CN218788117U - Multi-wavelength light source and therapeutic instrument - Google Patents
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Abstract
A multiwavelength light source, comprising: an array light source comprising a plurality of LEDs of different wavelengths; the micro-lens array group and the lens are arranged on the array light source light path; and the micro-lens array group and the lens are used for homogenizing emergent light of the LEDs with different wavelengths of the array light source. The LED is welded on the circuit board, and the light-emitting half angle is less than 30 degrees. The array light source comprises at least two LEDs with different wavelengths. The micro lens array group consists of two micro lens arrays, and the lens is a common lens or a Fresnel lens. A therapeutic apparatus comprising a multi-wavelength light source having the above features. The utility model relates to a multi-wavelength light source and therapeutic instrument realizes improving treatment to the even light of multi-wavelength LED array when guaranteeing multiple treatment function.
Description
Technical Field
The utility model belongs to the technical field of optics, in particular to multi-wavelength light source and therapeutic instrument.
Background
When the existing light source comprises LEDs with multiple wavelengths, a diffusion plate is generally adopted to realize uniform light, the use of the diffusion plate can cause large light energy loss, and high-uniformity multi-wavelength light is needed in some occasions, and the energy density of the light is also needed to be ensured. For example, an LED optical therapeutic apparatus is an apparatus for realizing skin treatment by irradiating human body parts through LEDs with different wavelengths, LED lights with different wavelengths have different effects, for example, blue light can kill propionibacterium causing acne, red light can improve the activity of cells, promote the metabolism of the cells, and enable the skin to secrete a large amount of collagen. In order to ensure the therapeutic effect, the light of different wavelengths not only needs higher energy density, but also needs higher uniformity of the light irradiated on the skin of the patient. The uniformity of emergent light spots of the existing LED optical therapeutic apparatus is not high, and the therapeutic effect is influenced to a certain extent.
Disclosure of Invention
The embodiment of the utility model provides a multi-wavelength light source and therapeutic instrument realizes the even light to multi-wavelength LED light source. The multiple wavelengths of light can ensure multiple therapeutic functions, and the uniform surface light can improve the therapeutic effect.
One of the embodiments of the utility model provides a multi-wavelength light source, include:
an array light source comprising a plurality of LEDs of different wavelengths;
the micro-lens array group and the lens are arranged on the array light source light path;
and the micro-lens array group and the lens are used for homogenizing the emergent light of the LEDs with different wavelengths of the array light source.
Preferably, the LED is soldered to the circuit board.
Preferably, the light emitting half angle of the LED is less than 30 °.
Preferably, the array light source comprises at least two LEDs with different wavelengths, and the light sources with different wavelengths emit light simultaneously or alternately to be incident on the target.
Preferably, the LED has a wavelength greater than 200nm.
Preferably, the microlens array set is composed of two microlens arrays.
Preferably, the lens is a common lens or a fresnel lens.
Preferably, the number of the array light source, the microlens array set and the lens is at least one.
In one embodiment of the present invention, the therapeutic apparatus comprises a multi-wavelength light source having the above features.
The embodiment of the utility model provides an in carry out dodging to the LED array light source that has different wavelengths through dodging system, realize the even face light source treatment of multi-wavelength, improve treatment.
Drawings
The above and other objects, features and advantages of exemplary embodiments of the present invention will become readily apparent from the following detailed description read in conjunction with the accompanying drawings. Several embodiments of the present invention are illustrated by way of example, and not by way of limitation, in the figures of the accompanying drawings and in which:
fig. 1 is a diagram of a multi-wavelength light source according to one embodiment of the present invention.
Fig. 2 is a diagram of a structure of an LED array light source according to one embodiment of the present invention.
Fig. 3 is a structure diagram of a microlens array according to one embodiment of the present invention.
Fig. 4 is a schematic diagram of dodging according to one embodiment of the present invention.
Fig. 5 is a nine-point test chart according to one embodiment of the present invention.
Fig. 6 is a diagram of a multi-wavelength light source according to one embodiment of the present invention.
Fig. 7 is a diagram of a multi-wavelength light source according to one embodiment of the present invention.
Fig. 8 is a diagram of a structure of an LED array light source according to one embodiment of the present invention.
Fig. 9 is a diagram of a structure of an LED array light source according to one embodiment of the present invention.
