CN115136228B

CN115136228B - Underwater imaging device

Info

Publication number: CN115136228B
Application number: CN202280001068.4A
Authority: CN
Inventors: 陈永新; 张淼
Original assignee: Shenzhen Iwin Visual Technology Co ltd
Current assignee: Shenzhen Iwin Visual Technology Co ltd
Priority date: 2022-04-29
Filing date: 2022-04-29
Publication date: 2024-05-14
Anticipated expiration: 2042-04-29
Also published as: WO2023206351A1; CN115136228A

Abstract

The application discloses an underwater imaging device, which is provided with a projection area, a live-action area and an ornamental area, wherein the live-action area is positioned between the projection area and the ornamental area, and the underwater imaging device comprises: the water tank is used for loading liquid, a live-action area is arranged above the water tank, and the surface of the liquid is a reflecting surface; the imaging structure is positioned in the projection area and comprises a display and an air imaging plate, the display is positioned on one side of the air imaging plate, which is away from the real scenic area, and generates an aerial image in the real scenic area through the air imaging plate, and the aerial image can be reflected to the viewing area through the reflecting surface; the polarizing film is arranged on one side of the air imaging plate facing the real scenic spot and limits light rays to be emitted towards the reflecting surface.

Description

Underwater imaging device

Technical Field

The application belongs to the technical field of projection, and particularly relates to underwater imaging equipment.

Background

In the fields of construction, art, exhibition and exhibition, etc., the design of space by using water is also in accordance with the development of the age.

The combination mode of the visual image and the water is mainly realized in a projection or water curtain mode. The projector projects the visual image directly onto the water surface in its simplest form. The method is simple and low in cost. However, the projected image is a two-dimensional image, and a simple floating cursory is difficult to provide enough ornamental attraction. The water curtain takes the fountain as a curtain, and the projector projects visual images onto the fountain. To achieve good visual efficiency, water curtain projection is typically performed in large-sized waters, and is relatively complex to design and control.

Disclosure of Invention

The application aims to overcome the defects of the prior art and provide an underwater imaging device, which aims to provide another mode for displaying images by utilizing a water body.

In order to achieve the above purpose, the embodiment of the present application provides the following technical solutions:

An underwater imaging apparatus having a projection area, a live-action area, and an ornamental area, the live-action area being located between the projection area and the ornamental area, the underwater imaging apparatus comprising:

the water tank is used for loading liquid, the live-action area is arranged above the water tank, and the surface of the liquid is a reflecting surface;

The imaging structure is positioned in the projection area and comprises a display and an air imaging plate, the display is positioned on one side of the air imaging plate, which is away from the live-action area, and generates an aerial image in the live-action area through the air imaging plate, and the aerial image can be reflected to the viewing area through the reflecting surface;

and the polarizing film is arranged on one side of the air imaging plate facing the scenic spot, and is used for receiving the light from the air imaging plate and limiting the light to emit towards the direction of the reflecting surface.

Optionally, the included angle between the air imaging plate and the horizontal plane is 60-90 degrees.

Optionally, the air imaging plate is perpendicular to the horizontal plane.

Optionally, the underwater imaging device further comprises an adjusting structure for adjusting the position of the display, and the adjusting structure adjusts the position of the display according to the horizontal position of the reflecting surface, so that the air imaging can be reflected to the viewing area through the reflecting surface.

Optionally, the underwater imaging device further comprises a measurer and an adjusting structure, wherein the measurer is used for measuring the horizontal position of the reflecting surface, and the adjusting structure adjusts the position of the display according to the horizontal position so that the air imaging can be reflected to the ornamental area through the reflecting surface.

Optionally, when the reflecting surface moves upward, the display moves upward by a distance equal to the moving distance of the reflecting surface.

Optionally, the measurer is an ultrasonic sensor.

Optionally, the measurer is disposed above the water tank.

Optionally, the underwater imaging device further includes a water taker, and a liquid surface of the water taker is the reflecting surface when the water taker scoops up the liquid.

