CN211955312U - Air ionization display device - Google Patents
Air ionization display device Download PDFInfo
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- CN211955312U CN211955312U CN202020103104.6U CN202020103104U CN211955312U CN 211955312 U CN211955312 U CN 211955312U CN 202020103104 U CN202020103104 U CN 202020103104U CN 211955312 U CN211955312 U CN 211955312U
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Abstract
The utility model discloses an air ionization display device, including a plurality of pulse light output unit, every pulse light output unit includes: the pulse light source, shake mirror subassembly and lens subassembly, the output beam process of pulse light source shake the adjusting action of mirror subassembly with the focus effect of lens subassembly is at the focal region ionization air formation holographic real image of lens subassembly, and is a plurality of the holographic real image of pulse light output unit mutually supports and constitutes the combination real image. According to the utility model discloses an air ionization display device adopts the way of a plurality of pulse light output unit combinations to make up into a holistic combination real image with a plurality of holographic real images, and the regional scope of increase formation of image that from this can be by a wide margin has promoted air ionization display device's formation of image efficiency.
Description
Technical Field
The utility model belongs to the technical field of air ionization and specifically relates to an air ionization display device is related to.
Background
The air ionization display system is characterized in that a high-power pulse light source outputs laser pulses, the laser pulses are modulated by a spatial light modulator to form a light field, the light field is reflected to a galvanometer system to adjust the emergent direction of the galvanometer system, light beams penetrate through a zoom lens and a flat field focusing lens and then are focused to a specified point in an air ionization region, and finally the high-power laser ionizes air molecules to form a luminous spot. And the computer actively controls the spatial light modulator, the galvanometer system and the zoom lens, and adjusts the position of the laser ionization point and the pixels of the display picture according to the picture to be displayed. The air ionization display system in the related art is influenced by factors such as a galvanometer system, a zoom lens and the like, and the air ionization display image area is small, so that the air imaging display requirement of a large image cannot be met.
SUMMERY OF THE UTILITY MODEL
The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, the utility model provides an air ionization display device, air ionization display device can enlarge the regional scope of formation of image through making up a plurality of pulse light output unit.
According to the utility model discloses an air ionization display device, including a plurality of pulse light output unit, every pulse light output unit includes: the pulse light source, shake mirror subassembly and lens subassembly, the output beam process of pulse light source shake the adjusting action of mirror subassembly with the focus effect of lens subassembly is at the focus area ionized air of lens subassembly and is formed holographic real image, and is a plurality of pulse light output unit ionized air forms respective holographic real image mutually supporting and makes up into whole real image.
According to the utility model discloses an air ionization display device adopts the way of a plurality of pulse light output unit combinations to make up into a holistic combination real image with a plurality of holographic real images, and the regional scope of increase formation of image that from this can be by a wide margin has promoted air ionization display device's formation of image efficiency.
In addition, according to the present invention, the air ionization display device may further have the following additional technical features:
according to some embodiments of the utility model, the air ionization display device still includes the control computer, the control computer signal connection is a plurality of pulse light output unit is used for control the formation of image state of holographic real image is in order to constitute the combination real image.
According to some embodiments of the utility model, perpendicular to holographic real image with in the plane direction of line between the pulse light output unit, it is a plurality of pulse light output unit becomes the multirow multiseriate and arranges.
According to some embodiments of the utility model, pulse light output unit group is gone up in some constitution in a plurality of pulse light output unit, pulse light output unit group under another part constitution in a plurality of pulse light output unit, go up in the pulse light output unit group the holographic real image that pulse light output unit group formed is located go up the below of pulse light output unit group, down in the pulse light output unit group the holographic real image that pulse light output unit group formed is located down the top of pulse light output unit group.
According to some embodiments of the utility model, the pulse light output unit still includes spatial light modulator, spatial light modulator is located pulsed light source with be used for adjusting the parameter of light beam between the mirror subassembly that shakes.
According to some embodiments of the present invention, the pulsed light output unit further comprises: the pulse light source, the galvanometer component and the lens component are all arranged in the shell, and a pulse output port is formed in the part, located between the focus of the lens component and the focus of the lens component, in the shell.
