CN113251741A

CN113251741A - Control panel and refrigerator

Info

Publication number: CN113251741A
Application number: CN202110692176.8A
Authority: CN
Inventors: 宗魁; 刘辉
Original assignee: Anhui Dongchao Technology Co ltd
Current assignee: Anhui Dongchao Technology Co ltd
Priority date: 2021-06-22
Filing date: 2021-06-22
Publication date: 2021-08-13

Abstract

The invention discloses a control panel, wherein a cavity is arranged on the control panel, the control panel also comprises an optical display module which is accommodated in the cavity, and the optical display module comprises: the device comprises an imaging module, a detection module and a control module, wherein the imaging module is used for displaying a touch interface in the air in a floating real image mode, 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, and the control module generates a corresponding control signal according to the interaction signal. The invention also provides a refrigerator, which comprises a main control system and an operation panel, wherein the main control system is used for controlling the refrigerator to operate, the operation panel can send a control signal to the main control system, and the main control system can control the refrigerator to operate according to the control signal. According to the control panel and the refrigerator provided by the invention, the difficulty in controlling the refrigerator can be reduced, and meanwhile, the non-contact operation is cleaner and more sanitary.

Description

Control panel and refrigerator

Technical Field

The invention relates to the technical field of refrigeration equipment, in particular to an operation panel and a refrigerator.

Background

In the prior art, in order to increase the intelligence and the controllability of the refrigerator, the refrigerator is generally provided with a control panel to display information of the refrigerator, and a user can touch a button on the control panel to adjust the temperature of a refrigerating chamber or a freezing chamber of the refrigerator. However, for technical reasons, most of the control panels use a nixie tube as a display screen, and the operation function is realized by using the working principle of capacitance change feedback. In addition, in order to protect the operation panel and to make the appearance beautiful, the operation panel and the refrigerator panel are installed on the same plane, which requires that the installation height of the operation panel is adapted to the height of the user, thereby limiting the installation position of the operation panel. In addition, the frequent operation of the operation panel can cause certain abrasion and pollution to the operation panel, and oil stain residues can be remained on the surface of the operation panel, so that the operation panel is not clean and sanitary during contact operation.

Disclosure of Invention

The invention provides an operation panel and a refrigerator with the same.

The invention provides a control panel, which is used for being installed on a refrigerator, a cavity is arranged on the control panel, the control panel also comprises an optical display module which is accommodated in the cavity, and the optical display module comprises: the device comprises an imaging module, a detection module and a control module, wherein the imaging module is used for displaying a touch interface in the air in a floating real image mode, 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, and the control module generates a corresponding control signal according to the interaction signal.

In some embodiments, the control panel is provided with a protection member at the cavity, the protection member is flush with the surface of the control panel, and the protection member is used for protecting an optical display module received in the cavity.

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 imaging module further comprises a mounting bracket, one end of the mounting bracket is fixedly connected with one end of the display and fixedly mounts the display in the cavity.

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.

In some embodiments, an adhesive is disposed between the first optical waveguide array and the second optical waveguide array, between the first optical waveguide array and the adjacent transparent substrate, and between the second optical waveguide array and the adjacent transparent substrate.

In some embodiments, the sensing area of the detection module and the floating real image are located on the same plane and include a three-dimensional space where the floating real image is located.

In some embodiments, the control module includes a control main board and a fixing member, and the fixing member is used for mounting the control main board on the control panel.

The invention also provides a refrigerator which comprises a refrigerator body provided with the storage compartment, a door body arranged on the refrigerator body and a main control system used for controlling the refrigerator to operate, and the refrigerator also comprises the control panel in the embodiment, wherein the control panel can send a control signal to the main control system, and the main control system can control the refrigerator to operate according to the control signal.

In some embodiments, the refrigerator further comprises a human sensing module connected with the main control system, the human sensing module senses a human signal and then sends the human signal to the main control system, and the main control system receives the human signal and then controls the optical display module to be opened.

