KR20190118383A - Smart glasses, glassess, car parking assistant camera, experimental safety goggle, sports goggles and motocycle protective helmet having micro heater - Google Patents

Abstract

Disclosed are smart glasses, eyeglasses, a car parking assistant camera, experimental safety goggles, sports goggles, and a protective helmet of a motorcycle provided with a micro-heater. Smart glasses provided with a micro-heater according to an embodiment of the present invention comprise: a support frame; an image optical unit coupled to the support frame to provide image information and composed of a transparent material; the micro-heater formed on at least one surface of the image optical unit; and a control unit connected to the micro-heater and applying a predetermined current to the micro-heater to remove moisture generated on a surface of the image optical unit, wherein the micro-heater has fine metallic patterns, invisible to naked eyes, formed in a predefined shape by using a laser and organic metallic ion ink and raises the temperature to remove any moisture when the predetermined current is applied by the control unit. The present invention can maintain high visibility by removing moisture under any environment.

Description

Smart glasses with micro heaters, glasses, car parking assistance cameras, laboratory goggles, sports goggles, motorcycle protection helmets

The present invention relates to smart glasses, and more particularly, to a smart glass equipped with a micro-heater manufactured by using a laser filamentation phenomenon, glasses, a car parking assist camera, laboratory goggles, sports goggles, motorcycle protective helmet will be.

With the rapid expansion of the wearable market, various smart devices have been applied in the form of wearables and popularized. In particular, smart glass, one of wearable devices, is expected to be used in various fields. Smart glasses are being developed specifically for various industries.

In addition, smart glasses can be combined with augmented reality technology to provide a variety of information to users more effectively. Augmented reality combines a virtual world with additional information in real time into a real world. Various user interfaces can be provided using the smart glass device, and accordingly, various studies have been conducted. For example, Korean Patent Publication No. 10-1812227 proposes an augmented reality based virtual input interface.

However, smart glasses are inconvenient for users to remove moisture or water when the imaging optics are wet or wet in a humid environment.

Korean Patent Publication No. 10-1812227, Date of Publication December 27, 2017

In order to solve the problems of the prior art, an object of the present invention is to sinter a nanomaterial using a laser filamentation phenomenon to form a fine pattern in the form of a mesh on the surface of a transparent material, such as glass, depending on the humidity The present invention provides a smart glass equipped with a micro heater, glasses, a car parking assist camera, an experimental safety goggle, a sports goggle, and a motorcycle protective helmet, which is configured to apply an electric current to the formed mesh-shaped fine pattern.

However, the object of the present invention is not limited to the above objects, and may be variously expanded within a range without departing from the spirit and scope of the present invention.

In order to achieve the object of the present invention, the smart glass is provided with a micro heater according to an aspect of the present invention support frame; An imaging optical unit coupled to the support frame to provide image information and formed of a transparent material; A micro heater formed on at least one surface of the imaging optical unit; And a control unit connected to the micro heater to apply a predetermined current to the micro heater to remove moisture generated on the surface of the image optical unit, wherein the micro heater uses a laser and a metal organic ion ink. The pattern is a fine pattern of a metal that is invisible to the eye and formed in a predetermined shape, and when a predetermined current is applied from the controller, the temperature rises to remove the moisture.

In addition, the micro heater is an ink coating step of forming a coating layer by applying a metal organic ion ink on the transparent material; Heating the substrate on which the coating layer is formed to generate a plurality of metal nano seeds in the coating layer, wherein the seed layer has a predetermined thermal conductivity; And a Bessel beam is irradiated to a predetermined patterning region of the coating layer having the predetermined thermal conductivity to sequentially manufacture the metal nanoseed in the patterning region to form a fine pattern.

In the pattern shape step, the laser beam generated from the laser may be converted into the vessel beam, and the converted vessel beam may be irradiated to the predetermined patterning area of the coating layer by passing through the focusing optical element.

In addition, in the pattern shape step, metals in the patterning region heated by the vessel beam grow in size as the seed grows and are bonded to each other, so as to be sintered with a laser wavelength that cannot be discerned by the eye. A pattern can be formed.

In addition, the method according to the present invention may further include a seed removing step of removing the metal organic ion ink and the metal nado seed in a region not irradiated with the laser beam.

