Virtual reality terminal equipment

Abstract

The invention relates to the technical field of virtual reality, and discloses virtual reality terminal equipment, which comprises a first display screen and a first optical module corresponding to the left eye of a user, and a second display screen and a second optical module corresponding to the right eye of the user. In the device, the light-emitting center of a first display screen has a first offset relative to the optical axis center of a first optical module, and the light-emitting center of a second display screen has a second offset relative to the optical axis center of a second optical module. The sizes of the display screens on the upper side and the lower side of the horizontal optical axis of the optical module determine the vertical distance of the visual range of the image obtained by binocular fusion, and the sizes of the display screens on the left side and the right side of the vertical optical axis determine the left-right distance of the visual range. Therefore, compared with the virtual reality terminal equipment in which the light-emitting center of the display screen and the optical axis center of the optical module coincide, the virtual reality terminal equipment provided by the invention has the advantages that the visual range of the image is larger, and the visual field angle is also larger.

Description

Technical Field

[0001] The present application relates to the field of virtual reality technology, and in particular to a virtual reality terminal device. Background Art

[0002] Virtual reality terminal devices use virtual reality (VR) technology to block users' vision and hearing from the outside world, giving users a feeling of being in a virtual environment. Taking VR glasses as an example, Figure 1A A structural schematic diagram of a VR glasses 100 is shown. Figure 1A As shown, the left eyeglass frame assembly 200 in the VR glasses 100 includes an optical module and a display screen corresponding to the left eye, and the right eyeglass frame assembly 300 includes an optical module and a display screen corresponding to the right eye. The display screen is usually an organic light-emitting diode screen, which can be used to display images. In addition, the light emitted by the display screen during the image display process can be projected into the optical module; the optical module optically processes the image based on the received light and projects the processed image into the user's eyes.

[0003] Figure 1B A schematic diagram showing the positional relationship between an optical module and a display screen included in a pair of VR glasses is shown. Figure 1B The optical module (also referred to as an optical machine) 101 and an optical module 102, as well as a display screen 103 and a display screen 104, wherein the optical module 101 and the display screen 103 correspond to the user's left eye, and the optical module 102 and the display screen 104 correspond to the user's right eye. Based on this structure, the user's two eyes can see the images projected by the optical module 101 and the optical module 102 respectively. The user's binoculars fuse the two images to obtain a fused image, which is the image that the user can finally see, and the range of the fused image can be called the user's visible range. At present, how to improve the user's visible range is a technical problem that needs to be solved. Summary of the invention

[0004] The embodiment of the present application provides a virtual reality terminal device. In the device, there is a certain offset between the light emitting center of the display screen and the optical axis center of the corresponding optical module, so the virtual reality terminal device provided by the present application has a larger visible range of the image and a larger visible field angle than the virtual reality terminal device in which the light emitting center of the display screen and the optical axis center of the optical module coincide with each other.

[0005] In a first aspect, the present application provides a virtual reality terminal device, which includes a first display screen, a first optical module, a second display screen, and a second optical module, wherein the first optical module is used to receive a first light emitted by the first display screen during image display, and project the first light after optical processing to the left eye, and the second optical module is used to receive a second light emitted by the second display screen during image display, and project the second light after optical processing to the right eye; and, the light emitting center of the first display screen has a first offset relative to the optical axis center of the first optical module, and the light emitting center of the second display screen has a second offset relative to the optical axis center of the second optical module.

[0006] The structural diagram of the virtual reality terminal device can be found in the following text. Figure 1A and Figure 1B It can be understood that the first display screen is the display screen 103 mentioned later, the second display screen is the display screen 104 mentioned later, the first optical module is the optical module 101 mentioned later, and the second optical module is the optical module 102 mentioned later.

[0007] like Figure 1B As shown, under normal circumstances, the light emitting center of the display screen of the virtual reality terminal device coincides with the optical axis center of the optical module, but in the virtual reality terminal device provided by the present application, there is a certain offset between the light emitting center of the display screen and the optical axis center of the corresponding optical module, that is, the light emitting center of the first display screen has a first offset relative to the optical axis center of the first optical module, and the light emitting center of the second display screen has a second offset relative to the optical axis center of the second optical module.

[0008] Since the size of the display screens on the upper and lower sides of the horizontal optical axis of the optical module determines the upper and lower spacing of the visible range of the image obtained by binocular fusion, and the size of the display screens on the left and right sides of the vertical optical axis determines the left and right spacing of the visible range, the first offset and the second offset can increase the left and right spacing or the upper and lower spacing of the visible range, or can increase both the left and right spacing and the upper and lower spacing, thereby making the visible range of the image of the virtual reality terminal device provided by the present application larger and the visible field angle larger.

[0009] In a possible implementation of the first aspect, the first offset and the second offset both include at least one of a horizontal offset and a vertical offset.

[0010] It can be understood that if the first offset includes a horizontal offset, it means that the luminous center of the first display screen has a distance of the offset amount in the horizontal direction relative to the optical axis center of the first optical module; if the first offset includes a vertical offset, it means that the luminous center of the first display screen has a distance of the offset amount in the vertical direction relative to the optical axis center of the first optical module; if the first offset includes both a horizontal offset and a vertical offset, it means that the luminous center of the first display screen has a distance of the offset amount in the horizontal direction relative to the optical axis center of the first optical module, and also has a distance of the offset amount in the vertical direction.

[0011] It can be understood that the horizontal direction can be a direction parallel to the line between the two eyes of the wearer; the vertical direction can be a direction perpendicular to the line between the two eyes of the wearer.

[0012] In a possible implementation of the first aspect, the first offset and the second offset both include a horizontal offset; and the light emitting center of the first display screen has a first horizontal offset in a first direction relative to the optical axis center of the first optical module, wherein the first direction is the left direction of the vertical optical axis of the first optical module; the light emitting center of the second display screen has a second horizontal offset in a second direction relative to the optical axis center of the second optical module, wherein the second direction is the right direction of the vertical optical axis of the second optical module.

[0013] It can be understood that the left direction of the optical axis center of the first optical module can be the left direction from the wearer's perspective; the right direction can be the right direction from the wearer's perspective.

