Near-eye display device

Abstract

The application discloses a near-eye display device, and belongs to the technical field of display. The near-eye display device comprises a spliced display screen, and an optical assembly comprising a plurality of optical elements. The target optical element close to the splicing gap in the spliced display screen satisfies that: the target optical element comprises one optical element, the center point of the splicing gap, the center point of the target optical element and the center point of the eyebox region of the near-eye display device are located on the same straight line; or the target optical element comprises two adjacent optical elements, the center point of the splicing gap, the connecting point of the two adjacent optical elements and the center point of the eyebox region are located on the same straight line, and the element parameter of the target optical element is associated with the size of the splicing gap, so that the light of the virtual image generated by the splicing gap is incident outside the eyebox region. The application can improve the FOV and resolution of the near-eye display device while providing a continuous and complete image, and improve the immersion and visual experience of the user.

Description

Technical Field

[0001] This application belongs to the field of display technology, and in particular relates to a near-eye display device. Background Technology

[0002] To improve the field of view (FOV) and resolution of near-eye display devices, providing users with a wider field of view and higher image quality, near-eye display devices employ splicing technology to connect multiple displays. There are gaps between the spliced ​​displays, and no pixels are displayed in these gaps. As a result, the virtual image projected onto the virtual image surface from these gaps, magnified by optical elements, appears completely black. When light from this virtual image enters the user's eye, it causes the image seen by the user to be discontinuous (i.e., there are black shadows in the image). Figure 1 As shown, this affects the user's immersion and visual experience. Summary of the Invention

[0003] This application aims to address at least one of the technical problems existing in the prior art. To this end, this application proposes a near-eye display device that can provide continuous and complete images while improving the FOV and resolution of the near-eye display device, thereby enhancing the user's immersion and visual experience.

[0004] In a first aspect, this application provides a near-eye display device, comprising:

[0005] A video wall display includes multiple displays that are spliced ​​together, with a splicing gap between two adjacent displays;

[0006] An optical component, located on the light-emitting side of the splicing display screen, comprises multiple optical elements arranged in an array and connected together;

[0007] The target optical element near the splicing seam satisfies the following:

[0008] The target optical element includes an optical element, and the center point of the splicing seam, the center point of the target optical element, and the center point of the eye box area of ​​the near-eye display device are located on the same straight line; or,

[0009] The target optical element includes two adjacent optical elements, and the center point of the splicing seam, the connection point of the two adjacent optical elements, and the center point of the eye box area are located on the same straight line;

[0010] The element parameters of the target optical element are associated with the size of the splicing gap, so that the light from the virtual image generated by the splicing gap is incident outside the eye box area of ​​the near-eye display device.

[0011] According to the near-eye display device of this application, by setting up a splicing display screen and setting optical components on the light-emitting side of the splicing display screen, more image light enters the human eye, improving the FOV and resolution of the near-eye display device. Furthermore, when the target optical element near the splicing seam includes one optical element, the center point of the splicing seam, the center point of the target optical element, and the center point of the eye box area are located on the same straight line. When the target optical element includes two adjacent optical elements, the center point of the splicing seam, the connection point of the two adjacent optical elements, and the center point of the eye box area are located on the same straight line. Moreover, the element parameters of the target optical element are related to the size of the splicing seam, causing the light from the virtual image generated by the splicing seam to be incident outside the eye box area of ​​the near-eye display device, thereby preventing the virtual image generated by the splicing seam from entering the human eye, providing the user with a continuous and complete image, and improving the user's immersion and visual experience.

[0012] According to one embodiment of this application, the element parameters of the target optical element include dimensions;

[0013] The size of the target optical element is related to the size of the splicing gap.

[0014] According to one embodiment of this application, the element parameters of the target optical element are associated with the size of the splicing gap.

[0015] According to one embodiment of this application, the size of the target optical element is larger than the size of the splicing gap.

[0016] According to one embodiment of this application,

[0017] The size of the target optical element is positively correlated with the size of the splicing gap.

[0018] According to one embodiment of this application, the size of the eye box region is larger than the maximum size of the pupil.

[0019] According to one embodiment of this application, the element parameters include focal length;

[0020] The focal length of the target optical element is fixed, or the focal length of the target optical element is negatively correlated with the size of the splicing gap.