Optionally, the water tank has a design water level for loading the liquid, and the lower surface of the display is flush with the design water level.

Optionally, the water tank is provided with at least one designed water level, and a water level mark is arranged at each designed water level.

Optionally, the underwater imaging device further comprises a base and a cover body, wherein the air imaging plate is arranged on the base, and the cover body is arranged on the base and encloses with the air imaging plate to form a containing cavity for containing the display.

Optionally, the cover body is made of a light-tight material.

Optionally, a surface of the cover facing the display is coated with a reflective layer.

The underwater imaging device provided by the application has the beneficial effects that: compared with the prior art, the underwater imaging device provided by the application has the advantages that through the structural design, an observer cannot see an aerial image generated by an imaging structure, only can see an underwater image corresponding to the aerial image, and through the arrangement of the polarizing film, the observer cannot see a display. The aerial image and the display are invisible, namely, the observer is difficult to know the source of the underwater image in a mode of directly observing through eyes, so that the ornamental appreciation of the observer is stimulated. In addition, the underwater image in the scheme can be a two-dimensional plane image or a three-dimensional stereoscopic image, so that the ornamental attraction is further increased. Therefore, the application provides another mode for displaying the image by utilizing the water body, and the viewer can only see the underwater virtual image in the observation area so as to increase the ornamental attraction.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the embodiments or the description of the prior art will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of an underwater imaging apparatus according to an embodiment of the present application;

fig. 2 is a schematic structural diagram of an underwater imaging device according to an embodiment of the present application.

Wherein, each reference sign in the figure:

1. a water tank; 2. a reflecting surface; 3. an air imaging plate; 9. a polarizing film; 4. a display; 5. a virtual imaging plate; 6. aerial images; 7. an underwater image; 8. an ornamental person; 10. a measurer; 11. a water intake device; 12. a cover body; 13. a base.

Detailed Description

In order to make the technical problems, technical schemes and beneficial effects to be solved more clear, the application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the application.

It will be understood that when an element is referred to as being "mounted" or "disposed" on another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.

It is to be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate describing the present application and simplify the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present application.

Furthermore, in the description of the present application, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

Referring to fig. 1 to 2, an exemplary description will now be made of an underwater imaging apparatus provided by the present application. The underwater imaging apparatus includes a water tank 1, an imaging structure, and a polarizing film 9.

The underwater imaging device has a projection area, a live-action area, and an ornamental area, the live-action area being located between the projection area and the ornamental area.

The tank 1 is used for loading liquid. The upper part of the water tank 1 is a real scenic spot, and the surface of the liquid is a reflecting surface 2. The water tank 1 may be a container for containing a liquid, may be a cylinder, a tub, or other shapes, and those skilled in the art may select the material and size of the water tank 1 according to actual needs, and is not limited herein. The liquid can be landscape water, drinking water, etc., or can be drinks and beverages, as long as the liquid level can reflect light.

The projection area is located to the imaging structure, and the imaging structure includes display 4 and air imaging board 3, and display 4 is located the one side that air imaging board 3 deviates from the real scenic spot and generates aerial image 6 in the real scenic spot through air imaging board 3, and aerial image 6 can be through reflection face 2 reflection to the viewing area.

The polarizing film 9 is arranged on one side of the air imaging plate 3 facing the scenic spot, and the polarizing film 9 receives the light from the air imaging plate 3 and limits the light to be emitted towards the reflecting surface 2.

For convenience of description, referring to the view direction of fig. 2, the upper part of the sink 1 is a real scenic area, the upper left part is an ornamental area, and the upper right part is a projection area.

It will be appreciated that the underwater imaging device includes a base 13. In the illustrated structure, the base 13 is positioned on the right side of the water tank 1, and the water tank 1 is fixedly connected with the base 13. The air imaging plate 3 and the display 4 are provided on the base 13. In other embodiments, the water tank 1 and the base 13 may be integrally formed or detachably connected. The water tank 1 may be provided on a side of the base 13 or may be supported by the base 13, which is not limited herein.

