KR102561234B1 - Radiation Energy Controller for Ultraviolet Light Emitting Diode - Google Patents

Abstract

The present invention relates to a device that can be used in various fields by controlling the radiant energy of a UV LED UV LED. It has a substrate 11 having a mounting surface 113 and a rear surface 114, and a light source 10 having a UV LED 12 mounted on the mounting surface 113 of the substrate 11; An incident surface 31 disposed at a predetermined distance from the mounting surface 113 of the substrate 11 and facing the emission surface of the UV LED 12, and an emission surface facing the incident surface 31 ( 32) having a lens 30; and a support member 20 supporting the substrate 11 and the lens 30 and receiving conduction heat from the substrate 11 and discharging it to the outside of the device. The lens 30 may refract and concentrate radiant energy including ultraviolet rays emitted from the UV LED 12 at the incident surface 31 and the exit surface 32 .

Description

UV LED radiation energy controller {Radiation Energy Controller for Ultraviolet Light Emitting Diode}

The present invention relates to UV LEDs (Ultraviolet Light Emitting Diodes), and more particularly, to devices that can be utilized in various fields by controlling radiant energy of UV LEDs.

Techniques for energy control of concentrating light energy are widely known. A device to which a representative light energy control technology is applied is a laser processing device. A laser processing device is a technology for processing a surface by concentrating and irradiating light energy at one point and transmitting strong energy to the surface to which the laser is irradiated.

A laser generating device is installed in the laser processing device. As the wavelength of the laser emitted from the laser generating device, a green laser of 532 nm or an ultraviolet (UV) of 355 nm is used. The short wavelength of ultraviolet (UV) of 355 nm has high energy, and surface processing is possible by concentrating the energy by condensing it.

In such a conventional laser generating device, 1064 nm light generated in the process of repeating excitation and reduction by receiving energy from the outside of an active atom of a laser rod of a Nd: YAG solid medium is oscillated in an optical cavity ( It uses the principle of flow release). The basic wavelength of 1064nm laser is diode-pumped through an optical system into a green laser of 2nd harmonic wave of 532nm or an ultraviolet laser of 355nm of third harmonic wave.

However, the wavelength of the ultraviolet rays generated by the above method is fixed at 355 nm. In addition, such an ultraviolet laser generating device has a very complicated structure, it is difficult to configure a compact device, and the manufacturing cost is high. In addition, when using the principle of the ultraviolet laser generating device as described above, as a result of emitting all thermal energy through an extremely cooling device and concentrating only light energy, energy efficiency is low.

WO 94/09713 JP 2006-315031A

The present invention has been made to solve the above problems, and an object of the present invention is to provide a device for controlling radiant energy of a UV LED that has a simple structure, can be manufactured compactly, and has a low manufacturing cost.

An object of the present invention is to provide a device for controlling radiant energy of a UV LED capable of adjusting the wavelength of ultraviolet rays.

An object of the present invention is to provide a device for controlling radiant energy of a UV LED having high energy efficiency and a control method using the same.

In order to solve the above problems, the present invention is a device for controlling the radiant energy of a UV LED, a substrate 11 having a mounting surface 113 and a back surface 114, and a mounting surface of the substrate 11 ( 113) a light source 10 having a UV LED 12 mounted thereon; A plane-shaped incident surface 31 that is spaced apart from the mounting surface 113 of the substrate 11 by a predetermined distance and faces the emission surface of the UV LED 12, and a surface opposite to the incident surface 31. A lens 30 made of PMMA or quartz having a convex exit surface 32; and a support member 20 that supports the substrate 11 and the lens 30 and receives the heat of the substrate 11 and dissipates it to the outside of the device. Provided is a device for controlling radiant energy of a UV LED that refracts and condenses ultraviolet rays emitted from a UV LED 12 at the incident surface 31 and the emitting surface 32.

The device for controlling the radiant energy of the UV LED is installed on the support member 20 so as to face the target 80 of the radiant energy, and the sensor module 60 measures the illuminance and temperature of the surface of the target 80. ); and a controller 51 controlling the light source 10 based on the illuminance and temperature measured by the sensor module 60. In this way, the light source and the controller can be integrated.

The substrate 11 may have a flat plate shape.