The control unit may further include an operation unit receiving a touch or push operation from a user; And a processor configured to control the application of a current to the micro heater according to a user's manipulation received from the manipulation unit.

The controller may include a sensor unit configured to measure an amount of temperature change or humidity around the image optical unit; And a processor controlling to apply current to the micro heater when the temperature change amount or the humidity measured by the sensor unit is equal to or greater than a predetermined threshold value.

The controller may include a sensor unit configured to measure an amount of change in capacitance of the surface of the image optical unit; And a processor that controls to apply a current to the micro heater when the amount of change in capacitance measured from the sensor unit is equal to or greater than a preset threshold.

In addition, the predetermined shape may include a mesh shape, a square shape, a circle shape, or a spiral shape.

Glasses according to another aspect of the invention the support frame; A lens coupled to the support frame and having a different thickness according to the frequency; A micro heater formed on at least one surface of the lens; And a control unit connected to the micro heater to apply a predetermined current to the micro heater to remove moisture generated on the surface of the lens, wherein the micro heater uses a laser and a metal organic ion ink. The pattern is a fine pattern of a metal that is invisible to the eye and formed in a predetermined shape, and when a predetermined current is applied from the controller, the temperature rises to remove the moisture.

Vehicle parking assistance camera according to another aspect of the present invention includes a support frame mounted to the rear of the vehicle; A lens provided in the support frame for photographing a subject; A micro heater formed on at least one surface of the lens; And a control unit connected to the micro heater to apply a predetermined current to the micro heater to remove moisture generated on the surface of the lens, wherein the micro heater uses a laser and a metal organic ion ink. The pattern is a fine pattern of a metal that is invisible to the eye and formed in a predetermined shape, and when a predetermined current is applied from the controller, the temperature rises to remove the moisture.

Experimental safety glasses according to another aspect of the present invention comprises a support frame formed to be in close contact with the user's face; Safety glasses coupled to the front of the support frame; A micro heater formed on at least one surface of the protective glasses; And a control unit connected to the micro heater to apply a predetermined current to the micro heater to remove moisture generated on the surface of the protective glasses, wherein the micro heater uses a laser and a metal organic ion ink. The pattern is a fine pattern of a metal that is invisible to the eye and formed in a predetermined shape, and when a predetermined current is applied from the controller, the temperature rises to remove the moisture.

Sports goggles according to another aspect of the invention the support frame; A lens coupled to the support frame for protecting the eye from predetermined light; A micro heater formed on at least one surface of the lens; And a control unit connected to the micro heater to apply a predetermined current to the micro heater to remove moisture generated on the surface of the lens, wherein the micro heater uses a laser and a metal organic ion ink. The pattern is a fine pattern of a metal that is invisible to the eye and formed in a predetermined shape, and when a predetermined current is applied from the controller, the temperature rises to remove the moisture.

Motorcycle protective helmet according to another aspect of the present invention includes a support frame surrounding the entire head of the driver; Safety glasses coupled to the front of the support frame, and rotated up and down; A micro heater formed on at least one surface of the eye shield; And a control unit connected to the micro heater to apply a predetermined current to the micro heater to remove moisture generated on the surface of the safety glasses, wherein the micro heater uses a laser and a metal organic ion ink. The pattern is a fine pattern of a metal that is invisible to the eye and formed in a predetermined shape, and when a predetermined current is applied from the controller, the temperature rises to remove the moisture.

As described above, the present invention uses a laser filamentation phenomenon to sinter the nanomaterial to form a fine pattern in a mesh shape on the surface of a transparent material such as glass, and apply current to the formed fine pattern of the mesh shape according to humidity. It can remove moisture in any environment and maintain high visibility.

In addition, since the present invention forms a fine metal pattern close to the optical wavelength by sintering the nanomaterial using the laser filamentation phenomenon, the device may not be recognized as an eye in a device such as glasses or a helmet, and thus may not act as an obstacle.

However, the effects of the present invention are not limited to the above effects, and may be variously extended within a range without departing from the spirit and scope of the present invention.

