker detection corresponding to the detection signal on figa;

on figa schematically shows the detection signal of the hair of the present invention, the x-axis is time t;

on fig.11b schematically shows the digitized detection signal of hair corresponding to the detection signal of the hair on figa; and

on figs schematically shows signal blocker detection corresponding to the signals on figa and fig.11b.

DESCRIPTION of embodiments

1 schematically shows an example of a system 1 for hair removal, which uses a light source for temporary or permanent hair removal.

The system 1 includes a housing 10 with the first image sensor 12 and the second image sensor 14, an adjustable lens 16, block 18 of the control device 20 for hair removal, as well as optical connection 22. A separate movable lens 16, as well as the optical connection 22 can be used for selection, as shown below.

This figure also shows the skin 30 32 hair that should be removed.

The housing 10 of the system 1 contains only the parts that are relevant as examples to the functioning of the system for hair removal. Obviously, additional parts, such as power the Oia, the optical window, etc. may also be present, but not shown.

The first image sensor 12 may include, for example, a CCD camera, a CMOS device, etc. the Second image sensor 14 is connected with an adjustable lens 16 and may include a scanning unit.

Both sensors 12 and 14 of the image connected to the control block 18, which is made with recognition of the hair of the images obtained by the sensors 12 and 14.

With the control block 18 is also connected device for hair removal, such as laser system, electrical epilation, etc. Lens 16 can move in the direction of arrow A, to produce a focus at different values of z, with the purpose of scanning and imaging in the z-direction. If necessary, the adjustable lens 16 can be moved sideways, for example, in the direction perpendicular to the arrow A to release the field of view of the first image sensor 12.

Figure 2 schematically shows the first image sensor used in the system. Here, as in all the figures, similar parts have the same reference position. In this figure the reference position 40 refers to the CCD 42 refers to the optical system, and 44 relates to the field of view CCD.

Figure 2 in the field of view CCD are several hair 32, namely three, because most CCD cameras have a field of view, for example, R who ate one or more cm 2. In this area, for example, the beard of a man found several hair. However, the resolution and the range in the perpendicular direction, for example, in the z-direction, as shown in figure 2, is limited and determined by the characteristics of the optical system 42. It should be noted that the CCD can detect the image at one stage, when all pixels are filled simultaneously.

Since the CCD image sensor itself is known in the art, its details are not described here.

Figure 3 schematically shows a second image sensor that can be used in the system for hair removal. In this figure the reference position 50 refers to the laser source 51 to the beam splitter, 52 to the device for beam control of a movable mirror 54, able to move, for example, in the direction of arrow B. the Detector is denoted by the reference position 56 and lens 58 is able to move in the direction of arrow C.

Alternatively, the laser source 50 may be selected in any other suitable radiation source, such as LED with lens. The emitted beam is partially splitter 51 of the beam (which may or may not be polarizing)and partly reflected downward, for example, in the trap beam (not shown).

The device 52 to control the beam can be controlled, for example, a control unit (not pok is Zan) and contains a movable mirror 54, such as a polygonal mirror, or any other suitable type of mirror is used to scan the image. As shown, the mirror 54 can be moved, for example, be rotated in the direction of arrow B to scan the radiated beam of the desired region, in this case, the second field of view. In practice, the field of view of the second image sensor will have a size of approximately 0.5 mm × 0.5 mm in the directions x, y and the same size in the z-direction. To obtain the latest range, the optical system or lens 58 is able to move in the direction C. In alternative can be adjusted optical power of the optical system or lens 58, i.e. its focal length.

The detector 56 is optically associated with the device 52 to control the beam through the beam splitter 51 of the beam. Radiation reflected, had been Raman scattering, etc. on the skin 30 and 32 hair, is reflected by the mirror 54 in the direction of the beam splitter 51 of the beam will be partially reflected in the direction of the detector 56.

The detector 56 may include CCD or CMOS, or any other type of photodetector, or matrix such. The detector 56 also must be associated with a control unit (not shown), so the control unit can determine the location and/or orientation of the hair 32 on the skin 30. For this second image sensor is obtained three-dimensional image is agenie. This type of image sensor may also be called 3D scanning sensor. For more details, essentially known on the existing prior art and obvious to the expert, will not be considered.

Figure 4 is a schematic representation of the field of view of the first and second image sensors, including one hair on the skin.

Region, denoted as I, is a square of about 2×2 mm, It is 1/100ththe surface area of the average field of view of the CCD sensor, according to the dotted lines III. Region I of size 2×2 mm represents the average surface area per 32 hair beard man. Hair 32 drawn to scale, albeit schematically, with its diameter of about 120 microns. Also shown is the surface, denoted as II. It represents the average surface area that can be scanned modern 3D scanning sensor. Its dimensions are approximately 0,5×0,5(×0,5) mm From this figure it is clear that a relatively small part of the overall field of view of the first (CCD) sensor must be scanned by the second image sensor (surface area II). Since 3D-scanning the last image sensor is, in General, the more time, the second image sensor can be used more efficiently.

