CN212522480U - Ultraviolet disinfection device and terminal based on optical waveguide - Google Patents
Ultraviolet disinfection device and terminal based on optical waveguide Download PDFInfo
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- CN212522480U CN212522480U CN202020943178.0U CN202020943178U CN212522480U CN 212522480 U CN212522480 U CN 212522480U CN 202020943178 U CN202020943178 U CN 202020943178U CN 212522480 U CN212522480 U CN 212522480U
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Abstract
The utility model provides an ultraviolet disinfection device and terminal based on optical waveguide, include: the device comprises an ultraviolet light source, an optical coupler and an optical waveguide light guide film; the optical waveguide light guide film comprises a substrate layer and a flat light guide film layer from bottom to top; the refractive index of the substrate layer is smaller than that of the flat light guide film layer; the ultraviolet light source is used for providing ultraviolet light for disinfection; the optical coupler is used for receiving the ultraviolet light and coupling the ultraviolet light into the optical waveguide light guide film; the optical waveguide light directing film is transparent to ultraviolet light and is configured to receive the ultraviolet light to disinfect a surface of the optical waveguide light directing film. This application receives the leading-in ultraviolet ray of optical coupler through optical waveguide leaded light film, and the ultraviolet ray takes place the total reflection in optical waveguide leaded light film, can not take place the decay along with the distance, and the ultraviolet ray only takes place the light leakage in dirty attached position, and is less to the human injury, and the device is simple, can integrate and carry out ultraviolet disinfection, convenient to use to display device on the display device when needs.
Description
Technical Field
The utility model belongs to the technical field of ultraviolet degassing unit, what especially relate to is an ultraviolet disinfection device and terminal based on optical waveguide.
Background
Humans are chronically afflicted with a variety of diseases, many of which are infections by bacteria or viruses through manual contact. The diligent washing of hands and the correct washing of hands are critical to reducing the spread of disease, but if viruses can be killed from the source, i.e., the surfaces of a large number of objects that we routinely touch with hands, we can live safer. The objects such as various buttons, handles, keyboards, mobile phone screens and the like which can not be bypassed in daily life are often the main sources of various bacteria and viruses, particularly the mobile phone screens, and researches show that the bacteria quantity of the mobile phone screens is more than that of randomly collected ATM keyboards, closestool flushing buttons and elevator buttons! The mobile phone, as the most frequently used portable device in our lives, may be a "source of poison", which is how terrorist is! People have no ever-seen, few habits of cleaning and disinfecting mobile phones regularly are provided, even if the mobile phones are cleaned, the mobile phones are only simply wiped, and the effect of killing bacteria and viruses is not large.
Uv disinfection has been widely used as an economically efficient and well-established technique, but it also has some significant disadvantages: first, the intensity of ultraviolet rays is greatly attenuated according to the square of the distance, and the intensity of ultraviolet rays has to be increased and the sterilization time has to be increased in order to achieve the sterilization effect. Second, ultraviolet radiation is harmful to the human body, and the human body may be damaged by the ultraviolet radiation for a long time, or even may cause cancer. Third, the existing germicidal lamps can only be used outside of the electronic device and cannot be integrated with electronic devices, especially flat panel displays, touch screens, and various key switches.
Therefore, the prior art is subject to further improvement.
SUMMERY OF THE UTILITY MODEL
In view of the above disadvantages in the prior art, the present invention is directed to provide an ultraviolet disinfection apparatus and a terminal based on optical waveguide, which overcome the disadvantages of the existing ultraviolet disinfection apparatus, such as severe ultraviolet attenuation, increased ultraviolet intensity and increased disinfection time; the human body can be carcinogenic after being subjected to ultraviolet radiation for a long time; the existing disinfection device can not be integrated on the display equipment, and has the defects of inconvenient use and the like.
The utility model discloses an embodiment is an ultraviolet degassing unit based on optical waveguide, wherein, include: the device comprises an ultraviolet light source, an optical coupler and an optical waveguide light guide film; the optical waveguide light guide film comprises a substrate layer and a flat light guide film layer from bottom to top; the refractive index of the substrate layer is smaller than that of the flat light guide film layer;
the ultraviolet light source is used for providing ultraviolet light for disinfection;
the optical coupler is used for receiving the ultraviolet light and coupling and guiding the ultraviolet light into the optical waveguide light guide film;
the optical waveguide light directing film is transparent to the ultraviolet light and is configured to receive the ultraviolet light to disinfect a surface of the optical waveguide light directing film.
