Double-vision integrated imaging 3D display method and device

Abstract

According to the double-vision integrated imaging 3D display method and device, naked-eye double-vision 3D display is achieved, the reconstructed 3D image has high brightness, and the 3D display structure is simple. Taking micro-image array 3D image information I displayed by projection display equipment as first image information; taking micro-image array 3D image information II displayed by the projection display equipment as second image information; the first image information and the second image information are precisely coupled with the 3D display module, so that the 3D display module reconstructs the acquired image information, and the 3D image information I and the 3D image information II reconstruct a 3D image I in the display area I and a 3D image II in the display area II respectively. The 3D display module is composed of a polarization converter, a quarter-wave plate, a geometric phase lens array, a dynamic adjustable wave plate and a liquid crystal polarization grating. Wherein the polarization converter, the quarter-wave plate, the geometric phase lens array, the dynamic adjustable wave plate and the liquid crystal polarization grating are tightly attached in sequence.

Description

Technical Field

[0001] This invention relates to 3D display, and more specifically, to a dual-view integrated imaging 3D display method and apparatus. Background Technology

[0002] Integrated imaging 3D display is considered one of the most promising glasses-free 3D display technologies, offering advantages such as quasi-continuous viewing points and the elimination of the need for wearing devices. Currently, some unique application scenarios place new demands on integrated imaging 3D displays. For example, during surgery, doctors need to see the surgical scene on the integrated imaging 3D display, while nurses need to see medical surgical information. Similarly, taxi drivers need to see real-time traffic navigation information on the integrated imaging 3D display, while passengers in adjacent seats want to see entertainment information. This necessitates that integrated imaging 3D displays can achieve dual-view 3D display, simultaneously meeting the needs of different viewers.

[0003] Existing Chinese invention patents CN202410161049.9, CN202410161058.8, CN202410161072.8, and CN202410161053.5 all require the use of polarized glasses to achieve dual-view 3D display. Wearing polarized glasses reduces the brightness of the 3D image and restricts the viewer's vision. Therefore, there is an urgent need for a dual-view integrated imaging 3D display method and device that can achieve naked-eye dual-view 3D display, reconstruct 3D images with high brightness, and has a simple and easy-to-implement 3D display structure. Summary of the Invention

[0004] The technical problem this invention aims to solve is to propose a dual-view integrated imaging 3D display method and device to achieve naked-eye dual-view 3D display, reconstructing 3D images with high brightness and a simple 3D display structure. By time-division multiplexing, 3D image I is reconstructed in display area I during display state one, and 3D image II is reconstructed in display area II during display state two. Thus, viewer I in display area I can view 3D image I, and viewer II in display area II can view 3D image II.

[0005] To address the aforementioned technical problems, this invention proposes a dual-view integrated imaging 3D display method, the method comprising: The micro-image array 3D image information I displayed by the projection display device is used as the first image information; The micro-image array 3D image information II displayed by the projection display device is used as the second image information; The first image information and the second image information are precisely coupled with the 3D display module so that the 3D display module can reconstruct the acquired image information and reconstruct 3D image information I and 3D image information II in display area I and display area II, respectively.

[0006] The 3D display module consists of a polarization converter, a quarter-wave plate, a geometric phase lens array, a dynamically adjustable waveplate, and a liquid crystal polarization grating. The polarization converter, quarter-wave plate, geometric phase lens array, dynamically adjustable waveplate, and liquid crystal polarization grating are sequentially and tightly bonded together.

[0007] In display state one, the projection display device displays first image information. The polarization converter converts the light displayed by the projection information device into horizontally polarized light. After passing through a quarter-wave plate, the horizontally polarized light is converted into left-handed circularly polarized light. The left-handed circularly polarized light enters the geometric phase lens array, which at this time has the optical characteristics of a convex lens array. The first image information and the geometric phase lens array are precisely coupled to reconstruct the 3D image I. Afterward, the left-handed circularly polarized light is converted into right-handed circularly polarized light after passing through the geometric phase lens array. The right-handed circularly polarized light passes through a dynamically adjustable waveplate. At this time, by adjusting the voltage applied to the dynamically adjustable waveplate, the phase delay of the dynamically adjustable waveplate is made to 0, i.e. d =0, right-hand circularly polarized light remains right-hand circularly polarized after passing through a dynamically adjustable waveplate. Then, the right-hand circularly polarized light passes through a liquid crystal polarization grating, which deflects the incident right-hand circularly polarized light. i 1. Rear emission, i.e., the liquid crystal polarizing grating deflects the reconstructed 3D image I. i The image is then reconstructed within display area I. This allows viewers I within display area I to view the 3D image I.