Figure 5 schematically shows an example system for removed the hair I learn more. This figure S1 in General denotes a first image sensor, S2 denotes a second image sensor, and S3 denotes a system for hair removal.

The second sensor S2 image includes detecting the laser 60, the beam splitter 62 beam interrupter 66, the first polarizing splitter 68 beam with the first usersmanual surface 69, the first lens 70, the first dot hole 72, the band-pass filter 74 and the detector 76. In addition, it contains a λ/4-plate 80, the mirror 82 and the lens 84 of the lens.

The first sensor S1 of the image, in General, contains a second polarizing beam splitter 86 beam from the second usersmanual surface 88, the diaphragm 90, the tubular lens 92 and CCD 94, and the lens 96 LED and LED 98.

Device for hair removal includes laser cutting 64. Cutting laser 64, the detecting laser 60, the detector 76, and CCD 94 and lens 84 of the lens can be all connected to the control unit (not shown). In addition, the detecting laser 60 and the cutting laser 64 can also be one and the same laser, especially if it is a custom laser. Moreover, the various parts are not required, for example, in the latter case, the beam splitter 62 beam interrupter 66, polarizing beam splitters 68 and 86 ray, point hole 72 and 90, λ/4-plate 80 and the mirror 82.

Light for implementing the method of the CCD detection in the first sensor S1 image radiates pic what edstam LED 98 with additional lens 96 LED. Part of the radiation reflected by the surface 88, passes through the mirror 82, which is permeable to the LED radiation, but has a high reflectivity, for example, 1064 nm radiation in this case, and gets on the skin 30 with hair 32. Their image is reflected and again passes through the second polarizing splitter 86 beam, spot the hole 90, the tubular lens 92 and detected using a CCD 94. It should be noted that the lens 84 of the lens is movable and can be moved aside. It should also be noted that the light or other radiation, such as infrared radiation, can also be served directly, i.e. not confocal. For example, the LED can emit directly on the skin. In these cases, the polarizing beam splitter 86 of the beam is not required.

On figa and 6b shows two stages of a method of determining the position of the hair and cutting hair. In these figures the position II shown an image of the skin area on which there is one hair 32. The reference position 100 refers to a guideline, and 102 to the movable lens element.

In practice the system in full is moved over the skin. Since movement is relative, in figure 6a is represented by the movement of the hair shaft 32 with velocity v in the direction shown by the arrows. Using the first and second image sensors, determine the approximate position 32 hair in coor is inutah x,y. Then the movable lens 102 is moved along the guide 100 in the location x,y, see fig.6b, where a scan to determine the position along the z axis. When the location in three dimensions is accurate enough, the hair can be removed by a laser beam, an electric hair removal by an appropriate positioning of the electric needles etc.

With reference to the preceding description, it is possible to give the following numerical example. The average speed v when the shave is about 5 cm/sec. Useful resolution in the x,y plane is about 20 μm. When a normal cell, 1000×1000 pixels, it will be a common field of 2 cm × cm This in turn will cause the frame rate of 2.5 kHz or exposure time of 0.4 MS. Such measures can be easily obtained using CMOS-system. Movable lens 102 may, for example, to provide a lens on the DVD drive sled that has the normal access time 15 MS (66 Hz). While the block DVD drive has a resolution of about 20 nm, a permit is required only about 20 microns. These less stringent requirements in respect of the permit may also lead to even shorter access time. Drive the movable lens can move the lens in the direction of y,z 1-2 mm with a frequency of 5-6 kHz (0,16-0,20, msec). When the movable lens occupies its proper place, the actuator together with the lens can hold local is generowanie 3D method, as explained earlier. With proper positioning, again, the hair can be removed using any suitable technology.

Limiting time factor system according to the above description is the access time of the mobile lens, which is approximately 15 MS. For a typical beard man, which has about 12000 hair, this will cause the time shave will be approximately 3 minutes, which corresponds to shave.

In another system for hair removal, schematically shown in Fig.7 and 8, uses a lot of lenses, or matrix of lenses. In particular, the reference position 110 refers to the image sensor (such as CCD/CMOS), while the first, second and third matrix of movable lenses marked 112, 114 and 122, respectively. Reference position 116 marked polarizing beam splitter, 118 - ring light aperture, and 120 lens. Various other components such as light sources, a λ/4-plate, control box, etc. that are not shown. The reference position 30 marked skin that has hair 32.

The system shown in Fig.7 illustrates the first stage of the display, stage 2D-display. The apertures of the third matrix 122 lenses are projected by the lens 120 of the aperture of the second matrix 114 lenses, which in turn is projected to the aperture of the first matrix 112 lenses, and they in turn proeciruyuschaya sensor 110 of the image. Now the image of the object, in this case, the skin 30, is projected onto the sensor 110 of the image so that the image with separate lenses, each in itself a mirror is not displayed. Each lens creates a small portion of a larger image of the object. At the same time, the lens 120 projects the light-emitting circular aperture 118 in the third matrix 122 lenses.