[0014] It can be understood that both the first offset and the second offset include a horizontal offset, and the light emitting center of the first display screen is located on the left side of the optical axis center of the first optical module, and the horizontal distance is the first horizontal offset; the light emitting center of the second display screen is located on the right side of the optical axis center of the second optical module, and the horizontal distance is the second horizontal offset. Wherein, when the first horizontal offset and the second horizontal offset are the same, the first horizontal offset and the second horizontal offset are the distance d mentioned later.

[0015] In this case, the image size on the left side of the vertical optical axis of the first optical module in the first display screen becomes larger, and similarly, the image size on the right side of the vertical optical axis of the second optical module in the second display screen also becomes larger. The visible range of the image obtained by binocular fusion in the horizontal direction becomes larger, and the visible field angle in the horizontal direction increases.

[0016] In a possible implementation of the first aspect, the first offset and the second offset both include a vertical offset; and the light emitting center of the first display screen has a first vertical offset in a third direction relative to the optical axis center of the first optical module, wherein the third direction is the upper direction of the horizontal optical axis of the first optical module; the light emitting center of the second display screen has a second vertical offset in a fourth direction relative to the optical axis center of the second optical module, wherein the fourth direction is the lower direction of the horizontal optical axis of the second optical module.

[0017] It can be understood that both the first offset and the second offset include a vertical offset expression, the light emitting center of the first display screen is located in the upper direction of the optical axis center of the first optical module, and the vertical distance is the first vertical offset; the light emitting center of the second display screen is located in the lower direction of the optical axis center of the second optical module, and the vertical distance is the second vertical offset. Wherein, when the first vertical offset and the second vertical offset are the same, the first vertical offset and the second vertical offset are the distance n mentioned later.

[0018] In this case, the image size on the first display screen located above the horizontal optical axis of the first optical module becomes larger, and similarly, the image size on the second display screen located below the horizontal optical axis of the second optical module also becomes larger. The visible range of the image obtained by binocular fusion in the vertical direction becomes larger, and the visible field angle in the vertical direction increases.

[0019] In a possible implementation of the first aspect, the first offset and the second offset both include a horizontal offset and a vertical offset; and, the luminous center of the first display screen has a first horizontal offset in a first direction relative to the optical axis center of the first optical module, and a first vertical offset in a third direction, wherein the first direction is the left direction of the vertical optical axis of the first optical module, and the third direction is the upper direction of the horizontal optical axis of the first optical module; the luminous center of the second display screen has a second horizontal offset in the second direction relative to the optical axis center of the second optical module, and a second vertical offset in a fourth direction, wherein the second direction is the right direction of the vertical optical axis of the second optical module, and the fourth direction is the lower direction of the horizontal optical axis of the second optical module.

[0020] It can be understood that the first offset and the second offset both include both horizontal offset and vertical offset, indicating that the light emitting center of the first display screen is located on the left side of the optical axis center of the first optical module and also on the upper side of the optical axis center of the first optical module, and the horizontal distance is the first horizontal offset, and the vertical distance is the first vertical offset; the light emitting center of the second display screen is located on the right side of the optical axis center of the second optical module and also on the lower side of the optical axis center of the second optical module, and the horizontal distance is the second horizontal offset, and the vertical distance is the second vertical offset.

[0021] In this case, the image size on the left side of the vertical optical axis of the first optical module in the first display screen becomes larger, and similarly, the image size on the right side of the vertical optical axis of the second optical module in the second display screen also becomes larger. The image size on the upper side of the horizontal optical axis of the first optical module in the first display screen becomes larger, and similarly, the image size on the lower side of the horizontal optical axis of the second optical module in the second display screen also becomes larger. Therefore, the visible range of the image obtained by binocular fusion in the horizontal and vertical directions becomes larger, and the visible field angle in the horizontal and vertical directions also increases.

[0022] In a possible implementation of the first aspect, the first central axis of the first display screen and the horizontal optical axis of the first optical module have a first angle in the counterclockwise direction, and the second central axis of the first display screen and the vertical optical axis of the first optical module have a first angle in the counterclockwise direction; and the third central axis of the second display screen and the horizontal optical axis of the second optical module have a second angle in the clockwise direction, and the fourth central axis of the second display screen and the vertical optical axis of the second optical module have a second angle in the clockwise direction.

[0023] It can be understood that the counterclockwise direction may be the counterclockwise direction from the wearer's perspective; the clockwise direction may be the clockwise direction from the wearer's perspective. The first central axis and the second central axis of the first display screen are two axes passing through the light emitting center of the first display screen and perpendicular to each other. The third central axis and the fourth central axis of the second display screen are two axes passing through the light emitting center of the second display screen and perpendicular to each other.

[0024] It can be understood that this situation is that the first display screen has a counterclockwise angle compared to the first optical module, and the second display screen has a clockwise angle compared to the second optical module. The image size on the left side of the vertical optical axis of the first optical module in the first display screen becomes larger. Similarly, the image size on the right side of the vertical optical axis of the second optical module in the second display screen also becomes larger. Therefore, the visible range of the image obtained by binocular fusion in the horizontal direction becomes larger, and the visible field angle in the horizontal direction also increases. Among them, when the first angle and the second angle are the same, the first angle and the second angle are the angle α mentioned later.

[0025] In a possible implementation of the first aspect, a size of the first display screen is smaller than or equal to a size of the first optical module, and a size of the second display screen is smaller than or equal to a size of the second optical module.

[0026] It can be understood that the size of the first display screen is less than or equal to the size of the first optical module, and the area of ​​the first display screen is less than or equal to the area of ​​the first optical module; similarly, the size of the second display screen is less than or equal to the size of the second optical module, and the area of ​​the second display screen is less than or equal to the area of ​​the second optical module.

[0027] In a possible implementation of the first aspect, a range boundary of the first display screen does not exceed a range boundary of the first optical module, and a range boundary of the second display screen does not exceed a range boundary of the second optical module.

