CN217503896U

CN217503896U - Non-contact air purifier

Info

Publication number: CN217503896U
Application number: CN202220775566.1U
Authority: CN
Inventors: 范超; 韩东成
Original assignee: Anhui Easpeed Technology Co Ltd
Current assignee: Anhui Easpeed Technology Co Ltd
Priority date: 2022-04-02
Filing date: 2022-04-02
Publication date: 2022-09-27
Anticipated expiration: 2032-04-02

Abstract

The utility model discloses a non-contact air purifier, which comprises a shell provided with a plurality of air inlets and air outlets; the driving module is used for enabling air to enter the shell from the air inlet and to be discharged from the air outlet; the master control system is used for controlling the operation of the driving module; the optical display module sets up in the casing and links to each other with major control system, includes: the device comprises an imaging module, a detection module and a control module, wherein the imaging module is used for forming a floating real image in the air, the detection module is used for detecting the operation of a user on the floating real image and feeding back a detected interaction signal to the control module, the control module generates a corresponding control signal according to the interaction signal and sends the control signal to a master control system, and the master control system controls the operation of the driving module according to the control signal. According to the utility model provides a non-contact air purifier can reduce the degree of difficulty of controlling non-contact air purifier, and contactless operation is clean health simultaneously.

Description

Non-contact air purifier

Technical Field

The utility model belongs to the technical field of the air purifier technique and specifically relates to a non-contact air purifier is related to.

Background

In the prior art, the air purifier is generally provided with a touch display screen to display information of the air purifier, and a user can touch a button on the touch display screen to complete control of the air purifier. However, since the air purifier is likely to accumulate dust on the surface of the air purifier when being placed indoors for a long time, touch insensitivity and the like are likely to occur during the touch operation of a user. In addition, at the stage that the new crown epidemic situation is still not effectively controlled, cross infection of bacteria, viruses and the like is easy to occur when a user touches a touch display screen, and great hidden danger is brought to the health of the user.

SUMMERY OF THE UTILITY MODEL

The utility model provides a non-contact air purifier, non-contact air purifier has easily to control and contactless, clean health, advantage that the security performance is high.

The utility model provides a non-contact air purifier, which comprises a shell provided with a plurality of air inlets, an air outlet and an air channel structure, wherein the air channel structure is communicated with the air inlets and the air outlet; the driving module is used for enabling air to enter the shell from the air inlet and to be discharged from the air outlet; the master control system is connected with the driving module and is used for controlling the driving module to operate; the optical display module set up in the casing and link to each other with major control system, the optical display module set includes: the device comprises an imaging module, a detection module and a control module, wherein the imaging module is used for forming a floating real image in the air, the detection module is used for detecting the operation of a user on the floating real image and feeding back a detected interaction signal to the control module, the control module generates a corresponding control signal according to the interaction signal and sends the control signal to a master control system, and the master control system controls the operation of the driving module according to the control signal.

In some embodiments, the non-contact air purifier further comprises a filter device disposed within the housing, the filter device to filter air entering the air channel structure.

In some embodiments, the housing includes a plurality of sidewalls, wherein a cavity is disposed on one sidewall, and the optical display module is accommodated in the cavity.

In some embodiments, the side wall forms a fastening hole around the opening of the cavity, a hook is formed on the outer wall of the optical display module and is matched with the fastening hole, and the optical display module is tightly connected with the side wall through the matching of the hook and the fastening hole.

In some embodiments, the housing is provided with a protection member at the cavity, the protection member is flush with the side wall surface, and the protection member is used for protecting the optical display module received in the cavity.

In some embodiments, the driving module includes a first fan disposed near the air inlet to accelerate the air entering the air inlet, and a second fan disposed near the air outlet to accelerate the air exiting the air outlet.

In some embodiments, the imaging module includes an equivalent negative refractive index optical element and a display, the display is disposed on one side of the equivalent negative refractive index optical element, and after light emitted by the display passes through the equivalent negative refractive index optical element, a floating real image opposite to the display is formed on the other side of the equivalent negative refractive index optical element.

In some embodiments, the equivalent negative index optical element comprises: the optical waveguide array comprises a first optical waveguide array and a second optical waveguide array, wherein the first optical waveguide array and the second optical waveguide array are tightly attached to each other on the same plane and are arranged orthogonally.

