CN112202037A - Cavity type ultraviolet laser virus killing device - Google Patents
Cavity type ultraviolet laser virus killing device Download PDFInfo
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- CN112202037A CN112202037A CN202011089802.6A CN202011089802A CN112202037A CN 112202037 A CN112202037 A CN 112202037A CN 202011089802 A CN202011089802 A CN 202011089802A CN 112202037 A CN112202037 A CN 112202037A
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- 241000700605 Viruses Species 0.000 title claims abstract description 23
- 230000002147 killing effect Effects 0.000 title claims abstract description 18
- 230000005540 biological transmission Effects 0.000 claims abstract description 12
- 230000003287 optical effect Effects 0.000 claims description 17
- 230000003253 viricidal effect Effects 0.000 claims description 13
- 239000013078 crystal Substances 0.000 claims description 12
- 238000000605 extraction Methods 0.000 claims description 11
- 238000004868 gas analysis Methods 0.000 claims description 8
- 238000001514 detection method Methods 0.000 claims description 6
- 230000001788 irregular Effects 0.000 claims description 6
- 238000002955 isolation Methods 0.000 claims description 6
- 238000004659 sterilization and disinfection Methods 0.000 claims description 6
- 230000008878 coupling Effects 0.000 claims description 4
- 238000010168 coupling process Methods 0.000 claims description 4
- 238000005859 coupling reaction Methods 0.000 claims description 4
- 238000000034 method Methods 0.000 claims description 4
- 239000011368 organic material Substances 0.000 claims description 3
- 239000004809 Teflon Substances 0.000 description 2
- 229920006362 Teflon® Polymers 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 244000005700 microbiome Species 0.000 description 2
- 241000711573 Coronaviridae Species 0.000 description 1
- 229940096437 Protein S Drugs 0.000 description 1
- 101710198474 Spike protein Proteins 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000000443 aerosol Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 102000039446 nucleic acids Human genes 0.000 description 1
- 108020004707 nucleic acids Proteins 0.000 description 1
- 150000007523 nucleic acids Chemical class 0.000 description 1
- 238000011012 sanitization Methods 0.000 description 1
- 230000001954 sterilising effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000003612 virological effect Effects 0.000 description 1
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L9/00—Disinfection, sterilisation or deodorisation of air
- A61L9/16—Disinfection, sterilisation or deodorisation of air using physical phenomena
- A61L9/18—Radiation
- A61L9/20—Ultraviolet radiation
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
- H01S3/005—Optical devices external to the laser cavity, specially adapted for lasers, e.g. for homogenisation of the beam or for manipulating laser pulses, e.g. pulse shaping
- H01S3/0071—Beam steering, e.g. whereby a mirror outside the cavity is present to change the beam direction
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
- H01S3/02—Constructional details
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L2209/00—Aspects relating to disinfection, sterilisation or deodorisation of air
- A61L2209/10—Apparatus features
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- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Plasma & Fusion (AREA)
- Optics & Photonics (AREA)
- Health & Medical Sciences (AREA)
- Epidemiology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Disinfection, Sterilisation Or Deodorisation Of Air (AREA)
Abstract
The present disclosure provides a cavity-type ultraviolet laser virus killing device, comprising an ultraviolet laser system and a shell; the ultraviolet laser system is used for generating tunable ultraviolet light with the wavelength of 200 and 256 nm; the device comprises a shell, a gas inlet channel, a gas outlet channel and a gas inlet channel, wherein the shell is used for containing gas to be sterilized; the air inlet channel and the air outlet channel are respectively provided with a light screen, the light screen comprises two perforated plates, through holes are uniformly formed in the perforated plates, and the through holes in the two perforated plates are arranged in a staggered manner; the shell comprises a light incident port, the light incident port is provided with a transmission grating, and the ultraviolet light is diffracted into a plurality of ultraviolet light beams which are transmitted along different directions through the transmission grating; the inner wall of the shell is provided with a plurality of diffuse reflection plates, and ultraviolet light is subjected to multiple reflections in the shell through the diffuse reflection plates to sterilize. The device can effectively disinfect air.
