Optical assembly and virtual reality equipment

Abstract

The embodiment of the invention provides an optical assembly and virtual reality equipment. The optical assembly comprises a directional light source assembly, a display panel and an imaging lens group, the display panel is located on the light emitting side of the directional light source assembly, and the imaging lens group is located on the light emitting side of the display panel; the directional light source assembly has a first state and a second state, in the first state, the directional light source assembly emits first light containing face image information of a wearer, and the first light is transmitted to one eye of an external observer through the display panel and the imaging lens group; and in the second state, the directional light source assembly emits second light containing face image information of the wearer, and the second light is transmitted to the other eye of the external observer through the display panel and the imaging lens group.

Description

Technical Field

[0001] This application relates to the field of display technology, and more specifically, to an optical component and a virtual reality device. Background Technology

[0002] In recent years, virtual reality (VR) has developed rapidly, and its application areas have become increasingly widespread. To better enhance the user experience, VR functions have become more diversified. For example, to improve users' interaction with the external environment, some VR products have added a video see-through function, which captures images of the external environment through a camera and displays them on the screen of the virtual reality optical system, allowing users to see the external environment.

[0003] However, users outside the VR headset cannot see the wearer's obscured eyes and facial expressions, resulting in an asymmetrical interaction. Even though some VR products now incorporate outward-facing capabilities, allowing the wearer's eye state to be seen, the current effect is poor, with insufficient brightness and resolution to meet the demands.

[0004] In view of this, a new technical solution is needed to solve the above-mentioned technical problems. Summary of the Invention

[0005] The purpose of this application is to provide a new technology solution for optical components and virtual reality devices.

[0006] In a first aspect, embodiments of this application provide an optical component. The optical component includes: a pointing light source component, a display panel, and an imaging lens group;

[0007] The display panel is located on the light-emitting side of the pointing light source assembly, and the imaging lens group is located on the light-emitting side of the display panel;

[0008] The pointing light source assembly has a first state and a second state. In the first state, the pointing light source assembly emits a first light ray containing facial image information of the wearer. The first light ray is transmitted to one eye of an external observer through the display panel and the imaging lens group.

[0009] In the second state, the pointing light source assembly emits a second light ray containing facial image information of the wearer, and the second light ray is transmitted through the display panel and the imaging lens group to the other eye of an external observer.

[0010] Optionally, the display panel is located within one focal length of the imaging lens group.

[0011] Optionally, the pointing light source assembly includes a light source module and a modulation optical path module;

[0012] The light source module includes a first light source group and a second light source group arranged at intervals. The first light source group and the second light source group are alternately turned on and off so that the pointing light source component is in the first state and the second state.

[0013] The modulation optical path module is used to modulate the transmission direction of the light output from the light source module, so that the first light and the second light are transmitted to different eyes of an external observer.

[0014] Optionally, the modulation optical path module includes an array of converging lenses, the convex surface of which faces the light source module.

[0015] Optionally, the light source module further includes a light guide, and the first light source group and the second light source group are spaced apart along the length or width direction of the light guide.

[0016] Optionally, the light guide portion includes a substrate and protrusions disposed on the substrate, the protrusions being arranged in an array on the substrate.

[0017] Optionally, the protrusion has a first surface and a second surface disposed opposite to each other, the first surface being provided with a first functional film and the second surface being provided with a second functional film;

[0018] The first functional film is used to transmit the first light and reflect the second light, and the second functional film is used to transmit the second light and reflect the first light.

[0019] Optionally, the structure of the protrusion includes any one of rectangular, conical, or arc-shaped.

[0020] Optionally, both the first functional film and the second functional film can be circularly polarized films or linearly polarized films.

[0021] Optionally, the modulation optical path module includes an array of converging lenses, the convex surface of which faces the light source module, wherein the protrusions correspond one-to-one with the converging lenses.

[0022] Optionally, the light source module includes multiple light sources arranged in an array, or the light source module includes at least one light source and a light guide strip for guiding light transmission.