In some embodiments, the first optical waveguide array or the second optical waveguide array is composed of a plurality of parallel-arranged reflecting units arranged obliquely at 45 °, the cross section of each reflecting unit is rectangular, and a reflecting film is disposed along the same side or two sides of the stacking direction of the reflecting units.

In some embodiments, the equivalent negative index optical element further comprises two transparent substrates, the first and second arrays of optical waveguides being disposed between the two transparent substrates.

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

Fig. 1 is a schematic structural view of a non-contact air purifier according to an embodiment of the present invention;

fig. 2 is a block diagram of a control system of a non-contact air purifier according to an embodiment of the first aspect of the present invention;

FIG. 3 is a schematic structural diagram of an optical display module according to a first embodiment of the present invention;

fig. 4 is a schematic structural diagram of a flat lens according to an embodiment of the present invention;

fig. 5 is a schematic diagram of a first optical waveguide array and a second optical waveguide array according to an embodiment of the present invention;

fig. 6 is a schematic front view of a flat lens according to an embodiment of the present invention in the thickness direction;

fig. 7 is a schematic partial structural view of a first optical waveguide array and a second optical waveguide array according to an embodiment of the present invention;

fig. 8 is a schematic optical path diagram of a flat lens according to an embodiment of the present invention;

fig. 9 is an internal optical path schematic diagram of a plate lens according to an embodiment of the present invention;

fig. 10 is a schematic imaging diagram of a flat lens according to an embodiment of the present invention;

reference numerals are as follows:

a non-contact air purifier 1000, a housing 200, a side wall 210, an air inlet 221, an air outlet 220,

the grill 230, the base 240, the cavity 250, the protector 251,

a filter 300, a driving module 400, a first fan 410, a second fan 420, a driving device 430,

the main control system 500, the optical display module 100,

an imaging module 20, a flat lens 1, a display 21, a mounting frame 22, a floating real image 25,

the detection module 30, the control module 40,

a first optical waveguide array 6, a second optical waveguide array 7, a transparent substrate 8,

a reflecting unit 9, a reflecting film 10 and an adhesive 11.

Detailed Description

Reference will now be made in detail to 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 function 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.

The following disclosure provides many different embodiments, or examples, for implementing different features of the invention. In order to simplify the disclosure of the present invention, the components and arrangements of specific examples are described below. Of course, they are merely examples and are not intended to limit the present invention. In addition, the present disclosure may repeat reference numerals and/or letters in the various examples. This repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed. In addition, the present disclosure provides examples of various specific processes and materials, but one of ordinary skill in the art may recognize the applicability of other processes and/or the use of other materials.

An embodiment of the utility model provides a non-contact air purifier 1000. A non-contact air purifier 1000 according to a first embodiment of the present invention is described below with reference to the accompanying drawings.

As shown in fig. 1 and fig. 2, according to the utility model discloses non-contact air purifier 1000 includes: the display module comprises a shell 200, a filter device 300 arranged in the shell 200, a driving module 400, a main control system 500 and an optical display module 100. The main control system 500 is electrically connected to the filtering device 300, the driving module 400 and the optical display module 100, and is used for controlling the operations of the above devices and modules.

The housing 200 includes four sidewalls 210 connected in sequence, a plurality of air inlets 211 are formed at the bottom end of each sidewall 210, and external air can enter the inside of the non-contact air purifier 1000 through the air inlets 211. The top of the housing 200 is opened with an opening, which is an air outlet 220 for air to pass through. The housing 200 is provided with a grill 230 at the outlet 220, and the grill 230 covers the outlet 220 to prevent external objects from entering the housing 200. It is understood that an air duct structure (not shown) is further disposed in the housing 200, and the air duct structure is used for communicating the air inlet 211 with the air outlet 220. In addition, the bottom of the housing 200 is provided with a plurality of bases 240 for supporting the housing 200.