The UV LED 12 may be mounted on the substrate 11 in a chip form and/or package form. The UV LED 12 may have an array shape. The array may be in the form of a straight line. The UV LEDs 12 may be arranged on a flat plate. The UV LED 12 may be a chip in board module or a package module. The UV LED 12 may be a chip-on-board package module.

The incident surface 31 of the lens 30 may have a flat shape, and the exit surface 32 of the lens 30 may have a convex shape.

The lens 30 may be quartz or PMMA having a monomer ratio of 85% or more.

The UV LEDs 12 are arranged in a linear array form, and the lens 30 has a predetermined width and length including a semi-cylindrical shape in which the incident surface 31 is flat and the exit surface 32 is convex. UV light can be condensed and controlled in the form of a line segment having

The UV LED 12 is in the form of a chip, and the lens 30 has a dot shape having a predetermined area, including a hemispherical shape in which the incident surface 31 is flat and the emission surface 32 is convex. It is possible to control the concentration of light.

The light source includes a plurality of UV LEDs 12, and the plurality of UV LEDs 12 are arranged in the form of a plurality of straight line arrays parallel to each other, and the plurality of straight line arrays may constitute two or more channels.

The controller 51 may control the UV LED 12 for each channel to adjust the width or area to which the ultraviolet rays are irradiated.

The peak wavelength of the UV LED 12 may be within a range of 360 nm or more and 460 nm or less. Peak wavelengths of the plurality of UV LEDs 12 may be different from each other.

Peak wavelengths of the plurality of UV LEDs 12 may be different from each other. Accordingly, ultraviolet rays having different peak wavelengths may be irradiated to the irradiated object.

Peak wavelengths of the plurality of UV LEDs 12 may be different for each channel.

The control unit 51 may control the UV LED 12 for each channel to control the peak wavelength of ultraviolet rays irradiated to the target object.

The supporting member 20 includes a light source supporting member 21 supporting the substrate 11 and a lens supporting member 22 supporting the lens 30, and the light source supporting member 21 Supports at least one of the mounting surface 113 of the substrate 11 and the edge surface 115 of the substrate 11, and the lens support member 22 is complementary to the edge shape of the lens 30. It may be provided with a gripping shape 223 of the shape.

At least a portion of the inner surface 201 of the support member 20 may be treated with a scattering or non-reflection surface.

The scattering or non-reflective surface treatment may be performed by sand blasting or anodizing.

According to the present invention, since a device capable of condensing ultraviolet rays using a UV LED is provided, the structure can be manufactured compactly and with a low manufacturing cost, and the ultraviolet rays can be collected and used in various fields.

According to the present invention, since a device capable of condensing ultraviolet light using a UV LED is provided, the wavelength of ultraviolet light to be condensed and utilized can be selected.

According to the present invention, since it is possible to control the concentration of radiant energy including both light energy and thermal energy generated from UV LEDs, energy use efficiency is very high.

In addition to the effects described above, specific effects of the present invention will be described together while explaining specific details for carrying out the present invention.

1 is a side view showing a first embodiment of a device for controlling radiant energy of a UV LED according to the present invention.
2 is a perspective view showing a second embodiment of a device for controlling radiant energy of a UV LED.
Figure 3 is a side view of the control device of Figure 2;
4 is a perspective view of a light source of the control device of FIG. 2;
5 shows the temperature distribution of the surface of the irradiated object when the surface of the irradiated object is irradiated with a device for controlling radiant energy of a UV LED to which no lens is applied.
6 shows the temperature distribution of the surface of the irradiated object when the surface of the irradiated object is irradiated with a UV LED radiant energy control device in which a lens is applied but the inner surface of the support member is not surface-treated.
7 shows the temperature distribution of the surface of the irradiated object when the surface of the irradiated object is irradiated with a UV LED radiant energy control device in which a lens is applied and the inner surface of the support member is treated with a non-reflection (scattering) surface.
8 is a partial view showing a third embodiment of an apparatus for controlling radiant energy of a UV LED according to the present invention.
9 is an enlarged view of the dotted line portion of FIG. 8 .
10 is a XX cross-sectional view of FIG. 8 .
11 is a partial view showing a state in which the distance between the light source support member and the lens support member of the device for controlling radiant energy of the UV LED of FIG. 8 is adjusted farther.
FIG. 12 is an enlarged view of the dotted line portion of FIG. 11 .
Fig. 13 is a cross-sectional view XIII-XIII of Fig. 11;
FIG. 14 is a side view of the UV LED radiant energy control device of FIG. 8 .
15 is a perspective view of the apparatus for controlling radiant energy of the UV LED of FIG. 8 .
FIG. 16 is a partial perspective view of the UV LED radiant energy control device of FIG. 15 .

