Virtual reality display device and light supplementing method

Abstract

The invention discloses a virtual reality display device and a light supplementing method, the device comprises a display screen, a light supplementing structure and an appearance plate, and the appearance plate is located on the side, back on to human eyes, of the display screen; the light supplementing structure is arranged on the inner side of the appearance plate, the light supplementing structure and the display screen are in linkage control, and comfortable ambient light is provided for human eyes watching the display screen through light supplementing of the light supplementing structure. According to the invention, the light supplementing brightness of the light supplementing structure is automatically controlled based on the picture brightness of the display screen, so that comfortable ambient light is provided for human eyes watching the display screen, and the problem that the display picture with changed brightness causes discomfort of the human eyes is relieved.

Description

Technical Field

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

[0002] VR glasses use an optical system to project images directly into the human eye, forming an upright and enlarged virtual image, and the virtual image is located several meters away; when using VR glasses, it is equivalent to looking at objects several meters away, which solves the problem of viewing objects at close range to a certain extent. For example, the comparative document CN115561902A discloses a "VR glasses and a control method for VR glasses", in which a lens structure is arranged between the display screen and the human eye, and the processing based on the lens structure can ultimately form an upright and enlarged virtual image in the human eye, thereby achieving the purpose of eye protection.

[0003] However, viewing distance is a major factor in eye protection, and the brightness of the viewing environment is also an important factor in eye protection. When wearing VR glasses, the light entering the eyes is all from the screen. Changes in the screen content will cause a large change in the brightness of the light entering the eyes, which in turn causes eye discomfort. Although the comparative document CN115561902A proposes a solution to set a fill light unit in front of the human eye to illuminate the pupil, the purpose of setting the fill light unit is to assist the position determination device in determining the position and angle of the pupil. It illuminates the human eye with a constant bright light, and cannot avoid the problem of eye discomfort caused by changes in the brightness of the screen content. Summary of the invention

[0004] The purpose of the embodiments of the present invention is to provide a virtual reality display device and a fill light method, which can solve the above-mentioned problems existing in the prior art.

[0005] To achieve the above objectives, this application adopts the following technical solutions:

[0006] On the one hand, a virtual reality display device is provided, comprising a display screen, a fill light structure and an appearance panel, wherein the appearance panel is located on the side of the display screen facing away from human eyes; the fill light structure is arranged on the inner side of the appearance panel, and the fill light structure is linked with the display screen for controlling the fill light of the fill light structure to provide comfortable ambient light for human eyes viewing the display screen.

[0007] Optionally, it further comprises an appearance panel arranged on the side of the display screen facing away from human eyes, and the fill light structure is arranged on the inner side of the appearance panel.

[0008] Optionally, the fill light structure includes a fill light and a diffusion plate, the fill light is connected to a side of the diffusion plate, and the light emitted by the fill light is diffused to a periphery of the display screen through the diffusion plate.

[0009] Optionally, the fill light structure has a blocking area and a fill light area. Based on the viewing direction when worn, the blocking area coincides with an area corresponding to the orthographic projection of the display screen on the appearance panel, and the fill light area is located at the periphery of the blocking area; the fill light is located in the blocking area, and the diffuser extends from the blocking area to the fill light area.

[0010] Optionally, a long hole extending in the transverse direction is opened at the center of the diffusion plate, and the fill light is arranged along the inner wall of the long hole.

[0011] Optionally, the diffusion plate includes a reflective layer, a light guide layer and a diffusion layer, the reflective layer is located on a side of the light guide layer close to the appearance plate, the diffusion layer is located on a side of the light guide layer facing away from the appearance plate, the light guide layer guides the light of the fill light to the reflective layer, and the reflective layer reflects the light to the diffusion layer.

[0012] Optionally, the surface of the light guide layer close to the appearance plate is densely covered with pits for changing the direction of light, so that the reflective layer reflects light to the diffusion layer.

[0013] Optionally, the reflective layer is disposed on the light guide layer or on the appearance plate.

[0014] Optionally, in the direction from the side close to the fill light to the side away from the fill light, the reflective layer gradually tilts toward the side where the display screen is located, so that the light from the fill light can be projected onto the reflective layer.