[0028] It can be understood that the leftmost end of the first display screen of the virtual reality terminal device provided in the embodiment of the present application does not exceed the leftmost end of the first optical module, and the rightmost end of the second display screen does not exceed the rightmost end of the second optical module, so as to avoid the range boundary of the display screen exceeding the range boundary of the optical module and causing the loss of the content of the image after binocular fusion. Among them, the leftmost end of the first optical module can be the left boundary of the first optical module from the wearer's perspective; the rightmost end of the second optical module can be the right boundary of the second optical module from the wearer's perspective.

[0029] In a possible implementation of the first aspect, a ratio of the first offset to the size of the first display screen is less than 50%, and a ratio of the second offset to the size of the second display screen is less than 50%.

[0030] It can be understood that, taking the first display screen as a square as an example, the ratio of the first offset to the side length of the first display screen is less than 50%, and the ratio of the second offset to the side length of the second display screen is less than 50%, to ensure that the range boundary of the display screen does not exceed the range boundary of the optical module.

[0031] In a possible implementation of the first aspect, the shape and size of the first display screen are the same as those of the second display screen, and the shape and size of the first optical module are the same as those of the second optical module. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1A According to some embodiments of the present application, a structural schematic diagram of a VR glasses 100 is shown;

[0033] Figure 1B According to some embodiments of the present application, a schematic diagram of the positional relationship between an optical module and a display screen included in a VR glasses 100 is shown;

[0034] Figure 2 According to some embodiments of the present application, another schematic diagram of the positional relationship between an optical module and a display screen is shown;

[0035] Figure 3According to some embodiments of the present application, a schematic diagram of the field of view angles corresponding to a binocular stereoscopic vision area and a visual range is shown;

[0036] Figure 4A According to some embodiments of the present application, a schematic diagram of the positional relationship between the display screen and the optical module after the display screen is horizontally moved in the first manner is shown;

[0037] Figure 4B According to some embodiments of the present application, a schematic diagram of the structure of a display screen and an optical module after a first horizontal movement of the display screen is shown;

[0038] Figure 5A According to some embodiments of the present application, a schematic diagram of the positional relationship between a display screen and an optical module after the display screen is vertically moved is shown;

[0039] Figure 5B According to some embodiments of the present application, a schematic diagram of the structure of a display screen and an optical module after a vertically movable display screen is shown;

[0040] Fig. 6A According to some embodiments of the present application, a schematic diagram of the positional relationship between a display screen and an optical module after the display screen is moved horizontally and vertically is shown;

[0041] Figure 6B According to some embodiments of the present application, a schematic diagram of the structure of a display screen and an optical module after the display screen is moved horizontally and vertically is shown;

[0042] Fig. 7A According to some embodiments of the present application, a schematic diagram of the positional relationship between a display screen and an optical module after horizontal and rotational displacement is shown;

[0043] Figure 7B According to some embodiments of the present application, a schematic diagram of the structure of a display screen and an optical module after horizontal and rotational displacement is shown;

[0044] Fig. 8A According to some embodiments of the present application, a schematic diagram is shown in which a display screen is square and an optical module is irregular in shape;

[0045] Figure 8B According to some embodiments of the present application, a schematic diagram of the positional relationship between the display screen and the optical module after the second horizontal movement of the display screen is shown;

[0046] Figure 8C According to some embodiments of the present application, a schematic diagram of the structure of a display screen and an optical module after a second horizontal movement of the display screen is shown;

[0047] Fig.9AAccording to some embodiments of the present application, a schematic diagram is shown in which a display screen is a heptagon and an optical module is an irregular shape;

[0048] Fig. 9B According to some embodiments of the present application, a schematic diagram of the positional relationship between the display screen and the optical module after the display screen is horizontally moved in the third embodiment is shown;

[0049] Fig. 9C According to some embodiments of the present application, a schematic diagram of the structure of a display screen and an optical module after a third horizontal movement of the display screen is shown. DETAILED DESCRIPTION

[0050] Illustrative embodiments of the present application include, but are not limited to, virtual reality terminal devices.

[0051] The following first explains the special terms involved in the embodiments of the present application.

[0052] Optical module: In the embodiment of the present application, it is a component of VR glasses, which can perform optical processing on the image displayed on the display screen, such as magnification, and then reflect the processed image to the user's eyes. VR glasses contain two sets of optical modules, corresponding to the user's left eye and right eye respectively, and one set of optical modules usually includes multiple lenses, such as Fresnel lenses.

[0053] Display screen: In the embodiment of the present application, it is a component of VR glasses, used to display images for users to watch. VR glasses contain two display screens, corresponding to the left and right eyes of the user, and the contents displayed on the left and right display screens can be the same or have slight differences.

[0054] Field of View (FOV): The angle between the two edges of the maximum range of the image that the user can see and the user's eyes when wearing VR glasses. It can be understood that when the distance between the user and the image seen remains unchanged, the larger the maximum range of the image, the larger the field of view. In addition, the field of view can be divided into horizontal field of view and vertical field of view. Among them, the horizontal field of view is the angle between the left and right edges of the image and the user's eyes, and the vertical field of view is the angle between the upper and lower edges of the image and the user's eyes.

[0055] Angular resolution: The average number of pixels filled within every 1° angle in the field of view.

[0056] The structure and working principle of the virtual reality terminal device are described below.

[0057] It is understandable that the virtual reality terminal device provided in the embodiment of the present application may be a VR glasses. For ease of description, the present application will be described in the following with the virtual reality terminal device being a VR glasses.

[0058] As mentioned above, according to Figure 1B In the structure shown, the optical and display system of the VR glasses generally includes an optical module 101 (i.e., a first optical module), an optical module 102 (i.e., a second optical module), a display screen 103 (i.e., a first display screen), and a display screen 104 (i.e., a second display screen). Generally, the optical axis center of the optical module 101 coincides with the light emission center of the display screen 103, and the optical axis center of the optical module 102 coincides with the light emission center of the display screen 104.

