CN115602079A - Aerial imaging system and man-machine interaction system based on aerial imaging - Google Patents

Aerial imaging system and man-machine interaction system based on aerial imaging Download PDF

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Publication number
CN115602079A
CN115602079A CN202110718209.1A CN202110718209A CN115602079A CN 115602079 A CN115602079 A CN 115602079A CN 202110718209 A CN202110718209 A CN 202110718209A CN 115602079 A CN115602079 A CN 115602079A
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CN
China
Prior art keywords
image
display
light
aerial imaging
imaging system
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Pending
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CN202110718209.1A
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Chinese (zh)
Inventor
张亮亮
李军昌
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Anhui Easpeed Technology Co Ltd
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Anhui Easpeed Technology Co Ltd
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Priority to CN202110718209.1A priority Critical patent/CN115602079A/en
Priority to PCT/CN2022/102026 priority patent/WO2023274255A1/en
Publication of CN115602079A publication Critical patent/CN115602079A/en
Pending legal-status Critical Current

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    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F19/00—Advertising or display means not otherwise provided for
    • G09F19/12—Advertising or display means not otherwise provided for using special optical effects
    • G09F19/18—Advertising or display means not otherwise provided for using special optical effects involving the use of optical projection means, e.g. projection of images on clouds
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/017—Gesture based interaction, e.g. based on a set of recognized hand gestures
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/048—Interaction techniques based on graphical user interfaces [GUI]
    • G06F3/0484—Interaction techniques based on graphical user interfaces [GUI] for the control of specific functions or operations, e.g. selecting or manipulating an object, an image or a displayed text element, setting a parameter value or selecting a range
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/048—Interaction techniques based on graphical user interfaces [GUI]
    • G06F3/0487—Interaction techniques based on graphical user interfaces [GUI] using specific features provided by the input device, e.g. functions controlled by the rotation of a mouse with dual sensing arrangements, or of the nature of the input device, e.g. tap gestures based on pressure sensed by a digitiser
    • G06F3/0488—Interaction techniques based on graphical user interfaces [GUI] using specific features provided by the input device, e.g. functions controlled by the rotation of a mouse with dual sensing arrangements, or of the nature of the input device, e.g. tap gestures based on pressure sensed by a digitiser using a touch-screen or digitiser, e.g. input of commands through traced gestures

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  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Human Computer Interaction (AREA)
  • Business, Economics & Management (AREA)
  • Accounting & Taxation (AREA)
  • Marketing (AREA)

Abstract

The present application provides an aerial imaging system comprising: a display for emitting image light; the imaging module is positioned on the light path of the image light, is used for converging the image light, and is used for projecting the converged image light to the air to present a floating real image; the imaging module comprises a concave mirror, and the distance between the display and the concave mirror is larger than the focal length of the concave mirror, so that the floating real image is a real image. In the aerial imaging system of this application, the imaging module includes concave mirror and half reflection and half transmission mirror for the floating real image formation of image light is clear, and resolution ratio is high, and image light energy loss is less. The application also provides a man-machine interaction system based on aerial imaging.

