CN214586263U - Controllable dimming display system - Google Patents

Abstract

The utility model discloses a controllable dimming display system, including support 1 and first transparent display screen 21, first transparent display screen 21 is used for showing the corresponding image for observer 9 through this first transparent display screen 21 and watches, the corresponding image is the image that forms for specific formation of image carrier with first transparent display screen 21; it is characterized by comprising: the polarizer comprises a polarizer 4 and an analyzer 5, the polarizer 4 is used for converting the light passing through the polarizer 4 into polarized light, and the vibration direction of the polarized light is consistent with the polarization direction of the polarizer 4. Through the utility model discloses, when observer 9 watched transparent image 31 under the environment of hi-lite, the contrast of the transparent stack image picture that sees and transparent image 31's definition were showing and are promoting.

Description

Controllable dimming display system

Technical Field

The utility model relates to an optical display technical field specifically is a through adjusting transparent display screen background image's black depth degree, thereby right the contrast and the transparency of transparent stack image picture of transparent display screen carry out the controllable display system that adjusts luminance of free control.

Background

At present, common transparent display screens (e.g., transparent OLED screens, transparent liquid crystal screens) on the market are widely used in the industries of exhibition and amusement due to their unique transparent visual effects, but these transparent display screens all have a limitation that in an environment with high brightness (e.g., outdoors or in an exhibition hall), as shown in fig. 7, a transparent image 31 is an image displayed by a first transparent display screen 21, and the transparent image 31 is interfered by light emitted from a background image (e.g., a real background 7) behind the first transparent display screen 21, so that the definition of the transparent image 31 viewed by an observer 9 is poor, and in addition, the transparency of the first transparent display screen 21 cannot be gradually adjusted, which affects the viewing experience in different occasions. The background image refers to all real-scene images or virtual images that can be seen through the transparent display surface of the first transparent display screen 21 by the line of sight 11, but does not include the transparent image 31 of the first transparent display screen 21. The first transparent display screen 21 may be a transparent OLED screen or a transparent projection display screen.

The main reasons for the poor visibility of the transparent image 31 viewed by the viewer 9 are: the light intensity (brightness) of the transparent image 31 is lower than the light intensity emitted from the background image (for example, the background object 7), which causes the contrast of the transparent superimposed image to be reduced, and the whole screen to be grayed out, so that the transparent image 31 is not clearly seen. The transparent superposed image is an image formed by superposing and mixing the transparent image 31 displayed by the first transparent display screen 21 and the background image (for example, the real object background 7); according to the imaging rule of the transparent image superposition, in order to improve the contrast of the transparent superposed image picture, the brightness of the transparent image 31 of the first transparent display screen 21 is improved and/or the blackness (blackness) of the background image of the first transparent display screen 21 is improved.

Disclosure of Invention

As shown in fig. 7, the present invention actually solves the problem of the defects in the background art: in the case that strong light is emitted into the eyes of the observer 9 from the back of the first transparent display 21, the degree of blackness of the background image of the first transparent display 21 is insufficient (not enough black), so that the contrast of the transparent superimposed image viewed by the observer 9 is insufficient, and the transparent image 31 is unclear.

Therefore, an object of the present invention is to provide a controllable dimming display system and a method of using the same, which can gradually adjust and control the contrast of the transparent superimposed image and the transparency of the first transparent display screen 21 in a bright light environment, so as to overcome the above-mentioned defects.

Therefore, the utility model provides a controllable dimming display system, including support 1 and first transparent display screen 21, first transparent display screen 21 is used for showing the corresponding image for observer 9 through first transparent display screen 21 and watches, the corresponding image is the image that forms as specific formation of image carrier first transparent display screen 21; the system is characterized by comprising: a polarizer and a power device, wherein the polarizer comprises a polarizer 4 and an analyzer 5, the polarizer 4 is used for changing the light passing through the polarizer 4 into polarized light, the vibration direction of the polarized light is consistent with the polarization direction of the polarizer 4, the analyzer 5 is used for receiving the light emitted from the polarizer 4, and the power device comprises an actuator 12, and the actuator 12 is used for rotating the polarizer 4 or the analyzer 5; the bracket 1 is connected with the power device, and the polarizer 4 or the analyzer 5 is connected with the driver 12; the polarizer is positioned between the first transparent display screen 21 and the background real object 7; the polarizer and the first transparent display screen 21 are located between the viewer 9 and the background real object 7.