The ultraviolet disinfection device based on the optical waveguide is characterized in that the ultraviolet light source is an ultraviolet LED lamp bead; the wavelength of the ultraviolet light source is less than 380 nm.
The ultraviolet disinfection device based on the optical waveguide is characterized in that the optical coupler is one of a grating coupler, a prism coupler, a lens coupler and coupling glue with matched refractive index.
The ultraviolet disinfection device based on the optical waveguide is characterized in that the flat light guide film layer is made of a transparent polymer optical waveguide film material; the substrate layer is made of a transparent material with a refractive index smaller than that of the flat light film layer; and the basal layer is coated on the surface of the flat light guide film layer.
The ultraviolet disinfection device based on the optical waveguide is characterized in that the substrate layer is made of a material which is high in ultraviolet light and is transparent to visible light.
The ultraviolet disinfection device based on the optical waveguide is characterized by further comprising a current driving circuit connected with the ultraviolet light source; and the power supply and the control circuit are connected with the current driving circuit.
The ultraviolet disinfection device based on the optical waveguide is characterized in that an ultraviolet reflection film layer is arranged on the peripheral side surface of the flat light guide film layer; the ultraviolet reflecting film layer is used for reflecting the ultraviolet light.
Another embodiment disclosed in the present invention is a terminal, wherein the terminal comprises the ultraviolet disinfection device based on optical waveguide and a display; the ultraviolet disinfection device is arranged on the display.
The terminal, wherein the display comprises a touch screen; and an optical waveguide light guide film in the ultraviolet disinfection device is attached to the touch screen.
Another embodiment disclosed in the present invention provides a terminal, wherein the terminal comprises the ultraviolet disinfection device based on optical waveguide and a key or a switch; and an optical waveguide light guide film in the ultraviolet disinfection device is attached to the key or the switch.
The utility model has the advantages that the utility model provides an ultraviolet disinfection device and terminal based on optical waveguide, receive the ultraviolet light that optical coupler led in through the light guide film of optical waveguide, when the surface of dull and stereotyped light guide film layer is clean, the ultraviolet light takes place the total reflection in the light guide film of optical waveguide; when dirt exists on the surface of the flat light guide film layer, light leakage occurs at the dirt position by ultraviolet light in the light guide film layer, and therefore the dirt position is disinfected. The ultraviolet light is totally reflected in the optical waveguide light guide film and cannot be attenuated along with the distance, and the ultraviolet light is only leaked at the dirt attachment position, so that accurate disinfection is realized. The light guide effectively controls the leakage of UV light, and has small harm to human body. The utility model discloses, simple structure, the form of making the film that can be convenient can integrate and carry out ultraviolet disinfection, convenient to use to display device on the display device when needs.
