Method and device for adjusting three-dimensional display visual angle, equipment, medium and program product

Abstract

The invention relates to the technical field of three-dimensional display, and discloses a three-dimensional display visual angle adjusting method, device and equipment, a medium and a program product, the method acts on a liquid cylindrical lens, and comprises the following steps: determining a current applied signal according to an expected visual angle range, so as to generate a driving force based on the current applied signal, enabling the liquid cylindrical lens to deform based on the driving force so as to change the curvature radius; and after the curvature radius of the liquid cylindrical lens is changed, the light beam emitted by the display is controlled to penetrate through the liquid cylindrical lens and is refracted, so that the actual visual angle range of three-dimensional display reaches the expected visual angle range. The curvature radius of the liquid cylindrical lens is changed by applying a signal, and light beams emitted by a display can be refracted at different transmission angles, so that the optimal viewing angle range of an observer is enlarged, the flexibility of a three-dimensional display viewing angle is improved, and the viewing experience is improved.

Description

Technical Field

[0001] The present invention relates to the field of three-dimensional display technology, and in particular to a method, device, equipment, medium and program product for adjusting a three-dimensional display viewing angle. Background Art

[0002] Three-dimensional (3D) display, as a mature display technology, provides a stereoscopic visual experience. There is a huge demand for it and it is a key trend in future displays. Currently commercialized glasses-free 3D displays are based on the principle of parallax, using the human eye to receive different images from the left and right eyes. The brain then superimposes and fuses the two images to create a three-dimensional image. The mainstream technology is cylindrical lens grating technology. Because cylindrical lenses do not block backlight, image brightness is well maintained. Therefore, cylindrical lens glasses-free 3D technology has broad application prospects.

[0003] However, the current cylindrical lens naked-eye 3D technology has a fixed viewing angle range, and viewers need to watch within a certain angle range to experience stereoscopic vision, which limits the viewing experience. Summary of the Invention

[0004] In view of this, the present invention provides a method, apparatus, device, medium and program product for adjusting the viewing angle of a three-dimensional display, so as to solve the problem that the viewing angle range of a three-dimensional display is fixed and limited.

[0005] In a first aspect, the present invention provides a method for adjusting a three-dimensional display viewing angle, which acts on a liquid cylindrical lens, and the method comprises:

[0006] Determining a current applied signal according to an expected viewing angle range, generating a driving force based on the current applied signal, causing the liquid cylindrical lens to deform based on the driving force and change the curvature radius;

[0007] When the liquid cylindrical lens changes its curvature radius, the light beam emitted by the display is controlled to penetrate the liquid cylindrical lens and refract, so that the actual viewing angle range of the three-dimensional display reaches the expected viewing angle range.

[0008] The present invention provides a method for adjusting the viewing angle of a three-dimensional display. By applying a signal to a liquid lenticular lens, the lens deforms under the influence of the generated driving force, changing its radius of curvature. This method then controls the light beam emitted by the display to pass through the liquid lenticular lens and refract it, ensuring that the actual viewing angle range of the three-dimensional display reaches the desired viewing angle range. By applying a signal to change the curvature radius of the liquid lenticular lens, the present invention can refract the light beam emitted by the display at different transmission angles, thereby increasing the optimal viewing angle range for the observer, improving the flexibility of the three-dimensional display viewing angle, and enhancing the viewing experience.

[0009] In an optional embodiment, before determining the current applied signal according to the expected viewing angle range to generate a driving force based on the current applied signal so that the liquid column lens deforms based on the driving force and changes the curvature radius, it also includes: adjusting the actual applied signal according to a preset step size to generate a driving force based on the actual applied signal so that the actual curvature radius of the liquid column lens changes; determining the actual transmission angle of the light beam after the actual curvature radius changes; and constructing a first mapping relationship based on the actual applied signal and the actual transmission angle.

[0010] By constructing a mapping relationship between applied signals and transmission angles according to actual calibration, the present invention can take into account the influence of actual processing and assembly when adjusting the three-dimensional display viewing angle range in the later stage, thereby ensuring that the actual situation is consistent with the design parameters.

[0011] In an optional implementation, when constructing a mapping relationship based on the actual applied signal and the actual transmission angle, the method further includes: acquiring the actual temperature, and constructing a second mapping relationship based on the actual temperature and the first mapping relationship.

[0012] By constructing a mapping relationship between temperature, applied signal and transmission angle according to the actual temperature, the present invention can take into account the influence of the actual external environment when adjusting the three-dimensional display viewing angle range in the later stage, and further ensure that the actual situation is consistent with the design parameters.

[0013] In an optional embodiment, determining the current applied signal based on the expected viewing angle range includes: determining the target transmission angle based on the expected viewing angle range; obtaining the current temperature and the second mapping relationship, and determining the current applied signal based on the current temperature, the target transmission angle and the second mapping relationship.

[0014] The present invention determines the signal that needs to be applied currently according to the expected viewing angle range and a pre-calibrated mapping relationship, thereby ensuring that the expected viewing angle range is achieved by applying the signal, thereby improving the accuracy and reliability of three-dimensional display viewing angle adjustment.