[0023] Optionally, the frequency at which the pointing light source component switches between the first state and the second state is greater than 60Hz.

[0024] Optionally, there is an angle between the principal ray of the first ray and the principal ray of the second ray, and the angle is related to the interpupillary distance of the external observer.

[0025] Optionally, the optical component further includes an ambient light sensor, which is electrically connected to the directional light source component.

[0026] Secondly, embodiments of this application provide a virtual reality device. The virtual reality device includes the optical components described in the first aspect;

[0027] The virtual reality device also includes a facial tracking system, which is used to capture facial image information of the wearer;

[0028] The optical components are used to display facial image information of the wearer and transmit it to an external observer.

[0029] Optionally, the virtual reality device includes a display for showing images of a virtual world to the wearer, with the optical components located on the back side of the display.

[0030] According to embodiments of this application, the optical component provides a novel and highly interactive way of presenting facial images for virtual reality devices. Without affecting the wearer's immersion, external observers can clearly observe the wearer's facial image, achieving symmetrical interaction and enhancing the experience.

[0031] Other features and advantages of this specification will become clear from the following detailed description of exemplary embodiments with reference to the accompanying drawings. Attached Figure Description

[0032] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments of this specification and, together with their description, serve to explain the principles of this specification.

[0033] Figure 1 The image shows the state of the optical component provided in the embodiment of this application. Figure 1 .

[0034] Figure 2 The image shows the state of the optical component provided in the embodiment of this application. Figure 2 .

[0035] Figure 3 The diagram shows the structure of the light guide provided in an embodiment of this application. Figure 1 .

[0036] Figure 4 The diagram shows the structure of the light guide provided in an embodiment of this application. Figure 2 .

[0037] Figure 5The diagram shows the structure of the light source module and light guide provided in an embodiment of this application. Figure 1 .

[0038] Figure 6 The diagram shows the structure of the light source module and light guide provided in an embodiment of this application. Figure 2 .

[0039] Explanation of reference numerals in the attached figures:

[0040] 1. Pointing light display screen; 10. Pointing light source assembly; 11. Display panel;

[0041] 101. Light source module; 1011. First light source group; 1012. Second light source group; 102. Modulation optical path module; 1021. Converging lens;

[0042] 1013, Light guide; 1014, Substrate; 1015, Protrusion; 1016, First surface; 1017, Second surface;

[0043] 2. Imaging lens group;

[0044] L1, first ray; L2, second ray. Detailed Implementation

[0045] Various exemplary embodiments of the present application will now be described in detail with reference to the accompanying drawings. It should be noted that, unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps set forth in these embodiments do not limit the scope of the present application.

[0046] The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the scope of this application and its application or use.

[0047] Technologies and equipment known to those skilled in the art may not be discussed in detail, but where appropriate, such technologies and equipment should be considered part of the specification.

[0048] In all the examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values.

[0049] It should be noted that similar labels and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be discussed further in subsequent figures.

[0050] This application provides an optical component designed specifically for virtual reality devices. The optical component is mainly used to display the wearer's facial image information, so that the wearer's facial image information (including eye and face image information) can be clearly seen by an external observer, realizing symmetrical interaction between the external observer and the wearer.

[0051] Reference Figure 1 and Figure 2 The optical components include a pointing light source assembly 10, a display panel 11, and an imaging lens group 2. The display panel 11 is located on the light-emitting side of the pointing light source assembly 10, and the imaging lens group 2 is located on the light-emitting side of the display panel 11.

[0052] The pointing light source assembly 10 has a first state and a second state. In the first state, the pointing light source assembly 10 emits a first light L1 containing the wearer's facial image information. The first light L1 is transmitted through the display panel 11 and the imaging lens group 2 to one eye of an external observer.

[0053] In the second state, the pointing light source assembly 10 emits a second light L2 containing facial image information of the wearer, and the second light L2 is transmitted through the display panel 11 and the imaging lens group 2 to the other eye of an external observer.