Drawings
Fig. 1 is a schematic structural diagram of an ultraviolet disinfection device based on optical waveguide provided in an embodiment of the present invention;
FIG. 2 is a schematic structural view of a longitudinal section of a planar optical waveguide;
FIG. 3 is a diagram showing the propagation path of ultraviolet light in the optical waveguide light guiding film in the state where the surface of the flat light guiding film layer is clean;
FIG. 4 is a diagram showing the propagation path of ultraviolet light in the optical waveguide light guiding film in the state of dirt on the surface of the flat light guiding film layer;
fig. 5 is a diagram of the propagation path of ultraviolet light in the optical waveguide based ultraviolet disinfection apparatus provided by the present invention when the optical coupler is a grating coupler;
fig. 6 is a diagram of the propagation path of ultraviolet light in the light guide based ultraviolet disinfection apparatus provided by the present invention when the optical coupler is a prism coupler;
FIG. 7 is a diagram of the path of UV light propagating through the optical waveguide-based UV disinfection apparatus of the present invention when the optical coupler is a lens coupler;
fig. 8 is a schematic structural diagram of a control circuit and a current driving circuit in an ultraviolet disinfection apparatus based on an optical waveguide according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer and clearer, the present invention will be described in further detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Because the ultraviolet intensity of the ultraviolet disinfection device in the prior art is seriously attenuated along with the square of the distance, the ultraviolet intensity needs to be increased in order to achieve the disinfection effect, when a human body uses the existing ultraviolet disinfection device, the received ultraviolet radiation is easy to cause cancer, and in addition, the existing ultraviolet disinfection device can not be integrated into a display device, so that the use is inconvenient. In order to solve the above problems, the present invention provides an ultraviolet disinfection device based on optical waveguide, as shown in fig. 1. The utility model discloses a device includes: an ultraviolet light source 101, a light coupler 102, and a light guiding film 103. The optical waveguide light guide film 103 comprises a base layer 1031 and a flat plate light guide film layer 1032 from bottom to top; the base layer 1031 has a refractive index less than the refractive index of the flat light directing film layer 1032. The ultraviolet light source 101 is used for providing ultraviolet light for disinfection; the optical coupler 102 is configured to receive the ultraviolet light and couple and guide the ultraviolet light into the optical waveguide light guiding film 103; the optical waveguide light guiding film 103 is transparent to the ultraviolet light and is configured to receive the ultraviolet light to sterilize the surface of the optical waveguide light guiding film 103.
As is well known, an optical waveguide is a light guide channel that transmits light waves while being confined in a specific medium or near the surface thereof, and includes a planar optical waveguide and a cylindrical optical waveguide. The simplest planar lightwave circuit consists of three layers of material, the middle layer being of refractive index n1The flat light guide film layer is covered on the surface of the substrate with the refractive index n2On the substrate layer, the flat light guide film layer has a refractive index n3The cover layer of (1). To construct an optical waveguide, n is required1Must be greater than n2And n3I.e. n1>n2，n1>n3So that the light can be confined to propagate through the film. As shown in FIG. 2, in an ideal homogeneous medium, the planar light waveguide has a refractive index difference only in the X direction, and the light can propagate in the planar light waveguide as if the light is totally reflected at two interfaces of "slab light guiding thin film layer-substrate layer" and "slab light guiding thin film layer-cover layer", so that the light is reflected at the two interfacesPropagating along a zigzag path in the planar optical waveguide.
In specific implementation, in this embodiment, the cover layer is set to be an air layer, since the refractive index of air is 1, the refractive index of any other medium is greater than 1, and the refractive index of the base layer 1031 is smaller than the refractive index of the flat light guiding film layer 1032, after the ultraviolet light emitted by the ultraviolet light source 101 is coupled and guided into the optical waveguide light guiding film 103 through the optical coupler 102, the propagation path of the ultraviolet light in the optical waveguide light guiding film 103 is as shown in fig. 3 in a clean state of the surface of the flat light guiding film layer 1032, and the ultraviolet light guided into the optical waveguide light guiding film 103 is totally reflected on two interfaces, namely, the base layer-flat light guiding film layer and the flat light guiding. Under the condition that dirt 104 is attached to the surface of the flat light guide film layer 1032, the propagation path of ultraviolet light in the light guide film 103 is as shown in fig. 4, for example, the dirt 104 is liquid drops (such as water drops, oil stains and the like) with viruses, the air layer is replaced by another medium with a larger refractive index at the position of the dirt 104, and according to a critical angle calculation formula, the critical angle can be increased, so that the original condition meeting total reflection is changed, and part of light can be transmitted from the dirt 104, that is, light leakage occurs. The utility model discloses utilize this kind of light to reveal, let the ultraviolet ray in dull and stereotyped light guide film layer 1032 reveal out from foul 104 position, also be to the disinfection of foul 104 position. The ultraviolet light takes place the total reflection in optical waveguide leaded light film 103, can not take place the decay along with the distance, and the ultraviolet light only takes place the light leakage in dirty 104 attached position, and is less to the human injury, and the device is simple, can integrate and carry out ultraviolet disinfection, convenient to use to display device on the display device when needs.
