Infrared light-emitting equipment and imager, diagnosis and treatment instrument and beauty instrument using infrared light-emitting equipment

Abstract

The utility model discloses an infrared light-emitting device and an imager, a diagnosis and treatment instrument and a beauty instrument using the infrared light-emitting device. The infrared light-emitting device comprises an excitation light source, an infrared light quantum dot light conversion film, a first light transmitting element, a refrigerating system, a light condensing element and a light guide element. The infrared light quantum dot light conversion film is arranged on the side, emitting light, of the excitation light source, and the infrared light quantum dot light conversion film, the first light transmitting element, the light condensation element and the light guide element are sequentially arranged in the direction away from the excitation light source. The refrigerating system is arranged on the outer side of the infrared light quantum dot light conversion film. According to the technical scheme of the utility model, the refrigeration system is arranged, so that the refrigeration and heat dissipation effects on the infrared light quantum dot light conversion film can be effectively realized, and light attenuation caused by photothermal conversion and accumulation is avoided, thereby obtaining the infrared light-emitting equipment with stable light emitting and prolonging the service life.

Description

Technical Field

[0001] This utility model relates to the field of optical technology, and in particular to an infrared light-emitting device and its applications in imaging, diagnostic and therapeutic instruments, and beauty instruments. Background Technology

[0002] Near-infrared light, especially near-infrared II wavelengths, has high penetrability and is currently commercially applied in fields such as physiotherapy, communications, medicine, and beauty. Common sources for generating near-infrared light include near-infrared lasers, near-infrared LEDs, and short-wave infrared radiators. Each of these three methods has the following drawbacks and limitations:

[0003] The main wavelengths of near-infrared laser technology that are mature include 780nm, 850nm, 1064nm, 1310nm, and 1550nm. As a near-infrared light source, it is widely used in night vision devices, optical communication, laser surgery, and laser processing. However, its monochromatic light and high radiation intensity limit its application in physiotherapy, medical treatment, night vision, and bioimaging.

[0004] Near-infrared LED light sources typically use materials such as gallium arsenide (GaAs), with wavelengths generally ranging from 700 nm to 1600 nm. However, their low efficiency, poor stability, and high cost have hindered their application in the field of near-infrared light sources.

[0005] Shortwave infrared radiators can emit wavelengths from 750nm to 2000nm by evacuating a vacuum and heating the filament. They feature high emission intensity, a wide emission spectrum, and stable and efficient operation, making them suitable for high-speed and high-temperature industries. They are currently widely used in photovoltaics, semiconductors, lithium batteries, printing, and blow molding. However, achieving this shortwave radiation requires heating the filament to 1600-2600℃, and their high price significantly hinders their application in human-related fields.

[0006] Therefore, designing an infrared emitting device with high luminous efficiency, good luminous stability, and portability has become a hot topic and a goal pursued by the industry. Utility Model Content

[0007] In order to improve the infrared light emission efficiency, infrared light emission stability and portability of light sources that use infrared quantum dots as the light emission subject, this utility model provides an infrared light emission device and its application in imaging instruments, diagnostic instruments and beauty instruments.

[0008] The technical solution adopted by this utility model to solve its problem is:

[0009] An infrared light-emitting device includes an excitation light source, an infrared quantum dot light-converting film, a first light-transmitting element, a cooling system, a light-concentrating element, and a light-guiding element;

[0010] The infrared quantum dot light-converting film is disposed on one side of the excitation light source and along a direction away from the excitation light source. The infrared quantum dot light-converting film, the first light-transmitting element, the light-concentrating element, and the light-guiding element are arranged in sequence.

[0011] The cooling system is located on the outside of the infrared quantum dot light conversion film;

[0012] The first light-transmitting element has a light-inlet surface and a light-outlet surface on both sides along its thickness direction, with the light-inlet surface facing the excitation light source; the first light-transmitting element satisfies the following: infrared light transmittance ≥ 50%, visible light transmittance ≤ 80%.

[0013] Furthermore, the infrared light-emitting device also includes a second light-transmitting element, which is located between the excitation light source and the infrared quantum dot light conversion film, and the thermal conductivity of the second light-transmitting element is ≥0.1 W / m·K~2.5 W / m·K.

[0014] Furthermore, the infrared quantum dot light-converting film is sandwiched between the first light-transmitting element and the second light-transmitting element.

[0015] Furthermore, a gap region is provided between the second light-transmitting element and the excitation light source.