[0054] In this embodiment, the optical component includes a directional light source component 10, a display panel 11, and an imaging lens group 2 that work together. When applied to a virtual reality device, the optical component enables the VR device to have a see-through function, that is, the wearer's facial image information (including eye and face image information) can be seen by an external observer. In addition, when applied to a virtual reality display, the optical component can also improve the image quality of the wearer's facial image information seen by an external observer, such as making the image more realistic and improving the symmetrical interactive experience.

[0055] The following is a detailed introduction to each optical component in the optical assembly.

[0056] Reference Figure 1 and Figure 2 The optical component includes a directional light source component 10, which serves as the core light source part of the optical component and is responsible for directionally emitting light containing the wearer's facial image information. For example, in a virtual reality device, after a camera with facial tracking function captures the wearer's facial image, the directional light source component 10 can directionally emit light containing the wearer's facial image information under illumination conditions.

[0057] In this embodiment, the directional light source component 10 employs directional light source technology to achieve the purpose of directional light emission. This technology maintains the high resolution and brightness of the image without sacrificing clarity or brightness. By applying the directional light source component 10 to the optical components, it allows external observers to view the facial image information of the VR wearer without compromising brightness and resolution, resulting in a more realistic display and enabling symmetrical interaction.

[0058] Specifically, the directional light source assembly 10 has two operating modes: a first state and a second state. In the first state, the emitted first light ray L1 contains specific facial image information; in the second state, the emitted second light ray L2 also contains specific facial image information. For example, the directional light source assembly 10 utilizes a directional guiding light source to guide light to the left eye of an external observer in the first time frame, displaying a left-eye image; in the second time frame, the light is guided to the right eye of the external observer, displaying a right-eye image. This allows the external observer to more clearly and precisely observe the wearer's face and eyes. Conversely, the opposite can also be achieved, for example, displaying a right-eye image in the first time frame and a left-eye image in the second time frame.

[0059] Please continue to refer to Figure 1 and Figure 2 The optical components also include a display panel 11, which is located on the light-emitting side of the pointing light source assembly 10, meaning that the light emitted by the light source first passes through the display panel 11. The display panel 11 can further process the light, such as adjusting the color, brightness, or contrast of the light, and can even display specific images or patterns through pixel-level control. In this way, when the light emitted by the pointing light source assembly 10 passes through the display panel 11, the facial image information it carries can be further optimized or modified.

[0060] It should be noted that the directional light source assembly 10 and the display panel 11 work together to form the basic structure of the directional light source display screen 1. The directional light source display screen 1 relies on the directional light source and the display panel 11, which can change direction, to transmit the image to the eyes of the external observer in an alternating pattern of odd and even frames.

[0061] For example, the display panel 11 can be an LCD display panel 11, and the directional light source display screen 1 is a linear light source LCD display screen.

[0062] Please continue to refer to Figure 1 and Figure 2The optical components also include an imaging lens group 2, located on the light-emitting side of the display panel 11. The main function of the imaging lens group 2 is to focus and shape the light, ensuring that the light is transmitted to the observer's eyes along a predetermined path and direction. The imaging lens group 2 allows for precise control and adjustment of the light, thereby forming a clear and realistic image in the observer's eyes. In other words, in addition to the directional light source display screen 1 formed by the directional light source component 10 and the display panel 11, the optical components, combined with the imaging lens, present the VR wearer's facial image information displayed on the screen at a position closer to the actual VR wearer's face, preventing the image from appearing above the face and improving the interactive experience.

[0063] For example, the imaging lens group 2 includes a Fresnel lens. Fresnel lenses can reduce the overall thickness of the optical components.

[0064] Therefore, in this embodiment, the optical component provides a novel and highly interactive way of presenting facial images for virtual reality devices. Without affecting the wearer's immersion, external observers can clearly observe the wearer's facial image, achieving symmetrical interaction and enhancing the experience.