[0059] In addition, most current VR glasses use liquid crystal displays (LCD) as display screens, but the resolution of LCD screens is low, resulting in a poor visual experience for users. With the development of organic light-emitting diode (OLED) screens, more and more VR glasses use OLED screens with higher resolution and higher pass rates. However, due to the high manufacturing cost of OLED screens, in order to save production costs, the size of OLED screens is usually relatively small, and usually, the size of OLED screens is smaller than the size of optical modules. Figure 1B The display screen 103 and the display screen 104 in the embodiment are both OLED screens, and are composed of Figure 1B It can be seen that the size of the display screen 103 is smaller than the size of the optical module 101 , and the size of the display screen 104 is smaller than the size of the optical module 102 .

[0060] Figure 2 Another schematic diagram showing the positional relationship between an optical module and a display screen is shown. Figure 2 As shown, the user's left eye corresponds to the optical module 101 and the display screen 103 (i.e., the display screen ABDC); the user's right eye corresponds to the optical module 102 and the display screen 104 (i.e., the display screen EFHG). The display screen 103 and the display screen 104 are both the OLED screens mentioned above, so Figure 2 It can be seen that the size of the display screen 103 is smaller than the size of the optical module 101 , and the size of the display screen 104 is smaller than the size of the optical module 102 .

[0061] also, Figure 2The optical axis center of the optical module 101 in the display screen 103 coincides with the luminous center of the display screen 103. Similarly, the optical axis center of the optical module 102 coincides with the luminous center of the display screen 104. The image contents displayed on the display screens 103 and 104 may be the same or may have slight differences. The image content in the display screen 103 is reflected to the user's left eye after being optically processed by the optical module 101, and the image content in the display screen 104 is reflected to the user's right eye after being optically processed by the optical module 102. After the user's two eyes receive the optically processed images respectively, the two images are fused to obtain a three-dimensional image. Among them, the range occupied by the fused image is Figure 2 in the visible range.

[0062] It can be understood that the visible range of the fused image is determined by the image located on the left side of the vertical optical axis and the image located above (or below) the horizontal optical axis in the display screen 103 after the optical axes corresponding to the optical modules 101 and 102 overlap, and the image located on the right side of the vertical optical axis and the image located below (or above) the horizontal optical axis in the display screen 104.

[0063] Specifically, Figure 2 As shown, if the size of display screen 103 and display screen 104 are both m inches × m inches, and the light emitting center of display screen 103 coincides with the center of the optical axis of optical module 101, and the light emitting center of display screen 104 coincides with the center of the optical axis of optical module 102, then the size of the image on the left side of the vertical optical axis of optical module 101 in display screen 103 is 0.5 m inches × m inches. Similarly, the size of the image on the right side of the vertical optical axis of optical module 102 in display screen 104 is also 0.5 m inches × m inches. Based on this, Figure 2 As shown in the visible range, after the optical axes corresponding to the optical modules 101 and 102 are overlapped, the image size on the left side of the vertical optical axis in the image after binocular fusion (at this time, the image in the display screen ABDC and the image in the display screen EFHG overlap) is 0.5m inches × m inches, and the image size on the right side of the vertical optical axis is 0.5m inches × m inches, so the visible range size is the sum of 0.5m inches × m inches and 0.5m inches × m inches, that is, m inches × m inches.

[0064] In addition, not all parts of the visible range have a three-dimensional sense. Usually, when a user wears VR glasses, images within a certain area of ​​the visible range (i.e., the binocular stereoscopic vision area) have a three-dimensional sense, while images within other visible ranges outside this area do not have a three-dimensional sense. Figure 2For example, the shadow part inside the visible range is the image range with a three-dimensional sense, and the shadow part is the image part in the visible range corresponding to the user's reference viewing angle. Among them, the reference viewing angle is usually about 60° to 70°.

[0065] Figure 3 A schematic diagram showing the field of view angles corresponding to the binocular stereoscopic vision area and the visual range is shown. Figure 3 As shown in 3A in FIG. 3A , the angle between the side AC (EG) and the side BD (FH) of the visible range and the user's eyes is the visible field angle, that is, the user can observe all images in the visible range within the visible field angle. Figure 3 As shown in 3B, the angle between the side IJ and the side KL in the visible range and the user's eyes is the reference field angle corresponding to the binocular stereoscopic vision area, that is, the image content observed by the user has a three-dimensional sense within the reference field angle range.

[0066] It can be understood that the binocular stereoscopic vision area ( Figure 2 The shaded area in the figure is the area where the user can feel the stereoscopic effect. No matter how the visual range changes, the user's binocular stereoscopic vision area is fixed relative to the optical axis center of the optical module. Therefore, in order to simplify the content of the drawings, the drawings involved in the following text no longer indicate the areas corresponding to the binocular stereoscopic vision area one by one.

[0067] Therefore, based on the above content, it can be seen that when the display screen is smaller than the size of the optical module, and the light-emitting center of the display screen coincides with the optical axis center of the optical module, the size of the visible range obtained after binocular fusion is still the size of the display screen. Therefore, the user's visible range will be limited, and the size of the visible field angle corresponding to the visible range will also be limited.

[0068] Therefore, in order to solve the above technical problems, the present application provides a virtual reality terminal device, in which a certain offset is provided between the luminous center of the display screen and the optical axis center of the corresponding optical module. For example, the display screen 103 corresponding to the left eye is moved to the left by a preset distance, and the display screen 104 corresponding to the right eye is moved to the right by a preset distance, so that the image range on the left side of the vertical optical axis in the display screen 103 becomes larger, and the image range on the right side of the vertical optical axis in the display screen 104 becomes larger, thereby increasing the horizontal visible range of the overall image. It can be understood that since the size of the display screen corresponding to the upper and lower sides of the horizontal optical axis of the optical module determines the upper and lower spacing of the visible range of the image obtained by binocular fusion, and the size of the display screen corresponding to the left and right sides of the vertical optical axis determines the left and right spacing of the visible range of the image obtained by binocular fusion, it is possible to increase the visible range of the image and the visible field angle by changing the position of the luminous center of the display screen and the optical axis center of the corresponding optical module, and increasing at least one of the size of the display screen corresponding to the upper and lower sides of the horizontal optical axis of the optical module and the size of the display screen corresponding to the left and right sides of the vertical optical axis.