[0015] In an optional embodiment, the display is divided into different pixel display units, each pixel display unit includes a left pixel and a right pixel, the liquid column lens corresponds to the pixel display unit of the display, and the light beam emitted by the display is controlled to penetrate the liquid column lens and refract, including: obtaining a resolution mode, the resolution mode includes: a high-resolution mode and a conventional resolution mode; if it is the conventional resolution mode, the left pixel in the pixel display unit is controlled to emit a first light beam, and the right pixel in the pixel display unit is controlled to emit a second light beam, so that the first light beam and the second light beam penetrate the liquid column lens at the same time and undergo a first refraction and a second refraction; if it is the high-resolution mode, the left pixel and the right pixel in the pixel display unit are controlled to emit a first light beam at the same time, and emit a second light beam at the same time after a preset time interval, so that the first light beam and the second light beam successively penetrate the liquid column lens and undergo a first refraction and a second refraction.

[0016] The present invention can realize the switching between high resolution and conventional resolution of three-dimensional display by controlling the light beam emitted by the display screen, thereby satisfying the different viewing experiences of viewers.

[0017] In an optional embodiment, after determining the current applied signal according to the expected viewing angle range, it also includes: monitoring the current applied signal to obtain the actual applied signal; comparing the current applied signal with the actual applied signal, and generating a prompt message if they are inconsistent.

[0018] By monitoring the applied signal, the present invention can promptly prompt when the required signal is not reached. Operators or technicians can make adjustments or repairs based on the prompts, thereby ensuring that the three-dimensional display can reach the expected viewing angle range and improving the reliability of the three-dimensional display.

[0019] In a second aspect, the present invention provides a device for adjusting a three-dimensional display viewing angle, which acts on a liquid cylindrical lens, and comprises:

[0020] a curvature radius adjustment module, configured to determine a current applied signal according to an expected viewing angle range, and generate a driving force based on the current applied signal, so that the liquid cylindrical lens deforms based on the driving force to change the curvature radius;

[0021] The viewing angle range adjustment module is used to control the light beam emitted by the display to penetrate the liquid cylindrical lens and refract when the liquid cylindrical lens changes its curvature radius, so that the actual viewing angle range of the three-dimensional display reaches the expected viewing angle range.

[0022] In a third aspect, the present invention provides a computer device comprising: a memory and a processor, the memory and the processor being communicatively connected to each other, the memory storing computer instructions, and the processor executing the computer instructions to thereby execute the three-dimensional display viewing angle adjustment method of the above-mentioned first aspect or any corresponding embodiment thereof.

[0023] In a fourth aspect, the present invention provides a computer-readable storage medium having computer instructions stored thereon, the computer instructions being used to enable a computer to execute the method for adjusting the three-dimensional display viewing angle of the above-mentioned first aspect or any corresponding embodiment thereof.

[0024] In a fifth aspect, the present invention provides a computer program product comprising computer instructions for causing a computer to execute the method for adjusting the three-dimensional display viewing angle according to the first aspect or any corresponding embodiment thereof. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the specific embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0026] Figure 1 is a flow chart of a method for adjusting a three-dimensional display viewing angle according to an embodiment of the present invention;

[0027] Figure 2 is a schematic diagram of a 3D display principle of a method for adjusting a 3D display viewing angle according to an embodiment of the present invention;

[0028] Figure 3 is a schematic diagram of a cylindrical lens grating and a focusing effect according to a method for adjusting a three-dimensional display viewing angle according to an embodiment of the present invention;

[0029] Figure 4 2 is a schematic diagram of the optical principle of a cylindrical lens unit according to a method for adjusting a three-dimensional display viewing angle according to an embodiment of the present invention;

[0030] Figure 5 2 is a schematic diagram of the optical path of a cylindrical lens unit according to a method for adjusting a three-dimensional display viewing angle according to an embodiment of the present invention;

[0031] Figure 6 3. This is a schematic diagram of the principle of changing the curvature radius of a liquid cylindrical lens according to a method for adjusting the viewing angle of a three-dimensional display according to an embodiment of the present invention;

[0032] Figure 7 is a flow chart of another method for adjusting a three-dimensional display viewing angle according to an embodiment of the present invention;

[0033] Figure 8 is a system flow diagram of another method for adjusting a three-dimensional display viewing angle according to an embodiment of the present invention;

[0034] Figure 9 is a flow chart of another method for adjusting a three-dimensional display viewing angle according to an embodiment of the present invention;

[0035] Figure 10 is a structural block diagram of a device for adjusting a three-dimensional display viewing angle according to an embodiment of the present invention;

[0036] Figure 11 Schematic diagram of the hardware structure of a computer device according to an embodiment of the present invention. DETAILED DESCRIPTION

[0037] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making creative efforts shall fall within the scope of protection of the present invention.

[0038] The present invention is applicable to scenarios where lenticular lens naked-eye 3D display technology is used for three-dimensional display. The present invention provides a method for adjusting the viewing angle of a three-dimensional display. By applying a signal to a liquid lenticular lens, the curvature radius of the liquid lenticular lens is changed to increase the optimal viewing angle for the observer. The following terms are explained:

[0039] 3D display: Through a specific method, the picture becomes three-dimensional and realistic. The image is no longer limited to the plane of the screen, but seems to be able to walk outside the screen, giving the audience an immersive feeling.

[0040] Naked-eye 3D technology: a technology that allows users to watch 3D content without wearing any auxiliary equipment;

[0041] Binocular parallax: The human eyes are approximately 53 to 73 mm apart in the horizontal direction. Due to the distance between the left and right eyes, the image positions of the same object in the scene on the retinas of the left and right eyes will be slightly different. This difference in image position on the retina is called binocular parallax.