1A to 1B are views illustrating smart glasses equipped with a micro heater according to an embodiment of the present invention.
2 is a view for explaining the shape of the micro heater according to an embodiment of the present invention.
3 is a view for explaining the performance of the micro heater according to an embodiment of the present invention.
4 is a view showing a method for manufacturing a fine pattern according to an embodiment of the present invention.
5 to 8 are views for explaining a fine pattern manufacturing process according to an embodiment of the present invention.
9 is a view showing a pattern forming step according to an embodiment of the present invention.
10 is a view for explaining the principle of the Bessel beam generation according to an embodiment of the present invention.
11A to 11B are diagrams illustrating a micro pattern manufacturable using a vessel beam.
12 illustrates a fine pattern formed on a substrate according to an embodiment of the present invention.
13 is a view showing a method for manufacturing a fine pattern according to another embodiment of the present invention.

DETAILED DESCRIPTION The following detailed description of the invention refers to the accompanying drawings that show, by way of illustration, specific embodiments in which the invention may be practiced. These embodiments are described in sufficient detail to enable those skilled in the art to practice the invention. It should be understood that the various embodiments of the present invention are different but need not be mutually exclusive. For example, certain shapes, structures, and characteristics described herein may be embodied in other embodiments without departing from the spirit and scope of the invention with respect to one embodiment. In addition, it is to be understood that the location or arrangement of individual components within each disclosed embodiment may be changed without departing from the spirit and scope of the invention. The following detailed description, therefore, is not to be taken in a limiting sense, and the scope of the present invention, if properly described, is defined only by the appended claims, along with the full range of equivalents to which such claims are entitled. Like reference numerals in the drawings refer to the same or similar functions throughout the several aspects.

Hereinafter, with reference to the accompanying drawings will be described smart glasses, glasses, car parking assist camera, experimental safety glasses, sports goggles, motorcycle protective helmet equipped with a micro heater according to an exemplary embodiment of the present invention. Particularly, in the present invention, the nanomaterial is sintered using a laser filamentation phenomenon to form a fine pattern in a mesh shape on the surface of a transparent material such as glass, and to apply current to the formed fine pattern of the mesh shape according to humidity. A new solution is proposed.

At this time, in the present invention, by coating a metal organic ion ink on the surface of the image optical unit to provide the image information in smart glasses to form a coating layer and heat-treating the substrate on which the coating layer is formed to generate a metal nano seed on the coating layer, A fine metal pattern may be formed by irradiating a vessel beam to a predetermined patterning region of the coating layer to grow and sinter the metal nanoseed in the patterning region.

Here, smart glasses generally refer to glasses-type devices equipped with a see-through function and a computer, and are a type of wearable computer. Herein, a case in which the micro-heater is provided in the smart glass is described as an example, but the present invention is not limited thereto and may be applied to various devices such as glasses, a car parking assist camera, an experimental safety glasses, a sports goggle, a motorcycle protective helmet, and the like.

1A to 1B are views illustrating smart glasses equipped with a micro heater according to an embodiment of the present invention.

Referring to FIG. 1A, a smart glass according to an embodiment of the present invention may include a support frame 100, an imaging optical unit 200, a micro heater 300, and a controller 400.

The support frame 100 may be formed in a form that can be worn on the user's face.

The imaging optical unit 200 may be coupled to the support frame 100, and may provide various image information by being spaced apart from the user's eyes in a state where the human body is worn. The imaging optical unit 200 may be implemented as one or a plurality.

The micro heater 300 may be formed on at least one surface of the imaging optical unit 200 to remove moisture generated on the surface of the imaging optical unit. In this case, the micro heater 300 may be formed on either or both surfaces of the image optical unit.

The micro heater 300 is formed on the whole or part of one surface of the image optical unit 200, but is formed in the image optical unit 200 for providing the image information to the user should not be recognized by the eye. Therefore, the micro heater 300 should be formed in a fine pattern. In the present invention, sintering the nanomaterial by using a laser filamentation phenomenon, the line width of less than a laser wavelength, for example, 100 nm to 5 μm, which cannot be identified by eyes. To form a fine pattern having, but to form the fine pattern in a predetermined shape, for example, a mesh shape. In this case, the fine pattern is not limited only to the mesh shape, but may be formed in various shapes such as a square shape, a circular shape, and a spiral shape.

The controller 400 may provide image information to the image optical unit 200 or control the micro heater 300. Referring to FIG. 1B, the controller 400 may be configured to include a processor 410, a sensor unit 420, an operation unit 430, a power supply unit 440, and the like, to control the micro heater 300.