According to some embodiments of the invention, the lens assembly comprises a zoom lens and a plano-field focusing lens, the zoom lens being located between the plano-field focusing lens and the galvanometer assembly.
According to some embodiments of the present invention, the pulse width of the pulsed light source is 50fs-100ns, the pulse energy of the pulsed light source is 20 μ J-10mJ, and the repetition frequency of the pulsed light source is 500Hz-10 MHz.
According to some embodiments of the present invention, the pulse light source in the pulse light output unit is a plurality of, the pulse light output unit further includes a beam combiner, a repetition frequency adjustment assembly, a pulse time delay monitor and at least one time delay line.
The light beams of the plurality of pulse light sources are projected on the beam combining mirror and combined into one light beam, the light beam emitted by the beam combining mirror is projected into the vibrating mirror assembly, the repetition frequency adjusting assembly is arranged between the pulse light sources and the beam combining mirror and used for adjusting the repetition frequency of the plurality of pulse light sources, the pulse time delay monitor is arranged between the beam combining mirror and the vibrating mirror assembly and used for monitoring pulse delay signals of the light beam emitted by the beam combining mirror, and the time delay line is arranged between the pulse light sources and the beam combining mirror and connected with the pulse time delay monitor in a signal mode and used for compensating pulse time delay of the light beam emitted by the pulse light sources according to feedback information of the pulse time delay monitor.
According to the utility model discloses a some embodiments, repetition frequency adjustment subassembly includes a plurality of photoelectric detector, frequency reference source and servo controller, and is a plurality of photoelectric detector establishes one-to-one a plurality of be used for surveying between the pulsed light source the repetition frequency of pulsed light source, the frequency reference source is used for providing the frequency reference standard, servo controller signal connection photoelectric detector the frequency reference source with the pulsed light source, be used for the basis photoelectric detector's feedback signal with the reference frequency signal control of frequency reference source the repetition frequency of pulsed light source output pulse.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
fig. 1 is a schematic structural view of an air ionization display device according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a pulsed light output unit according to an embodiment of the present invention;
fig. 3 is a schematic structural view of an air ionization display device according to another embodiment of the present invention.
Reference numerals:
100: an air ionization display device;
10: a pulsed light output unit; 11: a pulsed light source; 12: a galvanometer component; 13: a lens assembly; 131: a zoom lens; 132: a flat field focusing lens; 14: an upper pulse light output unit group; 15: a lower pulse light output unit group;
20: a control computer;
30: a spatial light modulator;
40: a housing; 41: a pulse output port;
50: a display area.
Detailed Description
Reference will now be made in detail to the embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.
An air ionization display device according to an embodiment of the present invention is described below with reference to fig. 1 to 3.
According to some embodiments of the present invention, the air ionization display device 100 includes a plurality of pulsed light output units 10, and each pulsed light output unit 10 includes a pulsed light source 11, a galvanometer assembly 12, and a lens assembly 13.
Wherein, pulsed light source 11's output light beam is through projecting on the mirror subassembly 12 that shakes, and mirror subassembly 12 that shakes includes two sets of speculums of perpendicular setting, and two sets of speculums make the light beam carry out the swing of front and back and left and right directions respectively, and then the irradiation route of control light beam. The emergent light beam passing through the galvanometer component 12 is projected onto the lens component 13, the lens component 13 focuses the light beam, the power density of the light beam is increased after the light beam is concentrated at the focal position of the lens component 13, the power threshold of ionized air generated by laser is reached, finally, the high-power laser ionizes air molecules to form a luminous bright point, and then a holographic real image required by a user is formed. In the process, the range of the holographic real image formed by the single pulse light output unit 10 is small, and a complex figure required by a user cannot be formed.
For this reason, the air ionization display device 100 is provided with the plurality of pulsed light output units 10, and the holographic real images output by the plurality of pulsed light output units 10 are matched with each other to form a combined real image, so that the imaging area of the air ionization display device 100 can be greatly increased, and the pulsed light output units 10 can be adjusted according to imaging requirements, thereby meeting the requirements of large-scale imaging and complex imaging.
