Naked eye 3D implementation method and related equipment

Abstract

The invention relates to the technical field of naked-eye 3D, in particular to a naked-eye 3D implementation method and related equipment. The method comprises the following steps of: emitting a source image from a TFT-LCD (Thin Film Transistor-Liquid Crystal Display) display source of which the polarization direction is 135 degrees or 45 degrees; dividing the source image into two beams of light in different polarization directions by using a polarizing beam splitter converter, one beam being P light for forming a first image, and the other beam being S light for forming a second image; and the inclination direction of the polarization beam splitter converter is adjusted, so that the P light and the S light enter different optical paths respectively. The whole system is further focused and amplified by using the amplification reflecting mirror, so that the large-format 3D display is realized, the light path is effectively folded, and the size of the device is reduced. The naked-eye 3D display device is simple in structure, low in cost, high in adaptability and easy to popularize, and the naked-eye 3D display quality is improved.

Description

Technical Field

[0001] The present invention relates to the field of naked-eye 3D technology, and in particular to a naked-eye 3D implementation method and related equipment. Background Art

[0002] In the existing 3D display technology, common solutions include wearing a head-mounted display device to assist imaging and a diffraction solution. Although the solution of wearing a head-mounted display device can achieve a good 3D effect, it requires the user to wear the device for a long time, which can easily cause fatigue and is not suitable for long-term use. Although the diffraction solution can achieve naked-eye 3D display, its high cost and low production yield limit its popularization and application. In addition, although the solution of using the Brewster angle to separate polarized light to achieve naked-eye 3D imaging can achieve image separation, the lack of image magnification function results in a large device size. Therefore, the technical problem raised by the present invention is: how to achieve lightweight naked-eye 3D with image magnification. Summary of the invention

[0003] The present invention provides a naked-eye 3D implementation method, system, device and storage medium to implement naked-eye 3D in a simple, low-cost and lightweight manner.

[0004] The technical solution of the present invention to solve the above technical problems is as follows: In one aspect, a naked eye 3D implementation method is provided, the method comprising: The source image is emitted from a TFT-LCD display source with a polarization direction of 135° or 45°; Use a polarization beam splitter converter to split the source image into two beams of light with different polarization directions, one of which is P light for forming a first image, and the other is S light for forming a second image; Adjusting the tilt direction of the polarization beam splitter converter so that the P light and the S light enter different optical paths respectively; The P light and the S light are folded by a reflector to change the light emission direction so that the P light and the S light finally enter the human eye; Adjust the angle of the reflector so that the optical axis directions of the P light and the S light are consistent to avoid parallax dizziness; The P light and the S light are amplified by using a magnifying reflector to ensure that the first image and the second image have the same frame at the human eye.

[0005] Furthermore, the selection of the polarization direction of the TFT-LCD display source is based on the following steps: Calculate the component energies of the light emitted by the TFT-LCD display source in the horizontal and vertical directions, which are E and h and E v ; Let the component energies satisfy the following conditions: , where E represents the amplitude intensity of the TFT-LCD display source in the 45° direction; The polarization direction of the TFT-LCD display source is adjusted so that the energy intensities of the P light and the S light are consistent, so as to ensure the consistency of brightness of the first image and the second image.

[0006] Furthermore, the steps of determining the transmission characteristics and reflection characteristics of the polarization beam splitter converter are: Calculating the angle θ between the polarization direction of the polarization beam splitter converter and the polarization direction of the TFT-LCD display source; Let the angle satisfy the following conditions: ,in, ; The angle is adjusted so that the polarization beam splitter converter separates the P light and the S light, so as to enhance the depth of field of the first image and the second image.

[0007] Furthermore, the optical path is adjusted by: Calculating an optical path difference ΔL between the P light and the S light; Let the optical path difference satisfy the following conditions: , where n is the refractive index; The position and angle of the polarization beam splitter converter are adjusted so that the optical path difference reaches a desired value, so as to achieve inconsistent depths of field between the first image and the second image.

[0008] Furthermore, the steps of adjusting the angle of the reflector are as follows: Calculate the incident angle and the outgoing angle of the P light and the S light, which are θ1 and θ2 respectively; The incident angle and the outgoing angle satisfy the following conditions: ,in, ; The angle of the reflector is adjusted so that the optical axis directions of the P light and the S light remain consistent at the human eye to avoid parallax.

[0009] Furthermore, the adjustment steps for keeping the optical axis direction consistent are: Calculate the offsets δ1 and δ2 of the P light and the S light at the reflector; Let the offset satisfy the following conditions: ,in, ; The angle of the reflector is adjusted until the offset reaches a desired value, so as to ensure that the optical axis directions of the P light and the S light are consistent.

[0010] Furthermore, the magnification A of the magnifying reflector is determined by the following steps: Calculating the frame sizes of the first image and the second image, which are H1 and H2 respectively; Let the magnification satisfy the following conditions: , , ; The magnification of the magnifying reflector is adjusted to make the frames of the first image and the second image consistent.

[0011] On the other hand, a naked eye 3D implementation system is provided, the system comprising: A TFT-LCD display source with a polarization direction of 135° or 45° for emitting a source image; Two polarization beam splitter converters, respectively used to separate the P light and the S light emitted by the TFT-LCD display source, so that the P light and the S light enter different optical paths; Two reflectors, respectively used to fold the optical paths of the P light and the S light and change the light emission directions so that both of them finally enter the human eye; A magnifying reflector, used to amplify the P light and the S light to ensure that the two images have the same frame at the human eye; A control unit is used to adjust the angles of the PBS conversion device and the reflector so that the optical axis directions of the P light and the S light remain consistent at the human eye to avoid parallax.

[0012] In another aspect, a naked-eye 3D implementation device is provided, comprising the naked-eye 3D implementation system as described above, and the device further comprises: A user sensor, used to detect the viewing distance and viewing angle of the user, so as to adaptively adjust the relative position and angle of the polarization beam splitter converter and the reflector; An image processor, configured to adjust an output image of the display source according to data of the user sensor, and optimize display effects of the first image and the second image; A display panel, used for displaying the first image and the second image, so as to ensure that a three-dimensional image can be seen without wearing any tool; A power module, used to provide power to the device; A housing is used to protect the device.

