Mid-infrared emitting lens and its manufacturing process

Abstract

The present invention relates to a method for manufacturing a mid-infrared lens, which comprises the following steps: placing a lens in the path of a far-infrared ray source, whereupon the lens can receive the far-infrared rays; immersing the lens in a curing liquid, so that the curing liquid coats the lens, which curing liquid is a stirred mixture of silicone and isopropanol or a stirred mixture of silicone and methanol, and a far-infrared material or a far-infrared composite material is further added to the curing liquid; placing the lens coated with the curing liquid in a drying space to dry, so that the curing liquid dries and cures to form a cured layer on the surface of the lens.The temperature of the drying room is between 80 and 120°C, and the drying time is between 1 and 10 hours.

Description

Title of the invention: Mid-infrared emitting lens and method for manufacturing the same Background of the invention (a) Field of the invention

[0001] The present invention relates to a mid-infrared lens and a method of manufacturing the same. (b) Description of the prior art

[0002] According to ISO20473 classification, the wavelength of near infrared radiation is between 0.78 and 3 pm (micrometers), the wavelength of mid-infrared radiation is between 3 and 50 pm (micrometers), and the wavelength of far-infrared radiation is between 50 and 1000 pm (micrometers); among which mid-infrared radiation having a wavelength between 4 and 14 pm can resonate with molecules in the human body, thereby facilitating the dilation of blood vessels to allow unimpeded blood circulation, facilitating metabolism, and further increasing the body's immunity. This infrared wavelength range is called the "growth ray" range.There are currently a number of glasses on the market with a far infrared effect; however, the far infrared effect of the glasses is unable to directly affect the eyeballs. In addition, the effect of far infrared wavelengths is less than that of mid-infrared.

[0003] Taiwan Patent No. 1293287 discloses a "method for manufacturing an infrared irradiating lens", which discloses a far infrared irradiating mixture of high molecular weight polymer plastics, including a ceramic powder, a dispersing agent, a plasticizer, and PET (polyethylene terephthalate) plastic granules, which are thoroughly mixed together in a molten state, after which the liquid mixture containing the far infrared material is injected into a mold, and the finished lens product is produced after demolding. In addition, the finished lens product, which has undergone uniform mixing and injection molding, is provided with a permanent far infrared irradiating function.

[0004] Although the manufacturing method of the above-described patent directly produces a lens having a far infrared irradiation effect, however, during the manufacturing process, due to uneven dispersion of the ceramic powder and the plastic granules, it is possible that lenses having a poor far infrared or mid-infrared irradiation effect, or the lens has poor transparency. Summary of the invention

[0005] The present invention provides a method of manufacturing a mid-infrared lens, which comprises placing a lens and a first far-infrared radiation source together in an operational space, and carrying out heating to a temperature between 40 and 115°C, the heating time being between 1 and 3 hours, thereby enabling the lens to receive far-infrared rays;immersing the lens in a curing liquid, so that the curing liquid coats the lens while the coating thickness is controlled between 1 and 3 micrometers, the curing liquid being a stirred mixture of silicone and isopropanol or a stirred mixture of silicone and methanol, further a far infrared material or a far infrared composite material is added to the curing liquid, and the far infrared composite material is a mixture of a far infrared material and zinc oxide (ZnO); placing the lens coated with the curing liquid in a drying space to dry, so that the curing liquid dries and cures to form a cured layer on the surface of the lens, the temperature of the drying space being between 80 and 120°C, and the drying time being between 1 and 10 hours. ;

[0006] The present invention further discloses a mid-infrared lens manufactured using the method described above.

[0007] Furthermore, the far infrared material is any of the chemicals listed below: magnesium oxide (MgO), calcium oxide (CaO), barium oxide (BaO), zirconium dioxide (ZrO2), titanium dioxide (TiO2), chromium oxide (Cr2O3), manganese dioxide (MnO2), iron oxide (Fe2O3), aluminum oxide (Al2O3), a carbide, a silicide, a boride, a nitride, tantalum (Ta), molybdenum (Mo), tungsten (W), iron (Fe), nickel (Ni), platinum (Pt), copper (Cu), and gold (Au). And the solid weight content of the silicone in the curing liquid is between 19% and 35%.

[0008] Furthermore, a stepwise heating procedure for the lens receiving infrared rays from the first far infrared radiation source gradually raises the temperature from 40 to 115°C during a heating time of 1 to 3 hours. In a stepwise heating procedure for raising the temperature from a low temperature to a high temperature, each step of heating is maintained for a certain period of time.

