Display device

Abstract

The display device comprises a support component, a display screen connected with the support component, the display screen being integrated with a light modulation element, the support component comprising an image generating device and a free curved surface device, wherein the image generating device is used for generating an image and projecting the image to the free curved surface device based on a first incident direction; the free curved surface device is used for modulating the direction of the image light to deflect the first incident direction to a first exit direction and projecting the image to the light modulation element based on the first exit direction; and the light modulation element is used for assisting the display screen to display the image. The display field of view of the display device can be effectively improved without introducing too many additional components, so that the image display effect can be effectively improved, and the image light can be directly displayed after the direction of the image light is modulated, so that the optical energy loss can be greatly reduced and the visual imaging effect of the image light can be improved.

Description

Technical Field

[0001] This disclosure relates to the field of mixed reality technology, and more particularly to a display device. Background Technology

[0002] In related technologies, augmented reality-based display devices typically employ optical waveguide-based designs to achieve the display.

[0003] In this method, the farther the light travels in the waveguide, the more severe the energy loss caused by absorption and partial total internal reflection. At the same time, in order to avoid light leakage, a light-blocking plate needs to be added. The light-blocking plate increases the size of the display device to a certain extent and limits the expansion of the field of view. Summary of the Invention

[0004] This disclosure aims to at least partially address one of the technical problems in the related art.

[0005] Therefore, the purpose of this disclosure is to provide a display device that can effectively increase the display field of view of the display device without introducing too many additional components, thereby effectively improving the image display effect. Furthermore, it can directly display the image after modulating the direction of the image light, thereby greatly reducing optical energy loss and improving the visual imaging effect of the image light.

[0006] To achieve the above objectives, the display device proposed in this disclosure includes: a support component; a display screen connected to the support component, the display screen integrating an optical modulation element; the support component includes: an image generating device and a freeform surface device; wherein, the image generating device is used to generate an image and project the image onto the freeform surface device based on a first incident direction; the freeform surface device is used to modulate the direction of the image light to deflect the first incident direction into a first exit direction, and project the image onto the optical modulation element based on the first exit direction; the optical modulation element is used to assist the display screen in displaying the image.

[0007] The display device proposed in this embodiment includes a support component and a display screen connected to the support component. The display screen integrates an optical modulation element. The support component includes an image generating device and a freeform surface device. The image generating device is used to generate an image and project the image onto the freeform surface device based on a first incident direction. The freeform surface device is used to modulate the direction of the image light to deflect the first incident direction into a first exit direction and project the image onto the optical modulation element based on the first exit direction. The optical modulation element is used to assist the display screen in displaying the image. It can effectively improve the display field of view of the display device without introducing too many additional components, thereby effectively improving the image display effect. Furthermore, it can directly display the image after modulating the direction of the image light, thereby greatly reducing optical energy loss and improving the visual imaging effect of the image light.

[0008] Additional aspects and advantages of this disclosure will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this disclosure. Attached Figure Description

[0009] The above and / or additional aspects and advantages of this disclosure will become apparent and readily understood from the following description of the embodiments taken in conjunction with the accompanying drawings, in which:

[0010] Figure 1 This is a schematic diagram of the structure of a display device according to an embodiment of the present disclosure;

[0011] Figure 2 This is a schematic diagram of the structure of a display device according to an embodiment of the present disclosure;

[0012] Figure 3 This is a schematic diagram of the structure of a display device according to another embodiment of this disclosure;

[0013] Figure 4 This is a schematic diagram of the structure of the AR glasses display device proposed in the embodiments of this disclosure;

[0014] Figure 5 This is a schematic diagram of the structure of the head-up digital display (HUD) proposed in an embodiment of this disclosure; Detailed Implementation

[0015] Embodiments of this disclosure are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are used only to explain this disclosure, and should not be construed as limiting this disclosure. Rather, embodiments of this disclosure include all variations, modifications, and equivalents falling within the spirit and scope of the appended claims.

[0016] Figure 1 This is a schematic diagram of the structure of a display device according to an embodiment of the present disclosure.