[0013] On the other hand, a storage medium is provided, on which a computer-readable program is stored. When the program is executed by a processor, the computer executes the naked-eye 3D implementation method as described above.

[0014] The beneficial effects of the present invention are: The present invention provides a naked-eye 3D implementation method, which uses a TFT-LCD display screen with a polarization direction of 135° or 45° to emit a source image, and uses a polarization beam splitter converter to separate the source image into P light and S light. The first image and the second image pass through different optical paths, fold the optical path and change the light output direction through a reflector, and finally enter the human eye. In order to ensure that the optical axis directions of the two images are consistent and avoid the dizziness caused by parallax, the present invention ensures that the optical axis directions of the first image and the second image are consistent by adjusting the angle of the reflector. At the same time, the present invention adds a magnifying glass in the first image path and adjusts its magnification so that the frames of the first image and the second image are consistent, thereby improving the viewing effect. In addition, by using a magnifying reflector to further focus and magnify the entire system, the present invention not only realizes large-format 3D display, but also effectively folds the optical path and reduces the size of the device. The present invention has a simple structure and low cost, strong adaptability and is easy to promote, thereby improving the quality of naked-eye 3D display.

[0015] The above description is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention and implement it according to the contents of the specification, the following is a detailed description of the preferred embodiments of the present invention in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 Flow chart of a naked-eye 3D implementation method according to an embodiment of the present invention; Figure 2 A schematic diagram of the polarization direction of a TFT-LCD display source in one embodiment of the present invention; Figure 3 Schematic diagram of the principle of a method for realizing naked-eye 3D in one embodiment of the present invention; Figure 4 A schematic diagram of a light beam splitting process of a polarization beam splitter converter according to an embodiment of the present invention; Figure 5 A schematic diagram of a light energy path in an embodiment of the present invention; Figure 6 A schematic diagram of source image splitting in one embodiment of the present invention; Figure 7 Schematic diagram of the P light and S light paths in one embodiment of the present invention; Figure 8 Schematic diagram of the incident angle and the outgoing angle of P light or S light in one embodiment of the present invention; Fig. 9It is a schematic diagram of another embodiment of the present invention; Fig.10 It is a schematic diagram of another embodiment of the present invention. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions 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 ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0018] The term "comprise" and any variation thereof in the specification and claims of the present application are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device comprising a series of steps or units need not be limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices. In addition, the use of "and / or" in the specification and claims to indicate at least one of the connected objects, such as A and / or B, means including A alone, B alone, and A and B.

[0019] In the embodiments of the present invention, words such as "exemplary" or "for example" are used to indicate examples, illustrations or explanations. Any embodiment or design described as "exemplary" or "for example" in the embodiments of the present invention should not be interpreted as being more preferred or more advantageous than other embodiments or designs. Specifically, the use of words such as "exemplary" or "for example" is intended to present related concepts in a specific way.

[0020] The present invention provides the following preferred embodiments: Embodiment 1 In order to solve the problems of large size, high cost and easy fatigue of users in the existing naked-eye 3D display technology, this embodiment proposes a naked-eye 3D implementation method. Figure 1 As shown, the steps of the naked eye 3D implementation method in this embodiment are: S100, a source image is emitted from a TFT-LCD display source with a polarization direction of 135° or 45°.

[0021] S200, using a polarization beam splitter converter to split the source image into two beams of light with different polarization directions, one of which is P light for forming a first image, and the other is S light for forming a second image.

[0022] S300, adjusting the tilt direction of the polarization beam splitter converter so that the P light and the S light enter different optical paths respectively.

[0023] S400, folding the P light and the S light through a reflector to change the light output direction so that the P light and the S light finally enter the human eye.

[0024] S500. Adjust the angle of the reflector to keep the optical axis directions of the P light and the S light consistent, so as to avoid parallax dizziness.

[0025] S600: Use a magnifying reflector to amplify the P light and the S light to ensure that the first image and the second image are consistent in size at the human eye.

[0026] like Figure 2 As shown, in this embodiment, the polarization direction of the TFT-LCD display source is 135° or 45°. Generally, the polarization direction of the TFT-LCD display source is vertical or horizontal, but in the present invention, in order to achieve image separation and keep the brightness consistent, the polarization direction of the display source is carefully set to 135° or 45°. It should be understood that Figure 6 As shown, this choice of polarization direction can effectively separate the P light and the S light through a polarization beam splitter (PBS) converter in the subsequent step, and since the amplitude intensity of the two beams is consistent, the brightness of the first image and the second image is ensured to be consistent.

[0027] Furthermore, if Figure 3 , Figure 4 and Figure 7 As shown, the polarization beam splitter converter is used to separate the source image into P light and S light. The working principle of the polarization beam splitter converter is to separate light with a specific polarization direction into two beams of light with different polarization directions through its polarization characteristics. In this embodiment, the polarization beam splitter converter transmits S light and reflects P light, or transmits P light and reflects S light. The specific selection depends on the type of image to be displayed. By adjusting the tilt direction of the polarization beam splitter converter, it can be achieved that P light and S light enter different optical paths respectively. It should be understood that this characteristic of the polarization beam splitter converter is one of the prerequisites for realizing naked-eye 3D display. By separating the optical paths, the depth of field of the first image and the second image remains inconsistent, thereby forming a stereoscopic visual effect.

[0028] like Figure 7 As shown, the light reflected by PBS converter 02 is P light, and the light transmitted through PBS converter 02 is S light. Similarly, PBS converter 02 and PBS converter 04 can also be changed to transmit P light and reflect S light. In this case, the first image is imaged by P light, and the second image is imaged by S light. After passing through PBS converter 02, the light beam is divided into two paths. The optical paths of the two paths are inconsistent, so that the user can observe the first image and the second image with inconsistent depth of field. Reflector 05 and reflector 06 both play the role of folding the optical path and changing the light output direction.