Description
Technical Field
The invention relates to the technical field of virus killing devices in air, in particular to a cavity type ultraviolet laser virus killing device.
Background
At present, ultraviolet sterilization and disinfection devices are applied more, wherein UVA (wavelength of 400-.
Disclosure of Invention
In order to overcome the defects, the invention aims to provide a cavity type ultraviolet laser virucidal device.
According to the specific embodiment of the invention, the cavity type ultraviolet laser virus killing device comprises an ultraviolet laser system and a shell; the ultraviolet laser system is used for generating tunable ultraviolet light with the wavelength of 200 and 256 nm;
the device comprises a shell, a gas inlet channel, a gas outlet channel and a gas inlet channel, wherein the shell is used for containing gas to be sterilized; the air inlet channel and the air outlet channel are respectively provided with a light screen, the light screen comprises two perforated plates, through holes are uniformly formed in the perforated plates, and the through holes in the two perforated plates are arranged in a staggered manner;
the shell comprises a light incident port, the light incident port is provided with a transmission grating, and the ultraviolet light is diffracted into a plurality of ultraviolet light beams which are transmitted along different directions through the transmission grating; the inner wall of the shell is provided with a plurality of diffuse reflection plates, and ultraviolet light is subjected to multiple reflections in the shell through the diffuse reflection plates to sterilize.
Optionally, the diffuse reflection plate includes a base plate and an optical structure disposed on the base plate, and the optical structure reflects the ultraviolet laser incident thereon toward an unspecified direction.
Optionally, the optical structure includes a plurality of cones arranged at intervals, each of the cones has a different cross section, and the interval is 1-10 mm.
Optionally, the pyramid comprises a triangular pyramid, a rectangular pyramid, a pentagonal pyramid, and a cone; the angles of the edges of the triangular pyramid, the rectangular pyramid and the pentagonal pyramid and the angle of the bottom plate are different.
Optionally, the side of the pyramid comprises a plurality of discrete irregular protrusions, the protrusions having a height of less than 1-5 mm.
Optionally, the diffuse reflective plate comprises a molded organic material plate having an irregular surface that diffusely reflects incident ultraviolet laser light.
Optionally, the inlet duct includes air supply system for promote the inlet velocity, the outlet duct includes exhaust system for take out the purified gas that finishes with the virus killing from the casing.
Optionally, the gas detection device is further included, and is used for detecting the gas in the shell; the gas detection device comprises a gas extraction device positioned at the top of the shell and a gas analysis device connected with the gas extraction device, and the gas analysis device is used for detecting the gas extracted by the gas extraction device in real time.
Optionally, the transmission grating has a linear density of 10000-.
Optionally, the ultraviolet laser system includes: the method comprises the steps that pump light emitted by a pump laser is incident to an isolation device, the pump light transmitted by the isolation device is incident to a first total reflection mirror, the first total reflection mirror is a total reflection mirror with a critical angle of 0 degree, the pump light transmitted by the total reflection mirror is incident to a crystal, the length of the crystal along the light incidence direction is 15mm, the pump light is absorbed by the crystal to generate first wavelength laser, the first wavelength laser is incident to a second total reflection mirror, and the second total reflection mirror is a total reflection mirror with a critical angle of 45 degrees; the first wavelength laser totally reflected by the second total reflection mirror is incident to the frequency doubling component, and ultraviolet light with the second wavelength is generated after frequency doubling by the frequency doubling component and is output from the output coupling mirror.
The invention has the following beneficial effects: the cavity type ultraviolet laser virus killing device is simple in structure, the reflector plate in the shell reflects incident ultraviolet laser for multiple times through the matching of the shell and the laser system which are specially designed, the ultraviolet intensity and density in the cavity are enhanced, the virus killing effect is improved, meanwhile, gas after virus killing can be effectively led out, and purified gas is obtained continuously, so that virus gas is effectively controlled.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated.
Fig. 1 is a schematic structural view of a laser virucidal device according to embodiment 1 of the present invention.