[0042] Liquid lens: An optical element that uses liquid as the lens medium. The focal length of the lens is dynamically adjusted by changing the curvature radius or shape of the liquid.

[0043] According to an embodiment of the present invention, an embodiment of a method for adjusting a three-dimensional display viewing angle is provided. It should be noted that the steps shown in the flowchart of the accompanying drawings can be executed in a computer system such as a set of computer-executable instructions, and although a logical order is shown in the flowchart, in some cases, the steps shown or described can be executed in an order different from that shown here.

[0044] In this embodiment, a method for adjusting the viewing angle of a three-dimensional display is provided, which can be used in a three-dimensional display system and acts on a liquid cylindrical lens in the three-dimensional display system. Figure 1 FIG. 1 is a flow chart of a method for adjusting a three-dimensional display viewing angle according to an embodiment of the present invention. Figure 1 As shown, the process includes the following steps:

[0045] Step S101 : determining a current applied signal according to an expected viewing angle range, generating a driving force based on the current applied signal, and causing the liquid cylindrical lens to deform based on the driving force to change the curvature radius.

[0046] Specifically, in the embodiment of the present invention, the cylindrical lens naked eye 3D display technology, also known as the cylindrical lens grating 3D display technology, utilizes the refraction of light by the cylindrical lens array to project the parallax image on the display screen to the corresponding viewing areas of the left and right eyes, respectively, so that the viewer's left and right eyes see different parallax images, thereby forming a stereoscopic vision. Figure 2 As shown, in a three-dimensional display system, the image plane of the display screen is on the focal plane of the cylindrical lens; each cylindrical lens of the cylindrical lens grating corresponds to two pixels below, namely pixel L (left pixel, displaying the left eye disparity map) and pixel R (right pixel, displaying the right eye disparity map), which are arranged alternately on the display to form a view partition. In this embodiment of the present invention, the pixel L and pixel R corresponding to the same cylindrical lens are used as pixel display units; Figure 3 As shown, the cylindrical lens grating contains multiple cylindrical lenses, which do not focus light in the vertical direction parallel to the cylindrical axis, but focus light in the horizontal direction perpendicular to the cylindrical axis. That is, each cylindrical lens unit is equivalent to a converging lens, so Figure 2 The cylindrical lens with a certain curvature radius focuses the light emitted by each pixel in different directions, refracts the parallax image of pixel L and sends it to the left eye, and refracts the parallax image of pixel R and sends it to the right eye. Finally, it is received by the human eye and fused by the brain to form stereoscopic vision.

[0047] In some optional embodiments, such as Figure 4 The optical principle of the cylindrical lens unit shown in the figure, the main parameters of a single cylindrical lens unit include thickness d, curvature radius r, pitch P, and refractive index n. A coordinate system is established with the cylindrical lens optical axis OO' as the y-axis, and the optical principle is converted into Figure 5 The geometric principle shown. If the viewing distance is y, then according to the imaging formula of the single spherical refraction system, we can get:

[0048]

[0049] Among them, the viewing distance y is much greater than the thickness of the cylindrical lens, y>>d, at least 3 orders of magnitude different, so 1 / (yd) tends to 0. Therefore, by transforming the above formula, we can get:

[0050]

[0051] Secondly, according to the calculation formula of the focal length of the cylindrical lens It can be seen that f = d. Furthermore, the light beam passing through the cylindrical lens at point O is emitted parallel to the optical axis after passing through the cylindrical lens, with a transmission direction of 0°. For points where x is not equal to 0, the light beam is refracted in a certain direction after passing through the cylindrical lens, and the corresponding transmission direction is α. The following trigonometric formula can be constructed:

[0052]

[0053] Therefore, according to the formula for calculating the focal length of the cylindrical lens Available and Substituting f=d into the above trigonometric formula, we can get:

[0054]

[0055] According to the above formula, it can be deduced that, with the optical axis OO' as the center line, a light beam passing through the point x>0 is refracted and turned toward the negative x-axis after passing through the cylindrical lens; a light beam passing through the point x<0 is refracted and turned toward the positive x-axis after passing through the cylindrical lens, and the cylindrical lens plays an image splitting role. Moreover, when other conditions remain unchanged, the modulation of the direction of light by the cylindrical lens is determined by the refractive index n, focal length f, and light-emitting point position x of the cylindrical lens. The light-emitting point position cannot be freely adjusted due to the physical characteristics of the display screen, and the refractive index of the cylindrical lens is also fixed. Therefore, the embodiment of the present invention adopts a method of changing the focal length f of the cylindrical lens to change the transmission direction of light. When the transmission direction of light changes, the viewing angle range of the three-dimensional display changes accordingly. The focal length f can be achieved by adjusting the curvature radius r of the cylindrical lens.