Further, ultraviolet light source 101 is a plurality of ultraviolet LED lamp pearls, and ultraviolet LED lamp pearl is compared in the ultraviolet bulb among the current ultraviolet degassing unit, has lower consumption and higher efficiency, and this kind of lower consumption can maintain longer operating time under the condition of equal electric quantity to practice thrift the electric energy. The operating state of the ultraviolet light source 101 may be set to be normally on, turned on at regular time, or turned on by setting a switch to control the ultraviolet light source 101 to be turned on. The wavelength of the ultraviolet light source 101 is less than 380nm, and in a specific embodiment, when the wavelength of the ultraviolet light source is 220-280 nm, the radiation power and the radiation time can reach a better disinfection effect within a preset range.
During specific implementation, in order to incite somebody to action the utility model discloses ultraviolet degassing unit based on optical waveguide is integrated to take the electronic equipment of touch-sensitive screen and does not influence electronic equipment's normal use, for example the cell-phone, and optical waveguide leaded light film 103 is transparent film in this embodiment. In a specific embodiment, the flat light guide film layer 1032 is made of a transparent polymer light guide film material, the base layer 1031 is made of a transparent material with a refractive index smaller than that of the flat light film layer 1032, such as silicon dioxide and magnesium fluoride, the base layer 1031 is transparent to visible light and ultraviolet light, and the base layer 1031 is coated on the surface of the flat light guide film layer 1032.
In practical applications, the substrate layer 1031 may also be made of a material that is highly transparent to ultraviolet light and is instead transparent to visible light, such as an optical dielectric film and a metal film, which may not form a perfect optical waveguide but may function to strongly reflect ultraviolet light.
In specific implementation, in order to prevent the ultraviolet light coupled into the optical waveguide light guiding film 103 from leaking out from the peripheral edge of the optical waveguide light guiding film 103, in this embodiment, an ultraviolet reflecting film layer is disposed on the peripheral side surface of the flat light guiding film layer 1032 and is used for reflecting the ultraviolet light leaking out from the peripheral edge of the optical waveguide light guiding film 103 back into the flat light guiding film layer 1032.
Example one
The first embodiment of the present invention provides an ultraviolet disinfection apparatus based on optical waveguide, as shown in fig. 5, the ultraviolet disinfection apparatus based on optical waveguide includes a first ultraviolet light source, a first optical coupler 502 and a first optical waveguide light guide film 503, the first optical waveguide light guide film 503 includes a first substrate layer 5031 and a first flat light guide film layer 5032. The structure of the uv disinfection apparatus in this embodiment is the same as that of the uv disinfection apparatus mentioned in the previous step, and the only difference is that the first optical coupler 502 in this embodiment is a grating coupler, and the first optical coupler 502 is a periodic grating structure disposed on the first flat light guiding film layer 5032. After the incident light enters the first optical waveguide light guiding film 503 through the first optical coupler 502, guided wave light is formed in the Z direction of the first flat light guiding film layer 5032, and another part of the ultraviolet light is transmitted from the first flat light guiding film layer 5032 to the first substrate layer 5031 and is lost. The grating coupler has the advantages of no limit of the refractive index of the material of the first optical waveguide light guiding film 503, stable coupling efficiency and no need of strict control of the incident position of the light beam.
Example two
The embodiment of the present invention provides one kind in the second embodiment the ultraviolet disinfection device based on optical waveguide, as shown in fig. 6, the ultraviolet disinfection device based on optical waveguide includes second ultraviolet source, second optical coupler 602 and second optical waveguide light guiding film 603, second optical waveguide light guiding film 603 includes second stratum basale 6031 and second flat plate light guiding film layer 6032. The structure of the uv disinfection apparatus in this embodiment is the same as that of the uv disinfection apparatus mentioned in the previous step, and the only difference is that the second optical coupler 602 in this embodiment is a prism coupler, when the incident angle of the uv light incident on the bottom of the second optical coupler 602 is greater than the critical angle of total reflection, an evanescent field is generated in the gap between the second optical coupler 602 and the second optical waveguide light guiding film 603, and the evanescent field can penetrate into the second light guiding film layer 6032 to excite the guided mode in the second light guiding film layer 6032 to form a uv light input, and at this time, the input uv light in the second optical coupler 602 transfers the uv light energy to the guided mode in the second optical waveguide light guiding film 603 through the coupling effect between the radiation mode and the guided mode, so that the prism coupler can guide the uv light into the second optical waveguide light guiding film 603. In order to improve the coupling efficiency of the prism coupler, the right edge of the incident beam, i.e. the ultraviolet light, must be precisely coincident with the right-angled tip of the second optical coupler 602, and if the edge of the beam is outside, i.e. right of, the right-angled tip of the second optical coupler 602, a part of the incident energy will be directly reflected or directly transmitted into the second optical waveguide light guiding film 603; if the beam edge is to the left of the right-angled tip of the optical coupler 602, a portion of the energy coupled into the optical waveguide light directing film 603 may be coupled back into the optical coupler 602 again. The advantage of using a prism coupler is that the coupling efficiency is high and the prism position can be adjusted as required to achieve maximum coupling strength.