[0029] Furthermore, the reflector is used to fold the optical path of the P light and the S light, change the light output direction, and make the two light beams finally enter the human eye. Figure 3 As shown, reflector 05 and reflector 06 are respectively located in the path of P light or S light. By adjusting the angle of the reflector, the light emission direction of the light beam can be changed so that it converges at the human eye. It should be understood that the angle adjustment of the reflector can not only achieve the correct folding of the light beam, but also correct the path error of the light beam to a certain extent, thereby improving the clarity and stability of the image.

[0030] Furthermore, in order to ensure that the optical axis directions of the P light and the S light remain consistent at the human eye and avoid the dizziness caused by parallax, this goal is achieved by adjusting the angle of the reflector in this embodiment. The specific steps are to calculate the incident angle and the exit angle of the P light and the S light at the reflector so that these angles meet specific conditions, thereby ensuring that the optical axis directions of the two beams of light remain consistent at the human eye. It should be understood that this angle adjustment process is achieved through a closed-loop control system that can dynamically monitor the direction of the optical axis and make necessary adjustments to maintain precise alignment of the optical axis.

[0031] Furthermore, if Figure 3 As shown, the P light and the S light are amplified by using a magnifying reflector 07 to ensure that the frames of the first image and the second image are consistent at the human eye.

[0032] The benefit of this embodiment is that the naked eye 3D implementation method of this embodiment is not only simple in structure and low in cost, but also can effectively reduce the size of the device and improve the viewing experience. By selecting a specific polarization direction and using a PBS converter, the separation and brightness of P light and S light are ensured to be consistent. By adjusting the optical path of the reflector and accurately aligning the optical axis direction, the dizziness caused by parallax is avoided. At the same time, the introduction of the magnifying reflector makes the two images consistent in size at the human eye, further improving the imaging quality.

[0033] Embodiment 2 In order to solve the problem of inconsistent image brightness in the prior art, this embodiment further optimizes the step of selecting the polarization direction of the TFT-LCD display source. Specifically, this embodiment describes in detail how to adjust the polarization direction of the display source by calculating the component energy of the light emitted by the TFT-LCD display source in the horizontal direction and the vertical direction to ensure that the energy intensity of the P light and the S light is consistent, thereby achieving consistent brightness of the first image and the second image.

[0034] like Figure 5As shown, assuming that the energy coming out of the LCD is 1W, then after passing through the PBS converter 02, the energies of the two light beams are 0.5W and 0.5W respectively, and after passing through the PBS converter 04, the energies of the two light beams are respectively lost by half, and the energy reaching the magnifying reflector 07 is 0.25W+0.25W=0.5W. The system energy is lost by half, which greatly reduces the brightness.

[0035] In this embodiment, the polarization direction of the TFT-LCD display source is 135° or 45°. First, it is necessary to calculate the component energy of the light emitted by the TFT-LCD display source in the horizontal direction and the vertical direction, which are respectively recorded as E h and E v The specific calculation formula is as follows: , where E represents the amplitude intensity of the TFT-LCD display source in the direction of 135° or 45°. It should be understood that the polarization direction of the TFT-LCD display source is selected to be 135° or 45° in order to ensure that the energy of the components of the light in the two polarization directions is consistent, so that the energy intensity of the P light and the S light can be kept consistent in the subsequent steps.

[0036] Furthermore, in this embodiment, a high-precision polarization direction measuring device is used to measure the polarization direction of the TFT-LCD display source. The measuring device can accurately detect whether the polarization direction of the display source meets the conditions of 135° or 45° by analyzing the polarization characteristics of light. If the detection result does not meet the conditions, correction can be made by adjusting the polarization direction of the display source. It should be understood that this measurement and correction process is to ensure that the energy of P light and S light is consistent, and this process can effectively avoid the problem of inconsistent image brightness.

[0037] Furthermore, in order to ensure that the energy intensities of the P light and the S light are consistent, a polarization beam splitter converter is used in this embodiment. The polarization beam splitter converter separates the light emitted by the TFT-LCD display source into P light and S light. The transmission characteristics and reflection characteristics of the polarization beam splitter converter need to be adjusted according to the polarization direction of the display source. Specifically, if the polarization direction of the TFT-LCD display source is 45°, the PBS converter should transmit S light and reflect P light, and vice versa. It should be understood that this characteristic of the polarization beam splitter converter can ensure that the energy intensity of the two beams of light remains consistent after separation, thereby avoiding the brightness difference between the first image and the second image.

[0038] Furthermore, the polarization direction of the TFT-LCD display source can be realized by adding a polarization conversion layer. The polarization conversion layer can convert conventional vertical or horizontal polarized light into 135° or 45° polarized light. The specific material of the polarization conversion layer is selected as a polarizing film, and its thickness is adjusted according to the required polarization conversion efficiency. It should be understood that the use of the polarizing film can not only realize the conversion of the polarization direction, but also improve the transmittance of light to a certain extent and reduce the loss of light energy.

[0039] Furthermore, this embodiment also takes into account the light source intensity and stability of the TFT-LCD display source. In order to ensure that the light source intensity of the display source is consistent and stable, a high-brightness and low-power LED backlight source is used in this embodiment. The LED backlight source can provide a stable light source and reduce the impact of light intensity fluctuations on imaging quality. In addition, a light sensor is used to monitor the light source intensity in real time, and dynamic adjustments are made through a closed-loop control system to ensure stable output of the light source.

[0040] The benefit of this embodiment is that by accurately calculating and adjusting the polarization direction of the TFT-LCD display source, the energy intensity of the P light and the S light is ensured to be consistent, thereby achieving the consistency of brightness of the first image and the second image. This optimization not only improves the visual effect of the image, but also reduces the visual fatigue and discomfort caused by inconsistent brightness when the user is watching.