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

The present invention is not limited to the embodiments disclosed below, and various changes may be applied and may be implemented in various different forms. Only this embodiment is provided to complete the disclosure of the present invention and to fully inform those skilled in the art of the scope of the invention. Therefore, the present invention is not limited to the embodiments disclosed below, but all changes and equivalents included in the technical spirit and scope of the present invention as well as substitution or addition of the configuration of one embodiment and the configuration of another embodiment each other to substitutes.

The accompanying drawings are only for easy understanding of the embodiments disclosed in this specification, and the technical idea disclosed in this specification is not limited by the accompanying drawings, and all changes and equivalents included in the spirit and technical scope of the present invention are included. It should be understood to include water or substitutes. In the drawings, components may be exaggeratedly large or small in size or thickness in consideration of convenience of understanding, etc., but due to this, the scope of protection of the present invention should not be construed as being limited.

Terms used in this specification are only used to describe specific implementations or examples, and are not intended to limit the present invention. And expressions in the singular include plural expressions unless the context clearly dictates otherwise. In the specification, terms such as "comprise" and "consist of" are intended to designate that features, numbers, steps, operations, components, parts, or combinations thereof described in the specification exist. That is, in the specification, terms such as ~ include, ~ consist of, etc. It should be understood that it does not preclude the possibility of the presence or addition of one or more other features, numbers, steps, operations, components, parts, or combinations thereof.

Terms including ordinal numbers, such as first and second, may be used to describe various components, but the components are not limited by the terms. These terms are only used for the purpose of distinguishing one component from another.

It is understood that when an element is referred to as being "connected" or "connected" to another element, it may be directly connected or connected to the other element, but other elements may exist in the middle. It should be. On the other hand, when an element is referred to as “directly connected” or “directly connected” to another element, it should be understood that no other element exists in the middle.

When an element is referred to as being “on top” or “under” another element, it should be understood that other elements may exist in the middle as well as being directly above the other element. .

Unless defined otherwise, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which the present invention belongs. Terms such as those defined in commonly used dictionaries should be interpreted as having a meaning consistent with the meaning in the context of the related art, and unless explicitly defined in the present application, they should not be interpreted in an ideal or excessively formal meaning. don't

[First Embodiment]

Referring to FIG. 1, a first embodiment of an apparatus for controlling radiant energy of a UV LED according to the present invention will be described. An apparatus for controlling radiant energy of a UV LED (1) includes a light source (10), a lens (30) spaced apart from the light source (10), and a support member (20) supporting the light source (10) and the lens (30). do. The light source 10 may be a substrate 11 on which a UV LED 12 is mounted. The substrate 11 may have a flat plate shape, and may be a metal substrate or a PCB.

A UV LED 12 is mounted on the mounting surface 113 of the substrate 11 . The UV LED 12 may be disposed in the central portion of the substrate 11 . The UV LED 12 may be in the form of a chip. The back surface 114 of the substrate 11 is installed in close contact with the light source support member 21 of the support member 20 so that heat generated from the UV LED 12 can be conducted to the light source support member 21 . That is, the light source support member 21 may perform a function of dissipating heat from the substrate 11 to the outside. The light source support member 21 may be cooled through a heat sink or a motor fan. Accordingly, the cooling of the UV LED 12 can be facilitated to increase the luminous efficiency of the UV LED 12 .

The light source support member 21 supporting the light source 10 is in close contact with the back surface 114 of the substrate 11 and surrounds the lateral circumference of the light source 10 . Accordingly, the light source supporting member 21 can prevent foreign matter from being introduced into the front of the UV LED 12 .

The lens 30 faces the mounting surface 113 of the light source 10 and is installed at a predetermined distance from the UV LED 12 . The lens 30 may be supported by the lens support member 22 of the support member 20 . The lens support member 22 includes a gripping portion 223 corresponding to the shape of the edge of the lens 30 . The lens support member 22 may be connected to the light source support member 21 . The lens support member 22 may be integrally manufactured with the light source support member 21 or may be slidably fixed with respect to the light source support member 21 . As the lens support member 22 slides relative to the light source support member 21, the distance between the lens 30 and the UV LED 12 can be adjusted.

