CN113419354A - Aerial imaging device and adjusting method thereof - Google Patents
Aerial imaging device and adjusting method thereof Download PDFInfo
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Abstract
The invention discloses aerial imaging equipment, which comprises an optical display module, a camera module and a control module, wherein the optical display module is used for presenting an interactive floating real image in the air; the measuring module is used for acquiring the position information of a user; the main control module generates an adjusting signal according to the position information of the user; and the adjusting module is electrically connected with the main control module and is used for adjusting the posture of the aerial imaging equipment according to the adjusting signal so as to adjust the imaging visual angle of the floating real image presented by the optical display module. According to the aerial imaging equipment and the aerial imaging method, the attitude of the aerial imaging equipment can be adjusted in a self-adaptive mode according to the position information of the user, the imaging angle of the aerial imaging equipment is further adjusted, the imaging angle is made to be adaptive to the position and the visual angle of the user, the user can see the aerial real image clearly at any position and any visual angle, and therefore the use requirements of different users can be met, the applicability of the aerial imaging equipment is improved, and the user experience is improved.
Description
Technical Field
The invention relates to the technical field of aerial imaging display, in particular to aerial imaging equipment and an adjusting method thereof.
Background
At present, aerial imaging equipment, such as aerial imaging prompters, aerial imaging medical self-service machines and the like, are applied to various aspects in life, and bring high-quality life experience to users.
However, the current aerial imaging device generally has the problem of visibility angle, namely, a user needs to see a floating real image formed by the aerial imaging device at a certain angle. For different users, due to the fact that the heights, the positions and the like of the users are different, the imaging angle of the aerial imaging device is fixed, the users need to actively find the proper position and the proper visual angle to see the clear aerial real image, user experience is poor, some users cannot see the clear aerial real image even, the applicability of the aerial imaging device is low, and the use requirements of different users cannot be met.
Disclosure of Invention
Therefore, an object of the present invention is to provide an aerial imaging device, which can perform adaptive adjustment according to user position information, and further adjust an imaging angle, so that the imaging angle is adapted to the position and the viewing angle of a user, and the user can clearly see an aerial real image at any position and any viewing angle, thereby satisfying the use requirements of different users, improving the applicability of the aerial imaging device, and improving the user experience.
To this end, a second object of the present invention is to propose an imaging adjustment method of an aerial imaging device.
The embodiment of the first aspect of the invention provides aerial imaging equipment, which comprises an optical display module, a display module and a control module, wherein the optical display module is used for presenting an interactive floating real image in the air; the measuring module is used for acquiring the position information of a user; the main control module generates an adjusting signal according to the position information of the user; and the adjusting module is electrically connected with the main control module and is used for adjusting the posture of the aerial imaging equipment according to the adjusting signal so as to adjust the imaging visual angle of the floating real image of the optical display module.
In some embodiments, the aerial imaging device further comprises a main body comprising a base and a housing slidably mounted on the base, the measurement module and the optical display module being mounted on the housing.
In some embodiments, the housing includes a receiving portion and a bracket fixed to the receiving portion, the measuring module includes a first measuring device and a second measuring device, the first measuring device is fixed to a front end of the receiving portion, and the second measuring device is fixed to the bracket.
In some embodiments, the position information of the user includes distance information and height information, the first measuring device is configured to measure the distance information between the user and the aerial imaging device, and the second measuring device is configured to measure the height information of the user.
In some embodiments, the base includes a fixing plate, and the adjusting module includes a height adjusting device fixed on the fixing plate and abutting against the housing, and the height adjusting device can push the housing to slide up and down to adjust the height of the optical display module.
In some embodiments, the housing includes a support plate, and the adjustment module includes an angle adjustment device fixed to the support plate and abutting against the optical display module, the angle adjustment device being capable of rotating the optical display module.
In some embodiments, 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 presenting a floating real image, 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 and sends the control signal to the main control module.
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.
