CN216534237U

CN216534237U - White hair cutting device

Info

Publication number: CN216534237U
Application number: CN202121698627.0U
Authority: CN
Inventors: 季建松
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-07-26
Filing date: 2021-07-26
Publication date: 2022-05-17
Anticipated expiration: 2031-07-26

Abstract

The utility model provides a white hair cutting device, comprising: the laser device comprises an excitation generator, a micro vibrating mirror, a focusing lens, a beam splitting lens, a light intensity detection unit and a processor, wherein the laser generator emits laser under the control of the processor; the micro galvanometer reflects laser under the control of the processor to carry out laser scanning on hair or cut off white hair; the focusing lens is arranged at one side end part of the device and focuses laser within a specified focal length range; the beam splitting lens is arranged in a light path between the laser generator and the micro vibrating mirror, collimates laser, transmits the laser emitted from the laser generator to the micro vibrating mirror, and deflects the laser reflected from a head emitting end; the light intensity detection unit samples the intensity of the laser reflected from the originating end and sends a sampling signal to the processor. The utility model can quickly judge and cut off the white hair, has low operation requirement and short consumed time.

Description

White hair cutting device

Technical Field

The present invention relates to a white hair cutting device for determining and cutting white hair using a laser.

Background

The increase of white hair is a process which is inevitably experienced in the natural growth process of human beings, particularly for people with black hair, the white hair is particularly obvious, and more white hair can generate negative influence on the image and the beauty. The elimination of white hair is a common need for people to seek aesthetic appearance.

The existing mainstream technology for removing white hair is hair dyeing, medicine and the like. Hair dyeing has obvious effects, but also causes changes in hair quality and concerns about adverse effects of chemicals on human health. The existing medicines have no quick and obvious effect on reducing the white hair.

There are also some techniques for physically removing the white hair manually or automatically, but these techniques have problems of being cumbersome, slow in operation, and difficult to perform practically.

SUMMERY OF THE UTILITY MODEL

The present invention has been made to solve the problems of the prior art, and an object of the present invention is to provide a white hair cutting device for determining and cutting white hair using a laser, which can rapidly determine white hair using a laser and precisely cut white hair.

The present invention provides a white hair cutting device, including: an excitation generator, a micro vibrating mirror, a focusing lens, a beam splitting lens, a light intensity detection unit and a processor,

the laser generator is connected with the processor and emits laser under the control of the processor;

the micro galvanometer is connected with the processor and reflects the laser under the control of the processor so as to carry out laser scanning on hair or cut off white hair;

the focusing lens is arranged at one end part of the white hair cutting device and focuses the laser within a specified focal length range;

the beam splitting lens is arranged in a light path between the laser generator and the micro vibrating mirror, collimates the laser, transmits the laser emitted from the laser generator to the micro vibrating mirror, and deflects the laser reflected from a head end;

the light intensity detection unit is arranged on one side of the light splitting lens and connected with the processor, samples the intensity of the laser reflected from the head emitting end and sends a sampling signal to the processor;

the processor is respectively connected with the laser generator, the micro vibrating mirror and the light intensity detection unit.

Preferably, the laser generator emits lasers of different powers under the control of the processor, the lasers including a laser of a first power and a laser of a second power, the first power being less than the second power.

Preferably, the laser generator emits laser light of a first power while scanning the head with the laser light; the laser generator emits laser light of a second power when the white light is cut off.

Preferably, the sampling signal is a light intensity value of the reflected laser light.

Preferably, the processor further comprises a comparator, wherein the comparator compares the light intensity value with a specified value, and when the light intensity value exceeds the specified value, the white hair is judged, otherwise, the black hair is judged.

Preferably, the micro galvanometer is configured to feed back deflection angle information to the processor in real time.

Preferably, in the case of determining white hair, the processor stores the real-time deflection angle of the micro galvanometer as white hair position information.

Preferably, a power supply for supplying power to the entire device is also included.

Preferably, a housing is also included which houses the various components of the device

The utility model has the following beneficial effects:

the device of the utility model can physically cut off white hair which affects the beauty, does not need complicated hair dyeing, and does not have adverse effect on the health. The device can rapidly judge and cut off the white hair, has low operation requirement and short time consumption, and can effectively realize the purpose of physically, rapidly and accurately removing the white hair.

Drawings

Fig. 1 is a schematic plan view of a white hair cutting device according to an embodiment of the present invention.

Fig. 2 is a schematic perspective view of a white hair cutting device according to an embodiment of the present invention.