Preferably, the method further comprises the following steps: the support comprises a vehicle body 10 and a sensor 14, wherein the support 1 comprises the vehicle body 10, and the vehicle body 10 is used for loading passengers; the sensor 14 is used for acquiring motion data of the vehicle body (10) or motion data of a part of the vehicle body 10, and the sensor 14 is fixed on the bracket 1.

Preferably, the method further comprises the following steps: a three-dimensional virtual space comprising a three-dimensional virtual scene model 17 and a three-dimensional virtual camera 19, said three-dimensional virtual camera 19 comprising a coordinate channel and a direction channel; the motion data of the vehicle body 10 includes coordinate data 32 and direction data 33 of the vehicle body 10, the coordinate channel is used for inputting the coordinate data 32, the direction channel is used for inputting the direction data 33, the coordinate data 32 is used for determining the position of the three-dimensional virtual camera in the three-dimensional virtual space, and the direction data 33 is used for determining the orientation of the three-dimensional virtual camera in the three-dimensional virtual space; the image of the three-dimensional virtual scene model 17 captured by the three-dimensional camera is displayed on the transparent display panel 3.

Preferably, the method further comprises the following steps: a video image and a video player 25, wherein the video player 25 is used for playing the video image, the video image is a sequence image 35, the vehicle body 10 runs on a track 34, the motion data of the corresponding part of the vehicle body 10 is used for determining a value 42 of an absolute distance, and the absolute distance traveled by the vehicle body (10) and an absolute frame number 43 of the sequence image played by the player 25 have the following corresponding relationship: s1 ÷ S2 ═ S1 ÷ S2 ', where S1 is the total number of frames of the sequence image 35, S2 is the total course of the trajectory 34, S1 ' is the absolute number of frames of the sequence image currently played by the video player 25, and S2 ' is the value of the absolute course currently traveled by the vehicle body 10.

Preferably, the method further comprises the following steps: the power device further comprises a motor 8 and a rotator 2, wherein the motor 8 is used for driving the rotator 2, and the rotator 2 is used for driving a driver 12.

Preferably, the method further comprises the following steps: the stereoscopic glasses comprise liquid crystal light valve stereoscopic glasses or polarization stereoscopic glasses, and the transparent display panel 3 comprises an OLED transparent display screen or a transparent projection display screen.

Preferably, the method further comprises the following steps: the display 28 is a stereoscopic display.

The utility model has the advantages that:

(1) the utility model discloses not only realized that the transparency of first transparent display screen 21 (for example oled transparent display screen or transparent projection curtain) can carry out gradual change freely between transparent and opaque to when watching the image that shows on first transparent display screen 21 through first transparent display screen 21 under the environment of hi-lite (for example outdoor environment), transparent stack image contrast and the definition of this transparent image picture can show the improvement.

(2) The utility model discloses can not only realize above-mentioned beneficial effect (1), can also realize the automobile body 10 at the in-process that traveles simultaneously, the motion of automobile body 10 corresponds in step with the first virtual image 20 that first transparent display screen 21 shows to make observer 9 obtain the active and the active mutually unified immersive experience of health of vision (sit the active on automobile body 10 and watch the whole body of emulation that the active image on the transparent display screen produced and experience the sense).

(3) Through setting up unique three-dimensional display interaction device (for example, light valve stereoscopic glasses, initiative stereoscopic display screen, the alternative signal transmitter that weares of picture, gesture mutual sensor, intelligent camera), the utility model discloses can not only realize above-mentioned beneficial effect (1), the virtual image that can also make first transparent display screen 21 show simultaneously realizes transparent stereoeffect, makes observer 9 obtain unique immersive visual experience (including mixed reality's stereovision effect).