EXAMPLE III
The embodiment of the utility model provides a in the third, ultraviolet degassing unit based on optical waveguide, as shown in fig. 7, ultraviolet degassing unit based on optical waveguide includes third ultraviolet source, third optical coupler 702 and third optical waveguide leaded light film 703, third optical waveguide leaded light film 703 includes third stratum basale 7031 and third flat board leaded light thin layer 7032. The structure of the ultraviolet disinfection apparatus in this embodiment is the same as that of the ultraviolet disinfection apparatus mentioned in the previous step, and the only difference is that the third optical coupler 702 in this embodiment is a lens coupler, ultraviolet light provided by an ultraviolet light source is directly focused on the end face of the third flat light guide film layer 7032 by using the third optical coupler 702, and ultraviolet light beams within the waveguide numerical aperture are transmitted in the third flat light guide film layer 7032, so as to form a guided mode.
In a specific embodiment, the optical coupler may further be coupling glue with a matched refractive index, the ultraviolet light source and the optical waveguide light guiding film are directly connected through the coupling glue with a matched refractive index in a specific use process, and the ultraviolet light is guided into the optical waveguide light guiding film from the ultraviolet light source through the coupling glue with a matched refractive index.
In specific implementation, as shown in fig. 8, the ultraviolet disinfection apparatus based on optical waveguide further includes a current driving circuit connected to the ultraviolet light source for driving the ultraviolet light source to emit ultraviolet light, a power supply connected to the current driving circuit for supplying power to the ultraviolet light source, and a control circuit connected to the current driving circuit for controlling the ultraviolet light source. The power supply can be an external independent power supply, such as a battery and the like, and can also directly utilize an internal power supply of the electronic equipment; the control circuit may be provided separately or may be integrated into the control circuit of the electronic device when the electronic device is produced. The current driving circuit and the control circuit of the ultraviolet light source are a current driving circuit and a control circuit for driving and controlling the light source in the prior art, and are not described herein again.
When the concrete implementation, the utility model discloses ultraviolet degassing unit based on optical waveguide can be applied to numerous scenes, for example will the utility model discloses ultraviolet source and optical coupler among the ultraviolet degassing unit based on optical waveguide are integrated to the cell-phone on, paste the mode that light guide film is similar to the cell-phone pad pasting with optical waveguide on the cell-phone screen, realize cell-phone self-sterilizer. For another example, the light guide film is made into a mobile phone cover, which is sleeved on the mobile phone to sterilize the mobile phone. For another example, the ultraviolet light source and the optical coupler are integrated on other various electronic devices, and the optical waveguide light guide film is attached to the surfaces of the keys and the switches, so that the electronic devices are disinfected.