The incident surface 31 of the lens 30 faces the UV LED 12 . The incident surface 31 may have a planar shape. Accordingly, it is possible to reduce the rate at which ultraviolet light incident on the lens 30, which is a high-density medium, is reflected. Since ultraviolet light having a short wavelength has a high reflectance, it is preferable that the incident surface 31 of the lens 30 is configured as a flat surface.

The exit surface 32 of the lens 30 forms a convex surface in the exit direction. Accordingly, the lens 30 condenses and emits the incident ultraviolet light from the incident surface 31 again.

The lens 30 may have a hemispherical shape.

The lens 30 is a medium capable of transmitting ultraviolet rays. The material of the lens may be quartz, which is not degraded by high-energy ultraviolet rays, PMMA (poly methyl methacrylate) having a monomer ratio of 85% or more, or Teflon-based fluorine-based synthetic resin.

In front of the exit surface 32 of the lens 30, an irradiated object 80 on which ultraviolet rays should be concentrated is placed. The irradiated object 80 may be a condition in which a specific portion of the surface 81 should be heated. The irradiated object 80 may be a workpiece to be cut using ultraviolet energy.

When power is supplied to the UV LED 12, ultraviolet rays are generated from the UV LED 12. Since the luminous efficiency of UV is low, energy that is not converted into light energy among electrical energy supplied to the UV LED 12 is converted into thermal energy. As such, some of the thermal energy generated by the UV LED 12 is conducted through the substrate 11 and the support member 20 and is emitted to the outside. Accordingly, the temperature of the UV LED 12 does not rise high enough not to affect the luminous efficiency.

Ultraviolet rays generated from the UV LED 12 are irradiated to the front of the UV LED 12 . In addition, some of the thermal energy generated by the UV LED 12 is also radiated to the front of the UV LED 12 . Among the radiant energy forwardly irradiated from the UV LED 12, ultraviolet energy is about 20% and the ratio of thermal energy is about 80%.

The UV LED 12 does not radially irradiate light like a conventional ultraviolet lamp, but intensively irradiates ultraviolet light toward one side of the light emitting surface. Although the light emitted from the UV LED 12 is diffused in a range of 180 degrees in front of the UV LED 12, there is a central axis on which the light is concentrated. This central axis may be an axis perpendicular to the light emitting surface of the UV LED 12, and thus, by aligning the center of the convex shape of the emitting surface 32 of the lens 30 with this, the radiant energy of the UV LED 12 can be concentrated on the surface of the irradiated object.

Ultraviolet light itself has high energy. In addition, some of the thermal energy generated by the UV LED 12 is diffused to the front of the UV LED 12 in the form of radiation. Therefore, when the radiant energy of the UV LED 12 is concentrated on the surface 81 of the irradiated object 80 through the lens 30, the surface of the irradiated object can be heated very effectively. That is, the lens 30 refracts radiant energy in the form of electromagnetic waves, including ultraviolet rays, which is irradiated forward from the UV LED 12, and concentrates the energy on a specific point on the surface 81 of the target object 80. can make it

According to the first embodiment, the radiant energy of the UV LED 12 in the form of a chip may be focused on one point by the lens 30 . When the optical power (W) of the light source 10 is further increased by further supplying power to the UV LED 12, the illuminance (mW/cm ² ) of the ultraviolet rays reaching the surface of the irradiated object is also further increased.

Therefore, without applying the structure of the conventional laser generating device, only the configuration of the UV LED 12, the lens 30, and the support member 20 supporting them is used to concentrate the radiant energy of the UV LED 12 to target the irradiated object. It is possible to focus a fairly large amount of energy on an irradiated object to the extent that it can induce melting or severing of a specific point on the target.

[Second Embodiment]

A second embodiment of an apparatus for controlling radiant energy of a UV LED according to the present invention will be described with reference to FIGS. 2 to 4 . In describing the second embodiment, differences from the first embodiment will be mainly described.

The substrate 11 constituting the light source 10 may have a long rectangular flat plate shape. The UV LED 12 mounted on the central portion of the mounting surface 113 of the substrate 11 may have an array form in which a plurality of UV LED chips are arranged in one direction along the longitudinal direction of the substrate 11 .