Description

Aerial imaging system and man-machine interaction system based on aerial imaging
Technical Field
The application relates to the field of aerial imaging, in particular to an aerial imaging system and a man-machine interaction system based on aerial imaging.
Background
The aerial imaging system can directly project a real image into the air without a carrier so as to be observed by human eyes. Aerial imaging systems include imaging elements, commonly known as optical waveguide arrays, microlens arrays, and retro-reflectors.
The real image formed by the aerial imaging system adopting the optical waveguide array has the advantages of no distortion and high definition, but residual images appear on the left side and the right side of the real image due to the fact that light rays are possibly reflected for multiple times in the optical waveguide array. The aerial imaging system using the microlens array is advantageous for reducing the size of the aerial imaging system, but in order to achieve higher resolution, the size of the sub-lenses in the microlens array needs to be reduced, and the reduction in size of the sub-lenses causes cost to rise. The air imaging system adopting the retro-reflector has lower cost, but has lower light energy loss, poorer definition and lower imaging brightness.
Disclosure of Invention
One aspect of the present application provides an aerial imaging system, comprising:
a display for emitting image light; and
the imaging module is positioned on the light path of the image light, is used for converging the image light and is used for projecting the converged image light to the air to present a floating real image;
the imaging module comprises a concave mirror, and the distance from the display to the concave mirror is greater than the focal length of the concave mirror so that the floating real image is a real image.
The application provides a man-machine interaction system based on aerial imaging in another aspect, including:
the aerial imaging system is used for projecting a floating real image;
the sensor is used for sensing touch control or gestures aiming at the floating real image and generating sensing signals according to the touch control or gestures; and
and the controller is connected with the sensor and the display, is used for receiving the sensing signal and is used for controlling the display to display an image corresponding to the touch control or the gesture according to the sensing signal.
According to the aerial imaging system and the man-machine interaction system based on aerial imaging, the imaging module of the aerial imaging system comprises the concave mirror and the semi-reflecting and semi-transparent mirror, so that floating real images formed according to image light are clear in imaging, high in resolution and small in light energy loss of the image light.
Drawings
Fig. 1 is a schematic structural diagram of an aerial imaging system according to a first embodiment of the present application.
Fig. 2 is another schematic structural diagram of an aerial imaging system according to a first embodiment of the present application.
Fig. 3 is another schematic structural diagram of an aerial imaging system according to a first embodiment of the present application.
Fig. 4 is another schematic structural diagram of an aerial imaging system according to the first embodiment of the present application.
Fig. 5 is a schematic structural diagram of an aerial imaging system according to a second embodiment of the present application.
Fig. 6 is another schematic structural diagram of an aerial imaging system according to a second embodiment of the present application.
Fig. 7 is a schematic structural diagram of an aerial imaging system according to a third embodiment of the present application.
Fig. 8 is a schematic structural diagram of an aerial imaging system according to a fourth embodiment of the present application.
Fig. 9 is another schematic structural diagram of an aerial imaging system according to a fourth embodiment of the present application.
Fig. 10 is another schematic structural diagram of an aerial imaging system according to a fourth embodiment of the present application.
Fig. 11 is a schematic structural diagram of a human-computer interaction system based on aerial imaging according to a fifth embodiment of the present application.
Description of the main elements
Aerial imaging system 10, 30, 40, 50
Display 11
Imaging module 12
Reflecting mirror 122
Concave mirror 123
Half mirror 124
Image light L1
Optical axis L2
Light receiving surface S1
Section cut S2
Geometric centers C1, C2
Focal length f
Floating real image 20
Human-computer interaction system 100
Sensor 80
Sensing region 810
Controller 90
Windshield 200
Coating area 210
The following detailed description will further illustrate the present application in conjunction with the above-described figures.
Detailed Description
In various embodiments of the present invention, for convenience in description and not in limitation, the term "coupled" as used in the specification and claims of the present application is not intended to be limited to physical or mechanical connections, either direct or indirect. "upper", "lower", "below", "left", "right", and the like are used merely to indicate relative positional relationships, and when the absolute position of the object to be described is changed, the relative positional relationships are changed accordingly.
Example one