[0009] In addition, a procedure for direct temperature rise of the lens receiving the infrared rays from the first far infrared radiation source directly raises the temperature from 40 to 115°C during a heating time of 1 to 3 hours. The temperature is directly raised from a low temperature to a high temperature, and the maximum temperature is maintained for a certain period of time.

[0010] For example, in the step heating procedure, while the temperature is raised to 115°C, the temperature is maintained for 10 minutes for each 10°C temperature rise until the temperature has reached 115°C; and, in the direct temperature rise method, when the temperature is raised to 115°C, the temperature is directly raised to 115°C, and then the temperature is maintained at 115°C for 1 to 3 hours. The embodiments with a two-temperature rise procedure, described above, constitute only the preferred embodiments of the present invention, and do not limit the spirit and scope of the embodiments of the invention. Therefore, simple equivalent modifications and changes to the claims as set forth in the present invention and the contents of the description all fall within the scope covered in the present invention.

[0011] Further, several of the first far infrared radiation sources are placed in the operational space surrounding the lens.

[0012] Further, a second far infrared radiation source is disposed in the drying space, enabling the lens to receive far infrared rays emitted by the second far infrared radiation source during the drying process.

[0013] Further, evaporative deposition is performed on the cured layer, which evaporative deposition comprises: evaporatively depositing a thin film layer having a first refractive index, and evaporatively depositing a thin film layer having a second refractive index on the thin film layer having a first refractive index, which operating process involving evaporative deposition of the thin film layer having a first refractive index and the thin film layer having a second refractive index is successively performed once or several times; finally again evaporatively depositing the thin film layer having a first refractive index on the thin film layer having a second refractive index.The refractive index of the thin film layer having a first refractive index is lower than the refractive index of the thin film layer having a second refractive index.

[0014] Further, the refractive index of the thin film layer having a first refractive index is between 1.46 and 1.98, and the refractive index of the thin film layer having a second refractive index is between 2.15 and 2.76.

[0015] Further, the thin film layer having a first refractive index is one of the following: a silicon oxide thin film layer, a silicon dioxide thin film layer, and a composite thin film layer of silicon oxide and silicon dioxide. The thin film layer having a second refractive index is one of the following: a zirconium dioxide thin film layer, a titanium dioxide thin film layer, a di-titanium trioxide thin film layer, and a tri-titanium pentoxide thin film layer.

[0016] Further, a thin film layer of indium tin oxide is evaporatively deposited between the thin film layer having a first refractive index and the thin film layer having a second refractive index.

[0017] Furthermore, before the evaporation deposition of the thin film layer having a first refractive index and the thin film layer having a second refractive index on the cured layer, the evaporation deposition target material and the first far infrared ray source are first placed together in the operating space, and heating at a temperature of 40 to 115°C is carried out. The heating time is 1 to 3 hours, which allows the target material to receive the far infrared rays.

[0018] Furthermore, the weight proportion of the far infrared material or the far infrared composite material in the hardening liquid is between 1% and 5%.

[0019] Furthermore, the weight proportion of zinc oxide (ZnO) in the far infrared composite material is between 20% and 40%.

[0020] The technical characteristics described above have the following advantages: 1. The present invention adopts the method of placing the lens in far infrared ray sources, which endows the lens with the function of releasing mid-infrared rays, which are used to facilitate blood circulation in the eyes. 2. The present invention adopts the method of coating the lens with a curing liquid, and a far infrared material or a far infrared composite material is added to the curing liquid, so that after drying, the cured layer contains the far infrared material, thereby prolonging the time during which the lens can release mid-infrared rays. 3. The evaporation of the present invention deposits a thin film layer having a first refractive index, a thin film layer having a second refractive index, and a thin film layer of indium tin oxide on the cured layer, and uses the plurality of thin film layers to block harmful light radiation, including blue light and infrared rays, and absorbs reflected ultraviolet rays, thus achieving the function of protecting a user's eyes.

[0021] To enable a better understanding of said objectives, structures, features and effects, as well as the technology and methods used in the present invention and the effects achieved, there is presented below a brief description of the drawings, followed by a detailed description of the preferred embodiments. Brief description of the drawings

[0022] [Fig. 1] [Fig. 1] is a flowchart of the manufacturing process of a mid-infrared lens of the present invention.