Each of the matrices of lenses may be provided essentially in the same continuous movement of the harmonious nature, for example, rotational or oscillatory, in the plane of the sensor 110 of the image. At the same time, the entire system moves laterally along the skin 30 by the user of the system to perform the shaving. In General, each lens of the three matrices lens, which forms a single face display system, creates a projection area of interest or field of view, sensor 110 images in repeating mode.

Each point of the object 30, 32 in the field of view of the third matrix 122 lenses preferably, but not exclusively, appears with such frequency that a lateral move from one scan to another effect performed by the user of the lateral displacement is roughly equivalent to the intended target lateral resolution equal to, for example, 20 μm, and does not exceed it significantly.

The sensor 110 is undergoing the same lateral movement, which matrix is lenses but its motion is not harmonic. Therefore, the image of the object 30, 32, projected on the sensor 110, is moved at the same speed in the lateral direction as the lens matrix of lenses in combination with the image sensor, while the harmonic movement (rotation, vibration and so on) only subject to the matrix 112, 114, 122 lenses.

In the system shown in Fig.7, the lens 120 is the projection aperture of the third matrix 122 of the lens at the aperture of the second matrix 114 lenses. On each side of the lens 120, therefore, is accessible to a considerable amount of space, and this space can be used for the second stage of the detection process, which will be described below, and for light communication, which is required to form the image.

For the latter purpose, in this case, a polarizing beam splitter 116 of the beam. The light emitted ring light aperture 118 and supplied, for example, fiber optics, from (halogen) incandescent lamp, one or more LED and the like, is projected through an additional lens 120 on the apertures of the third matrix 122 lenses so that each lens of this matrix highlights his / her respective field of view more or less uniform manner. In practice this can be achieved by imaging the light from the ring light aperture 118 in the rear focal plane of the lens is retia matrix 122 lenses. This preferably is accomplished by ensuring that the light emitted from the aperture 118 is distributed similar to the distribution of multiple lenses. This will be clarified with reference to Fig, which shows the matrix of lenses.

In the numerical example showing the technical possibilities, it is assumed that the desired resolution is 20 μm, although, of course, possible to use other values. The speed at which the user moves the system in the skin, has been taken equal to not more than 5 cm/S. Again, in other cases these values can be changed, which will lead to corresponding changes in the following figures.

Let us further assume that the matrix of lenses consist of a disk with a diameter of about 2 cm with lots of 2 mm aperture lenses, evenly spaced around the circumference, as shown in Fig. Although shown 16 lenses, in this numerical example, we assume the presence of 25 lenses. In order to scan the image across the ring once, ring lenses should take a turn on 360/25=14.4 degrees, as shown by the arrow D. Therefore, in order to achieve the desired resolution of 20 μm on the whole field with the moving speed of 5 cm/s, the disk must rotate with a frequency of about 100 Hz, so that the region to show every 0,020/50 = 400 μs, or update frequency of 2.5 kHz. 2D images are recorded by the sensor 110 and the considerations applying such as CCD or CMOS image sensor, and preferably with the same update frequency (2.5 kHz)to dynamic distortions were minimal. In addition, you need at least 1000×1000 pixels to ensure that the surface area of 2×2 cm will be displayed with a resolution of 20 μm. As these figures and the required update rate is easily achieved with the use of modern CCD and CMOS technologies. It is obvious that other shapes and sizes for the drive number and apertures, lenses, etc. that will require change other digits.

The stage display, described above, represents the first stage in the entire process of the display, which receives a 2D image. Note that the resolution of 20 μm or similar value at this stage is not yet required. You can choose a lower resolution with less time of data collection, because it can be obtained the approximate location of the target. A more precise location at the required resolution can be obtained in the second stage of the display, i.e. using the second image sensor.

In the second stage, the display having a specific purpose, such as hair or detected on a specific and fixed depth (or z coordinate), or scanned in order to determine its position and orientation in space. These options can be selected for each of the th system for hair removal according to the invention. In the example shown here selected the first option, for example, to shave the hair at a certain length. The presence of a target at a certain depth is determined, for example, by using confocal laser scanning using a cross-polarization. For this purpose, the laser beam induce selected through the lens of the third matrix 122 lenses. This selected lens will focus the laser beam at a point which moves parallel to the moving lens, i.e. making the rotation, oscillation, etc. Lens colliery light reflected back from the focal volume. When this first selected lens fully extends beyond the action of the laser beam, the second adjacent lens comes into range of a laser beam and performs a new scan. The resolution in the lateral direction of the detection, thus, due to the resolution of confocal scanning, and the distance between successive scans is determined by the rate at which the system as a whole moves in the target area of the skin. The reflection intensity of the orthogonal polarized light that is reflected or scattered back from the target area detected by confocal polarizing beam splitter 116 of the beam and the combination of the lens-point hole", which is not shown here, but shown in figure 5. The amount of light for wakanoho detector, and its change as a function of lens position, and, therefore, a function of time, can provide information about the presence of different structures in the focal area (field of view) and thus to determine their 3D position and/or orientation.