(4) By setting the video player 25 and the image content shot in the real scene, the present invention not only can achieve the above-mentioned beneficial effect (1), but also can correspondingly control the playing sequence frame number of the video image (the video image shot in the real scene) displayed on the second transparent display screen 30 through the traveling distance data of the vehicle body 10, so that the observer 9 can feel that the motion state of the vehicle body 10 is consistent with the motion state of the image lens shot in the real scene displayed on the corresponding second transparent display screen 30, and the observer 9 can also obtain the immersive experience that the visual sensation and the body sensation are unified with each other. The played video image only needs live-action shooting and does not need to be made through three-dimensional CG, so that the time for making the image content (played on the first transparent display screen 21) is saved, and the making cost of the image content is saved.

Above unique beneficial effect makes the utility model discloses show, travel, science popularization education, mixed reality (or augmented reality) or trades such as mobile unit have wide application prospect.

Drawings

Fig. 1 is a schematic front structural diagram of embodiment 1 of the present invention, which includes 1 dimming controller 22 and 1 first transparent display screen 21;

fig. 2 is a schematic side view of embodiment 1 of the present invention, which includes 1 dimming controller 22 and 1 first transparent display 21, viewed by the viewer 9;

fig. 3 is a schematic side view of embodiment 1 of the present invention including a vehicle body 10 and a first transparent display screen 21;

fig. 4 is a schematic side view of embodiment 1 of the present invention including a first transparent display 21 and a dimming controller 22 of a vehicle body 10;

FIG. 5 is a schematic view of the flow structure of embodiment 1 of the present invention;

fig. 6 is a schematic view of the flow structure of embodiment 2 of the present invention;

fig. 7 is a schematic side view of a general first transparent display 21 (general transparent display) of the present invention viewed by a viewer 9;

fig. 8 is a schematic side view of an observer 9 who views a transflective plate 29 and a dimming controller 22 according to embodiment 2 of the present invention;

fig. 9 is a schematic diagram of an absolute distance of embodiment 2 of the present invention;

fig. 10 is a schematic diagram of the absolute frame number of embodiment 2 of the present invention;

in the figure: 1. the device comprises a bracket, 2, a rotator, 4, a polarizer, 5, an analyzer, 6, light emitted by a background object 7, 7 and the background object; 8. motor, 9, observer, 10, vehicle body, 11, eye gaze, 12, actuator, 14, sensor, 17, three-dimensional virtual scene model, 18, three-dimensional virtual engine, 19, three-dimensional virtual camera, 20, first virtual image, 21, first transparent display screen, 22, dimming controller, 25, video player, 26, second virtual image, 27, window frame, 28, display screen, 29, transparent reflective plate, 30, second transparent display screen, 31, screen image, 32, coordinate data, 33, direction data, 34, vehicle travel trajectory, 35, sequence image, 36, time axis, 37, first sequence image (first sequence image), 38, current play sequence image, 39, last sequence image (last sequence image), 40, first position (initial position of trajectory 34), 41, last position (last position of trajectory 34), 42, value of absolute distance, 43. absolute frame number.

The background real object 7 comprises all things visible to the human eyes and also comprises the sky; the driver 12 may be a gear, a transmission belt, or a link for driving.

In the following embodiments, the transparent superimposed image refers to an image formed by superimposing and mixing a transparent image displayed on the first transparent display screen 21 and the background image; the background image refers to all real-scene images or virtual images that can be seen by the sight line 11 through the transparent display surface of the first transparent display screen 21, but does not include the transparent image (e.g., the screen image 31) displayed by the first transparent display screen 21 itself; the 'image' has the same meaning as that expressed by the 'image'.

The following description of specific embodiments of the present invention will be described in further detail with reference to the accompanying drawings.