In one embodiment, please continue to refer to fig. 1, the present invention provides a terminal, which includes the above-mentioned ultraviolet disinfection device based on optical waveguide and a display 105, wherein the ultraviolet disinfection device is disposed on the display 105. The display 105 comprises a touch screen and a main control box, the ultraviolet light source 101 and the optical coupler 102 are arranged in the main control box, and the optical waveguide light guide film 103 extends to the touch screen from the main control box and is attached to the surface of the touch screen. In a specific use process, ultraviolet light is provided by the ultraviolet light source 101 and is coupled and guided into the optical waveguide light guide film 103 through the optical coupler 102, and when the surface of the flat light guide film layer 1032 is clean, the ultraviolet light is totally reflected in the flat light guide film layer 1032; when a user clicks the screen, dirt on the hand can be left on the surface of the flat light guide film layer 1032, the position of the dirt is equivalent to the replacement of an air layer by another medium with a larger refractive index, so that the original condition of meeting the total reflection can be changed, part of light can be transmitted from the dirt, and the position of the dirt on the touch screen is disinfected. The touch-sensitive screen is by various application scenes such as wide application in cell-phone, computer, ATM terminal, because the continuous touch of staff becomes a center of spreading the virus, the utility model discloses an ultraviolet disinfection device can very effectual be applied to these terminals and realize effectual disinfection. The ultraviolet light takes place the total reflection in optical waveguide leaded light film 103, can not take place the decay along with the distance, and the ultraviolet light only takes place the light in dirty attached position and reveals, and is less to the human injury, and the device is simple, can integrate and carry out ultraviolet disinfection, convenient to use to display device on the display device when needs.
In specific implementation, the main control box is installed on the surface of the display 105 opposite to the touch screen in a magnetic attraction, buckling or gluing mode, the main control box further comprises a current driving circuit connected with the ultraviolet light source 101, and a power supply and a control circuit connected with the current driving circuit, and ultraviolet light provided by the ultraviolet light source 101 is coupled and guided into the optical waveguide light guide film 103 through the optical coupler 102, so that the surface of the touch screen is automatically sterilized.
In specific implementation, the main control box is arranged inside the display, the main control box comprises a current driving circuit connected with the ultraviolet light source 101, and a power supply and a control circuit connected with the current driving circuit, wherein the power supply can be matched with the ultraviolet light source or share the power supply with the terminal; the current driving circuit and the control circuit can be arranged independently, and can also be integrated into the circuit of the terminal. At this time, the optical waveguide light guiding film 103 extends from a main control box inside the display 105 to the touch screen, and the ultraviolet light provided by the ultraviolet light source 101 is coupled and guided into the optical waveguide light guiding film 103 through the optical coupler 102, so that the surface of the terminal is automatically sterilized.
In another embodiment, the present invention provides a terminal, wherein the terminal comprises the above ultraviolet disinfection device based on optical waveguide and a key or a switch, and an optical waveguide light guide film in the ultraviolet disinfection device is attached to the key or the switch. Similarly to the previous embodiment, the uv light source and the optical coupler in the uv disinfection apparatus are integrated with the terminal. The utility model discloses an ultraviolet disinfection device can be very effectual be applied to these terminals and disinfect to button or switch on the terminal, and the ultraviolet ray takes place the total reflection in optical waveguide light guiding film, can not take place the decay along with the distance, and the ultraviolet ray only takes place the light and reveals at foul adhesion position, and is less to the human injury, and the device is simple, convenient to use.
To sum up, the utility model provides an ultraviolet degassing unit and terminal based on optical waveguide, include: the device comprises an ultraviolet light source, an optical coupler and an optical waveguide light guide film; the optical waveguide light guide film comprises a substrate layer and a flat light guide film layer from bottom to top; the refractive index of the substrate layer is smaller than that of the flat light guide film layer; the ultraviolet light source is used for providing ultraviolet light for disinfection; the optical coupler is used for receiving the ultraviolet light and coupling and guiding the ultraviolet light into the optical waveguide light guide film; the optical waveguide light directing film is transparent to the ultraviolet light and is configured to receive the ultraviolet light to disinfect a surface of the optical waveguide light directing film. The light guide film receives ultraviolet light guided by the light coupler, and when the surface of the flat light guide film layer is clean, the ultraviolet light is totally reflected in the light guide film; when dirt exists on the surface of the flat light guide film layer, light leakage occurs at the dirt position by ultraviolet light in the light guide film layer, and therefore the dirt position is disinfected. The ultraviolet light takes place the total reflection in optical waveguide leaded light film, can not take place the decay along with the distance, and the ultraviolet light only takes place the light at dirty attached position and reveals, and is less to the human injury, and the device is simple, can integrate and carry out ultraviolet disinfection, convenient to use to display device on the display device when needs.