[0017] like Figure 1 As shown, the display device 10 includes:

[0018] The support component 101 and the display screen 102 connected to the support component 101 are provided. The display screen 102 integrates a light modulation element 103. The support component 101 includes an image generating device 104 and a freeform surface device 105. The image generating device 104 is used to generate an image and project the image onto the freeform surface device 105 based on a first incident direction. The freeform surface device 105 is used to modulate the direction of the image light to deflect the first incident direction into a first exit direction and project the image onto the light modulation element 103 based on the first exit direction. The light modulation element 103 is used to assist the display screen 102 in displaying the image.

[0019] The support component 101 is connected to the display screen 102 and is used to support the display screen 102 to assist the display screen 102 in displaying information.

[0020] For example, in an augmented reality (AR) glasses display, the support component 101 can be the temple part of the AR glasses. The support component 101 includes an image generating device 104 and a freeform surface device 105. The image generating device 104 serves as an image source to generate an image and projects the image onto the freeform surface device 105 in the form of image rays. The freeform surface device 105 can be used to modulate the direction of the image rays.

[0021] In this embodiment, when the image generating device 104 projects an image onto the freeform surface device 105, the image is projected based on a first incident direction. This first incident direction can be a certain angle formed between the image light rays and the freeform surface device 105. After the image light rays enter the freeform surface device 105, the device modulates the light rays. For example, certain parameters (e.g., amplitude, frequency, phase, etc.) of the light wave corresponding to the image light rays can be modulated according to a certain rule. After modulation, the first incident direction is deflected by a certain angle to become a first exit direction. Based on the first exit direction, the image is projected onto the light modulation element 103 and displayed on the auxiliary display screen 102. The first incident direction is... Figure 1 The image generating device 104 projects towards the freeform surface device 105 in the following direction, with the first emission direction being... Figure 1 The freeform surface device 105 is oriented toward the direction in which the light modulation element 103 is projected.

[0022] In this embodiment of the disclosure, the display screen 102 integrates an optical modulation element 103, that is, the display screen 102 and the optical modulation element 103 can be integrated into one unit, thereby effectively reducing the space occupied by the display screen 102.

[0023] The light modulation element 103 is used to control the intensity of light, which can assist the display screen 102 in displaying images.

[0024] In this embodiment, since the light modulation element 103 is integrated in the display screen 102 to modulate the image light, the direction of the image light can be deflected while enhancing the intensity of the image light, thus better assisting the display screen 102 in displaying images.

[0025] In this embodiment of the disclosure, the freeform surface device 105 can be a device capable of modulating the direction of image light. For example, the freeform surface device 105 can be a curved surface reflection device manufactured through a special process. Specifically, it can be a glass material or any other possible material, without limitation.

[0026] Optionally, in some embodiments, such as Figure 2 As shown, Figure 2 This is a schematic diagram of the structure of a display device according to another embodiment of the present disclosure.

[0027] In this embodiment of the present disclosure, the image light can be composed of multiple outgoing light rays, each of which corresponds to a multiple pixel 106, and the multiple pixel 106 are located in the image generating device 104.

[0028] The image is composed of multiple pixels. When the image generating device 104 projects the image, multiple outgoing light rays are emitted from the multiple pixels 106 respectively, and the multiple outgoing light rays are projected to form an image.

[0029] In this embodiment, the freeform surface device 105 can be used to modulate the direction of image light rays to deflect the first incident direction into the first outgoing direction, and can be used to pre-compensate multiple optical paths corresponding to multiple outgoing light rays respectively.

[0030] Optical path is a converted quantity, which can be the distance that light travels in a vacuum in the same amount of time. Under the conditions of the same propagation time or the same phase change, the path of light traveling in the medium is converted into the corresponding path of light traveling in a vacuum. The outgoing light may deviate during the reflection process, which is called optical path difference. Pre-compensation can be used to compensate for the optical path difference generated by the propagation of image light in the freeform surface device 105.

[0031] The freeform surface device 105 is used to modulate the direction of light, and can pre-compensate the optical path of the outgoing light corresponding to different pixels projected by the image generating device.

[0032] In this embodiment, the freeform surface device 105 is configured to pre-compensate the optical path, thereby reducing the optical path difference generated by the reflection of image light from the freeform surface device 105 to the light modulation element 103 and reducing the light intensity decay during the light transmission process.

[0033] Optionally, in some embodiments, such as Figure 3 As shown, Figure 3 This is a schematic diagram of the structure of a display device according to another embodiment of the present disclosure.