Detailed Description

The following is embodiment 1, and referring to fig. 1, 2, 3 and 4, a vehicle body 10 is an automobile with 12 windows, and the vehicle body 10 includes the following devices thereon: the central processing unit, the sensor 14, the first transparent display screen 21 and the dimming controller 22 electrically connect the above devices; the sensors 14 comprise a coordinate positioning sensor (Beidou locator or gps locator), an angle sensor (e.g. gyroscope); the number of the first transparent display screens 21 is 12, each first transparent display screen 21 is correspondingly fixed at a suitable position of one car window frame 27, the first transparent display screen 21 adopts an AMOLED transparent screen, and the first transparent display screen has a transparent display effect of displaying images and seeing the background real object 7; the dimming controller 22 has 12 sets, each set includes two linear polarized light sheets with the same type, 1 motor, 1 driver 12 (for example, a gear), and 1 rotator 2 (for example, a gear); the two linear polaroids with the same type are respectively a polarizer 4 and an analyzer 5; the motor 8 drives the rotator 2 to rotate, the rotator 2 drives the driver 12, and the driver 12 drives the polarizer 4 to rotate between 0 and 90 degrees; the polarizer 4 is fixedly connected with the driver 12, and the analyzer 5 is fixed on the first transparent display screen 21; each set of dimming controller 22 is correspondingly fixed at a proper position of one vehicle window; referring to fig. 2, the observer 9, the polarizer 4, the analyzer 5, the first transparent display screen 21 and the background real object 7 are arranged in the above order so that a connection line between the eyes of the observer 9 and the background real object 7 can pass through the polarizer 4, the analyzer 5 and the first transparent display screen 21.

Referring to fig. 5, the sensor 14 acquires longitude and latitude coordinate data of real-time traveling of the vehicle body 10 and direction data (angle data) of the vehicle body, and the sensor 14 inputs the longitude and latitude coordinate data and the direction data (angle data) to the central processing unit; the three-dimensional virtual engine 18 includes a three-dimensional virtual scene model 17 (e.g., the scene model is a three-dimensional virtual scene of a lunar base) and a three-dimensional virtual camera 19; aligning the viewfinder of the three-dimensional virtual camera 19 with the three-dimensional virtual scenes of all the shooting lunar bases, and synchronously and correspondingly inputting the acquired longitude and latitude coordinate data and the acquired direction data (angle data) into a coordinate parameter channel and a direction parameter channel of the three-dimensional virtual camera 19 in a three-dimensional virtual engine 18 (such as a fantasy engine) by a central processing unit; outputting a three-dimensional virtual image (a first virtual image 20) captured by the three-dimensional virtual camera 19 to a first transparent display screen 21; the number of the three-dimensional virtual cameras 19 is 12, each three-dimensional virtual camera 19 is correspondingly placed according to the actual positions of 12 windows on the car body, and the picture correspondingly shot by each three-dimensional virtual camera 19 is output to the corresponding first transparent display screen 21. The three-dimensional virtual scene includes a three-dimensional virtual travel route P on which the virtual camera can arbitrarily move. The dimming controller 22 obtains the direction data 33 and the coordinate data 32 from the sensor 14, and the central processing unit confirms the position of the vehicle body 10 and the driving time point according to the direction data 33 and the coordinate data 32, so that the polarizer 4 in the dimming controller 22 is correspondingly rotated, the intensity of the light 6 emitted by the background object 7 is correspondingly changed when the light passes through the polarizer, and finally the light 6 emitted by the background object 7 passes through the first transparent display screen 26 and is emitted to the eyes of the observer 9. The first virtual image 20 displayed by the first transparent display screen 21 is synchronized with the corresponding movement of the vehicle body 10 in the driving process of the vehicle.

According to the malus law (law of variation of intensity of polarized light), the polarizer 4 and the analyzer 5 allow only light vibrating parallel to the polarization direction to pass through while absorbing light vibrating perpendicular to the direction, and therefore, when the polarization direction of the analyzer 23 is perpendicular to the polarization plane of the polarized light, the polarized light cannot pass through and becomes dark behind the analyzer 5. That is, a change in the intensity of transmitted light can be observed by rotating the polarizer 4 or rotating the analyzer 5, so that a change in the shade of the surface color (black) exhibited by the polarizer can be seen.

Referring to fig. 2 and 4, the central processing unit controls the rotation of the motor 8 according to the data obtained by the sensor 14, so as to control the rotation of the polarizer 4, when the included angle between the polarizer 4 and the polarization direction of the analyzer 5 is gradually changed from 0 degree to 90 degrees, when the observer 9 on the vehicle views the real background object 7 outside the vehicle body 10 through the corresponding first transparent display screen 21 and the corresponding two polarizing sheets, the brightness of the background image seen by the observer 9 on the first transparent display screen 21 is gradually reduced (gradually darkened and changed to black), and finally the observer 9 cannot see the real background object 7 and only sees the dark polarizer, at this time, the contrast of the transparent superimposed image seen by the observer 9 is the highest, and the image displayed by the first transparent display screen 21 has the highest definition. The background image refers to all real-scene images or virtual images that the sight line 11 can see through the transparent display surface of the first transparent display screen 21, but does not include the first virtual image 20 displayed on the first transparent display screen 21 itself.