The edge surface 115 of the substrate 11 is supported by the light source support member 21 of the support member 20, and the back surface 114 of the substrate 11 may be exposed backward. A heat sink may be attached to the back surface 114 of the substrate or may be exposed to fluid flow generated by a cooling fan or the like. The substrate 11 may be cooled through a heat sink or a motor fan. Accordingly, the cooling of the UV LED 12 can be facilitated to increase the luminous efficiency of the UV LED 12 .

The light source supporting member 21 supporting the light source 10 is in close contact with the edge surface 115 of the substrate 11 and surrounds the lateral circumference of the light source 10 . Accordingly, the light source supporting member 21 can prevent foreign matter from being introduced into the front of the UV LED 12 and thermal energy in the internal space of the supporting member from escaping to the outside.

The lens 30 faces the mounting surface 113 of the light source 10 and is installed at a predetermined distance from the UV LED 12 . The lens 30 may be supported by the lens support member 22 of the support member 20 . The lens support member 22 includes a gripping portion 223 corresponding to the shape of the edge of the lens 30 . The lens support member 22 may be connected to the light source support member 21 .

The inner surface 201 of the support member 20 may be subjected to a scattering or non-reflection surface treatment. Such scattering or non-reflection surface treatment may be performed by increasing surface roughness by sand blasting or coating the surface of the inner surface 201 of the support member 20 through anodizing.

The incident surface 31 of the lens 30 faces the UV LED 12 . The incident surface 31 may have a planar shape. The exit surface 32 of the lens 30 forms a convex surface in the exit direction. Accordingly, the lens 30 condenses and emits the incident ultraviolet light from the incident surface 31 again. The lens 30 may have a semi-cylindrical shape.

In front of the emission surface 32 of the lens 30, an irradiated object 80 on which ultraviolet rays should be concentrated may be placed.

According to the second embodiment, by the shape of the light source 10 and the lens 30, the radiant energy concentrated on the irradiated object 80 may be distributed in a linear area.

5 shows the temperature distribution of the surface 81 when the radiant energy of the light source 10 is irradiated to the target object 80 with the lens 30 removed in the second embodiment. The light source 10 can be understood as being arranged in a vertical direction from the center in the drawing (see dotted line). According to this, it can be understood that the radiant energy of the light source 10 is evenly diffused and reaches the surface of the irradiated object, so that the temperature distribution is spread throughout.

6 shows the temperature distribution of the surface 81 when radiant energy is irradiated to the target object 80 in a state in which the inner surface of the support member is not subjected to non-reflection (scattering) treatment in the second embodiment. When reflection occurs on the inner surface 201 of the supporting member 20, as shown in FIG. 6, second light concentrating parts appear on both sides of the light condensing area. When the second light condensing part is generated, the leaked light reflected from the inner surface of the supporting member is condensed on a part other than the heating target area to cause heating, which causes the temperature of the undesirable area to rise. Therefore, when the second light condensing unit appears, difficulties may arise in a control process of concentrating radiant energy of the UV LED 12 on the surface of an irradiated object in order to achieve a desired purpose. That is, it becomes difficult to control the heating range. For example, the appearance of the second light concentrating unit makes it difficult to control light in a situation in which a temperature rise is required only in a specific area.

7 shows a result of applying the device for controlling radiant energy of a UV LED according to the second embodiment. When the inner surface 201 of the support member 20 is subjected to anti-reflection treatment (reflection of 20% or less), the leakage of light is reduced and the second light collecting portion hardly appears. Therefore, it is much easier to control the temperature rise of a specific part (heating target area).

5 to 7 show the results obtained under the same conditions except for the case where there is no lens 30 (FIG. 5) and the case where the inner surface 201 of the support member 20 is not treated with an anti-reflective surface (FIG. 6). In the case of FIG. 5, the peak light amount was 1,051 mW/cm ² in the area where the radiant energy was irradiated, and in the case of FIG. 6, the peak light amount was 8,535 mW/cm ² in the area where the radiant energy was irradiated. In the case of FIG. 7, the radiant energy The peak light intensity in the irradiated area was 8,428 mW/cm ² .