In the embodiment, a laser shaver system may operate as follows. The first image sensor detects the image of the skin having hair, and a control unit, not shown, but either built into the chip (CMOS), or as a separate module, determines the approximate position of the hair or hair on the skin. The precision can be about 100 or 200 μm. When such coarse position is set, the control unit may direct detection laser, for example, by deflecting unit (not shown, but indicated by the positions 52, 54, figure 3), such as MOEMS (presented an estimate system) or the moving mirror of a different type, and girondolo mirror between the third rotating matrix 122 lenses and lens 120, in the direction of the location on a rotating matrix of lenses, where they found hair in a rough approximation.

Next, the control unit writes the results of confocal laser scanning and interprets the results, i.e. there is a second stage display. When the presence and position of the hair installed by using method 3D detektirovanie is with the use of cross-polarization, and when it is determined that the position of the hair relative to the focus lens satisfies the required accuracy, the detection system activates the cutting laser, which emits a continuous or pulsed laser radiation entering the lens collinear or under a known angle, and, thus, focused on the initial focal spot of the detecting laser or a known distance from that focus, respectively. Radiation laser cutting next hair cut.

Various aspects of the methods and devices described without resorting here to mention them explicitly, can be used to vary the specialist. For example, it is clear that preferably the beam of the detecting laser must pass through only one lens matrix of lenses or matrix of lenses in each moment of time; in other words, the diameter of the laser beam is preferably less than the spacing of the lenses to avoid ambiguous results of the detection. In addition, the shape of the disc 130, number, step, location and size of the lenses 132, movement, etc. can be changed in this way, if properly changed corresponding to the required quantitative parameters, etc. more precisely, the above example only illustrates the applicability of the system for hair removal. In addition, all pericycle the different examples of the preferred method of hair removal were cutting with a laser beam. However, in the context of the invention are also possible other hair removal methods, such as electrocapillary, or only damage your hair or their roots, etc. In all cases requires knowledge of the exact position, and sometimes the orientation of the individual hair to remove them. The finding of this provision, particularly in three dimensions, can take a long time. The final 3D position can be found by use of the first two coordinates of the first stage display and adding a third coordinate in the second stage, display, or all three coordinates can be determined in the second stage after the first rough assessment on the first 2D stage, etc.

The present invention provides a system that includes signs to prevent the filing of a light beam in the same hair more than once. Below are described several embodiments of the invention, which are accompanied by more detailed examples of the invention.

The cutting process may be blocked temporarily and/or locally. Blocking the process of cutting can be performed, for example, by introducing a predetermined delay between successive feeds of the light beam. If the light source system includes, for example, the laser usually requires a certain time to ensure crystal laser eno is the major supply of energy, to display crystal (again) at a given energy level. Depending on the application, the specified energy level should be sufficient to create a laser beam that can cut your hair to destroy the hair root. Due to the time required for repeated messages energy crystal laser, i.e. the delay time, the laser will not be able to work again. The delay time can be adjusted to the respective application with integrated circuits, which includes the vessel or other means of signal delay.

The inclusion of the delay circuit can be implemented, for example, in combination with crystal laser, which essentially covers the field of view fully, or with a laser diode in combination with the addressing mechanism.

In another embodiment, the system includes a storage device. Storage device registers, for example, points in time, in which the emitted laser pulse, and/or target coordinates of the laser beam on the skin. Target coordinates on the skin unite, forming a "map" of the skin, which includes all discovered hair. The next pulse will be blocked until the specified lock.

The lockout time is determined on the basis of several parameters. The parameters can include one who does more of the following: estimated speed of the device relative to the skin during operation (speed shaving) the required resolution in the detection of hair, the update rate of the sensor or sensors, lenses, and the average diameter of the target hair.

As an example, assume that the speed of shaving v is approximately equal to 50 mm/s in order to obtain permission for detecting res., equal to about 20 μm, the skin should appear with a frequency f, equal to about f=v/res=2500 Hz. The time between successive moments of discovery will be approximately t=1/2500=0,4 MS.

Target hair can have a diameter of about 150 microns. When the speed of shave about 50 mm/s, the system is able to detect the hair for approximately (150 μm/50 mm/s)=3 MS. With these parameters, the system can detect hair maximum (3 MS/0,4 MS+1)=7+1=8 times. System for hair removal preferably emits a light pulse in the middle of the hair. The system, therefore, can be configured to wait, for example, approximately 1.5 MS after the first detection, the emission then the light pulse, followed by blocking for blocking time of about 2 MS.

The above is only an example. Another target of the hair may have a substantially larger diameter, for example, 500 microns or less in diameter. The control block 18 can optionally include a number of preset settings, each setting is optimized, for example, for a particular diameter of the hair and/or hair density on the skin. Thus, the system can be used by different people and for different parts of the body.

Using the above map, which includes all the coordinates on the skin that is stored in the storage device, the process of hair can be locked to specific addressable locations. An example of addressable matrix LED below.

In one embodiment, the system is arranged to interrupt signals to one or more light sources. Control logic for controlling light source, for example, can block the control signal to the corresponding light sources.

In another embodiment, the system includes a means, not allowing the beam to reach the photodetector. The light is blocked, for example, for a specified period of time or until the level of the detection signal of the hair will not fall below a specified value. The examples below.