The included angle between the polarization directions of the polarizer 4 and the analyzer 5 is changed into 45 degrees, according to the Malus law, the intensity of light passing through is weakened, the observer 9 still sees the background real object 7 outside the car, and simultaneously can see the first virtual image 20 displayed on the first transparent display screen 21 (at this time, the polarizer is in a semitransparent state); although the contrast of the first virtual image 20 is weak (the image is slightly gray but can be seen clearly enough), the unique visual effect of the image mixed by the first virtual image 20 and the outside-window real scene (i.e. the transparent superimposed image) can be seen; through increasing intelligent camera, gesture interaction sensor and stereo equipment, different buildings or other relevant objects outside the distinguishable door window of intelligent camera feed back the signal of discerning to central processing unit, make the virtual content that corresponds show on the first transparent display screen 21 of this translucent state, can realize interactive three-dimensional mixed reality (or augmented reality) effect.

When the automobile runs to a certain position of the line P, the central processing unit controls a motor 8 to enable a polarization included angle between a polarizer 4 and an analyzer 5 to be 0 degree, the polarizer becomes transparent, the light intensity of the light passing through the polarizer is strongest, and at the moment, an observer 9 can see a real scene (such as a background real object 7) outside a window; when the automobile runs to another position, the central processing unit starts the motor 8 to rotate the polarizer 4, the polarization included angle between the polarizer 4 and the analyzer 5 is gradually changed from 0 degree to 90 degrees, the polarizer is almost completely opaque and displays dark black, the contrast of the transparent superposed image seen by the observer 9 is the highest, the observer 9 cannot see the real scene (such as the background real object 7) outside the automobile window at the moment, and the process enables the observer 9 to obtain the immersion experience of gradually changing and transitioning from the real world (the real scene outside the automobile window) to the three-dimensional virtual world (the three-dimensional virtual image displayed on the transparent screen 21, namely the moon base) on the automobile (the automobile body 10) which actually moves.

The following is an embodiment 2, which is an improvement on the basis of the embodiment 1, and referring to fig. 8, the first transparent display screen 21 is replaced by a second transparent display screen 30, the vehicle body 10 is an automobile with 12 windows, and the vehicle body 10 comprises the following devices thereon: the central processor, the sensor 14, the video player 25, the second transparent display screen 30, the display screen 28 and the dimming controller 22; the sensor 14 is a speed encoder for calculating the frequency of wheel rotation, and further calculating the absolute distance S2' traveled by the vehicle body 10; the second transparent display screen 30 comprises 1 transparent reflecting plate 29 and 1 display screen 28, the number of the second transparent display screens 30 is 12, each set of the second transparent display screens 30 is correspondingly fixed on a proper position of a vehicle window, and the display screen 28 is a three-dimensional liquid crystal display screen; the dimming controller 22 has 12 sets, each set includes two linear polarized light sheets with the same type, 1 motor, 1 driver 12 (for example, a gear), and 1 rotator 2 (for example, a gear); the two linear polaroids with the same type are respectively a polarizer 4 and an analyzer 5; the motor drives the rotator 2 to rotate, the rotator 2 drives the driver 12, and the driver 12 drives the polarizer 4 to rotate between 0 and 90 degrees; the polarizer 4 is fixedly connected with the actuator 12, and the analyzer 5 is fixed on the transparent reflecting plate 29 of the second transparent display screen 30; each set of dimming controller 22 is correspondingly fixed at a proper position of a vehicle window frame 27; referring to fig. 8, the positions are set in the following order: viewer 9, transparent reflector 29, analyzer 5, polarizer 4, and background object 7.