In the air ionization display system in the prior art, due to factors such as the galvanometer component and the zoom lens, the range of a picture which can be displayed by the air ionization system is small, the air display requirement of a large picture cannot be met, and if the galvanometer component and the lens component which have higher use requirements need to be greatly increased, the cost input is required to be greatly increased.
According to the utility model discloses air ionization display device 100, the scheme that adopts the combination of a plurality of pulse light output unit 10 makes up into holistic combination real image with a plurality of holographic real images, increase the regional scope of formation of image by a wide margin from this, air ionization display device 100's imaging efficiency has been promoted, compare with the air ionization display system among the prior art, not only promoted the regional scope of formation of image, moreover lower to the requirement of mirror subassembly 12 and lens subassembly 13 that shakes, be favorable to reduction in production cost.
According to the embodiment of the present invention, the air ionization display device 100 further comprises a control computer 20, since the industrial objects faced by many modern control software are no longer simple single task lines, but rather are complex multitask systems, the single task lines can only control the flow of the whole work by a physical method or a simple system, but the complex multitask systems in real life cannot control the flow of the whole work by a physical method or a simple system, so the control computer 20 is needed, and the control computer 20 is in signal connection with the pulse light output units 10 for controlling the imaging state of the holographic real image to form a combined real image.
The control computer 20 is connected with the pulse light output units 10 through the signals, the corresponding control program is arranged in the control computer 20 to regulate and control the pulse light output units 10, the control computer 20 can adjust the parameters such as the position, the structure and the like of the holographic real image formed by the pulse light output units 10 according to the imaging requirement, and can adjust the holographic real image according to the real-time working states of the pulse light output units 10, so that the holographic real images formed by the pulse light output units 10 can be smoothly spliced to form a combined real image, and the combined real image can be displayed or played according to the requirement.
As shown in fig. 2, according to some embodiments of the present invention, the plurality of pulsed light output units 10 are arranged in a plurality of rows and a plurality of columns in a plane direction perpendicular to a line between the holographic real image and the pulsed light output unit 10, for example, the pulsed light output unit 10 forms the holographic real image toward a vertical upper side. The plurality of pulse light output units 10 are arranged in multiple rows and multiple columns in the horizontal direction, the structure is simple, the implementation is easy, and the multiple rows and multiple columns of the pulse light output units 10 can reduce the overall volume of the air ionization display device 100, so that the occupied space is saved; furthermore, interference between two adjacent pulsed light output units 10 can be reduced, blocking of imaging paths of two adjacent pulsed light output units 10 is prevented, and imaging stability of the air ionization display device 100 is improved.
As shown in fig. 3, according to other embodiments of the present invention, a part of the plurality of pulsed light output units 10 constitutes the upper pulsed light output unit group 14, another part of the plurality of pulsed light output units 10 constitutes the lower pulsed light output unit group 15, a holographic real image formed by the pulsed light output unit group in the upper pulsed light output unit group 14 is located below the upper pulsed light output unit group 14, and a holographic real image formed by the pulsed light output unit group in the lower pulsed light output unit group 15 is located above the lower pulsed light output unit group 15.
That is, the combined real image formed by the air ionization display device is located between the upper pulse light output unit group 14 and the lower pulse light output unit group 15, the pulse light output units in the upper pulse light output unit group 14 project downward to form a holographic real image, the pulse light output units in the lower pulse light output unit group 15 project upward to form a holographic real image, and the holographic real images formed by the upper pulse light output unit group 14 and the lower pulse light output unit group 15 collectively form the combined real image between the upper pulse light output unit group 14 and the lower pulse light output unit group 15.
By providing the upper pulse light output unit group 14 and the lower pulse light output unit group 15, the three-dimensional height of the combined real image can be increased, and the upper pulse light output unit group 14 and the lower pulse light output unit group 15 do not interfere with each other.
According to some embodiments of the present invention, the pulsed light output unit 10 further includes: the shell 40, the pulse light source 11, the galvanometer assembly 12 and the lens assembly 13 are all arranged in the shell 40, a pulse output port 41 is formed in a part of the shell 40 between the lens assembly 13 and a focus of the lens assembly 13, and a pulse light beam can be projected on the display area 50 through the pulse output port 41. Through setting up casing 40, not only can protect pulsed light source 11, galvanometer component 12 and lens subassembly 13 not damaged, can also promote pulsed light output unit 10's structural integrity, moreover, have casing 40's pulsed light output unit 10, it is comparatively convenient in the arrangement process, and circuit simple structure provides convenience for the combination of a plurality of pulsed light output unit 10.