The base 13 is used for fixedly supporting the imaging structure, and more importantly, the base 13 fixes the relative positions of the water tank 1, the air imaging plate 3 and the display 4 so as to ensure the imaging effect of the underwater image.

The imaging structure comprises a display 4 and an air imaging plate 3, wherein the air imaging plate 3 is an existing flat lens structure for an aerial image 6. The air imaging plate 3 is capable of mirror imaging the image source. The display 4 serves as a light source and an image source, and light rays with image information emitted by the display pass through the air imaging plate 3 to form an aerial image 6 on the other side of the air imaging plate 3. The display 4 is one of LCD, LED, OLED, LCOS.

Please refer to fig. 1, taking an example in which the air imaging plate 3 is vertically placed. The imaging structure is arranged at the upper right side (imaging area) of the water tank 1, and the aerial image 6 generated by the imaging structure is positioned at the scenic spot above the water tank 1. The aerial image 6 is reflected by the reflective surface 2 to form an inverted virtual image which is symmetrical to the aerial image 6 about the reflective surface 2. The viewer 8 can see the reflection surface 2 and the virtual image formed by the reflection of the air image by the reflection surface 2, which appears to be positioned under the water, in the viewing area, so as to achieve the visual effect of the underwater image 7, and for convenience of description, the virtual image will be hereinafter collectively referred to as the underwater image 7.

The light source emitted from the display 4 penetrates the air imaging plate 3 and is emitted in a diagonally downward direction toward the water tub 1 to form an aerial image 6 above the water tub 1, and the propagation path of the light does not pass through the viewing area, in other words, the light forming the aerial image 6 cannot directly enter the field of view of the observer, so that the observer 8 cannot see the aerial image 6. Light rays forming the aerial image 6 are reflected by the reflecting surface 2 into the field of view (viewing zone) of the observer so that the observer can see the underwater image 7 formed by the reflection of the aerial image by the reflecting surface 2. By the above, with the design of the present solution, the viewer 8 can see the underwater image 7 but not the aerial image 6.

In the present embodiment, a polarizing film 9 is attached to the air imaging plate 3 on the side facing the field area. The polarizing film 9 is for restricting the direction of the light transmitted from the air image forming panel 3 so as to be emitted only in the direction toward the reflection surface 2. In the absence of the polarizing film 9, incident light from the display 4 is emitted after penetrating the air imaging plate 3, and most of the emitted light is emitted in the direction of the water tank 1 and focused to form the aerial image 6, and at the same time, part of the emitted light is scattered to radiate to the periphery and part falls into the view of the viewer 8, so that the viewer 8 can see the display screen. The polarizing film 9 is disposed such that the incident light emitted from the display 4 penetrates through the air imaging plate 3 and then only penetrates through the polarizing film 9 to be emitted outwards at a specific angle, wherein the specific angle is the direction from the air imaging plate 3 to the aerial image 6, in other words, the polarizing film 9 only transmits the light required for forming the aerial image 6, and the light directly entering the viewing area is blocked or diffusely reflected, so that the viewer 8 is prevented from directly observing the display 4.

By the above, the underwater imaging device provided by the embodiment of the application enables the viewer 8 to not see the aerial image 6 generated by the imaging structure through the structural design, but only see the underwater image 7 corresponding to the aerial image 6, and enables the viewer 8 to not see the display 4 through the arrangement of the polarizing film 9. The invisibility of the aerial image 6 and the display 4, i.e. the viewer 8 has difficulty in knowing the source of the underwater image 7 by direct eye observation, motivates the viewer 8 to enjoy. In addition, the underwater image 7 in the scheme can be a two-dimensional plane image or a three-dimensional stereoscopic image, so that the ornamental attraction is further increased.