[0065] In one embodiment, refer to Figure 1 and Figure 2 The display panel 11 is located within one focal length of the imaging lens group 2.

[0066] In this embodiment, the focal length of the imaging lens group 2 is the distance from the center of the lens of the imaging lens group 2 to its focal point (the point where light converges after passing through the imaging lens group 2).

[0067] When the display panel 11 is placed within one focal length of the imaging lens group 2, according to the lens imaging principle, the imaging lens group 2 will form a magnified, upright virtual image on the same side of the lens. Furthermore, the specific position of the display panel 11 can be set according to actual magnification requirements, making the position of the perceived image appear closer to the wearer's eye position.

[0068] For example, refer to Figure 1 and Figure 2 The virtual image position shown is the location of the virtual image of the wearer's face as seen by an external observer, where the virtual image corresponding to the wearer's face image is a magnified and upright virtual image.

[0069] In one embodiment, refer to Figure 1 and Figure 2 ,as well as Figure 5 and Figure 6 The pointing light source assembly 10 includes a light source module 101 and a modulation optical path module 102;

[0070] The light source module 101 includes a first light source group 1011 and a second light source group 1012 arranged at intervals. The first light source group 1011 and the second light source group 1012 are alternately turned on and off so that the directional light source component 10 is in the first state and the second state.

[0071] The modulation optical path module 102 is used to modulate the transmission direction of the light output from the light source module 101, so that the first light L1 and the second light L2 are transmitted to different eyes of an external observer.

[0072] In this embodiment, the light source module 101 consists of two spaced-apart light source groups, namely the first light source group 1011 and the second light source group 1012. These two light source groups may contain the same or different types of light sources, such as LEDs, lasers, etc., depending on the application requirements.

[0073] For example, the first light source group 1011 and the second light source group 1012 employ two sets of LED light sources at different angles, located on the left and right sides of the LCD display screen, respectively. In this case, refer to Figure 1 and Figure 2 When the LED light source located on the left (the first light source group 1011 at the bottom of the figure) is turned on, the light emitted from the light source display screen 1 is transmitted to the left eye of the external observer through the imaging lens group 2. When the LED light source located on the right (the second light source group 1012 at the top of the figure) is turned on, the light emitted from the light source display screen 1 is transmitted to the right eye of the external observer through the imaging lens group 2.

[0074] Specifically, the light source module 101 is designed to alternately turn on and off to create different lighting conditions or display states. The light source module 101 alternately turns on and off: through precise timing control of the circuitry, the first light source group 1011 and the second light source group 1012 can alternately turn on and off. This alternating operating mode allows the directional light source assembly 10 to exhibit different optical characteristics within different time windows, alternatingly transmitting them to the eyes of an external observer.

[0075] As the first light source group 1011 and the second light source group 1012 operate alternately, the pointing light source assembly 10 will be in two different states (the first state and the second state). These two states can represent different illumination brightness, color, polarization state, or any other optical properties that can be changed by switching the light source.

[0076] The directional light source assembly 10 also includes a modulation optical path module 102. The main function of the modulation optical path module 102 is to modulate the direction of the light emitted from the light source module 101. This means that it can control the propagation path of the light, ensuring that the first light ray L1 and the second light ray L2 can be transmitted to different eyes of an external observer in a predetermined direction. For example, the modulation optical path module 102 can ensure that when the first light source group 1011 is turned on, the first light ray L1 emitted by it is mainly guided to the observer's left eye; while when the second light source group 1012 is turned on, the second light ray L2 emitted by it is mainly guided to the observer's right eye, and vice versa.

[0077] In this embodiment, by combining the light source module 101 and the modulation optical path module 102, the pointing light source assembly 10 can be applied to various scenarios that require precise control of the direction of light and changes in the state of the light source. Specifically, when the pointing light source assembly 10 is applied in a VR device, in conjunction with an imaging lens, it can display the wearer's facial image information to an external observer.