For example, the controller 400 receives the user's touch or push operation through the manipulation unit 410, and drives the power supply unit 440 to apply a current to the micro heater 300 to increase the temperature to thereby increase the temperature. Moisture generated on the surface of the 200 is removed.

As another example, the controller 400 measures the temperature change amount and the humidity around the imaging optical unit 200 through the sensor unit 420, that is, the temperature sensor and the humidity sensor, and the measured temperature change amount and the humidity are equal to or greater than a predetermined threshold value. The rear surface of the image optical unit 200 is removed by driving the power supply unit 440 to increase the temperature by applying a current to the micro heater 300. Here, the temperature change amount means a change amount of the temperature measured in the current cycle and the temperature measured in the previous cycle. Moisture is generated when the temperature variation is large, moving from the outdoor low temperature environment to the indoor high temperature environment.

As another example, when the controller 400 detects an amount of change in capacitance due to moisture generated on the surface of the image optical unit 200 through the sensor unit 420, that is, a capacitance touch sensor, the amount of change in detected capacitance is detected in advance. If the threshold value is greater than or equal to the threshold value, the power source 440 is driven to increase the temperature by applying a current to the micro heater 300 to remove moisture generated on the surface of the image optical unit 200.

Herein, the case in which the micro heater is formed as an image optical unit in the smart glass is described as an example. However, the present invention is not limited thereto, and the micro heater may be formed on the lens. It can also be provided in lenses, such as a goggle and a motorcycle protective helmet.

For example, 1) the glasses are connected to the support frame, the support frame, the lens is formed in a different thickness depending on the frequency, the micro heater formed on at least one surface of the lens and the micro heater, to remove moisture generated on the surface of the lens It includes a control unit for applying a predetermined current to the micro heater.

2) The car parking assist camera is provided on a support frame mounted on the rear of the vehicle, a support frame, connected to a lens for photographing a subject, a micro heater formed on at least one surface of the lens, and a micro heater, and is generated on the surface of the lens. It includes a control unit for applying a predetermined current to the micro heater to remove moisture.

3) the experiment goggles support frame formed to be in close contact with the user's face; Protective glasses coupled to the front surface of the support frame, a micro heater formed on at least one surface of the protective glasses; And a control unit connected to the micro heater to apply a predetermined current to the micro heater to remove moisture generated on the surface of the protective glasses.

4) the sports type goggles are coupled to the support frame, the support frame, a lens for protecting the eyes from a predetermined light, a micro heater formed on at least one surface of the lens; And a control unit connected to the micro heater to apply a predetermined current to the micro heater to remove moisture generated on the surface of the lens.

5) The motorcycle protective helmet includes a support frame surrounding the entire head of the driver, a safety glasses coupled to the front of the support frame, and rotated up and down, formed on at least one surface of the safety glasses; And a control unit connected to the micro heater and applying a predetermined current to the micro heater to remove moisture generated on the surface of the safety glasses.

The micro-heater formed in such glasses, a car parking assist camera, laboratory goggles, sports goggles, and a motorcycle protective helmet is a fine pattern of a metal that is indistinguishable from the eye, formed in a predetermined shape by using a laser and a metal organic ion ink. If a predetermined current is applied from the temperature rises to remove the moisture.

2 is a view for explaining the shape of the micro heater according to an embodiment of the present invention.

Referring to FIG. 2, the micro heater (a) manufactured by the present invention and the micro heater (b) manufactured by the conventional method are enlarged and shown at the same magnification. If you look from a distance, there is a slight difference in contrast, but when you zoom in, you can see the difference. That is, (a) shows a micro heater manufactured using laser filamentation sintering, which has a line width of 1 μm with a size small enough to be unrecognizable to eyes. On the other hand, in (b), it was not possible to manufacture a pattern having a line width of 5 μm or less by using conventional inkjet printing, reverse gravure offset, and laser sintering. In a device located close to the eye such as glasses or a helmet, the micro heater manufactured by the conventional method is an obstacle because it is recognized by the eye.

3 is a view for explaining the performance of the micro heater according to an embodiment of the present invention.

Referring to FIG. 3, the micro heater manufactured by the present invention locally heats a high temperature on a substrate by applying an electric power, and when the substrate is filled with moisture in a humid environment as shown in (a), the micro heater is formed in a region where the micro heater is formed. Moisture is removed by applying an electric current, and when observed with a thermal imaging camera, it can be seen that the temperature has risen to about 80 degrees instantaneously.