[0023] [Fig.2] [Fig.2] is a structural schematic view of a cured layer of the vapor-deposited mid-infrared lens with a thin film layer having a first refractive index, a thin film layer having a second refractive index, and a thin film layer having a first refractive index, in accordance with the present invention.

[0024] [Fig.3] [Fig.3] is a structural schematic view of the cured layer of the vapor-deposited mid-infrared lens with the thin film layer having a first refractive index, an indium tin oxide thin film layer, the thin film layer having a second refractive index, and the thin film layer having a first refractive index, in accordance with the present invention.

[0025] [Fig.4] [Fig.4] is a structural schematic view of the cured layer of the vapor-deposited mid-infrared lens with the thin film layer having a first refractive index, the thin film layer having a second refractive index, the thin film layer of indium tin oxide, and the thin film layer having a first refractive index, in accordance with the present invention.

[0026] [Fig.5] [Fig.5] is a structural schematic view of the cured layer of the vapor-deposited mid-infrared lens with the thin film layer having a first refractive index, the thin film layer having a second refractive index, the thin film layer having a first refractive index, the thin film layer having a second refractive index, and the thin film layer having a first refractive index, in accordance with the present invention.

[0027] [Fig.6] [Fig.6] is a structural schematic view of the cured layer of the evaporatively deposited mid-infrared lens with the thin film layer having a first refractive index, the indium tin oxide thin film layer, the thin film layer having a second refractive index, the thin film layer having a first refractive index, the thin film layer having a second refractive index, and the thin film layer having a first refractive index, in accordance with the present invention.

[0028] [Fig.7] [Fig.7] is a structural schematic view of the hardened layer of the An evaporatively deposited mid-infrared lens with the thin film layer having a first refractive index, the thin film layer having a second refractive index, the thin film layer of indium tin oxide, the thin film layer having a first refractive index, the thin film layer having a second refractive index, and the thin film layer having a first refractive index, in accordance with the present invention.

[0029] [Fig.8] [Fig.8] is a schematic view showing a lens placed in a operational space surrounded by a plurality of far infrared radiation sources during the manufacturing process in accordance with the present invention.

[0030] [Fig.9] [Fig.9] is a schematic view of the application of lenses for in mid-infrared rays of the present invention.

[0031] [Fig. 10] [Fig. 10] is a graph showing the light penetration rate visible through the mid-infrared lenses of the present invention. Detailed Description of Preferred Embodiments

[0032] Reference is made to Figures 1 and 2, which respectively show a flowchart of a manufacturing method for a mid-infrared lens and a mid-infrared lens 1 produced by using the manufacturing method, wherein the manufacturing method for the mid-infrared lens 1 is as follows: placing a lens 2 and a first far-infrared ray source A together in an operating space, and heating them to a temperature of 40 to 115°C; the heating time is 1 to 3 hours, thereby enabling the lens 2 to receive far-infrared rays. The lens 2 can be repeatedly placed in the operating space to repeatedly heat them and enable the lens 2 to repeatedly receive the far-infrared rays.An embodiment of the manufacturing method of the present invention also comprises arranging a plurality of the far infrared radiation sources A in the operating space to surround the lens 2 (as shown in [Fig. 8]). The lens 2 is then immersed in a curing liquid, so that the curing liquid coats the lens 2. The curing liquid comprises a stirred mixture of between 19 and 33 parts by weight of silicone and between 62 and 76 parts by weight of isopropanol, or a stirred mixture of between 19 and 33 parts by weight of silicone and between 62 and 76 parts by weight of methanol. In addition, a far infrared material or a far infrared composite material is added to the curing liquid, which far infrared composite material is a . Mixture of a material for far infrared and zinc oxide (ZnO). The weight proportion of the material for far infrared or the composite material for far infrared in the hardening liquid is between 1% and 5%; the weight proportion of zinc oxide (ZnO) in the composite material for far infrared is between 20% and 40% (for example 30%). The material for far infrared is any one of the substances listed below: magnesium oxide (MgO), calcium oxide (CaO), barium oxide (BaO), zirconium dioxide (ZrO2), titanium dioxide (TiO2), chromium oxide (Cr2O3), manganese dioxide (MnO2), iron oxide (Fe2O3), aluminum oxide (A12O3), a carbide, a silicide, a boride, a nitride, tantalum (Ta), molybdenum (Mo), tungsten (W), iron (Fe), nickel (Ni), platinum (Pt), copper (Cu), and gold (Au).And the solid weight content of the silicone in the curing liquid is between 19% and 35%. The lens 2 coated with the curing liquid is then placed in a drying space to dry, so that the curing liquid dries and cures to form a cured layer 3 on the surface of the lens 2. The temperature of the drying space is between 80 and 120°C, and the drying time is between 1 and 10 hours; the thickness of the cured layer 3 is between 1 and 3 micrometers. The mid-infrared lens 1 is thus produced. In addition, a second far-infrared radiation source may be arranged inside the drying space.

