Optical system for virtual reality device and virtual reality device

Abstract

The present invention relates to an optical system for a virtual reality device and a virtual reality device. The optical system for the virtual reality device includes: a first display and a second display; an optical component, which is arranged corresponding to the first display and the second display and is used to project the images of the first display and the second display; wherein the display image of the second display is the same as the display image of the first area in the first display, and after being projected by the optical component, the image of the second display overlaps with the image of the first area to improve the image clarity of the first area. Through the technical solution of the present invention, while obtaining a larger field of view angle, a high-definition video image can still be obtained in the actual visual eye focus area, reducing the impact on the image clarity, thereby providing users with a high-definition virtual reality image, which is conducive to improving user experience.

Description

Technical Field

[0001] The present invention relates to the field of virtual reality technology, and in particular to an optical system for a virtual reality device and a virtual reality device. Background Art

[0002] In existing virtual reality (VR) products, a single display system is usually used, that is, a single DP (Display Port, a digital display interface standard) is used to transmit the video signal of a PC (Personal Computer), and a single or two displays are used to display the image of the video signal. However, in order to obtain a larger field of view (FOV), a large-size display is required, such as a TFT LCD (Thin Film Transistor Liquid Crystal Display), but the pixel density of a large-size display is generally not very high. For example, the pixel density of a commonly used TFT LCD is 800-1200 PPI (pixels per inch, the unit of pixel density), which affects the clarity of the video image. Users cannot feel the ultimate effect of high-definition video images, which seriously affects the user experience. Summary of the invention

[0003] In view of this, the present invention provides an optical system for a virtual reality device and a virtual reality device.

[0004] In order to solve the above technical problems, the present invention provides an optical system for a virtual reality device, comprising: a first display and a second display; an optical component, which is arranged corresponding to the first display and the second display, and is used to project the images of the first display and the second display; wherein the display image of the second display is the same as the display image of the first area in the first display, and after being projected by the optical component, the image of the second display overlaps with the image of the first area, so as to improve the image clarity of the first area.

[0005] In a feasible implementation, the pixel density of the first display is lower than that of the second display, and the size of the first display is larger than that of the second display.

[0006] In a feasible implementation, the first display and the second display are arranged at a certain angle.

[0007] In a feasible implementation, the second display is located on the side of the first display facing the optical component; wherein the angle between the light propagation direction of the first display and the normal direction of the first display is a first angle, the angle between the light propagation direction of the second display and the normal direction of the first display is a second angle, and the first angle and the second angle are equal in size.

[0008] In a feasible implementation, the first display and the second display are arranged on the same side of the optical component.

[0009] In a feasible implementation, the first display is arranged in parallel with the optical component, and the second display is arranged perpendicular to the first display.

[0010] In a feasible implementation, in a direction parallel to the optical component and the first display, there is a first distance between the second display and the optical component, there is a second distance between the second display and the first display, and the second distance is smaller than the first distance.

[0011] In a feasible implementation, the first area is located in a middle area of ​​the first display.

[0012] In a feasible implementation, the first display is a 4K TFT LCD (Thin Film TransistorLiquid Crystal Display); the second display is a 2K Micro OLED (MicroOLED microdisplay, using a single crystal silicon wafer as a backplane, has the characteristics of self-luminescence, thin thickness, light weight, large viewing angle, short response time, high luminous efficiency, small size, easy to carry, low power consumption, and easier to achieve high pixel density). It can be understood that the pixel density of MicroOLED is relatively high, with the lowest pixel density of 3000PPI, but it is difficult to make a large size, while TFT LCD can be made in large size, but the pixel density is not high. The pixel density currently in use is only 807PPI, and the highest is 1200PPI. In this embodiment, through the combination of TFT LCD and Micro OLED, the pixel density of the picture can be effectively improved while increasing the size of the display to display a high-definition picture.

[0013] In a feasible implementation, the optical system for the virtual reality device also includes: a shell, on which a viewing window is provided; an optical component, a first display and a second display are all arranged in the shell; wherein the optical component is arranged corresponding to the viewing window, and the image of the second display is reflected by the first display and then projected onto the optical component.