Fig. 2 is a schematic view of an optical structure in embodiment 1 of the present invention.
Fig. 3 is a schematic structural view of a laser virucidal device in embodiment 2 of the present invention.
FIG. 4 is an enlarged view of the structure at the air inlet of the present invention.
Detailed Description
To make the objects, technical solutions and advantages of the embodiments of the present disclosure more clear, the technical solutions of the embodiments of the present disclosure will be described clearly and completely with reference to the drawings in the embodiments of the present disclosure, and it is obvious that the described embodiments are some, but not all embodiments of the present disclosure. All other embodiments, which can be derived by a person skilled in the art from the embodiments disclosed herein without making any creative effort, shall fall within the protection scope of the present disclosure.
It should be understood that although the terms first, second, third, etc. may be used in the embodiments of the present disclosure, these descriptions should not be limited to these terms. These terms are used only to distinguish one from another. For example, a first could also be termed a second, and, similarly, a second could also be termed a first, without departing from the scope of embodiments of the present disclosure.
According to an embodiment of the present invention, as shown in fig. 1, there is provided a cavity-type uv laser virucidal device, including a uv laser system 4 and a housing 1; the ultraviolet laser system is used for generating tunable ultraviolet light with the wavelength of 200-266 nm;
as an alternative embodiment, through experimental research, the ultraviolet light with the wavelength of 222nm has a more effective killing effect on viruses, and can effectively reduce the viral load of aerosol, such as coronavirus, virus spike protein and the like. Specifically, the laser output of 222nm was obtained by the following embodiment. The ultraviolet laser system includes: pump light emitted by a pump laser is incident to an isolating device, the pump light transmitted by the isolating device is incident to a first total reflection mirror, the first total reflection mirror is a total reflection mirror with a critical angle of 0 degree, the pump light transmitted by the total reflection mirror is incident to a crystal, the length of the crystal along the light incidence direction is 15-25mm, the pump light is absorbed by the crystal to generate first wavelength laser with 888nm, the first wavelength laser is incident to a second total reflection mirror, and the second total reflection mirror is a total reflection mirror with a critical angle of 45 degrees; the first wavelength laser totally reflected by the second total reflection mirror is incident to the 4 frequency doubling component, ultraviolet light with the second wavelength of 222nm is generated after frequency doubling by the frequency doubling component, and the ultraviolet light is output from the output coupling mirror.
As an alternative embodiment, the uv laser system comprises: the method comprises the steps that pump light emitted by a pump laser enters an isolation device, the pump light transmitted by the isolation device enters a first total reflection mirror, the first total reflection mirror is a total reflection mirror with a critical angle of 0 degree, the pump light transmitted by the total reflection mirror enters a crystal, the length of the crystal along the light incidence direction is 15-25mm, the pump light is absorbed by the crystal to generate a first wavelength laser with a wavelength of 1064nm, the first wavelength laser enters a second total reflection mirror, and the second total reflection mirror is a total reflection mirror with a critical angle of 45 degrees; the first wavelength laser totally reflected by the second total reflection mirror is incident to the 4 frequency doubling component, ultraviolet light with a second wavelength of 266nm is generated after frequency doubling by the frequency doubling component, and the ultraviolet light is output from the output coupling mirror.
The gas disinfection device comprises a shell 1, a gas inlet channel 2, a gas outlet channel 3, a gas inlet channel and a gas outlet channel, wherein the shell 1 is used for containing gas to be disinfected; intake duct 2 and 3 departments of ventiduct all are equipped with the light screen, for example intake duct 2 is equipped with light screen 201 and light screen 202, and ventiduct 3 is equipped with light screen 301 and light screen 302, and every light screen includes two perforated plates, evenly seted up the through-hole on the perforated plate, the setting of staggering each other of through-hole on two perforated plates on light screen 201 and the light screen 202, the setting of staggering each other of through-hole on two perforated plates on light screen 301 and the light screen 302 avoids the light direct to jet out from intake duct 2 or air duct 3, arouses light loss.