[0016] Furthermore, the cooling system includes a fan, which is disposed outside the infrared quantum dot light conversion film, and the air outlet of the fan faces the interval area so that the air blown by the fan forms an air duct in the interval area.

[0017] Furthermore, the refrigeration system includes a fluid refrigeration system, which includes a heat-conducting element. The heat-conducting element is disposed in close contact with the outer side of the infrared quantum dot light conversion film, and a circulating refrigeration fluid is provided in the heat-conducting element.

[0018] Furthermore, the infrared quantum dot light-converting film can be rotatably disposed relative to the excitation light source, and at any moment during the rotation of the infrared quantum dot light-converting film, the area of ​​the excitation light source illuminating the light-receiving surface does not completely cover the light-receiving surface.

[0019] Furthermore, the infrared light-emitting device also includes a beam expander, which is connected to the light outlet of the light guide element.

[0020] Furthermore, the infrared quantum dot conversion film comprises at least two stacked polymer film layers, each containing a polymer, and the infrared quantum dots are distributed on the composite surface of two adjacent polymer film layers.

[0021] Furthermore, the infrared quantum dot conversion film includes at least one polymer film layer containing a polymer, and the infrared quantum dots are doped in the polymer film layer.

[0022] Based on the same design concept, this utility model also provides an imager, which includes the infrared light-emitting device described above.

[0023] Based on the same design concept, this utility model also provides a diagnostic and therapeutic instrument, which includes the infrared light-emitting device described above.

[0024] Based on the same design concept, this utility model also provides a beauty device, which includes the infrared light-emitting device described above.

[0025] In summary, the infrared emitting device provided by this utility model has at least the following technical advantages compared with the prior art:

[0026] By setting a cooling system on the outside of the infrared quantum dot light conversion film, the infrared quantum dot light conversion film and its surrounding area can be effectively cooled and dissipated, promoting the heat dissipation inside the infrared light-emitting device and preventing the heat generated by the thermal radiation of the infrared quantum dot light conversion film from accumulating in the infrared quantum dot light conversion film and its surrounding area. This improves the infrared light emission stability of the infrared light-emitting device based on the infrared quantum dot light conversion film, extends its service life, and also facilitates the lightweight design of the infrared light-emitting device. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the structure of the infrared light-emitting device of this utility model;

[0028] Figure 2 This is a top view of the infrared light-emitting device of this utility model;

[0029] Figure 3 for Figure 2 The diagram shows a cross-sectional view of section AA.

[0030] Figure 4 This is a schematic diagram of the infrared quantum dot light conversion film of this utility model;

[0031] Figure 5 This is another schematic diagram of the infrared quantum dot light conversion film of this utility model;

[0032] Figure 6 This is a schematic diagram illustrating one of the cooling functions of this utility model;

[0033] Figure 7 This is a schematic diagram illustrating how the present invention achieves another cooling function;

[0034] The meanings of the reference numerals in the attached figures are as follows:

[0035] 1. Excitation light source; 2. Infrared quantum dot light conversion film; 21. Polymer film layer; 22. Infrared quantum dots; 3. First light-transmitting element; 4. Cooling system; 5. Concentrating element; 6. Second light-transmitting element; 7. Mounting substrate; 71. First gear; 8. Motor; 81. Second gear. Detailed Implementation

[0036] To better understand and implement this invention, the technical solutions in the embodiments of this invention will be clearly and completely described below with reference to the accompanying drawings.

[0037] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

[0038] See Figures 1-3 As shown in the figure, according to an embodiment of the present invention, the infrared light-emitting device includes an excitation light source 1, an infrared quantum dot light-converting film 2, a first light-transmitting element 3, a cooling system 4, a focusing element 5, and a light guide element (not shown in the figure). The infrared quantum dot light-converting film 2 is disposed on the side of the excitation light source 1 that emits light, and the infrared quantum dot light-converting film 2, the first light-transmitting element 3, the focusing element 5, and the light guide element are arranged sequentially along the direction away from the excitation light source 1. The excitation light source 1 can be a near-infrared laser light source, a near-infrared LED light source, or a short-wave infrared radiator, etc., used to emit excitation light when starting up. The focusing element 5 can be an optical lens that converges light, such as a Fresnel lens or a convex lens. The scattered infrared light emitted from the infrared quantum dot light-converting film 2 is converged by the Fresnel lens or convex lens, thereby obtaining focused infrared light. Then, the focused infrared light is coupled into the light guide element and output through the light guide element, thereby providing the irradiated object with high radiation intensity and concentrated irradiation position.