[0041] Embodiment 3 In order to solve the problem of low efficiency of separating P light and S light by the polarization beam splitter converter in the prior art, this embodiment further refines the steps of determining the transmission characteristics and reflection characteristics of the polarization beam splitter converter. Specifically, this embodiment describes in detail how to adjust the angle to enhance the depth of field effect of the first image and the second image by calculating the angle between the polarization direction of the polarization beam splitter converter and the polarization direction of the TFT-LCD display source.

[0042] In this embodiment, the angle θ between the polarization direction of the polarization beam splitter converter and the polarization direction of the TFT-LCD display source needs to be accurately calculated. The specific calculation formula is as follows: ,in,

[0043] The selection range of this angle is based on the premise that the polarization direction of the TFT-LCD display source is 135° or 45°. It should be understood that the selection range of the angle θ can effectively ensure the efficiency of the polarization beam splitter converter in separating P light and S light, thereby improving the depth of field effect of the image.

[0044] Furthermore, in this embodiment, a high-precision optical measuring device is used to measure and adjust the angle between the TFT-LCD display source and the polarization beam splitter converter. The measuring device can accurately detect whether the angle between the two meets the above conditions and make corrections through an automatic adjustment device. It should be understood that this measurement and adjustment process is to ensure the separation efficiency of P light and S light, and this process can effectively improve the depth of field effect of the image.

[0045] Furthermore, the material of the polarization beam splitter converter is selected as a high refractive index material. The high refractive index material can effectively control the polarization direction of the light beam and ensure the separation accuracy of the P light and the S light. Specifically, the high refractive index material used in this embodiment is titanium dioxide, which has a high refractive index and good optical properties. It should be understood that the selection of high refractive index materials can not only improve the efficiency of light beam separation, but also reduce the loss of light energy to a certain extent, and improve the overall performance of the system.

[0046] Furthermore, in order to further improve the separation effect of P light and S light, the surface treatment of the polarization beam splitter converter in this embodiment is optimized. Specifically, the surface of the polarization beam splitter converter is coated to reduce light scattering and reflection losses. The coating material is silicon dioxide, and its thickness and refractive index are adjusted according to specific needs. It should be understood that the optimization of the surface treatment can effectively improve the separation accuracy and transmission efficiency of the light beam, thereby further improving the depth of field effect of the image.

[0047] The benefit of this embodiment is that by accurately calculating and adjusting the angle between the polarization beam splitter converter and the TFT-LCD display source, the separation effect of P light and S light is improved, thereby achieving a better depth of field effect. This optimization not only improves the three-dimensional sense of the image, but also effectively reduces the size and cost of the device, further improving the imaging quality of the system.

[0048] Embodiment 4 In order to solve the problem in the prior art that the optical path difference between the P light and the S light is inconsistent, resulting in an unsatisfactory depth of field effect, this embodiment further optimizes the optical path adjustment step. Specifically, this embodiment describes in detail how to calculate the optical path difference between the P light and the S light, and adjust the position and angle of the polarization beam splitter converter so that the optical path difference reaches the desired value, thereby achieving the depth of field effect of the first image and the second image.

[0049] In this embodiment, the optical path difference ΔL needs to be accurately calculated. The specific calculation formula is as follows: , where α is the inclination angle of the polarization beam splitter converter, and h is the distance between the polarization beam splitter converter and the reflector in the same vertical direction. It should be understood that the optical path difference ensures that the first image and the second image have different depths of field. By accurately calculating the optical path difference, it can be ensured that the depth of field effect of the two beams of light when reaching the human eye meets the design requirements.

[0050] Furthermore, in this embodiment, a high-precision optical path measurement device is used to measure the optical path difference between P light and S light. The measuring device can detect the optical path difference in real time, and adjust the position and angle of the polarization beam splitter converter through a closed-loop control system so that the optical path difference reaches the desired value. Specifically, the closed-loop control system includes a controller and an actuator. The controller calculates the position and angle of the polarization beam splitter converter that needs to be adjusted based on the results detected by the optical path measurement device, and sends the adjustment instructions to the actuator. It should be understood that the use of this closed-loop control system can ensure the precise adjustment of the optical path difference, thereby achieving an ideal depth of field effect.

[0051] Further, the position and angle adjustment of the polarization beam splitter converter is achieved through a precise adjustment mechanism. The adjustment mechanism includes a plurality of fine-tuning screws and an angle encoder. The fine-tuning screws are used to finely adjust the position of the polarization beam splitter converter, and the angle encoder is used to accurately measure and adjust the angle of the polarization beam splitter converter. It should be understood that the use of the fine-tuning screws and the angle encoder can achieve fine adjustment of the position and angle of the polarization beam splitter converter, thereby ensuring precise control of the optical path difference.

[0052] Further, the selection of the refractive index n is based on the material properties used in the display system. Specifically, the material used in this embodiment is glass, and its refractive index is about 1.5. It should be understood that the precise selection of the refractive index can improve the accuracy of the optical path difference calculation, thereby ensuring the realization of the depth of field effect. In addition, the selection of different materials also needs to be adjusted according to the actual application scenario to adapt to different light conditions and environmental requirements.

[0053] Furthermore, the present embodiment also takes into account the errors that may occur during the adjustment process of the polarization beam splitter converter. In order to reduce the errors, a multi-point calibration method is used in the present embodiment. Specifically, by setting a plurality of calibration points at different positions, it is possible to ensure that the adjustment process of the polarization beam splitter converter is more accurate. The selection and setting of the calibration points need to be carried out according to the specific design requirements to ensure that the optical path difference at each position meets the design conditions. It should be understood that the application of the multi-point calibration method can effectively reduce the adjustment errors and improve the stability of the system.

[0054] Through this embodiment, the naked eye 3D implementation method can not only accurately calculate and adjust the optical path difference between P light and S light to achieve the depth of field effect of the first image and the second image, but also reduce the adjustment error to a certain extent. The benefit of this embodiment is that through accurate optical path adjustment, a better depth of field effect is achieved, which improves the overall quality of naked eye 3D display.