Referring to fig. 3, a cavity 250 is further disposed in the housing 200, an opening is disposed on the cavity 250 near one of the sidewalls 210, and the optical display module 100 is accommodated in the cavity 250. The cavity 250 is provided with a light-transmissive protection member 251 at an opening position, the protection member 251 is flush with the surface of the sidewall 210, and the protection member 251 is used for protecting the optical display module 100 accommodated in the cavity 250. It can be understood that, by disposing the optical display module 100 in the cavity 250, the optical display module 100 no longer protrudes from the surface of the sidewall 210, and thus the optical display module is more visually attractive. Further, the sidewall 210 is provided with a fastening hole around the opening of the cavity 250, and a fastening hook matched with the fastening hole is provided on the outer wall of the optical display module 100. By utilizing the advantages of simple structure and easy assembly of the hooks and the clamping holes, the optical display module 100 is tightly connected with the side wall 210 through the matching of the hooks and the clamping holes.

The filtering device 300 is used for filtering air entering through the air inlet 211, and preferably, the filtering device 300 has a multi-layer filtering structure, so that multi-layer filtering layer materials can be switched according to requirements to filter air in different environments, and the application range is wider. In this embodiment, in order to achieve a better filtering effect, the filter device 300 corresponds to the air inlet 211, so that the air flowing into the housing 200 from the air inlet 211 enters the air duct structure after being filtered by the filter device 300. Of course, in other embodiments, the filter device 300 does not need to be right opposite to the air inlet 211, and the present invention is not limited thereto.

Referring to fig. 2, the driving module 400 includes a first fan 410, a second fan 420 and a driving device 430. In this embodiment, the first fan 410 is disposed near the inlet 211 to accelerate the air entering the inlet 211, and the second fan 420 is disposed near the outlet 220 to accelerate the air exiting the outlet 220. It is understood that the air duct structure located in the housing 200 is disposed between the first fan 410 and the second fan 420 to guide the air flowing between the inlet 211 and the outlet 220, that is, the first fan 410 is used for sucking the air from the inlet 211 into the housing 200 and flowing into the air duct structure, and the second fan 420 is used for discharging the filtered air from the outlet 220 out of the housing 200. The driving device 430 is used for driving the first fan 410 and the second fan 420 to rotate at the same speed or different speeds. The driving device 430 may be a motor, and the first fan 410 and the second fan 420 are controlled to rotate at the same speed by using one motor, or the driving device may be a motor and connected to the first fan 410 and the second fan 420 through different auxiliary connection media, so as to achieve the purpose of rotating at different speeds. Of course, the driving device 41 may also be two motors, and the two motors are correspondingly connected to the first fan 410 and the second fan 420, respectively, so that the rotation speed of the first fan 410 and the rotation speed of the second fan 420 can be controlled according to the requirement of purifying the environment, so as to adapt to the air purifying speed in a certain space. In addition, the driving means 430 is disposed in the housing 200, so that the space in the housing 200 is sufficiently utilized, and thus the volume of the non-contact air cleaner 1000 can be reduced.

The non-contact air purifier 1000 sucks air from the air inlet 211 through the close fit among the devices in the housing 200, filters the air by the filtering device 400, and then discharges the air from the air outlet 220, so as to purify the air in a certain range of activity space, thereby achieving the purpose of obtaining a healthy living environment.

Referring to fig. 2 and 3, the optical display module 100 includes an imaging module 20, a detecting module 30 and a control module 40. The imaging module 20 is used for displaying the image displayed by the optical display module 100 in the air in a floating real image 25 manner. The detection module 30 may detect the interaction of the user on the floating real image 25 to generate interaction information, and transfer the interaction information to the control module 40. The control module 40 determines the specific operation content of the user according to the internal instruction set and the interaction information, and generates a corresponding control signal to be sent to the main control system 500 of the non-contact air purifier 1000 to control the non-contact air purifier 1000 to complete various operations. Meanwhile, the control module 40 transmits the operation interface or the control result corresponding to the control signal to the imaging module 20, and displays an image in the air through the imaging module 20, so that the user can conveniently operate the next step or know the control result. It should be understood that the optical display module 100 also includes a driving circuit and an associated input/output interface for connecting the above systems, which are omitted from the drawings.