[0008] In display state two, the projection display device displays the second image information. The polarization converter still converts the light displayed by the projection information device into horizontally polarized light. After passing through a quarter-wave plate, the horizontally polarized light is converted into left-handed circularly polarized light. The left-handed circularly polarized light enters the geometric phase lens array, which at this time has the optical characteristics of a convex lens array. The second image information and the geometric phase lens array are precisely coupled to reconstruct the 3D image II. Afterward, the left-handed circularly polarized light is converted into right-handed circularly polarized light after passing through the geometric phase lens array. The right-handed circularly polarized light passes through a dynamically adjustable waveplate. At this time, by adjusting the voltage applied to the dynamically adjustable waveplate, the phase delay of the dynamically adjustable waveplate is... l / 2, that is d = l / 2, Right-hand circularly polarized light is converted into left-hand circularly polarized light after passing through a dynamically adjustable waveplate. The left-hand circularly polarized light then passes through a liquid crystal polarization grating, which deflects the incident left-hand circularly polarized light. i 2. Rear emission, i.e., the liquid crystal polarizing grating deflects the reconstructed 3D image II. i The 2nd image is then reconstructed within display area II. This allows viewers II within display area II to view the 3D image II.

[0009] Display state one and display state two are displayed alternately in sequence. When the refresh rate reaches the persistence of vision, the viewer can see 3D images in both display area I and display area II. Moreover, the 3D images displayed in display area I and display area II are not the same, thus achieving naked-eye dual-view 3D display.

[0010] Preferably, the projection display device can be an LCD display screen, an OLED display screen, a Micro-LED display screen, etc.

[0011] Preferably, the polarization converter can be a manually rotatable linear polarizer or an electrically controlled liquid crystal polarization converter, etc.

[0012] Preferably, the lens elements in the geometric phase lens array can have the same or different dimensions; Preferably, the liquid crystal polarizing grating deflects left-handed circularly polarized light when it passes through. i 1. After exiting, it deflects the right-handed circularly polarized light as it passes by. i 2. Launched afterward, with an angle i 1 and i 2. They are symmetrical in the horizontal direction.

[0013] Preferably, the light deflection angle i 1 and i 2 must be satisfied i 1>arctan( p / 2 g ), i 2>arctan( p / 2 g This ensures that display area I and display area II do not overlap in the horizontal direction, thus preventing crosstalk between the reconstructed 3D image I and 3D image II. p The pitch of the lens elements in the lens array. g This is the distance between the lens array and the projection display device.

[0014] According to another aspect of the present invention, a dual-view integrated imaging 3D display device is provided, comprising a projection display device and a 3D display module, wherein: The projection display device is used to project micro-image array 3D image information I and micro-image array 3D image information II onto the 3D display module. The 3D display module consists of a polarization converter, a quarter-wave plate, a geometric phase lens array, a dynamically adjustable waveplate, and a liquid crystal polarization grating, which are tightly bonded together in sequence.

[0015] In display state one, the projection display device displays first image information. The polarization converter converts the light displayed by the projection information device into horizontally polarized light. After passing through a quarter-wave plate, the horizontally polarized light is converted into left-handed circularly polarized light. The left-handed circularly polarized light enters the geometric phase lens array, which at this time has the optical characteristics of a convex lens array. The first image information and the geometric phase lens array are precisely coupled to reconstruct the 3D image I. Afterward, the left-handed circularly polarized light is converted into right-handed circularly polarized light after passing through the geometric phase lens array. The right-handed circularly polarized light passes through a dynamically adjustable waveplate. At this time, by adjusting the voltage applied to the dynamically adjustable waveplate, the phase delay of the dynamically adjustable waveplate is made to 0, i.e. d =0, right-hand circularly polarized light remains right-hand circularly polarized after passing through a dynamically adjustable waveplate. Then, the right-hand circularly polarized light passes through a liquid crystal polarization grating, which deflects the incident right-hand circularly polarized light. i 1. Rear emission, i.e., the liquid crystal polarizing grating deflects the reconstructed 3D image I. i The 3D image is then reconstructed within display area I. This allows viewers I within display area I to view the 3D image I, as shown in the attached diagram. Figure 2 As shown.

