Infrared light-emitting equipment based on liquid infrared quantum dot light conversion element, imager, diagnosis and treatment instrument and beauty instrument

Abstract

The utility model discloses an infrared light-emitting device based on a liquid infrared quantum dot light conversion element, an imager, a diagnosis and treatment instrument and a beauty instrument. The infrared light-emitting device comprises an excitation light source, the liquid infrared quantum dot light conversion element, a light transmitting element, a refrigerating system, a light condensing element and a light guide mechanism. The liquid infrared quantum dot light conversion element is arranged on the side, emitting light, of the excitation light source, and the liquid infrared quantum dot light conversion element, the light transmitting element, the light condensing element and the light guide mechanism are sequentially arranged in the direction away from the excitation light source. The refrigerating system is arranged on the outer side of the liquid infrared quantum dot light conversion element. In the scheme of the utility model, the liquid infrared quantum dot light conversion element adopted by the infrared light-emitting equipment has higher light-emitting efficiency, and the solvent of the liquid infrared quantum dot light conversion element can also play a role in heat dissipation so as to slow down light attenuation. By arranging the refrigerating system, efficient heat dissipation is conducted on the infrared quantum dot solution, light attenuation of the quantum dot light conversion element can be effectively avoided, and stable light output of the infrared light-emitting equipment is achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to optical technology field especially, it relates to a kind of infrared luminescent equipment and imaging instrument, diagnosis and treatment instrument, beauty instrument based on liquid infrared quantum dot light conversion element. BACKGROUND

[0002] Near-infrared quantum dots, as a new type of nano-optical material, are expected to be packaged with backlight to realize near-infrared emission, and then used as a near-infrared light source in the fields of semiconductor detection, physiotherapy, medical treatment and night vision.

[0003] To obtain a near-infrared emitting light source based on quantum dot luminescent material, in addition to selecting a suitable backlight, the key is that the quantum dots must have high luminescent efficiency and excellent stability. For solid-state near-infrared quantum dots, due to the aggregation effect, photon reabsorption and non-radiative recombination will occur, which will significantly reduce the luminescent efficiency. When packaged with the backlight, the near-infrared quantum dots show a significant decrease in luminescent performance or even quenching under light, heat and environmental conditions of packaging, and have poor stability, which is difficult to meet the requirements of practical applications.

[0004] However, liquid near-infrared quantum dots have the following advantages:

[0005] 1) By modifying the surface ligand of the quantum dots or adding a dispersing agent, the Stokes shift between the quantum dot particles can be reduced, the second exciton absorption commonly existing in near-infrared quantum dots can be eliminated, and higher luminescent efficiency can be achieved.

[0006] 2) The carrying container of the liquid quantum dots has the characteristics of being movable and replaceable, and the distance from the excitation light source can be set to obtain spatial light to excite the quantum dots to realize luminescence, thereby realizing the luminescent stability of the quantum dots.

[0007] Therefore, how to design an infrared luminescent device with high luminescent efficiency, good luminescent stability and portability by using liquid infrared quantum dot technology has great significance in the optical technology industry. UTILITY MODEL CONTENTS

[0008] Based on the excellent characteristics of liquid infrared quantum dots, to improve the luminescent efficiency, infrared light luminescent stability and portability of the near-infrared emitting light source based on quantum dot luminescent material, the utility model provides an infrared luminescent device and imaging instrument, diagnosis and treatment instrument and beauty instrument based on liquid infrared quantum dot light conversion element.

[0009] The technical scheme adopted by the utility model to solve the problem is:

[0010] An infrared luminescent device based on liquid infrared quantum dot light conversion element, comprising an excitation light source, a liquid infrared quantum dot light conversion element, a light transmission element, a refrigeration system, a light condensing element and a light guide mechanism.

[0011] The liquid infrared quantum dot light conversion element is arranged on one side of the light emitted by the excitation light source, and the liquid infrared quantum dot light conversion element, the light transmission element, the light collecting element and the light guide mechanism are arranged in sequence in the direction away from the excitation light source.

[0012] Further, the refrigeration system is arranged outside the liquid infrared quantum dot light conversion element.

[0013] Further, the light transmission element is provided with an incident light surface and an emergent light surface on two sides along the thickness direction of the light transmission element, and the incident light surface is arranged towards the excitation light source; the light transmission element satisfies: infrared light transmittance ≥ 50%, and visible light transmittance ≤ 80%.