[0034] In this embodiment of the disclosure, the support component 101 includes a polarizing beam splitter 107, wherein the image generating device 104 is used to project an image onto the polarizing beam splitter 107 based on a second incident direction, and the first incident direction and the second incident direction are different.

[0035] in, Figure 3 The direction in which the image generating device 104 projects an image onto the polarizing beam splitter 107 can be referred to as the second incident direction.

[0036] The image generating device 104 projects each pixel in the image onto the polarizing beam splitter 107 in the form of corresponding image rays. The direction in which the image rays are projected onto the polarizing beam splitter 107 can be referred to as the second incident direction. Figure 1 and Figure 3 As shown, Figure 1 and Figure 3 The image generating device 104 can be set in different positions, so that the first incident direction and the second incident direction of the image light projected onto the freeform surface device 105 are different. This can effectively ensure the flexibility of the display device architecture design and help the display device to effectively adapt to the needs of personalized scenarios.

[0037] Among them, the polarizing beam splitter 107 is an optical element used to separate the horizontal and vertical polarization of image light.

[0038] In this embodiment of the present disclosure, the polarizing beam splitter 107 can be used to split the image light to obtain a first linearly polarized light and a second linearly polarized light, and to reflect the first linearly polarized light and transmit the second linearly polarized light. The first linearly polarized light corresponds to a second emission direction, the second linearly polarized light corresponds to a third emission direction, and the second emission direction and the third emission direction are perpendicular to each other.

[0039] The second launch direction is Figure 3 The polarizing beam splitter 107 is oriented towards the freeform surface device 105, and the third exit direction is... Figure 3 The image generating device 105 is oriented toward the direction of projection of the non-lens 110.

[0040] For example, a polarization beam splitter (PBS) can be used to split unpolarized image light incident on the polarization beam splitter 107 into two perpendicular linearly polarized beams, namely S-polarized light and P-polarized light. The S-polarized light can be regarded as the first linearly polarized light, and the polarization beam splitter 107 reflects the first linearly polarized light at an angle of 45°. The P-polarized light can be regarded as the second linearly polarized light, and can pass through the polarization beam splitter 107. The polarization beam splitter 107 transmits the second linearly polarized light.

[0041] In this embodiment, the polarizing beam splitter transmits the second linearly polarized light, and the transmission direction of the second linearly polarized light can be referred to as the third emission direction. The polarizing beam splitter also transmits the first linearly polarized light, and the reflection direction of the first linearly polarized light can be referred to as the second emission direction. In this embodiment, because the polarizing beam splitter 107 separates the horizontally and vertically polarized image light, the transmittance for the second linearly polarized light is guaranteed, the deflection angle of the image light is reduced, light leakage is avoided, and image quality is improved.

[0042] Optionally, in some embodiments, the support component 101 includes: an illumination element 108, wherein the illumination element 108 is used to project illumination light onto a polarizing beam splitter 107, the polarizing beam splitter 107 is used to split the illumination light to obtain a third linearly polarized light and a fourth linearly polarized light, and to reflect the third linearly polarized light and transmit the fourth linearly polarized light, wherein the third linearly polarized light corresponds to a third emission direction and the fourth linearly polarized light corresponds to a second emission direction.

[0043] The second launch direction is Figure 3 The polarizing beam splitter 107 is oriented towards the freeform surface device 105, and the third exit direction is... Figure 3 The polarizing beam splitter 107 is oriented toward the direction of projection of the non-lens 110.

[0044] In this embodiment, the polarizing beam splitter 107 reflects the third linearly polarized light, and the direction of reflection of the third linearly polarized light can be referred to as the third emission direction. The polarizing beam splitter 107 also transmits the fourth linearly polarized light, and the direction of transmission of the fourth linearly polarized light can be referred to as the second emission direction. In this embodiment, the use of the illumination element 108 supplements the image light, improving the display effect of the display device.

