CN114052902A

CN114052902A - Speckle removing method, focal array distributed laser speckle removing module and speckle removing instrument

Info

Publication number: CN114052902A
Application number: CN202111602707.6A
Authority: CN
Inventors: 刘思存; 罗红波
Original assignee: Shenzhen Meilaiya Intelligent Technology Co ltd
Current assignee: Shenzhen Meilaiya Intelligent Technology Co ltd
Priority date: 2021-12-24
Filing date: 2021-12-24
Publication date: 2022-02-18

Abstract

The laser speckle removing module comprises a support, at least one vertical cavity surface emitting laser and a condensing lens, wherein the vertical cavity surface emitting laser is arranged on the inner bottom surface of the support, the light emitting direction of the vertical cavity surface emitting laser faces the front of the support, the condensing lens is arranged in front of the vertical cavity surface emitting laser, and a plurality of focusing micro mirrors used for focusing laser into a point are arranged on one side, close to the vertical cavity surface emitting laser, of the condensing lens. The invention has the advantages of compact structure and small volume.

Description

Speckle removing method, focal array distributed laser speckle removing module and speckle removing instrument

Technical Field

The invention relates to a speckle removing method, a focal array distributed laser speckle removing module and a speckle removing instrument.

Background

People who like beauty, especially young women, want to keep youthful and beautiful. If spots such as freckles or chloasma exist on the face of a young female, most people want to remove the spots.

The existing spot-removing methods are divided into an internal spot-removing method and an external spot-removing method, wherein the internal spot-removing method mainly adopts edible medicines or food to improve the metabolism of a human body to remove the speckle; the external speckle removing method mainly adopts a certain technical means to directly remove speckle marks. The laser speckle removing effect is obvious. The laser spot removing method is that laser energy is utilized to generate high-energy and accurately focused monochromatic light, the laser spot removing method has certain penetrating power, and when the laser spot removing method acts on human tissues, high heat can be generated locally. The laser can remove the genetic freckle, so that the genetic freckle can effectively penetrate through the skin surface, pigment particles can be instantly broken into tiny fragments, and a target tissue is removed or damaged, thereby achieving the effect of effectively removing the freckle.

However, the existing laser spot removal is generally large in size and can be realized only by professional operation, so that the operation can be performed only when the patient arrives at a hospital, which is not only expensive, but also takes a lot of time.

Disclosure of Invention

In order to solve the above problems, the present invention provides a safe and reliable speckle removing method, a compact and small-sized focal-array distributed laser speckle removing module, and a handheld speckle removing apparatus that can be operated by non-professional people.

The technical scheme of the invention is as follows: provides a method for removing speckles, which comprises the following steps,

s1, detecting the color depth of the blotches to be removed;

s2, determining the light sensation intensity value of the depth of the blotch according to the detection result of the step S1;

s3, setting the laser to control the output energy according to the light sensation intensity value of the speckle note determined in the step S2, wherein the smaller the light sensation intensity value is, the larger the output energy of the laser is;

s4, aligning the laser output window to the speckle mark to be removed;

and S5, turning on the laser to output laser, so that the laser forms a plurality of shift-removing points which are arranged on the spot mark in a matrix and are separated by a preset distance.

As an improvement of the present invention, step S1 is to detect the color depth by using a light emitting element and a light sensing element included in the proximity ambient light sensor, the light emitting element emits a light signal to the speckle, after a part of the light signal is reflected, the light sensing element reads the reflected light signal, the signal is amplified by an amplifier, and the signal is converted into a digital signal by an analog-digital converter, the light sensing intensity of the speckle is known by a subsequent circuit according to an algorithm, and the color depth is known according to the light sensing intensity.

As an improvement of the present invention, in S2, the smaller the light sensation intensity, the lighter the color is, and the linear relationship between the light sensation intensity and the color shade is.

As an improvement of the present invention, in S3, the light sensation intensity value obtained by controlling the output energy of the laser according to the light sensation intensity value is input to the main control MCU, and the single chip microcomputer controls the intensity of light emission by adjusting the pulse output time of the one-way thyristor or IGBT according to the instruction of the main control MCU.