[0014] Further, the refrigeration system is a fluid refrigeration device, and the fluid refrigeration device comprises a pipeline arranged outside the liquid infrared quantum dot light conversion element, and the pipeline is provided with a circulating cooling liquid.

[0015] Further, the light transmission element is directly in contact with the light emergent side of the liquid infrared quantum dot light conversion element.

[0016] Further, the infrared light emitting device further comprises a mounting base, the liquid infrared quantum dot light conversion element is arranged inside the mounting base, and a side wall of the mounting base is provided with an opening which is openable and closable and corresponds to the position of the liquid infrared quantum dot light conversion element.

[0017] Further, the liquid infrared quantum dot light conversion element comprises a light transmission container provided with an opening at the top and a quantum dot solution accommodated in the light transmission container.

[0018] Further, the light transmission container is a glass container; or the material of the light transmission container is at least one of organic glass, ordinary glass and quartz glass.

[0019] Further, the quantum dot solution comprises a transparent solvent and quantum dots dispersed in the transparent solvent.

[0020] Further, the infrared light emitting device further comprises an expander, and the expander is connected with the light emergent port of the light guide mechanism.

[0021] Based on the same design idea, the utility model also provides an imaging instrument, and the imaging instrument comprises the infrared light emitting device.

[0022] Based on the same design idea, the utility model also provides a diagnosis and treatment instrument, and the diagnosis and treatment instrument comprises the infrared light emitting device.

[0023] Based on the same design idea, the utility model also provides a beauty instrument, the beauty instrument includes the infrared light emitting device above.

[0024] In summary, the infrared light emitting device provided by the utility model has at least the following technical effects compared with the prior art:

[0025] The infrared light emitting device based on the liquid infrared quantum dot light conversion element has the following advantages. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 Fig. 1 is a structural schematic diagram of the infrared light emitting device based on the liquid infrared quantum dot light conversion element of the utility model;

[0027] Figure 2 Fig. 2 is an A-A cross-sectional schematic diagram of the infrared light emitting device based on the liquid infrared quantum dot light conversion element of the utility model; Figure 1

[0028] Figure 3 Fig. 4 is a schematic diagram of the infrared light emitting device based on the liquid infrared quantum dot light conversion element of the utility model when realizing the cooling function.

[0029] In the drawings, the meanings of the reference signs are as follows:

[0030] 1, excitation light source; 2, liquid infrared quantum dot light conversion element; 21, light-transmitting container; 22, quantum dot solution; 3, light-transmitting element; 4, refrigeration system; 5, light collecting element; 6, mounting base; 61, opening. DETAILED DESCRIPTION

[0031] In order to better understand and implement, the technical solutions in the utility model embodiments will be clearly and completely described below by combining the drawings in the utility model embodiments.

[0032] ​In the description of the utility model, it is necessary to explain, the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and so on indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawing, only for the convenience of describing the utility model and simplifying the description, and not indicating or implying that the indicated device or element must have a specific orientation, a specific orientation structure and operation, therefore, it cannot be understood as a limitation on the utility model.

[0033] 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 the utility model belongs. The terms used in the specification of the utility model herein are only for the purpose of describing specific embodiments and are not intended to limit the utility model.

[0034] Referring to Figures 1-3 As shown in the figure, according to the embodiment of the utility model, the infrared light emitting device based on liquid infrared quantum dot light conversion element includes excitation light source 1, liquid infrared quantum dot light conversion element 2, light transmission element 3, refrigeration system 4, light condensing element 5 and light guide mechanism (not shown in the figure). Liquid infrared quantum dot light conversion element 2 is arranged on one side of the light emitted by excitation light source 1, and in the direction away from excitation light source 1, liquid infrared quantum dot light conversion element 2, light transmission element 3, light condensing element 5 and light guide mechanism are arranged in sequence. Among them, excitation light source 1 can adopt near-infrared laser light source, near-infrared LED light source or short-wave infrared radiator and other light sources, which is used to emit excitation light when starting work. Compared with solid-state near-infrared quantum dots, liquid infrared quantum dot light conversion element 2 has the characteristics of high luminous efficiency, and its solvent can also play a heat dissipation role to prevent light decay. Light condensing element 5 can adopt Fresnel lens or convex lens and other optical lenses with converging effect on light, and the scattered infrared light emitted from liquid infrared quantum dot light conversion element 2 is converged through Fresnel lens or convex lens, thereby obtaining focused infrared light, then the focused infrared light is coupled into the light guide mechanism, and the light output is obtained through the light guide mechanism, thereby the irradiation object can be provided with high radiation intensity and concentrated infrared light irradiation.