Referring to fig. 1, an aerial imaging system 10 can project image light L1 into space to present a floating real image 20 in the air (in air or in vacuum, etc.), and the floating real image 20 can be observed by human eyes.
The aerial imaging system 10 of the present embodiment includes a display 11 and an imaging module 12. The display 11 is for emitting image light L1. The imaging module 12 is located on the optical path of the image light L1, and is configured to converge the image light L1, and project the converged image light L1 into the air to present a floating real image 20.
In this embodiment, the display 11 is a flat panel display, such as a liquid crystal flat panel display device, an organic light emitting flat panel display device, or the like. When the display 11 is a flat display, the floating real image 20 presented by the aerial imaging system 10 is a two-dimensional flat image. In a modified embodiment, the display 11 may be a three-dimensional display, for example, a true three-dimensional display implemented by using a holographic three-dimensional imaging technology, a static volume imaging technology, a translational volume scanning technology, a rotating body scanning technology, or the like, or a pseudo three-dimensional display implemented by using a binocular parallax principle of human eyes and incorporating a cylindrical microlens array or a slit grating. When the display 11 is a three-dimensional display, the floating real image 20 presented by the aerial imaging system 10 is a three-dimensional stereoscopic image.
In this embodiment, the imaging module 12 includes a concave mirror 123. The concave mirror 123 is configured to receive and focus the image light L1, and is further configured to reflect the focused image light L1.
The concave mirror 123 includes a light receiving surface S1. The light receiving surface S1 is a spherical surface or a paraboloid, and receives, focuses, and reflects the image light L1. When the light receiving surface S1 is a spherical surface, the floating real image 20 is distorted, and the distortion can be reduced by increasing the focal length of the concave mirror 123. When the light receiving surface S1 of the concave mirror 123 is a paraboloid, the imaging distortion of the light receiving surface S1 is smaller than when the light receiving surface S1 is a spherical surface, but when the light receiving surface S1 is a spherical surface, it is advantageous to reduce the manufacturing cost of the concave mirror 123.
The light receiving surface S1, whether spherical or parabolic, receives and reflects the image light L1, and then the floating real image 20 displayed by the image light L1 is distorted to some extent. The aerial imaging system 10 of this embodiment therefore further includes a half mirror 124. The half mirror 124 is located on the optical path of the image light L1, and is configured to receive the image light L1 emitted from the display 11 and reflect the image light L1 emitted from the display 11 to the light receiving surface S1, and also configured to receive the image light L1 reflected by the reflecting surface S1 and transmit the image light L1 reflected by the reflecting surface S1. That is, the half mirror 124 adjusts the angle at which the image light L1 emitted from the display 11 is incident on the light receiving surface S1.
Referring to fig. 2, the light-receiving surface S1 has a geometric center C1, and the light-receiving surface S1 has a section S2 passing through the geometric center C1. The half mirror 124 has a geometric center C2, and a connection line between the geometric center C1 and the geometric center C2 is perpendicular to the tangent plane S2, i.e., the geometric center C1 and the geometric center C2 are located on the optical axis L2 of the concave mirror 123. The half mirror 124 and the tangent plane S2 form an included angle of 45 °. A line connecting the geometric center of the display 11 and the geometric center C2 of the half mirror 124 is perpendicular to the optical axis L3.
The image light L1 emitted from the display 11 enters the half mirror 124, and is reflected by the half mirror 124 to the light receiving surface S1, and the light ray of the image light L1 passing through the geometric center C2 enters the light receiving surface S1 perpendicular to the tangent plane S2; that is, the light ray passing through the geometric center C2 in the image light L1 is incident on the geometric center C1 of the light receiving surface S1. In this way, the distortion of the floating real image 20 displayed by the image light L1 reflected by the light receiving surface S1 back to the half mirror 124 is small.
The distance between the geometric center of the display 11 and the geometric center C2 of the half mirror 124 is greater than one focal length f of the concave mirror 123, so that the floating real image 20 formed by the image light L1 is a real image. When the distance between the geometric center of the display 11 and the geometric center C2 of the half mirror 124 is between one focal length and two focal lengths of the concave mirror 123, the floating real image 20 is an enlarged image compared with the image displayed on the display 11, as shown in fig. 2. When the distance between the geometric center of the display 11 and the geometric center C2 of the half mirror 124 is twice the focal length of the concave mirror 123, the floating real image 20 is a larger image than the display image of the display 11, as shown in fig. 3. When the distance between the geometric center of the display 11 and the geometric center C2 of the half mirror 124 is greater than twice the focal length of the concave mirror 123, the floating real image 20 is a reduced image compared to the image displayed by the display 11, as shown in fig. 4.