As an improvement of the present invention, the work flow of the main control MCU is as follows:

s21, starting;

s22, reading the light intensity value;

s23, comparing whether the read light sensation intensity value falls within the range of the light sensation intensity value in the set interval, if so, entering the step S4, and if not, returning to the step S2;

s24, configuring corresponding pulse output time according to the light intensity value;

s25, controlling the electronic switching tube to be conducted according to the configured output time;

and S26, ending.

The invention also provides a focal array distributed laser speckle removing module which comprises a support, at least one vertical cavity surface emitting laser and a condensing lens, wherein the vertical cavity surface emitting laser is arranged on the inner bottom surface of the support, the light emitting direction of the vertical cavity surface emitting laser faces to the front of the support, the condensing lens is arranged in front of the vertical cavity surface emitting laser, and one side of the condensing lens, which is close to the vertical cavity surface emitting laser, is provided with a plurality of focusing micro mirrors for focusing laser into points.

As an improvement to the present invention, the VCSEL has one light exit hole or a plurality of light exit holes.

As an improvement to the present invention, the at least one vertical cavity surface emitting laser is composed of a plurality of vertical cavity surface emitting lasers arranged in a matrix, and the light emitting directions of all the vertical cavity surface emitting lasers face the condensing lens and irradiate on the condensing lens.

As an improvement to the present invention, the present invention further comprises a skin detection mechanism, the skin detection mechanism comprises an ambient light and proximity sensor and a light guide pillar, the ambient light and proximity sensor is arranged on the circuit board and is controlled by a controller of the circuit board to provide power, the lower end of the light guide pillar is abutted against the ambient light and proximity sensor, and the lower end of the light guide pillar and the ambient light and proximity sensor are sleeved by a black light shield; the upper end of the light guide column is arranged on the periphery of the outer side of the vertical cavity surface emitting laser.

As an improvement to the present invention, the present invention further includes a heat sink disposed on a side of the support away from the vertical cavity surface emitting laser.

As an improvement to the present invention, the heat sink is an air-cooled heat sink.

As an improvement to the invention, the support is an aluminum nitride ceramic plate.

As an improvement of the invention, a protective lens is arranged in front of the condenser lens and is arranged on a protective lens bracket.

The invention also provides a speckle removing instrument, which comprises a main body of the speckle removing instrument, wherein the main body of the speckle removing instrument comprises the focus array distributed laser speckle removing module.

The invention adopts a structure which comprises a support, at least one vertical cavity surface emitting laser and a condensing lens, wherein the vertical cavity surface emitting laser is arranged on the inner bottom surface of the support, the light emitting direction of the vertical cavity surface emitting laser faces the front of the support, the condensing lens is arranged in front of the vertical cavity surface emitting laser, and one side of the condensing lens, which is close to the vertical cavity surface emitting laser, is provided with a plurality of focusing micro mirrors for focusing laser into points, so the invention has the advantages of compact structure and small volume. The laser speckle removing instrument made by matching the laser speckle removing module with the handle has the advantage that the handheld laser speckle removing instrument can be operated by non-professional people.

Drawings

FIG. 1 is a block diagram of an embodiment of the method of the present invention.

Fig. 2 is a schematic block structure diagram of the working principle of the master MCU in the embodiment shown in fig. 1.

Fig. 3 is a schematic diagram of a schematic structure of a master MCU circuit in the embodiment shown in fig. 1.

FIG. 4 is a schematic cross-sectional view illustrating a laser speckle removing module according to a first embodiment of the present invention.

Fig. 5 is a front view of the condenser lens of fig. 4.

FIG. 6 is a schematic cross-sectional view illustrating a laser speckle removing module according to a second embodiment of the present invention.

Fig. 7 is a schematic perspective view of the embodiment shown in fig. 6.

FIG. 8 is a schematic cross-sectional view illustrating a laser speckle removing module according to a third embodiment of the present invention.

FIG. 9 is an exploded view of a laser speckle removing apparatus according to a first embodiment of the present invention.

Fig. 10 is a perspective view of the assembled structure of fig. 9.

FIG. 11 is an exploded view of a laser speckle removing apparatus according to a second embodiment of the present invention.

Fig. 12 is a schematic front view of the embodiment of fig. 11.