[0055] Embodiment 5 In order to solve the parallax problem caused by the inconsistency of the optical axis directions of the P light and the S light in the prior art, this embodiment further optimizes the angle adjustment step of the reflector. Specifically, this embodiment describes in detail how to calculate the incident angle and the exit angle of the P light and the S light and adjust the angle of the reflector so that the optical axis directions of the two beams of light are consistent at the human eye, thereby avoiding the dizziness caused by parallax.

[0056] In this embodiment, Figure 8 As shown, in order to ensure that the optical axes of the two images observed by the human eye are consistent, the incident angle and the exit angle of the P light and the S light must meet the following requirements: ,in,

[0057] Among them, θ1 and θ2 are the incident angle and the exit angle of P light and S light respectively. It should be understood that the precise calculation of the incident angle and the exit angle is to ensure the consistency of the optical axis direction. Through the above calculation, it can be ensured that the optical axis direction of P light and S light remains consistent at the human eye after passing through the reflector.

[0058] Furthermore, in this embodiment, a high-precision angle measuring device is used to measure the incident angle and the exit angle of the P light and the S light. The measuring device can detect the incident angle and the exit angle in real time, and adjust the angle of the reflector through a closed-loop control system to keep the direction of the optical axis consistent. Specifically, the closed-loop control system includes an angle controller and an actuator. The angle controller calculates the reflector angle that needs to be adjusted based on the results of the measurement device detection, and sends the adjustment instruction to the actuator. It should be understood that the use of this closed-loop control system can ensure the precise adjustment of the incident angle and the exit angle, thereby avoiding the dizziness caused by parallax.

[0059] Furthermore, the material of the reflector is metal-coated glass. Metal-coated glass has high reflectivity and good stability, and can effectively reduce the loss of light during the reflection process. Specifically, the metal-coated material used in this embodiment is silver, which has high reflectivity and good durability. It should be understood that the selection of the reflector material can not only improve the reflection efficiency, but also improve the imaging quality of the system to a certain extent.

[0060] Furthermore, the angle adjustment of the reflector is achieved through a precise adjustment mechanism. The adjustment mechanism includes a plurality of fine-tuning screws and an angle encoder. The fine-tuning screws are used to finely adjust the position of the reflector, and the angle encoder is used to accurately measure and adjust the angle of the reflector. It should be understood that the use of the fine-tuning screws and the angle encoder can achieve fine adjustment of the reflector angle, thereby ensuring the consistency of the optical axis direction at the human eye.

[0061] Furthermore, the present embodiment also takes into account the errors that may occur during the adjustment of the reflector. In order to reduce the errors, the present embodiment can also use a multi-point calibration method. Specifically, by setting multiple calibration points at different positions, the adjustment process of the reflector can be ensured to be more accurate. The selection and setting of the calibration points need to be carried out according to specific design requirements to ensure that the optical axis direction at each position meets the design conditions.

[0062] Through this embodiment, the naked eye 3D implementation method can not only accurately calculate and adjust the incident angle and the exit angle of the P light and the S light, so that the direction of the optical axis is consistent at the human eye, but also reduce the adjustment error to a certain extent, and improve the stability and reliability of the system. The benefit of this embodiment is that the dizziness caused by parallax is avoided by accurately adjusting the angle of the reflector.

[0063] Embodiment 6 In order to solve the parallax problem caused by the inconsistency of the optical axis directions of the P light and the S light in the prior art, this embodiment further optimizes the adjustment steps for keeping the optical axis directions consistent. Specifically, this embodiment describes in detail how to calculate the offset of the P light and the S light at the reflector and adjust the angle of the reflector to ensure that the optical axis directions of the two beams are consistent, thereby avoiding parallax.

[0064] In this embodiment, the offsets δ1 and δ2 of the P light and the S light at the reflector need to be accurately calculated. The specific calculation formula is as follows: ,in,

[0065] It should be understood that the precise calculation of the offset is to ensure that the optical axis directions of the P light and the S light are consistent. Through the above calculation, it can be ensured that the optical axis directions of the P light and the S light remain consistent at the human eye after passing through the reflector, thereby avoiding the dizziness caused by the parallax phenomenon.

[0066] Furthermore, this embodiment uses a high-precision offset measurement device to measure the offset of P light and S light. The measuring device can detect the offset in real time, and adjust the angle of the reflector through a closed-loop control system to keep the direction of the optical axis consistent. Specifically, the closed-loop control system includes an offset controller and an actuator. The offset controller calculates the reflector angle that needs to be adjusted based on the results of the measurement device detection, and sends the adjustment instruction to the actuator. It should be understood that the use of this closed-loop control system can ensure the precise adjustment of the offset, thereby achieving consistency in the direction of the optical axis.

[0067] Furthermore, the material of the reflector is metal-coated glass. Metal-coated glass has high reflectivity and good stability, and can effectively reduce the loss of light during the reflection process. Specifically, the metal-coated material used in this embodiment is aluminum, which has high reflectivity and good durability. It should be understood that the selection of the reflector material can not only improve the reflection efficiency, but also improve the imaging quality of the system to a certain extent.

[0068] Furthermore, the angle adjustment of the reflector is achieved through an adjustment mechanism. The adjustment mechanism includes a plurality of fine-tuning screws and an angle encoder. The fine-tuning screws are used to finely adjust the position of the reflector, and the angle encoder is used to accurately measure and adjust the angle of the reflector. It should be understood that the use of the fine-tuning screws and the angle encoder can achieve fine adjustment of the angle of the reflector, thereby ensuring the consistency of the optical axis direction at the human eye.

[0069] The benefit of this embodiment is that by accurately calculating and adjusting the offset of the P light and the S light at the reflector, the direction of the optical axis is kept consistent at the human eye, thereby avoiding parallax and improving the stereoscopic effect of the image.