Referring to fig. 2, the underwater imaging apparatus further includes a cover 12, where the cover 12 is disposed on the base 13 and encloses with the air imaging plate 3 to form a cavity for accommodating the display 4, and the cover 12 is made of an opaque material. Can be made of rubber, plastic, metal material, etc. The cover 12, the base 13 and the air imaging plate 3 enclose a closed cavity in which the display 4 is located. This arrangement provides protection and dust protection for the display 4 on the one hand and the cover 12 is made of a light-impermeable material on the other hand to prevent external light from entering the cavity and affecting the normal display of the display 4. One skilled in the art may also coat the side of the cover 12 facing the display 4 with a reflective layer so that more light from the display 4 is emitted from the air imaging plate 3 to enhance the brightness of the aerial image 6.

In another embodiment of the application, the air imaging plate 3 is at an angle of 60-90 ° to the horizontal. The included angle between the air imaging plate 3 and the horizontal plane refers to an included angle which takes the surface of the air imaging plate 3 facing the water tank 1 as a side and takes the liquid level of the water tank 1 as another side, and the included angle is not more than 90, so that the light source of the display 4 is ensured to obliquely downwards shoot to the liquid level of the water tank 1 after passing through the air imaging plate 3 and the polarizing film 9. With the aerial image 6 fixed in position, the display 4 adjusts the corresponding position according to the angle of the air imaging plate 3 so that the display 4 and aerial image 6 are symmetrical about the air imaging plate 3. It will be appreciated that with the lower end of the air imaging plate 3 fixed, the greater the angle of the air imaging plate 3 to the horizontal, the greater the spatial extent that is left for the aerial image 6 to be formed. But the larger the distance between the display 4 and the air imaging plate 3 in horizontal projection, in other words the larger the lateral dimension occupied by the underwater imaging device. Conversely, the smaller the included angle between the air imaging plate 3 and the horizontal plane is, the smaller the space range reserved for forming the aerial image 6 is, the smaller the space of the underwater image 7 which can be formed by the underwater imaging device is, and the viewing is inconvenient. Through multiple experiments, the included angle between the air imaging plate 3 and the horizontal plane is 60 degrees to 90 degrees, so that the imaging device has a good imaging space and a convenient observation range. Those skilled in the art may specifically set the included angle between the air imaging plate 3 and the horizontal plane to 60 °, 62 °, 63 °, 65 °, 66 °, 68 °, 70 °, 73 °, 74 °, 75 °, 76 °, 77 °, 79 °, 80 °, 81 °, 82 °, 84 °, 85 °, 86 °, 88 °, 89 °, 90 ° and the like according to actual needs, and are not limited thereto.

In the illustrated embodiment, the air imaging plate 3 is perpendicular to the horizontal plane, i.e. the air imaging plate 3 is at an angle of 90 ° to the horizontal plane. This arrangement can simplify the structural design. In addition, when the horizontal position of the reflection surface 2 of the liquid is moved, the display 4 needs to be moved so that the distance between the aerial image 6 and the reflection surface 2 is kept constant. In the case where the air imaging plate 3 is perpendicular to the horizontal plane, the reflecting surface 2 moves up and down, and the display 4 moves up and down simultaneously, so that the design can simplify control.

In the embodiment of the present application, referring to fig. 1, the water tank 1 has a designed water level for loading liquid, and the lower surface of the display 4 is flush with the designed water level. The lower surface of the display 4 is flush with the design water level such that the aerial image 6 formed by the display 4 in the live-action zone is proximate the liquid level/reflective surface 2 of the sink 1, thereby causing the underwater image 7 to be proximate the liquid level/reflective surface 2 of the sink 1. Thereby effectively avoiding the situation that the underwater image 7 deviates from the liquid level of the water tank 1 and exceeds the observation range of the viewer 8.