[0014] The present invention also provides a virtual reality device, comprising a conversion module, which can receive a first signal from a computer device and convert the first signal into a second signal; a plurality of optical systems for the virtual reality device in any of the above items are electrically connected to the conversion module; wherein the conversion module can send a second signal to a first display and a second display in each optical system for the virtual reality device.

[0015] In one feasible implementation, the conversion module includes: a first converter, electrically connected to each first display, the first converter is used to convert a first signal from a computer device into a second signal, and transmit the second signal to each first display; a second converter, electrically connected to each second display, the second converter is used to convert a first signal from a computer device into a second signal, and transmit the second signal to each second display.

[0016] In a feasible implementation, the first signal includes a video signal received by DP (Display Port, a digital display interface standard), and the second signal includes a video signal receivable by MIPI DSI (Mobile Industry Processor Interface Display Serial Interface, a display serial interface that complies with the mobile industry processor interface protocol); the first converter and / or the second converter is a data conversion chip, which is used to convert data of the first signal from the computer device into data of the second signal, and transmit it to each first display and / or each second display.

[0017] The beneficial effects of the present invention are embodied in:

[0018] Through the technical solution of the present invention, when displaying high-definition video images from a PC, a large-size display is used, so that a larger field of view can be obtained while still obtaining high-definition video images in the actual visual eye focus area, thereby reducing the impact on image clarity, thereby providing users with high-definition virtual reality images, which is conducive to improving user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 FIG. 1 is a schematic diagram of an optical system for a virtual reality device provided by an embodiment of the present invention.

[0020] Figure 2 FIG. 1 is a schematic diagram of a first display of an optical system for a virtual reality device provided by an embodiment of the present invention.

[0021] Figure 3 FIG. 1 is a schematic diagram of an optical system for a virtual reality device provided by an embodiment of the present invention.

[0022] Figure 4 FIG. 1 is a schematic diagram of an optical system for a virtual reality device provided by an embodiment of the present invention.

[0023] Figure 5 FIG. 1 is a schematic diagram of an optical system for a virtual reality device provided by an embodiment of the present invention.

[0024] Figure 6 FIG. 1 is a schematic diagram of an optical system for a virtual reality device provided by an embodiment of the present invention.

[0025] Figure 7 FIG. 4 is a schematic block diagram of a virtual reality device provided by an embodiment of the present invention.

[0026] Figure 8 FIG. 4 is a schematic block diagram of a virtual reality device provided by an embodiment of the present invention.

[0027] Fig. 9 FIG. 4 is a schematic block diagram of a virtual reality device provided by an embodiment of the present invention.

[0028] Description of reference numerals:

[0029] 1 optical system for virtual reality device, 11 first display, 111 first area, 12 second display, 13 optical component, 14 housing, 141 viewing window, 21 PC, 22 eye, 3 virtual reality device, 31 conversion module, 311 first converter, 312 second converter. DETAILED DESCRIPTION

[0030] In the description of the application, the meaning of "multiple" is at least two, for example, two, three, etc., unless otherwise clearly and specifically limited. In the embodiment of the present application, all directional indications (such as up, down, left, right, front, back, top, bottom ...) are only used to explain the relative position relationship, motion conditions, etc. between the components under a certain specific posture (as shown in the drawings). If the specific posture changes, the directional indication also changes accordingly. In addition, the terms "including" and "having" and any of their deformations are intended to cover non-exclusive inclusions. For example, the process, method, system, product or equipment comprising a series of steps or units are not limited to the steps or units listed, but optionally also include the steps or units not listed, or optionally also include other steps or units inherent to these processes, methods, products or equipment.

[0031] In addition, the reference to "embodiment" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiment may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0032] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0033] like Figure 1 As shown, in one embodiment of the present invention, an optical system 1 for a virtual reality device is provided, which can display the video images of the virtual reality device.