[0039] In a preferred embodiment, the light guiding element includes either a light guide tube or an optical fiber.

[0040] See Figure 3As shown, the first light-transmitting element 3 has a light-inlet surface and a light-outlet surface on both sides along its thickness direction, with the light-inlet surface facing the excitation source 1. The first light-transmitting element 3 satisfies the following conditions: infrared light transmittance ≥ 50%, and visible light transmittance ≤ 80%. By setting the first light-transmitting element 3 on the light-outlet side of the infrared quantum dot light-converting film 2, the purpose is to regulate the light output of the infrared light-emitting device. Most of the infrared light emitted by the infrared quantum dot light-converting film 2 can pass through the first light-transmitting element 3 and exit from the infrared light-emitting device, thereby achieving infrared light irradiation of the infrared light-emitting device; while most of the visible light originating from the excitation source 1, when it reaches the first light-transmitting element 3, can be reflected by the first light-transmitting element 3 and will not exit from the infrared light-emitting device.

[0041] Based on the above structural design, if the infrared light-emitting device of this utility model is applied to some beauty instruments, facial or eye granulation equipment, users will not see visible light when using the infrared light-emitting device to irradiate their face or eyes, thus eliminating the discomfort caused by glare from visible light irradiation during use and improving the comfort of use.

[0042] See Figure 6 and Figure 7 As shown, the cooling system 4 is located on the outside of the infrared quantum dot light conversion film 2. By setting the cooling system 4 on the outside of the infrared quantum dot light conversion film 2, the cooling system 4 can effectively cool the infrared quantum dot light conversion film 2 and its surrounding area, promote the dissipation of heat inside the infrared light-emitting device, and prevent the heat generated by the thermal radiation of the infrared quantum dot light conversion film 2 from accumulating in the infrared quantum dot light conversion film 2 and its surrounding area. This improves the infrared light emission stability of the infrared light-emitting device based on the infrared quantum dot light conversion film 2, extends its service life, and also facilitates the lightweight design of the infrared light-emitting device.

[0043] See Figure 3 As shown, in a preferred embodiment of the present invention, the infrared light-emitting device further includes a second light-transmitting element 6, which is located between the excitation light source 1 and the infrared quantum dot light conversion film 2. The thermal conductivity λ of the second light-transmitting element 6 is ≥0.1 W / m·K~2.5 W / m·K.

[0044] When the infrared light originating from the excitation source 1 reaches the light-inlet surface of the second light-transmitting element 6, it is reflected by the second light-transmitting element 6, thereby effectively reducing the heat radiation from the excitation source 1 received by the infrared quantum dot light-converting film 2. At the same time, when the infrared light emitted from the infrared quantum dot light-converting film 2 reaches the light-emitting surface of the second light-transmitting element 6, it is also reflected by the second light-transmitting element 6, thereby adjusting the light path propagation direction of the infrared light emitted by the infrared quantum dot light-converting film 2, so that the infrared light emitted from the infrared quantum dot light-converting film 2 is concentrated and propagates along the light-emitting direction of the infrared light-emitting device, improving the luminous efficiency of the infrared light-emitting device.

[0045] Furthermore, based on the thermal conductivity of the second light-transmitting element 6, the second light-transmitting element 6 can also serve as a heat dissipation medium between the excitation light source 1 and the infrared quantum dot light conversion film 2. After the heat radiated by the excitation light source 1 is transferred to the second light-transmitting element 6, it is then transferred to the surroundings via the second light-transmitting element 6, further reducing the accumulation of heat between the excitation light source 1 and the infrared quantum dot light conversion film 2, thereby exerting its heat dissipation function.

[0046] Specifically, as one optional technical solution, the first light-transmitting element 3 and the second light-transmitting element 6 can adopt a highly transparent infrared stealth film design based on optical glass plus an FTO-Ag-FTO configuration, thereby achieving the optical effect of infrared light reflection and visible light transmission. In this design, the position of the visible light transmission peak can also be affected by adjusting the thickness of the FTO (tin oxide) film, thereby optimizing the transmission spectrum curve.

[0047] In an optional embodiment, the infrared quantum dot conversion film 2 is held between a first light-transmitting element 3 and a second light-transmitting element 6. In this embodiment, the cooperation of the first light-transmitting element 3 and the second light-transmitting element 6 facilitates the convenient installation and fixation of the infrared quantum dot conversion film 2.