Detailed Description
In accordance with one or more embodiments, as shown in FIG. 1, a block diagram of a multi-wavelength light source is shown. The structure includes: an array light source 1 including a plurality of LEDs of different wavelengths; a micro lens array group 2 and a lens 3 which are arranged on the light path of the array light source 1; the micro lens array group 2 and the lens 3 homogenize the emergent light of the LEDs with different wavelengths of the array light source 1. As shown in fig. 2, which is a structural diagram of an array light source 1, the array light source 1 includes an LED light source 1-1, an LED light source 1-2 and a circuit board 1-3, wherein a peak wavelength of the LED light source 1-1 is about 415nm, a wavelength range is between 380nm and 480nm, a peak wavelength of the LED light source 1-2 is about 660nm, a wavelength range is between 610nm and 700nm, and a half-angle of light emission of both is about 15 °. The LED light sources 1-1 and 1-2 are respectively arranged in a row and are arranged at intervals and are welded on the circuit board 1-3, the LED light sources 1-1 form a 9 x 10 array, the LED light sources 1-2 form an 8 x 10 array, and the LED light sources and the circuit board emit light simultaneously or alternatively. The microlens array set 2 is composed of a microlens array 2-1 and a microlens array 2-2, and as shown in fig. 3, is a structural diagram of the microlens array 2-1, and the microlens array 2-1 is composed of 19 × 19 sub-lenses 2-1-1. The microlens array 2-2 has the same structure as the microlens array 2-1, and is placed back-to-back. The lens 3 is a fresnel lens with a focal length of 320mm. The number of the array light sources, the microlens array sets and the lenses in the present embodiment is one. As shown in fig. 4, which is a schematic diagram of the present embodiment, light emitted from the LED light source 1-1 and the LED light source 1-2 at different positions is incident on the microlens array 2-1, the sub-lenses of the microlens array 2-1 divide the light beam irradiated thereon, and the original larger light beam is divided into smaller light beams having higher uniformity than the larger light beam. The small light beams are incident on the target 4 through the micro lens array 2-2 and the lens 3, and the light spots of the small light beams divided by the micro lens array 2-1 on the target 4 can be coincided by reasonably setting the parameters of the micro lens array group 2 and the lens 3, so that the light uniformizing effect is achieved.
FIG. 5 shows a nine-spot test of spot uniformity, with the surface light spot having a length L and a width W. The distance from the center of the test point position 1 to the edge of the left side of the plane light spot is L/9, and the distance from the center of the test point position 1 to the edge of the upper side of the plane light spot is W/9; the distance from the center of the test point position 2 to the edge of the left side of the plane light spot is L/2, and the distance from the edge of the upper side of the plane light spot is W/9; the distance from the center of the test point position 3 to the edge of the right side of the surface light spot is L/9, and the distance from the edge of the upper side of the surface light spot is W/9; the distance from the center of the test point position 4 to the edge of the left side of the surface light spot is L/9, and the distance from the center of the test point position 4 to the edge of the upper side of the surface light spot is W/2; the distance from the center of the test point position 5 to the edge of the left side of the surface light spot is L/2, and the distance from the center of the test point position to the edge of the upper side of the surface light spot is W/2; the distance from the center of the test point position 6 to the edge of the right side of the surface light spot is L/9, and the distance from the edge of the upper side of the surface light spot is W/2; the distance from the center of the test point position 7 to the edge of the left side of the surface light spot is L/9, and the distance from the lower side edge of the surface light spot is W/9; the distance from the center of the test point position 8 to the edge of the left side of the surface light spot is L/2, and the distance from the center of the test point position to the edge of the lower side of the surface light spot is W/9; the distance from the center of the test point position 9 to the right edge of the surface light spot is L/9, and the distance from the lower edge of the surface light spot is W/9. And measuring the optical power or the light brightness of each point by using an optical power or light brightness measuring instrument according to the point positions, and dividing the numerical value of the point with the lowest optical power or light brightness by the numerical value of the point with the highest optical power or light brightness to obtain the uniformity of the surface light spots.