The names of the components represented by the various reference numbers in the drawings of the specification are as follows: 1-a housing; 2-a laser generator; 3-a micro galvanometer; 4-a focusing lens; 5-a beam splitting lens; 6-a light intensity detection unit; 7-a processor; 8-battery.

Detailed Description

The embodiments of the present invention will be described below with reference to the drawings attached to the specification. It should be noted that the embodiments mentioned in the present description are not exhaustive and do not represent the only embodiments of the present invention. The following examples are given for the purpose of clearly illustrating the utility model and are not intended to limit the embodiments thereof. It will be apparent to those skilled in the art that various changes and modifications can be made in the embodiment without departing from the spirit and scope of the utility model, and it is intended to cover all such changes and modifications as fall within the true spirit and scope of the utility model.

The device is mainly based on that the absorptivity of the laser light of the black hair and the absorptivity of the laser light of the white hair are different. Black hair has a much greater absorption of laser light than white hair. Due to the different absorption rates, the reflectivity of white hair to laser light is also much higher than that of black hair. Therefore, it is possible to determine whether the hair is white or black by detecting the change in the intensity of the laser beam returned from the hair end, to obtain the position information of the white hair when the white hair is determined, and to cut the white hair with the high-power laser beam. The technical scheme of the device is provided based on the conception.

Fig. 1 is a schematic plan view of a white hair cutting device according to an embodiment of the present invention. Fig. 2 is a schematic perspective view of a white hair cutting device according to an embodiment of the present invention. As shown in fig. 1 to 2, a device for cutting white hair according to the present invention includes: the device comprises a shell 1, a laser generator 2, a micro vibrating mirror 3, a focusing lens 4, a beam splitting lens 5, a light intensity detection unit 6, a processor 7 and a battery 8.

The housing 1 is intended to accommodate the various components of the device according to the utility model. In the present embodiment, the shape of the housing 1 may be a rectangular parallelepiped or a shape similar to a rectangular parallelepiped. Of course, other shapes can be designed according to the requirement.

The laser generator 2 is connected with the processor 7, and emits laser to the micro vibrating mirror 3 under the control of the processor 7. The laser generator 2 may emit laser light of different powers under the control of the processor 7. When the laser scanning of the hair is required for judging whether the hair is white or black, the laser generated by the laser generator 2 is a first power laser, i.e., a weak power laser, which does not have any adverse effect on the hair or the human body. In some embodiments, the power of the low power laser may be in the range of 1-10mW, for example. When the white light needs to be cut off by laser, the laser emitted by the laser generator 2 is the laser with the second power, namely the high-power laser, and the white light is cut off instantly by the thermal action of the high-power laser. The power of the high power laser may be in the range of 10-20W, for example.

The micro galvanometer 3 is connected with the processor 7, and reflects the laser to scan or cut the hair under the control of the processor 7. The vibrating lens of the micro vibrating mirror 3 is driven by the motor to deflect around the shaft at a high speed in a reciprocating way, so that the aim of changing the path of the laser beam is fulfilled, and the laser scanning of the hair is realized. The micro-galvanometer 3 may be a commercially available micro-galvanometer that meets the requirements. In general, the principle of operation of the micro galvanometer is: by inputting a position control signal, for example, to a processor (CPU), the swing motor (galvanometer plate) swings by a certain angle in accordance with a conversion ratio of a certain voltage to an angle. The micro-galvanometer 3 may be arranged to send deflection angle data to the processor 7 in real time.

The focusing lens 4 focuses the laser light reflected by the micro galvanometer 3 within a predetermined focal length range. Preferably, the focusing lens 4 is arranged at the end of the housing 1 on the side close to the hair, i.e. at the position of the housing 1 close to the hair during operation of the device according to the utility model. The prescribed focal length range may be, for example, 1-2 mm. The transmitted laser can be focused in a narrow focal length range through the focusing lens 4, so that the size of a laser spot can be controlled in a certain range, and the accuracy of laser scanning is improved.

The beam splitting lens 5 is disposed in an optical path between the laser generator 2 and the micro oscillating mirror 3, and is configured to collimate laser light, transmit laser light emitted from the laser generator 2 to the micro oscillating mirror 3, and deflect laser light reflected from a head end. Here, the laser generated by the laser generator 2 is transmitted through the beam splitting lens 5 to the micro oscillating mirror 3, and is reflected by the micro oscillating mirror 3 to the hair end, and the beam path is a scanning beam path. The laser reflected from the hair end is reflected to the beam splitting lens 5 through the micro vibrating mirror 3 and is reflected to the light intensity detection unit by the beam splitting lens 5, and the light beam path is a light intensity detection light beam path.