[0056] In an optional embodiment, in order to be able to adjust the focal length f of the cylindrical lens, the embodiment of the present invention uses a liquid cylindrical lens. The liquid cylindrical lens is filled with a liquid material that meets certain optical properties. The upper surface of each cylindrical lens unit is sealed with a film layer to seal the internal liquid, the two sides are sealed, and the bottom is made of a transparent material. Then, the liquid cylindrical lens is deformed by an external force, that is, the curvature radius r changes, and the focal length f changes. Among them, the external force-driven deformation of the liquid cylindrical lens includes MEMS (Micro Electro Mechanical Systems) electrostatic drive method, memory alloy SMA (Shape Memory Alloy) drive method, piezoelectric drive method, electromagnetic force drive method, etc., which are only used as examples and are not limited to them. Each method has a corresponding applied signal. Its essence is to generate a force by applying a signal, thereby deforming the liquid cylindrical lens and changing the curvature radius. Among them, the MEMS electrostatic drive method is based on Coulomb force. When a voltage is applied between two electrodes of the MEMS device, an electric field is generated. Due to the difference in charge distribution, an electrostatic force is generated between the two electrodes. For a MEMS structure composed of a movable electrode and a fixed electrode, this electrostatic force can cause the movable electrode to move, rotate or vibrate. For example, in a MEMS device with a parallel plate capacitor structure, the upper and lower plates are fixed and movable parts respectively. When voltage is applied, the movable plate will move closer to the fixed plate under the action of electrostatic force; the memory alloy driving method utilizes the phenomenon that shape memory alloy can undergo plastic deformation at low temperatures and return to its pre-set shape when heated to a certain temperature (phase transition temperature) or above. The shape memory alloy is made into a cylindrical lens structure, and its state change is controlled by heating or cooling to generate a driving force to achieve driving action; the piezoelectric driving method utilizes the inverse piezoelectric effect (when an electric field is applied in the polarization direction of the dielectric, these dielectrics will deform. When the electric field disappears, the deformation of the dielectric also disappears). By applying a voltage of a certain frequency and amplitude to the piezoelectric material, it causes precise deformation, thereby achieving the driving function; the electromagnetic force driving method is based on the law of electromagnetic induction and Ampere's law. When current passes through a conductor, a magnetic field is generated around the conductor, and the current-carrying conductor in the magnetic field is affected by the electromagnetic force, thereby generating a driving force.

[0057] In some optional implementations, taking the MEMS electrostatic drive method as an example, the applied signal is a voltage and the generated driving force is an electrostatic attraction. Figure 6 As shown, there are flat electrodes on both sides of the liquid cylindrical lens, and they are connected to voltage, with positive and negative voltage differences. When no voltage is applied, as shown in Figure 6The initial state is shown in (a); when voltage is applied, the two ends of the capacitor formed by the parallel plates will carry charges of opposite polarity between the plates, and generate electrostatic attraction. The upper plate will exert a downward force on the liquid cylindrical lens (electrostatic attraction F e ), so that the internal liquid gathers to the middle, making the surface of the cylindrical lens more convex, such as Figure 6 As shown in (b), the curvature radius of the liquid cylindrical lens becomes smaller; when the applied voltage decreases until it disappears, the liquid cylindrical lens returns to its initial state.

[0058] In some optional embodiments, parallel plate electrostatic drive utilizes the electrostatic force between parallel plate capacitors to achieve drive. Its principle is based on Coulomb's law. When a voltage is applied across a capacitor formed by parallel plates, charges of opposite polarity are carried between the plates, generating an electrostatic attraction. Wherein, the capacitance of the parallel plate capacitor is C:

[0059]

[0060] Among them, ε r is the relative dielectric constant of the liquid material (dielectric material) in the liquid cylindrical lens, ε0 is the dielectric constant in vacuum, A is the area of the electrode, and D is the distance between the upper and lower electrodes. Therefore, the potential energy W of the two parallel electrodes is as follows:

[0061]

[0062] Where U is the voltage applied to the plates. When the driving voltage U is applied between the plates, the electrostatic attraction F e for:

[0063]

[0064] It can be seen that the electrostatic attraction F e It is proportional to the width and length of the movable plate (i.e., area A), inversely proportional to the square of the distance D between the two plates, and proportional to the square of the driving voltage U. With other conditions unchanged, the embodiment of the present invention can control the electrostatic attraction force F by simply adjusting the voltage U. e ; and the electrostatic attraction F e Changing the curvature radius r of the liquid cylindrical lens is equivalent to indirectly controlling the change of the focal length f of the liquid lens by the voltage U.

[0065] Step S102 : After the curvature radius of the liquid cylindrical lens is changed, the light beam emitted by the display is controlled to penetrate the liquid cylindrical lens and be refracted, so that the actual viewing angle range of the three-dimensional display reaches the expected viewing angle range.

[0066] Specifically, in the embodiment of the present invention, Figure 4As shown, under the control of the three-dimensional display system, the display emits a light beam. When the light beam penetrates the liquid cylindrical lens, it is refracted according to the transmission direction α. According to the calculation formula of the transmission direction α, the transmission direction α of the light beam at different light-emitting point positions x is related to the refractive index n and focal length f of the liquid cylindrical lens. Therefore, when the liquid cylindrical lens deforms due to the driving force and changes the radius of curvature r, thereby changing the focal length f, the transmission direction α of the light beam will also change. When the transmission direction α changes, the viewing angle range of the three-dimensional display also changes. Therefore, the embodiment of the present invention achieves the effect of adjusting the viewing angle range of the three-dimensional display by controlling the applied voltage and thus controlling the light beam transmission angle.

[0067] The present invention provides a method for adjusting the viewing angle of a three-dimensional display. By applying a signal to a liquid lenticular lens, the lens deforms under the influence of the generated driving force, changing its radius of curvature. This method then controls the light beam emitted by the display to pass through the liquid lenticular lens and refract it, ensuring that the actual viewing angle range of the three-dimensional display reaches the desired viewing angle range. By applying a signal to change the curvature radius of the liquid lenticular lens, the present invention can refract the light beam emitted by the display at different transmission angles, thereby increasing the optimal viewing angle range for the observer, improving the flexibility of the three-dimensional display viewing angle, and enhancing the viewing experience.