In this embodiment, the light emitted from the LED light source 1-1, i.e., light having a peak wavelength of about 415nm, forms a surface light spot size having a length L of about 95mm and a width W of about 95mm; the light emitted by the LED light source 1-2, namely the light with the peak wavelength of about 660nm, forms a surface light spot with the size of about 94mm of length L and 94mm of width W; the light emitted by the LED light source 1-1 and the light emitted by the LED light source 1-2 at the same time, namely the light mixed by the light with the peak wavelength of 415nm and the light with the peak wavelength of 660nm, has the spot size L of about 95mm and the width W of about 95mm. According to the data, the distance between the center of the corresponding test point 1 and the edge of the left side of the surface light spot is 10.6mm, and the distance between the center of the corresponding test point 1 and the edge of the upper side of the surface light spot is 10.6mm; the distance from the center of the test point position 2 to the edge of the left side of the surface light spot is 47.5mm, and the distance from the edge of the upper side of the surface light spot is 10.6mm; the distance from the center of the test point position 3 to the edge of the right side of the surface light spot is 10.6mm, and the distance from the edge of the upper side of the surface light spot is 10.6mm; the distance from the center of the test point position 4 to the edge of the left side of the surface light spot is 10.6mm, and the distance from the edge of the upper side of the surface light spot is 47.5mm; the distance from the center of the test point position 5 to the edge of the left side of the surface light spot is 47.5mm, and the distance from the edge of the upper side of the surface light spot is 47.5mm; the distance from the center of the test point position 6 to the edge of the right side of the surface light spot is 10.6mm, and the distance from the center of the test point position to the edge of the upper side of the surface light spot is 47.5mm; the distance from the center of the test point position 7 to the edge of the left side of the surface light spot is 10.6mm, and the distance from the edge of the lower side of the surface light spot is 10.6mm; the distance from the center of the test point position 8 to the edge of the left side of the surface light spot is 47.5mm, and the distance from the edge of the lower side of the surface light spot is 10.6mm; the distance from the center of the test point position 9 to the edge of the right side of the surface light spot is 10.6mm, and the distance from the lower side edge of the surface light spot is 10.6mm. The distance between the center of the corresponding test point position 1 and the edge of the left side of the surface light spot is 10.4mm, and the distance between the center of the corresponding test point position 1 and the edge of the upper side of the surface light spot is 10.4mm; the distance from the center of the test point position 2 to the edge of the left side of the surface light spot is 47mm, and the distance from the center of the test point position 2 to the edge of the upper side of the surface light spot is 10.4mm; the distance from the center of the test point position 3 to the edge of the right side of the surface light spot is 10.4mm, and the distance from the edge of the upper side of the surface light spot is 10.4mm; the distance from the center of the test point position 4 to the edge of the left side of the surface light spot is 10.4mm, and the distance from the edge of the upper side of the surface light spot is 47mm; the distance from the center of the test point position 5 to the edge of the left side of the surface light spot is 47mm, and the distance from the center of the test point position 5 to the edge of the upper side of the surface light spot is 47mm; the distance from the center of the test point position 6 to the edge of the right side of the surface light spot is 10.4mm, and the distance from the edge of the upper side of the surface light spot is 47mm; the distance from the center of the test point position 7 to the edge of the left side of the surface light spot is 10.4mm, and the distance from the edge of the lower side of the surface light spot is 10.4mm; the distance from the center of the test point position 8 to the edge of the left side of the surface light spot is 47mm, and the distance from the center of the test point position to the edge of the lower side of the surface light spot is 10.4mm; the distance from the center of the test point position 9 to the edge of the right side of the surface light spot is 10.4mm, and the distance from the lower side edge of the surface light spot is 10.4mm. The optical power is respectively tested according to the positions of the points, the testing equipment is an optical power meter, and the test data is shown in table 1, table 2 and table 3, wherein table 1 is nine-point test data of a surface light spot formed by the emitted light of the LED light source 1-1, table 2 is nine-point test data of a surface light spot formed by the emitted light of the LED light source 1-2, and table 3 is nine-point test data of a surface light spot formed by the mixed light of the emitted light of the LED light source 1-1 and the emitted light of the LED light source 1-2.