[0016] In display state two, the projection display device displays the second image information. The polarization converter still converts the light displayed by the projection information device into horizontally polarized light. After passing through a quarter-wave plate, the horizontally polarized light is converted into left-handed circularly polarized light. The left-handed circularly polarized light enters the geometric phase lens array, which at this time has the optical characteristics of a convex lens array. The second image information and the geometric phase lens array are precisely coupled to reconstruct the 3D image II. Afterward, the left-handed circularly polarized light is converted into right-handed circularly polarized light after passing through the geometric phase lens array. The right-handed circularly polarized light passes through a dynamically adjustable waveplate. At this time, by adjusting the voltage applied to the dynamically adjustable waveplate, the phase delay of the dynamically adjustable waveplate is... l / 2, that is d = l / 2, Right-hand circularly polarized light is converted into left-hand circularly polarized light after passing through a dynamically adjustable waveplate. The left-hand circularly polarized light then passes through a liquid crystal polarization grating, which deflects the incident left-hand circularly polarized light. i 2. Rear emission, i.e., the liquid crystal polarizing grating deflects the reconstructed 3D image II. iThe 2nd reconstruction is then performed within display area II. This allows viewers II within display area II to view the 3D image II, as shown in the attached diagram. Figure 3 As shown.

[0017] Display state one and display state two are displayed alternately in sequence. When the refresh rate reaches the persistence of vision, the viewer can see 3D images in both display area I and display area II. Moreover, the 3D images displayed in display area I and display area II are not the same, thus achieving naked-eye dual-view 3D display.

[0018] Preferably, the projection display device can be an LCD display screen, an OLED display screen, a Micro-LED display screen, etc.

[0019] Preferably, the polarization converter can be a manually rotatable linear polarizer or an electrically controlled liquid crystal polarization converter, etc.

[0020] Preferably, the lens elements in the geometric phase lens array can have the same or different dimensions; Preferably, the liquid crystal polarizing grating deflects left-handed circularly polarized light when it passes through. i 1. After exiting, it deflects the right-handed circularly polarized light as it passes by. i 2. Launched afterward, with an angle i 1 and i 2. They are symmetrical in the horizontal direction.

[0021] Preferably, the light deflection angle i 1 and i 2 must be satisfied i 1>arctan( p / 2 g ), i 2>arctan( p / 2 g This ensures that display area I and display area II do not overlap in the horizontal direction, thus preventing crosstalk between the reconstructed 3D image I and 3D image II. p The pitch of the lens elements in the lens array. g This is the distance between the lens array and the projection display device.

[0022] This invention proposes a dual-view integrated imaging 3D display method and device. By introducing devices such as polarization converter, geometric phase lens array, dynamically adjustable waveplate and liquid crystal polarization grating to form a 3D display module, 3D image I and 3D image II are reconstructed in different display areas based on the polarization characteristics of light under time-division multiplexing. Its structure is simple and the brightness of the reconstructed 3D image is high. Attached Figure Description

[0023] Appendix Figure 1 This is a flowchart of a dual-view integrated imaging 3D display method proposed in this invention.

[0024] Appendix Figure 2 This is a schematic diagram of the structure of a dual-view integrated imaging 3D display device proposed in this invention when reconstructing a 3D image I within the display area I.

[0025] Appendix Figure 3 This is a schematic diagram of the structure of a dual-view integrated imaging 3D display device proposed in this invention when reconstructing a 3D image II within display area II.

[0026] Appendix Figure 4 This is a schematic diagram of the structure of a dual-view integrated imaging 3D display device proposed in this invention, which simultaneously displays 3D image I and 3D image II.