[0035] Referring to Figure 2As shown, the light-transmitting element 3 is provided with a light-incident surface and a light-emitting surface on both sides along its thickness direction, and the light-incident surface is arranged towards the excitation light source 1. The light-transmitting element 3 satisfies: infrared light transmittance ≥ 50%, and visible light transmittance ≤ 80%. By arranging the light-transmitting element 3 on the light-emitting surface side of the liquid infrared quantum dot light conversion element 2, the purpose is to regulate the light emission of the infrared light-emitting device. Most of the infrared light emitted by the liquid infrared quantum dot light conversion element 2 can pass through the light-transmitting element 3 and be emitted from the infrared light-emitting device, thereby realizing the infrared light irradiation of the infrared light-emitting device; and when most of the visible light from the excitation light source 1 reaches the light-transmitting element 3, it can be reflected by the light-transmitting element 3 and will not be emitted from the infrared light-emitting device.

[0036] Based on the above structural design, if the infrared light-emitting device based on the liquid infrared quantum dot light conversion element is applied to some beauty instruments, face or eye particle devices, when the user uses the infrared light-emitting device to irradiate the face or eyes, the visible light will not be seen, thereby eliminating the discomfort such as dazzling caused by visible light irradiation during use, and improving the comfort of use.

[0037] Referring to Figure 3 As shown, in the technical solution of this embodiment, the refrigeration system 4 is arranged outside the liquid infrared quantum dot light conversion element 2. Specifically, by arranging the refrigeration system 4 outside the liquid infrared quantum dot light conversion element 2, the refrigeration cooling effect can be effectively achieved on the liquid infrared quantum dot light conversion element 2 and its surrounding area, the heat inside the infrared light-emitting device is promoted to be discharged, and the heat generated by the thermal radiation of the liquid infrared quantum dot light conversion element 2 is avoided to be accumulated in the liquid infrared quantum dot light conversion element 2 and its surrounding area, thereby improving the infrared light-emitting stability of the infrared light-emitting device based on the liquid infrared quantum dot light conversion element 2, prolonging the service life, and also being beneficial to promoting the lightweight design of the infrared light-emitting device.

[0038] Referring to Figure 3As shown in the preferred scheme of the present application, the refrigeration system 4 is a fluid refrigeration device, which comprises a heat-conducting element, the heat-conducting element is closely arranged outside the liquid infrared quantum dot light conversion element 2, and the heat-conducting element is provided with a refrigeration fluid circulating therein. As a preferred scheme, the fluid refrigeration device comprises a pipeline arranged around the outside of the liquid infrared quantum dot light conversion element 2, and the pipeline is provided with a cooling liquid circulating therein. Through the above structural design, the cooling liquid circulating in the pipeline can accelerate the removal of heat from the liquid infrared quantum dot light conversion element 2 and the surrounding area, avoid the accumulation of heat generated by the thermal radiation of the liquid infrared quantum dot light conversion element 2 in the liquid infrared quantum dot light conversion element 2 and its surrounding area, and improve the infrared light emission stability and the service life of the equipment. In addition, the cooling liquid in the pipeline can form a cooling liquid circulation, which can accurately, stably and flexibly control the temperature outside the liquid infrared quantum dot light conversion element 2, and can uniformly and efficiently cool, and can also reduce the demand for cooling liquid and energy consumption, and reduce the cost of the device.

[0039] Referring to Figure 2 and Figure 3 As shown in an optional scheme of the present application, the light-transmitting element 3 is in direct contact with the light-emitting side of the liquid infrared quantum dot light conversion element 2, so that the infrared light can be better collected and the shielding effect on the excitation light can be improved; and by emitting excitation light, the liquid infrared quantum dot light conversion element 2 can be repeatedly excited, further improving the light-emitting efficiency of the infrared light-emitting device.

[0040] Referring to Figure 1 and Figure 2 As shown in an optional scheme of the present application, the infrared light-emitting device based on the liquid infrared quantum dot light conversion element further comprises a mounting base 6, the liquid infrared quantum dot light conversion element 2 is arranged inside the mounting base 6, and the side wall of the mounting base 6 is provided with an opening 61 which can be opened and closed and corresponds to the position of the liquid infrared quantum dot light conversion element 2.