The embodiment of the second aspect of the invention provides an imaging adjusting method for an aerial imaging device, which comprises the following steps: acquiring position information of a user; determining an imaging adjustment angle of aerial imaging equipment according to the position information of the user; and according to the imaging adjusting angle, carrying out posture adjustment on the aerial imaging equipment so as to adjust the imaging visual angle of the aerial imaging equipment.
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 diagram of an aerial imaging device in an embodiment in accordance with the invention;
FIG. 2 is a further schematic structural diagram of an aerial imaging device in an embodiment in accordance with the invention;
FIG. 3 is a schematic structural view of another schematic structural view of an aerial imaging device in an embodiment in accordance with the invention;
FIG. 4 is a block diagram of a control system for an aerial imaging device in an embodiment in accordance with the 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;
fig. 12 is a flowchart of an imaging adjustment method of an aerial imaging device in an embodiment in accordance with the invention.
Reference numerals:
an aerial imaging device 1000, an optical display module 100, a main body 200, a measurement module 300, a main control module 400, a conditioning module 500,
the first measuring device 310, the second measuring device 320,
a height adjusting device 510, a motor 511, a push rod 512, an angle adjusting device 520, an expansion link 521,
the optical waveguide array comprises a flat lens 1, a floating real image 25, 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 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.
An embodiment of the first aspect of the present invention provides an aerial imaging device 1000. An aerial imaging device 1000 according to an embodiment of the invention is described below with reference to the drawings.
Referring to fig. 1 to 4, an aerial imaging apparatus 1000 according to an embodiment of the present invention includes: the main body 200, the measurement module 300, the main control module 400, the adjustment module 500 and the optical display module 100. The aerial imaging device 1000 can present the interactive floating real image 25 in the air through the optical display module 100, and a user can directly interact with the floating real image 25.
The main body 200 includes a base 210 and a housing 220 slidably mounted on the base 210. The base 210 includes a plurality of columns 211 and a fixing plate 212. Each upright 211 is parallel to each other and has a guide rail (not shown) at its upper end. The housing 220 may be mounted on rails and may slide along the upright 211. In this embodiment, the number of the vertical columns 211 is 4. The fixing plate 212 is fixed around the vertical column 211 and is substantially horizontal. The housing 220 has a receiving portion 221, the receiving portion 221 has a cavity 222, and the optical display module 100 is received in the cavity 222. The bottom end of the housing 200 is further provided with a support plate 223, and the adjusting module 500 can abut against the support plate 223. The housing 220 further includes a bracket 225 fixed to the receiving portion 221, and the measuring module 300 is fixed to the bracket 225.
The measurement module 300 is configured to obtain position information of a user, and send the position information of the user to the main control module 400, and the main control module 400 receives the position information of the user and then generates an adjustment signal in combination with the current imaging angle of view of the optical display module 100, and controls the operation of the adjustment module 500 according to the adjustment signal to adjust the posture of the aerial imaging device 1000. It can be understood that the heights of different users are different, and the corresponding viewing angles of the users looking at the same position are different. If the imaging angle of view of the aerial imaging device 1000 is fixed, for example, for a certain set height, the clear floating real image 25 can be seen by the user corresponding to the set height, and when the user of other heights sees the floating real image, the clear floating real image 25 cannot be seen because the user angle of view is not matched with the imaging angle of view. On the other hand, the distance between the user and the aerial imaging device 1000 also affects the viewing angle from which the user views the floating real image 25. For example, a user may not be able to see a clear floating real image 25 when the user is far or near the aerial imaging device 1000.
Therefore, in the embodiment of the present invention, the measuring module 300 is configured to obtain the position information of the user, which at least includes the distance information between the user and the aerial imaging device 1000 and the height information of the user, and adjust the imaging angle of view of the aerial imaging device 1000 by using the above information as an adjusting factor, so that different users can see clear floating real images 25 at any position, thereby meeting the use requirements of different users.
In one embodiment, in order to more accurately obtain the position information of the user, the measuring module 300 includes a first measuring device 310 and a second measuring device 320, the first measuring device 310 is installed at the front end of the accommodating portion 221, and the second measuring device 320 is installed on the bracket 225. The first measurement device 310 and the second measurement device 320 may acquire the position information of the user through one or more combinations of image acquisition, voice recognition, infrared detection, temperature detection, and/or ultrasonic detection.