[0027] Appendix Figure 5 This is a schematic diagram of the optical path structure principle of a dual-view integrated imaging 3D display device proposed in this invention when simultaneously displaying 3D image I and 3D image II.

[0028] The figure labels in the above figures are: 1. Projection display device; 2. 3D display module; 3. Polarization converter; 4. Quarter-wave plate; 5. Geometric phase lens array; 6. Dynamically adjustable waveplate; 7. Liquid crystal polarization grating; 8. Horizontally polarized light; 9. Left-handed circularly polarized light; 10. Display area I; 11. 3D image I; 12. Viewer I; 13. Display area II; 14. 3D image II; 15. Viewer II.

[0029] It should be understood that the above figures are only schematic and are not drawn to scale. Detailed Implementation

[0030] The following detailed description of a typical embodiment of the dual-view integrated imaging 3D display method and apparatus of the present invention further clarifies the present invention. It is necessary to point out that the following embodiments are only used for further illustration of the present invention and should not be construed as limiting the scope of protection of the present invention. Any non-essential improvements and adjustments made to the present invention by those skilled in the art based on the above description still fall within the scope of protection of the present invention.

[0031] The following description, in conjunction with the embodiments and accompanying drawings disclosed in this application, describes a dual-view integrated imaging 3D display method proposed in this application. (Appendix) Figure 1 A flowchart of a dual-view integrated imaging 3D display method according to an embodiment of this application is shown, the method comprising: The 3D image information I of the micro-image array displayed by the projection display device 1 is used as the first image information; the 3D image information II of the micro-image array displayed by the projection display device 1 is used as the second image information; preferably, the projection display device 1 uses an LCD display panel with a resolution of 7680×4320. The first image information and the second image information are precisely coupled with the 3D display module 2 so that the 3D display module 2 can reconstruct the acquired image information, and reconstruct 3D image information I and 3D image information II into 3D image I11 in display area I10 and 3D image II14 in display area II13, respectively, as shown in the attached figure. Figure 1 The 3D display module 2 comprises a polarization converter 3, a quarter-wave plate 4, a geometric phase lens array 5, a dynamically adjustable waveplate 6, and a liquid crystal polarization grating 7. Preferably, the polarization converter 3 is a TN-type liquid crystal cell, the geometric phase lens array 5 has a pitch of 30 μm, a lens element focal length of 5 mm, and the lens element is a square lens; the liquid crystal polarization grating 7 deflects the outgoing light when left-handed circularly polarized light enters it. i 1=10°, when right-hand circularly polarized light enters the liquid crystal polarizing grating 7, the outgoing light is deflected. i 2 = 10°, where the deflection angle is... i 1 and i 2. They are symmetrical in the horizontal direction. Among them, the polarization converter 3, quarter-wave plate 4, geometric phase lens array 5, dynamically adjustable waveplate 6, and liquid crystal polarization grating 7 are closely attached in sequence.

[0032] In one embodiment, during display state one, the projection display device 1 displays first image information. The polarization converter 3 converts the light displayed by the projection information device into horizontally polarized light 8. The horizontally polarized light 8 is converted into left-hand circularly polarized light 9 after passing through a quarter-wave plate 4. The left-hand circularly polarized light 9 enters the geometric phase lens array 5. At this time, the geometric phase lens array 5 has the optical characteristics of a convex lens array, and its lens element has a focal length of 5mm. The first image information is precisely coupled with the geometric phase lens array 5 to reconstruct a 3D image I11. Afterward, the left-hand circularly polarized light 9 is converted into right-hand circularly polarized light after passing through the geometric phase lens array 5. The right-hand circularly polarized light passes through a dynamically adjustable waveplate 6. At this time, by adjusting the voltage applied to the dynamically adjustable waveplate 6, the phase delay of the dynamically adjustable waveplate 6 is made to be 0, i.e. d =0, the right-hand circularly polarized light remains right-hand circularly polarized after passing through the dynamically adjustable waveplate 6. Then, the right-hand circularly polarized light passes through the liquid crystal polarization grating 7, which deflects the incident right-hand circularly polarized light. i After I=10°, the image is emitted, meaning the liquid crystal polarizing grating 7 deflects the reconstructed 3D image I11. i After 1=10°, the image is reconstructed within the display area I10. Thus, the viewer I12 within the display area I10 can view the 3D image I11, as shown in the attached diagram. Figure 2 As shown.