That is, according to the second embodiment, the radiant energy emitted from the three-column UV LED array is condensed in a linear shape. will do it together Specifically, the lens 30 refracts radiant energy in the form of electromagnetic waves, including ultraviolet rays, which is irradiated forward from the UV LED 12 and concentrates the energy at a specific point on the surface 81 of the target object 80. can focus It was confirmed that the energy reaching the target increased by about 8 times or more due to the condensing lens.

On the other hand, conventional laser generators have no choice but to generate lasers fixed to ultraviolet rays of 355 nm, which is the third harmonic of 1064 nm, which is the basic wavelength of Nd:YAG. can be adjusted Therefore, when the radiant energy control device according to the embodiment is applied, it is possible to apply ultraviolet light having a wavelength suitable for the characteristics of an object to be irradiated.

UV LED Wavelength(nm) Optical Power(W) temperature change 365 820 Reach 65℃ within 5 seconds 435 930 Reach 80℃ within 5 seconds 455 840 Reach 65℃ within 5 seconds

Table 1 shows the experimental results of applying UV LEDs of different peak wavelengths in the second embodiment. As described above, according to the embodiment, it can be confirmed that the output of the light source is different according to the peak wavelength, and there is a difference in the temperature change of the surface of the irradiated object accordingly. As a result of the experiment, it can be confirmed that the efficiency is the highest when a UV LED having a peak wavelength of 435 nm is applied. Since the radiant energy of the UV LED consists of about 20% of light energy and about 80% of heat energy, it will be understood that light with a short wavelength has the highest efficiency around 435 nm despite its high energy level. When using a UV LED emitting ultraviolet rays having a peak wavelength of about 360 nm or more and less than 460 nm, the energy concentration efficiency of the radiant energy control device according to the present invention can be most improved. [Third Embodiment] Hereinafter FIGS. 8 to 16 A third embodiment of an apparatus for controlling radiant energy of a UV LED according to the present invention will be described with reference to . In describing the third embodiment, differences from the first and second embodiments will be mainly described.

The substrate 11 constituting the light source 10 may have a long rectangular flat plate shape. The UV LED 12 mounted on the central portion of the mounting surface 113 of the substrate 11 may be in the form of an array in which a plurality of UV LEDs 12 are arranged long in one direction along the longitudinal direction of the substrate 11. there is. The UV LED 12 may be a chip on board module and/or a package module.

The back surface of the substrate 11 is supported by a light source support member 21 . The body 50 may be fixed to the back surface of the support member 21 . The main body 50 is provided with a control circuit 51 for controlling the light source 10 . The control circuit 51 may control the light source 10 and the sensor module 60 to be described later. According to the embodiment, the control circuit 51 is built into the main body 50. However, it goes without saying that the control circuit 51 may be embedded in another place, for example, the light source support member 21 .

A heat sink may be attached to the body 50 or the light source support member 21 .

The lens 30 is installed at a position separated from the UV LED 12 by a predetermined distance. The lens 30 may be supported by the lens support member 22 of the support member 20 . The lens support member 22 includes a gripping portion 223 corresponding to the shape of the edge of the lens 30 .

The lens support member 22 may be slidably connected to the light source support member 21 . The inner circumferential surface of the lens support member 22 is in contact with the outer circumferential surface of the light source supporting member 21, and they contact each other to guide mutual sliding movement.

One of the lens support member 22 and the light source support member 21 is provided with a long hole 222 extending in a sliding direction, and the other side is provided with a protrusion 213 fitted into the long hole 222. It can be. In the embodiment, a structure in which a long hole is provided in the lens support member 22 is illustrated. A maximum sliding distance (stroke) between the lens support member 22 and the light source support member 21 may be regulated by the length of the long hole 222 . A stroke of the protrusion 213 in the long hole 222 may be y.

As shown in FIG. 8 , the distance between the UV LED 12 and the lens 30 may be x as shown in FIG. . And, as shown in FIG. 9, at the position where the lens support member 22 is farthest from the light source support member 21, the distance between the UV LED 12 and the lens 30 is as shown in FIG. 13 (x + y).

The distance between the UV LED 12 and the lens 30 may be adjusted from x to (x + y) or less. The degree of the interval can be confirmed by first scales 41 and second scales 42 provided on the light source support member 21 and the lens support member 22, respectively. In the embodiment, a plurality of scales are displayed on the first scale 41, and the second scale 42 is a scale facing any one of the plurality of scales of the first scale 41.