Specifically, referring to fig. 1, the bottoms of the air imaging plate 3 and the display 4 are kept at the same level with the liquid surface/reflecting surface 2 of the water tank 1. Light from the display 4 is concentrated into the air through the air imaging plate 3 to form an aerial image 6, and the aerial image 6 is positioned symmetrically with respect to the air imaging plate 3 with respect to the display screen light source. The aerial image 6 is reflected by the reflecting surface 2 to form an underwater image 7. Assuming that the air imaging plate 3 has a symmetrical virtual imaging plate 5 about the reflective surface 2, the visual range of the viewer 8 is made up of eyes and the top and bottom of the virtual imaging plate 5, if the display 4 is far from the reflective surface 2, the underwater image 7 is deviated downwardly from the reflective surface 2 and possibly out of the visual range of the viewer 8.

In this embodiment, the water tank 1 is filled with liquid at a designed water level. In other embodiments, the design water level may be located at 4/5 of the capacity of the sink 1 or at other locations, without limitation.

When the design water level is lower than the full load water level, the water tank 1 is provided with a water level mark at the design water level to provide guidance for an operator to load liquid into the water tank 1. It should be noted that there may be a plurality of design water levels, and a plurality of corresponding water level marks.

In another embodiment of the present application, the lower surface of the air imaging plate 3 extends at least to the level of the upper surface of the water tank 1. Air imaging panel 3 the air imaging panel 3 also has the function of masking the display 4 while shaping the image source of the display 4 into an aerial image 6 in the live-action area. The lower surface of the air imaging plate 3 extends to the level of the upper surface of the sink 1 to avoid a situation where there is a gap between the air imaging plate 3 and the sink 1 that would allow the display 4 to be seen by an observer 8 in the viewing area.

In this embodiment, the air imaging plate 3 is fixed on the base 13 in an embedded manner, and those skilled in the art may also fix the air imaging plate 3 on the side wall of the water tank 1, or use other fixing connection manners, which are not limited herein.

In another embodiment of the application the underwater imaging device further comprises an adjustment structure for adjusting the position of the display 4, the adjustment structure adjusting the position of the display 4 in accordance with the level of the reflective surface 2, so that the aerial image 6 can be reflected via the reflective surface 2 to the viewing area.

In combination with the foregoing, in the case that there are a plurality of design water levels, for example, five design water levels are respectively located at 1/4, 1/2, 3/4, 4/5 of the height of the water tank 1. The operator pours the liquid into the water tank 1 and makes its liquid level reach one of the design water levels, and then controls the adjusting structure correspondingly to make the display 4 reach the adjusting position corresponding to the design water level.

In general, the surface of the liquid contained in the water tank 1 is a reflecting surface 2. The level of the reflecting surface 2 is different depending on the amount of the liquid contained in the water tank 1. The display 4 can be adjusted according to the different positions of the horizontal position by setting the adjusting structure, so that the distance between the aerial image 6 generated in the real scene area and the reflecting surface 2 after the display 4 passes through the air imaging plate 3 and the polarizing film 9 is kept unchanged. From the perspective of the viewer 8, the distance between the corresponding underwater image 7 and the reflecting surface 2 is also kept unchanged, so that the viewer 8 can see the underwater image 7 at different liquid levels.

The adjustment structure may be a linear module, a drive screw, or other structure as long as it is capable of driving the display 4 to move linearly.

The adjusting structure can be driven manually or electrically.

Take the manual adjustment as an example of the adjustment structure. The adjusting structure comprises a nut connected with the display 4 and a screw rod in threaded connection with the nut, and the screw rod extends vertically. The operator can obtain the level of the reflecting surface 2 by observing the liquid level by eyes, and correspondingly rotates the screw rod according to the level, so that the nut moves up and down together with the display 4.

In another embodiment of the present application, referring to the drawings, the underwater imaging apparatus further comprises a measurer 10, wherein the measurer 10 is used for measuring the horizontal position of the reflecting surface 2, and the adjusting structure adjusts the position of the display 4 according to the horizontal position, so that the aerial image 6 can be reflected to the viewing area through the reflecting surface 2.

The measurer 10 may be a water level gauge, an ultrasonic sensor, or the like. The measuring device 10 is used for measuring the horizontal position of the reflecting surface 2, so that compared with the observation of human eyes, the measuring device is quicker and more accurate.