In yet another embodiment, the system includes means variances, which are located between the system and the skin. Tools of variance performed with the opportunity to reject the light. Tools deviations include, for example, the transparency window, which becomes opaque after a specified time. To remedy deviations may be submitted to the control signal. Operated the speaker signal includes, for example, the RF signal having a specific wavelength, or regulated temperature. LCD display allows you to block light at specified locations, which includes, for example, on the above map of the skin.

In an additional embodiment, the system includes, for example, the system software to recognize multiple detection of the same hair. The storage device records the detection signal of hair for each addressable location to map the locations and the hair on the skin. Using this map, the program can detect whether the signals are detected within a certain minimum distance from each other, which thus indicates multiple detection of the same hair. Map in the storage device may also indicate whether the emitted light beam in a certain hair. The program in this case will not allow the system again directed light beam to the corresponding hair.

Specific examples of implementation of the above-described embodiments set forth below with reference to figures 9-11.

Example 1

Detection of hair and cutting hair can be temporarily blocked with the use of means variances are settled between the hair and the light source.

On figa and 9b shows a matrix 200 LED containing multiple light emitting diodes 202. Each LED 202 is connected with the control circuit (e.g. circuit 18 controls figure 1) through the wiring 204. Each LED, thus, can be separately enabled or disabled. This figure also shows the matrix 210 lens containing many lenses 212. This matrix of lenses can be compared, for example, with a matrix of lenses 122, shown in Fig.7. Lens 212 matrix 210 lenses focus light emitted by the light emitting diodes 202 to the target location, such as hair.

Liquid crystal matrix 214 is located between the matrix 200 and LED matrix 210 lenses. Liquid crystal matrix 214 includes many liquid crystal elements 216, one for each LED 202 and/or the lens 212. Liquid crystal elements 216 are connected with the circuit 18 controls through wiring (not shown) and can be controlled separately from each other. In the first state, the liquid crystal elements are transparent, allowing light to pass and follow the given trajectory 220 light (fig.9b). In the second state, the liquid crystal elements deflect light passing from the trajectory 220 light, for example, in the direction of arrows 222, 224 (fig.9b).

Scheme 18 control can switch the liquid crystal elements from the first state into the second state and Vice versa. Liquid crystal matrix 214 and the liquid crystal elements 216 are examples of the above deviations. If one of the liquid crystal element 216 is in the second state, light passing will be rejected and will not achieve any hair/skin or CCD 110, depending on the location of the liquid-crystal matrix in the system.

The tool block 214 (figa, 9b) may include any other material capable of switching from a state of transparency in other svetootrazauschii state. Examples of such materials include:

- thermally reversible light-diffusing material (Thermally Reversible Light Scattering, TRLS);

the Sol - gels.

TRLS-material is a heat-sensitive material that changes essentially optically transparent state to essentially optically opaque state at a given temperature and back which becomes essentially optically transparent upon cooling below the second predetermined temperature. TRLS materials are available as films that can reversibly change from an opaque state to a transparent state. To induce a transition can locally change the temperature by focusing of light in one or more places.

TRLS-material may include a dispersion of organic crystals in thermo is terepaima material or polymer. TRLS-material can absorb energy (laser) upon reaching the target temperature. In one embodiment, the polymer or mixture of polymers are part of a skin patch. The polymer or mixture of polymers transparent or essentially transparent at ambient temperature. A laser or similar form of energy suitable for photodynamic cutting hair, goes through the skin patch to a target tissue, as described above. As the tissue in the target region absorbs the energy of therapeutic light, its temperature begins to rise. Likewise begins to rise the temperature of the skin patch.

When heated to temperatures above the threshold, the polymer or mixture of polymers alter the optical properties, and the polymer or mixture of polymers become reflective, light-absorbing or light-scattering, thereby reducing further energy impact. As the energy absorbed in tissue, dissipare, the temperature of the target area is reduced, and the skin patch again becomes impermeable or substantially impermeable, thereby allowing you to continue the process of cutting, almost unabated. By using proper skin patch of the true temperature of the target tissue can be carefully controlled, it is possible to avoid negative the x side effects from excessive exposure to the light source and to perform the process of cutting hair without a break.

Sol-gels include materials capable of phase transition of the Sol-gel. Sol-gels include, for example, aqueous solutions of polymers, which are converted into gels by changing environmental conditions such as temperature and acidity (pH), in the real world leads to the formation of the hydrogel. When the hydrogel is formed under the influence of physiological conditions, it can retain its integral structure within the required period of time.

It is reasonable to generalize polymer systems undergoing transition Sol-gel, in particular due to the temperature, while highlighting the mechanisms underlying the transition, as well as potential aspects of delivery. Sol-gels include, for example, polymeric systems based on natural or modified natural polymers, N-isopropylacrylamide polymers, poly(ethyleneoxide)/poly(propyleneoxide) block copolymers and poly(etilenglikolevykh)/poly(lactide-glycolide) block copolymers.