[0070] Embodiment 7 In order to solve the problem of inconsistent frames of the first image and the second image in the prior art, this embodiment further optimizes the step of determining the magnification of the magnifying reflector. Specifically, this embodiment describes in detail how to calculate the frame sizes of the first image and the second image and adjust the magnification of the magnifying reflector so that the frames of the two images are consistent at the human eye.

[0071] In this embodiment, the frame sizes H1 and H2 of the first image and the second image need to be accurately calculated. The specific calculation formula is as follows:

[0072] Among them, V ID1 and V ID2 are the distances from the first image to the human eye and the second image to the human eye, H FOVis the field of view in the horizontal direction. It should be understood that accurate calculation of the frame size is one of the key steps to ensure that the frames of the two images are consistent at the human eye. Through this calculation, it can be determined whether the frame sizes of the first image and the second image are consistent, so that corresponding adjustment measures can be taken.

[0073] Furthermore, the magnification A of the magnifying reflector in this embodiment needs to be adjusted according to the above calculation results. The specific adjustment formula is as follows:

[0074] It should be understood that the magnification A is adjusted to make the first image and the second image consistent in size at the human eye.

[0075] Furthermore, the surface of the magnifying reflector is selected to be aspherical. The aspherical reflector can effectively correct aberrations and improve the clarity and imaging quality of the image. Specifically, the surface parameters of the aspherical reflector are optimized according to the frame sizes of the first image and the second image to achieve the best magnification effect. It should be understood that the selection of the aspherical reflector can not only improve the magnification effect, but also reduce aberrations to a certain extent and improve the imaging quality of the system.

[0076] Furthermore, in order to monitor and adjust the magnification of the magnifying reflector in real time, a high-precision frame measuring device is used in this embodiment. The measuring device can detect the frame size of the first image and the second image in real time, and adjust the magnification of the magnifying reflector through a closed-loop control system. The closed-loop control system includes a frame controller and an actuator. The frame controller calculates the magnification that needs to be adjusted based on the results of the measurement device detection, and sends the adjustment instruction to the actuator. It should be understood that the use of this closed-loop control system can ensure the precise adjustment of the magnification, thereby achieving consistency of the frame of the first image and the second image.

[0077] The benefit of this embodiment is that by accurately calculating and adjusting the magnification of the magnifying reflector, the first image and the second image are made consistent in size at the human eye. This optimization not only improves the overall display quality of the image, but also reduces the visual fatigue and discomfort caused by inconsistent sizes when the user is watching.

[0078] Embodiment 8 In order to solve the problem of complex structure and high cost of naked eye 3D system in the prior art, this embodiment further proposes a naked eye 3D implementation system. Specifically, this embodiment describes in detail a naked eye 3D implementation system with simple structure, low cost and easy to promote, which realizes stereoscopic visual effect by using TFT-LCD display source with specific polarization direction, PBS conversion device and reflector.

[0079] The system of this embodiment includes a TFT-LCD display source with a polarization direction of 135° or 45°, which is used to emit a source image. It should be understood that the polarization direction of 135° or 45° is selected to ensure the efficiency of the separation of P light and S light, thereby improving the quality of the image. In addition, the display source uses a low-power LED backlight source, which can provide a stable light source and reduce the impact of light intensity fluctuations on imaging quality.

[0080] Furthermore, the system also includes two PBS conversion devices, which are used to separate the P light and S light emitted by the TFT-LCD display source. The two PBS conversion devices ensure that the P light and the S light enter different optical paths, thereby producing a depth of field effect. It should be understood that the transmission characteristics and reflection characteristics of the PBS conversion device need to be adjusted according to the polarization direction of the TFT-LCD display source to ensure the optimal separation effect. Specifically, the first PBS conversion device transmits S light and reflects P light, and the second PBS conversion device is tilted in the opposite direction to the first PBS conversion device, and transmits P light and reflects S light.

[0081] Furthermore, the system also includes two reflectors, which are used to fold the optical path of P light and S light and change the light output direction so that both finally enter the human eye. The surface shapes of these two reflectors can be spherical, aspherical or free-form surfaces, and the specific selection depends on the requirements of the imaging effect. It should be understood that the surface shape selection of the reflector can effectively correct the aberration and improve the clarity and imaging quality of the image. In addition, the material of the reflector is metal-coated glass, which has high reflectivity and good stability, and can effectively reduce the loss of light during the reflection process.

[0082] Furthermore, the system also includes a magnifying reflector for amplifying the P light and the S light to ensure that the two images have the same frame at the human eye. The magnification of the magnifying reflector is determined by adjusting the optical path difference, and the specific adjustment method has been described in detail in the previous embodiment. It should be understood that the design of the magnifying reflector can not only increase the frame size of the image, but also reduce the aberration to a certain extent, thereby improving the imaging quality of the system.

[0083] Furthermore, the system also includes a control unit for adjusting the angle of the PBS conversion device and the reflector. The control unit monitors and adjusts the angle of the PBS conversion device and the reflector in real time through a closed-loop control system to ensure that the optical axis directions of the P light and the S light remain consistent at the human eye to avoid parallax. It should be understood that the design of the control unit can realize automatic adjustment of the system and improve the stability of the system.

[0084] The benefit of this embodiment is that it realizes the stereoscopic visual effect of naked-eye 3D through a simple structure and low-cost design. This optimization not only improves the imaging quality of the system, but also reduces the size and cost of the device, further improving the promotion of the system.

[0085] Embodiment 9 In order to solve the problem of unsatisfactory imaging effect and poor user experience of naked-eye 3D systems in the prior art, this embodiment proposes a naked-eye 3D implementation device, which includes a user sensor, an image processor, a display panel, a power module and a casing. The naked-eye 3D implementation device can adaptively adjust the image display effect according to the user's viewing distance and viewing angle, thereby improving visual comfort and stereoscopic effect.

[0086] The device of this embodiment includes a TFT-LCD display source with a polarization direction of 135° or 45°, which is used to emit a source image. It should be understood that the polarization direction of 135° or 45° is selected to ensure the efficiency of the separation of P light and S light, thereby improving the quality of the image. In addition, the display source uses a low-power LED backlight source, which can provide a stable light source and reduce the impact of light intensity fluctuations on imaging quality.