According to some embodiments of the present invention, lens assembly 13 includes zoom lens 131 and flat field focusing lens 132, zoom lens 131 is located between flat field focusing lens 132 and galvanometer assembly 12, high power pulsed light source 11 output laser pulse modulates the light field through spatial light modulator 30, then reflects to galvanometer assembly 12 and adjusts its outgoing direction, the light beam passes through zoom lens 131 and flat field focusing lens 132 and focuses on appointed point in the air ionization region, and high power laser ionization air molecule forms luminous bright spot at last.
The zoom lens 131 can adjust the distance between the focal point and the zoom lens 131 according to the imaging requirement, and further can generate a holographic real image and a combined real image of a three-dimensional structure by adjusting the focal point position, and the flat field focusing lens 132 is used to cooperate with the zoom lens 131, so that the holographic real image and the combined real image can be prevented from bending deformation in the imaging process, the control computer 20 actively controls the spatial light modulator 30, the galvanometer component 12 and the lens component 13, and adjusts the position of the laser ionization point and the pixels of the display picture according to the picture to be displayed.
According to some embodiments of the present invention, the pulsed light output unit 10 further includes a spatial light modulator 30, the spatial light modulator 30 modulates the spatial distribution of the light wave, the spatial light modulator 30 includes a plurality of independent units spatially arranged in a one-dimensional or two-dimensional array, each unit can independently receive the control of the light signal or the electric signal, and change its optical properties (transmittance, reflectivity, refractive index, etc.) according to the signal, thereby modulating the light wave passing through it. The spatial light modulator 30 is located between the beam combiner and the galvanometer component 12, and when the light beam passes through the spatial light modulator 30, the optical parameters (amplitude, intensity, phase or polarization state) of the light beam are modulated by the units of the spatial light modulator 30, and as a result, the light beam becomes an output light with a new spatial distribution of the optical parameters.
By arranging the spatial light modulator 30, parameters such as amplitude, phase and polarization state of the light beam generated by the pulse light source 11 are adjusted, the light beam modulates a light field through the spatial light modulator 30, and a plurality of focusing points are formed after the light beam passes through the lens assembly, so that the imaging quality of a display picture can be improved.
According to some embodiments of the present invention, the repetition frequency of the plurality of pulse light output units 10 is the same, the pulse width of the pulse light source 11 is 50fs-100ns, the pulse energy of the pulse light source 11 is 20 μ J-10mJ, the repetition frequency of the pulse light source 11 is 500Hz-10MHz, the light beam generated by the pulse light source 11 in the above range can improve the imaging effect and the pixel of the holographic real image, and the pulse light output units 10 with the same repetition frequency can provide convenience for the combination of the holographic real image.
According to some embodiments of the present invention, the pulse light source 11 in the pulse light output unit 10 is plural, and the pulse light output unit 10 further includes a beam combiner, a repetition frequency adjusting component, a pulse time delay monitor, and at least one time delay line.
Each pulse light source 11 of the plurality of pulse light sources 11 generates a pulse light beam, the light beams of the plurality of pulse light sources 11 are projected onto the beam combiner after refraction and reflection, and are combined into a light beam, the light beam combined by the beam combiner is projected into the light field regulating and controlling assembly, and the light field regulating and controlling assembly regulates and combines the light beam and ionizes air in the display area 50 to form a holographic real image.
The repetition frequency adjusting component is arranged between the pulsed light source 11 and the beam combining mirror and is used for adjusting the repetition frequency of the plurality of pulsed light sources 11, the repetition frequency adjusting component is in signal connection with the plurality of pulsed light sources 11 and can receive the pulse repetition frequency signals of the light beams projected by the plurality of pulsed light sources 11 and then adjust the pulsed light sources 11 according to the received repetition frequency signals. The repetition frequency of the pulsed light source 11 refers to the number of laser pulses generated by the pulsed light source 11 per second, and the pulse repetition frequencies of the multiple light beams emitted by the multiple pulsed light sources 11 can be strictly locked at the same value by the repetition frequency adjusting component.