Detailed Description

Referring to fig. 1 to 3, fig. 1 to 3 disclose a speckle removing method, which includes the following steps,

s1, detecting the color depth of the blotches to be removed;

specifically, the Ambient Light and Proximity Sensor (Proximity with Ambient Light Sensor) is used as a photosensitive element (a Sensor of type STK3311-X may be used), and the Ambient Light and Proximity Sensor includes a Light emitting element (Emitter) and a photosensitive element, and emits a Light signal to a spot through the Light emitting element, after a part of the Light signal is reflected, the photosensitive element reads the reflected Light signal, and amplifies the signal through an amplifier and an analog-digital converter and converts the signal into a digital signal, and the photosensitive intensity is obtained by a subsequent circuit, and the operation principle is as shown in fig. 3.

specifically, by means of the IIC communication technology of the MCU, amplified digital signals in the light sensation sensor are read, an environment light voltage data curve table and a proximity distance voltage data curve table which can be identified by the single chip microcomputer are respectively established, and the current skin light sensation intensity value can be known by inquiring parameters in the curve table according to light sensation data read by the single chip microcomputer each time.

specifically, through the obtained light sensation intensity value, the main control MCU singlechip adjusts the pulse output time of the one-way thyristor or the IGBT to control the light emitting intensity, the smaller the light sensation intensity value is, the larger the laser output energy is, and otherwise, the smaller the laser output energy is;

s4, aligning the laser output window to the speckle mark to be removed;

and S5, turning on the laser to output laser, so that the laser forms a plurality of shift-removing points which are arranged on the spot mark in a matrix and are separated by a preset distance. The speckle removing point is formed by focusing laser by a plurality of focusing micromirrors on a condensing lens.

Preferably, in S3, the light sensation intensity value obtained by controlling the output energy of the laser according to the light sensation intensity value is input to the main control MCU, and the single chip controls the intensity of light emission by adjusting the pulse output time of the one-way thyristor or the IGBT according to the instruction of the main control MCU.

Referring to fig. 2, the work flow of the master MCU is as follows:

s21, starting;

s22, reading the light intensity value;

s24, configuring corresponding pulse output time by the main control MCU according to the light sensation intensity value;

and S26, ending.

Referring to fig. 4 and 5, fig. 4 and 5 disclose a first embodiment of a focal array distributed laser speckle removing module, which includes a support 1, a vertical cavity surface emitting laser 2 and a condensing lens 3, wherein the vertical cavity surface emitting laser 2 is disposed on an inner bottom surface of the support 1, a light emitting direction of the vertical cavity surface emitting laser 2 faces to a front of the support 1, the condensing lens 3 is disposed in front of the vertical cavity surface emitting laser 2, and a plurality of focusing micromirrors 31 for focusing laser light into a spot are disposed on a side of the condensing lens 3 close to the vertical cavity surface emitting laser 2.

In this embodiment, the vertical cavity surface emitting laser 2 has one light exit hole, and of course, the vertical cavity surface emitting laser 2 may also be designed to have a structure with a plurality of light exit holes as required, such as light exit holes arranged in a matrix of 5X5 or 6X6, so as to improve the light intensity of the laser.

In this embodiment, the present invention may further include a heat sink 5, where the heat sink 5 is disposed on a surface of the support 1 away from the vertical cavity surface emitting laser 2 (not shown). The radiator 5 can be an air-cooled radiator, so that the handheld laser speckle removing instrument is favorably manufactured.

Preferably, the support 1 may be an aluminum nitride ceramic sheet.

Referring to fig. 6 and 7, fig. 6 and 7 disclose a second embodiment of a focal array distributed laser speckle removing module, and the embodiment shown in fig. 6 and 7 has the same general structure as the embodiment shown in fig. 4 and 5, except that the vcsel 2 is composed of a plurality of vcsels arranged in a matrix, for example, a plurality of rows (two rows, but not limited to two rows, are shown in the figure), each row of vcsels 2 forms a matrix vcsel array, and the light emitting directions 21 of all vcsels 2 face the condenser lens 3 and irradiate on the condenser lens 3; a plurality of focusing micromirrors 31 for focusing the laser light into a spot are provided on the side of the condensing lens 3 close to the vcsel 2.