[0033] A gradual heating procedure of the lens 1 receiving far infrared rays from the first far infrared radiation source A gradually raises the temperature from 40 to 115°C during a heating time of 1 to 3 hours. Two heating procedures can be used, including a staged heating procedure for raising the temperature from a low temperature to a high temperature, in which each stage of heating is maintained for a certain period of time, or the temperature is directly raised from a low temperature to a high temperature, and the maximum temperature is maintained for a certain period of time.For example, in the step heating procedure, while the temperature is raised to 115°C, the temperature is maintained for 10 minutes for each 10°C rise in temperature until the temperature has reached 115°C; and, in the direct temperature rise method, when the temperature is raised to 115°C, the temperature is directly raised to 115°C, and then the temperature is maintained at 115°C for 1 to 3 hours. The embodiments with a two-temperature rise procedure, described above, constitute only the preferred embodiments of the present invention, and do not limit the spirit and scope of the embodiments of the invention. Therefore, modifications and changes . Simple equivalents made to the claims as set forth in the present invention and the content of the description all fall within the scope covered by the present invention.

[0034] Referring to Figures 2 to 4, evaporation deposition steps are further performed on the cured layer 3 of the surface of the mid-infrared lens 1, whereby evaporation deposition of a plurality of thin film layers is performed. The plurality of thin film layers include a thin film layer having a first refractive index 4 and a thin film layer having a second refractive index 5, wherein the refractive index of the thin film layer having a first refractive index 4 is lower than the refractive index of the thin film layer having a second refractive index 5. The target material of the thin film layer having a first refractive index 4 is one of the following: a silicon oxide thin film layer, a silicon dioxide thin film layer, and a composite thin film layer of silicon oxide and silicon dioxide.And the refractive index of the thin film layer having a first refractive index 4 is between 1.46 and 1.98. The target material of the thin film layer having a second refractive index 5 is one of the following: a zirconium dioxide thin film layer, a titanium dioxide thin film layer, a di-titanium trioxide thin film layer, and a tri-titanium pentoxide thin film layer. And the refractive index of the thin film layer having a second refractive index 5 is between 2.15 and 2.76. .

[0035] When three vapor-deposited thin film layers are used as an example, the vapor-deposition steps include: first vapor-depositing the thin film layer having a first refractive index 4 onto the cured layer 3, then vapor-depositing the thin film layer having a second refractive index 5 onto the thin film layer having a first refractive index 4, finally again vapor-depositing the thin film layer having a first refractive index 4 onto the thin film layer having a second refractive index 5.When five vapor-deposited thin-film layers are used as an example, the vapor-deposition steps include: successively vapor-depositing the thin-film layer having a first refractive index 4, the thin-film layer having a second refractive index 5, the thin-film layer having a first refractive index 4, and the thin-film layer having a second refractive index 5, onto the cured layer 3, and then finally vapor-depositing the thin-film layer having a first refractive index 4 onto the thin-film layer having a second refractive index 5 again. When seven vapor-deposited thin-film layers are used as an example, the vapor-deposition steps include: success- . sively the evaporative deposition of the thin film layer having a first refractive index 4, the thin film layer having a second refractive index 5, the thin film layer having a first refractive index 4, the thin film layer having a second refractive index 5, the thin film layer having a first refractive index 4, and the thin film layer having a second refractive index 5, on the cured layer 3, and finally again the evaporative deposition of the thin film layer having a first refractive index 4 on the thin film layer having a second refractive index 5. In other words, before the final evaporative deposition of the thin film layer having a first refractive index 4, the evaporative deposition of the thin film layers having a first refractive index 4 and the thin film layers having a second refractive index 5 may be carried out once or several times.Additionally, a thin film layer of indium tin oxide 6 is deposited by evaporation between the thin film layer having a first refractive index 4 and the thin film layer having a second refractive index 5.