The pulse time delay monitor is arranged between the beam combiner and the light field regulation and control component and used for monitoring pulse delay signals of light beams emitted by the beam combiner, paths of the light beams generated by different pulse light sources 11 reaching the beam combiner are different, for example, a light beam generated by one pulse light source 11 is linearly irradiated onto the beam combiner, a light beam generated by the other pulse light source 11 is firstly reflected and then irradiated onto the beam combiner, so that pulse time delay exists after the light beams generated by the two pulse light sources 11 are combined, and pulse time delay caused by pulse transmission optical path difference and repetition frequency low-frequency jitter is compensated for the light beam generated by the pulse light source 11 according to a feedback signal of the pulse time delay monitor through a time delay line which is arranged between the pulse light source 11 and the beam combiner and is connected with the pulse time delay monitor, so that the time of the two pulses is synchronized after the light beams are combined.
In the process of forming one light beam by the light beams generated by the plurality of pulse light sources 11 through the beam combiner, the light beam generated by one pulse light source 11 may pass through the beam combiner, and the light beams generated by the other pulse light sources 11 are reflected and combined with the light beam passing through the beam combiner, so that the reflected and combined light beam can be adjusted by taking the light beam passing through the beam combiner as a reference.
At this time, the number of the reflected light beams is one less than that of the pulse light sources 11, so the number of the time delay lines is one less than that of the pulse light sources 11, the time delay lines correspond to the pulse light sources 11 with the same number one by one, and each delay line controls the pulse delay of the light beam generated by one pulse light source 11, so that the light beams generated by a plurality of pulse light sources 11 can be combined into one pulse light beam when passing through the beam combining mirror, and the combined light beam is prevented from being influenced by the air ionization imaging because the combined light beam has the pulse delay and the instantaneous power of the combined light beam is not superposed to the highest.
According to some embodiments of the present invention, the repetition frequency adjustment assembly comprises a plurality of photodetectors, a frequency reference source, and a servo controller.
The number of the photodetectors is the same as that of the pulse light sources 11, and the photodetectors are correspondingly arranged between the pulse light sources 11 and the beam combiner and are used for detecting the repetition frequency of the pulses output by the pulse light sources 11. The frequency reference source is used to provide a frequency reference standard for the servo controller. The servo controller is in signal connection with the photoelectric detector, the frequency reference source and the pulse light source 11, a light beam is irradiated on the photoelectric detector corresponding to the pulse light source 11 to generate a feedback signal, and the servo controller can control the pulse light source 11 to output the repetition frequency of pulses according to the feedback signal of the photoelectric detector. After receiving the repetition frequency parameter of the output pulse of the pulse light source 11 fed back by the photoelectric detector, the servo controller compares the repetition frequency parameter with the frequency parameter provided by the frequency reference source, and if the repetition frequency parameter of the output pulse of the pulse light source 11 does not meet the requirement, the servo controller adjusts the pulse light source 11 until the repetition frequency parameter of the output pulse of the pulse light source 11 meets the requirement.
Other constructions and operations according to embodiments of the invention are known to those of ordinary skill in the art and will not be described in detail herein.
In the description of the present invention, "the first feature" and "the second feature" may include one or more of the features.
In the description of the present invention, "a plurality" means two or more.
In the description of the present invention, the first feature "on" or "under" the second feature may include the first and second features being in direct contact, and may also include the first and second features being in contact with each other not directly but through another feature therebetween.
In the description of the invention, the first feature being "on", "above" and "above" the second feature includes the first feature being directly above and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example.
While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.
Claims (10)
1. An air ionization display device, comprising:
a plurality of pulsed light output units, the pulsed light output units including: the holographic real image forming device comprises a pulse light source, a galvanometer component and a lens component, wherein an output light beam of the pulse light source ionizes air in a focus area of the lens component through the adjusting action of the galvanometer component and the focusing action of the lens component to form a holographic real image;
and the holographic real images of the pulse light output units are matched with each other to form a combined real image.