Referring to fig. 6, 9 and 10, the video player 25 is configured to play a second virtual image 26, where the second virtual image 26 is a video image captured by the camera D moving on a certain track a in a scene C (real scene), the video image is a set of sequence images 35, the sequence images 35 include a plurality of frame images, each frame image is arranged in sequence, and the sequence images 35 are the second virtual image 26 and are displayed on the display screen 28; placing the automobile on a preselected site for driving, wherein the site comprises a track 34, the track A and the track 34 have the same shape and the same path, the total path of the track 34 is S2, and the automobile body 10 drives in a forward or reverse mode from the initial position 40 to the final position 41; the video player 25 comprises sequence images 35 and a time axis 36, the total number of frames of the sequence images 35 is S1, the time axis 36 indicates a sequence diagram 38 pointing to the current playing, the time axis 36 slides back and forth in the sequence diagram from the beginning diagram 37 to the end diagram 39, and when the position where the time axis 36 slides corresponds to a frame sequence diagram, the frame sequence diagram is determined as the current playing sequence diagram 38 and is played instantly; the position of the vehicle body 10 and the position of the time axis 36 have the following corresponding equation relationship: s1 ÷ S2 ═ S1 ÷ S2 ″ - … … (1), in which S1 is the total number of the sequence images (total number of frames), S2 is the total distance of the trajectory 34, S1 ' is the absolute number of frames of the sequence images that the video player 25 has currently played (as in fig. 10, the number of frames played to the right is positive, the number of frames played to the left is negative, the absolute number of frames is the sum of the number of frames played forward and the number of frames played backward), S2 ' is the value of the absolute distance traveled by the vehicle (the distance traveled forward is positive, the distance traveled backward is negative, the absolute distance is the sum of the distance traveled forward and the distance traveled backward), S1 ÷ S1 ÷ S2 × S2 ' … … (2), where S1 and S2 are constants that have traveled before the vehicle (for example, a constant), s1-1200 m, S2-3600 m), the cpu obtains the value 42 of the absolute distance from the sensor 14, inputs the absolute distance S2 ' (e.g., S2 ' -300 m) currently traveled by the vehicle to the player 25, determines the number 43 of the absolute frames currently played by the player 25 (e.g., S1 ' -900 frames) according to equation (2), thereby determining the frame of images currently played by the player 25 (i.e., the sequence image of the 900 th frame is currently played in the playing sequence diagram 38), the second virtual image 26 includes all the sequence images to be played by the camera, the second virtual image 26 is displayed by the second transparent display 30, and finally the second virtual image 26 is projected to the eye of the observer 9.

The central processing unit obtains the value 42 of the absolute distance from the sensor 14, confirms the position of the vehicle body 10 according to the value 42 of the absolute distance, and correspondingly rotates the polarizer 4 in the dimming controller 22, so that the intensity of the light 6 emitted by the background object 7 is correspondingly changed when the light passes through the polarizer, and finally the light 6 emitted by the background object 7 passes through the second transparent display screen 30 and is emitted to the eyes of an observer 9.

The light (the second virtual image 26) emitted by the second transparent display 30 and the light emitted by the light modulator 22 are superimposed and mixed to enter the eyes of the observer 9.

As shown in fig. 9, when the vehicle has not yet reached the predetermined route (trace 34). The central processor adjusts the included angle of the polarized light of the polarizer 4 and the analyzer 5 to be 0 degree through the motor 8, the intensity of the light passing through is the weakest (close to 0, black), the background image behind the transparent reflecting plate 29 of the second transparent display screen 30 can be changed into transparent, and at the moment, an observer 9 can see the outside real scene; when the automobile is just before the automobile reaches the predetermined route (track B) (for example, within the first 3 seconds), the central processing unit sends a corresponding command according to the value 42 of the corresponding absolute distance, so that the motor 8 (motor) drives the rotator 2 (for example, a gear), the rotator 2 rotates the polarizer 4 again, the polarization included angle between the polarizer 4 and the analyzer 5 is gradually changed from 0 degree to 90 degrees, the background image behind the transparent reflection plate 29 of the second transparent display screen 30 can be gradually changed into an opaque dark black image, the contrast of the transparent superposed image seen by the observer 9 is the highest, and the definition of the second virtual image 26 is the highest. The observer 9 is enabled to obtain a unique immersive experience of a gradual transition from a real scene (an out-of-window real scene) to another scene (a scene already captured in the video) on the real moving car.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (8)