[0034] In this embodiment, if Figure 1 and Figure 2 As shown, the optical system 1 for a virtual reality device includes a first display 11, a second display 12, and an optical component 13. The first display 11 and the second display 12 are both arranged corresponding to the optical component 13, so that the video images of the first display 11 and the second display 12 are optically processed and projected outwardly through the optical component 13 for viewing by the user. Among them, a first area 111 is provided in the first display 11. After the image is projected by the optical component 13, the image of the second display 12 overlaps with the image of the first area 111 of the first display 11, so that the clarity of the image of the first area 111 is enhanced by superposition of the double images, so as to provide a high-definition image to the user.

[0035] It should be noted that the first area 111 can be set according to the user's viewing needs so that the first area 111 is located in the actual visual focus area of ​​the user's eyes 22, so that the picture within the user's visual focus range is a high-definition video picture.

[0036] It is understandable that in existing virtual reality products, in order to obtain a larger field of view, the pixel density of the picture will be affected after the size of the display is expanded. Considering the user's viewing experience, the size of the display is subject to certain restrictions.

[0037] The optical system 1 for the virtual reality device in this embodiment can cooperate with dual monitors. When displaying high-definition video images from a PC, a large-size monitor can be used. While obtaining a larger field of view, high-definition video images (such as 4K images) are still obtained in the actual visual eye focus area, thereby providing users with high-definition virtual reality images, which is conducive to improving user experience.

[0038] It should be noted that the electrical connection described in the embodiments of the present invention includes but is not limited to a communication connection. Specifically, the electrical connection includes a wired communication connection and a wireless communication connection.

[0039] In some embodiments of the present invention, Figure 1 As shown, the pixel density of the first display 11 is lower than that of the second display 12, and at the same time, the size of the first display 11 is larger than that of the second display 12. On the one hand, by utilizing the small size and high pixel density of the second display 12, after the picture of the second display 12 overlaps with the picture of the first area 111 of the first display 11, the picture superposition effect is utilized to enhance the picture clarity of the first area 111 in the final display picture, so that the user can see the high-definition video picture in the actual visual eye focus area when watching, so as to experience the ultimate effect of the virtual reality picture; on the other hand, by utilizing the large size of the first display 11, the field of view of the final display picture is increased, thereby achieving dual optimization of the field of view and clarity. In some embodiments of the present invention, such as Figure 3 As shown, the first display 11 and the second display 12 are arranged at a certain angle, so that the first display 11, the second display 12 and the optical component 13 conform to a certain geometric relationship, so that the picture light of the second display 12 can be transmitted to the optical component 13 at the same angle as the picture light of the first display 11 after being reflected by the first display 11, so as to provide conditions for the picture to overlap.

[0040] In some embodiments of the present invention, Figure 3 As shown, the second display 12 is located on the side of the first display 11 facing the optical component 13 to facilitate the propagation of the picture light. Specifically, when the picture light of the first display 11 propagates toward the optical component 13, the propagation direction forms a first angle a with the normal direction of the first display 11; when the picture light of the second display 12 propagates toward the first display 11, the propagation direction forms a second angle b with the normal of the first display 11; wherein, the first angle a and the second angle b are equal in magnitude. According to the principle of light reflection, after the light of the second display 12 is reflected by the first display 11, the reflection angle is the same as the second angle b, and the light can be propagated toward the optical component 13 at the same first angle a, so that the picture of the second display 12 can overlap with the picture of the first area 111 of the first display 11.

[0041] Furthermore, if Figure 4 As shown, the first display 11 and the second display 12 are both located on the same side of the optical component 13 to shorten the distance between the first display 11 and the second display 12, facilitate arrangement, shorten the distance of light propagation, reduce the possibility of light being blocked or interfered, and at the same time, help to further reduce the overall size of the device.

[0042] In some embodiments of the present invention, Figure 4 As shown, the first display 11 and the optical component 13 are arranged parallel to each other, and the second display 12 and the first display 11 are arranged perpendicular to each other, so that the light propagation angles of the first display 11 and the second display 12 remain uniform, which is beneficial to the reflection and propagation of the image of the second display 12.