The protrusion 213 may be a bolt screwed into the light source support member 21 . When the distance between the lens support member 22 and the light source support member 21 is adjusted in a state in which the bolt is loosened, the bolt moves along the long hole 222 . When the bolt is tightened in a state where the distance between the lens support member 22 and the light source support member 21 is adjusted, the bolt compresses the circumference of the long hole 222 so that the long hole 222 and the bolt cannot move relatively anymore and are fixed. do.

The incident surface 31 of the lens 30 faces the UV LED 12 . The incident surface 31 may have a planar shape. The exit surface 32 of the lens 30 forms a convex surface in the exit direction. Accordingly, the lens 30 condenses and emits the incident ultraviolet light from the incident surface 31 again. The lens 30 may have a semi-cylindrical shape.

The distance between the lens 30 and the UV LED 12 may be changed according to the arrangement of the UV LED 12 and/or the UV irradiation area (width) of the object to be applied by the user.

The diameter of the semicircle of the lens 30, that is, the size of the lens 30 may be determined according to the arrangement of the UV LEDs 12 and the area (width) of the UV irradiation target to be applied by the user.

Referring to FIG. 14 , an irradiated object 80 on which ultraviolet rays should be concentrated may be placed in front of the emission surface 32 of the lens 30 . According to the third embodiment, by the shape of the light source 10 and the lens 30, the radiant energy concentrated on the irradiated object 80 may be distributed in a linear area.

The light source 10 may be controlled by a control circuit 51 . The control circuit 51 may control the light source 10 based on the illuminance of ultraviolet rays irradiated to the target object 80 and the temperature of the surface 81 of the target object 80 . The illuminance of the ultraviolet rays and the temperature of the surface may be sensed by the sensor module 60 and provided to the control circuit 51 .

The sensor module 60 includes a temperature sensor 62, an illuminance sensor 61, and a bracket 61 supporting them. The temperature sensor 62 and the illuminance sensor 61 may be fixed to a substrate, and the substrate may be fixed to the bracket 61 . The temperature sensor 62 may be an infrared (IR) sensor.

As shown in FIGS. 14 and 15 , the sensor module 60 may be manufactured as a separate part from the support member 20 and coupled to the support member 20 . That is, the sensor module 60 may include a bracket 61 made of a separate part from the support member 20 .

Alternatively, the sensor module 60 may be provided in a form embedded in the support member 20 as shown in FIG. 16 . That is, the support member 20 may form a bracket of the sensor module 60 .

The sensor module 60 may be installed on the lens support member 22 .

By omitting the window member in front of the sensors 62 and 63 of the sensor module 60, it is possible to increase the detection accuracy of the sensor.

The sensor module 60, the support member 20, and the control circuit 51 may form a single device.

Similar to the second embodiment, the light source 10 of the third embodiment may have a linear array of UV LEDs 12 in three rows. Each column can form a channel. That is, the light source 10 of the third embodiment may have three channels.

The plurality of UV LEDs 12 constituting the light source 10 may include a plurality of types of UV LEDs having different peak wavelengths between 360 nm and 460 nm. That is, according to the third embodiment, the light source 30 may simultaneously emit light in a plurality of wavelength bands. The wavelength range may be differently arranged for each channel. A plurality of UV LEDs 12 provided in one channel may emit light with the same wavelength band or with different wavelength bands.

The control circuit 51 may control on-off and intensity (output) of the plurality of UV LEDs 12 . All of the plurality of UV LEDs 12 may be individually controlled or controlled for each channel. For example, in order to adjust the area (width) of UV irradiation of the UV LED 12, the UV LED 12 may be turned on/off and/or the intensity may be varied for each channel. For example, in order to adjust the ultraviolet wavelength band of the UV LED 12, the UV LED 12 may be turned on/off and/or the intensity may be varied for each channel.

According to the above-described invention, since a device capable of condensing ultraviolet rays and radiant heat energy using the UV LED 12 is provided, the structure can be manufactured compactly and simply, and the device with a low manufacturing cost can be used in various fields. can In addition, since UV LEDs are used unlike conventional laser devices, it is possible to select the wavelength of ultraviolet rays to be used by condensing and utilizing them in various fields.