[0068] In this embodiment, a method for adjusting the viewing angle of a three-dimensional display is provided, which can be used in a three-dimensional display system and acts on a liquid cylindrical lens in the three-dimensional display system. Figure 7 FIG. 1 is a flow chart of a method for adjusting a three-dimensional display viewing angle according to an embodiment of the present invention. Figure 7 As shown, the process includes the following steps:

[0069] Step S701 : determining a current applied signal according to an expected viewing angle range, generating a driving force based on the current applied signal, and causing the liquid cylindrical lens to deform based on the driving force to change the curvature radius.

[0070] Specifically, the above step S701 includes:

[0071] Step S7011: Determine the target transmission angle according to the expected viewing angle range.

[0072] Specifically, in embodiments of the present invention, in actual scenarios, the target transmission angle can be determined based on the desired viewing angle range. In embodiments of the present invention, the 3D display device is pre-calibrated and calibrated, and different transmission angles correspond to different applied signals. Alternatively, in actual operation, a control device such as a knob can be provided to directly change the current applied signal by operating the knob, and the achievable viewing angle range can be determined manually by observation, which is not limited here.

[0073] Step S7012: Acquire the current temperature and the second mapping relationship, and determine the current applied signal according to the current temperature, the target transmission angle, and the second mapping relationship.

[0074] Specifically, in an embodiment of the present invention, a mapping relationship determined after pre-calibration and calibration is obtained. Because the initial value of the light transmission angle α can be known from the design value, but due to tolerances in the processing, production and assembly processes, the actual parameters may deviate from the design, so calibration and calibration are required. The correspondence between the light transmission angle α and the voltage U is not only determined by the corresponding theoretical formula above, but is also affected by the actual processing, assembly and external environment. Therefore, the embodiment of the present invention first establishes a first mapping relationship between the actual applied signal and the actual transmission angle, and then establishes a second mapping relationship between the actual temperature and the first mapping relationship, that is, a mapping relationship between the actual temperature, the actual applied signal and the actual transmission angle.

[0075] In an optional implementation, the above step S7012 includes:

[0076] In step a1, the actual applied signal is adjusted according to a preset step length to generate a driving force based on the actual applied signal, so that the actual curvature radius of the liquid cylindrical lens changes.

[0077] Step a2: determining the actual transmission angle of the light beam after the actual curvature radius changes.

[0078] Step a3: constructing a first mapping relationship according to the actual applied signal and the actual transmission angle.

[0079] Step a4: Acquire the actual temperature, and construct a second mapping relationship based on the actual temperature and the first mapping relationship.

[0080] Specifically, in an embodiment of the present invention, during the calibration and calibration process, the voltage U value is changed in small steps. After the actual applied voltage is applied to the above-mentioned liquid cylindrical lens, the generated electrostatic attraction acts on the liquid cylindrical lens, thereby changing the actual curvature radius of the liquid cylindrical lens. At this time, the corresponding light transmission angle α value is measured, thereby constructing a first mapping relationship between the actual applied signal and the actual transmission angle, and the mapping relationship is stored in the main control chip memory of the three-dimensional display system. The mapping relationship is directly called as needed during actual operation. When calibrating the above-mentioned mapping relationship between α and U, it is also necessary to consider the individual differences, that is, each display unit (cylindrical lens unit + display pixel display unit) needs to be calibrated separately. In addition, it is also necessary to consider the influence of external environmental factors, such as temperature, which is only an example and not limited to this. Therefore, during the calibration and calibration process, calibration is required at different temperatures to construct a second mapping relationship between the actual temperature and the first mapping relationship. In actual application, the current temperature of the environment can be measured by a temperature sensor, and the first mapping relationship at the current temperature can be called based on the second mapping relationship, and then the current applied signal under the target transmission angle can be determined based on the first mapping relationship.

[0081] Step S702: monitor the current applied signal to obtain the actual applied signal; compare the current applied signal with the actual applied signal, and generate a prompt message if they are inconsistent.

[0082] Specifically, in the embodiment of the present invention, Figure 8 As shown, the three-dimensional display system includes a main control chip, a driver chip, a corresponding display, and a column lens grating composed of a liquid column lens, and a monitoring circuit is added. Because the embodiment of the present invention is based on electro-drive to control the change of the curvature radius of the liquid column lens, change the focal length of the liquid column lens, and ultimately change the transmission angle of the light. Because the three-dimensional display system has been calibrated and calibrated in advance, whether the light transmission angle reaches the target transmission angle only needs to monitor the actual applied signal in real time, and feed back the actual applied signal to the main control chip in real time. The main control chip compares the current applied signal with the actual applied signal to determine whether they are consistent. It can be determined that the expected viewing angle range can be achieved. If they are inconsistent, a prompt message is generated. Taking the MEMS electrostatic drive method as an example, the embodiment of the present invention adds a monitoring circuit for monitoring the driving voltage or current in the main control chip driving liquid column lens circuit, which can feed back the real-time situation to the main control chip, thereby realizing monitoring feedback.

[0083] Step S703: After the curvature radius of the liquid cylindrical lens is changed, the light beam emitted by the display is controlled to penetrate the liquid cylindrical lens and refract, so that the actual viewing angle range of the three-dimensional display reaches the expected viewing angle range. Figure 1 Step S102 of the illustrated embodiment will not be described in detail here.