[0045] Optionally, in some embodiments, the polarizing beam splitter 107 is used to project the first linearly polarized light and the fourth linearly polarized light onto the freeform surface device 105 based on the second exit direction. That is, after the image light and the illumination light are split by the polarizing beam splitter 107, a portion of the linearly polarized light is projected onto the freeform surface device 105 as an outgoing light, thereby supplementing the image light with the illumination light to enhance the image display effect. After the image light is split by the polarizing beam splitter 107, the first linearly polarized light and the second linearly polarized light are obtained. After the illumination light is split by the polarizing beam splitter 107, the third linearly polarized light and the fourth linearly polarized light are obtained. The polarizing beam splitter 107 reflects the first linearly polarized light based on the second exit direction and transmits the fourth linearly polarized light based on the second exit direction. The two linearly polarized lights can be projected onto the freeform surface device 105 with the same second exit direction, thereby enhancing and modulating the image light using the light modulation element 103 to improve the imaging effect.

[0046] In this embodiment of the present disclosure, the freeform surface device 105 is used to deflect the second emission direction to the fourth emission direction, and based on the fourth emission direction, to project the first linearly polarized light and the fourth linearly polarized light onto the light modulation element 103, so as to realize the control of the light intensity by using the light modulation element 103.

[0047] The fourth launch direction is Figure 3 The freeform surface device 105 is oriented toward the direction in which the light modulation element 103 is projected.

[0048] The freeform surface device 105 can deflect the direction of light. After the first linearly polarized light and the fourth linearly polarized light are combined and projected onto the freeform surface device 105, the freeform surface device 105 deflects the second emission direction corresponding to the combined linearly polarized light at a certain angle to obtain the fourth emission direction, and projects the linearly polarized light onto the light modulation element 103 in the fourth emission direction. The light modulation element 103 can enhance and modulate the image light.

[0049] Optionally, in some embodiments, the support component 101 includes a waveplate 109, wherein a polarizing beam splitter 107 is used to project the second linearly polarized light and the third linearly polarized light onto the waveplate 109 based on a third exit direction. After the image light is split by the polarizing beam splitter 107, the first linearly polarized light and the second linearly polarized light are obtained. After being split by the polarizing beam splitter 107, the third linearly polarized light and the fourth linearly polarized light are obtained. The polarizing beam splitter 107 transmits the second linearly polarized light based on the third exit direction and reflects the third linearly polarized light based on the third exit direction. The two linearly polarized lights can be projected onto the waveplate 109 with the same third exit direction. Thus, the additional optical path difference between the second linearly polarized light and the third linearly polarized light can be determined using the waveplate 109, compensating for the additional optical path difference generated during the beam splitting process and reducing the light intensity attenuation during light transmission.

[0050] In this embodiment of the disclosure, waveplate 109 is used to determine the additional optical path difference between the second linearly polarized light and the third linearly polarized light, and the additional optical path difference is used for pre-compensation.

[0051] The additional optical path difference is generated when the polarizing beam splitter 107 splits the light. The polarizing beam splitter 107 is made of a pair of high-precision right-angle prisms bonded together, and one of the prisms has a polarizing beam splitting medium film coated on its hypotenuse.

[0052] In this embodiment, since a waveplate is used to determine the additional optical path difference between the second and third linearly polarized beams, the optical path difference generated during the beam splitting process can be appropriately compensated, thereby improving the imaging effect.

[0053] Optionally, in some embodiments, the support member 101 includes a non-lens 110 disposed parallel to the waveplate 109.

[0054] The non-lens 110 is used to converge the second and third linearly polarized light based on the additional optical path difference to obtain a converged ray, and then project the converged ray onto the polarizing beam splitter 107.

[0055] After the image light and illumination light are split by the polarizing beam splitter 107, linearly polarized light is obtained. The polarizing beam splitter 107 transmits the second linearly polarized light and reflects the third linearly polarized light. The exit directions of the second and third linearly polarized light are both the third exit direction. Then, the non-lens 110 can be used to converge the second and third linearly polarized light based on the additional optical path difference, and the converged light is projected onto the polarizing beam splitter 107.

[0056] The polarizing beam splitter 107 pre-compensates multiple optical paths corresponding to multiple outgoing rays based on the additional optical path difference carried by the converging ray.

[0057] In this embodiment, the non-lens 110 is used to converge the linearly polarized light and project it onto the polarizing beam splitter 107. The polarizing beam splitter 107 can then pre-compensate multiple optical paths corresponding to multiple outgoing rays based on the additional optical path difference carried by the converged light, thereby reducing directional deviation during light transmission and reducing light intensity decay during light transmission.