[0033] In one embodiment, during display state two, the projection display device 1 displays second image information. The polarization converter 3 still converts the light displayed by the projection information device into horizontally polarized light. This horizontally polarized light passes through a quarter-wave plate 4 and is then converted into left-hand circularly polarized light 9. The left-hand circularly polarized light 9 enters the geometrical phase lens array 5, which possesses the optical characteristics of a convex lens array. The focal length of each lens element is 5mm. The second image information is precisely coupled with the geometrical phase lens array 5 to reconstruct a 3D image II14. Afterward, the left-hand circularly polarized light 9 passes through the geometrical phase lens array 5 and is converted into right-hand circularly polarized light. This right-hand circularly polarized light passes through a dynamically adjustable waveplate 6. At this time, by adjusting the voltage applied to the dynamically adjustable waveplate 6, the phase delay of the dynamically adjustable waveplate 6 is adjusted. l / 2, that is d = l / 2, Right-hand circularly polarized light is converted into left-hand circularly polarized light 9 after passing through the dynamically adjustable waveplate 6. Subsequently, the left-hand circularly polarized light 9 passes through the liquid crystal polarization grating 7, which deflects the incident left-hand circularly polarized light 9. i After 2=10°, the image is emitted, meaning the liquid crystal polarizing grating 7 deflects the reconstructed 3D image II14. i After 2=10°, the image is reconstructed within display area II13. Thus, the viewer II15 within display area II13 can view the 3D image II14, as shown in the attached diagram. Figure 3 As shown.

[0034] In display state one and display state two, the timing is alternated sequentially. When the refresh rate reaches the persistence of vision, the viewer can see 3D images in both display area I10 and display area II13. Furthermore, the 3D images displayed in display area I10 and display area II13 are not the same, ultimately achieving naked-eye dual-view 3D display, as shown in the attached figure. Figure 4 As shown.

[0035] Preferably, the projection display device 1 can be an LCD screen, an OLED screen, a Micro-LED screen, etc.; the polarization converter 3 can be a manually rotated linear polarizer or an electrically controlled liquid crystal polarization converter 3, etc.; the lens elements in the geometric phase lens array 5 can have the same or different sizes; the liquid crystal polarization grating 7 deflects the light when left-handed circularly polarized light 9 passes through. i After 1=10°, the emitted light will deflect when right-handed circularly polarized light passes by. i After 2 = 10°, it is launched, where the angle is... i 1 and i 2. They are symmetrical in the horizontal direction. The deflection angle must satisfy... i1>arctan( p / 2 g ), i 2>arctan( p / 2 g This ensures that display areas I10 and II13 do not overlap in the horizontal direction, thus preventing crosstalk between the reconstructed 3D images I11 and II14, as shown in the attached diagram. Figure 5 As shown. Among them, p The pitch of the lens elements in the lens array. g The distance between the lens array and the projection display device 1 is denoted as .

[0036] A dual-view integrated imaging 3D display device according to an embodiment of this application includes a projection display device 1 and a 3D display module 2, wherein: The projection display device 1 is used to project micro-image array 3D image information I and micro-image array 3D image information II onto the 3D display module 2; the 3D display module 2 is composed of a polarization converter 3, a quarter-wave plate 4, a geometric phase lens array 5, a dynamically adjustable waveplate 6, and a liquid crystal polarization grating 7, which are tightly bonded together in sequence.