[0087] Furthermore, the device also includes a user sensor for detecting the user's viewing distance and viewing angle. The user sensor can detect the user's viewing position in real time through infrared or ultrasonic technology, and transmit the data to the control unit. The control unit adaptively adjusts the relative position and angle of the polarization beam splitter converter and the reflector according to the data of the user sensor, so as to achieve dynamic adjustment of the depth of field and frame of the first image and the second image. It should be understood that the data collection and transmission of the user sensor is one of the key steps to ensure the dynamic adjustment of the system. Through this dynamic adjustment, the system can automatically optimize the image display effect according to the user's viewing distance and viewing angle, and improve the visual comfort and stereoscopic effect.

[0088] Furthermore, the device also includes an image processor for adjusting the output image of the display source according to the data of the user sensor. The image processor optimizes the display effect of the first image and the second image through algorithm processing to ensure that the user obtains the best visual effect at different viewing distances and viewing angles. Specifically, the image processor can adjust the brightness, contrast and sharpness of the image to make the image clearer and more realistic. It should be understood that the use of the image processor can further improve the quality of the image.

[0089] Furthermore, the device also includes a display panel for displaying the first image and the second image, ensuring that the user can see the three-dimensional image without wearing tools. The display panel uses high-resolution LCD technology to provide a clear image display effect. In addition, the display panel also has a good refresh rate, which can reduce image delay and improve the response speed of the system. It should be understood that through a display panel with a high resolution and a high refresh rate, the system can provide a more realistic three-dimensional image.

[0090] Furthermore, the device also includes a power module for providing power to the entire system. The power module uses a high-efficiency power management chip, which can ensure the stable operation of the system and has the characteristics of low power consumption, thereby extending the use time of the device. It should be understood that the design of the power module can not only ensure the power supply of the system, but also reduce the power consumption of the system to a certain extent and improve the portability of the device.

[0091] Furthermore, the device also includes a housing for protecting various components of the device. The housing is made of high-strength material and can effectively prevent external impact and damage. In addition, the design of the housing also takes heat dissipation into consideration and has good heat dissipation performance to ensure that the system maintains a good working condition during long-term operation. It should be understood that the design of the housing can not only protect the components of the device, but also improve the reliability of the system.

[0092] The benefit of this embodiment is that through the coordinated work of the user sensor and the image processor, the first image and the second image are dynamically adjusted, and the visual comfort and stereoscopic effect are improved. In addition, the high-resolution display panel and the high-efficiency power module further improve the performance of the system and enhance the user's viewing experience.

[0093] Embodiment 10 In order to solve the problem that the naked-eye 3D implementation method in the prior art is difficult to implement in a software system, this embodiment proposes a non-volatile computer-readable storage medium, which stores a computer-readable program. When the program is executed by a processor, the naked-eye 3D display method can be implemented.

[0094] In this embodiment, the storage medium includes a non-volatile memory, such as a flash memory or a solid-state drive. The non-volatile memory can ensure that the program is still saved after power failure, thereby improving the reliability and stability of the system. It should be understood that the non-volatile memory is selected to ensure the persistence and integrity of the program. The flash memory or solid-state drive has a high read and write speed and a large storage capacity, which can meet the complex computing requirements of the naked-eye 3D implementation method.

[0095] Further, the program stored on the storage medium includes multiple modules, each of which is responsible for different functions. Specifically, these modules include a polarization direction calculation module, an optical path difference calculation module, a magnification adjustment module, a reflector angle adjustment module, and a user sensor data processing module. The polarization direction calculation module is responsible for calculating the component energy of the light emitted by the TFT-LCD display source in the horizontal and vertical directions, and the lens beam splitter converter transmission characteristic and reflection characteristic determination module is responsible for calculating the angle between the polarization direction of the PBS conversion device and the display source polarization direction, and making corresponding adjustments. The optical path difference calculation module is responsible for calculating the optical path difference between P light and S light, and adjusting the position and angle of the polarization beam splitter converter. The magnification adjustment module is responsible for calculating the frame size of the first image and the second image, and adjusting the magnification of the magnifying reflector. The reflector angle adjustment module is responsible for calculating the offset of P light and S light at the reflector, and adjusting the angle of the reflector. The user sensor data processing module is responsible for processing the data collected by the user sensor to achieve dynamic adjustment of the image display effect. It should be understood that the collaborative work of these modules can ensure that each link of the naked eye 3D implementation method is precisely controlled.

[0096] Furthermore, the program on the storage medium adopts a modular design, and each module has independent functions and can be tested and optimized separately. The modular design not only improves the efficiency of program development, but also facilitates subsequent maintenance and upgrades. Specifically, the modular design allows each part of the program to run independently, reduces the coupling between modules, and improves the stability of the system, so as to achieve a more efficient and reliable naked-eye 3D implementation method.

[0097] Furthermore, the program on the storage medium also includes a user interface module for interacting with the user. The user interface module provides a variety of mode selections and parameter settings through a graphical interface, so that the user can adjust the working state of the system according to their needs. Specifically, the user can select different image display modes, such as standard mode, enhanced mode, etc., and set various parameters, such as brightness, contrast, depth of field, etc. through the user interface module. It should be understood that the design of the user interface module can improve the ease of use of the system.

[0098] Furthermore, the program on the storage medium also includes a data transmission module for exchanging data with external devices. The data transmission module supports multiple data transmission protocols, such as USB, Wi-Fi, Bluetooth, etc., so that the system can exchange data with external devices (such as computers, mobile phones, etc.). Specifically, the data transmission module can receive image data sent by an external device and send the processed image data to the display panel. It should be understood that the design of the data transmission module can achieve system interoperability and make the naked-eye 3D implementation method suitable for a variety of application scenarios.