2. The air ionization display device of claim 1, further comprising:
and the control computer is in signal connection with the pulse light output units and is used for controlling the imaging state of the holographic real image to form the combined real image.
3. The air ionization display device according to claim 1, wherein the plurality of pulsed light output units are arranged in a plurality of rows and columns in a plane direction perpendicular to a line connecting the holographic real image and the pulsed light output units.
4. The air ionization display device according to claim 1, wherein a part of the plurality of pulsed light output units constitutes an upper pulsed light output unit group, and another part of the plurality of pulsed light output units constitutes a lower pulsed light output unit group, and wherein a holographic real image formed by the pulsed light output unit group in the upper pulsed light output unit group is located below the upper pulsed light output unit group, and a holographic real image formed by the pulsed light output unit group in the lower pulsed light output unit group is located above the lower pulsed light output unit group.
5. The air ionization display device according to claim 1, wherein the pulsed light output unit further comprises: the pulse light source, the galvanometer component and the lens component are all arranged in the shell, and a pulse output port is formed in the part, located between the focus of the lens component and the focus of the lens component, in the shell.
6. The air ionization display device of claim 1, wherein the lens assembly comprises a zoom lens and a flat field focusing lens, the zoom lens being located between the flat field focusing lens and the galvanometer assembly.
7. The air ionization display device according to claim 6, wherein the pulsed light output unit further comprises: the spatial light modulator is positioned between the pulse light source and the galvanometer component and is used for adjusting parameters of the light beam.
8. The air ionization display device according to claim 1, wherein the pulse width of the pulsed light source is 50fs to 100ns, the pulse energy of the pulsed light source is 20 μ J to 10mJ, and the repetition frequency of the pulsed light source is 500Hz to 10 MHz.
9. The air ionization display device according to claim 1, wherein the pulse light source in the pulse light output unit is plural, the pulse light output unit further comprising:
the light beams of the pulse light sources are projected on the beam combiner and combined into one light beam, and the light beam emitted by the beam combiner is projected into the galvanometer component;
the repetition frequency adjusting component is arranged between the pulse light source and the beam combining mirror and is used for adjusting the repetition frequency of the plurality of pulse light sources;
the pulse time delay monitor is arranged between the beam combining mirror and the galvanometer component and is used for monitoring a pulse delay signal of a light beam emitted by the beam combining mirror;
and the time delay line is arranged between the pulse light source and the beam combining mirror, is in signal connection with the pulse time delay monitor and is used for compensating the pulse time delay of the light beam emitted by the pulse light source according to the feedback information of the pulse time delay monitor.
10. The air ionization display device of claim 9, wherein the repetition frequency adjustment assembly comprises:
the photoelectric detectors are arranged among the pulse light sources in a one-to-one correspondence mode and are used for detecting the repetition frequency of the pulse light sources;
a frequency reference source for providing a frequency reference standard;
and the servo controller is in signal connection with the photoelectric detector, the frequency reference source and the pulse light source and is used for controlling the output pulse repetition frequency of the pulse light source according to the feedback signal of the photoelectric detector and the reference frequency signal of the frequency reference source.
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|---|---|---|---|
| CN202020103104.6U CN211955312U (en) | 2020-01-16 | 2020-01-16 | Air ionization display device |
| PCT/CN2021/072081 WO2021143817A1 (en) | 2020-01-16 | 2021-01-15 | Air ionization display device |
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| CN202020103104.6U CN211955312U (en) | 2020-01-16 | 2020-01-16 | Air ionization display device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111141815A (en) * | 2020-01-16 | 2020-05-12 | 安徽省东超科技有限公司 | Air ionization display device |
| WO2021143817A1 (en) * | 2020-01-16 | 2021-07-22 | 安徽省东超科技有限公司 | Air ionization display device |
-
2020
- 2020-01-16 CN CN202020103104.6U patent/CN211955312U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111141815A (en) * | 2020-01-16 | 2020-05-12 | 安徽省东超科技有限公司 | Air ionization display device |
| WO2021143817A1 (en) * | 2020-01-16 | 2021-07-22 | 安徽省东超科技有限公司 | Air ionization display device |
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