[0015] Optionally, a folded optical path system is provided on the display side of the display screen, and through processing by the folded optical path system, an enlarged and telescoped virtual image corresponding to the display screen of the display screen is formed in the human eye.

[0016] On the other hand, a fill light method based on the above virtual reality display device is provided, comprising the steps of:

[0017] Calculate the display screen brightness L1 in real time through the display screen;

[0018] Based on the set initial brightness L0, if L0≤5*L1, calculate the fill light brightness L=L0-L1; if L0>5*L1, calculate the fill light brightness L=(L0-L1) / 2;

[0019] The luminous brightness of the fill light structure is controlled to be L.

[0020] The beneficial effects of the present application are as follows: the present invention provides a virtual reality display device and a fill light method, wherein the device has a fill light structure that is controlled in linkage with a display screen, and automatically controls the fill light brightness of the fill light structure based on the picture brightness of the display screen, so as to provide comfortable ambient light for human eyes viewing the display screen, and reduce the problem of human eye discomfort caused by display pictures with changing brightness. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The present application is further described in detail below based on the drawings and embodiments.

[0022] Figure 1 This is a structural principle diagram of the virtual reality display device described in an embodiment of the present application;

[0023] Figure 2 This is a schematic diagram of the area division of the appearance plate described in the embodiment of the present application;

[0024] Figure 3 It is a partial enlarged schematic diagram of the diffusion plate and the appearance plate described in the embodiment of the present application;

[0025] Figure 4 It is a structural schematic diagram of the fill light structure described in the embodiment of the present application.

[0026] In the figure:

[0027] 1. Display screen; 2. Fill light structure; 21. Fill light; 22. Diffuser plate; 221. Light guide layer; 2211. Pit; 222. Diffuser layer; 223. Reflection layer; 23. Shielding area; 24. Fill light area; 3. Appearance panel; 4. Folded optical path system. DETAILED DESCRIPTION

[0028] In order to make the technical problems solved by this application, the technical solutions adopted, and the technical effects achieved more clearly, the technical solutions of the embodiments of this application are further described in detail below. Obviously, the described embodiments are only part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of this application.

[0029] In the description of this application, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0030] In the present application, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0031] When wearing VR glasses, the light entering the eyes is all from the screen. Changes in the screen content will cause a large change in the brightness of the light entering the eyes, which will cause eye discomfort.

[0032] For this reason, Figure 1 As shown, this embodiment provides a virtual reality display device, including a display screen 1 and a fill light structure 2, wherein the fill light structure 2 is linked with the display screen 1 for controlling the fill light of the fill light structure 2 to provide comfortable ambient light for human eyes viewing the display screen 1.

[0033] When wearing the virtual reality display device, the human eye is covered in the shell of the virtual reality display device, and the light from the external environment cannot enter the human eye. Therefore, the superposition of the light emitted by the display screen 1 and the light emitted by the fill light structure 2 determines the brightness of the environment in which the human eye is located. Therefore, in the process of the brightness change of the display screen 1, the brightness of the fill light structure 2 can be adjusted to achieve providing comfortable ambient light for the human eye viewing the display screen 1 at all times.

[0034] It can be understood that in order to realize the linkage control of the fill light structure 2 and the display screen 1, the virtual reality display device of this embodiment has a control board connected to the fill light structure 2 and the display screen 1 at the same time, and the display screen 1 can send its own picture display brightness information to the control board in real time, and the control board controls the luminous brightness of the fill light structure 2 according to the brightness information fed back by the display screen 1. Among them, the control program of the relationship between the adjustment of the fill light brightness of the fill light structure 2 and the change of the display brightness of the display screen 1 can be pre-loaded into the control board, and the control board can calculate and control the luminescence of the fill light structure 2 after executing the control program during operation.