TABLE 1
| Point location | Luminous power (mW) | Point location | Luminous power (mW) | Point location | Luminous power (mW) |
| 1 | 14.6 | 4 | 15.3 | 7 | 14.9 |
| 2 | 16.1 | 5 | 17.2 | 8 | 15.3 |
| 3 | 15.8 | 6 | 16.2 | 9 | 15.9 |
TABLE 2
| Point location | Luminous power (mW) | Point location | Luminous power (mW) | Point location | Luminous power (mW) |
| 1 | 12.5 | 4 | 13.0 | 7 | 12.8 |
| 2 | 13.5 | 5 | 15.1 | 8 | 14.5 |
| 3 | 12.4 | 6 | 13.6 | 9 | 13.1 |
TABLE 3
| Point location | Luminous power (mW) | Point location | Luminous power (mW) | Point location | Luminous power (mW) |
| 1 | 26.9 | 4 | 28.1 | 7 | 27.9 |
| 2 | 30.2 | 5 | 33.3 | 8 | 29.2 |
| 3 | 28.7 | 6 | 29.2 | 9 | 29.0 |
The microlens array set 2 was removed from the optical path system, and then a nine-point test was performed on the uniformity of the system, and the test results are shown in tables 4, 5 and 6, where table 4 is nine-point test data of the surface light spot formed by the emitted light of the LED light source 1-1, table 5 is nine-point test data of the surface light spot formed by the emitted light of the LED light source 1-2, and table 5 is nine-point test data of the surface light spot formed by the mixture of the emitted light of the LED light source 1-1 and the emitted light of the LED light source 1-2.
TABLE 4
| Point location | Luminous power (mW) | Point location | Luminous power (mW) | Point location | Luminous power (mW) |
| 1 | 12.6 | 4 | 14.2 | 7 | 12.9 |
| 2 | 13.6 | 5 | 31.4 | 8 | 13.4 |
| 3 | 13.1 | 6 | 14 | 9 | 13.1 |
TABLE 5
| Point location | Luminous power (mW) | Point location | Luminous power (mW) | Point location | Luminous power (mW) |
| 1 | 12.7 | 4 | 13.9 | 7 | 12.7 |
| 2 | 13.1 | 5 | 29.5 | 8 | 13.4 |
| 3 | 12.5 | 6 | 12.8 | 9 | 13 |
TABLE 6
| Point location | Luminous power (mW) | Point location | Luminous power (mW) | Point location | Luminous power (mW) |
| 1 | 25.6 | 4 | 28.5 | 7 | 25.8 |
| 2 | 27.2 | 5 | 60.2 | 8 | 27.1 |
| 3 | 26 | 6 | 27 | 9 | 26.2 |
According to the data in the above table, when the optical path system has the microlens array set 2, the lowest optical power of the surface light spot formed by the LED light source 1-1 is point 1, the numerical value is 14.6mW, the highest optical power is point 5, and the numerical value is 17.2mW, so that the uniformity can be calculated as: 14.6/17.2=84.9%. The lowest luminous power of a surface light spot formed by the LED light source 1-2 is point 3, the numerical value is 12.4mW, the highest luminous power is point 5, and the numerical value is 15.1mW, so that the uniformity can be calculated as follows: 12.4/15.1=82.1%. The lowest luminous power of a surface light spot formed by the LED light source 1-1 and the LED light source 1-2 is point location 1, the numerical value is 26.9mW, the highest luminous power is point location 5, and the numerical value is 33.3mW, so that the uniformity can be calculated as follows: 26.9/33.3=80.8%. When the micro-lens array is removed from the light path system, the lowest luminous power of the surface light spot formed by the LED light source 1-1 is point 1, the numerical value is 12.6mW, the highest luminous power is point 5, and the numerical value is 31.4mW, so that the uniformity can be calculated as follows: 12.6/31.4=40.1%. The lowest luminous power of a surface light spot formed by the LED light source 1-2 is point 3, the numerical value is 12.5mW, the highest luminous power is point 5, and the numerical value is 29.5mW, so that the uniformity can be calculated as follows: 12.5/29.5=42.4%. The lowest luminous power of a surface light spot formed by the LED light source 1-1 and the LED light source 1-2 is point 1, the numerical value is 25.6mW, the highest luminous power is point 5, and the numerical value is 60.2mW, so that the uniformity can be calculated as follows: 25.6/60.2=42.5%. Therefore, the light is shaped by the micro-lens array group and the focusing lens, and the surface light spots formed by the emitted light of the LED light sources 1-1 and 1-2 arranged at intervals and the mixed light of the LED light sources and the LED light sources can obtain higher uniformity.