It can be seen that there is always high visibility in a humid environment such as (b). That is, the lens on the left is transparent due to moisture control, while the lens on the right is opaque due to moisture.

4 is a view showing a method for manufacturing a fine pattern according to an embodiment of the present invention, Figures 5 to 8 are views for explaining a fine pattern manufacturing process according to an embodiment of the present invention.

Referring to Figure 4, a method for manufacturing a high resolution large area fine pattern according to an embodiment of the present invention is an ink coating step (S100), seed generation step (S200), pattern forming step (S300), ink removal step It may include (S400).

1) In the ink coating step (S100), as shown in Figure 5 can be formed by coating a metal organic ion ink on the substrate 10 to form a coating layer. In this case, the substrate may be any one of an organic thin film such as SiO ₂ , TiO ₂ , ZnO, glass, silicon wafer, and polyimide, polycarbonate, polyurethane, polyethylene lephthalate, polyethylene naphthalate, and the like.

Further, the metal organic ion ink may include an organic solvent in which metal ions are dissolved or mixed. The viscosity of these metal organic ions may be 1 to 100 cp. Here, the metal ions are gold (Au), silver (Ag), copper (Cu), aluminum (Al), nickel (Ni), cobalt (Co), iron (Fe), chromium (Cr), palladium (Pd) , Platinum (Pt), titanium (Ti), zinc (Zn) may be any one. The organic solvent may be any one of isopropanol, butanol, acetone, ethanol, and toluene.

Conventional metal nanoparticle dispersions used in the process of forming a fine pattern has a problem that is not excellent in manufacturing cost and wettability due to encapsulation due to oxidation. Therefore, in order to improve this problem, the present invention intends to use a metal organic ion ink in which a metal is dissolved in an organic solvent.

At this time, the coating method of the metal organic ion ink is Langmuir-blogett, spin coating, roll coating, spray coating, blade coating, slot die ( Any one of various coating methods used in the art, such as slot die coating, dip coating, and inkjet coating, may be used.

2) In the seed generation step (S200), a plurality of metal nano seeds may be generated in the coating layer by heat-treating the substrate on which the coating layer is formed, as shown in FIGS. 6A to 6B. At this time, a method of heat-treating the substrate on which the coating layer is formed may be provided with a heating unit at a lower portion of the substrate on which the coating layer is formed as shown in FIG. 3A, or a lamp such as an infrared ray (IR) lamp on the upper portion of the substrate on which the coating layer is formed as shown in FIG. 3B. Equipped with a heating method can be used.

In addition, the substrate 10 on which the coating layer is formed may be disposed in a heat treatment chamber such as a heating oven or a microwave oven to provide heat. In addition, various methods of heating the substrate on which the coating layer is formed may be used.

In this heat treatment method, if heat is supplied unevenly to only a part of the coating layer, a problem of uneven distribution of metal nanoseeds may occur in the coating layer, so that uniform heat is supplied to the coating layer as a whole. When the heat is supplied to the coating layer, the metal ions and the organic material bonded to each other in the coating layer are disconnected and reduced to precipitate as fine metal particles in a solid state, thereby producing metal nano seeds.

As shown in FIG. 6C, as a result of using an organic silver solution as the metal organic ion ink, it can be seen that silver nanoseeds are generated in the organic silver solution by heat treatment.

As shown in FIG. 6D, when the silver nanoseeds are generated in the organic silver solution by the proposed method, the distance between the silver nanoseeds is longer than the distance between the silver nanoseeds produced by the conventional method, thereby shortening the heat diffusion distance. Thermal conductivity may be relatively low by the difference in distance. Such thermal conductivity may be, for example, within 1 ~ 100W / mK in the growth sintering process of the present invention. That is, the thermal conductivity is less than 1W / mK in the state of the metal organic ion ink before heat treatment, the thermal conductivity is within 1 ~ 100W / mK during the growth sintering process by heat treatment, and then higher than 100W / mK after the growth sintering process.

As shown in FIG. 6E, when a laser is irradiated in a solution state of a low thermal conductivity, a general metal nanoparticle dispersion liquid only evaporates organic solvent instantaneously, leaving only nanoparticles in a solid state having high thermal conductivity, so that the sintered area is wider than the laser irradiation area. The resolution of the pattern is reduced.