[0078] In one embodiment, refer to Figure 1 and Figure 2 The modulation optical path module 102 includes an array of converging lenses 1021, the convex surface of which faces the light source module 101.

[0079] In this embodiment, the type of modulation optical path module 102 includes converging lenses 1021, that is, the converging lenses 1021 are arranged in an array to form the modulation optical path module 102. This arrangement can ensure that the light emitted by the light source module 101 is evenly and efficiently distributed to each lens, thereby achieving a wider and more uniform illumination coverage.

[0080] In addition, the convex surface of the converging lens 1021 faces the light source module 101 directly. The convex lens has a converging effect on light. In this embodiment, the convex surface faces the light source module 101, which means that the light emitted by the light source will be effectively converged when it passes through the lens, thereby enhancing the directionality and intensity of the light.

[0081] For example, refer to Figure 1 and Figure 2 When the first light source group 1011 on the left is turned on, the light emitted from the first light source group 1011 is converged and transmitted to the display panel 11 through the converging lens 1021, and then transmitted to the left eye of the external observer through the imaging lens group 2; when the second light source group 1012 on the right is turned on, the light emitted from the second light source group 1012 is converged and transmitted to the display panel 11 through the converging lens 1021, and then transmitted to the right eye of the external observer through the imaging lens group 2.

[0082] It should be noted that the modulation optical path module 102 includes, but is not limited to, the converging lens 1021 defined above. For example, it can also be a prism, other types of deflection mirrors or gratings, as long as it can change the transmission direction of light to a certain extent so as to transmit the first light ray L1 and the second light ray L2 to the left eye or right eye of the external observer respectively.

[0083] In one embodiment, refer to Figure 1 and Figure 2 ,as well as Figure 5 and Figure 6 The light source module 101 further includes a light guide 1013, and the first light source group 1011 and the second light source group 1012 are spaced apart along the length or width direction of the light guide 1013.

[0084] In this embodiment, the light source module 101 also includes a light guide 1013. The light guide 1013 serves as a light transmission channel and can effectively guide the light emitted by the light source to the area that needs to be illuminated, thereby improving the uniformity of the first light L1 and the second light L2 emitted.

[0085] Specifically, the first light source group 1011 and the second light source group 1012 may be spaced apart along the length direction of the light guide portion 1013, or the first light source group 1011 and the second light source group 1012 may be spaced apart along the width direction of the light guide portion 1013, so as to provide two sets of light sources at different angles to meet the requirements of the directional light source display screen 1.

[0086] It should be noted that, regardless of which direction the first light source group 1011 and the second light source group 1012 are spaced apart along the light guide section 1013, as long as they are combined with the modulation light path module 102, the display panel 11 and the imaging lens group 2, it is possible to transmit the first light L1 to one eye of the external observer and the second light L2 to the other eye of the external observer.

[0087] For example, refer to Figure 1 and Figure 2 The first light source group 1011 and the second light source group 1012 are spaced apart along the width direction of the light guide portion 1013, and the first light source group 1011 is located on the lower side of the light guide portion 1013 to correspond to the left eye of the external observer, and the second light source group 1012 is located on the upper side of the light guide portion 1013 to correspond to the right eye of the external observer.

[0088] For example, the light guide portion 1013 can be a light guide plate.

[0089] In one embodiment, refer to Figure 3 and Figure 4The light guide portion 1013 includes a substrate 1014 and protrusions 1015 disposed on the substrate 1014, the protrusions 1015 being arranged in an array on the substrate 1014.

[0090] In this embodiment, the structure of the light guide 1013 is improved by using techniques such as photolithography to form an array of protrusions 1015 on the substrate 1014 of the light guide 1013. The design of the protrusions 1015 increases the chance of light escaping from the light guide 1013, thus improving light extraction efficiency. Traditional planar light guides suffer from total internal reflection, causing some light to be trapped inside the light guide and unable to be effectively utilized. The presence of the protrusions 1015 breaks this total internal reflection condition, allowing more light to escape in the designed direction, thereby improving light transmission efficiency.