In accordance with one or more embodiments, as shown in FIG. 6, a block diagram of a multi-wavelength light source is shown. The structure includes: an array light source 1 including a plurality of LEDs of different wavelengths; a micro lens array group 2 arranged on the light path of the array light source 1; the micro lens array group 2 and the lens 4 homogenize the emergent light of the LEDs with different wavelengths of the array light source 1. The lens 4 is a normal lens and is a convex lens with a focal length of 320 nm. This embodiment replaces the fresnel lens with a common convex lens, which also serves to homogenize the light.
In accordance with one or more embodiments, as shown in FIG. 7, a block diagram of a multi-wavelength light source is shown. The structure includes: an array light source 6 and an array light source 7 including a plurality of LEDs of different wavelengths; a microlens array group 8, a microlens array group 9 and a lens 10, which are placed on the light path of the array light sources 6 and 7; the micro lens array group 8, the micro lens array group 9 and the lens 10 are used for homogenizing the emergent light of the LEDs with different wavelengths of the array light source 6 and the array light source 7. FIG. 8 shows a structure diagram of an array light source 6, FIG. 9 shows a structure diagram of an array light source 7, the array light source 6 includes an LED light source 6-1 and a circuit board 6-2, the peak wavelength of the LED light source 6-1 is about 415nm, the wavelength range is between 380nm and 480nm, the array light source 7 includes an LED light source 7-1 and a circuit board 7-2, the peak wavelength of the LED light source 7-1 is about 660nm, the wavelength range is between 610nm and 700nm, and the light emitting half angles of the two are about 15 degrees. The LED light source 6-1 is welded on the circuit board 6-2, the LED light source 7-1 is welded on the circuit board 7-2, the LED light source 6-1 and the LED light source 7-1 form a 17 x 10 array, and the LED light source emit light simultaneously or alternatively. The micro lens array group 8 consists of a micro lens array 8-1 and a micro lens array 8-2, and the micro lens array group 9 consists of a micro lens array 9-1 and a micro lens array 9-2. The structures of the micro lens array 8-1, the micro lens array 8-2, the micro lens array 9-1 and the micro lens array 9-2 are the same as the micro lens array 2-1. Wherein the micro lens array 8-1 and the micro lens array 8-2 are placed back to back, and the micro lens array 9-1 and the micro lens array 9-2 are placed back to back. The lens 10 is a fresnel lens with a focal length of 450nm. In this embodiment, the number of the array light sources and the number of the microlens array sets are two, and the number of the lenses is one.
The therapeutic apparatus is characterized by comprising the multi-wavelength light source in the embodiment.
It is worth noting that while the foregoing has described the spirit and principles of the present invention with reference to several specific embodiments, it is to be understood that the present invention is not limited to the disclosed embodiments, nor is the division of aspects, which is for convenience only as the features in these aspects cannot be combined. The invention is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims.
Claims (9)
1. A multiwavelength light source, comprising:
an array light source comprising a plurality of LEDs of different wavelengths;
the micro-lens array group and the lens are arranged on the array light source light path;
and the micro-lens array group and the lens are used for homogenizing the emergent light of the LEDs with different wavelengths of the array light source.
2. The multiwavelength light source of claim 1, wherein the LED is soldered to a circuit board.
3. The multiwavelength light source of claim 1, wherein the LED has a half angle of emission of less than 30 °.
4. The multiwavelength light source of claim 1, wherein the array comprises at least two different wavelength LEDs, and wherein the different wavelength LEDs emit light simultaneously or alternately to be incident on the target.
5. The multiwavelength light source of claim 1, wherein the LED has a wavelength greater than 200nm.
6. The multiwavelength light source of claim 1, wherein the microlens array set consists of two microlens arrays.
7. The multiwavelength light source of claim 1, wherein the lens is a conventional lens or a fresnel lens.
8. The multiwavelength light source of claim 1, wherein the number of array light sources, microlens array sets and lenses is at least one each.
9. Therapeutic apparatus, its characterized in that includes: the multiwavelength light source of at least one of any of claims 1 to 8.
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| CN202223444831.7U CN218788117U (en) | 2022-12-22 | 2022-12-22 | Multi-wavelength light source and therapeutic instrument |
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