According to Fig.7, the tool 214 deviations can be mounted in any convenient place in the system for hair removal. For example, but not limited to:

i) between the skin 30 and the sensor 122 lenses;

ii) between the matrix 122 lenses and lens 120;

iii) between the lens 120 and the beam splitter 116 beam;

iv) between the light source (or aperture 118) and respite who eat 116 beam; or

v) between the CCD 110, and the lens 112.

On the one hand, the tool deflection can prevent multiple detecting the specific hair by the light deflection from the path 220 after the first peak signal detection. On the other hand, the tool deflection may not be allowed to light reached a means of detection, such as CCD 110.

Example 2

System for hair removal may include a storage device for storing information on the detection relating to one or more polling locations on the target skin area. Each location is separately addressable, i.e. the light beam can be directed in any location separately without affecting the other locations. The storage device may be part of the scheme 18 control or be associated with it (figure 1).

In one embodiment, the memory device includes a shift register. The shift register is a group of triggers established in the linear order, the inputs and outputs of which are connected to each other so that data is shifted along the line when you activate schema.

The present invention includes, for example, a shift register with serial input and serial output. This is a relatively simple type shift register. Line d is the R appears in the "data input" and shifted to the right by one digit each time you receive the command "shift data". When each of the bits in the leftmost digit (i.e. the "data input") is shifted to the output of the first trigger. Bits in the rightmost digit ("output") is shifted without saving and lost. For example:

0000

1000

1100

0110

1011

0101

0010

In this scheme there are four cells for storing information; therefore, have a 4-bit register. To give an idea of the shift circuit, imagine that the register contains 0000 (so all the cells are empty). Input "input data" the following: 1,1,0,1,0,0,0,0. Data is shifted in this order every time when receiving a pulse of the "shift data". The momentum shift data is generated by a clock generator operating at a given frequency. The left column corresponds to the leftmost output output trigger etc.

Accordingly, the serial data output register will be 0,0,0,0,1,1,0,1,0,0,0,0 (including four zero, which is already contained in the register). If you continue to enter data, the output will be exactly what you enter, however, offset by four cycles of the "shift data". This scheme is equivalent to the hardware or software of the lining. In addition, the entire register can be reset at any time by the engagement of pin reset.

This scheme performs sityva the s with the destruction of information that is, all data is lost after they moved from the rightmost bit.

Storage device, which includes, for example, the shift register may implement a safety tool and/or tool for the detection of multiple detections of the same hair. For each location on the map storage device includes a separate shift register. Each location corresponds to, for example, an area of about 20 square microns. Together shift registers form a map, containing the history of discoveries.

In one embodiment, whenever it detects the hair in a specific location, a logical unit corresponding to this location is entered into the shift register.

Thus, the shift register generates the history of discoveries. The number of bits in the shift register and the frequency of the clock generator determines the accuracy of such stories. Accuracy may also depend on the velocity of the device for hair removal on skin 30 (figure 5).

The story, created shift register can be used to recognize multiple detections of the same hair that depends on the accuracy and resolution of the detection system (of the order of 10-30 μm). For example, the settings may be such that h is of logical units, within, for example, 4 bits from each other, are considered as representing the detection of the same hair. This means that in the above example, input data (1,1,0,1,0,0,0,0) all units are within the four bits from each other and are considered as representing the detection of the same hair. After the last unit of the input data contains a series of four zeros. If the input data will then contain 1, this unit will be considered as the discovery of another hair.

In addition to the recognition of multiple detections, history also increases the reliability of detection. Ultimately, the accuracy of detection will be higher if the same hair found several times. To avoid the "volley" non-existent hair and to improve the accuracy, tuning system parameters for hair removal can, thus, to provide a "punch" on hair, which is found, for example, twice or three times.

Example 3

The system of the present invention includes, for example, electronic delay (not shown). Electronic delay configured to delay transmission of the signal to the appropriate location in the system for hair removal.

The above-described shift register may be included in electronic zadeh the LCD. For each location on the map of electronic delays include a separate shift register. Instead of typing 1 upon detection of the hair in each respective shift register is provided by a logical unit whenever the initiation of the light pulse in the corresponding location, and a logical zero if the light pulse is absent. The cutting process is temporarily suspended in an appropriate location until such time as the shift register contains the logical unit. The process of cutting is again possible if the register contains the number of zeros (0).

The number of bits in the shift register in conjunction with the update rate of the bits in the register (frequency generator clock)determines the delay time of the cutting process.

Example 4

In another embodiment, electronic delay include a filter, such as a passive RC circuit. The filter includes at least one container, and may also include one or more resistors R and/or inductive elements. If the system detects the hair in a specific location at time t1 for the first time (see, for example, figure 3), the control circuit charges the capacitance of the RC-circuit in accordance with this location. The capacitance is charged to a predetermined peak level 230 detection (figa). the donkey charging capacity will be discharged. At time t2, the charge capacity decreases below the predetermined threshold value 232, forming a specified discharge time tdelta. In our case, t2-t1=tdelta.