[0091] For example, by adjusting the shape, size, height, and array arrangement of the protrusions 1015, precise control of the light propagation path can be achieved, thereby enhancing the directionality of the light.

[0092] In one embodiment, refer to Figure 3 and Figure 4 The protrusion 1015 has a first surface 1016 and a second surface 1017 disposed opposite to each other. The first surface 1016 is provided with a first functional film, and the second surface 1017 is provided with a second functional film. The first functional film is used to transmit the first light L1 and reflect the second light L2, and the second functional film is used to transmit the second light L2 and reflect the first light L1.

[0093] In this embodiment, the first functional film and the second functional film are applied to two opposite surfaces of the protrusion 1015 (i.e., the first surface 1016 and the second surface 1017). This design enables the protrusion 1015 to selectively transmit and reflect light according to the characteristics of different light rays, thereby achieving directional light output.

[0094] For example, refer to Figure 3 A second functional film is provided on the first surface 1016 of the protrusion 1015. The second functional film reflects the first light L1. The first light L1 reflected by the second functional film is modulated by the modulation optical path module 102 and transmitted to the display panel 11, and then transmitted to the left eye of the observer through the imaging lens group 2.

[0095] It should be noted that, in order to allow the light emitted from the first light source group 1011 to be guided into the light guide section 1013, a functional film is provided on the surface of the light guide section 1013 closest to the first light source group 1011 to transmit the light emitted from the first light source group 1011.

[0096] Reference Figure 4A first functional film is provided on the second surface 1017 of the protrusion 1015. The first functional film reflects the second light L2. The second light L2 reflected by the first functional film is modulated by the modulation optical path module 102 and transmitted to the display panel 11, and then transmitted to the right eye of the observer through the imaging lens group 2.

[0097] It should be noted that, in order to allow the light emitted from the second light source group 1012 to be guided into the light guide section 1013, a functional film is provided on the surface of the light guide section 1013 closest to the second light source group 1012 for transmitting the light emitted from the second light source group 1012.

[0098] Specifically, the first functional membrane is designed to transmit a first ray L1 and reflect a second ray L2. This means that when the first ray L1 shines on the first functional membrane, it is allowed to pass through and continue to propagate, while the second ray L2 is reflected to achieve subsequent transmission. The first functional membrane is disposed on the first surface 1016 of the protrusion 1015. By utilizing the characteristics of the first functional membrane and the structural characteristics of the first surface 1016, the second ray L2 can be directionally transmitted.

[0099] Conversely, the second functional membrane has the opposite function to the first functional membrane: the second functional membrane transmits the second light ray L2 and reflects the first light ray L1. This means that the second light ray L2 can pass smoothly through the second functional membrane, while the first light ray L1 will be reflected for subsequent transmission. The second functional membrane is disposed on the second surface 1017 of the protrusion 1015. By utilizing the characteristics of the second functional membrane and the structural characteristics of the second surface 1017, the first light ray L1 can be directionally transmitted.

[0100] It should be noted that, in order to ensure that the first light ray L1 and the second light ray L2 emitted from the light guide 1013 are as uniform as possible, the reflection ratio of the functional films (including the first functional film and the second functional film) provided on the protrusion 1015 can be reasonably allocated.

[0101] For example, since a plurality of protrusions 1015 are provided on the substrate 1014, and each protrusion 1015 is provided with a functional film, light is reflected each time it passes through a functional film. Assuming that the energy ratio of the light reflected by the functional film is η, and the number of reflections is n, for example, when light is transmitted on the light guide 1013, the reflection ratio of the functional film used for the first reflection of light is η1, the reflection ratio of the functional film used for the second reflection of light is η2, the reflection ratio of the functional film used for the third reflection of light is η3, and so on, and the reflection ratio of the functional film used for the nth reflection of light is ηn, then the energy of each reflection can be expressed by the following expression, where r is the reflectivity of each reflection, that is, the reflectivity of each functional film to light. For example, the reflectivity of the functional film used for the first reflection of light is r1, the reflectivity of the functional film used for the second reflection of light is r2, the reflectivity of the functional film used for the third reflection of light is r3, and so on, and the reflectivity of the functional film used for the nth reflection of light is rn.