It should be understood that the application of the system of the present invention is not limited to the above examples, and that modifications and variations can be made by those skilled in the art in light of the above teachings, and all such modifications and variations are intended to fall within the scope of the appended claims.
Claims (10)
1. An ultraviolet disinfection apparatus based on optical waveguides, comprising: the device comprises an ultraviolet light source, an optical coupler and an optical waveguide light guide film; the optical waveguide light guide film comprises a substrate layer and a flat light guide film layer from bottom to top; the refractive index of the substrate layer is smaller than that of the flat light guide film layer;
the ultraviolet light source is used for providing ultraviolet light for disinfection;
the optical coupler is used for receiving the ultraviolet light and coupling and guiding the ultraviolet light into the optical waveguide light guide film;
the optical waveguide light directing film is transparent to the ultraviolet light and is configured to receive the ultraviolet light to disinfect a surface of the optical waveguide light directing film.
2. The ultraviolet light waveguide-based disinfection apparatus of claim 1 in which the ultraviolet light source is an ultraviolet LED lamp bead; the wavelength of the ultraviolet light source is less than 380 nm.
3. The ultraviolet light guide-based disinfection apparatus of claim 2, wherein the optical coupler is one of a grating coupler, a prism coupler, a lens coupler, and an index-matching coupling glue.
4. The optical waveguide-based uv disinfection apparatus of claim 1, wherein the flat light directing film layer is a transparent polymer optical waveguide film material; the substrate layer is made of a transparent material with a refractive index smaller than that of the flat light guide film layer; and the basal layer is coated on the surface of the flat light guide film layer.
5. The optical waveguide-based uv disinfection apparatus of claim 1, wherein the substrate layer is a material that is highly transparent to uv light and yet is transparent to visible light.
6. The optical waveguide-based ultraviolet disinfection apparatus of claim 4 further comprising a current drive circuit connected to the ultraviolet light source; and the power supply and the control circuit are connected with the current driving circuit.
7. The ultraviolet light guide based disinfection apparatus of claim 1, wherein the flat light guide film layer is provided with an ultraviolet reflecting film layer on peripheral sides thereof; the ultraviolet reflecting film layer is used for reflecting the ultraviolet light.
8. A terminal comprising the ultraviolet light guide-based disinfection apparatus of any one of claims 1 to 7 and a display; the ultraviolet disinfection device is arranged on the display.
9. The terminal of claim 8, wherein the display comprises a touch screen; and an optical waveguide light guide film in the ultraviolet disinfection device is attached to the touch screen.
10. A terminal, characterized in that it comprises an ultraviolet disinfection device based on optical waveguide according to any claim 1 to 7 and a key or a switch; and an optical waveguide light guide film in the ultraviolet disinfection device is attached to the key or the switch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020943178.0U CN212522480U (en) | 2020-05-28 | 2020-05-28 | Ultraviolet disinfection device and terminal based on optical waveguide |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202020943178.0U CN212522480U (en) | 2020-05-28 | 2020-05-28 | Ultraviolet disinfection device and terminal based on optical waveguide |
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| CN111450281A (en) * | 2020-05-28 | 2020-07-28 | 深圳光子晶体科技有限公司 | Ultraviolet disinfection device and terminal based on optical waveguide |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CB03 | Change of inventor or designer information | ||
| CB03 | Change of inventor or designer information |
Inventor after: Wang Yongjing Inventor before: Wang Haocheng Inventor before: Zheng Gang Inventor before: Zhang Xiyu Inventor before: Wang Yongjing Inventor before: Yang Quanping Inventor before: Wang Jufang Inventor before: Liu Guocheng |
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| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20210406 Address after: 215000 No.18 kechuanglu, Huqiu District, Suzhou City, Jiangsu Province Patentee after: Wang Yongjing Address before: 518000 Chuangke area C-03, 14 / F, building 1, No.1 Industrial Park Road, Tongsheng community, Dalang street, Longhua District, Shenzhen City, Guangdong Province Patentee before: Shenzhen Photonic Crystal Technology Co.,Ltd. |