Up until the charge capacity is above the threshold 232, scheme 18 control signals 234 lock at a high logical level 1 (fig.10b). If the battery capacity has dropped below the threshold value 232, i.e. in the example on figa before t1 and after t2, the circuit 18, the control sends a signal lock at a low logical level 0 (fig.10b). Upon detection of the hair will be served one light pulse. After that, the control circuit blocks the achievement of the light beam of the same hair again as long as the signal 234 of the lock is at a high level 1, i.e. for tdelta.

Blocking achieve light beam hair in the present description can include any tool, for example, blocking of the light emission of the light source, the blocking of the light beam at any stage between the light source and the hair (compare figa) or blocking signal detection.

The RC circuit may also be charged to a peak level 230 in the first time t1, and at each subsequent time t2, when the detected hair (figa). In the interval between successive detections capacity is discharged. Up until the charge capacity remains above ogboi value 232, scheme 18 management provides the digitized signal 240 detection at a high logical level 1 (fig.11b). When the battery capacity becomes lower than the threshold 232, the digitized signal 240 detection takes low logic level of 0.

The control circuit takes the signal 242 lock (figs). After the discovery of hair at time t1 blocking signal remains at a low logical level 0 within a specified time, for example, until time t2. While the inhibit signal is low, the light beam from the light source is able to reach the hair. Since the digitized signal 240 detection remains high until time t2, the control circuit increases the blocking signal to a high logic level 1, up until the digitized detection signal maintains a high level 1. When the inhibit signal has a high level, the light from the light source cannot reach the hair. Cutting, thus is blocked, for example, any of the methods mentioned above. When the detection signal (figa) decreases below a threshold, or when the digitized detection signal returns to the low level 0, the control scheme reduces the blocking signal to a low level of 0.

Although the invention has been described above with reference to a manual system for hair removal, which includes the device from the images, containing the image sensor, the system may include other means for positioning the radiation processing of the light beam. The system of the present invention is also suitable for systems that include such other means of identification. Examples of such systems definitions are explained below. The determination preferably are working in real-time and non-invasive technologies targeting.

Means for determining may find your hair on the basis of, for example, reflections from the skin. If the area of skin that needs to be processed is small, the reflection from the skin will be significantly different in the presence of hair. Reflections from the skin compared with the reference reflections from the skin, which are stored in the storage device system to determine the presence of one or more hair.

The invention has been described and illustrated with reference to examples of embodiments and figures. However, many modifications of the above embodiments are possible within the scope of the claims appended claims. For example, the characteristics of the respective embodiments can be combined. Scope of the invention defined by the attached claims.

1. System for hair removal, which contains:
the device OBN is pursued hair for the detection of hair on the skin (30), to be processed;
the device (20; S3) for hair removal, functionally associated with the device discovery hair and includes a light source to generate light pulse and the light guide means for directing the light pulse from the light source to a destination on the hair; and
unit (18) of the control associated with the device discovery hair and a device (20; S3) for hair removal, so as to control their operation, and the control unit determines the location of targets and activates the light source to generate light pulse during the time period in which the detecting device of hair are able to detect hair,
characterized in that it contains
safety means associated with the block (18) control and are designed to prevent the re-direction of the next pulse of light to the hair at least part of the detection devices of hair or device for hair removal in the period safety measures, during which the detecting device of hair are able to detect the hair, and starts after the light pulse was sent to the destination.

2. The system for removing hair according to claim 1, in which the detecting device of hair contains a display device containing a first sensor (12; S1) image, which is configured to detect the image area of the skin (30)that is to be processed, and a control unit configured to recognition of the hair in the image.

3. The system for removing hair according to claim 1, in which the safety means include electronic delay for the implementation of the mentioned period safety measures.

4. The system for removing hair according to claim 3, in which the electronic delay contain a shift register.

5. The system for removing hair according to claim 3, in which the electronic delay include a filter containing at least one container, and a control unit configured to charge the capacitance to a peak (230), which is above the threshold level (232), after the control unit has detected the appropriate hair for the first time.

6. The system for removing hair according to claim 5, in which the time during which the capacitance is charged to a level above the threshold, determines the amount of safety measures.

7. The system for removing hair according to claim 5, in which the control unit is configured to charge the vessel whenever it finds one and the same hair.

8. The system for removing hair according to claim 5, in which the block (18) is a control with the possibility of conversion of the capacity charge in the digitized signal is l (240) detection, having a high logic level, when the battery capacity is above the threshold level, and a logic low when the battery capacity is below the threshold.

9. System for removal of hair of claim 8, in which the control unit is arranged to provide a signal (242) lock to lock of hair removal when the digitized detection signal is at a high logic level for a time longer than the preset detection time.

10. The system for removing hair according to claim 1, in which the safety means include storage means associated with the control unit.

11. System for removal of hair of claim 10, in which the storage means includes shift register.

12. The system for removing hair according to claim 1, in which the safety means include means biases associated with the control unit, and operating system for hair removal tools deviations located:
between the skin (30), and the detection device of hair and/or
between the skin (30) and device for hair removal,
this safety means have a first state in which light can pass in a given direction, and a second state in which the light deviates from the specified direction.