The shell 1 comprises a light entrance port, the light entrance port is provided with a transmission grating 8, and the ultraviolet light is diffracted into a plurality of ultraviolet light beams which are transmitted along different directions through the transmission grating 8; the inner wall of the shell is provided with a plurality of diffuse reflection plates 7, and the ultraviolet light is disinfected through multiple reflections in the shell by the diffuse reflection plates. The diffuse reflection plates can be discretely arranged on the inner wall of the shell or arranged on the whole surface of the inner wall of the shell. Optionally, the transmission grating has a linear density of 10000-. The transmission grating having the above-described parametric structure can obtain 10 th order diffracted light, ensuring that the density of ultraviolet light is sufficiently large.
Alternatively, as will be understood with reference to the schematic diagram of fig. 2, the diffuse reflection plate includes a base 702 and an optical structure 703 disposed on the base, the optical structure reflecting the ultraviolet laser incident thereon toward an unspecified direction.
Optionally, the optical structure 703 includes a plurality of cones arranged at intervals, and each of the cones has a different cross-section, so as to ensure that light input into the cone is reflected in different directions, and after multiple reflections in different directions, the light in the housing 1 has sufficient optical density, so as to form an effective disinfection space, where the cones may be discrete, and the interval between the discrete cones is 1-10 mm.
Optionally, the pyramid comprises a triangular pyramid, a rectangular pyramid, a pentagonal pyramid, and a cone; the angles of the edges of the triangular pyramid, the rectangular pyramid and the pentagonal pyramid and the angle of the bottom plate are different. The angle is different from 0 to 90 degrees, for example, 30 to 60 degrees, so that the side face of the cone can effectively reflect the incident light, and experiments prove that the incident light is reflected at the reflecting plates for the most times under the condition that the optical structure is matched with the space size (the distance between the reflecting plates) of the shell at the angle of 30 to 60 degrees.
Optionally, the sides of the pyramid comprise a plurality of discrete irregular protrusions 704, the protrusions having a height of less than 1-5 mm. The greater the density of the protrusions 704, the better the light reflection effect, e.g. 1000-2. The shape of the protrusion 704 may be circular or square.
Optionally, the diffuse reflection plate comprises a molded organic material plate having an irregular surface that diffusely reflects incident ultraviolet laser light, such as a teflon molded plate, and experiments prove that the teflon molded plate can achieve uniform diffuse reflection for ultraviolet light of 222 nm.
Optionally, as shown in fig. 1, the inlet duct includes an air supply system 203 for increasing the inlet air speed, and the outlet duct includes an air exhaust system 303 for exhausting the sanitized clean gas from the housing. The intake duct also includes a valve controlled by a control system (not shown), which a user can open or close as desired to control the amount of intake air.
Optionally, the gas detection device is further included, and is used for detecting the gas in the shell; the gas detection device comprises a gas extraction device 5 positioned at the top of the shell and a gas analysis device 6 connected with the gas extraction device 5, and the gas analysis device is used for detecting the gas extracted by the gas extraction device in real time. In the disinfection process, the gas extraction device can be controlled to obtain a gas sample in the shell, the gas sample is transmitted to the gas analysis device 6, the gas analysis device 6 determines whether the virus concentration in the gas reaches an expected target or not by analyzing components in the gas, and when the expected target is reached, the control system controls the air extraction system 303 to extract the disinfected gas in the shell.
As another embodiment, as shown in fig. 3 and 4, a cavity-type ultraviolet laser sterilization apparatus includes a housing 1, a laser 4, a laser power source 402, and an optical combination lens 5, wherein an inlet channel 2 is disposed at a front end of the housing 1, an outlet channel 3 is disposed at a rear end of the housing 1, the inlet channel 2 and the outlet channel 3 are disposed at two opposite sides of the housing 1, the laser 4 is disposed at a rear end of the housing 1, a laser emitting head 401 of the laser 4 faces a front end of the housing, the laser 4 is connected to the laser power source 402, the optical combination lens 5 is disposed in the housing 1 in front of the laser emitting head 401, a one-way transparent film 6 is plated in front of the optical combination lens 5, the optical combination lens 5 adopts a combination of a convex lens or a combination of a convex lens, a concave lens, and a planar lens to separate a laser beam into a light column, a diameter of the light column is the same as a diameter of a cavity, a reflective plate 7 is disposed on an inner, the diameter of the reflector plate 7 is the same as the diameter of the light pillar.