[0035] Specifically, the fill light structure 2 is linked with the display screen 1 for control, which means that the fill light brightness of the fill light structure 2 can be adaptively adjusted according to the display brightness of the display screen 1. Specifically, when the user sets a display brightness, the lighter the display color, the higher the brightness, and the darker the display color, the lower the brightness. For example, the white picture has the highest brightness and the black picture has the lowest brightness. When the display color of the display screen 1 changes, its display brightness also changes accordingly. Therefore, the fill light brightness of the fill light structure 2 also changes and adjusts accordingly to achieve a brightness environment that is comfortable for the eyes.

[0036] In summary, in the virtual reality display device of this embodiment, there is a fill light structure 2 which is linked with the display screen 1. The fill light brightness of the fill light structure 2 can be automatically controlled based on the picture brightness of the display screen 1, so as to provide comfortable ambient light for the human eyes watching the display screen and reduce the problem of human eye discomfort caused by the display picture with changing brightness.

[0037] Furthermore, the virtual reality display device also includes an appearance panel 3 arranged on the side of the display screen 1 facing away from human eyes, and the fill light structure 2 is arranged on the inner side of the appearance panel 3.

[0038] The appearance plate 3 is a part of the shell of the virtual reality display device, which is located on the back side of the display screen 1 and has the characteristic of being opaque. The fill light structure 2 is arranged on the inner side of the appearance plate 3, that is, on the back side of the display screen 1. On the one hand, the fill light structure 2 can completely avoid the problem of blocking the display screen 1; on the other hand, it can provide fill light from the back side of the display screen 1 to avoid affecting the clarity of the display screen, and provide users with better viewing quality while providing fill light.

[0039] Regarding the fill light structure 2 , in one embodiment, the fill light structure 2 includes a fill light 21 and a diffuser plate 22 , the fill light 21 is connected to a side of the diffuser plate 22 , and the light emitted by the fill light 21 is diffused to the periphery of the display screen 1 through the diffuser plate 22 .

[0040] A structure combining a fill light 21 and a diffuser plate 22 is set, and the light emitted by the fill light 21 is diffused by the diffuser plate 22 and then propagated out, which can effectively expand the light emitting area of ​​the entire fill light structure 2. At the same time, the light diffused by the diffuser plate 22 is more dispersed and soft, which can reduce the problem of light directly hitting the human eye and causing eye fatigue.

[0041] Specifically, the diffuser plate 22 is plate-shaped and fixed to the inner side of the appearance plate 3, and the fill light 21 is arranged on the side of the diffuser plate 22. The light emission direction of the fill light 21 is parallel to the appearance plate 3, so the fill light 21 will not face the human eye, and the light needs to be diffused by the diffuser plate 22, so the problem of the light directly hitting the human eye is avoided. In order to make the fill light uniform inside the entire device, the fill light 21 is preferably a strip-shaped light, such as an LED light strip. The fill light 21 can be arranged along the side wall of the diffuser plate 22, so that the incident light in each area of ​​the diffuser plate 22 is uniform, thereby achieving uniform light emission of the entire diffuser plate 22.

[0042] In one embodiment, the fill light structure 2 has a blocking area 23 and a fill light area 24. Based on the viewing direction when worn, the blocking area 23 coincides with an area corresponding to the orthographic projection of the display screen 1 on the appearance panel 3, and the fill light area 24 is located on the periphery of the blocking area 23; the fill light 21 is located in the area corresponding to the blocking area 23, and the diffuser 22 extends from the blocking area 23 to the fill light area 24.

[0043] Specifically, refer to Figure 2 , based on the viewing direction of the human eye when wearing, the area corresponding to the orthographic projection of the display screen 1 on the fill light structure 2 is the shielding area 23, and the area outside the shielding area 23 is the fill light area. In the shielding area 23, the human eye cannot observe the shielding area 23 due to the shielding of the display screen 1 when wearing, so the fill light 21 is set in the shielding area 23, and the fill light 21 can be hidden by the shielding of the display screen 1, and the user will not directly observe the existence of the fill light 21. However, the light emitted by the fill light structure 2 in the shielding area 23 cannot be transmitted to the front side of the human eye, so the diffuser 22 extends outward to the fill light area 24, and the light in the fill light area 24 can pass through the gap between the display screen 1 and the device housing and merge with the light emitted by the display screen 1, thereby achieving the effect of maintaining the brightness for human eyes to watch.