[0058] Alternatively, in some embodiments, the lighting element 108 is a light-emitting diode.

[0059] Among them, light-emitting diodes (LEDs) are commonly used light-emitting devices that can efficiently convert electrical energy into light energy, project illumination light evenly and stably, and have a high response speed, thus effectively assisting in imaging.

[0060] Alternatively, in some embodiments, the optical modulation element 103 is any of the following: a holographic optical element, a microlens array, a metasurface structure, and a microstructure grating.

[0061] Holographic optical elements are optical elements made based on the principles of holography. They are usually made on photosensitive thin film materials and work based on the principles of refraction and reflection in geometric optics. They can enhance and deflect the light in an image.

[0062] Among them, microlens arrays have the characteristics of small unit size and high integration, which can make the display device thinner and lighter, reduce the size of the head-mounted display device, and ensure the flexibility of the display device architecture design.

[0063] Metasurface structures can be used to control the polarization of light.

[0064] Among them, microstructure gratings have high optical performance and can reduce the size of head-mounted display devices.

[0065] Optionally, in some embodiments, the image is a hologram of a three-dimensional scene.

[0066] The display device 10 is capable of three-dimensional display, and the image projected by the image generating device 102 can be a hologram of a three-dimensional scene.

[0067] Alternatively, in some embodiments, the display device 10 is augmented reality (AR) glasses or a heads-up display (HUD).

[0068] For example, such as Figure 4 As shown, Figure 4 This is a schematic diagram of the AR glasses display device in an embodiment of this disclosure, wherein the temple portion can be regarded as a support component 101, and the lens portion can be regarded as a display screen 102.

[0069] For example, such as Figure 5As shown, Figure 5 This is a schematic diagram of the head-up display (HUD) in an embodiment of this disclosure.

[0070] In this embodiment of the disclosure, the placement of each component in the display device and the angular relationship between each component can be adaptively configured according to the actual usage scenario requirements of the display device, and this embodiment of the disclosure does not impose any restrictions on this.

[0071] The display device proposed in this embodiment is configured with a support component and a display screen connected to the support component. The display screen integrates a light modulation element. The support component includes an image generating device and a freeform surface device. The image generating device is used to generate an image and project the image onto the freeform surface device based on a first incident direction. The freeform surface device is used to modulate the direction of the image light to deflect the first incident direction into a first exit direction and project the image onto the light modulation element based on the first exit direction. The light modulation element is used to assist the display screen in displaying the image. This can effectively improve the display field of view of the display device without introducing too many additional components, thereby effectively improving the image display effect. Furthermore, it can directly display the image after modulating the direction of the image light, thereby greatly reducing optical energy loss and improving the visual imaging effect of the image light.

[0072] It should be noted that in the description of this disclosure, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance. Furthermore, in the description of this disclosure, unless otherwise stated, "a plurality of" means two or more.

[0073] Any process or method description in the flowchart or otherwise herein can be understood as representing a module, segment, or portion of code comprising one or more executable instructions for implementing a particular logical function or process, and the scope of preferred embodiments of this disclosure includes additional implementations in which functions may be performed not in the order shown or discussed, including substantially simultaneously or in reverse order depending on the function involved, as will be understood by those skilled in the art to which embodiments of this disclosure pertain.

[0074] It should be understood that various parts of this disclosure can be implemented using hardware, software, firmware, or a combination thereof. In the above embodiments, multiple steps or methods can be implemented using software or firmware stored in memory and executed by a suitable instruction execution system. For example, if implemented in hardware, as in another embodiment, it can be implemented using any one or a combination of the following techniques known in the art: discrete logic circuits having logic gates for implementing logical functions on data signals, application-specific integrated circuits (ASICs) having suitable combinational logic gates, programmable gate arrays (PGAs), field-programmable gate arrays (FPGAs), etc.

[0075] Those skilled in the art will understand that all or part of the steps of the methods described in the above embodiments can be implemented by a program instructing related hardware. The program can be stored in a computer-readable storage medium, and when executed, it includes one or a combination of the steps of the method embodiments.