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 refrigerator according to an embodiment of the present invention;

fig. 2 is a block diagram of a control system of a refrigerator according to an embodiment of the present invention;

fig. 3 is a schematic structural diagram of a control panel according to an embodiment of the present invention;

FIG. 4 is a schematic structural diagram of an optical display module according to an embodiment of the present invention;

FIG. 5 is a schematic structural diagram of a plate lens according to an embodiment of the present invention;

FIG. 6 is a schematic diagram of a first optical waveguide array and a second optical waveguide array in an embodiment in accordance with the invention;

fig. 7 is a schematic front view of a plate lens in a thickness direction according to an embodiment of the present invention;

FIG. 8 is a schematic diagram of a partial structure of a first optical waveguide array and a second optical waveguide array in an embodiment in accordance with the invention;

FIG. 9 is a schematic diagram of an optical path of a flat lens according to an embodiment of the present invention;

fig. 10 is an internal optical path schematic diagram of a flat lens in an embodiment in accordance with the invention;

FIG. 11 is a schematic imaging diagram of a flat lens in an embodiment in accordance with the invention;

reference numerals:

refrigerator 1000, cabinet 200, door 300, control panel 400, cavity 450, protection element 451, main control system 500,

the optical display module 100 is provided with a plurality of optical elements,

an imaging module 20, a display 21, a mounting frame 22, a floating real image 25, a detection module 30, a control module 40, a control main board 41, a fixing piece 42,

a flat lens 1, a first optical waveguide array 6, a second optical waveguide array 7, a transparent substrate 8,

a reflection unit 9, a reflection 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 or similar 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 illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.

The following disclosure provides many different embodiments, or examples, for implementing different features of the invention. 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. Furthermore, the present invention 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 invention 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.

A first embodiment of the invention provides a refrigerator 1000. A refrigerator 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 2, a refrigerator 1000 according to an embodiment of the present invention includes: the touch screen comprises a box body 200, at least one door body 300 arranged on the box body 200, an operation panel 400, a main control system 500 and an optical display module 100 for displaying a touch interface.

Wherein, a plurality of storage compartments are arranged in the box body 200, and the door body 300 is opened to put food into or take food out of the storage compartments. A human sensing module (not shown) is further installed at the top end of the door body 200, and the human sensing module is used for detecting whether a human signal is present at the front end of the refrigerator 1000. The control panel 400 is fixedly mounted on one of the door bodies 300, preferably, the shape of the control panel 400 is adapted to the door body 300, and the control panel 400 can receive an operation signal of a user clicking a touch interface and send a control signal to the main control system 500 through the optical display module 100. The main control system 500 can receive the control signal and control the refrigerator 1000 to perform various operations according to the control signal.

Further, when the human body sensing module detects a human body signal at the front end of the refrigerator, the human body sensing module sends a signal to the main control system 500, and the main control system 500 controls the optical display module 100 in the control panel 400 to be opened to form a touch interface in the air, so that the operation of a user is facilitated. When the human body sensing module detects that no human body signal is present at the front end of the refrigerator 1000, a signal is sent to the main control system 500, and the main control system 300 controls the optical display module 100 to be closed, so that the purpose of saving electricity is achieved. In an embodiment, the human sensing module can use an image recognition technology, an infrared sensing technology and a voice recognition technology to realize a function of sensing human body signals through a camera, an infrared sensor, a sound sensor and other devices.

In some embodiments of the present invention, the optical display module 100 may be disposed on the control panel 400 at a position convenient for a user to control. There are various connection manners of the optical display module 100 and the control panel 400, including a direct connection manner or an indirect connection manner. For example, the optical display module 100 may be adhered to the control panel 400 by an adhesive, and for example, the optical display module may be embedded in the control panel 400, and for example, a spacer may be disposed between the optical display module 100 and the control panel 400, that is, the optical display module 100 is installed on the spacer, and the spacer is installed on the control panel 400, so that the optical display module 100 and the spacer may be installed first, and then the spacer and the control panel 400 are installed, thereby ensuring the installation reliability of the optical display module 100.