[0036] Before carrying out the evaporative deposition steps described above, the target material can be directly used for evaporative deposition, but also the target material and the first far infrared radiation source A can first be placed together in the operational space for heating to a temperature between 40 and 115°C. The heating time is between 1 and 3 hours, thus allowing the target material to receive the far infrared rays, after which the target material is used for evaporative deposition.

[0037] Reference is made to [Fig. 2], which shows the thin film layer having a first refractive index 4, the thin film layer having a second refractive index 5, and the thin film layer having a first refractive index 4, successively deposited by evaporation on the hardened layer 3 of the lens 2. Reference is made to [Fig. 3] and [Fig. 4], which show the indium tin oxide thin film layer 6 deposited by evaporation respectively between the thin film layer having a first refractive index 4 and the thin film layer having a second refractive index 5 and between the thin film layer having a second refractive index 5 and the thin film layer having a first refractive index 4.

[0038] Reference is made to [Fig. 5], which shows the thin film layer having a first refractive index 4, the thin film layer having a second refractive index 5, the thin film layer having a first refractive index 4, the thin film layer having a second refractive index 5, and the thin film layer having a first refractive index 4, successively deposited by evaporation on the cured layer 3 of the lens 2. Reference is made to [Fig. 6] and [Fig. 7], which show the thin film layer of indium tin oxide 6 deposited by evaporation respectively between the thin film layer having a first refractive index 4 and the thin film layer having a second refractive index 5 and between the thin film layer having a second refractive index 5 and the thin film layer having a first refractive index, after which the thin film layers having a second refractive index 5 and the thin film layers having a first refractive index are again respectively successively deposited by evaporation thereon.

[0039] Reference is made to [Fig.9], which shows a user wearing an eyeglass frame, which eyeglass frame is equipped with two of the mid-infrared lenses 1. The several thin-film layers on the lens 2 are used to provide the mid-infrared lenses 1 with the function of blocking harmful light, such as blue light and infrared light, and absorbing reflected ultraviolet radiation, thereby protecting a user's eyes from harm. In addition, the mid-infrared rays irradiated from the lens 2 are used to facilitate blood circulation in the eyes to accelerate metastasis.

[0040] The mid-infrared lens 1 was sent to the Taiwan Industrial Technology Research Institute for measurement of the average spectral emissivity between 8 and 14 pm, which measurement was based on the standard test methods ASTM-E1933-99a. The results of the measurement data are shown in Table 1. [Table 1] Table 1: Average spectral emissivity measurement data between 8 and 14 pm of a mid-infrared lens Measurement standard Sample Temperature °C Average spectral emissivity between 8 and 14 pm ASTM lens 40.3 0.99

[0041] The test lens manufactured according to the method disclosed in the present invention was formed into an eyeglass frame. The test lens had a convex surface and a concave surface, among which the convex surface was the outer surface and the concave surface was the inner surface of the eyeglass frame described above. Since a spectrometer was used to measure the reflected wavelengths, during the measurement, the concave surface of the test lens was therefore used blackened to reflect light to the spectrometer, and a marker was used to blacken the concave surface. After the measurement, the spectral emissivity between 8 and 14 pm of the test lens was 0.99 (99%), which proves that the method for manufacturing the mid-infrared lens of the present invention is indeed capable of manufacturing a lens with high emissivity.

[0042] Reference is made to [Fig. 10], an experiment on the penetration rate of the visible light through a transparent mid-infrared lens of the present invention, and it was found that the penetration rate of visible light having wavelengths between 400 and 780 nanometers was greater than 90%, thus proving that the mid-infrared lens of the present invention has adequate high transparency.

[0043] In summary, the operation, use, and effectiveness achieved by practicing the present invention can be clearly understood from the above description of the embodiments. However, it should of course be understood that the embodiments described herein are merely illustrative of the principles of the invention, and that a wide variety of modifications thereto may be made by those skilled in the art without departing from the spirit and scope of the invention as set forth in the following claims.