Specifically, the first measuring device 310 may determine the distance information by using an infrared detection method, which includes an infrared sensor and a corresponding processing unit. The second measuring device 320 may determine the height information of the user by using an image collecting method, and includes a camera and a corresponding image processing unit, and the camera may collect the image of the user. For example, when the user is located within a preset area where the floating real image 25 can be viewed, the camera captures images of the user, including a whole-body image of the front of the user and/or an image of the face of the user. The image processing unit acquires the acquired user image, and processes and analyzes the user image, such as recognizing human body characteristics, human face characteristics and/or eyeball characteristics and the like in the user image, so as to determine the height information of the user.
The measurement module 300 acquires the distance information and the height information through the first measurement device 310 and the second measurement device 320 respectively, so that the accuracy of acquiring the position information of the user is improved, meanwhile, the diversity and the reliability of the position information acquisition mode of the user are improved, and the expandability and the applicability of the measurement module 300 are improved.
It is understood that the installation positions of the first measuring device 310 and the second measuring device 320 in the present invention may be interchanged, and the manner of acquiring the position information of the user may also be interchanged. The present invention will not be described herein.
The adjusting module 500 is electrically connected to the main control module 400 and can adjust the posture of the aerial imaging device 1000 after receiving an adjusting signal sent by the main control module 400 so as to change the imaging angle of view of the floating real image 25. In one embodiment, for better adjusting the attitude of the aerial imaging device 1000, the adjusting module 500 includes a height adjusting device 510 and an angle adjusting device 520.
The height adjusting device 510 is fixedly installed on the fixing plate 212, the height adjusting device 510 includes a motor 511 and a push rod 512, the top end of the push rod 512 abuts against the bottom of the supporting plate 223, the motor 511 can drive the push rod 512 to move up and down, and the push rod 512 pushes the supporting plate 223 to move up and down when moving up and down, so as to drive the shell 220 to ascend or descend along the guide rail. It is understood that the push rod 512 may be disposed to abut against a central position of the bottom of the support plate 223 in order to smoothly push the housing 220 up or down.
The angle adjusting device 520 is fixedly installed on the supporting plate 223, and the angle adjusting device 520 includes an expansion link 521. The top end of the telescopic rod 521 abuts against the optical display module 100, and the telescopic rod 521 can move up and down to rotate the optical display module 100.
Referring to fig. 1 to 4, the optical display module 100 includes an imaging module 20, a detecting module 30, a control module 40, and a housing 50. 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 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, generates a corresponding control signal, and sends the control signal to the main control module 400 of the aerial imaging device 1000 to control the aerial imaging device 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. The housing 50 is received in the receiving portion 211, and two ends of the housing 50 are respectively provided with a rotating shaft, and the rotating shafts are respectively inserted into the rotating holes of two inner walls of the receiving portion 211, so that the optical display module 100 is rotatably mounted in the receiving portion 211. The telescopic rod 521 of the angle adjusting device 520 abuts against the housing 50 to rotate the optical display module 100.
The imaging module 20 includes an equivalent negative refractive optical element, which may be a flat lens 1, and a display (not shown). After light emitted by the display passes through the flat lens 1, a floating real image 25 opposite to the display 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. In various embodiments, the control module 40 may be integrated directly with the display or the control module 40 may be integrated with the detection module 30. The control instruction content of the control module 40 can also be transmitted to other external devices for processing or controlling the other external devices. 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.