[0037] In display state one, the projection display device 1 displays the first image information. The polarization converter 3 converts the light displayed by the projection information device into horizontally polarized light. The horizontally polarized light passes through a quarter-wave plate 4 and is converted into left-hand circularly polarized light 9. The left-hand circularly polarized light 9 enters the geometric phase lens array 5. At this time, the geometric phase lens array 5 has the optical characteristics of a convex lens array, and the focal length of its lens element is 5mm. The first image information and the geometric phase lens array 5 are precisely coupled to reconstruct the 3D image I11. Afterward, the left-hand circularly polarized light 9 passes through the geometric phase lens array 5 and is converted into right-hand circularly polarized light. The right-hand circularly polarized light passes through a dynamically adjustable waveplate 6. At this time, by adjusting the voltage applied to the dynamically adjustable waveplate 6, the phase delay of the dynamically adjustable waveplate 6 is made to be 0, that is... d =0, the right-hand circularly polarized light remains right-hand circularly polarized after passing through the dynamically adjustable waveplate 6. Then, the right-hand circularly polarized light passes through the liquid crystal polarization grating 7, which deflects the incident right-hand circularly polarized light. i After I=10°, the image is emitted, meaning the liquid crystal polarizing grating 7 deflects the reconstructed 3D image I11. i After 1=10°, the image is reconstructed within the display area I10. Thus, the viewer I12 within the display area I10 can view the 3D image I11, as shown in the attached diagram. Figure 2 As shown.

[0038] In display state two, the projection display device 1 displays the second image information. The polarization converter 3 still converts the light displayed by the projection information device into horizontally polarized light. The horizontally polarized light is converted into left-hand circularly polarized light 9 after passing through the quarter-wave plate 4. The left-hand circularly polarized light 9 enters the geometric phase lens array 5. At this time, the geometric phase lens array 5 has the optical characteristics of a convex lens array, where the focal length of the lens element is 5mm. The second image information is precisely coupled with the geometric phase lens array 5 to reconstruct the 3D image II14. Afterward, the left-hand circularly polarized light 9 is converted into right-hand circularly polarized light after passing through the geometric phase lens array 5. The right-hand circularly polarized light passes through the dynamically adjustable waveplate 6. At this time, by adjusting the voltage applied to the dynamically adjustable waveplate 6, the phase delay of the dynamically adjustable waveplate 6 is made to be... l / 2, that is d = l / 2, Right-hand circularly polarized light is converted into left-hand circularly polarized light 9 after passing through the dynamically adjustable waveplate 6. Subsequently, the left-hand circularly polarized light 9 passes through the liquid crystal polarization grating 7, which deflects the incident left-hand circularly polarized light 9. i After 2=10°, the image is emitted, meaning the liquid crystal polarizing grating 7 deflects the reconstructed 3D image II14. i After 2=10°, the image is reconstructed within display area II13. Thus, the viewer II15 within display area II13 can view the 3D image II14, as shown in the attached diagram. Figure 3 As shown.

[0039] Preferably, the projection display device 1 can be an LCD screen, an OLED screen, a Micro-LED screen, etc.; the polarization converter 3 can be a manually rotated linear polarizer or an electrically controlled liquid crystal polarization converter 3, etc.; the lens elements in the geometric phase lens array 5 can have the same or different sizes; the liquid crystal polarization grating 7 deflects the light when left-handed circularly polarized light 9 passes through. i After 1=10°, the emitted light will deflect when right-handed circularly polarized light passes by. i After 2 = 10°, it is launched, where the angle is... i 1 and i 2. They are symmetrical in the horizontal direction. The deflection angle must satisfy... i 1>arctan( p / 2 g ), i 2>arctan( p / 2 g This ensures that display areas I10 and II13 do not overlap in the horizontal direction, thus preventing crosstalk between the reconstructed 3D images I11 and II14, as shown in the attached diagram. Figure 5 As shown. Among them, p The pitch of the lens elements in the lens array. gThe distance between the lens array and the projection display device 1 is denoted as .