The imaging module 20 includes an equivalent negative refractive index optical element, a display 21, and a mounting frame 22. The equivalent negative refractive index optical element is accommodated in the cavity 250 and is tightly attached to the protection member 251. Display 21 holds at cavity 250 top, mounting bracket 22 holds at cavity 250 bottom, mounting bracket 22 one end and display 21 fixed connection are with display 21 fixed mounting in cavity 250. In an embodiment, the equivalent negative refractive index optical element may be a flat lens 1, and after light emitted from the display 21 passes through the flat lens 1, a floating real image 25 opposite to the display 21 is formed on the other side of the flat lens 1. The position of the floating real image 25 in the air is adjusted by changing the positions of the display 21 and the flat lens 1. The detection module 30 is used for detecting the operation of the user on the floating real image 25 and feeding back the detected interaction signal to the control module 40. The sensing area of the detection module 30 and the floating real image 25 are located on the same plane and include a three-dimensional space where the floating real image 25 is located, and when the device is installed, the best installation position can be selected according to the installation space, the viewing angle and the use environment, so that a user can conveniently operate the floating real image 25, and the sensitivity and the convenience of user operation are improved.

According to some embodiments of the present invention, the image pattern of the Display 21 may include RGB (red, green, blue) Light Emitting Diodes (LED), LCD (Liquid Crystal Display), LCOS (Liquid Crystal on Silicon) devices, OLED (Organic Light-Emitting Diode) array, projection, laser Diode, or any other suitable Display or stereoscopic Display, without limitation.

In the present embodiment, the luminance of the display 21 can be set to not lower than 500cd/m2, so that the influence caused by the luminance loss in the optical path propagation can be reduced. Of course, in practical applications, the display brightness of the display 21 may be adjusted according to the brightness of the ambient light.

Furthermore, according to the utility model discloses a some embodiments carry out visual angle control to the display image surface of display 21 and handle, can lighten the ghost of superficial empty real image 25, improve picture quality, also can prevent that other people from peeping to other input device that need privacy information protection of wide application.

According to the utility model discloses a some embodiments, detection module 30 can be far and near infrared sensor, ultrasonic sensor, laser interference sensor, grating sensor, encoder, optical fiber formula sensor or CCD sensor. That is, the sensing form of the detection module 3 includes, but is not limited to, far and near infrared, ultrasonic, laser interference, grating, encoder, fiber optic type or CCD (charge coupled device), etc.

According to the utility model discloses a some embodiments, control module 40 can adopt wired or wireless mode to be connected with imaging module 20, detection module 30, transmits digit or analog signal to can control optical display module assembly 100's volume in a flexible way, can strengthen optical display module assembly 100's electrical stability moreover.

When the user needs to use the non-contact air purifier 1000, the user may click an operation button in the floating real image 25, the detection module 30 detects the interaction operation of the user, and feeds back the interaction information to the control module 40, and the control module 40 determines the operation instruction of the user according to the internal instruction set and the interaction information. In an embodiment, the control module 40 determines that the user clicks the power-on operation button, and generates a corresponding control signal to send to the main control system 500. After receiving the control signal, the main control system 500 controls the driving module 400 to open. At this time, the driving device 430 controls the first fan 410 and the second fan 420 to rotate, so as to complete the start-up operation of the non-contact air purifier 1000. In another embodiment, the control module 40 determines that the wind speed increasing operation button is clicked by the user, so as to generate a corresponding control signal to be sent to the main control system 500. After receiving the control signal, the main control system 500 controls the driving module 400 to increase the operating power. At this time, the driving device 430 controls the first fan 410 and the second fan 420 to increase the rotation speed.

Through above operation, can reduce and control non-contact air purifier 1000's the degree of difficulty reduces risks such as the unexpected electric shock of user, and the security is higher, and the clean health of above non-contact operation simultaneously to avoid producing the risk of cross infection such as bacterium, virus because of user's touch non-contact air purifier 1000.

The structure and imaging principle of the plate lens of the present invention will be described with reference to fig. 4 to 10, and the details are as follows.

As shown in fig. 4 to 5, the equivalent negative refractive index optical element may employ a flat lens 1, the flat lens 1 including two transparent substrates 8, and a first optical waveguide array 6 and a second optical waveguide array 7 disposed between the two transparent substrates 8. The first optical waveguide array 6 and the second optical waveguide array 7 are closely attached to each other on the same plane and are orthogonally arranged. Preferably, the first optical waveguide array 6 and the second optical waveguide array 7 are the same thickness, which facilitates design and production. Specifically, as shown in fig. 4, the flat lens includes a first transparent substrate 8, a first optical waveguide array 6, a second optical waveguide array 7, and a second transparent substrate 8 in this order from the display 21 side to the floating real image 25 side.