On the other hand, in this process, the thermal conductivity of the metal organic ion ink is 1W / mK or less, similar to the metal nanoparticle dispersion, and the laser irradiation causes nucleation (nanosides), cluster formation, and growth, causing the organic matter to evaporate suddenly. The thermal conductivity does not increase, but gradually increases and sintering is suppressed so that a phenomenon in which the sintering region is wider than the laser irradiation region is suppressed, thereby improving the resolution of the metal pattern.

3) In the pattern forming step (S300), as shown in FIG. 7A, a Bessel beam is irradiated to a predetermined patterning region of the coating layer to grow and sinter the metal nanoseed in the patterning region to form a metal pattern.

For example, as shown in FIG. 7B, after the heat treatment is performed on a metal organic ion ink coated on a substrate to form silver nanoseeds, the silver nanoseeds are irradiated with a Bessel beam, thereby growing the silver nanoseeds heated by the Bessel beam. At the same time, growth sintering is caused by sintering each other.

9 is a view showing a pattern forming step according to an embodiment of the present invention.

Referring to FIG. 9, the forming of the metal pattern according to an embodiment of the present invention (S300) may include a region setting step (S310), a laser irradiation step (S320), a bonding and sintering step (S330). .

3-1) In the region setting step (S310), a region to be irradiated with the Bessel beam, that is, a patterning region may be set in the coating layer. In addition, the focus of the vessel beam may be adjusted by moving the laser to the set patterning area. For example, the laser may be moved while the substrate is fixed, or the substrate may be moved while the laser is fixed. At this time, since the substrate is placed on the moving means, the substrate can be moved by moving the moving means. In addition to moving a laser or a substrate by using a moving means and irradiating a laser to a patterning area, a method of moving and irradiating a Bessel beam using a galvano scanner and a combination of the two methods are used. Methods can be used.

After moving the laser to the patterning area, the focus of the Bessel beam is adjusted, for example, by using a focusing optical element that focuses a beam such as an objective lens or an F-theta lens. This can be adjusted. Passing the Bessel beam through a focusing optical element results in a laser filament phenomenon, which results in a longer focal length and smaller focal length of the Gaussian beam. In the laser filament phenomenon, self-focusing and plasma defocusing occur continuously to form a focal region having a long aspect ratio. By sintering the nanomaterial using this laser filament phenomenon, an electrode close to the light wavelength can be formed and the length of the line width can be freely changed. In addition, process temperature, laser beam scan rate, laser beam output, pulse width, repetition rate, and the like, which may affect the area or thickness of the fine pattern to be formed, may be adjusted.

3-2) In the laser irradiation step (S320), the laser beam generated from the laser can be converted into a vessel beam, and the converted vessel beam can be irradiated to a predetermined patterning area of the coating layer. Such lasers may include, for example, pulse lasers from fs (femtoseconds) to ms (milliseconds), continuous wave (CW) lasers, and quasicontinuous-wave (QCW) lasers.

In this case, in the present invention, a case in which the laser beam is irradiated to the patterning region through the substrate is described as an example, but the present invention is not limited thereto, and the laser beam may be irradiated to the patterning region without passing through the substrate. That is, the laser beam may be irradiated from the lower part of the substrate or the laser beam may be irradiated from the upper part of the substrate with respect to the substrate.

10 is a view for explaining the principle of the Bessel beam generation according to an embodiment of the present invention.

Referring to FIG. 10, a laser beam having a Gaussian cross-sectional profile may be converted into a Bessel beam using an Axicon lens. Herein, the case of using an excicon lens has been described as an example. However, the present invention is not limited thereto, and an annular ring and an annular slit may be used, as well as the exicon lens.

In detail, the Gaussian shape, which is a basic beam profile of a laser, consumes a lot of energy and is difficult to focus a beam close to an optical wavelength, thus making it difficult to form a fine pattern close to an optical wavelength. However, the Bessel beam focuses on a narrow area, reducing energy consumption and increasing concentration, thereby reducing the focal size of the beam, and thus forming a pattern of optical wavelengths. It has a depth of focus to enable fine pattern formation on non-planar substrates.