[0021] According to one embodiment of this application, the optical components in the optical assembly, other than the target optical element, may have the same or different element parameters as the target optical element.

[0022] According to one embodiment of this application, the splicing display screen includes any one of a flat display screen, a curved display screen, and a foldable display screen.

[0023] According to one embodiment of this application, the optical element includes a lens, which includes any one of a spherical lens, an aspherical lens, and a freeform lens.

[0024] According to one embodiment of this application, the splicing display screen includes a focal point area and a peripheral area located outside the focal point area;

[0025] The resolution of the display screen in the focal area is higher than that of the display screen in the peripheral area.

[0026] According to one embodiment of this application, the display screen in the focal area includes an OLED display screen, and the display screen in the peripheral area includes an LCD display screen.

[0027] According to one embodiment of this application, the peripheral area is located to the side and below the focal point area.

[0028] The above-described one or more technical solutions in the embodiments of this application have at least one of the following technical effects:

[0029] By setting up a video wall display and placing optical components on the light-emitting side of the display, more light from the image enters the human eye, improving the field of view (FOV) and resolution of the near-eye display device. Furthermore, when the target optical element near the video wall seam consists of a single optical element, the center point of the video wall seam, the center point of the target optical element, and the center point of the eye box area are all on the same straight line. When the target optical element consists of two adjacent optical elements, the center point of the video wall seam, the connection point of the two adjacent optical elements, and the center point of the eye box area are all on the same straight line. The element parameters of the target optical element are related to the size of the video wall seam. This ensures that the light from the virtual image generated by the video wall seam is directed outside the eye box area of ​​the near-eye display device, thus preventing the virtual image produced by the video wall seam from entering the human eye. This provides users with a continuous and complete image, enhancing their immersion and visual experience.

[0030] Additional aspects and advantages of this application 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 application. Attached Figure Description

[0031] The above and / or additional aspects and advantages of this application will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0032] Figure 1 This is one of the image illustrations in near-eye display devices in related technologies;

[0033] Figure 2 This is one of the structural schematic diagrams of the near-eye display device provided in the embodiments of this application;

[0034] Figure 3 This is a second schematic diagram of the near-eye display device provided in the embodiments of this application;

[0035] Figure 4 This is the second schematic diagram of an image in a near-eye display device in related technologies;

[0036] Figure 5 This is the third illustration of an image in a near-eye display device in related technologies;

[0037] Figure 6 This is the fourth illustration of an image in a near-eye display device in related technologies;

[0038] Figure 7 This is the fifth illustration of an image in a near-eye display device in related technologies;

[0039] Figure 8 This is the sixth illustration of an image in a near-eye display device in related technologies;

[0040] Figure 9 This is a schematic diagram of an image in a near-eye display device provided in an embodiment of this application;

[0041] Figure 10 This is a schematic diagram of the structure of the optical components in the near-eye display device provided in the embodiments of this application;

[0042] Figure 11 This is the third schematic diagram of the near-eye display device provided in the embodiments of this application;

[0043] Figure 12 This is the fourth structural schematic diagram of the near-eye display device provided in the embodiments of this application;

[0044] Figure 13 This is a schematic diagram of the structure of the splicing display screen in the near-eye display device provided in the embodiments of this application;

[0045] Figure 14 This is a top view of the splicing display screen in the near-eye display device provided in the embodiments of this application. Detailed Implementation

[0046] The embodiments of this application are described in detail below. Examples of these embodiments are shown 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 only used to explain this application, and should not be construed as limiting this application.

[0047] The near-eye display device provided in the embodiments of this application is described below with reference to the accompanying drawings.

[0048] Figure 2This is a schematic diagram of the structure of a near-eye display device provided in an embodiment of this application. The near-eye display device may include a virtual reality (VR) device or an augmented reality (AR) device, etc.

[0049] like Figure 2 As shown, the near-eye display device includes a video wall display 1 and an optical component 2, with the optical component 2 located on the light-emitting side of the video wall display 1. The video wall display 1 comprises multiple displays 11 that are spliced ​​together. The multiple displays 11 may have the same or different sizes. The size of the displays may include the length, width, and / or display area. The resolutions of the multiple displays 11 may be the same or different.