Specifically, the ultraviolet light generated by the laser 4 is 200-256nm, and the intensity can be adjusted.
Specifically, the air inlet duct 2, 3 departments of exhaust duct all are equipped with the light screen, including two perforated plates, for example, the first perforated plate 201 of air inlet duct department, second perforated plate 202, the third perforated plate 301 of exhaust duct, fourth perforated plate 302, as shown in fig. 2, a plurality of first through-holes 2011 have evenly been seted up on the first perforated plate 201, a plurality of second through-holes 2021 have evenly been seted up on the second perforated plate 202, the first through-hole 2011 of first perforated plate 201 and the second through-hole 2021 of second perforated plate 202 stagger and place, make its first through-hole 2011 and second through-hole 2021 misalignment, be used for preventing the laser ultraviolet in the cavity from leaking.
One side of the shell 1 is connected with an induced draft fan, the diameter of the cavity of the shell 1, the length of the cavity, the laser intensity and the air inlet speed of the air inlet channel 2 are variable and are changed according to the use requirement, the intensity of killing viruses is ensured, the laser generates ultraviolet rays of 200-.
The optical combined lens 5 evolves the UVC band ultraviolet light emitted by the laser emitting head 401 into a light column, as shown in fig. 1, after reaching the reflection plate at the other end of the cavity, the UVC band ultraviolet light is reflected to the combined lens plated with the one-way reflection film through the reflection plate 7, the front of the combined lens is reflected for the second time, and reaches the end reflection film layer again, so that multiple reflection is formed, the UVC ultraviolet intensity in the shell 1 is enhanced, and the virus killing effect is enhanced; the UVC ultraviolet band is in the peak value range of virus absorption, the nucleic acid reproduction of DNA or RNA of microorganisms can be destroyed within 1 second, so that bonds and bond breakage can be caused, the microorganisms can not be replicated, and the virus killing effect can be achieved.
The cavity type ultraviolet laser virus killing device is simple in structure, the reflector plate in the shell reflects incident ultraviolet laser for multiple times through the matching of the shell and the laser system which are specially designed, the ultraviolet intensity and density in the cavity are enhanced, the virus killing effect is improved, meanwhile, gas after virus killing can be effectively led out, and purified gas is obtained continuously, so that virus gas is effectively controlled.
The above examples are only intended to illustrate the technical solutions of the present disclosure, not to limit them; although the present disclosure has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present disclosure.
Claims (10)
1. A cavity type ultraviolet laser virus killing device is characterized in that: comprises an ultraviolet laser system and a shell; the ultraviolet laser system is used for generating tunable ultraviolet light with the wavelength of 200-266 nm;
the device comprises a shell, a gas inlet channel, a gas outlet channel and a gas inlet channel, wherein the shell is used for containing gas to be sterilized; the air inlet channel and the air outlet channel are respectively provided with a light screen, the light screen comprises two perforated plates, through holes are uniformly formed in the perforated plates, and the through holes in the two perforated plates are arranged in a staggered manner;
the shell comprises a light incident port, the light incident port is provided with a transmission grating, and the ultraviolet light is diffracted into a plurality of ultraviolet light beams which are transmitted along different directions through the transmission grating; the inner wall of the shell is provided with a plurality of diffuse reflection plates, and ultraviolet light is subjected to multiple reflections in the shell through the diffuse reflection plates to sterilize.
2. The cavate uv laser virucidal apparatus according to claim 1, wherein: the diffuse reflection plate includes a base plate and an optical structure disposed on the base plate, the optical structure reflecting ultraviolet laser light incident thereon toward an unspecified direction.