The aerial imaging system 10 of the present embodiment includes the concave mirror 123 as an imaging element in the imaging module 12, so that the floating real image 20 formed according to the image light L1 is clearly imaged, the resolution is high, and the optical energy loss of the image light L1 is small.
Example two
Referring to fig. 5, the aerial imaging system 30 of the present embodiment is different from the first embodiment in that: in aerial imaging system 30, imaging module 12 further includes at least one mirror 122. The following is illustrated as including a mirror 122. When aerial imaging system 30 includes a mirror 122, mirror 122 is positioned in the optical path of image light L1. The reflecting mirror 122 is used for reflecting the received image light L1 to change the transmission direction of the image light L1, that is, to change the optical path of the image light L1. The mirror 122 is a metallized film or dielectric film mirror. When the reflector 122 is an aluminum-plated reflector, it is advantageous to save cost.
The reflector 122 may be disposed at different positions on the optical path of the image light L1, for example, in the aerial imaging system 30 shown in fig. 5, the reflector 122 is located between the display 11 and the half mirror 124, and is used for reflecting the image light L1 emitted from the display 11 to the half mirror 124. Or for example, in the aerial imaging system 30 shown in fig. 6, the reflecting mirror 122 is located between the half mirror 124 and the floating real image 20, and is used for reflecting the image light L1 transmitted by the half mirror 124 to the target position to display the floating real image 20.
Referring to fig. 4, when the aerial imaging system does not include the mirror 122, the aerial imaging system 30 has a larger size in the horizontal direction (the horizontal direction based on fig. 4) and the vertical direction (the vertical direction based on fig. 4) in order to display the floating real image 20. In the embodiment, taking fig. 5 as an example, the optical path of the image light L1 between the display 11 and the half mirror 124 is changed by the reflection action of the reflection mirror 122 between the display 11 and the half mirror 124, and the distance between the display 11 and the half mirror 124 is reduced in the vertical direction (the vertical direction based on fig. 5), that is, the size of the aerial imaging system 30 in the vertical direction is reduced. Taking fig. 6 as an example, the optical path of the image light L1 between the half mirror 124 and the floating real image 20 is changed by the reflection action of the mirror 122 between the half mirror 124 and the floating real image 20, and the distance between the half mirror 124 and the floating real image 20 is reduced in the horizontal direction (horizontal direction with reference to fig. 6), that is, the size of the aerial imaging system 30 in the horizontal direction is reduced.
The aerial imaging system 30 of the present embodiment can achieve all the advantages as described in the first embodiment. On this basis, the aerial imaging system 30 in the present embodiment changes the optical path of the image light L1 through the reflection action of the reflector 122, which is beneficial to reducing the size of a certain dimension of the aerial imaging system 30, thereby reducing the overall volume of the aerial imaging system 30.
EXAMPLE III
Referring to fig. 7, the aerial imaging system 40 of the present embodiment is different from the first embodiment in that: the light receiving surface S1 of the concave mirror 123 is an ellipsoid or a free-form surface, and the aerial imaging system 40 does not include the half mirror 124. The other structures of the aerial imaging system 40 are substantially the same as those of the first embodiment, and the following portions of the present embodiment mainly describe the above-described differences.
When the light receiving surface S1 of the concave mirror 123 is an ellipsoid, light emitted from one focal point always converges at the other focal point due to the characteristics of the ellipsoid, the display 11 is placed at the one focal point of the concave mirror 123 (the geometric center of the display 11 is located at the one focal point of the concave mirror 123), and the floating real image 20 is observed at the other focal point. And the distortion of the floating real image 20 can be reduced by reducing the curvature of the light receiving surface S1 of the concave mirror 123 or reducing the size of the display 11.
When the light receiving surface S1 of the concave mirror 123 is a free curved surface, it is necessary to design the surface shape of the light receiving surface S1, which is advantageous in obtaining the floating real image 20 with less distortion, but the use of the ellipsoidal light receiving surface S1 is advantageous in saving the manufacturing cost of the concave mirror 123.
The aerial imaging system 40 of this embodiment can achieve all the advantages described in the third embodiment.
Example four