Wherein the first transparent substrate 8 and the second transparent substrate 8 each have two optical surfaces, and the transparent substrate 8 has a transmittance of 90% to 100% for light having a wavelength of 390nm to 760 nm. The material of the transparent substrate 8 may be at least one of glass, plastic, polymer and acrylic for protecting the optical waveguide array and filtering out unwanted light. Note that, if the strength after the first optical waveguide array 6 and the second optical waveguide array 7 are bonded to each other in an orthogonal manner is sufficient, or if the thickness of the mounting environment is limited, only one transparent substrate 8 may be disposed, or no transparent substrate 8 may be disposed.

As shown in fig. 5, the first optical waveguide array 6 and the second optical waveguide array 7 are composed of a plurality of reflection units 9 having a rectangular cross section, and the lengths of the reflection units 9 are limited by the peripheral dimensions of the optical waveguide arrays so as to be different in length. The extending direction of the reflecting unit 9 in the first optical waveguide array 6 is X, the extending direction of the reflecting unit 9 in the second optical waveguide array 7 is Y, and the Z direction is the thickness direction of the optical waveguide array. The extending directions (optical waveguide array directions) of the reflecting units 9 in the first optical waveguide array 6 and the second optical waveguide array 7 are perpendicular to each other, namely, the first optical waveguide array 6 and the second optical waveguide array 7 are orthogonally arranged when viewed from the Z direction (thickness direction), so that two light beams in the orthogonal directions are converged at one point, and the object image planes (the light source side and the imaging side) are ensured to be symmetrical relative to a flat lens, an equivalent negative refraction phenomenon is generated, and aerial imaging is realized.

As shown in fig. 6, the first optical waveguide array 6 or the second optical waveguide array 7 is composed of a plurality of parallel arranged reflection units 9 obliquely arranged with a 45 ° deflection in the user's view angle. Specifically, the first optical waveguide array 6 may be composed of reflection units 9 arranged side by side at 45 ° in the lower left direction and having a rectangular cross section, the second optical waveguide array 7 may be composed of reflection units 9 arranged side by side at 45 ° in the lower right direction and having a rectangular cross section, and the arrangement directions of the reflection units 9 in the two optical waveguide arrays may be interchanged. For example, the extending direction of the reflection unit 9 in the first optical waveguide array 6 is Y, the extending direction of the reflection unit 9 in the second optical waveguide array 7 is X, the Z direction is the thickness direction of the optical waveguide array, and the first optical waveguide array 6 and the second optical waveguide array 7 are orthogonally arranged when viewed from the Z direction (thickness direction), so that two light beams in the orthogonal direction converge at one point, and the object image planes (light source side and image forming side) are ensured to be symmetrical with respect to the flat lens, thereby generating an equivalent negative refraction phenomenon and realizing aerial imaging. The optical waveguide material has an optical refractive index n1, in some embodiments, n1>1.4, for example, n1 is 1.5, 1.8, 2.0, and the like.

As shown in fig. 7, for the first optical waveguide array 6 and the second optical waveguide array 7, two interfaces exist between each reflection unit 9 and its adjacent reflection unit 9, and the interfaces are bonded by an adhesive 11 having a good light transmittance. Preferably, the adhesive 11 may be selected from a photosensitive adhesive or a thermosetting adhesive, and the thickness of the adhesive 13 is T1, and satisfies T1>0.001mm, for example, T1=0.002mm or T1=0.003mm or T1=0.0015mm, and the specific thickness may be set according to specific needs. And adhesives 11 are respectively arranged between the adjacent optical waveguide arrays in the flat lens 1 and between the optical waveguide arrays and the transparent substrate 8, so that the firmness is improved.

In some embodiments, the reflection unit 9 may have a rectangular cross section, and the reflection film 10 is provided along one side or both sides of the arrangement direction of the reflection unit 9. Specifically, in the arrangement direction of the optical waveguide array, two sides of each reflection unit 9 are plated with a reflection film 10, and the material of the reflection film 10 may be a metal material such as aluminum, silver, or other non-metal compound material that realizes total reflection. The function of the reflective film 10 is to prevent the light from entering the adjacent light waveguide array due to no total reflection to form stray light to affect the imaging. Alternatively, each reflection element 9 may be formed by adding a dielectric film to the reflection film 10, and the dielectric film may improve the light reflectance.