[0050] A seam 10 is provided between two adjacent displays 11. This seam 10 can refer to the gap between the two adjacent displays 11. When the displays 11 include display areas and non-display areas, the seam 10 can refer to the gap between the display areas of the two adjacent displays 11. No pixels are displayed at the seam 10.

[0051] The optical component 2 includes multiple optical elements 21 arranged in an array and connected to each other, used to magnify the images displayed on the video wall display 1. The multiple optical elements 21 can be the same size or different sizes. The overall size of the video wall display 1 can be larger than the overall size of the optical component 2, and the orthographic projection of the optical component 2 onto the video wall display 1 can be located within the video wall display 1. Alternatively, the overall size of the video wall display 1 can be smaller than or equal to the overall size of the optical component 2, and the orthographic projection of the video wall display 1 onto the optical component 2 can be located within the optical component 2, to ensure that all images displayed on the video wall display 1 are magnified by the optical component 2.

[0052] At least one optical element 21 near the seam 10 is designated as target optical element 21a. Target optical element 21a satisfies the following conditions: target optical element 21a comprises one optical element, and the center point of the seam 10, the center point of target optical element 21a, and the center point of the eye-box region of the near-eye display device are located on the same straight line; or, target optical element 21a comprises two adjacent optical elements, and the center point of the seam 10, the connection point of the two adjacent optical elements, and the center point of the eye-box region are located on the same straight line. Furthermore, the element parameters of target optical element 21a are related to the size of the seam 10 so that the light from the virtual image 30 generated by the seam 10 is incident outside the eye-box region of the near-eye display device.

[0053] The dimensions of the splicing gap 10 include its width along the first direction X, and the element parameters of the target optical element 21a include its dimensions (such as its width along the first direction X). The virtual image 30 generated by the splicing gap 10 refers to the virtual image 30 (black shadow) projected onto the virtual image surface 3 after being magnified by the target optical element 21a. In optical design, the eye-box refers to the area where the observer's eye can maintain a relatively free position while still seeing a clear and correct image or field of view when observing or using an optical system. The eye-box is related to factors such as the field of view of the optical system, the focal point of the line of sight, and the curvature of the field of view. In optical systems, especially in the design of observation or display devices, it is essential to ensure that a good visual experience is maintained even when the user's or observer's eye moves slightly, without losing clarity or causing other visual problems. For example, within the entire eye-box area, the screen's brightness and contrast should be maintained above a preset specific threshold to ensure image quality; another example is that image distortion is strictly limited to an acceptable range to ensure that the user does not experience a significant decrease in image quality when moving their gaze. The definition of the eye-box in this application is not limited to the specific forms exemplified above. It can be considered a virtual three-dimensional spatial region within which the observer can move without affecting visual quality.

[0054] The positional relationship between the target optical element 21a, the splicing gap 10, and the eye-box area needs to meet certain requirements.

[0055] When the target optical element 21a includes a single optical element, the center point of the splicing gap 10, the center point of the target optical element 21a, and the center point of the eye-box region are located on the same straight line. The center point of the eye-box region is generally the position of the human eye (i.e., the center position of the pupil), so that the center point of the splicing gap 10, the center point of the target optical element 21a, and the position of the pupil are located on the same straight line.

[0056] In the case where the target optical element 21a includes two adjacent optical elements, such as Figure 2 and Figure 3 As shown, the center point E of the splicing gap 10, the connection point A of two adjacent optical elements, and the center point B of the eye-box region are all on the same straight line. The center point B of the eye-box region is generally the position of the human eye 4 (i.e., the center position of the pupil), so that the center point E of the splicing gap 10, the connection point A of two adjacent optical elements, and the position of the pupil are all on the same straight line.

[0057] The center point B of the eye-box region can be located on the central axis C of the near-eye display device, or it can be located outside the central axis C of the near-eye display device.

[0058] like Figure 2 As shown, when the center point B of the eye-box region is located at the central axis C of the near-eye display device, the center point E of the splicing gap 10 and the connection point A of two adjacent optical elements in the target optical element 21a are both located on the central axis C, so that the center point E of the splicing gap 10, the connection point A of the two adjacent optical elements, and the center point B of the eye-box region are on the same straight line. The position of the human eye 4 is located at the center point B of the eye-box region, and the element parameters of the two adjacent optical elements are related to the size of the splicing gap 10, thereby ensuring that the virtual image 30 generated by the splicing gap 10 will not enter the human eye 4.