Claims

1. A dual-view integrated imaging 3D display method, characterized in that, The method includes: The micro-image array 3D image information I displayed by the projection display device is used as the first image information; The micro-image array 3D image information II displayed by the projection display device is used as the second image information; The first image information and the second image information are precisely coupled with the 3D display module so that the 3D display module can reconstruct the acquired image information and reconstruct 3D image information I and 3D image information II in display area I and display area II, respectively. The 3D display module comprises a polarization converter, a quarter-wave plate, a geometric phase lens array, a dynamically adjustable waveplate, and a liquid crystal polarization grating. The polarization converter, quarter-wave plate, geometric phase lens array, dynamically adjustable waveplate, and liquid crystal polarization grating are sequentially and tightly bonded together. In display state one, the projection display device displays first image information. The polarization converter converts the light displayed by the projection information device into horizontally polarized light. After passing through a quarter-wave plate, the horizontally polarized light is converted into left-handed circularly polarized light. The left-handed circularly polarized light enters the geometric phase lens array, which at this time has the optical characteristics of a convex lens array. The first image information and the geometric phase lens array are precisely coupled to reconstruct the 3D image I. Afterward, the left-handed circularly polarized light is converted into right-handed circularly polarized light after passing through the geometric phase lens array. The right-handed circularly polarized light passes through a dynamically adjustable waveplate. At this time, by adjusting the voltage applied to the dynamically adjustable waveplate, the phase delay of the dynamically adjustable waveplate is made to be 0, i.e. δ =0, right-hand circularly polarized light remains right-hand circularly polarized after passing through a dynamically adjustable waveplate. Then, the right-hand circularly polarized light passes through a liquid crystal polarization grating, which deflects the incident right-hand circularly polarized light. θ 1. Rear emission, i.e., the liquid crystal polarizing grating deflects the reconstructed 3D image I. θ The image is then reconstructed within display area I; thus, viewers within display area I can view the 3D image I. In display state two, the projection display device displays the second image information. The polarization converter still converts the light displayed by the projection information device into horizontally polarized light. After passing through a quarter-wave plate, the horizontally polarized light is converted into left-handed circularly polarized light. The left-handed circularly polarized light enters the geometric phase lens array, which at this time has the optical characteristics of a convex lens array. The second image information and the geometric phase lens array are precisely coupled to reconstruct the 3D image II. Afterward, the left-handed circularly polarized light is converted into right-handed circularly polarized light after passing through the geometric phase lens array. The right-handed circularly polarized light passes through a dynamically adjustable waveplate. At this time, by adjusting the voltage applied to the dynamically adjustable waveplate, the phase delay of the dynamically adjustable waveplate is made to be... λ / 2, that is δ = λ / 2, Right-hand circularly polarized light is converted into left-hand circularly polarized light after passing through a dynamically adjustable waveplate. The left-hand circularly polarized light then passes through a liquid crystal polarization grating, which deflects the incident left-hand circularly polarized light. θ 2. Rear emission, i.e., the liquid crystal polarizing grating deflects the reconstructed 3D image II. θ The 2nd image is reconstructed within display area II; thus, viewers within display area II can view the 3D image II. Display state one and display state two are displayed alternately in sequence. When the refresh rate reaches the persistence of vision, the viewer can see 3D images in both display area I and display area II. Moreover, the 3D images displayed in display area I and display area II are not the same, thus achieving naked-eye dual-view 3D display.

2. The method as described in claim 1, characterized in that, The projection display device can be an LCD screen, an OLED screen, a Micro-LED screen, etc.

3. The method as described in claim 1, characterized in that, The polarization converter can be a manually rotated linear polarizer or an electrically controlled liquid crystal polarization converter, etc.

4. The method as described in claim 1, characterized in that, The lens elements in the geometric phase lens array can have the same or different dimensions.

5. The method as described in claim 1, characterized in that, The liquid crystal polarization grating deflects left-handed circularly polarized light when it passes through. θ 1. After exiting, it deflects the right-handed circularly polarized light as it passes by. θ 2. Launched afterward, with an angle θ 1 and θ 2. They are symmetrical in the horizontal direction.

6. The method as described in claim 1, characterized in that, The angle of light deflection θ 1 and θ 2 must be satisfied θ 1>arctan( p / 2 g ), θ 2>arctan( p / 2 g This ensures that display area I and display area II do not overlap in the horizontal direction, thus preventing crosstalk between the reconstructed 3D image I and 3D image II; among which, p The pitch of the lens elements in the lens array. g This is the distance between the lens array and the projection display device.