[0044] Regarding the specific layout of the fill light structure 2, in one embodiment, refer to Figure 4 A long hole extending in the horizontal direction is opened in the center of the diffusion plate 22, and a fill light 21 is arranged along the inner wall of the long hole. The light of the fill light 21 is diffused from the inside to the outside, so as to realize uniform light emission of the entire diffusion plate 22, and at the same time, the fill light 21 is hidden in the area corresponding to the shielding area 23.

[0045] Regarding the structure of the diffuser plate 22, in one embodiment, refer to Figure 3The diffuser plate 22 includes a reflective layer 223, a light guide layer 221 and a diffuser layer 222. The reflective layer 223 is located on a side of the light guide layer 221 close to the appearance plate 3, and the diffuser layer 222 is located on a side of the light guide layer 221 facing away from the appearance plate 3. The light guide layer 221 guides the light emitted by the fill light 21 to the reflective layer 223, and the reflective layer 223 reflects the light to the diffuser layer 222.

[0046] The light emission direction of the fill light 21 is perpendicular to the observation direction of the human eye. In order to allow more light to be transmitted to the front side of the human eye through the diffuser 22, the diffuser 22 is configured in this solution to be composed of a reflective layer 223, a light guide layer 221 and a diffuser 222. The light can be transmitted in a straight line in the light guide layer 221. After the light is guided to the reflective layer 223 by the light guide layer 221, the light is reflected to the diffuser 222 by the reflective layer 223, so that more light is projected into the diffuser 222, so that the diffuser 222 can excite the highest brightness. The uniform light of the diffuser 222 is used to make the entire diffuser 22 emit uniform and soft light, thereby achieving the best fill light effect.

[0047] In one embodiment, the surface of the light guide layer 221 close to the appearance plate 3 is densely covered with pits 2211 for changing the direction of light, so that the reflective layer 223 reflects light to the diffusion layer 222 .

[0048] Based on the setting of the pits 2211 on the surface of the light guide layer 221, the emission direction of the light of the light guide layer 221 can be changed, so that more light can be projected onto the reflective layer 223, and then propagate in the direction of the side where the human eye is located through the reflective layer 223, providing more sufficient fill light for the display side of the display screen 1.

[0049] Importantly, in the structure of this solution, the propagation direction of the light reflected by the reflective layer 223 and projected toward the diffusion layer 222 is roughly from the fill light structure 2 to the direction of the human eye, so it can provide a more sufficient amount of fill light for the display side of the display screen 1.

[0050] Specifically, the light-guiding layer 221 of the present embodiment can be made of a highly light-transmitting material such as glass or acrylic. The surface of the light-guiding layer 221 having pits 2211 is equivalent to frosting the surface of the light-guiding layer 221. In terms of microscopic effect, a surface of the light-guiding layer 221 densely covered with pits 2211 is formed.

[0051] In one embodiment, the reflective layer 223 is disposed on the light guide layer 221 or on the appearance plate 3 .

[0052] Specifically, when the reflective layer 223 is disposed on the appearance plate 3, that is, disposed on the inner wall surface of the appearance plate 3, the light is refracted and turned by the light guide layer 221 and then projected onto the reflective layer 223, and part of the light is reflected by the reflective layer 223 and then returned to the light guide layer 221, and then propagated to the diffuser 22 for diffusion. When the reflective layer 223 is disposed on the light guide layer 221, that is, disposed on the surface of the light guide layer 221 with the pits 2211, the surface of the entire reflective layer 223 is uneven due to the presence of the pits 2211, so when the light in the light guide layer 221 is projected onto the surface of the reflective layer 223, it will be reflected from all directions, and part of the light can be propagated to the diffuser 22 for diffusion.

[0053] As can be seen from the above, in this solution, the reflective layer 223 is arranged on the light guide layer 221 or the appearance plate 3, which can realize the effect of redirecting the light to be projected into the diffusion layer 222, so as to provide a more sufficient amount of fill light for the display side of the display screen 1. Optionally, the reflective layer 223 is a reflective coating on the light guide layer 221 or the appearance plate 3.