[0069] Among them, by offsetting the light emitting center of the display screen and the optical axis center of the corresponding optical module, the ways to increase the visible range of the image include but are not limited to the following:

[0070] Method 1: Figure 2 The display screen 103 is moved to the left by a distance d (i.e., the horizontal distance between the optical axis center of the optical module 101 and the luminous center of the display screen 103 is d, and d is the first horizontal offset described above), and the display screen 104 is moved to the right by a distance d (i.e., the horizontal distance between the optical axis center of the optical module 102 and the luminous center of the display screen 104 is d, and d is also the second horizontal offset described above), so as to increase the visible range in the horizontal direction and increase the visible field angle in the horizontal direction.

[0071] In this case, the luminous center of the display screen 103 corresponding to the user's left eye has a certain horizontal offset to the left compared with the optical axis center of the optical module 101, and the image content in the display screen 103 moves to the left as a whole by the offset; the luminous center of the display screen 104 corresponding to the user's right eye has a certain horizontal offset to the right compared with the optical axis center of the optical module 102, and the image content in the display screen 104 moves to the right as a whole by the offset.

[0072] After the display screen 103 moves to the left, the size of the image on the display screen 103 located on the left side of the vertical optical axis of the optical module 101 becomes larger. Similarly, after the display screen 104 moves to the right, the size of the image on the display screen 104 located on the right side of the vertical optical axis of the optical module 102 also becomes larger, and the visible range of the image obtained by binocular fusion in the horizontal direction becomes larger, and the visible field angle in the horizontal direction also increases.

[0073] Figure 4A FIG. 1 shows a schematic diagram of the positional relationship between a display screen and an optical module after the display screen is horizontally moved. Figure 4A As shown, the display screen 103 moves to the left by a distance d, and the content displayed in the display screen 103 moves to the left by a distance d as a whole; the display screen 104 moves to the right by a distance d, and the content displayed in the display screen 104 moves to the right by a distance d as a whole.

[0074] As mentioned above, when the sizes of display screen 103 and display screen 104 are both m inches × m inches, and when the luminous center of display screen 103 coincides with the optical axis center of optical module 101, and the luminous center of display screen 104 coincides with the optical axis center of optical module 102, the size of the image located on the left side of the vertical optical axis of optical module 101 in display screen 103 is 0.5 m inches × m inches. Similarly, the size of the image located on the right side of the vertical optical axis of optical module 102 in display screen 104 is also 0.5 m inches × m inches. The visible range of the image after binocular fusion is m inches × m inches.

[0075] When the display screen 103 moves to the left by a distance d, the size of the image on the left side of the vertical optical axis of the optical module 101 in the display screen 103 becomes (0.5m+d) inches×m inches. Similarly, the size of the image on the right side of the vertical optical axis of the optical module 102 in the display screen 104 is also (0.5m+d) inches×m inches. Based on this, Figure 4A As shown in the visible range, the visible range of the image after binocular fusion is the sum of (0.5m+d)inch×1inch and (0.5m+d)inch×minch, that is, (m+2d)inch×minch.

[0076] Therefore, compared to Figure 2In the case where the visible range of the image after binocular fusion is m inches × m inches, the display screen 103 is moved to the left by a distance d, and the display screen 104 is moved to the right by a distance d, and the visible range becomes (m+2d) inches × m inches. From the above content, it can be seen that the visible range increases by a length of 2d in the horizontal direction. The visible range in the horizontal direction becomes larger, and the visible field angle in the horizontal direction also becomes larger. Since the display screen 103 moves to the left by d and the display screen 104 moves to the right by d, the horizontal distance (or space) between the light-emitting centers of the display screens 103 and 104 increases, and other mechanisms or devices, such as an interpupillary distance (IPD) adjustment mechanism, can be placed in this space to achieve the purpose of reasonable use of space.

[0077] In addition, since the resolutions of display screen 103 and display screen 104 remain fixed, as the visible range increases, the visible resolution (the number of pixels in the visible range) is also improved, and the angular resolution is further improved.

[0078] It can be understood that the embodiment of the present application does not limit the size of the distance d. The distance d can be set based on experience or flexibly adjusted according to the actual application scenario, as long as the ratio of d to the size of the display screen (for example, m) does not exceed 50%. That is, the size of the display screen 103 after adjustment must not exceed the size of the optical module 101, and the size of the display screen 104 must not exceed the size of the optical module 102.

[0079] Figure 4B A schematic structural diagram of a display screen and an optical module after the display screen is horizontally moved is shown. Figure 4B The optical module 101, the optical module 102, the display screen 103 and the display screen 104 are included, wherein the display screen 103 and the optical module 101 are arranged in sequence along a first direction, the display screen 104 and the optical module 102 are arranged in sequence along the first direction, and the first direction is the extension direction of the user's line of sight.

[0080] The luminous center of display screen 103 is located on the left side of the vertical optical axis of optical module 101, and the horizontal distance between the vertical optical axis and the vertical optical axis is d; the luminous center of display screen 104 is located on the right side of the vertical optical axis of optical module 104, and the horizontal distance between the vertical optical axis and the vertical optical axis is d.

[0081] Method 2: Figure 2The display screen 103 is moved upward by a distance n (i.e., the vertical distance between the optical axis center of the optical module 101 and the luminous center of the display screen 103 is n, and n is the first vertical offset mentioned above), and the display screen 104 is moved downward by a distance n (i.e., the vertical distance between the optical axis center of the optical module 102 and the luminous center of the display screen 104 is n, and n is also the second vertical offset mentioned above), so as to increase the user's visual range in the vertical direction and increase the visible field angle in the vertical direction.

[0082] In this case, the light emitting center of the display screen 103 corresponding to the user's left eye has a certain vertical upward offset compared with the optical axis center of the optical module 101, and the image content in the display screen 103 moves upward as a whole by the offset; the light emitting center of the display screen 104 corresponding to the user's right eye has a certain vertical downward offset compared with the optical axis center of the optical module 102, and the image content in the display screen 104 moves downward as a whole by the offset.