[0059] like Figure 3 As shown, when the center point B of the eye-box region is not located on the central axis C of the near-eye display device, the center point E of the splicing gap 10 and / or the connection point A of two adjacent optical elements in the target optical element 21a do not need to be located on the central axis C. It is only necessary to ensure that the center point E of the splicing gap 10, the connection point A of the two adjacent optical elements, and the center point B of the eye-box region are on the same straight line. The position of the human eye 4 is located at the center point B of the eye-box region, and the element parameters of the two adjacent optical elements are related to the size of the splicing gap 10, thereby ensuring that the virtual image 30 generated by the splicing gap 10 will not enter the human eye 4.

[0060] This embodiment improves the field of view (FOV) of the near-eye display device by setting up a splicing display screen 1 and setting up an optical component 2 on the light-emitting side of the splicing display screen 1, so that the user can see the complete virtual environment, thereby ensuring the breadth of the user's perception of the virtual environment, and also improves the resolution of the near-eye display device, so that the user can see a clear image, thereby ensuring visual quality and clarity. Although there is a splicing gap 10 between the spliced ​​displays 11 in the splicing display 1, and the virtual image 30 (black shadow) generated by the splicing gap 10 is projected onto the virtual image surface 3, by setting a target optical element 21a, when the target optical element 21a includes one optical element, the center point of the splicing gap 10, the center point of the target optical element 21a, and the center point of the eye-box area are all on the same straight line. When the target optical element 21a includes two adjacent optical elements, the center point of the splicing gap 10, the connection point of the two adjacent optical elements, and the center point of the eye-box area are all on the same straight line. Moreover, the element parameters of the target optical element 21a are related to the size of the splicing gap 10, so that the light of the virtual image 30 generated by the splicing gap 10 is incident outside the eye-box area. When the human eye moves within the eye-box area, the virtual image 30 cannot be seen by the human eye 4, that is, the user can see a continuous and complete image, thereby improving the user's immersion and visual experience.

[0061] In addition, related technologies employ hardware splicing, software splicing, fusion, transparent display, and light field display technologies to ensure image continuity. Hardware splicing uses frames and supports to position and align multiple displays, ensuring seamless splicing. Software splicing uses image processing software to process and merge images from multiple displays, such as matching and correcting pixel coordinates on different displays to achieve image continuity. Fusion combines hardware and software methods to optimize display across multiple displays, including hardware splicing and correction, as well as further correction by image processing software. Transparent display uses transparent displays to achieve image fusion, reducing visible gaps between displays. Light field display employs complex optical design and image generation to provide continuous images from different viewing angles and positions, reducing image differences on spliced ​​displays and improving visual consistency. However, these methods require more advanced computer hardware to process image splicing, resulting in higher hardware costs, limiting their widespread adoption, and increasing computational burden and system complexity.

[0062] In contrast to related technologies where light from the virtual image created by stitching gaps enters the human eye, causing discontinuities in the user's image, this embodiment ensures that the user sees a continuous and complete image by optimizing the optical design and imaging method of optical component 2. Compared to related technologies that use hardware stitching, software stitching, fusion, transparent display, or light field display technologies to ensure image continuity, this embodiment relies on the optical design and imaging method of optical component 2 to guarantee a continuous and complete image for the user. This eliminates the need for more advanced computer hardware to process image stitching, avoids increasing computational burden, simplifies system complexity, reduces hardware costs, and facilitates large-scale application of the device.

[0063] In some embodiments, the element parameters of the target optical element 21a include its dimensions. The dimensions of the target optical element 21a can be its width along a first direction X. The dimensions of the target optical element 21a are related to the dimensions of the splicing gap 10, meaning that the dimensions of the target optical element 21a can be designed based on the dimensions of the splicing gap 10.

[0064] In some embodiments, the size of the target optical element 21a is larger than the size of the stitching gap 10. When the positional relationship between the target optical element 21a, the stitching gap 10, and the eye-box area meets certain requirements, the size of the target optical element 21a being larger than the size of the stitching gap 10, and the size of the target optical element 21a being associated with the size of the stitching gap 10, can further ensure that the user sees a continuous and complete image, thereby further enhancing the user's immersion and visual experience.