13. System for hair removal on section 12, in which means deviations content is t LCD device.

14. System for hair removal on 13 additionally containing a matrix of light sources (200), while the liquid crystal device comprises a liquid crystal matrix (214)having liquid crystal elements (216), and each liquid crystal element (216) works in conjunction with one corresponding light source (202), the matrix of light sources (200).

15. System for hair removal on section 12, in which the deflecting means include a thermally reversible light-diffusing material (TRLS) or Sol-gel.



 

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3 cl, 1 ex

FIELD: medicine.

SUBSTANCE: group of inventions relates to medicine and medical equipment, in particular to method of connecting mechanical connecting unit of laser device to stabilising component held on biological tissue by its suction force, and to apparatus for cutting part of eye by means of focused laser irradiation. Method lies in the following: mutual approaching of connecting unit and stabilising component is carried out until first relative position, in which any contact between tissue and surface adjacent to it is absent or already exists, is achieved. After that, with said components being in said first relative position, pumping out of sucking chamber, formed between connecting unit, stabilising component and tissue surface, is performed in order to create contact between tissue and adjacent to it surface of connecting unit or for increasing zone of already existing contact. Claimed apparatus for cutting tissue of part of eye by means of focused laser irradiation, in particular with application of method described above, contains unit of adhering by suction ring, intended for installation on eye and having ring axis, mechanical connecting unit, made separately from unit of adhering by suction ring with possibility of its travel along ring axis until connection by creation of contact, to unit of adhering by suction ring and provided with contact glass for giving eye surface required shape, means for pumping out for performing pumping out of first suction chamber, limited by unit of adhering by suction ring, connecting unit and eye surface, sensor means for detecting achievement by connecting unit and unit of adhering by suction ring of first relative position along said axis, in which any contact between tissue and surface adjacent to it is absent or already exists. Apparatus also includes control device, connected with sensor means and with means for pumping out, adjusted to ensuring initiation of pumping out first suction chamber as response to detection by sensor means achievement of said first relative position, in particular for ensuring contact between eye and adjacent to it contact glass surface, which gives it required profile, or for increasing zone of already existing contact.

EFFECT: application of the group of inventions will make it possible to reduce pressure surges and effect of compression, eliminate damage to eye epithelium due to absence of transverse efforts of displacement.

20 cl, 5 dwg

FIELD: medicine.

SUBSTANCE: invention relates to medicine, namely to maxillofacial surgery, and can be used in treatment of volume vascular and neuroplastic formations. Coagulation is performed with application of invasive impact by puncture of light-guide of neodymium laser with wavelength 1064 mcm into pathologically changed tissue. Coagulation is performed with power 18-25 W, pulse frequency 50 Hz until echogenicity in the area of impact increases and to skin temperature 55-60°C with further output of decomposition products by means of drainage. Desirable thickness of light-guide is 0.6 mm.

EFFECT: method makes it possible to carry out closed surgical operations, prevent toxic complications, exclude coarse cosmetic injuries.

2 ex

FIELD: medicine.

SUBSTANCE: group of inventions relates to medicine and medical equipment, to ophthalmological, in particular, refraction laser surgery. Apparatus for laser surgery contains source of laser beam, means for positioning beam, emitted by said source for spatial and time control of laser beam movement on operated eye, camera for formation of images of eye iris and pupil and connected to camera software programmable computer for control of beam positioning means in accordance with impact profile and adjusted to installation in the process of eye operation, on the basis of data about images, coming from camera, position of specified point on eye cornea and on coordination of impact profile position with determined position of said point on cornea. Apparatus also contains measuring device, providing computer with measurement results for determination of parameter, characterising depth of operated eye and corresponding to depth of anterior chamber and, if it seems desirable, to cornea thickness. Computer is adjusted to determination on the basis of data about images coming from camera of value of pupil centre displacement and on determination of specified point position on cornea depending on measured parameter, radius of eye rotation and determined value of displacement, characterising direction and amount of pupil centre displacement with respect to reference position of pupil centre. Method of laser surgery is realised with application of said apparatus and lies in the following: laser irradiation is directed at eye or inside eye in accordance with space-time sequence, determined by desirable impact profile, which is adjusted spatially relative to specified point of operated eye. After that, parameter, characterising depth of operated eye and corresponding to depth of anterior chamber and, if it seems desirable, cornea thickness, is measured, at least, one before beginning operation, and control programme for computer is generated.

EFFECT: application of the group of inventions will make it possible to ensure exact positioning of laser beam in the process of ophthalmological laser operation.

4 cl, 3 dwg

FIELD: medicine, otorhinolaryngological surgery.

SUBSTANCE: one should apply thin layer of "Solcoseryl" gel onto osseous facial walls of frontal and maxillary sinuses at the border with trepanation opening after removing pathological content out of them and before applying a transplant out of flat bone of human fetal cranial arch that exceeds the diameter of trepanation opening by 3-4 mm. Then, one should additionally fix the transplant by affecting with distal edge part of a light guide of semi-conductor laser "ATKUS-15" with contact-type technique at output power of laser radiation being 8 W at constant mode. The method enables to increase fixation density of allobrefobone to osseous walls of sinus along its whole diameter.

EFFECT: higher efficiency of fixation.

1 ex

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