Referring to fig. 8, the aerial imaging system 50 of the present embodiment is mainly different from the fifth embodiment in that: in the aerial imaging system 50, the imaging module 12 further includes at least one mirror 122. The following is illustrated as including a mirror 122. When aerial imaging system 50 includes a mirror 122, mirror 122 is positioned on the optical path of image light L1. The reflecting mirror 122 is used for reflecting the received image light L1 to change the transmission direction of the image light L1, that is, to change the optical path of the image light L1. The mirror 122 is a metallized film or dielectric film mirror. When the reflector 122 is an aluminum-plated reflector, it is advantageous to save cost.
The reflecting mirror 122 may be disposed at different positions on the optical path of the image light L1, for example, in the aerial imaging system 50 shown in fig. 8, the reflecting mirror 122 is located between the concave mirror 123 and the floating real image 20, and is used for reflecting the image light L1 reflected by the concave mirror 123 to a target position to display the floating real image 20. Or, for example, in the aerial imaging system 50 shown in fig. 9, the reflecting mirror 122 is located between the concave mirror 123 and the display 11, and reflects the image light L1 emitted from the display 11 to the light receiving surface S1 of the concave mirror 123.
Referring to fig. 10, taking the aerial imaging system 50 in fig. 9 as an example, when the aerial imaging system 50 is applied to a scene of a head-up display of an automobile, the floating real image 20 displayed by the aerial imaging system 50 is suspended in the space inside the automobile and can be observed and operated (touch or gesture) by a driver inside the automobile. Under the above-mentioned scenario, the automobile windshield 200 has a coated area 210, the coated area 210 is coated with a reflection increasing film, the image light L1 reflected from the concave mirror 123 enters the coated area 210, and is reflected by the coated area 210 to the target position to display the floating real image 20.
The aerial imaging system 50 of the present embodiment can achieve all the advantageous effects as described in the fourth embodiment. On this basis, similar to the reflector 122 in the second embodiment, the aerial imaging system 50 in the present embodiment changes the optical path of the image light L1 through the reflection action of the reflector 122, which is beneficial to reducing the size of a certain dimension of the aerial imaging system 50, thereby reducing the overall volume of the aerial imaging system 50.
EXAMPLE five
Referring to fig. 11, the man-machine interaction system 100 based on aerial imaging provided by the embodiment includes any one of the aerial imaging systems described above. Human-computer interaction system 100 also includes sensor 80 and controller 90. The controller 90 is connected to the sensor 80 and the display 11 in the aerial imaging system, respectively.
The sensor 80 is configured to sense a touch or a gesture with respect to the floating real image 20, and generate a sensing signal according to the touch or the gesture. The controller 90 is configured to receive the sensing signal and control the display 11 to display an image corresponding to the touch or gesture according to the sensing signal.
The sensor 80 is an optical sensor including, but not limited to, near-far infrared, ultrasonic, laser interference, grating, encoder, fiber optic or charge coupled device, etc. The optimal sensor type can be selected according to the installation space, the viewing angle and the use environment, so that a user can conveniently view or operate the floating real image 20 in the optimal posture, and the sensitivity and the convenience of the user operation are improved. The controller 90 may be a control chip, a control chipset, or a computer host. The controller 90 and the sensor 80 can be connected by wire or wireless, and transmit digital or analog signals (i.e. the sensing signal is digital or analog), so as to flexibly control the volume of the human-computer interaction system 100.
When the floating real image 20 is projected into the air, the user's hand may operate on the floating real image, such as touch or gesture. The sensor 80 has a sensing area 810, and the sensing area 810 of the sensor 80 is located on the same plane as the floating real image 20 or includes a three-dimensional space where the floating real image 20 is located. When the user touches the real floating image 20 with his hand, the sensor 80 can sense the touch position and feed the touch position back to the controller 90, and the controller 90 controls the display 11 to display the corresponding image according to the touch position. When the hand of the user makes a gesture (e.g., circle) at a certain distance from the real floating image 20, the sensor 80 may sense the gesture information and feed the gesture information back to the controller 90, and the controller 90 controls the display 11 to display a corresponding image according to the gesture information.
The man-machine interaction system 100 based on aerial imaging of the embodiment comprises any aerial imaging system, and can achieve the beneficial effects of any aerial imaging system (10, 30, 40, 50).
It will be appreciated by those skilled in the art that the above embodiments are illustrative only and not intended to be limiting, and that suitable modifications and variations may be made to the above embodiments without departing from the true spirit and scope of the invention.