Referring to fig. 1 and fig. 3, in the present embodiment, a cavity 450 is disposed on the front surface of the control panel 400, and the optical display module 100 is accommodated in the cavity 450. The cavity 450 is provided with a light-transmissive protection member 451 at an opening position, the protection member 451 is flush with the surface of the control panel 400, and the protection member 451 is used for protecting the optical display module 100 accommodated in the cavity 450. It can be understood that, by disposing the optical display module 100 in the cavity 450, the optical display module 100 no longer protrudes from the surface of the control panel 400, and is more visually attractive. Further, a fastening hole is formed on the inner wall of the cavity 450, and a fastening hook matched with the fastening hole is formed on the outer wall of the optical display module 100. By using the advantages of simple structure and easy assembly of the hook and the hole, the tight connection between the optical display module 100 and the control panel 400 is realized through the cooperation of the hook and the hole.

Referring to fig. 2 to 4, the optical display module 100 includes an imaging module 20, a detecting module 30 and a control module 40. The imaging module 20 is configured to display the touch interface of the control panel 400 in the air by floating the real image 25 on the screen displayed by the optical display module 100. The detection module 30 may detect an interaction operation of a user on the touch interface to generate interaction information, and transmit 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 refrigerator 1000 to control the refrigerator 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 is 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.

As shown in fig. 3 and 4, the imaging module 20 includes an equivalent negative refractive index optical element, a display 21, and a mount 22. The equivalent negative refractive index optical element is accommodated in the cavity 450 and is tightly attached to the protective member 451. The display 21 is accommodated at the top end of the cavity 450, the mounting bracket 22 is accommodated at the bottom end of the cavity 450, and one end of the mounting bracket 22 is fixedly connected with the display 21 so as to fixedly mount the display 21 in the cavity 450. 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 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. The control module 40 includes a control main board 41 and a fixing member 42, wherein the fixing member 42 is used for mounting the control main board 41 on the back of the control panel 400.

The structure and imaging principle of the flat lens according to the present invention will be described with reference to fig. 5 to 11, which will be described in detail below.

As shown in fig. 5 to 6, 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 interposed 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. 5, 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 excessive 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. 6, 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. 7, 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 being deflected by 45 ° at the user viewing 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. 8, 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 T1>0.001mm is satisfied, 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 reflecting film 10 is used for preventing light rays from entering an adjacent optical waveguide array due to no total reflection to form stray light to influence 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, 0.1mm ≤ b ≤ 5mm, and further satisfy 0.1mm ≤ a ≤ 2mm, and 0.1mm ≤ b ≤ 2mm for better imaging effect. For example, a is 0.2mm, b is 0.2 mm; alternatively, a is 0.5mm and b is 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. In addition, the flat lens 1 may further include an anti-reflection component and a viewing angle control component, and the anti-reflection component may improve the overall transmittance of the flat lens and improve the definition and brightness of the floating real image 25. The visual angle control part can be used for eliminating the afterimage of the floating real image 25, reducing the vertigo of an observer, preventing the observer from peeping into the device from other angles, and improving the overall attractiveness of the device. The anti-reflection component and the viewing angle control component may be combined, or may be separately disposed between the transparent substrate 8 and the waveguide array, between two waveguide arrays, or on the outer layer of the transparent substrate 8.

Specifically, the aerial imaging principle of the present invention is as follows:

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 the floating real image 25 again at the symmetrical position through the flat lens 1, the imaging distance of the floating real image 25 is the same as the distance from the flat lens 1 to the image source, namely the display 21, the floating real image 25 is imaged at equal distance, and the floating real image 25 is positioned in the air, does not need a specific carrier, and directly presents a 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, the light emitted from the light source of the display 21 passes through the flat lens 1, and the above process occurs on the flat lens 1. Specifically, as shown in fig. 10, the incident angles of the light rays on the first optical waveguide arrays 6 are α, respectively₁、α₂And alpha₃The reflection angle of the light on the first optical waveguide array 6 is beta₁、β₂And beta₃In which α is₁＝β₁，α₂＝β₂，α₃＝β₃After being reflected by the first optical waveguide array 6, the incident angles on the second optical waveguide array 7 are respectively gamma₁、γ₂And gamma₃The reflection angles at the second optical waveguide arrays 7 are respectively δ₁、δ₂And delta₃Wherein γ is₁＝δ₁，γ₂＝δ₂，γ₃＝δ₃。

Further, focusing the imaged imageEach angle of incidence is alpha₁，α₂，α₃…α_nWhen the distance between the light source of the display 21 and the flat lens 1 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 25 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.