[0083] After the display screen 103 moves upward, the size of the image located above the horizontal optical axis of the optical module 101 in the display screen 103 becomes larger. Similarly, after the display screen 104 moves downward, the size of the image located below the horizontal optical axis of the optical module 102 in the display screen 104 also becomes larger, and the visible range of the image obtained by binocular fusion in the vertical direction becomes larger, and the visible field angle in the vertical direction also increases.

[0084] Figure 5A FIG. 1 shows a schematic diagram of the positional relationship between a display screen and an optical module after the display screen is vertically moved. Figure 5A As shown, the display screen 103 moves upward by a distance n, and the content displayed in the display screen 103 moves upward by a distance n as a whole; the display screen 104 moves downward by a distance n, and the content displayed in the display screen 104 moves downward by a distance n as a whole.

[0085] When the display screen 103 moves upward by a distance n, the size of the image located above the horizontal optical axis of the optical module 101 in the display screen 103 becomes (0.5m+n) inches × m inches. Similarly, the size of the image located below the optical axis of the optical module 102 in the display screen 104 is also (0.5m+n) inches × m inches. Based on this, Figure 5A As shown in the visible range, the visible range of the image after binocular fusion is the sum of (0.5m+n)inch×1inch and (0.5m+n)inch×minch, that is, (m+2n)inch×minch.

[0086] Therefore, compared to Figure 2In the case where the visible range of the binocular fusion image is m inches × m inches, the display screen 103 is moved upward by a distance n, and the display screen 104 is moved downward by a distance n, and the visible range increases by a length of 2n in the vertical direction. The visible range in the vertical direction increases, and the visible field angle in the vertical direction also increases.

[0087] Since the resolutions of display screen 103 and display screen 104 remain fixed, as the visible range increases, the visible resolution (the number of pixels in the visible range) is also improved, and the angular resolution is further improved.

[0088] Figure 5B A schematic diagram of the structure of a display screen and an optical module after the display screen is vertically moved is shown. Figure 5B The optical module 101, the optical module 102, the display screen 103 and the display screen 104 are included, wherein the display screen 103 and the optical module 101 are arranged in sequence along a first direction, the display screen 104 and the optical module 102 are arranged in sequence along the first direction, and the first direction is the extension direction of the user's line of sight.

[0089] The luminous center of the display screen 103 is located above the horizontal optical axis of the optical module 101, and the vertical distance between the horizontal optical axis and the display screen 104 is located below the horizontal optical axis of the optical module 104, and the vertical distance between the horizontal optical axis and the display screen 104 is n.

[0090] The above method is explained by taking the example that the display screen 103 moves upward by a distance n and the display screen 104 moves downward by a distance n. It can be understood that the display screen 103 can also be moved downward by a distance n and the display screen 104 can be moved upward by a distance n. This method can also increase the length of the visible range by 2n in the vertical direction, thereby increasing the visible field angle in the vertical direction.

[0091] Method 3: Figure 2 The display screen 103 is moved to the left by a distance d and upward by a distance n (i.e., the horizontal distance between the light emitting center of the display screen 103 and the optical axis center of the optical module 101 is d, and the vertical distance is n), and the display screen 104 is moved to the right by a distance d and downward by a distance n (i.e., the horizontal distance between the light emitting center of the display screen 104 and the optical axis center of the optical module 102 is d, and the vertical distance is n), thereby increasing the visible range in both the horizontal and vertical directions.

[0092] Fig. 6A A schematic diagram showing the positional relationship between the display screen and the optical module after the display screen is moved horizontally and vertically is shown. Fig. 6AAs shown, display screen 103 moves to the left by a distance d and up by a distance n, and the content displayed in display screen 103 as a whole moves to the left by a distance d and up by a distance n; display screen 104 moves to the right by a distance d and down by a distance n, and the content displayed in display screen 104 moves to the right by a distance d and down by a distance n as a whole.

[0093] When the display screen 103 moves to the left by a distance d, the size of the image on the left side of the vertical optical axis of the optical module 101 in the display screen 103 becomes (0.5m+d) inches × m inches. Similarly, when the display screen 104 moves to the right by a distance d, the size of the image on the right side of the vertical optical axis of the optical module 102 in the display screen 104 is also (0.5m+d) inches × m inches. When the display screen 103 moves upward by a distance n, the size of the image on the upper side of the horizontal optical axis of the optical module 101 in the display screen 103 becomes (0.5m+n) inches × m inches. Similarly, when the display screen 104 moves downward by a distance n, the size of the image on the lower side of the horizontal optical axis of the optical module 102 in the display screen 104 is also (0.5m+n) inches × m inches.

[0094] Based on this, Fig. 6A As shown in the visible range, the visible range of the image after binocular fusion is (m+2d) inches × m inches in the horizontal direction and (m+2n) inches × m inches in the vertical direction.

[0095] Therefore, compared to Figure 2 In the case where the visible range of the image after binocular fusion is m inches × m inches, the visible range increases by 2n in the vertical direction after the display screen 103 is moved upward by a distance n and the display screen 104 is moved downward by a distance n; the visible range increases by 2d in the horizontal direction after the display screen 103 is moved to the left by a distance d and the display screen 104 is moved to the right by a distance d. Based on this, the user's visible range in the horizontal and vertical directions increases, so that the visible field angles in the horizontal and vertical directions increase accordingly.

[0096] Since the resolutions of display screen 103 and display screen 104 remain fixed, as the visible range increases, the visible resolution (the number of pixels in the visible range) is also improved, and the angular resolution is further improved.

[0097] Figure 6B A schematic diagram of the structure of a display screen and an optical module after the display screen is vertically moved is shown. Figure 6B The optical module 101, the optical module 102, the display screen 103 and the display screen 104 are included, wherein the display screen 103 and the optical module 101 are arranged in sequence along a first direction, the display screen 104 and the optical module 102 are arranged in sequence along the first direction, and the first direction is the extension direction of the user's line of sight.

[0098] The luminous center of the display screen 103 is located on the left side of the vertical optical axis of the optical module 101, with a horizontal distance of d, and is located above the horizontal optical axis, with a vertical distance of n; the luminous center of the display screen 104 is located on the right side of the vertical optical axis of the optical module 104, with a horizontal distance of d, and is located below the horizontal optical axis, with a vertical distance of n.