Claims (10)

1. An aerial imaging system, comprising:
a display for emitting image light; and
the imaging module is positioned on the light path of the image light, is used for converging the image light and is used for projecting the converged image light to the air to present a floating real image;
the imaging module comprises a concave mirror, and the distance from the display to the concave mirror is greater than the focal length of the concave mirror so that the floating real image is a real image.
2. The aerial imaging system of claim 1, wherein the concave mirror comprises a light receiving surface for receiving and reflecting the image light, the light receiving surface being spherical or parabolic;
the imaging module further comprises a half-mirror, and the half-mirror is used for reflecting the image light emitted by the display to the light receiving surface so as to be reflected by the light receiving surface and transmitting the image light reflected by the light receiving surface.
3. The aerial imaging system of claim 2, wherein the light-receiving surface has a tangent plane at a geometric center thereof, and the half mirror forms an angle of 45 degrees with the tangent plane.
4. The aerial imaging system of claim 2, wherein the light-receiving surface has a tangent plane at a geometric center thereof, and image light incident at the geometric center is perpendicular to the tangent plane.
5. The aerial imaging system of claim 1, wherein the concave mirror comprises a light receiving surface for receiving and reflecting the image light, the light receiving surface being an ellipsoid or a free-form surface.
6. An aerial imaging system as claimed in claim 5 wherein the display is located at a focus of a geometric center of the concave mirror.
7. An aerial imaging system as defined in any of claims 1-6, wherein the imaging module further comprises at least one mirror positioned in the path of the image light for changing the direction of travel of the image light.
8. An aerial imaging system as claimed in any one of claims 1 to 6, wherein the display is a flat display and the floating real image is a two-dimensional image.
9. An aerial imaging system as claimed in any one of claims 1 to 6, wherein the display is a three-dimensional display and the floating real image is a stereoscopic image.
10. A human-computer interaction system based on aerial imaging is characterized by comprising:
an aerial imaging system as claimed in any one of claims 1 to 9, for projecting a floating real image;
the sensor is used for sensing touch or gestures aiming at the floating real image and generating sensing signals according to the touch or gestures; and
and the controller is connected with the sensor and the display, and is used for receiving the sensing signal and controlling the display to display an image corresponding to the touch control or the gesture according to the sensing signal.
CN202110718209.1A 2021-06-28 2021-06-28 Aerial imaging system and man-machine interaction system based on aerial imaging Pending CN115602079A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN202110718209.1A CN115602079A (en) 2021-06-28 2021-06-28 Aerial imaging system and man-machine interaction system based on aerial imaging
PCT/CN2022/102026 WO2023274255A1 (en) 2021-06-28 2022-06-28 Aerial imaging system and aerial imaging-based human-computer interaction system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202110718209.1A CN115602079A (en) 2021-06-28 2021-06-28 Aerial imaging system and man-machine interaction system based on aerial imaging

Publications (1)

Publication Number Publication Date
CN115602079A true CN115602079A (en) 2023-01-13

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Country Status (1)

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