3. The cavate uv laser virucidal apparatus according to claim 2, wherein: the optical structure comprises a plurality of cones arranged at intervals, the sections of the cones are different, and the intervals are 1-10 mm.
4. The cavate uv laser virucidal apparatus according to claim 3, wherein: the cone comprises a triangular pyramid, a rectangular pyramid, a pentagonal pyramid and a cone; the angles of the edges of the triangular pyramid, the rectangular pyramid and the pentagonal pyramid and the angle of the bottom plate are different.
5. The cavate uv laser virucidal apparatus according to claim 4, wherein: the sides of the pyramid comprise a plurality of discrete irregular protrusions having a height of less than 1-5 mm.
6. The cavate uv laser virucidal apparatus according to claim 1, wherein: the diffuse reflective plate includes a molded organic material sheet having an irregular surface that diffusely reflects incident ultraviolet laser light.
7. The cavate uv laser virucidal apparatus according to claim 1, wherein: the air inlet channel comprises an air supply system for improving air inlet speed, and the air outlet channel comprises an air draft system for exhausting purified gas after disinfection from the shell.
8. The cavate uv laser virucidal apparatus according to claim 1, wherein: the gas detection device is used for detecting the gas in the shell; the gas detection device comprises a gas extraction device positioned at the top of the shell and a gas analysis device connected with the gas extraction device, and the gas analysis device is used for detecting the gas extracted by the gas extraction device in real time.
9. The cavate uv laser virucidal apparatus according to claim 1, wherein: the transmission grating has a linear density of 3000-.
10. The cavate uv laser virucidal apparatus according to claim 1, wherein: the ultraviolet laser system includes: the method comprises the steps that pump light emitted by a pump laser is incident to an isolation device, the pump light transmitted by the isolation device is incident to a first total reflection mirror, the first total reflection mirror is a total reflection mirror with a critical angle of 0 degree, the pump light transmitted by the total reflection mirror is incident to a crystal, the length of the crystal along the light incidence direction is 15mm, the pump light is absorbed by the crystal to generate first wavelength laser, the first wavelength laser is incident to a second total reflection mirror, and the second total reflection mirror is a total reflection mirror with a critical angle of 45 degrees; the first wavelength laser totally reflected by the second total reflection mirror is incident to the frequency doubling component, and ultraviolet light with the second wavelength is generated after frequency doubling by the frequency doubling component and is output from the output coupling mirror.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011089802.6A CN112202037A (en) | 2020-10-13 | 2020-10-13 | Cavity type ultraviolet laser virus killing device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011089802.6A CN112202037A (en) | 2020-10-13 | 2020-10-13 | Cavity type ultraviolet laser virus killing device |
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| CN112202037A true CN112202037A (en) | 2021-01-08 |
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| CN202011089802.6A Pending CN112202037A (en) | 2020-10-13 | 2020-10-13 | Cavity type ultraviolet laser virus killing device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113406794A (en) * | 2021-06-23 | 2021-09-17 | 辽宁大学 | Laser optical path system with laser biological inactivation function |
| CN113425883A (en) * | 2021-07-28 | 2021-09-24 | 广东国志激光技术有限公司 | Air purification method by utilizing unstable resonator to reflect ultraviolet laser |
| CN114259596A (en) * | 2021-12-21 | 2022-04-01 | 广东国志激光技术有限公司 | Negative pressure isolation cabin laser degassing unit |
-
2020
- 2020-10-13 CN CN202011089802.6A patent/CN112202037A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113406794A (en) * | 2021-06-23 | 2021-09-17 | 辽宁大学 | Laser optical path system with laser biological inactivation function |
| CN113425883A (en) * | 2021-07-28 | 2021-09-24 | 广东国志激光技术有限公司 | Air purification method by utilizing unstable resonator to reflect ultraviolet laser |
| CN114259596A (en) * | 2021-12-21 | 2022-04-01 | 广东国志激光技术有限公司 | Negative pressure isolation cabin laser degassing unit |
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