Of course, in this embodiment, each of the vertical cavity surface emitting lasers 2 may be a single light emitting hole or a multiple light emitting hole.

Preferably, the support 1 may be an aluminum nitride ceramic sheet.

In order to enhance the cooling of the condenser lens 3, a cooling structure 32 may also be provided on the side of the condenser lens 3, said cooling structure 32 including, but not limited to, an electric cooling sheet.

Referring to fig. 8, fig. 8 is a schematic cross-sectional view illustrating a laser speckle removing module according to a third embodiment of the present invention. The embodiment shown in fig. 8 is substantially the same as the embodiment shown in fig. 4 and 5, except that the embodiment further comprises a skin detection mechanism 4, the skin detection mechanism 4 comprises an ambient light and proximity sensor 41 and a light guide column 42, the ambient light and proximity sensor 41 is arranged on a circuit board 43, and is controlled and powered by a controller of the circuit board 43, the lower end of the light guide column 42 is abutted against the ambient light and proximity sensor 41, and the lower end of the light guide column 42 and the ambient light and proximity sensor 41 are sleeved by a black light shield 44, so as to prevent the ambient light from interfering with the ambient light and proximity sensor 41; the upper end of the light guide 42 (i.e., the light exit window 45) is disposed on the periphery of the outside of the vcsel 2. In this embodiment, the black light shield 44 is used for preventing the ambient light and the near-contact sensor from being interfered by other LED lamps on the main board, so as to detect more accurately and position the light guide column 42.

The ambient light and proximity sensor 41 includes a light emitting element and a light sensing element, and emits a low energy light signal (like the light signal emitted by the LED) to the spot, the low energy light signal is transmitted to the light exit window 45 by the light guiding pillar 42, the spot absorbs a part of the light signal, a part of the light signal is reflected back, the light sensing element reads the reflected light signal, the signal is amplified by the amplifier and the analog-digital converter, and is converted into a digital signal, and the light sensing intensity is obtained by the rear-stage circuit.

Preferably, a protective lens 6 is further disposed in front of the condensing lens 3, the protective lens 6 is made of quartz glass, and is arranged on the protective lens support 61 for protecting the vertical cavity surface emitting laser 2 from being interfered by foreign dust and preventing from being burned by polishing.

In this embodiment, each of the vertical cavity surface emitting lasers 2 may have a single light emitting hole or a plurality of light emitting holes.

Preferably, the support 1 may be an aluminum nitride ceramic sheet.

Referring to fig. 9 and 10, fig. 9 and 10 disclose a first embodiment of a laser speckle removing apparatus, which includes a handle 10, a speckle removing apparatus main body 20 is disposed in the handle 10, and the speckle removing apparatus main body 20 includes the above-mentioned focal-array distributed laser speckle removing module.

The speckle removing instrument further comprises a speckle removing positioning mechanism 30 for determining the speckle removing position, in the embodiment, the speckle removing positioning mechanism 30 comprises a connector 301 detachably connected with the head 101 of the handle 10, and a positioning ring 302 with a diameter smaller than that of the connector 301, wherein a plurality of connecting rods 303 are arranged between the connector 301 and the positioning ring 302, when the speckle removing instrument is used, the positioning ring 302 is tightly attached to the speckle removing instrument, the laser is turned on, and the laser is emitted from the light emitting hole 201 and acts on the skin of a human body.

In this embodiment, the light exit holes 201, the positioning rings 302 and the light exit windows 45 may be in regular geometric shapes, such as circles, rectangles, triangles, prisms, etc.

Referring to fig. 11 and 12, fig. 11 and 12 show a second embodiment of a laser speckle removing apparatus, which includes a handle 10, a main body 20 of the speckle removing apparatus is disposed in the handle 10, and the main body 20 of the speckle removing apparatus includes the above-mentioned focal-array distributed laser speckle removing module.

The speckle removing instrument further comprises a speckle removing and positioning mechanism 30 for determining a speckle removing position, in this embodiment, the speckle removing and positioning mechanism 30 comprises positioning light-emitting holes 304 located on two sides of the light-emitting hole 201, and light emitted from the positioning light-emitting holes 304 is emitted by two LED lamps located on the circuit board.