[0048] In another alternative embodiment, a gap region is provided between the second light-transmitting element 6 and the excitation light source 1. In this embodiment, when the optical power of the excitation light source 1 is relatively high, by providing a gap region between the second light-transmitting element 6 and the excitation light source 1, and filling the gap region with air, the diffusion of heat generated from the excitation light source 1 to the infrared quantum dot light conversion film 2 can be delayed due to the low thermal conductivity of air.

[0049] See Figure 3 and Figure 6As shown, in another preferred embodiment of this invention, the cooling system 4 includes a fan, which is disposed outside the infrared quantum dot light-converting film 2. The fan's air outlet faces the gap between the second light-transmitting element 6 and the excitation light source 1, so that the air blown by the fan forms an air duct in the gap. Through this structural design, convective airflow can be used to dissipate heat from the infrared quantum dot light-converting film 2 and its surrounding area, preventing heat concentration in the infrared light-emitting device and improving the stability of infrared light emission and the device's lifespan.

[0050] See Figure 7 As shown, in another preferred embodiment of this invention, the cooling system 4 includes a fluid cooling system, which includes a heat-conducting element. The heat-conducting element is closely attached to the outer side of the infrared quantum dot conversion film 2, and a circulating cooling fluid is disposed within the heat-conducting element. Similarly, the circulating cooling fluid can accelerate the removal of heat from the infrared quantum dot conversion film 2 and its surrounding area, preventing the heat generated by the thermal radiation of the infrared quantum dot conversion film 2 from accumulating in the infrared quantum dot conversion film and its surrounding area, thereby improving the stability of infrared light emission and the service life of the equipment.

[0051] Preferably, the refrigerant in the heat-conducting element can be low-temperature cold water, or other low-temperature refrigerant fluids such as refrigerant liquid.

[0052] See Figure 3 As shown, in another preferred embodiment of this invention, the infrared quantum dot light-converting film 2 can be rotatably disposed relative to the excitation light source 1. At any moment during the rotation of the infrared quantum dot light-converting film 2, the area of ​​the light-receiving surface of the infrared quantum dot light-converting film 2 illuminated by the excitation light from the excitation light source 1 does not completely cover its light-receiving surface; that is, the excitation light from the excitation light source 1 only illuminates a portion of the light-receiving surface of the infrared quantum dot light-converting film 2. Furthermore, when the infrared quantum dot light-converting film 2 rotates 360°, the excitation light emitted by the excitation light source 1 can completely scan the entire light-receiving surface of the infrared quantum dot light-converting film 2.

[0053] Through the above structural design, on the one hand, it can be ensured that the entire area of ​​the light-incoming surface of the infrared quantum dot light-converting film 2 can be fully irradiated by the excitation light during one rotation cycle. On the other hand, it can give the area of ​​the excitation light source 1 that is not irradiated on the light-incoming surface of the infrared quantum dot light-converting film 2 a chance to cool down, thereby further improving the luminous stability of the infrared light-emitting device.

[0054] Specifically, see Figure 1 and Figure 3As shown, as one of the optional technical solutions of this embodiment, the infrared quantum dot light conversion film 2 is installed on the inner side of the mounting base 7, the outer side of the mounting base 7 is provided with a first gear 71, the infrared light-emitting device is provided with a motor 8, the output end of the motor 8 is provided with a second gear 81, the second gear 81 and the first gear 71 are meshed and connected, the mounting base 7 can be driven to rotate by starting the motor 8, thereby driving the infrared quantum dot light conversion film 2 on the inner side of the mounting base 7 to rotate relative to the excitation light source 1.

[0055] Of course, the above structural design is only one way to realize the rotational motion of the infrared quantum dot light-converting film 2 relative to the excitation light source 1. This utility model can also use a motor to directly drive the rotational motion of the infrared quantum dot light-converting film 2, etc. Other solutions will not be described in detail.

[0056] In an optional embodiment of this invention, the infrared emitting device further includes a beam expander (not shown in the figure), which is connected to the light outlet of the light guide element. Specifically, by setting the beam expander, the diameter of the excitation beam can be effectively expanded, thereby reducing its divergence angle; and the beam expander can reduce phase distortion and intensity non-uniformity in the beam, thereby improving the overall quality of the beam.

[0057] See Figure 4 As shown, in an optional embodiment of this utility model, the infrared quantum dot light conversion film 2 is configured as a "sandwich" structure, specifically: the infrared quantum dot light conversion film 2 includes at least two polymer film layers 21, the polymer film layers 21 contain polymers, and infrared quantum dots 22 are distributed on the composite surface of two adjacent polymer film layers 21 to form a quantum dot layer, so that the infrared quantum dot light conversion film 2 forms a composite film layer structure of "polymer film layer-quantum dot layer-polymer film layer", and the polymer film layer serves as a barrier.