[0054] In one embodiment, the reflective layer 223 gradually tilts toward the side where the display screen 1 is located, from the side close to the fill light 21 to the side away from the fill light 21 , so that the light from the fill light 21 can be projected onto the reflective layer 223 .

[0055] Combination Figure 1 By understanding the propagation path of light in the structure shown, the inclined reflective layer 223 can ensure that the light emitted by the fill light 21 can be projected onto the reflective layer 223 after being propagated through the light guide layer 221, thereby avoiding the problem of light waste caused by the light being directly projected onto the periphery of the diffuser 22.

[0056] Specifically, the reflective layer 223 is arranged on the light guide layer 221 or the appearance plate 3, so the light guide layer 221 and the appearance plate 3 can be arranged into an arc-shaped plate, and the arc-shaped surface of the light guide layer 221 or the appearance plate 3 can be used to realize the inclined setting of the reflective layer 223, so that all the light can be projected onto the reflective layer 223.

[0057] In one embodiment, a folded optical path system 4 is provided on the display side of the display screen 1 , and through the processing of the folded optical path system 4 , an enlarged and telescoped virtual image corresponding to the display screen of the display screen 1 is formed in the human eye.

[0058] The setting of the folded optical path system 4 can extend the viewing distance of the human eye, thereby achieving the purpose of preventing myopia. It should be noted that the VR glasses in the prior art already have a structure that can magnify and extend the image of the display screen, which is the folded optical path system 4 referred to in this application, and those skilled in the art can directly combine and apply it.

[0059] On the other hand, a fill light method based on the above virtual reality display device is provided, comprising the steps of:

[0060] The brightness L1 of display screen 1 is calculated in real time by displaying the screen. The maximum value of L1 is L max ;

[0061] Based on the set initial brightness L0, if L0≤5*L1, the fill light brightness L=L0-L1 is calculated; if L0>5*L1, the fill light brightness L=(L0-L1) / 2 is calculated.

[0062] The luminous brightness of the fill light structure 2 is controlled to be L.

[0063] Among them, when L0≤5*L1, it indicates that the real-time brightness of the display screen is relatively large. At this time, the fill light is directly set to L=L0-L1, so that the total brightness of the environment where the human eye is located is the initial brightness L0; when L0>5*L1, it indicates that the real-time brightness of the display screen is relatively small. At this time, the fill light brightness is set to L=(L0-L1) / 2, which increases the ambient brightness of the human eye to a certain extent, so as to improve the comfort of the human eye, and avoid the problem that the fill light brightness L is too large and prevents the human eye from seeing the content of the display screen clearly.

[0064] The screen brightness L1 of the display screen 1 can be calculated by the display screen 1 itself, without the need for an external photosensitive element for monitoring. Specifically, the number of pixels of the display screen is N, and in the display screen 1, the corresponding brightness when the grayscale of the display sub-pixel R\G\B is 255 is L R \L G \L B , the grayscale of the displayed image is counted, and the brightness of the display is calculated as follows:

[0065]

[0066] in Respectively represent the number of R, G, and B pixels with grayscale k.

[0067] The initial brightness L0 can be a fixed value or a variable value. Specifically:

[0068] When the initial brightness L0 is a fixed value, the currently set display brightness is used as a reference, and the excitation brightness when the display screen displays the brightest white picture is set to L0. During the playback process, fill light is always performed based on L0.

[0069] When the initial brightness L0 is a variable value, the display screen brightness is continuously monitored during playback. If the screen brightness of the current frame is greater than the screen brightness of any previous frame, the current screen brightness is used as L0; if the screen brightness of the current frame is not greater than the screen brightness of all previous frames, the original initial brightness L0 is maintained unchanged. In this way, the reference benchmark of the fill light brightness can be adjusted step by step according to the brightness change of the display screen, and the highest brightness white will not be directly used as the reference benchmark, so as to avoid excessive fill light brightness and reduce the impact of fill light on viewing effect.