[0043] Furthermore, if Figure 4 As shown, in the parallel direction between the first display 11 and the optical component 13, that is, the extension direction of the first display 11 or the extension direction of the optical component 13, the second display 12 and the first display 11 and the optical component 13 have a certain distance, specifically, in this direction, the distance between the second display 12 and the optical component 13 is the first distance L1, and the distance between the second display 12 and the first display 11 is the second distance L2, wherein the second distance L2 is smaller than the first distance L1, that is, in this direction, the second display 12, the first display 11 and the optical component 13 are staggered, which conforms to the optical reflection principle, and can facilitate the image of the second display 12 to propagate to the optical component 13 through the reflection of the first display 11, and at the same time can prevent the second display 12 from blocking or interfering with the propagation of light. The specific values ​​of the first distance L1 and the second distance L2 can be set according to the actual size, and in particular, the second distance L2 can be zero.

[0044] It can be understood that if the first spacing L1 is less than or equal to the second spacing L2, the first angle a and the second angle b will be too large, that is, the light reflection angle of the second display 12 will increase. In order to meet the light reflection requirements, a larger optical component needs to be used, resulting in the need for the entire device to occupy a larger space, resulting in increased costs. On the other hand, if the second display 12 is too close to the light element, it may block part of the screen of the first display 11, affecting the final presentation of the screen.

[0045] In some embodiments of the present invention, Figure 1 and Figure 2As shown, in the first display 11, the first area 111 is located in the middle area of ​​the first display 11, and the middle area includes the center position and the position close to the center of the first display 11. Since the actual eye focus area is mainly concentrated in the middle position of the picture when the user's eyes 22 watch the video picture, the clarity of the picture in this area has a greater impact on the user's viewing experience. The setting method in this embodiment can enhance the pixel density of the picture of the first area 111 by overlapping the picture of the second display 12 with the picture of the first area 111, so that when the user watches, the eye focus area can present a high-definition video picture, so as to improve the ultimate virtual reality experience for the user. It should be noted that the specific position of the first area 111 can be set according to the viewing requirements. For example, the distance between the geometric center of the first area 111 and the geometric center of the first display 11 can be set to be less than a preset value to ensure that the first area 111 is in the middle area of ​​the first display 11.

[0046] In some embodiments of the present invention, Figure 5 As shown, the optical component 13 is specifically a lens. The lens focuses the image light of the first display 11 and the second display 12 and then projects it outward, so that the focus of the final image is located at the corresponding position of the user's eye 22 to meet the user's viewing requirements.

[0047] In some embodiments of the present invention, Figure 5 As shown, the first display 11 specifically includes a 5.5-inch 4K TFTLCD, and the second display 12 includes a 1-inch 2K Micro OLED. Micro OLED uses a single-crystal silicon wafer as a backplane, and has the characteristics of self-luminescence, thin thickness, light weight, large viewing angle, short response time, high luminous efficiency, small size, easy to carry, low power consumption, and is easier to achieve high pixel density. It can be understood that the pixel density of Micro OLED is relatively high, with the lowest pixel density being 3000PPI, but it is difficult to make a larger size, while TFT LCD can be made in a larger size, but the pixel density is not high. The pixel density currently in use is 807PPI, and the highest is only 1200PPI. In this embodiment, through the combination of TFT LCD and Micro OLED, the pixel density of the picture can be effectively improved while increasing the size of the display to display a high-definition picture.

[0048] In addition, the 5.5-inch screen size of the first display 11 is adapted to the user's eyes 22. The second display 12, as a device to assist in enhancing pixel density, adopts a 1-inch 2K Micro OLED. After the image is projected, it can cover the range of the user's actual visual eye focus area. At the same time, it can reduce the equipment cost and the overall space volume of the device.