[0084] The present invention provides a method for adjusting the viewing angle of a three-dimensional display. By applying a signal to a liquid lenticular lens, the lens deforms under the influence of the generated driving force, changing its radius of curvature. This method then controls the light beam emitted by the display to pass through the liquid lenticular lens and refract it, ensuring that the actual viewing angle range of the three-dimensional display reaches the desired viewing angle range. By applying a signal to change the curvature radius of the liquid lenticular lens, the present invention can refract the light beam emitted by the display at different transmission angles, thereby increasing the optimal viewing angle range for the observer, improving the flexibility of the three-dimensional display viewing angle, and enhancing the viewing experience.

[0085] In this embodiment, a method for adjusting the viewing angle of a three-dimensional display is provided, which can be used in a three-dimensional display system and acts on a liquid cylindrical lens in the three-dimensional display system. Figure 9 FIG. 1 is a flow chart of a method for adjusting a three-dimensional display viewing angle according to an embodiment of the present invention. Figure 9 As shown, the process includes the following steps:

[0086] Step S901: Determine the current applied signal according to the expected viewing angle range, generate a driving force based on the current applied signal, and cause the liquid cylindrical lens to deform based on the driving force to change the curvature radius. Figure 7 Step S701 of the illustrated embodiment will not be described in detail here.

[0087] Step S902 : After the curvature radius of the liquid cylindrical lens is changed, the light beam emitted by the display is controlled to penetrate the liquid cylindrical lens and be refracted, so that the actual viewing angle range of the three-dimensional display reaches the expected viewing angle range.

[0088] Specifically, the above step S902 includes:

[0089] Step S9021: Acquire a resolution mode, where the resolution mode includes a high-resolution mode and a normal resolution mode.

[0090] Specifically, in an embodiment of the present invention, in actual operation, a resolution mode selection operation can be provided to the user by setting a button or other means, so that the currently required resolution mode is obtained according to the user's selection result, and a rapid switch from a normal resolution to a high-resolution mode is achieved. The resolution modes include: a high-resolution mode and a normal resolution mode.

[0091] Step S9022: If it is a normal resolution mode, control the left pixel in the pixel display unit to emit a first light beam, and at the same time control the right pixel in the pixel display unit to emit a second light beam, so that the first light beam and the second light beam simultaneously penetrate the liquid cylindrical lens and undergo a first refraction and a second refraction.

[0092] Specifically, in the embodiment of the present invention, Figure 2In the display shown, each pixel display unit includes a pixel L and a pixel R. In the normal resolution mode, the left and right parallax images are displayed by the corresponding display pixels, which is equivalent to the resolution received by each eye being (M*N) / 2, where M*N is the display resolution. That is, in the normal resolution mode, the left and right parallax images are displayed simultaneously, are split in space, and are received by the left and right eyes respectively. Figure 4 shown.

[0093] In step S9023, if the high-resolution mode is selected, the left pixel and the right pixel in the pixel display unit are controlled to emit a first light beam simultaneously, and emit a second light beam simultaneously after a preset time interval, so that the first light beam and the second light beam successively penetrate the liquid cylindrical lens and undergo a first refraction and a second refraction.

[0094] Specifically, in an embodiment of the present invention, after switching to high-resolution mode, during the three-dimensional display process, first all pixels of the display are made to display the left eye image, and the cylindrical lens automatically adjusts to transmit and project all light to the left eye; then the mode is switched to make all pixels of the display display the right eye image, and the cylindrical lens automatically adjusts to transmit and project all light to the right eye; the time division multiplexing method is used to control each display time within 1 / 60 second, and due to the principle of persistence of vision of the human eye, the left and right eyes receive two parallax images in an alternating manner, and stereoscopic vision can be generated through fusion by the human brain to achieve a three-dimensional imaging effect; compared with the left and right eyes seeing half of the resolution at the same time, the resolution is increased by 2 times at this time.

[0095] The present invention provides a method for adjusting the viewing angle of a three-dimensional display. By applying a signal to a liquid lenticular lens, the lens deforms under the influence of the generated driving force, changing its radius of curvature. This method then controls the light beam emitted by the display to pass through the liquid lenticular lens and refract it, ensuring that the actual viewing angle range of the three-dimensional display reaches the desired viewing angle range. By applying a signal to change the curvature radius of the liquid lenticular lens, the present invention can refract the light beam emitted by the display at different transmission angles, thereby increasing the optimal viewing angle range for the observer, improving the flexibility of the three-dimensional display viewing angle, and enhancing the viewing experience.

[0096] This embodiment also provides a device for adjusting the viewing angle of a three-dimensional display. This device is used to implement the above-mentioned embodiments and preferred embodiments, and the details already described will not be repeated. As used below, the term "module" may refer to a combination of software and / or hardware that implements a predetermined function. Although the devices described in the following embodiments are preferably implemented in software, implementation using hardware, or a combination of software and hardware, is also possible and contemplated.

[0097] This embodiment provides a device for adjusting a three-dimensional display viewing angle. Figure 10 As shown, including:

[0098] The curvature radius adjustment module 1001 is used to determine the current applied signal according to the expected viewing angle range, and to generate a driving force based on the current applied signal, so that the liquid cylindrical lens is deformed based on the driving force to change the curvature radius.

[0099] The viewing angle range adjustment module 1002 is used to control the light beam emitted by the display to penetrate the liquid cylindrical lens and refract after the curvature radius of the liquid cylindrical lens is changed, so that the actual viewing angle range of the three-dimensional display reaches the expected viewing angle range.