In one example, the measurement module 300 obtains location information of the user while the user is standing in front of the aerial imaging device 1000. Specifically, the first measuring device 310 may determine the distance information by an infrared detection method, and the second measuring device 320 may determine the height information of the user by an image acquisition method. The measurement module 300 acquires the position information of the user according to the distance information and the height information and sends the position information to the main control module 400, the main control module 400 generates an adjusting signal by combining the current imaging visual angle of the optical display module 100 after receiving the position information, and controls the operation of the adjusting module 500 according to the adjusting signal to adjust the posture of the aerial imaging device 1000. In a specific embodiment, the main control module 400 can control the push rod 512 of the height adjustment device 510 to push the support plate 223 to move up and down to drive the entire housing 220 to slide on the guide rail, so as to adjust the height of the optical display module 100; on the other hand, the telescopic rod 521 of the angle adjusting device 520 can be controlled to move up and down to rotate the housing 50, so as to adjust the angle of the optical display module 100. At this time, the floating real image 25 formed in the air by the optical display module 100 is also adjusted. Therefore, the aerial imaging device of the invention adjusts the height and angle of the optical display module 100 through the adjusting module 500 to adjust the imaging angle of the optical display module 100, so that the user can observe the floating real image 25 at an optimal angle.
The structure and imaging principle of the flat lens 1 according to the present invention will be described below with reference to fig. 5 to 11, and the details will be as follows.
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: 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, 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 sent by the display.
In the embodiment of the present invention, the above process occurs on the flat lens 1 when the light emitted from the display light source passes through 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, the incident angles after the convergent imaging are respectively alpha1，α2，α3…αnWhen the distance between the light source of the display 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 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. In addition, if there is other demand for the imaging position, other angles may be selected at the expense of partial imaging quality, and the flat lens 1 is preferably sized to display a picture of the floating real image 25 presented by the entire display. 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 this respect.
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 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) array, projection, laser Diode, or any other suitable Display or stereoscopic Display, without limitation.
In an embodiment, the luminance of the display 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, 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.
The embodiment of the second aspect of the invention provides an imaging adjusting method for an aerial imaging device. As shown in fig. 12, the imaging adjustment method for aerial imaging equipment includes the following steps:
step S1: location information of a user is acquired.
Specifically, the position information of the user includes at least information such as distance information between the user and the aerial imaging device and height information of the user. It can be understood that the heights of different users are different, and the corresponding viewing angles of the users looking at the same position are different. If the imaging visual angle of the aerial imaging device is fixed, for example, the imaging visual angle is corresponding to a certain set height, a user corresponding to the set height can see a clear floating real image, and when users with other heights see the floating real image, the users with other heights cannot see the clear floating real image due to the fact that the user visual angle is not matched with the imaging visual angle. On the other hand, the distance between the user and the aerial imaging device also affects the viewing angle of the user for observing the floating real image, namely, whether the user can see a clear floating real image or not. Therefore, in the embodiment of the present invention, the position information of the user at least includes the distance information of the user and the height information of the user.
Step S2: and determining an imaging adjusting angle of the aerial imaging device according to the position information of the user.
Specifically, from the acquired user position information, the relative position and height, etc., of the user with respect to the aerial imaging apparatus can be analyzed. According to the information, the front visual angle of the aerial imaging device seen by the user can be determined, and the imaging adjusting angle of the aerial imaging device can be obtained according to the front visual angle and by combining the current imaging visual angle of the aerial imaging device. It can be understood that on the basis of the current imaging visual angle, the current imaging visual angle is adjusted according to the imaging adjustment angle, so that the final imaging visual angle is matched with the front visual angle of the floating real image device seen by the user, and the user can clearly see the floating real image at the current position without actively adjusting the position to adapt to the imaging visual angle of the aerial imaging device.
Step S3: and according to the imaging adjusting angle, carrying out posture adjustment on the aerial imaging equipment so as to adjust the imaging visual angle of the aerial imaging equipment.
Specifically, as described above, after the imaging adjustment angle is determined, the imaging angle of view of the aerial imaging device may be adjusted according to the imaging adjustment angle, so that the final imaging angle matches the front angle of view of the user looking at the aerial imaging device, that is, corresponds to the current user position information, and thus the user can clearly see the aerial real image at the current position without actively adjusting the position of the user to adapt to the imaging angle of the aerial imaging device. And particularly, the imaging angle of the imaging equipment can be adjusted by adjusting the posture of the aerial imaging equipment. For example, the altitude of the aerial imaging device and the rotation angle in the three-dimensional space can be correspondingly adjusted according to the imaging adjustment angle to realize the attitude adjustment of the aerial imaging device, the attitude of the aerial imaging device is changed, and the imaging angle is changed accordingly, so that the adjustment of the imaging angle of the aerial imaging device is realized, the imaging angle can be matched with the visual angle of the user along with the position of the user, the user can clearly see the aerial real image, the user does not need to actively move to find a proper visual angle, and the condition that the user experience is poor due to the fact is avoided.
