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CN-122005071-A - Pulse light unhairing system based on spectrum conversion and control method thereof

CN122005071ACN 122005071 ACN122005071 ACN 122005071ACN-122005071-A

Abstract

The invention discloses a pulse light unhairing system based on spectrum conversion and a control method thereof, the system comprises a pump light source module, a spectrum conversion module, an image acquisition module and a processor. The system provided by the invention has the pixel-level accurate control capability, greatly improves the accuracy compared with the traditional IPL, and realizes pixel-level energy self-adaption, thereby supporting personalized treatment. The system also supports sliding continuous irradiation, can greatly shorten treatment time, has the advantages of high energy efficiency ratio, small ineffective irradiation area, low pain and the like, and can effectively reduce unnecessary thermal stimulation.

Inventors

  • CHEN ZIYI

Assignees

  • 壹万万(广州)科技有限公司

Dates

Publication Date
20260512
Application Date
20260324

Claims (14)

  1. 1. A pulsed light dehairing system based on spectral conversion, comprising: The system comprises a pumping light source module, a plurality of light emitting diodes and a control unit, wherein the pumping light source module is an array formed by arranging a plurality of independently controllable laser diodes; The spectrum conversion module is arranged in front of the light emitting surface of the pumping light source module, and is used for absorbing laser emitted by the laser diode and converting the laser into incoherent wide-spectrum pulse light in a spontaneous emission mode; The image acquisition module is used for acquiring skin images; And the processor is respectively connected with the image acquisition module and the pumping light source module and is used for generating control signals for controlling the independent on-off of lasers at corresponding positions in the laser diode array according to the hair follicle positions in the skin image so as to realize pixel-level accurate irradiation.
  2. 2. The pulsed light dehairing system based on spectral conversion according to claim 1 wherein an opaque isolation structure is provided inside the spectral conversion module, the opaque isolation structure separates the spectral conversion module into a plurality of independent conversion areas in one-to-one correspondence with the laser diode array for suppressing fluorescence lateral diffusion and maintaining pixel-level spatial accuracy.
  3. 3. The spectrally conversion-based pulsed light epilation system of claim 2, wherein the opaque isolation structure is one of: In the first mode, a metal grid groove penetrating through the whole thickness of the spectrum conversion module is filled with an opaque material; A second mode is that discrete fluorescent material dot arrays are formed on the transparent substrate through printing or photoetching technology, and the distance between the fluorescent material dot arrays is matched with the distance between the laser diode arrays; And in a third mode, the optical fiber bundle is formed by closely arranging a plurality of optical fibers, and the fiber core of each optical fiber is filled with fluorescent materials or quantum dot materials.
  4. 4. The spectral conversion based pulsed light dehairing system according to claim 1 further comprising a skin tone sensor and a skin temperature sensor, the processor being connected to the skin tone sensor and the skin temperature sensor, respectively, for automatically limiting maximum output energy density based on the Fitzpatrick skin tone level determined by the skin tone sensor and automatically reducing energy or stopping illumination when the temperature exceeds a preset threshold based on the skin temperature sensor readings.
  5. 5. The pulse light unhairing system based on spectrum conversion according to claim 1, wherein the spectrum conversion module is of a detachable and replaceable modularized structure and is installed in a treatment head in a magnetic attraction or fastening mode, different modules correspond to different fluorescent material formulas and cut-off filter combinations, and NFC labels are integrated in the modules and used for storing module types and usage count information.
  6. 6. The spectrally conversion-based pulsed light dehairing system according to claim 1 wherein the spectral conversion module is a fluorescent conversion layer or a quantum dot conversion layer, the fluorescent conversion layer comprising at least two phosphors of different emission wavelengths, the quantum dot conversion layer comprising at least two semiconductor quantum dots of different particle sizes such that the output spectrum covers the 500-1200nm range.
  7. 7. The spectrally conversion-based pulsed optical dehairing system according to claim 6 wherein the semiconductor quantum dots in the quantum dot conversion layer are InP-based or CuInS 2 -based cadmium-free quantum dots.
  8. 8. The spectral conversion based pulsed light dehairing system according to claim 1 wherein the output light of the spectral conversion module is incoherent light having a spectral half-height greater than 200nm and being emitted in a pulsed manner.
  9. 9. The spectral conversion based pulsed light dehairing system according to claim 1 wherein the control signal is a lighting vector corresponding to the laser diode array, each element in the lighting vector being independently set to zero or a specific energy parameter, the energy parameter being determined according to the diameter or number of hair follicles in the corresponding pixel area to achieve energy adaptive control.
  10. 10. The spectrally transformed pulsed light epilation system of claim 1, further comprising an inertial measurement unit for detecting in real time a state of motion of the treatment head, the processor updating the control signal and adjusting the pulse emission frequency in real time in accordance with the state of motion to support a sliding continuous irradiation mode.
  11. 11. The pulse unhairing system based on spectrum conversion according to claim 1, wherein a micro lens array is further arranged between the pump light source module and the spectrum conversion module, the micro lens array corresponds to the laser diodes one by one and is used for projecting the divergent light beams of each laser to the corresponding area on the spectrum conversion module after collimation so as to reduce optical crosstalk.
  12. 12. The pulsed light dehairing system based on spectrum conversion according to claim 1, wherein an ultraviolet cut-off filter and a heat conduction window are sequentially arranged behind the spectrum conversion module, the ultraviolet cut-off filter is used for filtering ultraviolet light, and the heat conduction window is used for transmitting therapeutic light and conducting heat.
  13. 13. A method of spectral conversion based pulsed light dehairing applied to a spectral conversion based pulsed light dehairing system according to any of claims 1-12, characterized by the steps of: Collecting a skin image; Identifying hair follicle coordinates from the skin image; Mapping the hair follicle coordinates to a pixel grid of a laser diode array, and generating a control signal for controlling the on-off of each laser independently; selectively driving the corresponding lasers to emit pumping light pulses according to the control signals; The pumping light pulse excites the spectrum conversion module, converts the pumping light pulse into incoherent broad spectrum pulse light and outputs the incoherent broad spectrum pulse light to the surface of the skin.
  14. 14. The spectral conversion based pulsed light dehairing method according to claim 13 wherein the energy parameter in the control signal is computationally determined according to at least one of the diameter, number of hair follicles in the corresponding pixel area and the type of skin tone of the user.