[0049] It should be emphasized that due to the influence of production equipment parameters, the screen size of common Micro OLED is usually small, resulting in a limited field of view; and due to the limitations of manufacturing processes, the pixel density of common TFT LCD is usually not high, and can only support a maximum of 1200PPI (pixels per inch, the unit of pixel density). In the technical solution of this embodiment, through the combination of 5.5-inch 4K TFT LCD and 1-inch 2K Micro OLED, the picture pixel density of the actual visual eye focus area can be effectively improved, so that the 4K high-definition video picture from the computer device can be displayed normally.

[0050] It should be noted that the technical solution of the present invention is not limited to the example in this embodiment, and the first display 11 and the second display 12 may also be displays of other sizes, wherein the size of the second display 12 is much smaller than that of the first display 11.

[0051] In some embodiments of the present invention, Figure 6 As shown, the optical system 1 for a virtual reality device includes a first display 11, a second display 12, an optical component 13 and a housing 14. The housing 14 is used as a mounting base, and the first display 11, the second display 12 and the optical component 13 are all arranged in the housing 14. A viewing window 141 is arranged on the housing 14 to facilitate viewing by the user's eyes 22 when the user uses it. The optical component 13 is arranged corresponding to the viewing window 141, so that the images of the first display 11 and the second display 12 can be transmitted outward through the viewing window 141 after being projected by the optical component 13, so as to facilitate user observation. In the process of propagation, the image light of the second display 12 first propagates to the surface of the first display 11, and after being reflected by the first display 11, it propagates to the optical component 13 together with the image light of the first display 11, and then is processed by the optical component 13 and projected to the viewing window 141. The first display 11, the second display 12 and the optical component 13 are integrated through the housing 14 to achieve an integrated design for easy use.

[0052] In one embodiment of the present invention, a virtual reality device 3 is provided, such as Figure 7 As shown, the virtual reality device 3 includes a conversion module 31 and a plurality of optical systems 1 for virtual reality devices in any of the above embodiments. Each optical system 1 for virtual reality devices is electrically connected to the conversion module 31; the conversion module 31 can be electrically connected to a computer device (such as a PC 21) to receive a first signal from the computer device, and can convert the first signal into a second signal to transmit a video signal that meets the requirements to the first display 11 and the second display 12.

[0053] Specifically, Figure 1 and Figure 7 As shown, in each optical system 1 for a virtual reality device, the conversion module 31 sends a second signal to the first display 11 and the second display, so that the first display 11 and the second display 12 respectively display corresponding video images, which are then projected outward through the light element, wherein the display image of the second display 12 is the same as the display image in the first area 111 of the first display 11, and in the final presentation image, the image of the second display 12 overlaps with the image in the first area 111, thereby increasing the pixel density of the image in the first area 111.

[0054] It should be noted that the number of optical systems 1 used for the virtual reality device can be two or other numbers greater than two, and can be specifically set according to usage requirements.

[0055] The virtual reality device 3 in this embodiment can firstly convert the video signal from the computer device to meet the display requirements. Secondly, it can improve the picture clarity of the actual visual eye focus area through the dual display mode of the optical system 1 used for the virtual reality device to display high-definition video images (such as 4K images). It can increase the field of view angle while ensuring the picture clarity of the actual visual eye focus area, that is, expand the size of the display screen, so as to present the ultimate video image to the user, which is conducive to improving the user experience.

[0056] In addition, the virtual reality device 3 in this embodiment should also have all the beneficial effects of the optical system 1 for a virtual reality device in any of the above embodiments, which will not be described in detail here.

[0057] In some embodiments of the present invention, Figure 8 As shown, the conversion module 31 specifically includes a first converter 311 and a second converter 312. The first converter 311 is electrically connected to each first display 11, and the second converter 312 is electrically connected to each second display 12. The two video signals from the PC 21 are converted by the first converter 311 and the second converter 312 respectively. In the working state, the first converter 311 receives a first signal from the PC 21, converts it into a second signal, and then sends the second signal to each first display 11; similarly, the second converter 312 receives another first signal from the PC 21, converts it into a second signal, and then sends the second signal to each second display 12.