It will be appreciated that the underwater imaging device further comprises a controller electrically connected to the display 4, the measurer 10 and the adjustment structure, the controller receiving the water level information measured from the measurer 10 and controlling the adjustment structure operation according to the water level information to change the position of the display 4.

In combination with the use scenario, the operator adds water into the sink 1 to raise the level. The measurer 10 obtains the height of the liquid level/reflection surface 2 and transmits the height information to a controller, which controls the operation of the adjustment structure according to the height information. The adjusting structure drives the display 4 to rise along with the rising of the display 4 under the control of the controller, and the rising distance of the display 4 is the same as the rising distance of the horizontal position. Since the air imaging plate 3 is placed vertically, the display 4 is raised so that the aerial image 6 is raised synchronously, and the distance of the aerial image 6 from the reflecting surface 2 is kept uniform. At the view of the viewer 8, the water level in the water tank 1 rises and the underwater image 7 rises dynamically, thereby becoming interesting.

In another embodiment of the present application, the underwater imaging device further includes a water taker 11, and the liquid surface of the water taker 11 is the reflection surface 2 when the water taker 11 scoops up the liquid. The water taking device 11 can be a water scooping tool such as a water cup, a bowl, a ladle, a spoon and the like, and can also be a folded palm.

Referring to fig. 2, when the water collector 11 scoops up the liquid and lifts the liquid by L2, the liquid surface (the reflecting surface 2) of the water collector 11 is also lifted by L2, and at this time, the adjusting structure lifts the display 4 upward by L1 (the display 4 moves upward by L1 to the dashed line frame in fig. 2), the aerial image 6 generated in the live-action area after passing through the air imaging plate 3 and the polarizing film 9 also lifts upward by L1 by L2, so that the distance between the aerial image 6 and the reflecting surface 2 remains unchanged, and correspondingly, the distance between the underwater image 7 and the reflecting surface 2 remains unchanged, and the underwater image 7 moves upward by L2 from the water tank and is located at the dashed line frame in the water collector 11. From the perspective of the viewer 8, the underwater image 7 runs from the water tank 1 into the water intake device 11, and has the illusion of scooping up the entity from the water tank 1 as the water intake device 11 is lifted up. For example, the aerial image 6 is an inverted fish, and the underwater image 7 is a forward fish. The viewer 8 sees the "fish" under water in the sink 1, trying to hold the "fish" in the sink 1 with the liquid with both hands closed. When the liquid is being cradled, the "fish" that is the underwater image 7 is also actually transferred from the sink 1 into the palm of the hand, creating the illusion of cradling a solid fish. At this time, if the hand is released, the liquid in the palm falls into the water tank 1, and the "fish" of the underwater image 7 also returns to the water tank 1. In other words, the underwater imaging device provided in this embodiment, by means of the water collector 11, the measurer 10 and the adjusting structure, realizes interaction with the underwater image 7 by changing the height of the reflecting surface 2, thereby improving the interest of the underwater imaging device.

In other embodiments, the tank 1 may be replaced by a fish tank, in which a real fish population may be placed. The underwater imaging device generates an underwater image 7 under the reflecting surface 2 in the fish tank, which underwater image 7 may be a simple introduction of some fish or some fish that virtually swim. By the method, the viewing experience can be improved, and the real fish shoal cannot be damaged.

In the present embodiment, the measuring instrument 10 is an ultrasonic sensor. The ultrasonic wave emitted by the ultrasonic sensor is obviously reflected at the interface (reflecting surface 2) between air and liquid to form a reflection echo, and the position height of the reflecting surface 2 is obtained through the time analysis of the echo. The adoption of the ultrasonic sensor to measure the height of the reflecting surface 2 has the following advantages: the device has no mechanical transmission part and does not contact the measured liquid, belongs to non-contact measurement, is not afraid of strong corrosive liquids such as electromagnetic interference, acid and alkali, and the like, and has stable performance, high reliability and long service life; the response time is short, and the real-time measurement without hysteresis can be conveniently realized.