[0099] The above method is explained by taking the example that the display screen 103 moves to the left by a distance d, the display screen 104 moves to the right by a distance d; the display screen 103 moves upward by a distance n, and the display screen 104 moves downward by a distance n. It can be understood that the display screen 103 can also be moved to the left by a distance d, the display screen 104 moves to the right by a distance d; the display screen 103 moves downward by a distance n, and the display screen 104 moves upward by a distance n. This method can also increase the visual range by a length of 2d in the horizontal direction and by a length of 2n in the vertical direction, thereby increasing the user's visual field angle in both the horizontal and vertical directions.

[0100] It can be understood that the embodiment of the present application does not limit the size of the distance n. The distance n can be set based on experience or flexibly adjusted according to the actual application scenario, as long as the display screen 103 after adjustment does not exceed the size of the optical module 101 and the display screen 104 does not exceed the size of the optical module 102.

[0101] Method 4: The display screen 103 is moved to the left by a distance d, and the display screen 103 is rotated counterclockwise by α (i.e., the first angle described above). In addition, the display screen 104 is moved to the right by a distance d, and the display screen 104 is rotated clockwise by α (i.e., the second angle described above), thereby increasing the user's visual range in the horizontal and vertical directions at the same time.

[0102] Fig. 7A A schematic diagram showing the positional relationship between the display screen and the optical module after horizontal and rotational offset is shown. Fig. 7A As shown, the display screen 103 moves to the left by a distance d and rotates counterclockwise by α, and the content in the display screen 103 also moves to the left by a distance d and rotates counterclockwise by α. The display screen 104 moves to the right by a distance d and rotates clockwise by α, and the content in the display screen 104 also moves to the right by a distance d and rotates clockwise by α.

[0103] According to the first method, after the display screen 103 is moved to the left by a distance d and the display screen 104 is moved to the right by a distance d, the visible range of the image after binocular fusion increases by 2d in the horizontal direction.

[0104] In addition, after the m-inch×m-inch display screen 103 rotates counterclockwise by α and the display screen 104 rotates clockwise by α, the visible range of the image after binocular fusion increases in the horizontal direction by l=2×(cos(45°-α)×0.5√2m-0.5m). Therefore, Fig. 7A The offset method in can increase the visible range of the image after binocular fusion by l+2d in the horizontal direction, and the size of the visible range of the image after binocular fusion in the horizontal direction is m+l+2d.

[0105] Similarly, after the m-inch×m-inch display screen 103 rotates counterclockwise by α and the display screen 104 rotates clockwise by α, the visible range of the image after binocular fusion also increases in the vertical direction by l=2×(cos(45°-α)×0.5√2m-0.5m). Therefore, Fig. 7A The offset method in can increase the visible range of the image after binocular fusion by l in the vertical direction, and the size of the visible range of the image after binocular fusion in the horizontal direction is m+l.

[0106] Figure 7B A schematic diagram of the structure of a display screen and an optical module after the display screen is moved horizontally and rotationally is shown. Figure 7B The optical module 101, the optical module 102, the display screen 103 and the display screen 104 are included, wherein the display screen 103 and the optical module 101 are arranged in sequence along a first direction, the display screen 104 and the optical module 102 are arranged in sequence along the first direction, and the first direction is the extension direction of the user's line of sight.

[0107] The luminous center of the display screen 103 is located on the left side of the vertical optical axis of the optical module 101, and the horizontal distance from the vertical optical axis is d. In addition, the display screen 103 is rotated counterclockwise by α; the luminous center of the display screen 104 is located on the right side of the vertical optical axis of the optical module 102, and the horizontal distance from the vertical optical axis is d. In addition, the display screen 104 is rotated clockwise by α.

[0108] This method rotates the two display screens by a certain angle based on method 1, which can further increase the visual range obtained by binocular fusion in the horizontal and vertical directions, and increase the visible field angle in the horizontal and vertical directions.

[0109] It can be understood that the embodiment of the present application does not limit the size of the rotation angle α. The rotation angle α can be set based on experience or flexibly adjusted according to the actual application scenario, as long as the display screen after the rotation operation is not larger than the size of the optical module.

[0110] It can be understood that the embodiment of the present application only adds rotation offset on the basis of method 1 to increase the user's visual range in the horizontal and vertical directions. In addition, rotation offset can also be added on the basis of method 2 or method 3 to increase the user's visual range in the horizontal direction or the vertical direction.

[0111] It can be understood that the above-mentioned method of shifting the display screen left and right, shifting up and down, and rotating the display screen can be applied not only to square display screens and circular optical modules, but also to display screens and optical modules of other regular or irregular shapes.

[0112] Fig. 8A A schematic diagram showing a display screen that is square and an optical module that is irregular in shape is shown. Fig. 8A Based on the structure shown, the display screen can be moved by using the above-mentioned methods 1 to 4 to increase the visible range and the visible field angle. Fig. 8A Based on the above method, a pair of display screens are moved as an example. Figure 8B As shown, the size of the visible range after the move is still (m+2d) inches × m inches.

[0113] Figure 8C A schematic structural diagram of a display screen and an optical module after the display screen is horizontally moved is shown. Figure 8C The optical module 101, the optical module 102, the display screen 103 and the display screen 104 are included, wherein the display screen 103 and the optical module 101 are arranged in sequence along a first direction, the display screen 104 and the optical module 102 are arranged in sequence along the first direction, and the first direction is the extension direction of the user's line of sight.

[0114] The luminous center of display screen 103 is located on the left side of the vertical optical axis of optical module 101, and the horizontal distance between the vertical optical axis and the vertical optical axis is d; the luminous center of display screen 104 is located on the right side of the vertical optical axis of optical module 102, and the horizontal distance between the vertical optical axis and the vertical optical axis is d.

[0115] For other changes in the visual range using methods 2 to 4, please refer to the previous description and will not be repeated here.