[0058] Further, the first signal includes a video signal received by the DP, and the second signal includes a video signal receivable by the MIPI DSI. Fig. 9As shown, in the virtual reality device 3 in this embodiment, the first converter 311 and the second converter 312 are both data conversion chips, which are used to convert the data of the first signal into the data of the second signal, and can transmit the converted data of the second signal to the first display 11 and the second display 12 to display the corresponding video picture; each optical component of the optical system 1 for the virtual reality device is specifically a lens, the first display 11 is specifically a 5.5-inch 4K TFT LCD, and the second display 12 is specifically a 1-inch 2K Micro OLED, so that the 4K TFT LCD is used as the main display screen, which is mainly used to increase the screen size and field of view, and the pixel density of the overlapping area is enhanced by overlapping the dual-screen images of the 2K Micro OLED and the 4K TFT LCD, thereby improving the picture clarity.

[0059] Furthermore, if Figure 8 and Fig. 9 As shown, in the virtual reality device 3 of this embodiment, two sets of optical systems 1 for virtual reality devices are provided, so as to realize a dual display mode, and in the final presentation picture of each optical system 1 for virtual reality devices, the first area 111 can present a high-definition video picture, so as to ensure the high definition of the picture in the actual eye focus area when the user watches. When applied to products such as virtual reality glasses or helmets, it can correspond to the user's eyes. Of course, the number of optical systems 1 for virtual reality devices in this embodiment can also be other numbers greater than two.

[0060] The following is a specific embodiment of the virtual reality device 3 of the present invention:

[0061] like Figure 8 As shown, the virtual reality device 3 includes a conversion module 31 and two optical systems 1 for the virtual reality device.

[0062] The conversion module 31 includes a first converter 311 and a second converter 312, wherein Fig. 9 As shown, the first converter 311 and the second converter 312 are both data conversion chips; the first converter 311 and the second converter 312 can be electrically connected to the PC 21 to receive a first signal from the PC 21 (i.e., a video signal received through DP) and convert the first signal into a second signal (a video signal receivable by MIPI DSI).

[0063] like Figure 4 and Figure 6As shown, each optical system 1 for a virtual reality device includes a first display 11, a second display 12, an optical component 13 and a housing 14. Each first display 11 is electrically connected to a first converter 311, and each second display 12 is electrically connected to a second converter 312. In a working state, the first converter 311 receives a first signal from a PC 21, converts it into a second signal, and then sends the second signal to each first display 11; similarly, the second converter 312 receives another first signal from the PC 21, converts it into a second signal, and then sends the second signal to each second display 12. Specifically, as Figure 5 As shown, the optical component 13 is a lens, the first display 11 is a 5.5-inch 4K TFT LCD, and the second display 12 is a 1-inch 2K Micro OLED.

[0064] like Figure 6 As shown, the housing 14 serves as a mounting base, and the first display 11, the second display 12 and the optical assembly 13 are all arranged in the housing 14. A viewing window 141 is arranged on the housing 14, and the optical assembly 13 is arranged corresponding to the viewing window 141, so that the images of the first display 11 and the second display 12 can be transmitted outward through the viewing window 141 after being projected by the optical assembly 13, so as to facilitate user observation. Among them, the first display 11 and the second display 12 are located on the same side of the optical assembly 13, and the second display 12 is located on the side of the first display 11 facing the optical assembly 13. The first display 11 and the second display 12 are arranged at a certain angle. Specifically, the first display 11 and the optical assembly 13 are arranged parallel to each other, and the second display 12 and the first display 11 are arranged perpendicular to each other, so that the first display 11, the second display 12 and the optical assembly 13 meet a certain geometric relationship, which is conducive to the transmission of the image light. During the transmission process, the image of the second display 12 first propagates to the surface of the first display 11 , and after being reflected by the first display 11 , it propagates toward the optical component 13 together with the image of the first display 11 , and is then projected toward the viewing window 141 after being processed by the optical component 13 .