[0076] Furthermore, the functional units in the various embodiments of this disclosure can be integrated into a processing module, or each unit can exist physically separately, or two or more units can be integrated into a module. The integrated module can be implemented in hardware or as a software functional module. If the integrated module is implemented as a software functional module and sold or used as an independent product, it can also be stored in a computer-readable storage medium.

[0077] The storage media mentioned above can be read-only memory, disk, or optical disk, etc.

[0078] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this disclosure. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0079] Although embodiments of the present disclosure have been shown and described above, it is to be understood that the above embodiments are exemplary and should not be construed as limiting the present disclosure. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present disclosure.

Claims

1. A display device, characterized by comprising: include: Support components; A display screen connected to the supporting component, the display screen integrating an optical modulation element; The supporting component includes: an image generating device and a freeform surface device; The image generating device is used to generate an image and project the image onto the freeform surface device based on a first incident direction. The freeform surface device is used to modulate the direction of image light rays to deflect the first incident direction into a first outgoing direction, and to project the image onto the light modulation element based on the first outgoing direction; The optical modulation element is used to assist the display screen in displaying the image; The supporting component includes: a polarizing beam splitter, wherein... The image generating device is used to project the image onto the polarizing beam splitter based on a second incident direction, wherein the first incident direction and the second incident direction are different. The polarizing beam splitter is used to split the image light to obtain a first linearly polarized light and a second linearly polarized light, and to reflect the first linearly polarized light and transmit the second linearly polarized light. The first linearly polarized light corresponds to a second emission direction, the second linearly polarized light corresponds to a third emission direction, and the second emission direction and the third emission direction are perpendicular to each other. The supporting component further includes a non-lens, the second emission direction is the direction in which the polarizing beam splitter projects toward the freeform surface device, and the third emission direction is the direction in which the image generating device projects toward the non-lens.

2. The display device of claim 1, wherein, The image light is composed of multiple outgoing light rays, each of which corresponds to a multiple pixel. These pixels are located within the image generating device. The freeform surface device is used to pre-compensate multiple optical paths corresponding to the multiple outgoing rays.

3. The display device of claim 1, wherein The support component includes: an illumination element, wherein, The lighting element is used to project lighting light onto the polarizing beam splitter; The polarizing beam splitter is used to split the illumination light to obtain a third linearly polarized light and a fourth linearly polarized light, and to reflect the third linearly polarized light and transmit the fourth linearly polarized light, wherein the third linearly polarized light corresponds to the third emission direction and the fourth linearly polarized light corresponds to the second emission direction. The polarizing beam splitter is also used to project the first linearly polarized light and the fourth linearly polarized light onto the freeform surface device based on the second emission direction, thereby enabling the illumination light to supplement the image light.

4. The display device of claim 3, wherein, in, The polarizing beam splitter is used to project the first linearly polarized light and the fourth linearly polarized light onto the freeform surface device based on the second emission direction. The freeform surface device is used to deflect the second emission direction to a fourth emission direction, and based on the fourth emission direction, to project the first linearly polarized light and the fourth linearly polarized light onto the optical modulation element, so as to project the image onto the optical modulation element.

5. The display device as claimed in claim 3, characterized in that, The supporting component includes: a waveplate, wherein, The polarizing beam splitter is used to project the second linearly polarized light and the third linearly polarized light onto the waveplate based on the third emission direction; The waveplate is used to determine the additional optical path difference between the second linearly polarized light and the third linearly polarized light, and the additional optical path difference is used for pre-compensation.

6. The display device as claimed in claim 5, characterized in that, The non-lens is arranged parallel to the waveplate, wherein... The non-lens is used to converge the second linearly polarized light and the third linearly polarized light based on the additional optical path difference to obtain a converged ray, and to project the converged ray onto the polarizing beam splitter. The polarizing beam splitter pre-compensates multiple optical paths corresponding to multiple outgoing rays based on the additional optical path difference carried by the converging light.

7. The display device as claimed in any one of claims 1-6, characterized in that, The optical modulation element is any one of the following: Holographic optical elements, microlens arrays, metasurface structures, and microstructured gratings.

8. The display device as claimed in any one of claims 1-6, characterized in that, The image is a hologram of a three-dimensional scene.

9. The display device as claimed in any one of claims 1-6, characterized in that, The display device is either augmented reality (AR) glasses or a heads-up display (HUD).

Images