The cross section width a and the cross section length b of the single reflection unit 9 satisfy 0.1mm < a < 5mm, and 0.1mm < b < 5mm, and further satisfy 0.1mm < a < 2mm, and 0.1mm < b < 2mm, for better imaging effect. E.g., a =0.2mm, b =0.2 mm; alternatively, a =0.5mm, b =0.5 mm. When a large screen is displayed, the requirement of large size can be realized by splicing a plurality of optical waveguide arrays. The overall shape of the optical waveguide array is set according to the application scene, in this embodiment, the two groups of optical waveguide arrays are integrally rectangular, the two diagonal reflection units 9 are triangular, and the middle reflection unit 9 is a trapezoidal structure. The lengths of the single reflection units 9 are different, the reflection unit 9 positioned on the diagonal of the rectangle has the longest length, and the reflection units 9 at the two ends have the shortest length.

The principles of aerial imaging are explained below. On the micrometer scale, a mutually orthogonal double-layer waveguide array structure is used for orthogonal decomposition of arbitrary optical signals. The original signal is projected on the first optical waveguide array 6, a rectangular coordinate system is established by taking the projection point of the original signal as the origin and taking the projection point of the original signal as the X axis perpendicular to the first optical waveguide array 6, and the original signal is decomposed into two paths of mutually orthogonal signals of a signal X positioned on the X axis and a signal Y positioned on the Y axis in the rectangular coordinate system. When the signal X passes through the first optical waveguide array 6, the signal X is totally reflected on the surface of the reflective film 10 at a reflection angle equal to the incident angle; at this time, the signal Y remains parallel to the first optical waveguide array 6, and after passing through the first optical waveguide array 6, the signal Y is totally reflected on the surface of the reflective film 10 at the same reflection angle as the incident angle on the surface of the second optical waveguide array 7, and the reflected optical signal composed of the reflected signal Y and the signal X is mirror-symmetric to the original optical signal. Therefore, the light rays in any direction can realize mirror symmetry through the flat lens 1, the divergent light of any light source can be converged into a floating real image again at the symmetrical position through the flat lens 1, the imaging distance of the floating real image is the same as the distance from the flat lens 1 to an image source, namely a display 21, the floating real image is imaged at equal distance, and the floating real image is positioned in the air, does not need a specific carrier, and directly presents the real image in the air. Therefore, the image in the space seen by the user is the image emitted from the display 21.

In the embodiment of the present invention, when the light emitted from the light source of the display 21 passes through the plate lens 1, the above process occurs on the plate lens 1. Specifically, as shown in fig. 9, the incident angles of the light rays on the first optical waveguide array 6 are α 1, α 2, and α 3, respectively, the reflection angles of the light rays on the first optical waveguide array 6 are β 1, β 2, and β 3, where α 1= β 1, α 2= β 2, and α 3= β 3, the incident angles on the second optical waveguide array 7 after reflection by the first optical waveguide array 6 are γ 1, γ 2, and γ 3, respectively, and the reflection angles on the second optical waveguide array 7 are δ 1, δ 2, and δ 3, respectively, where γ 1= δ 1, γ 2= δ 2, and γ 3= δ 3.

Further, when the incident angles after the convergent imaging are α 1, α 2, and α 3 … α n, respectively, and the distance between the light source of the display 21 and the flat lens is L, the distance between the imaging position of the floating real image and the flat lens is also L, and the viewing angle ∈ of the floating real image is 2 times max (α).

It can be understood that if the size of the optical waveguide array is small, the image can be seen only at a certain distance from the imaging side of the optical waveguide array; if the size of the optical waveguide array is increased, a larger imaging distance can be realized, and thus the visual field rate is increased.

Preferably, the included angle between the flat lens 1 and the display 21 is set to be in the range of 45 ° ± 5 °, so that the size of the flat lens 1 can be effectively utilized, the imaging quality is improved, and the influence of afterimages is reduced. Furthermore, if there is another demand for the imaging position, another angle may be selected at the expense of the partial imaging quality, and the flat lens 1 is preferably sized to display the screen of the floating real image 25 presented by the entire display 21. However, if only a part of the display 21 needs to be seen in actual use, the size and position of the flat lens 1 can be freely adjusted according to the actual display, which is not limited.