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

In an embodiment, the luminance of the display 21 may be set to not less than 500cd/m²Thereby reducing the effect of brightness loss in the optical path propagation. Of course, in practical applications, the display brightness of the display 21 may be adjusted according to the brightness of the ambient light.

In addition, according to some embodiments of the present invention, the visible angle control processing is performed on the display image surface of the display 21, so that the ghost of the floating real image 25 can be reduced, the image quality can be improved, and the peeping of others can be prevented, thereby being widely applied to other input devices requiring privacy information protection.

According to some embodiments of the present invention, the detection module 30 may be a far-near infrared sensor, an ultrasonic sensor, a laser interference sensor, a grating sensor, an encoder, a fiber optic sensor, or a 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 some embodiments of the present invention, the control module 40, the imaging module 20, and the detection module 30 may be connected in a wired or wireless manner to transmit digital or analog signals, so as to flexibly control the volume of the optical display module 100 and enhance the stability of the optical display module 100.

In the refrigerator 1000 provided by the embodiment of the present invention, the control panel 400 installed thereon forms the floating real image 25 at the determined position of the display image in the air by the interactive aerial imaging technology, and a user can perform an operation according to the image information in the floating real image 25, so as to complete the operation purpose of the user on the refrigerator 1000. This refrigerator 1000 can make user's operation mode more convenient directly perceived, contacts the refrigerator body when avoiding user's operation to reduce the unexpected risk such as electrocute of user, the security is higher, and contactless operation is cleaner health simultaneously, and avoids causing the pollution because of the user touches refrigerator 1000 and to the refrigerator 1000 surface.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, 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 meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

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 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. The utility model provides a control panel for install on a refrigerator, its characterized in that, be equipped with a cavity on controlling the panel, control the panel still include one holding in the optical display module assembly in the cavity, 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 displaying a touch interface in the air in a floating real image mode, 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, and the control module generates a corresponding control signal according to the interaction signal.

2. The control panel as claimed in claim 1, wherein the control panel is provided with a protection member at the cavity, the protection member is flush with the surface of the control panel, and the protection member is used for protecting the optical display module received in the cavity.

3. The control panel according to claim 1, wherein 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 the light emitted from 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.

4. The control panel of claim 3, wherein the imaging module further comprises a mounting bracket, one end of the mounting bracket being fixedly connected to one end of the display and fixedly mounting the display in the cavity.

5. The manipulation panel of claim 3 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.

6. The manipulation panel according to claim 5, wherein the first optical waveguide array or the second optical waveguide array is composed of a plurality of parallel-arranged reflection units arranged obliquely at 45 °, the reflection units having a rectangular cross section, and reflection films are provided along the same side or both sides of the lamination direction of the reflection units.

7. The manipulation panel of claim 6 wherein 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.

8. The manipulation panel of claim 7 wherein an adhesive is disposed between the first array of optical waveguides and the second array of optical waveguides, between the first array of optical waveguides and the adjacent transparent substrate, and between the second array of optical waveguides and the adjacent transparent substrate.

9. The control panel according to claim 1, wherein the sensing area of the detection module is located on the same plane as the floating real image and includes a three-dimensional space where the floating real image is located.

10. The control panel of claim 1, wherein the control module comprises a control main board and a fixing member, and the fixing member is used for mounting the control main board on the control panel.

11. A refrigerator comprises a refrigerator body provided with a storage compartment, a door body arranged on the refrigerator body and a main control system used for controlling the refrigerator to operate, and is characterized in that the refrigerator further comprises an operation panel according to any one of claims 1 to 10, the operation panel can send a control signal to the main control system, and the main control system can control the refrigerator to operate according to the control signal.

12. The refrigerator according to claim 11, further comprising a human sensing module connected to the main control system, wherein the human sensing module senses a human signal and transmits the human signal to the main control system, and the main control system receives the human signal and controls the optical display module to be turned on.