The light intensity detection unit 6 is disposed on one side of the spectroscopic lens 5 and connected to the processor 7, and samples the intensity of the laser light reflected from the head end and sends a sampling signal to the processor 7. As described above, since the absorption rates of the laser light are different between the black hair and the white hair, the absorption rate of the laser light is much greater for the black hair than for the white hair. Further, due to the difference in absorption, the reflectance of white hair to laser light is also much higher than that of black hair. The light intensity range of the laser reflected by the white hair is about 5 to 10 times of the light intensity range of the laser reflected by the black hair. Therefore, by detecting the change in the intensity of the laser light returned from the hair end, it is possible to determine whether the hair is white or black. The light intensity detection unit 6 receives the laser light reflected from the head origin and detects the intensity change thereof, obtains a sampling signal, and sends the sampling signal to the processor 7. Specifically, the sampling signal is a light intensity value.

The processor 7 is respectively connected with the laser generator 2, the micro vibrating mirror 3 and the light intensity detection unit 6. The processor 7 receives the sampling signal from the light intensity detection unit. When the white hair is determined by the sampling signal, the processor 7 stores the deflection angle of the micro galvanometer at that time in the memory. The deflection angle is the white hair position information. In a preferred embodiment, the processor 7 comprises a comparator for comparing the light intensity value with a defined value, and when the light intensity value exceeds the defined value, it is determined as white hair, otherwise it is determined as black hair. At the end of a scan cycle, the processor 7 may store more than one deflection angle, which may be noted as array a (deflection angle 1, deflection angle 2, deflection angle 3 … …). In a preferred embodiment, multiple scans, for example, 3 to 5 scans, may be set, and by repeating the scans for multiple times, the precise determination of the white hair position may be achieved.

After obtaining the white light position information, the micro galvanometer 3 is deflected to the white light position under the control of the processor 7, and the laser generator 2 emits high-power laser light to cut off the white light at the position under the control of the processor 7. Specifically, the processor 7 sends a position control signal to the micro galvanometer 3, so that the micro galvanometer 3 deflects to a plurality of deflection angles recorded in the array a, respectively. After the micro galvanometer 3 deflects to the target position, the laser generator 2 emits high-power laser under the control of the processor 7 to cut off white hair at the target position, and the white hair can be cut off instantly under the thermal action of the high-power laser. Therefore, the micro galvanometer 3 is sequentially deflected to the target positions, and the white hairs at the target positions can be sequentially cut off.

The battery 8 is the power source of the device of the present invention and is used to supply power to the entire device.

The white hair cutting device can complete the white hair scanning and cutting process quickly in a short time. Moreover, the white hair scanning and cutting process can be set to be continuously circulated, namely, after one white hair scanning and cutting process is finished, the next white hair scanning and cutting process is immediately started, and the process is continuously repeated. All the user needs to do is move at the position with the white hair, and the white hair removal of the whole hair area can be quickly realized.

It will be apparent to those skilled in the art that the above embodiments are merely illustrative of the present invention and are not to be construed as limiting the present invention, and that changes and modifications to the above described embodiments may be made within the spirit and scope of the present invention as defined in the appended claims.

Claims

1. A white hair cutting device, comprising: a laser generator, a micro vibrating mirror, a focusing lens, a beam splitting lens, a light intensity detection unit and a processor,

the light intensity detection unit is arranged on one side of the light splitting lens and connected with the processor, samples the intensity of the laser reflected by the originating end, and sends a sampling signal to the processor.

2. The white light cutoff device according to claim 1, wherein the laser generator emits lasers of different powers under control of the processor, the lasers including a first power of laser and a second power of laser, the first power being less than the second power.

3. The white hair cutting device according to claim 2, wherein the laser generator emits the laser light of the first power while the laser light is scanned for the hair; the laser generator emits the laser light of the second power when the white light is cut off.

4. The white hair cutting device according to claim 3, wherein the sampling signal is a light intensity value of the reflected laser light.

5. The white hair cutting device according to claim 4, wherein the processor further comprises a comparator that compares the light intensity value with a prescribed value, and determines white hair when the light intensity value exceeds the prescribed value, and determines black hair otherwise.

6. The white hair cutting device according to claim 5, wherein the micro-galvanometer is configured to feed back deflection angle information to the processor in real time.

7. The white hair cutting device according to claim 6, wherein the processor stores a real-time deflection angle of the micro galvanometer as white hair position information in a case where it is determined that white hair is present.

8. The white hair cutting apparatus according to claim 1, further comprising a power source for supplying electric power to the entire apparatus.

9. The white hair cutting apparatus according to claim 1, further comprising a housing which houses respective components of the apparatus.