In addition, the principle of imaging with the slab lens 1 adopting the double-layer optical waveguide array structure is mainly described above, but in other embodiments, if the plurality of cubic columnar reflection units 9 with the reflection films 12 are provided on all four peripheral surfaces, and the plurality of cubic columnar reflection units 9 are arranged in an array in the X and Y directions in the one-layer optical waveguide array structure, that is, the two layers of optical waveguide arrays are combined into one layer, the imaging principle of the slab lens 1 may also be the same as that of the double-layer optical waveguide array structure.

In the embodiment, the thicknesses of the first optical waveguide array 6 and the second optical waveguide array 7 are the same, so that the complexity of the structures of the first optical waveguide array 6 and the second optical waveguide array 7 can be simplified, the manufacturing difficulty of the first optical waveguide array 6 and the second optical waveguide array 7 can be reduced, the production efficiency of the first optical waveguide array 6 and the second optical waveguide array 7 can be improved, and the production cost of the first optical waveguide array 6 and the second optical waveguide array 7 can be reduced. It should be noted that the thickness is the same in a relative range, and is not absolutely the same, that is, for the purpose of improving the production efficiency, a certain thickness difference may exist between the optical waveguide arrays without affecting the aerial imaging quality.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., 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 invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

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

1. A non-contact air purifier, comprising:

the air conditioner comprises a shell, wherein the shell is provided with a plurality of air inlets, air outlets and an air channel structure, and the air channel structure is communicated with the air inlets and the air outlets;

the driving module is used for enabling air to enter the air duct structure from the air inlet and to be discharged from the air outlet;

the master control system is connected with the driving module and is used for controlling the driving module to operate;

the optical display module assembly, the optical display module assembly holding is in link to each other with major control system in the casing, the optical display module assembly includes: the device comprises an imaging module, a detection module and a control module, wherein the imaging module is used for forming a floating real image in the air, the detection module is used for detecting the operation of a user on the floating real image and feeding back a detected interaction signal to the control module, the control module generates a corresponding control signal according to the interaction signal and sends the control signal to a master control system, and the master control system controls the operation of the driving module according to the control signal.

2. The non-contact air purifier of claim 1 further comprising a filter device disposed within the housing, the filter device to filter air entering the air channel structure.

3. The non-contact air purifier of claim 1 wherein the housing comprises a plurality of sidewalls, one of the sidewalls having a cavity, the optical display module being received in the cavity.

4. The contactless air purifier of claim 3, wherein the housing is provided with a protector at the cavity, the protector being flush with the sidewall surface, the protector being configured to protect an optical display module received in the cavity.

5. The non-contact air purifier of claim 3, wherein the side wall is provided with a clamping hole around the opening of the cavity, the outer wall of the optical display module is provided with a clamping hook matched with the clamping hole, and the optical display module is tightly connected with the side wall through the matching of the clamping hook and the clamping hole.

6. The non-contact air purifier of claim 1, wherein the driving module comprises a first fan and a second fan, the first fan is disposed near the air inlet to accelerate the air into the air inlet, and the second fan is disposed near the air outlet to accelerate the air out of the air outlet.

7. The non-contact air purifier of claim 1, wherein the imaging module comprises an equivalent negative refractive index optical element and a display, the display is disposed on one side of the equivalent negative refractive index optical element, and after light emitted by the display passes through the equivalent negative refractive index optical element, a floating real image opposite to the display is formed on the other side of the equivalent negative refractive index optical element.

8. The non-contact air purifier of claim 7 wherein the equivalent negative index optical element comprises: the optical waveguide array comprises a first optical waveguide array and a second optical waveguide array, wherein the first optical waveguide array and the second optical waveguide array are tightly attached to each other on the same plane and are arranged orthogonally.

9. The non-contact air cleaner according to claim 8, wherein the first optical waveguide array or the second optical waveguide array is composed of a plurality of reflection units arranged in parallel and obliquely at 45 °, the reflection units having a rectangular cross section, and reflection films are provided along the same side or both sides in the stacking direction of the reflection units.

10. The contactless air purifier of claim 8, wherein the equivalent negative index optical element further comprises two transparent substrates, the first optical waveguide array and the second optical waveguide array being disposed between the two transparent substrates.