[0065] like Figure 3As shown, the pixel density of the first display 11 is smaller than that of the second display 12, and the size of the first display 11 is larger than that of the second display 12. Specifically, when the picture light of the first display 11 propagates toward the optical component 13, the propagation direction forms a first angle a with the normal direction of the first display 11; when the picture light of the second display 12 propagates toward the first display 11, the propagation direction of the light forms a second angle b with the normal of the first display 11; the first angle a and the second angle b are equal in magnitude. According to the principle of light reflection, after being reflected by the first display 11, the light of the second display 12 can propagate toward the optical component 13 at the same first angle a, so that the picture of the second display 12 can overlap with the picture of the first area 111 of the first display 11.

[0066] like Figure 4 As shown, in the parallel direction between the first display 11 and the optical component 13, that is, the extension direction of the first display 11 or the extension direction of the optical component 13, the spacing between the second display 12 and the optical component 13 is a first spacing L1, and the spacing between the second display 12 and the first display 11 is a second spacing L2, wherein the second spacing L2 is smaller than the first spacing L1, that is, in this direction, the second display 12, the first display 11 and the optical component 13 are staggered to comply with the principle of optical reflection, so that the picture light of the second display 12 is reflected by the first display 11 and propagated to the optical component 13, and at the same time, it can prevent the second display 12 from blocking or interfering with the propagation of light.

[0067] like Figure 2 As shown, a first area 111 is provided in the middle area of ​​the first display 11, and the middle area specifically includes the middle position and the position close to the middle position of the first display 11. During the transmission process, the picture of the second display 12 firstly transmits to the surface of the first display 11, and after being reflected by the first display 11, it transmits to the optical component 13 together with the picture of the first display 11, and then is projected to the viewing window 141 after being processed by the optical component 13. In the final presentation picture, the picture of the second display 12 coincides with the picture in the first area 111, so as to enhance the pixel density of the picture of the first area 111 by superposition of double pictures, so that the actual visual eye focus area of ​​the user can present a high-definition video picture, thereby improving the user's viewing experience. Specifically, the specific position of the first area 111 can be set according to the viewing requirements. For example, the distance between the geometric center of the first area 111 and the geometric center of the first display 11 can be set to be less than a preset value to ensure that the first area 111 is in the middle area of ​​the first display 11.

[0068] It should be noted that the electrical connection described in the embodiments of the present invention includes but is not limited to a communication connection. Specifically, the electrical connection includes a wired communication connection and a wireless communication connection.

[0069] In addition, the virtual reality device 3 in this embodiment also has all the beneficial effects of the optical system 1 for a virtual reality device in any of the above embodiments, which will not be described in detail here.

[0070] The basic principle of the present invention is described above in conjunction with specific embodiments. However, it should be pointed out that the advantages, strengths, effects, etc. mentioned in the present invention are only examples and not limitations, and it cannot be considered that these advantages, strengths, effects, etc. must be possessed by each embodiment of the present invention. In addition, the specific details disclosed above are only for the purpose of illustration and facilitation of understanding, rather than limitation, and the above details do not limit the present invention to being implemented by adopting the above specific details.

[0071] The block diagrams of the devices, apparatuses, equipment, and systems involved in the present invention are only illustrative examples and are not intended to require or imply that they must be connected, arranged, and configured in the manner shown in the block diagrams. As will be appreciated by those skilled in the art, these devices, apparatuses, equipment, and systems can be connected, arranged, and configured in any manner. Words such as "including", "comprising", "having", etc. are open words, referring to "including but not limited to", and can be used interchangeably with them. The words "or" and "and" used here refer to the words "and / or" and can be used interchangeably with them, unless the context clearly indicates otherwise. The word "such as" used here refers to the phrase "such as but not limited to", and can be used interchangeably with it.

[0072] It should also be noted that in the device and apparatus of the present invention, each component can be decomposed and / or reassembled, and such decomposition and / or reassembly should be regarded as an equivalent solution of the present invention.