Claims

Claims

1. A method of manufacturing a mid-infrared emitting lens, comprising: placing a lens and a first far infrared radiation source together in an operational space, and heating to a temperature of between 40 and 115°C, the heating time being between 1 and 3 hours, thereby enabling the lens to receive far infrared rays; immersing the lens in a hardening liquid, so that the hardening liquid coats the lens while the coating thickness is controlled between 1 and 3 micrometers, the hardening liquid being a stirred mixture of silicone and isopropanol or a stirred mixture of silicone and methanol, further a far infrared material or a far infrared composite material is added to the hardening liquid, and the far infrared composite material is a mixture of a far infrared material and zinc oxide (ZnO); placing the lens coated with the curing liquid in a drying space to dry, so that the curing liquid dries and cures to form a cured layer on the surface of the lens, the temperature of the drying space being between 80 and 120°C, and the drying time being between 1 and 10 hours, wherein the far infrared material is any of the chemicals listed below: magnesium oxide (MgO), calcium oxide (CaO), barium oxide (BaO), zirconium dioxide (ZrO2), titanium dioxide (TiO2), chromium oxide (Cr2O3), manganese dioxide (MnO2), iron oxide (Fe2O3), aluminum oxide (Al2O3), a carbide, a silicide, a boride, a nitride, tantalum (Ta), molybdenum (Mo), tungsten (W), iron (Fe), nickel (Ni), platinum (Pt), copper (Cu), and gold (Au);and the solid weight content of the silicone in the curing liquid is between 19% and 35%.;

2. A method of manufacturing a mid-infrared lens according to claim 1, wherein a stepwise heating procedure of the lens receiving the far-infrared rays from the first far-infrared ray source gradually raises the temperature from 40 to 115°C during a heating time of 1 to 3 hours; a staged temperature ramp-up procedure raises the temperature from a low temperature to a high temperature, in which each stage of temperature ramp-up is maintained for a certain period of time.

3. A method of manufacturing a mid-infrared lens according to claim 1, wherein a direct heating procedure of the lens receiving infrared from the first far-infrared ray source directly raises the temperature from 40 to 115°C during a heating time of 1 to 3 hours; the temperature is directly raised from a low temperature to a high temperature, and the maximum temperature is maintained for a certain period of time.

4. A method of manufacturing a mid-infrared lens according to claim 1, wherein a plurality of far-infrared radiation sources are placed in the operating space surrounding the lens.

5. A method of manufacturing a mid-infrared lens according to claim 1, wherein a second far-infrared ray source is provided in the drying space, thereby enabling the lens to receive far-infrared rays emitted from the second far-infrared ray source during the drying process.

6. A method for manufacturing a mid-infrared lens according to claim 1, wherein vapor deposition is further performed on the cured layer, and the vapor deposition comprises: vapor deposition of a thin film layer having a first refractive index; vapor deposition of a thin film layer having a second refractive index on the thin film layer having a first refractive index; successively performing once or more of the operating process involving vapor deposition of the thin film layer having a first refractive index and the thin film layer having a second refractive index; finally again vapor deposition of the thin film layer having a first refractive index on the thin film layer having a second refractive index; wherein the refractive index of the thin film layer having a first refractive index is lower than the refractive index of the thin film layer having a second refractive index.

7. A method of manufacturing a mid-infrared lens according to claim 6, wherein the refractive index of the thin film layer having a first refractive index is 1.46 to 1.98, and the refractive index of the thin film layer having a second refractive index is 2.15 to 2.

76.

8. A method of manufacturing a mid-infrared lens according to claim 6, wherein the thin film layer having a first refractive index is one of the following: a silicon oxide thin film layer, a silicon dioxide thin film layer, and a composite thin film layer of silicon oxide and silicon dioxide; the thin film layer having a second refractive index is one of the following: a zirconium dioxide thin film layer, a titanium dioxide thin film layer, a di-titanium trioxide thin film layer, and a tri-titanium pentoxide thin film layer.

9. A method of manufacturing a mid-infrared lens according to claim 6, wherein a thin film layer of indium tin oxide is further evaporated between the thin film layer having a first refractive index and the thin film layer having a second refractive index.

10. A method for manufacturing a mid-infrared lens according to claim 6, wherein, before vapor deposition of the thin film layer having a first refractive index and the thin film layer having a second refractive index on the cured layer, the vapor deposition target material and the first far-infrared ray source are first placed together in the operating space, and heating at a temperature of 40 to 115°C is carried out; the heating time is 1 to 3 hours, thereby enabling the target material to receive the far-infrared rays.

11. A method of manufacturing a mid-infrared lens according to claim 1, wherein the weight proportion of the far-infrared material or the far-infrared composite material in the curing liquid is 1% to 5%.

12. A method of manufacturing a mid-infrared lens according to claim 1, wherein the weight proportion of zinc oxide (ZnO) in the far infrared composite material is between 20% and 40%.

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