[0041] Referring to Figure 2 As shown in a preferred embodiment of the present application, the liquid infrared quantum dot light conversion element 2 comprises a light-transmitting container 21 and a quantum dot solution 22, and the quantum dot solution 22 is contained in the inside of the light-transmitting container 21. The top of the light-transmitting container 21 is provided with an opening for facilitating the operator to add, reduce and replace the quantum dot solution 22 of the liquid infrared quantum dot light conversion element 2.

[0042] Optionally, the light-transmitting container 21 adopts a square transparent container, and the front and rear sides of the container are larger area sides. One side faces the excitation light source 1 and is an incident light surface, and the other side faces the light-transmitting element 3 and is an emergent light surface.

[0043] Further, the light-transmitting container 21 can adopt a cuvette, the quantum dot solution 22 in the cuvette is not contaminated, can be repeatedly used, and can be applied to other researches.

[0044] In an alternative of the embodiment, the quantum dot solution 22 comprises a transparent solvent and quantum dots dispersed in the transparent solvent.

[0045] In an alternative of the embodiment, the infrared light-emitting device based on the liquid infrared quantum dot light-conversion element further comprises an expander (not shown in the figure) connected with the light outlet of the light guide mechanism.

[0046] Based on the same design idea, the utility model provides an embodiment of imaging instrument, the imaging instrument includes the infrared light-emitting device based on liquid infrared quantum dot light-conversion element described in above embodiment.

[0047] Based on the same design idea, the utility model provides an embodiment of imaging instrument, the imaging instrument includes the infrared light-emitting device based on liquid infrared quantum dot light-conversion element described in above embodiment.

[0048] Based on the same design idea, the utility model provides an embodiment of imaging instrument, the imaging instrument includes the infrared light-emitting device based on liquid infrared quantum dot light-conversion element described in above embodiment.

[0049] The technical means disclosed in the utility model scheme is not only limited to the technical means disclosed in the above-mentioned embodiment, but also includes the technical scheme composed of any combination of the above technical features. It should be noted that for ordinary skilled persons in the art, without departing from the principle of the utility model, a number of improvements and refinements can be made, and these improvements and refinements are also considered within the protection scope of the utility model.

Claims

1. An infrared light-emitting device based on a liquid infrared quantum dot light-converting element, characterized in that, It includes an excitation light source, a liquid infrared quantum dot light-converting element, a light-transmitting element, a cooling system, a light-concentrating element, and a light-guiding mechanism; The liquid infrared quantum dot light-converting element is disposed on one side of the excitation light source and along a direction away from the excitation light source. The liquid infrared quantum dot light-converting element, the light-transmitting element, the light-focusing element, and the light-guiding mechanism are arranged in sequence. The cooling system is located on the outside of the liquid infrared quantum dot light-converting element; The 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 light-transmitting element satisfies the following requirements: infrared light transmittance ≥ 50%, visible light transmittance ≤ 80%.

2. The infrared light-emitting device according to claim 1, characterized in that, The refrigeration system is a fluid refrigeration device, which includes a heat-conducting element disposed outside the liquid infrared quantum dot light-converting element, and a circulating refrigeration fluid is disposed in the heat-conducting element.

3. The infrared light-emitting device according to claim 1, characterized in that, The light-transmitting element is disposed between the liquid infrared quantum dot light-converting element and the light-emitting port or at the light-emitting port.

4. The infrared light-emitting device according to claim 1, characterized in that, The infrared light-emitting device also includes a mounting base, and the liquid infrared quantum dot light-converting element is disposed inside the mounting base. The side wall of the mounting base has an opening that can be opened and closed and corresponds to the position of the liquid infrared quantum dot light-converting element.

5. The infrared light-emitting device according to claim 1, characterized in that, The liquid infrared quantum dot light-converting element includes a light-transmitting container with an opening at the top and an infrared quantum dot solution contained inside the light-transmitting container.

6. The infrared light-emitting device according to claim 5, characterized in that, The light-transparent container is a glass container; or, the light-transparent container is made of at least one of plexiglass, ordinary glass, and quartz glass.

7. The infrared emitting device according to claim 5, characterized in that, The infrared quantum dot solution comprises a transparent solvent and infrared quantum dots dispersed in the transparent solvent.

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 guiding mechanism.

9. An imager, characterized in that, Including the infrared emitting device as described in any one of claims 1-8.

10. A diagnostic and therapeutic instrument, characterized in that, Including the infrared emitting device as described in any one of claims 1-8.

11. A beauty device, characterized in that, Including the infrared emitting device as described in any one of claims 1-8.

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