[0073] The above description of the disclosed aspects is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these aspects will be readily apparent to those skilled in the art, and the general principles defined herein may be applied to other aspects without departing from the scope of the present invention. Therefore, the present invention is not intended to be limited to the aspects shown herein, but rather to the widest scope consistent with the principles and novel features of the present invention.

[0074] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An optical system (1) for a virtual reality device, characterized in that: include: A first display (11) and a second display (12); an optical component (13), arranged corresponding to the first display (11) and the second display (12), and used for projecting images of the first display (11) and the second display (12); The display screen of the second display (12) is the same as the display screen of the first area (111) of the first display (11); the screen light of the second display (12) is first propagated to the surface of the first display (11); after being reflected by the first display (11), it is propagated to the optical component (13) together with the screen light of the first display (11); and after being projected by the optical component (13), the screen of the second display (12) overlaps with the screen of the first area (111), so as to improve the clarity of the screen of the first area (111); The pixel density of the first display (11) is lower than that of the second display (12), and the size of the first display (11) is larger than that of the second display (12).

2. The optical system (1) for a virtual reality device according to claim 1, characterized in that: The first display (11) and the second display (12) are arranged at a certain angle.

3. The optical system (1) for a virtual reality device according to claim 2, characterized in that: The second display (12) is located on a side of the first display (11) facing the optical component (13); The angle between the light propagation direction of the first display (11) and the normal direction of the first display (11) is a first angle, the angle between the light propagation direction of the second display (12) and the normal direction of the first display (11) is a second angle, and the first angle and the second angle are equal in size.

4. The optical system (1) for a virtual reality device according to claim 3, characterized in that: The first display (11) and the second display (12) are arranged on the same side of the optical component (13).

5. The optical system (1) for a virtual reality device according to claim 4, characterized in that: The first display (11) is arranged in parallel with the optical component (13), and the second display (12) is arranged perpendicular to the first display (11).

6. The optical system (1) for a virtual reality device according to claim 5, characterized in that: In a direction parallel to the optical component (13) and the first display (11), there is a first distance between the second display (12) and the optical component (13), there is a second distance between the second display (12) and the first display (11), and the second distance is smaller than the first distance.

7. The optical system (1) for a virtual reality device according to claim 6, characterized in that: The first area (111) is located in the middle area of ​​the first display (11).

8. The optical system (1) for a virtual reality device according to any one of claims 1 to 7, characterized in that: The first display (11) is a 4K TFT LCD; The second display (12) is a 2K Micro OLED.

9. The optical system (1) for a virtual reality device according to any one of claims 1 to 7, characterized in that: Also includes: A housing (14), wherein a viewing window (141) is provided on the housing (14); The optical component (13), the first display (11) and the second display (12) are all arranged in the housing (14); The optical component (13) is arranged corresponding to the viewing window (141), and the image of the second display (12) is reflected by the first display (11) and then projected onto the optical component (13).

10. A virtual reality device (3), characterized in that: include: A conversion module (31), wherein the conversion module (31) is capable of receiving a first signal from a computer device and converting the first signal into a second signal; A plurality of optical systems (1) for virtual reality devices according to any one of claims 1 to 9, each electrically connected to the conversion module (31); The conversion module (31) is capable of sending the second signal to the first display (11) and the second display (12) in each of the optical systems (1) for the virtual reality device.

11. The virtual reality device (3) according to claim 10, characterized in that: The conversion module (31) comprises: A first converter (311) electrically connected to each of the first displays (11), the first converter (311) being used to convert the first signal from the computer device into the second signal, and transmit the second signal to each of the first displays (11); The second converter (312) is electrically connected to each of the second displays (12), and the second converter (312) is used to convert the first signal from the computer device into the second signal and transmit the second signal to each of the second displays (12).

12. The virtual reality device according to claim 11, characterized in that: The first signal includes a video signal received by the DP, and the second signal includes a video signal receivable by the MIPI DSI; The first converter (311) and / or the second converter (312) is a data conversion chip, which is used to convert the data of the first signal from the computer device into the data of the second signal, and transmit it to each of the first displays (11) and / or each of the second displays (12).

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