[0070] The control of the luminous brightness of the fill light structure 2 can be achieved by adjusting the current of the fill light structure 2 .

[0071] In the description of this article, it should be understood that the terms "upper", "lower", "left", "right", etc., and other directions or positional relationships are only for the convenience of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation of this application. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0072] In the description of this specification, the description with reference to the terms "an embodiment", "example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example.

[0073] In addition, it should be understood that although this specification is described according to implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

[0074] The technical principles of the present application are described above in conjunction with specific embodiments. These descriptions are only for explaining the principles of the present application and cannot be interpreted as limiting the scope of protection of the present application in any way. Based on the explanations herein, those skilled in the art can think of other specific implementation methods of the present application without creative work, and these methods will fall within the scope of protection of the present application.

Claims

1. A virtual reality display device, It is characterized in that The invention comprises a display screen (1), a fill light structure (2) and an appearance panel (3), wherein the appearance panel (3) is located on the side of the display screen (1) facing away from human eyes; the fill light structure (2) is arranged on the inner side of the appearance panel (3), and the fill light structure (2) is controlled in linkage with the display screen (1), so that the fill light of the fill light structure (2) provides comfortable ambient light for human eyes viewing the display screen (1).

2. The virtual reality display device according to claim 1, It is characterized in that The fill light structure (2) comprises a fill light (21) and a diffusion plate (22); the fill light (21) is connected to the side of the diffusion plate (22), and the light emitted by the fill light (21) is diffused to the periphery of the display screen (1) through the diffusion plate (22).

3. The virtual reality display device according to claim 2, It is characterized in that The fill-light structure (2) comprises a blocking area (23) and a fill-light area (24); based on the viewing direction when worn, the blocking area (23) coincides with an area corresponding to the orthographic projection of the display screen (1) on the appearance plate (3); the fill-light area (24) is located at the periphery of the blocking area (23); the fill-light lamp (21) is located in the blocking area (23), and the diffuser (22) extends from the blocking area (23) to the fill-light area (24).

4. The virtual reality display device according to claim 3, It is characterized in that A long hole extending in the transverse direction is provided at the center of the diffusion plate (22), and the fill light (21) is arranged along the inner wall of the long hole.

5. The virtual reality display device according to claim 2, It is characterized in that The diffusion plate (22) comprises a reflection layer (223), a light guide layer (221) and a diffusion layer (222); the reflection layer (223) is located on a side of the light guide layer (221) close to the appearance plate (3); the diffusion layer (222) is located on a side of the light guide layer (221) facing away from the appearance plate (3); the light guide layer (221) guides the light emitted by the fill light (21) to the reflection layer (223); and the reflection layer (223) reflects the light to the diffusion layer (222).

6. The virtual reality display device according to claim 5, It is characterized in that The surface of the light guide layer (221) close to the appearance plate (3) is densely covered with pits (2211) for changing the direction of light, so that the reflection layer (223) can reflect light to the diffusion layer (222).

7. The virtual reality display device according to claim 6, It is characterized in that The reflective layer (223) is arranged on the light guide layer (221) or on the appearance plate (3).

8. The virtual reality display device according to claim 5, It is characterized in that In the direction of the reflective layer (223) pointing from the side close to the fill light (21) to the side away from the fill light (21), the reflective layer (223) gradually tilts toward the side where the display screen (1) is located, so that the light emitted by the fill light (21) can be projected onto the reflective layer (223).

9. The virtual reality display device according to claim 1, It is characterized in that A folded optical path system (4) is provided on the display side of the display screen (1), and through the processing of the folded optical path system (4), an enlarged and telescoped virtual image corresponding to the display screen of the display screen (1) is formed in the human eye.

10. A fill light method for a virtual reality display device according to any one of claims 1 to 9, It is characterized in that Includes steps: Calculate the display screen brightness L1 in real time through the display screen; Based on the set initial brightness L0, if L0≤5*L1, calculate the fill light brightness L=L0-L1; if L0>5*L1, calculate the fill light brightness L=(L0-L1) / 2; The luminous brightness of the fill light structure is controlled to be L.

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