According to the imaging adjusting method for the aerial imaging device, the position information of the user is obtained, the imaging adjusting angle of the aerial imaging device is determined according to the position information of the user, and the posture of the aerial imaging device is adjusted according to the imaging adjusting angle so as to adjust the imaging angle of the aerial imaging device. Therefore, self-adaptive adjustment can be carried out on the posture of the aerial imaging equipment according to the position information of the user, the imaging angle of the aerial imaging equipment is further adjusted, the imaging angle is made to be adaptive to the position and the visual angle of the user, the user can clearly see the aerial real image at any position and any visual angle, and therefore the use requirements of different users can be met, the applicability of the aerial imaging equipment is improved, and the user experience is improved.
It should be noted that a specific implementation manner of the imaging adjustment method for aerial imaging equipment in the embodiment of the present invention is similar to a specific implementation manner of the imaging adjustment device for aerial imaging equipment in the embodiment of the present invention, and please refer to the description of the device part specifically, and details are not described here again in order to reduce redundancy.
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 (12)
1. An aerial imaging device, comprising:
the optical display module is used for presenting an interactive floating real image in the air;
the measuring module is used for acquiring the position information of a user;
the main control module generates an adjusting signal according to the position information of the user;
and the adjusting module is electrically connected with the main control module and is used for adjusting the posture of the aerial imaging equipment according to the adjusting signal so as to adjust the imaging visual angle of the floating real image presented by the optical display module.
2. The aerial imaging device of claim 1, further comprising a body including a base and a housing slidably mounted on the base, the measurement module and the optical display module being mounted on the housing.
3. The aerial imaging device of claim 2, wherein the housing comprises a receiving portion and a bracket fixed to the receiving portion, the measurement module comprises a first measurement device and a second measurement device, the first measurement device is fixed to the front end of the receiving portion, and the second measurement device is fixed to the housing on the bracket.
4. The aerial imaging device of claim 3, wherein the position information of the user comprises distance information and height information, the first measuring device is configured to measure the distance information between the user and the aerial imaging device, and the second measuring device is configured to measure the height information of the user.
5. The aerial imaging device of claim 2, wherein the base comprises a fixed plate, and the adjustment module comprises a height adjustment device fixed to the fixed plate and abutting against the housing, the height adjustment device being capable of pushing the housing to slide up and down to adjust the height of the optical display module.
6. The aerial imaging device of claim 2, wherein the housing comprises a support plate, and the adjustment module comprises an angle adjustment device fixed to the support plate and abutting the optical display module, the angle adjustment device being capable of rotating the optical display module.
7. The aerial imaging device of claim 1, wherein 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 presenting a floating real image, 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 and sends the control signal to the main control module.
8. The aerial imaging device of claim 7, wherein the imaging module comprises an equivalent negative refractive index optical element and a display, the display is arranged on one side of the equivalent negative refractive index optical element, and after light rays emitted by the display pass 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.
9. The aerial imaging device of claim 8, 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.
10. The aerial imaging device of claim 9, wherein 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 reflecting units are rectangular in cross section, and reflecting films are provided along the same side or both sides in the stacking direction of the reflecting units.
11. The aerial imaging device of claim 10, wherein the equivalent negative index optical element further comprises two transparent substrates, the first and second optical waveguide arrays being disposed between the two transparent substrates.
12. An imaging adjustment method of an aerial imaging device, comprising the steps of:
acquiring position information of a user;
determining an imaging adjustment angle of aerial imaging equipment according to the position information of the user;
and according to the imaging adjusting angle, carrying out posture adjustment on the aerial imaging equipment so as to adjust the imaging visual angle of the aerial imaging equipment.
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