[0058] See Figure 5 As shown, in another optional embodiment of this utility model, the infrared quantum dot light conversion film 2 is configured as a single-layer or multi-layer film structure. Specifically, the infrared quantum dot light conversion film 2 includes at least one polymer film layer 21, which contains a polymer, and infrared quantum dots 22 are doped into the polymer film layer 21. Preferably, the infrared quantum dots 22 are directly doped into a single-layer, three-layer, five-layer, seven-layer, nine-layer, or eleven-layer polymer film to manufacture the infrared quantum dot light conversion film 2 of this embodiment.

[0059] Based on the same design concept, this utility model also provides an embodiment of an imager, which includes the infrared emitting device described in the above embodiments.

[0060] Based on the same design concept, this utility model also provides an embodiment of a diagnostic and therapeutic instrument, which includes the infrared emitting device described in the above embodiments.

[0061] Based on the same design concept, this utility model also provides an embodiment of a beauty device, which includes the infrared light-emitting device described in the above embodiments.

[0062] The technical means disclosed in this utility model are not limited to those disclosed in the above embodiments, but also include technical solutions composed of any combination of the above technical features. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of this utility model, and these improvements and modifications are also considered within the scope of protection of this utility model.

Claims

1. An infrared light emitting device, characterized by It includes an excitation light source, an infrared quantum dot light conversion film, a first light-transmitting element, a cooling system, a light-concentrating element, and a light-guiding element; The infrared quantum dot light-converting film is disposed on one side of the excitation light source and along a direction away from the excitation light source. The infrared quantum dot light-converting film, the first light-transmitting element, the light-concentrating element, and the light-guiding element are arranged in sequence. The cooling system is located on the outside of the infrared quantum dot light conversion film; The first light-transmitting element has a light-inlet surface and a light-outlet surface on both sides along its thickness direction, with the light-inlet surface facing the excitation light source; the first light-transmitting element satisfies the following: infrared light transmittance ≥ 50%, visible light transmittance ≤ 80%.

2. The infrared light emitting device of claim 1, wherein, The infrared light-emitting device further includes a second light-transmitting element, which is located between the excitation light source and the infrared quantum dot light-converting film. The thermal conductivity of the second light-transmitting element is ≥0.1 W / m·K~2.5 W / m·K.

3. The infrared light emitting device of claim 2, wherein, The infrared quantum dot light-converting film is held between the first light-transmitting element and the second light-transmitting element.

4. The infrared light emitting device of claim 2, wherein, A gap is provided between the second light-transmitting element and the excitation light source.

5. The infrared light emitting device of claim 4, wherein, The cooling system includes a fan, which is disposed outside the infrared quantum dot light conversion film, and the air outlet of the fan faces the interval area so that the air blown by the fan forms an air duct in the interval area.

6. The infrared light emitting device of claim 1, wherein, The refrigeration system includes a fluid refrigeration system, which includes a heat-conducting element. The heat-conducting element is disposed in close contact with the outer side of the infrared quantum dot light conversion film, and a circulating refrigeration fluid is provided in the heat-conducting element.

7. The infrared light emitting device of claim 1, wherein, The infrared quantum dot light-converting film can be rotated relative to the excitation light source, and at any moment during the rotation of the infrared quantum dot light-converting film, the area of ​​the excitation light source illuminating the light-receiving surface does not completely cover the light-receiving surface.

8. The infrared emitting device according to claim 1, characterized in that, The infrared light-emitting device also includes a beam expander, which is connected to the light outlet of the light guide element.

9. The infrared light emitting device according to any of claims 1-8, characterized in that, The infrared quantum dot conversion film comprises at least two stacked polymer film layers, each containing a polymer, and the infrared quantum dots are distributed on the composite surface of two adjacent polymer film layers.

10. The infrared light emitting device according to any of claims 1-8, characterized in that, The infrared quantum dot conversion film includes at least one polymer film layer, the polymer film layer contains a polymer, and the infrared quantum dots are doped in the polymer film layer.

11. An imager, comprising: Including the infrared emitting device according to any one of claims 1-10.

12. A diagnostic treatment apparatus, characterized by comprising: Including the infrared emitting device according to any one of claims 1-10.

13. A cosmetic device, characterized by, Including the infrared emitting device according to any one of claims 1-10.

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