When the device is used, the position of the spot mark can be determined only by irradiating the light emitted from the positioning light-emitting hole 304 to the two sides of the spot mark.

In this embodiment, the light exit holes 201 and the light exit window 45 may be in a regular geometric shape, such as a circle, a rectangle, a triangle, a prism, etc.

Claims

1. a method for removing spots, is characterized in that: comprise the steps,

S1. Detect the color depth of the spots that need to be removed;

S2, according to the result of step S1 detection, determine the light intensity value of the spot mark depth;

S3. Set the size of the laser control output energy according to the light intensity value of the spot mark determined in step S2. The smaller the light intensity value, the greater the laser output energy;

S4. Align the laser output window with the spot mark that needs to be removed;

S5, turn on the laser to output the laser, so that the laser forms a number of shift points separated by a predetermined distance in a matrix on the spot mark.

2. The method for removing spots according to claim 1 is characterized in that: the step S1 is to carry out color depth detection in the following manner, using a light-emitting element and a photosensitive element included in the proximity ambient light sensor, through the The light-emitting element emits a light signal to the spot mark, and after part of the light signal is reflected back, the light-sensitive element reads the reflected light signal, and then amplifies the signal through an amplifier, and uses an analog-to-digital converter to convert the signal into a digital signal. The post-stage circuit obtains the light intensity of the spot mark according to the algorithm, and the color depth is obtained according to the light intensity.

3 . The method for removing spots according to claim 2 , wherein in S2 , the smaller the light intensity is, the lighter the color is, and the light intensity has a linear relationship with the color depth. 4 .

4. the method for removing spots according to claim 1, 2 or 3, is characterized in that: in S3, the mode of controlling laser output energy according to spot mark depth light sensitivity value is to input the obtained light sensitivity value into main control MCU, the single-chip microcomputer adjusts the pulse output time of the one-way thyristor or IGBT according to the command of the main control MCU to control the luminous intensity.

5. method for removing spots according to claim 4, is characterized in that: the workflow of described main control MCU is as follows:

S21, start;

S22, read the light intensity value;

S23, compare whether the read light sensitivity intensity value falls within the range of the light sensitivity intensity value of the set interval, if so, go to step S4, if not, return to step S2;

S24, configure the corresponding pulse output time according to the light sensitivity value;

S25, control the electronic switch tube to be turned on according to the configured output time;

S26. End.

6. A focus array distributed laser spot removal module, characterized in that it comprises a bracket (1), at least one vertical cavity surface emitting laser (2) and a condensing lens (3), the vertical cavity surface emitting laser ( 2) is arranged on the inner bottom surface of the bracket (1), the light-emitting direction of the vertical cavity surface emitting laser (2) is toward the front of the bracket (1), and the condenser lens (3) is arranged on the In front of the vertical cavity surface emitting laser (2), a plurality of focusing micromirrors ( 31).

7 . The focus array distributed laser spot removal module according to claim 6 , wherein the vertical cavity surface emitting laser ( 2 ) has one light exit hole or multiple light exit holes. 8 .

8 . The focus array distributed laser spot removal module according to claim 6 or 7 , wherein the at least one vertical cavity surface emitting laser ( 2 ) is a vertical cavity surface emitting laser arranged by several matrices. 9 . The light-emitting direction of all vertical cavity surface emitting lasers is directed toward the condenser lens (3), and irradiates on the condenser lens (3).

9. The focus array distributed laser spot removal module according to claim 6 or 7, characterized in that it further comprises a skin detection mechanism (4), and the skin detection mechanism (4) comprises an ambient light and a proximity sensor (41 ). ) and a light guide column (42), the ambient light and proximity sensor (41) are arranged on the circuit board (43), and are controlled and supplied with power by the controller of the circuit board (43), the light guide column (42) ) against the ambient light and proximity sensor (41), and a black light shield (44) covers the lower end of the light guide column (42) and the ambient light and proximity sensor (41); The upper end of the light guide column (42) is arranged on the outer periphery of the vertical cavity surface emitting laser (2).

10. A spot removal instrument, characterized in that it comprises a handle and a spot removal instrument main body, and the spot removal instrument main body comprises the focus array distributed laser spot removal module according to any one of claims 6-9.