[0065] The size of the target optical element 21a is positively correlated with the size of the splicing gap 10. That is, the larger the size of the splicing gap 10, the larger the size of the target optical element 21a, and the smaller the size of the splicing gap 10, the smaller the size of the target optical element 21a.

[0066] The dimensions of the splicing gaps 10 between different displays 11 vary. The size of the target optical element 21a near the splicing gap 10 is set according to the size of the splicing gap 10. For example, if the size of the splicing gap 10 is fixed, the size of the target optical element 21a is gradually increased. After being magnified by the target optical element 21a, the virtual image 30 projected onto the virtual image surface 3 after the splicing gap 10 is magnified by the target optical element 21a gradually moves outward from the virtual image surface 3 until the light from the virtual image 30 enters outside the eye-box area of ​​the near-eye display device, that is, the light from the virtual image 30 cannot enter the human eye 4. Therefore, the target optical element 21a is designed according to the size of the target optical element 21a when the light from the virtual image 30 cannot enter the human eye, thereby ensuring that the images on different displays 11 can be seamlessly connected and provided to the user.

[0067] For example, the seam 10 between two adjacent displays 11 is 4 mm. When the target optical element 21a is 3 mm in size, the image viewed by the user is as follows: Figure 4 As shown; when the size of the target optical element 21a is 4mm, the image viewed by the user is as follows. Figure 5 As shown; when the size of the target optical element 21a is 4.5mm, the image viewed by the user is as follows. Figure 6 As shown; when the size of the target optical element 21a is 5mm, the image viewed by the user is as follows. Figure 7 As shown; when the size of the target optical element 21a is 5.5mm, the image viewed by the user is as follows. Figure 8 As shown; when the size of the target optical element 21a is 6mm, the image viewed by the user is as follows. Figure 9 As shown. It can be seen that, Figure 9 The displayed image is a continuous and complete image, that is... Figure 9 The displayed image does not have a virtual image 30 (black shadow). Therefore, with a splicing gap 10 of 4mm between two adjacent displays 11, the size of the target optical element 21a can be set to 6mm to ensure that the user sees a continuous and complete image.

[0068] In some embodiments, the size of the eye-box region is larger than the maximum size of the pupil. The size of the eye-box region can be the width of the eye-box region along a first direction X.

[0069] Under certain requirements, when the positional relationship between the target optical element 21a, the splicing gap 10, and the eye-box area meets certain requirements, the size of the eye-box area is larger than the maximum size of the pupil, and the size of the target optical element 21a is larger than the size of the splicing gap 10. The size of the target optical element 21a is related to the size of the splicing gap 10 (e.g., positively correlated), so that it can continuously focus during user use, ensuring that the user can always see a continuous and complete image, thereby further improving the user's immersion and visual experience.

[0070] In some embodiments, the element parameters of the target optical element 21a may include the focal length. The focal length of the target optical element 21a may be fixed, or the focal length of the target optical element 21a may be negatively correlated with the size of the splicing gap 10, that is, the larger the size of the splicing gap 10, the smaller the focal length of the target optical element 21a.

[0071] When the positional relationship between the target optical element 21a, the splicing gap 10, and the eye-box area meets certain requirements, the size of the target optical element 21a is larger than the size of the splicing gap 10, and the size of the target optical element 21a is positively correlated with the size of the splicing gap 10, while the focal length of the target optical element 21a is negatively correlated with the focal length of the splicing gap 10. This can further ensure that the user sees a continuous and complete image, thereby further improving the user's immersion and visual experience.

[0072] In some embodiments, the target optical element 21a may also include other optical elements, such as other optical elements adjacent to one of the aforementioned optical elements, or other optical elements adjacent to two of the aforementioned adjacent optical elements, without specific limitations here.

[0073] In some embodiments, the element parameters of other optical elements 21 in the optical assembly 2 besides the target optical element 21a may be different from those of the target optical element 21a. In other words, the optical assembly 2 includes at least two types of optical elements 21 (the target optical assembly 21a and other optical components 21), and the element parameters of the at least two types of optical elements 21 may be different.

[0074] When the component parameters include size and focal length, the target optical component 21a and other optical components 21 have the same size but different focal lengths; or, different sizes but the same focal length; or, both different sizes and focal lengths.