[0116] Fig.9A A schematic diagram showing a display screen of a heptagonal shape and an optical module of an irregular shape is shown. Fig.9A Based on the structure shown, the display screen can be moved by using the above-mentioned methods 1 to 4 to increase the visible range and the visible field angle. Fig.9A Based on the above method, a pair of display screens are moved as an example. Fig. 9BAs shown, if the size of the display screen 103 and the display screen 104 are both m inches × p inches, then the size of the visible range after the display screens are moved in the above manner becomes (m+2d) inches × p inches. The changes in the visible range of other methods 2 to 4 can be found in the previous description and will not be repeated here.

[0117] Fig. 9C Another schematic diagram of the structure of a display screen and an optical module after the display screen is moved horizontally is shown. Fig. 9C The optical module 101, the optical module 102, the display screen 103 and the display screen 104 are included, wherein the display screen 103 and the optical module 101 are arranged in sequence along a first direction, the display screen 104 and the optical module 102 are arranged in sequence along the first direction, and the first direction is the extension direction of the user's line of sight.

[0118] The luminous center of display screen 103 is located on the left side of the vertical optical axis of optical module 101, and the horizontal distance between the vertical optical axis and the vertical optical axis is d; the luminous center of display screen 104 is located on the right side of the vertical optical axis of optical module 102, and the horizontal distance between the vertical optical axis and the vertical optical axis is d.

[0119] In the virtual reality terminal device provided in the embodiment of the present application, there is a certain offset between the luminous center of the display screen and the optical axis center of the corresponding optical module, and the size of the display screen corresponding to the upper and lower sides of the horizontal optical axis of the optical module is increased, or the size of the display screen corresponding to the left and right sides of the vertical optical axis is increased, so as to increase the visible range of the image and increase the visible field angle. Since the resolution of the display screen 103 and the display screen 104 is fixed, the visible range increases, the visible resolution (the number of pixels in the visible range) is also improved, and the angular resolution is also improved. In addition, after the display screen 103 and the display screen 104 are moved respectively, the space between the luminous centers of the two screens increases, and other mechanisms or devices can be placed in the space to make rational use of the space.

[0120] In the accompanying drawings, some structural or method features may be shown in a specific arrangement and / or order. However, it should be understood that such a specific arrangement and / or order may not be required. Instead, in some embodiments, these features may be arranged in a manner and / or order different from that shown in the illustrative drawings. In addition, the inclusion of structural or method features in a particular figure does not mean that such features are required in all embodiments, and in some embodiments, these features may not be included or may be combined with other features.

[0121] It should be noted that in the examples and description of this patent, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "including one" do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0122] Although the present application has been illustrated and described with reference to certain preferred embodiments thereof, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the scope of the present application.

Claims

1. A virtual reality terminal device, characterized in that: The device comprises a first display screen, a first optical module, a second display screen and a second optical module, wherein the first optical module is used to receive a first light emitted by the first display screen during image display, and project the first light after optical processing to the left eye, and the second optical module is used to receive a second light emitted by the second display screen during image display, and project the second light after optical processing to the right eye; and The light emitting center of the first display screen has a first offset relative to the optical axis center of the first optical module, and the light emitting center of the second display screen has a second offset relative to the optical axis center of the second optical module.

2. The virtual reality terminal device according to claim 1, characterized in that: The first offset and the second offset both include at least one of a horizontal offset and a vertical offset.

3. The virtual reality terminal device according to claim 2, characterized in that: The first offset and the second offset both include the horizontal offset; and, The light emitting center of the first display screen has a first horizontal offset in a first direction relative to the optical axis center of the first optical module, wherein the first direction is a left direction of the vertical optical axis of the first optical module; The light emitting center of the second display screen has a second horizontal offset in a second direction relative to the optical axis center of the second optical module, wherein the second direction is the right side direction of the vertical optical axis of the second optical module.

4. The virtual reality terminal device according to claim 2, characterized in that: The first offset and the second offset both include the vertical offset; and, The light emitting center of the first display screen has a first vertical offset in a third direction relative to the optical axis center of the first optical module, wherein the third direction is an upper direction of the horizontal optical axis of the first optical module; The light emitting center of the second display screen has a second vertical offset in a fourth direction relative to the optical axis center of the second optical module, wherein the fourth direction is a lower side direction of the horizontal optical axis of the second optical module.

5. The virtual reality terminal device according to claim 2, characterized in that: The first offset and the second offset both include the horizontal offset and the vertical offset; and, The light emitting center of the first display screen has a first horizontal offset in a first direction relative to the optical axis center of the first optical module, and has a first vertical offset in a third direction, wherein the first direction is a left side direction of the vertical optical axis of the first optical module, and the third direction is an upper side direction of the horizontal optical axis of the first optical module; The light emitting center of the second display screen has a second horizontal offset in the second direction relative to the optical axis center of the second optical module, and has a second vertical offset in the fourth direction, wherein the second direction is the right side direction of the vertical optical axis of the second optical module, and the fourth direction is the lower side direction of the horizontal optical axis of the second optical module.

6. The virtual reality terminal device according to any one of claims 1 to 5, characterized in that: The first central axis of the first display screen and the horizontal optical axis of the first optical module have a first angle in the counterclockwise direction, and the second central axis of the first display screen and the vertical optical axis of the first optical module have the first angle in the counterclockwise direction; and The third central axis of the second display screen and the horizontal optical axis of the second optical module have a second angle in the clockwise direction, and the fourth central axis of the second display screen and the vertical optical axis of the second optical module have the second angle in the clockwise direction.

7. The virtual reality terminal device according to claim 6, characterized in that: The size of the first display screen is smaller than or equal to the size of the first optical module, and the size of the second display screen is smaller than or equal to the size of the second optical module.

8. The virtual reality terminal device according to claim 7, characterized in that: The range boundary of the first display screen does not exceed the range boundary of the first optical module, and the range boundary of the second display screen does not exceed the range boundary of the second optical module.

9. The virtual reality terminal device according to claim 8, characterized in that: The ratio of the first offset to the size of the first display screen is less than 50%, and the ratio of the second offset to the size of the second display screen is less than 50%.

10. The virtual reality terminal device according to claim 9, characterized in that: The shape and size of the first display screen are the same as those of the second display screen, and the shape and size of the first optical module are the same as those of the second optical module.

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