[0099] Through this embodiment, the naked eye 3D implementation method can not only be implemented on the storage medium, but also ensure that each link of the system is accurately controlled through the collaborative work of various modules. In addition, the design of the user interface module and the data transmission module further improves the ease of use and interoperability of the system. The benefit of this embodiment is that through the optimization of the software system, the efficient and reliable operation of the naked eye 3D display method is achieved.

[0100] Embodiment 11 It is understandable that the naked eye 3D implementation device of the present invention has different implementation modes, and two common transformation forms are listed here. Fig. 9 As shown, without using the reflective glass 08, the human eye observation position is placed behind the magnifying reflector 07; or as Fig.10 As shown, the human eye observation position is placed in front of the magnifying reflector 07. Both can realize naked eye 3D, but the depth of field caused by the optical path is different, and thus the effect is different.

[0101] The above embodiments further illustrate the purpose, technical solutions and beneficial effects of the present invention. It should be understood that the above are only specific implementation methods of the present invention and are not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc. made on the basis of the technical solutions of the present invention should be included in the scope of protection of the present invention.

Claims

1. A naked eye 3D implementation method, characterized in that: The steps of the method include: The source image is emitted from a TFT-LCD display source with a polarization direction of 135° or 45°; Use a polarization beam splitter converter to split the source image into two beams of light with different polarization directions, one of which is P light for forming a first image, and the other is S light for forming a second image; Adjusting the tilt direction of the polarization beam splitter converter so that the P light and the S light enter different optical paths respectively; The P light and the S light are folded by a reflector to change the light emission direction so that the P light and the S light finally enter the human eye; Adjust the angle of the reflector so that the optical axis directions of the P light and the S light are consistent to avoid parallax dizziness; The P light and the S light are amplified by using a magnifying reflector to ensure that the first image and the second image have the same frame at the human eye.

2. The naked eye 3D implementation method according to claim 1, characterized in that: The selection of the polarization direction of the TFT-LCD display source is based on the following steps: Calculate the component energies of the light emitted by the TFT-LCD display source in the horizontal and vertical directions, which are E h and E v ; Let the component energies satisfy the following conditions: , where E represents the amplitude intensity of the TFT-LCD display source in the direction of 135° or 45°; The polarization direction of the TFT-LCD display source is adjusted so that the energy intensities of the P light and the S light are consistent, so as to ensure the consistency of brightness of the first image and the second image.

3. The naked eye 3D implementation method according to claim 1, characterized in that: The steps for determining the transmission characteristics and reflection characteristics of the polarization beam splitter converter are as follows: Calculating the angle θ between the polarization direction of the polarization beam splitter converter and the polarization direction of the TFT-LCD display source; Let the angle satisfy the following conditions: ,in, ; The angle is adjusted so that the polarization beam splitter converter separates the P light and the S light, so as to enhance the depth of field of the first image and the second image.

4. The naked eye 3D implementation method according to claim 1, characterized in that: The adjustment steps of the optical path are: Calculating an optical path difference ΔL between the P light and the S light; Let the optical path difference satisfy the following conditions: , where α is the inclination angle of the polarization beam splitter converter, and h is the distance between the polarization beam splitter converter and the reflector in the same vertical direction; The position and angle of the polarization beam splitter converter are adjusted so that the optical path difference reaches a desired value, so as to achieve inconsistent depths of field between the first image and the second image.

5. The naked eye 3D implementation method according to claim 1, characterized in that: The steps of adjusting the angle of the reflector are as follows: Calculate the incident angle and the outgoing angle of the P light and the S light, which are θ1 and θ2 respectively; The incident angle and the outgoing angle satisfy the following conditions: ,in, ; The angle of the reflector is adjusted so that the optical axis directions of the P light and the S light remain consistent at the human eye to avoid parallax.

6. The naked eye 3D implementation method according to claim 1, characterized in that: The adjustment steps to keep the optical axis direction consistent are: Calculate the offsets δ1 and δ2 of the P light and the S light at the reflector; Let the offset satisfy the following conditions: ,in, ; The angle of the reflector is adjusted until the offset reaches a desired value, so as to ensure that the optical axis directions of the P light and the S light are consistent.

7. The naked eye 3D implementation method according to claim 1, characterized in that: The magnification A of the magnifying reflector is determined by the following steps: Calculating the frame sizes of the first image and the second image, which are H1 and H2 respectively; Let the magnification satisfy the following conditions: , , where V ID1 and V ID2 are the distances from the first image to the human eye and the second image to the human eye, H FOV is the horizontal field of view; The magnification of the magnifying reflector is adjusted to make the frames of the first image and the second image consistent.

8. A naked eye 3D realization system, characterized in that: The system comprises: A TFT-LCD display source with a polarization direction of 135° or 45° for emitting a source image; Two polarization beam splitter converters, respectively used to separate the P light and the S light emitted by the TFT-LCD display source, so that the P light and the S light enter different optical paths; Two reflectors, respectively used to fold the optical paths of the P light and the S light and change the light emission directions so that both of them finally enter the human eye; A magnifying reflector, used to amplify the P light and the S light to ensure that the two images have the same frame at the human eye; A control unit is used to adjust the angles of the PBS conversion device and the reflector so that the optical axis directions of the P light and the S light remain consistent at the human eye to avoid parallax.

9. A naked-eye 3D realization device, comprising the naked-eye 3D realization system according to claim 8, characterized in that: The device also includes: A user sensor, used to detect the viewing distance and viewing angle of the user, so as to adaptively adjust the relative position and angle of the polarization beam splitter converter and the reflector; An image processor, configured to adjust the output image of the display source according to the data of the user sensor, and optimize the display effects of the first image and the second image; A display panel, used for displaying the first image and the second image, so as to ensure that a three-dimensional image can be seen without wearing any tool; A power module, used to provide power to the device; A housing is used to protect the device.

10. A storage medium, characterized in that: A computer-readable program is stored on the storage medium. When the program is executed by a processor, the computer executes the naked-eye 3D implementation method according to any one of claims 1 to 7.

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