[0100] In some optional embodiments, the device further includes: a calibration module, the calibration module including:

[0101] The applied signal adjustment unit is used to adjust the actual applied signal according to a preset step size, so as to generate a driving force based on the actual applied signal, thereby changing the actual curvature radius of the liquid cylindrical lens.

[0102] The transmission angle determination unit is used to determine the actual transmission angle of the light beam after the actual curvature radius changes.

[0103] The first mapping construction unit is configured to construct a first mapping relationship according to the actual applied signal and the actual transmission angle.

[0104] The second mapping construction unit is configured to obtain the actual temperature and construct a second mapping relationship according to the actual temperature and the first mapping relationship.

[0105] In some optional implementations, the curvature radius adjustment module 1001 includes:

[0106] The transmission angle determination unit is used to determine a target transmission angle according to an expected viewing angle range.

[0107] The applied signal determination unit is used to obtain the current temperature and the second mapping relationship, and determine the current applied signal according to the current temperature, the target transmission angle and the second mapping relationship.

[0108] In some optional embodiments, the display is divided into different pixel display units, each pixel display unit includes a left pixel and a right pixel, the liquid cylindrical lens corresponds to the pixel display unit of the display, and the viewing angle range adjustment module 1002 includes:

[0109] The resolution determining unit is used to obtain a resolution mode, where the resolution mode includes a high-resolution mode and a normal resolution mode.

[0110] The conventional resolution control unit is used to control the left pixel in the pixel display unit to emit a first light beam and the right pixel in the pixel display unit to emit a second light beam if the conventional resolution mode is used, so that the first light beam and the second light beam simultaneously penetrate the liquid cylindrical lens and undergo a first refraction and a second refraction.

[0111] The high-resolution control unit is used to control the left pixel and the right pixel in the pixel display unit to emit a first light beam simultaneously when in high-resolution mode, and to emit a second light beam simultaneously after a preset time interval, so that the first light beam and the second light beam successively penetrate the liquid cylindrical lens and undergo a first refraction and a second refraction.

[0112] In some optional embodiments, the device further includes: a monitoring feedback module for monitoring the current applied signal to obtain an actual applied signal; comparing the current applied signal with the actual applied signal, and generating a prompt message if they are inconsistent.

[0113] The further functional description of each of the above modules and units is the same as that of the above corresponding embodiments and will not be repeated here.

[0114] The three-dimensional display viewing angle adjustment device in this embodiment is presented in the form of a functional unit, where the unit refers to an ASIC (Application Specific Integrated Circuit) circuit, a processor and memory that executes one or more software or fixed programs, and / or other devices that can provide the above functions.

[0115] The embodiment of the present invention also provides a computer device having the above Figure 10 The device for adjusting the three-dimensional display viewing angle is shown.

[0116] See also Figure 11 , Figure 11 is a structural diagram of a computer device provided by an optional embodiment of the present invention, such as Figure 11 As shown, the computer device includes: one or more processors 10, memory 20, and interfaces for connecting various components, including high-speed interfaces and low-speed interfaces. Various components utilize different buses to communicate with each other and can be installed on a common mainboard or installed in other ways as needed. The processor can process the instructions executed in the computer device, including instructions stored in the memory or on the memory to display the graphical information of the GUI on an external input / output device (such as, a display device coupled to the interface). In some optional embodiments, if necessary, multiple processors and / or multiple buses can be used together with multiple memories and multiple memories. Equally, multiple computer devices can be connected, and each device provides part of the necessary operations (for example, as a server array, a group of blade servers, or a multi-processor system). Figure 11 A processor 10 is taken as an example.

[0117] The processor 10 may be a central processing unit, a network processor, or a combination thereof. The processor 10 may further include a hardware chip. The hardware chip may be an application-specific integrated circuit, a programmable logic device, or a combination thereof. The programmable logic device may be a complex programmable logic device, a field programmable gate array, a general purpose array logic, or any combination thereof.

[0118] The memory 20 stores instructions that can be executed by at least one processor 10, so that the at least one processor 10 executes the method shown in the above embodiment.

[0119] The memory 20 may include a program storage area and a data storage area, wherein the program storage area may store an operating system and application programs required for at least one function; the data storage area may store data created based on the use of the computer device, etc. In addition, the memory 20 may include a high-speed random access memory, and may also include a non-transient memory, such as at least one disk storage device, a flash memory device, or other non-transient solid-state storage device. In some optional embodiments, the memory 20 may optionally include a memory remotely located relative to the processor 10, and these remote memories may be connected to the computer device via a network. Examples of the above-mentioned network include, but are not limited to, the Internet, an intranet, a local area network, a mobile communication network, and combinations thereof.

[0120] The memory 20 may include a volatile memory, such as a random access memory; the memory may also include a non-volatile memory, such as a flash memory, a hard disk or a solid-state drive; the memory 20 may also include a combination of the above types of memory.

[0121] The computer device further includes a communication interface 30 for the computer device to communicate with other devices or a communication network.