7. A dual-view integrated imaging 3D display device, characterized in that, This includes projection display devices and 3D display modules, among which: The projection display device is used to project micro-image array 3D image information I and micro-image array 3D image information II onto the 3D display module. The 3D display module consists of a polarization converter, a quarter-wave plate, a geometric phase lens array, a dynamically adjustable wave plate, and a liquid crystal polarization grating, which are tightly bonded together in sequence. In display state one, the projection display device displays first image information. The polarization converter converts the light displayed by the projection information device into horizontally polarized light. After passing through a quarter-wave plate, the horizontally polarized light is converted into left-handed circularly polarized light. The left-handed circularly polarized light enters the geometric phase lens array, which at this time has the optical characteristics of a convex lens array. The first image information and the geometric phase lens array are precisely coupled to reconstruct the 3D image I. Afterward, the left-handed circularly polarized light is converted into right-handed circularly polarized light after passing through the geometric phase lens array. The right-handed circularly polarized light passes through a dynamically adjustable waveplate. At this time, by adjusting the voltage applied to the dynamically adjustable waveplate, the phase delay of the dynamically adjustable waveplate is made to be 0, i.e. δ =0, right-hand circularly polarized light remains right-hand circularly polarized after passing through a dynamically adjustable waveplate. Then, the right-hand circularly polarized light passes through a liquid crystal polarization grating, which deflects the incident right-hand circularly polarized light. θ 1. Rear emission, i.e., the liquid crystal polarizing grating deflects the reconstructed 3D image I. θ The image is then reconstructed within display area I; thus, viewers within display area I can view the 3D image I, as shown in Figure 2. In display state two, the projection display device displays the second image information. The polarization converter still converts the light displayed by the projection information device into horizontally polarized light. After passing through a quarter-wave plate, the horizontally polarized light is converted into left-handed circularly polarized light. The left-handed circularly polarized light enters the geometric phase lens array, which at this time has the optical characteristics of a convex lens array. The second image information and the geometric phase lens array are precisely coupled to reconstruct the 3D image II. Afterward, the left-handed circularly polarized light is converted into right-handed circularly polarized light after passing through the geometric phase lens array. The right-handed circularly polarized light passes through a dynamically adjustable waveplate. At this time, by adjusting the voltage applied to the dynamically adjustable waveplate, the phase delay of the dynamically adjustable waveplate is made to be... λ / 2, that is δ = λ / 2, Right-hand circularly polarized light is converted into left-hand circularly polarized light after passing through a dynamically adjustable waveplate. The left-hand circularly polarized light then passes through a liquid crystal polarization grating, which deflects the incident left-hand circularly polarized light. θ 2. Rear emission, i.e., the liquid crystal polarizing grating deflects the reconstructed 3D image II. θ 2. The image is then reconstructed within display area II; thus, viewers within display area II can view the 3D image II, as shown in Figure 3. Display state one and display state two are displayed alternately in sequence. When the refresh rate reaches the persistence of vision, the viewer can see 3D images in both display area I and display area II. Moreover, the 3D images displayed in display area I and display area II are not the same, thus achieving naked-eye dual-view 3D display.

8. The apparatus of claim 7, wherein the projection display device may be an LCD display screen, an OLED display screen, a Micro-LED display screen, etc.

9. The apparatus as described in claim 7, wherein the polarization converter can be a manually rotatable linear polarizer or an electrically controlled liquid crystal polarization converter, etc.

10. The apparatus of claim 7, wherein the lens elements in the geometric phase lens array may have the same or different dimensions.

11. The apparatus of claim 7, wherein the liquid crystal polarizing grating deflects left-handed circularly polarized light when it passes through. θ 1. After exiting, it deflects the right-handed circularly polarized light as it passes by. θ 2. Launched afterward, with an angle θ 1 and θ 2. They are symmetrical in the horizontal direction.

12. The apparatus of claim 7, wherein the light deflection angle θ 1 and θ 2 must be satisfied θ 1>arctan( p / 2 g ), θ 2>arctan( p / 2 g This ensures that display area I and display area II do not overlap in the horizontal direction, thus preventing crosstalk between the reconstructed 3D image I and 3D image II; among which, p The pitch of the lens elements in the lens array. g This is the distance between the lens array and the projection display device.

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