[0075] like Figure 10 and Figure 11 As shown, the four optical elements located at the center of optical component 2 (near the splicing gap 10) are the target optical elements 21a. The size of the target optical elements 21a is related to the size of the splicing gap 10; that is, the size of the target optical elements 21a and the size of the splicing gap 10 are positively correlated, and the focal length of the target optical elements 21a remains constant, or the focal length of the target optical elements 21a is negatively correlated with the size of the splicing gap 10. The size and focal length of the other optical elements 21 located around the target optical elements 21a are not related to the size of the splicing gap 10. The size of the other optical elements 21 is different from the size of the target optical elements 21a; for example, the size of the other optical elements 21 can be smaller than the size of the target optical elements 21a. The focal length of the other optical elements 21 can be the same as or different from the focal length of the target optical elements 21a.

[0076] The center point E of the splicing gap 10, the connection point A between two adjacent optical elements in the target optical element 21a, and the center point B of the eye-box region are all located on the central axis C. Figure 11As shown, the dimensions of two adjacent optical elements in the target optical element 21a are both larger than the dimensions of the splicing gap 10. The dimensions of two adjacent optical elements in the target optical element 21a are related to the dimensions of the splicing gap 10, so that the light of the virtual image 30 generated by the splicing gap 10 is incident outside the eye-box area, thereby preventing the virtual image 30 from entering the human eye 4.

[0077] In some embodiments, the optical elements 21 in the optical assembly 2, other than the target optical element 21a, may have the same element parameters as the target optical element 21a. In other words, the optical assembly 2 may include only one type of optical element 21, and all optical elements 21 in the optical assembly 2 may have the same element parameters.

[0078] When the component parameters include size and focal length, each optical component 21 in optical component 2 has the same size and focal length.

[0079] like Figure 3 As shown, the size of each optical element 21 in the optical assembly 2 is related to the size of the splicing gap 10. For example, the size of each optical element 21 is positively correlated with the size of the splicing gap 10, and the focal length of each optical element 21 is fixed, or the focal length of each optical element 21 is negatively correlated with the size of the splicing gap 10.

[0080] In some embodiments, the overall size W of the image on the virtual image plane 3 in the field of view (FOV) is Ws(de+f+do) / de. Wherein, Ws is the overall size of the splicing display screen 1, de is the exit pupil distance (eye-relief), f is the focal length of the optical element 21, and do is the imaging distance.

[0081] In some embodiments, the relationship between the eyebox area (i.e., the size of the eyebox region) eye-box we, the size gap 10, the size wl of the target optical element 21a, and the focal length f is: eye-box we = (wl - gap)de / f. Moreover, the size wl of the target optical element 21a is greater than the size gap 10, i.e., wl > gap.

[0082] The eye-box we needs to be larger than the maximum pupil size (e.g., 8mm). When the size of the seam gap 10 is gap = 2.7mm, the size of the optical element 21 is wl = 12.7mm, the exit pupil distance is de = 20mm, and the focal length is f = 5mm, the FOV is 130°, and the eye-box we = 40mm completely covers the range of human eye movement.

[0083] In some embodiments, the splicing display screen 1 includes any one of a flat display screen, a curved display screen, and a foldable display screen. When the splicing display screen 1 is a flat display screen, such as... Figure 2 , Figure 3 and Figure 11 As shown, the optical component 2 is planar, meaning that the multiple optical elements 21 in the optical component 2 are distributed in a planar manner; when the splicing display screen 1 is a curved display screen, the optical component 2 is curved, meaning that the multiple optical elements 21 in the optical component 2 are distributed in a curved manner; when the splicing display screen 1 is a folding display screen, as shown... Figure 12 As shown, the optical component 2 is foldable.

[0084] To further improve the field of view of near-eye display devices, the splicing display screen 1 can be a curved display screen or a foldable display screen. In a curved or foldable display screen, such as... Figure 12 As shown, the position of the human eye 4 is not on the central axis C, but the center point E of the splicing gap 10, the connection point A of two adjacent optical elements in the target optical element 21a, and the center point B of the eye-box region (i.e., the position of the human eye 4) are on the same straight line. Moreover, the size of two adjacent optical elements in the target optical element 21a is larger than the size of the splicing gap 10. The size of two adjacent optical elements in the target optical element 21a is related to the size of the splicing gap 10, so that the light of the virtual image 30 generated by the splicing gap 10 is incident outside the eye-box region, thereby preventing the virtual image 30 from entering the human eye 4.