[0122] The embodiment of the present invention also provides a computer-readable storage medium. The above-mentioned method according to the embodiment of the present invention can be implemented in hardware, firmware, or implemented as a computer code that can be recorded in a storage medium, or implemented as a computer code that is originally stored in a remote storage medium or a non-temporary machine-readable storage medium and downloaded through a network and will be stored in a local storage medium, so that the method described herein can be stored in such software processing on a storage medium using a general-purpose computer, a dedicated processor, or programmable or dedicated hardware. Among them, the storage medium can be a magnetic disk, an optical disk, a read-only storage memory, a random access memory, a flash memory, a hard disk or a solid-state drive, etc.; further, the storage medium can also include a combination of the above-mentioned types of memory. It can be understood that a computer, a processor, a microprocessor controller or programmable hardware includes a storage component that can store or receive software or computer code. When the software or computer code is accessed and executed by a computer, a processor or hardware, the method shown in the above embodiment is implemented.

[0123] A portion of the present invention may be applied as a computer program product, such as a computer program instruction, which, when executed by a computer, can call or provide the method and / or technical solution according to the present invention through the operation of the computer. Those skilled in the art should understand that the form in which the computer program instruction exists in a computer-readable medium includes, but is not limited to, a source file, an executable file, an installation package file, etc. Accordingly, the way in which the computer program instruction is executed by the computer includes, but is not limited to: the computer directly executes the instruction, or the computer compiles the instruction and then executes the corresponding compiled program, or the computer reads and executes the instruction, or the computer reads and installs the instruction and then executes the corresponding installed program. Here, the computer-readable medium may be any available computer-readable storage medium or communication medium that can be accessed by the computer.

[0124] Although the embodiments of the present invention have been described with reference to the accompanying drawings, those skilled in the art may make various modifications and variations without departing from the spirit and scope of the present invention. Such modifications and variations are all within the scope defined by the appended claims.

Claims

1. A method for adjusting a three-dimensional display viewing angle, characterized in that: Acting on a liquid cylindrical lens, the method comprises: determining a current applied signal according to an expected viewing angle range, generating a driving force based on the current applied signal, and causing the liquid cylindrical lens to deform based on the driving force to change a curvature radius; When the curvature radius of the liquid cylindrical lens is changed, the light beam emitted by the display is controlled to penetrate the liquid cylindrical lens and be refracted, so that the actual viewing angle range of the three-dimensional display reaches the expected viewing angle range.

2. The method according to claim 1, characterized in that Before determining a current applied signal according to an expected viewing angle range, generating a driving force based on the current applied signal, and causing the liquid cylindrical lens to deform based on the driving force to change its curvature radius, the method further includes: adjusting the actual applied signal according to a preset step size to generate a driving force based on the actual applied signal, so as to change the actual curvature radius of the liquid cylindrical lens; determining an actual transmission angle of the light beam after the actual curvature radius changes; A first mapping relationship is established according to the actual applied signal and the actual transmission angle.

3. The method according to claim 2, characterized in that When a mapping relationship is established according to the actual applied signal and the actual transmission angle, the method further includes: An actual temperature is acquired, and a second mapping relationship is constructed according to the actual temperature and the first mapping relationship.

4. The method according to claim 3, characterized in that The determining of the current applied signal according to the expected viewing angle range includes: determining a target transmission angle according to the expected viewing angle range; The current temperature and the second mapping relationship are acquired, and a current applied signal is determined according to the current temperature, the target transmission angle, and the second mapping relationship.

5. The method according to claim 1, characterized in that The display is divided into different pixel display units, each pixel display unit includes a left pixel and a right pixel, the liquid cylindrical lens corresponds to the pixel display unit of the display, and the light beam emitted by the control display penetrates the liquid cylindrical lens and is refracted, including: Acquire a resolution mode, where the resolution mode includes: a high-resolution mode and a normal resolution mode; If the normal resolution mode is used, controlling the left pixel in the pixel display unit to emit a first light beam and the right pixel in the pixel display unit to emit a second light beam, so that the first light beam and the second light beam simultaneously penetrate the liquid cylindrical lens and undergo a first refraction and a second refraction; If it is the high-resolution mode, the left pixel and the right pixel in the pixel display unit are controlled to emit the first light beam at the same time, and to emit the second light beam at the same time after a preset time interval, so that the first light beam and the second light beam successively penetrate the liquid cylindrical lens and cause the first refraction and the second refraction.

6. The method according to claim 1, characterized in that After determining the current applied signal according to the expected viewing angle range, the method further includes: monitoring the current applied signal to obtain an actual applied signal; The current applied signal is compared with the actual applied signal, and a prompt message is generated if they are inconsistent.

7. A device for adjusting a three-dimensional display viewing angle, characterized in that: Acting on a liquid cylindrical lens, the device comprises: a curvature radius adjustment module, configured to determine a current applied signal according to an expected viewing angle range, and generate a driving force based on the current applied signal, so that the liquid cylindrical lens deforms based on the driving force to change the curvature radius; The viewing angle range adjustment module is used to control the light beam emitted by the display to penetrate the liquid cylindrical lens and refract after the liquid cylindrical lens changes its curvature radius, so that the actual viewing angle range of the three-dimensional display reaches the expected viewing angle range.

8. A computer device, characterized in that: include: A memory and a processor, wherein the memory and the processor are communicatively connected to each other, the memory stores computer instructions, and the processor executes the method for adjusting the three-dimensional display viewing angle according to any one of claims 1 to 6 by executing the computer instructions.

9. A computer-readable storage medium, characterized in that The computer-readable storage medium stores computer instructions, and the computer instructions are used to enable a computer to execute the method for adjusting the three-dimensional display viewing angle according to any one of claims 1 to 6.

10. A computer program product, characterized in that The method comprises computer instructions for causing a computer to execute the method for adjusting the three-dimensional display viewing angle according to any one of claims 1 to 6.

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