In addition, according to the present invention, since it is possible to control the concentration of radiant energy including both light energy and thermal energy generated by the UV LED, the efficiency of energy use is very high, unlike conventional laser devices that use only light energy.

As described above, the present invention has been described with reference to the drawings illustrated, but the present invention is not limited by the embodiments and drawings disclosed herein, and various modifications are made by those skilled in the art within the scope of the technical idea of the present invention. It is obvious that variations can be made. In addition, although the operation and effect according to the configuration of the present invention have not been explicitly described and described while describing the embodiments of the present invention above, it is natural that the effects predictable by the corresponding configuration should also be recognized.

1: UV LED radiant energy control device
10: light source
11: Substrate
113: mounting surface
114: back side
115: border surface
12: UV LEDs (array, chip)
20: support member (metal)
201: inner surface (scattering, non-reflection surface treatment)
21: light source support member (heat dissipation)
213: projection
22: lens support member
222: long hole
223: gripping portion
30: lens (half cylinder, hemisphere)
31: entrance plane (plane)
32: exit surface (convex surface)
41: 1st scale
42: second scale
50: body
51: control circuit
60: sensor module
61: bracket
62: temperature sensor
63: light sensor
80: irradiated object
81: surface

Claims (9)

As a device for controlling the radiant energy of a UV LED,
A substrate 11 having a mounting surface 113 and a back surface 114, and a light source 10 having a UV LED 12 mounted on the mounting surface 113 of the substrate 11;
An incident surface 31 disposed at a predetermined distance from the mounting surface 113 of the substrate 11 and facing the emission surface of the UV LED 12, and an emission surface facing the incident surface 31 ( 32) having a lens 30; and
Includes; support member 20 for supporting the substrate 11 and the lens 30,
The lens 30 refracts radiant energy in the form of electromagnetic waves, including ultraviolet rays, which is irradiated forward from the UV LED 12 at the incident surface 31 and the exit surface 32, so that the irradiated object 80 A device for controlling radiant energy of a UV LED, characterized in that melting or cutting the specific point by concentrating the energy on a specific point on the surface 81 of the.
The method of claim 1,
The UV LEDs 12 are arranged in a linear array form,
The lens 30 includes a semi-cylindrical shape in which the incident surface 31 is flat and the exit surface 32 is convex,
An apparatus for controlling radiant energy of a UV LED, characterized in that for condensing and controlling ultraviolet rays in the form of a line segment having a predetermined width and length.
The method of claim 1,
The UV LED 12 is in the form of a chip or package,
The lens 30 includes a hemispherical shape in which the incident surface 31 is flat and the exit surface 32 is convex,
An apparatus for controlling radiant energy of a UV LED, characterized in that for condensing and controlling ultraviolet rays in the form of dots having a predetermined area.
The method of claim 1,
The radiant energy control device of the UV LED, characterized in that the peak wavelength of the UV LED (12) is within the range of 360 nm or more and 460 nm or less.
The method of claim 4,
The UV LED 12 is provided in plurality, and at least some of the UV LEDs among the plurality of UV LEDs 12 have different peak wavelengths.
The method of claim 1,
The support member 20 includes a light source support member 21 supporting the substrate 11 and a lens support member 22 supporting the lens 30,
The light source support member 21 supports at least one of the mounting surface 113 of the substrate 11 or the edge surface 115 of the substrate 11,
The lens support member 22 is a device for controlling radiant energy of a UV LED, characterized in that it has a gripping shape 223 having a shape complementary to the edge shape of the lens 30.
The method of claim 1,
At least a portion of the inner surface 201 of the support member 20 has a scattering or non-reflection surface treatment, characterized in that UV LED radiant energy control device.
The method of claim 1,
a sensor module 60 installed on the support member 20 so as to face the irradiated object 80 of the radiant energy and measuring the illuminance and temperature of the surface of the irradiated object 80; and
The control unit 51 for controlling the light source 10 based on the illuminance and temperature measured by the sensor module 60; UV LED radiant energy control device characterized in that it further comprises.
The method of claim 8,
The light source includes a plurality of UV LEDs 12,
The plurality of UV LEDs 12 are arranged in a plurality of linear arrays parallel to each other,
The plurality of straight line arrays constitute two or more channels,
The control unit 51 controls the UV LED 12 for each channel.