[0085] In some embodiments, the optical component 2 includes a lens array, and the optical element 21 includes a lens, which includes any one of a spherical lens, an aspherical lens, and a freeform lens.

[0086] This embodiment allows for the selection of different types of lens arrays based on specific application requirements. Different types of lens arrays can meet the needs of different application scenarios, thereby improving the flexibility of near-eye display device applications.

[0087] In some embodiments, such as Figure 13 As shown, the splicing display screen 1 includes a focal point area 12 and an outer peripheral area 13 located outside the focal point area 12. The resolution of the display screen 11 in the focal point area 12 is higher than the resolution of the display screen 11 in the outer peripheral area 13.

[0088] Human visual perception varies across different areas of the field of view; that is, the human eye has different recognition requirements for different areas. Based on these different recognition requirements, different types of displays can be placed in different areas to provide a higher quality visual experience while minimizing costs. In the splicing display screen 1, the area corresponding to the center of the human eye is the focal point area 12. A high-resolution display screen 11 can be placed in the focal point area 12 to ensure excellent image quality for the user, contributing to enhanced immersion and realism. A lower-resolution display screen 11 can be placed in the peripheral area 13 to expand the field of view (FOV) to provide the user with a greater sense of virtual environment.

[0089] The type and number of displays 11 in the focal area 12 are not specifically limited, nor are the type and number of displays 11 in the peripheral area 13. They can be set and adjusted according to actual application scenarios and user needs to provide users with a flexible and application-specific virtual reality experience. The architecture of this embodiment allows for future scalability, enabling the displays to be upgraded or more displays to be added as technology advances and market demands change, ensuring the device remains competitive in the future.

[0090] In some embodiments, the display 11 in the focal area 12 includes an OLED display, and the display 11 in the peripheral area 13 includes an LCD display. The OLED display may have a 4K resolution, and the LCD display may have a 2K resolution.

[0091] The peripheral area 13 is located on at least one side of the focal point area 12, such that the peripheral area 13 may be disposed around the focal point area 12. In some embodiments, the peripheral area 13 is located to the side and below the focal point area 12. Figure 14 As shown, in the splicing display screen 1a corresponding to the left eye 4a, the peripheral area 13 is located to the left and below the focal point area 12; in the splicing display screen 1b corresponding to the right eye 4b, the peripheral area 13 is located to the right and below the focal point area 12.

[0092] This embodiment can achieve splicing of displays with various sizes, pixel densities, and display numbers to meet the needs of various application scenarios. For example... Figure 13 As shown, the splicing display 1 includes two relatively small but high-resolution OLED displays 11a and two relatively large but low-resolution LCD displays 11b. The two OLED displays 11a are located at the center of the human eye, specifically in the focal zone 12, to ensure the user receives a high-quality image in the key area of ​​their field of vision. Meanwhile, to widen the overall field of view (FOV) and minimize costs, the two LCD displays 11b are located to the side and below the focal zone 12, respectively. Figure 14 As shown, the FOV for both the left eye 4a and the right eye 4b is 130°.

[0093] The two OLED displays 11a have a resolution of 4K, the two LCD displays 11b have a resolution of 2K, and the resolution of a single eye reaches 10K to meet the requirements of high resolution and large FOV.

[0094] The flexibility of this embodiment allows it to adapt to different usage scenarios and user needs. Depending on the specific application, the size and configuration of each display screen 11 in the splicing display screen 1 can be adjusted to meet the requirements of a particular scenario. This flexibility provides users with a customized virtual reality experience. This embodiment can be applied to various visual experience scenarios requiring a large FOV and high resolution, such as simulation training, medical image processing, and scientific visualization.

[0095] Following optical imaging, this embodiment can process the image to further optimize its quality and continuity. In terms of software rendering, this embodiment employs techniques such as image compositing, correction and calibration, multi-channel rendering, and performance optimization. Image compositing refers to the software-level compositing required to present a unified image across multiple displays 11. This includes merging the content of multiple image sources into a single continuous image to fit the overall size of the spliced ​​display 1. Correction and calibration correct for differences in color, brightness, distortion, etc., between displays 11 to ensure visual consistency. Multi-channel rendering requires the software to manage multiple rendering channels, effectively distribute the graphics rendering workload, and ensure synchronized operation of each channel in order to render multiple displays 11 simultaneously. Software rendering requires performance optimization to ensure smooth image rendering at high resolutions and high refresh rates, which may involve graphics rendering techniques, multi-threaded rendering, and GPU acceleration.