1. A controllable dimming display system comprises a bracket (1) and a first transparent display screen (21), wherein the first transparent display screen (21) is used for displaying a corresponding image to an observer (9) through the first transparent display screen (21), and the corresponding image is formed by taking the first transparent display screen (21) as a specific imaging carrier; it is characterized by comprising: a polarizer and a power device, wherein the polarizer comprises a polarizer (4) and an analyzer (5), the polarizer (4) is used for enabling the light passing through the polarizer (4) to become polarized light, the vibration direction of the polarized light is consistent with the polarization direction of the polarizer (4), the analyzer (5) is used for receiving the light passing through the polarizer (4), and the power device comprises an actuator (12), and the actuator (12) is used for enabling the polarizer (4) or the analyzer (5) to rotate; the bracket (1) is connected with the power device, and the polarizer (4) or the analyzer (5) is connected with the driver (12); the polarizer is positioned between the first transparent display screen (21) and a background real object (7); the polarizer and the first transparent display screen (21) are located between the viewer (9) and a background real object (7).

2. A controllable dimming display system according to claim 1, further comprising a vehicle body (10), a sensor (14), the stand (1) comprising a vehicle body (10), the vehicle body (10) being used for carrying passengers; the sensor (14) is used for acquiring motion data of the vehicle body (10) or motion data of a corresponding part of the vehicle body (10), and the sensor (14) is fixed on the bracket (1).

3. A controllable dimming display system as claimed in claim 2, further comprising: a three-dimensional virtual space comprising a three-dimensional virtual scene model (17) and a three-dimensional virtual camera (19), the three-dimensional virtual camera (19) comprising a coordinate channel and a direction channel; -the motion data of the vehicle body (10) comprises coordinate data (32) and direction data (33) of the vehicle body (10), the coordinate channel being used for inputting the coordinate data (32), the direction channel being used for inputting the direction data (33), the coordinate data (32) being used for determining the position of the three-dimensional virtual camera (19) in the three-dimensional virtual space, the direction data (33) being used for determining the orientation of the three-dimensional virtual camera (19) in the three-dimensional virtual space; the image of the three-dimensional virtual scene model (17) shot by the three-dimensional virtual camera (19) is displayed on the first transparent display screen (21).

4. A controllable dimming display system as claimed in claim 2, further comprising: a video image and a video player (25), wherein the video player (25) is used for playing the video image, the video image is a sequence image (35), the vehicle body (10) runs on a track (34), the motion data of the corresponding part of the vehicle body (10) is used for determining the value (42) of the absolute distance, and the absolute distance that the vehicle body (10) runs and the absolute frame number (43) of the sequence image played by the player (25) have the following corresponding relationship: s1 ÷ S2 ═ S1 ÷ S2 ', wherein S1 is the total frame number of the sequence image (35), S2 is the total route of the track (34), S1 ' is the absolute frame number of the sequence image currently played by the video player (25), and S2 ' is the value of the absolute route currently traveled by the vehicle body (10).

5. A controllable dimming display system as claimed in claim 1, 2, 3 or 4, further characterized by: the power device further comprises a motor (8) and a rotator (2), wherein the motor (8) is used for driving the rotator (2), and the rotator (2) is used for driving a driver (12).

6. A controllably dimmable display system according to claim 1, 2, 3 or 4, further comprising said first transparent display (21) comprising a transparent reflective plate (29) and a display (28), said transparent reflective plate (29) being adapted to reflect an image displayed on said display (28), said display (28) being adapted to display a second virtual image (26) on the other side with said transparent reflective plate (29) as a reflective axis.

7. A controllable dimming display system according to claim 1, 2, 3 or 4, further comprising stereoscopic glasses comprising liquid crystal light valve stereoscopic glasses or polarized stereoscopic glasses, wherein the first transparent display (21) comprises an OLED transparent display or a transparent projection display.

8. A dimmable display system according to claim 6, further comprising: the stereoscopic glasses comprise liquid crystal light valve stereoscopic glasses or polarization stereoscopic glasses, and the display screen (28) is a stereoscopic display screen.

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