The size of the beam is changed by converting it into a Bessel beam with an exicon lens and passing it through a beam expander. The beam size can be freely changed by adjusting the beam expander. If the size of the vessel beam is freely changed, the focal region may be changed according to the control of the enlarger, thereby overcoming the limited depth of focus, and thus, a substrate having a large height difference or three-dimensional patterning may be possible.

In addition, in the present invention, a case in which a laser beam is irradiated to one patterning region is described as an example, but the present invention is not limited thereto, and a plurality of patterning regions may be irradiated with a laser beam. For example, multiple focusing devices such as array lenses can be used to irradiate a laser beam by multiplexing multiple patterning regions.

3-3) In the bonding and sintering step (S330), as the metal or seed in the patterning region heated by the laser beam grows, its size increases and may be sintered while being bonded to each other.

11A to 11B are diagrams illustrating a micro pattern manufacturable using a vessel beam.

Referring to FIG. 11A, when the vessel beam is used, a fine pattern may be formed on a lens or hemispherical substrate or a rough surface substrate through an objective lens, a 2D scanner, or a 3D scanner. That is, the pattern can be formed on the non-planar substrate.

Referring to FIG. 11B, when using the vessel beam, a fine pattern may be formed on the edge of the substrate. That is, the pattern can be formed at the edge of the substrate.

4) In the ink removing step (S400), as shown in FIG. 8, the metal organic ion ink and the metal nanoseed in the region not irradiated with the laser beam may be removed so that only the metal pattern is present on the substrate. As the removal method, a method using ultrasonic waves or a spray may be used, or a method using a cleaning solution such as ethanol or acetone may be used.

12 is a view showing a fine pattern formed on a substrate in accordance with an embodiment of the present invention.

Referring to FIG. 12, a fine pattern is formed on the substrate by irradiating a vessel beam to bond and sinter the metal nano seeds in the patterning region.

13 is a view showing a method for manufacturing a fine pattern according to another embodiment of the present invention.

Referring to FIG. 13, a method for manufacturing a fine pattern according to an embodiment of the present invention may include a solution applying step (S1100), a pattern forming step (S1200), and an ink removing step (S1300). Here, instead of the metal organic ion ink described with reference to FIG. 4, a metal nanoparticle dispersion is used.

1) In the solution coating step (S1100), it is possible to form a coating layer by coating a metal nanoparticle dispersion on a substrate. Here, the metal nanoparticle dispersion may be prepared in a state in which the metal nanoparticles are dispersed in an organic solvent or water.

Thus, in the case of using the metal nanoparticle dispersion, the process of heating the coating layer to generate the metal nano seeds as in the manufacturing method of FIG. 4 is not required, and the coating layer is dried at room temperature for a predetermined time and then proceeds.

That is, since the pattern forming step S1200 and the ink removing step S1300 are the same as those described in the manufacturing method of FIG. 4, they will not be described below.

Features, structures, effects, etc. described in the above embodiments are included in one embodiment of the present invention, and are not necessarily limited to one embodiment. Furthermore, the features, structures, effects, and the like illustrated in the embodiments may be combined or modified with respect to other embodiments by those skilled in the art to which the embodiments belong. Therefore, it should be interpreted that the contents related to such a combination and modification are included in the scope of the present invention.

In addition, the above description has been made with reference to the embodiment, which is merely an example, and is not intended to limit the present invention. Those skilled in the art to which the present invention pertains will be illustrated as above without departing from the essential characteristics of the present embodiment. It will be appreciated that various modifications and applications are possible. For example, each component specifically shown in the embodiment can be modified. And differences relating to such modifications and applications will have to be construed as being included in the scope of the invention defined in the appended claims.

10: Substrate
20: coating layer
30: metal nanoseed
40: laser
50: metal pattern
100: support frame
200: imaging optical unit
300: micro heater
400: control unit

Claims (14)