Description

Pulse light unhairing system based on spectrum conversion and control method thereof Technical Field The invention relates to the technical field of photoelectric cosmetology, in particular to a pulse light unhairing system based on spectrum conversion and a control method thereof. Background Two main current light sources exist in the field of optical dehairing, namely strong pulse light (IPL) is adopted, a xenon flash lamp tube is adopted to generate wide-spectrum incoherent pulse light, the advantages of wide spectrum coverage of various target color bases are good in safety, supervision and classification are low, and the defects of large light spots, incapability of accurately positioning single hair follicle and low energy utilization rate are overcome. The second type is laser, which adopts a semiconductor laser to generate single-wavelength coherent light, and has the advantages of concentrated energy, accurate positioning through a vibrating mirror, poor adaptability of single wavelength to different complexion or hair colors, high supervision classification level, long registration period and high cost. Therefore, in the prior art, there is a contradiction between the precision and the supervision compliance, that is, the laser is required for precise dehairing, but the precise striking cannot be realized by the IPL of low supervision type. At present, no solution exists in the industry, and the accuracy and IPL compliance can be simultaneously considered. Disclosure of Invention The invention aims to provide a pulse light unhairing system based on spectrum conversion and a control method thereof, which solve the problems in the background technology. In order to achieve the above purpose, the invention adopts the following technical scheme: A pulsed light dehairing system based on spectral conversion comprising: The system comprises a pumping light source module, a plurality of light emitting diodes and a control unit, wherein the pumping light source module is an array formed by arranging a plurality of independently controllable laser diodes; The spectrum conversion module is arranged in front of the light emitting surface of the pumping light source module, and is used for absorbing laser emitted by the laser diode and converting the laser into incoherent wide-spectrum pulse light in a spontaneous emission mode; The image acquisition module is used for acquiring skin images; And the processor is respectively connected with the image acquisition module and the pumping light source module and is used for generating control signals for controlling the independent on-off of lasers at corresponding positions in the laser diode array according to the hair follicle positions in the skin image so as to realize pixel-level accurate irradiation. Further, an opaque isolation structure is arranged in the spectrum conversion module, the spectrum conversion module is divided into a plurality of independent conversion areas corresponding to the laser diode arrays one by the opaque isolation structure, and the independent conversion areas are used for inhibiting fluorescence from transversely diffusing and keeping pixel-level space accuracy. Further, the opaque isolation structure is one of the following ways: In the first mode, a metal grid groove penetrating through the whole thickness of the spectrum conversion module is filled with an opaque material; A second mode is that discrete fluorescent material dot arrays are formed on the transparent substrate through printing or photoetching technology, and the distance between the fluorescent material dot arrays is matched with the distance between the laser diode arrays; And in a third mode, the optical fiber bundle is formed by closely arranging a plurality of optical fibers, and the fiber core of each optical fiber is filled with fluorescent materials or quantum dot materials. Further, the skin color sensor and the skin temperature sensor are connected with the processor, and the processor is used for automatically limiting the maximum output energy density according to the Fitzpatrick skin color grade determined by the skin color sensor and automatically reducing the energy or stopping irradiation when the temperature exceeds a preset threshold according to the reading of the skin temperature sensor. Furthermore, the spectrum conversion module is of a detachable and replaceable modularized structure and is arranged in the treatment head in a magnetic attraction or buckling mode, different modules correspond to different fluorescent material formulas and cut-off filter combinations, and NFC labels are integrated in the modules and are used for storing module types and use count information. Further, the spectrum conversion module is a fluorescent conversion layer or a quantum dot conversion layer, the fluorescent conversion layer comprises at least two kinds of fluorescent powder with different emission wavelengths, and the quantum dot conversion layer compr