[0096] According to the near-eye display device provided in the embodiments of this application, by setting up a splicing display screen and an optical component located on the light-emitting side of the splicing display screen, more light from the image enters the human eye, improving FOV and resolution, and enhancing the user's visual experience; when the target optical element near the splicing gap includes one optical element, the center point of the splicing gap, the center point of the target optical element, and the center point of the eye box area are located on the same straight line; when the target optical element includes two adjacent optical elements, the center point of the splicing gap, the connection point of the two adjacent optical elements, and the center point of the eye box area are located on the same straight line, and the element parameters of the target optical element are related to the size of the splicing gap, so that the splicing gap produces The light from the virtual image is incident outside the eye box area of ​​the near-eye display device, providing users with a continuous and complete image; it eliminates the need for more powerful computing power to handle the problems caused by splicing gaps, does not increase computing requirements, reduces hardware costs, and simplifies system complexity; the elimination of black shadows between images reduces visual fatigue and discomfort for users when using near-eye display devices for extended periods, further improving the comfort of the virtual reality experience; a high-resolution display is set in the focal area of ​​the line of sight, and a low-resolution display is set in the peripheral area to achieve higher visual quality with a relatively low-cost hardware configuration; it supports multiple types of splicing displays and multiple types of lens arrays, providing greater flexibility and suitability for different application scenarios.

[0097] The terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and are not used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first," "second," etc., are generally of the same class and are not limited in number; for example, a first object can be one or more.

[0098] In the description of this application, "multiple" means two or more.

[0099] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "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 application. 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.

[0100] Although embodiments of this application have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the claims and their equivalents.

Claims

1. A near-eye display device, characterized in that, include: A video wall display includes multiple displays that are spliced ​​together, with a splicing gap between two adjacent displays; An optical component, located on the light-emitting side of the splicing display screen, includes multiple optical elements arranged in an array and connected together, wherein the optical elements are lenses; The target optical element located near the splicing seam satisfies the following: The target optical element includes two adjacent optical elements, and the center point of the splicing seam, the connection point of the two adjacent optical elements, and the center point of the eye box area are located on the same straight line; The element parameters of the target optical element are related to the size of the splicing gap, so that the light from the virtual image generated by the splicing gap is incident outside the eye box area after being acted upon by the target optical element. The element parameters of the target optical element include the size.

2. The near-eye display device according to claim 1, characterized in that, The size of the target optical element is larger than the size of the splicing gap.

3. The near-eye display device according to claim 2, characterized in that, The size of the target optical element is positively correlated with the size of the splicing gap.

4. The near-eye display device according to claim 1, characterized in that, The size of the eye box area is larger than the maximum size of the pupil.

5. The near-eye display device according to claim 1, characterized in that, The element parameters of the target optical element include focal length; The focal length of the target optical element is fixed, or the focal length of the target optical element is negatively correlated with the size of the splicing gap.

6. The near-eye display device according to claim 1, characterized in that, The optical components in the optical assembly, other than the target optical element, may have the same or different component parameters as the target optical element.

7. The near-eye display device according to any one of claims 1-6, characterized in that, The splicing display screen includes any one of flat display screen, curved display screen, and foldable display screen.

8. The near-eye display device according to any one of claims 1-6, characterized in that, The lens includes any one of a spherical lens, an aspherical lens, and a freeform lens.

9. The near-eye display device according to any one of claims 1-6, characterized in that, The splicing display screen includes a focal point area and an outer perimeter area located outside the focal point area; The resolution of the display screen in the focal area is higher than that of the display screen in the peripheral area.

10. The near-eye display device according to claim 9, characterized in that, The display screen in the focal area includes an OLED display screen, and the display screen in the peripheral area includes an LCD display screen.

11. The near-eye display device according to claim 9, characterized in that, The peripheral area is located to the side and below the focal point of the line of sight.

Images