Support frame;
An imaging optical unit coupled to the support frame to provide image information and formed of a transparent material;
A micro heater formed on at least one surface of the imaging optical unit; And
And a controller connected to the micro heater to apply a predetermined current to the micro heater to remove moisture generated on the surface of the image optical unit.
The micro heater is a fine pattern of a metal that is indistinguishable from the eye formed in a predetermined shape using a laser and a metal organic ion ink, and when a predetermined current is applied from the controller, the temperature rises to remove the moisture. Smart glasses. The method of claim 1,
The micro heater,
An ink applying step of forming a coating layer by applying a metal organic ion ink on the transparent material;
Heating the substrate on which the coating layer is formed to generate a plurality of metal nano seeds in the coating layer, wherein the seed layer has a predetermined thermal conductivity; And
And a Bessel beam is irradiated to a predetermined patterning area of the coating layer having the predetermined thermal conductivity to sequentially manufacture a pattern of forming a fine pattern by growing and sintering a metal nano seed in the patterning area. The method of claim 2,
In the pattern forming step, the laser beam generated from the laser is converted into the vessel beam, and the converted vessel beam is irradiated to the predetermined patterning area of the coating layer by passing through the focusing optical element. The method of claim 2,
In the pattern shape step, the fine pattern of the metal below the laser wavelength, which cannot be discerned by the eye, which is sintered while the metal or even seed in the patterning region heated by the vessel beam grows in size and is bonded to each other as the seed grows. Formed, smart glasses. The method of claim 2,
And a seed removing step of removing the metal organic ion ink and the metal nado seed in an area not irradiated with the laser beam. The method of claim 1,
The control unit,
An operation unit which receives a touch or push operation from a user; And
And a processor that controls to apply a current to the micro heater according to a user's manipulation received from the manipulation unit. The method of claim 1,
The control unit,
A sensor unit measuring a temperature change amount or humidity around the image optical unit; And
And a processor that controls to apply a current to the micro heater when the temperature change amount or the humidity measured from the sensor unit is equal to or greater than a predetermined threshold value. The method of claim 1,
The control unit,
A sensor unit measuring an amount of change in capacitance of the surface of the image optical unit; And
And a processor controlling to apply current to the micro heater when the amount of change in capacitance measured from the sensor unit is equal to or greater than a preset threshold. The method of claim 1,
The predetermined shape includes a mesh shape, a square shape, a circle shape, and a spiral shape. Support frame;
A lens coupled to the support frame and having a different thickness according to the frequency;
A micro heater formed on at least one surface of the lens; And
And a controller connected to the micro heater to apply a predetermined current to the micro heater to remove moisture generated on the surface of the lens.
The micro heater is a fine pattern of a metal that is indistinguishable from the eye formed in a predetermined shape by using a laser and a metal organic ion ink, and when a predetermined current is applied from the controller, the temperature rises to remove the moisture. glasses. A support frame mounted to the rear of the vehicle;
A lens provided in the support frame for photographing a subject;
A micro heater formed on at least one surface of the lens; And
And a controller connected to the micro heater to apply a predetermined current to the micro heater to remove moisture generated on the surface of the lens.
The micro heater is a fine pattern of a metal that is indistinguishable from the eye formed in a predetermined shape by using a laser and a metal organic ion ink, and when a predetermined current is applied from the controller, the temperature rises to remove the moisture. Car parking assistant camera. A support frame formed to be in close contact with the face of the user;
Safety glasses coupled to the front of the support frame;
A micro heater formed on at least one surface of the protective glasses; And
And a controller connected to the micro heater to apply a predetermined current to the micro heater to remove moisture generated on the surface of the protective glasses.
The micro heater is a fine pattern of a metal that is indistinguishable from the eye formed in a predetermined shape by using a laser and a metal organic ion ink, and when a predetermined current is applied from the controller, the temperature rises to remove the moisture. Experimental goggles. Support frame;
A lens coupled to the support frame for protecting the eye from predetermined light;
A micro heater formed on at least one surface of the lens; And
And a controller connected to the micro heater to apply a predetermined current to the micro heater to remove moisture generated on the surface of the lens.
The micro heater is a fine pattern of a metal that is indistinguishable from the eye formed in a predetermined shape by using a laser and a metal organic ion ink, and when a predetermined current is applied from the controller, the temperature rises to remove the moisture. Sport goggles. A support frame surrounding the entire head of the driver;
Safety glasses coupled to the front of the support frame, and rotated up and down;
A micro heater formed on at least one surface of the eye shield; And
And a controller connected to the micro heater to apply a predetermined current to the micro heater to remove moisture generated on the surface of the safety glasses.
The micro heater is a fine pattern of a metal that is indistinguishable from the eye formed in a predetermined shape by using a laser and a metal organic ion ink, and when a predetermined current is applied from the controller, the temperature rises to remove the moisture. Motorcycle protective helmet.

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