Since the ultrasonic sensor is a non-contact measurement, the position of the reflecting surface 2 is changed by replacing the water tank 1 with a water cup or other water container, or by placing another water container above the water tank 1. As long as the liquid level (reflecting surface 2) of the water container is within the sensing range of the ultrasonic sensor, the adjusting structure drives the display 4 to make corresponding position adjustment, so that the underwater image 7 is transferred into the water container. Taking a water cup as an example, drinking water is added into the water cup, the water cup is arranged below the ultrasonic sensor so that the ultrasonic sensor senses the position of the water cup liquid level (the reflecting surface 2), the aerial imaging device forms an underwater image 7 in the water cup, and the ultrasonic sensor is positioned outside the water cup, so that the ornamental experience of the underwater image 7 is not affected, and the sanitary problem is not caused to the drinking water in the cup.

In the present embodiment, the measuring device 10 is provided directly above the water tank 1. The ultrasonic wave emitted by the ultrasonic sensor is perpendicular to the reflecting surface 2, so that the propagation path of the ultrasonic wave is shortened, and the response time of the adjusting structure is shortened.

The foregoing description of the preferred embodiments of the application is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the application.

Claims

1. An underwater imaging apparatus having a projection area, a live-action area, and an ornamental area, the live-action area being located between the projection area and the ornamental area, the underwater imaging apparatus comprising:

The imaging structure is positioned in the projection area and comprises a display and an air imaging plate, the display is positioned on one side of the air imaging plate, which is away from the live-action area, and generates an aerial image in the live-action area through the air imaging plate, and the aerial image can be reflected to the viewing area through the reflecting surface; the air imaging plate is of a flat lens structure for aerial images, and can image an image source in a mirror image mode;

And the polarizing film is attached to one side of the air imaging plate facing the scenic spot, and is used for receiving light rays from the air imaging plate and limiting the light rays to emit towards the direction of the reflecting surface.

2. An underwater imaging apparatus as in claim 1 wherein the air imaging plate is angled from 60 ° to 90 ° from horizontal.

3. The underwater imaging apparatus of claim 1, wherein the air imaging plate is perpendicular to a horizontal plane.

4. The underwater imaging apparatus of claim 1, further comprising an adjustment structure for adjusting a position of the display, the adjustment structure adjusting the position of the display according to a level of the reflection surface so that the air image can be reflected to the viewing area via the reflection surface.

5. The underwater imaging apparatus of claim 1, further comprising a measurer for measuring a level of the reflection surface and an adjustment structure for adjusting a position of the display according to the level so that the air image can be reflected to the viewing area via the reflection surface.

6. The underwater imaging apparatus of claim 5, wherein the display moves upward and by the same distance as the reflection surface moves when the reflection surface moves upward.

7. The underwater imaging apparatus as in claim 5, wherein the measurer is an ultrasonic sensor.

8. The underwater imaging apparatus as in claim 7, wherein the measurer is provided above the water tank.

9. The underwater imaging apparatus as defined in claim 5, further comprising a water intake, a liquid surface of the water intake being the reflective surface when the water intake scoops up the liquid.

10. An underwater imaging apparatus as claimed in any of claims 1 to 9, wherein the water tank has a design water level for loading the liquid, and the lower surface of the display is flush with the design water level.

11. The underwater imaging apparatus as claimed in claim 4, wherein the water tanks are at least one of the design water levels and a water level mark is provided at each of the design water levels.

12. The underwater imaging apparatus as claimed in any one of claims 1 to 9, wherein the underwater imaging apparatus further comprises a base and a cover, the air imaging plate is provided on the base, and the cover is provided on the base and encloses with the air imaging plate to form a cavity for accommodating the display.

13. The underwater imaging apparatus as in claim 12, wherein the housing is made of a light-impermeable material.

14. The underwater imaging apparatus as in claim 12, wherein a surface of the housing facing the display is coated with a light reflective layer.