[0102] η1 = r1;

[0103] η2 = r2 × (1 - r1);

[0104] η3 = r3 × (1 - r2) × (1 - r1); ......

[0106] etan=rn×......(1-r3)×(1-r2)×(1-r1);

[0107] Ideally, all reflected energy must be equal to ensure the uniformity of the emitted light. Based on the above relationship, the reflection ratio of each functional film can be specifically calculated.

[0108] In one embodiment, refer to Figure 3 and Figure 4 The structure of the protrusion 1015 includes any one of rectangular, conical, or arc shapes.

[0109] In this embodiment, the structural design of the protrusion 1015 exhibits diversity, including any one of rectangular, conical, or arc shapes. This design flexibility not only enriches the appearance of the light guide 1013, but more importantly, it allows for the selection of the most suitable shape according to different application requirements and optical performance requirements.

[0110] Preferably, the protrusion 1015 can be conical, wherein the first surface 1016 and the second surface 1017, which are arranged opposite to each other, have an inclination. For example, the second surface 1017 of the cone is inclined upward relative to the horizontal surface. The second surface 1017 is provided with a second functional film, which reflects the first light L1. Combined with the inclination angle of the second surface 1017, it is more conducive to the directional emission of the first light L1. The first surface 1016 of the cone is inclined downward relative to the horizontal surface. The first surface 1016 is provided with a first functional film, which reflects the second light L2. Combined with the inclination angle of the first surface 1016, it is more conducive to the directional emission of the second light L2.

[0111] In other words, in this embodiment, the alternating on and off design of the first light source group 1011 and the second light source group 1012, combined with the structural configuration of the protrusion 1015 on the guide portion (including the shape and functional film configuration), can achieve directional transmission of light to a certain extent. Furthermore, by further combining the directional modulation of the modulation optical path module 102, the first light beam L1 and the second light beam L2 can be transmitted to the left or right eye of the observer.

[0112] In one embodiment, both the first functional film and the second functional film can be circularly polarized films or linearly polarized films.

[0113] In this embodiment, the type of functional film is defined such that the first functional film transmits the first light ray L1 and reflects the second light ray L2, and the second functional film transmits the second light ray L2 and reflects the first light ray L1.

[0114] For example, the first functional film can be a left-handed circularly polarized film, and the second functional film can be a right-handed circularly polarized film. Alternatively, the first functional film can be a first linearly polarized film, and the second functional film can be a second linearly polarized film, with the reflection axes of the first and second linearly polarized films perpendicular to each other.

[0115] In one embodiment, refer to Figures 1-4 The modulation optical path module 102 includes an array of converging lenses 1021, the convex surface of which faces the light source module 101, wherein the protrusions 1015 correspond one-to-one with the converging lenses 1021.

[0116] In this embodiment, the modulation optical path module 102 includes a plurality of converging lenses 1021 arranged in an array. A plurality of protrusions 1015 are disposed on the base 1014 of the light guide portion 1013. The positions of the protrusions 1015 correspond one-to-one with the converging lenses 1021 to further improve the directionality of light during transmission. Furthermore, the guide portion is configured to include the protrusions 1015 according to the display area. This guide portion structure, combined with the converging lenses 1021, can further improve the display effect of the directional light source display screen 1.

[0117] In one embodiment, refer to Figure 5 and Figure 6 The light source module 101 includes multiple light sources arranged in an array, or the light source module 101 includes at least one light source and a light guide strip for guiding the transmission of light.

[0118] Reference Figure 5 The diagram illustrates a specific embodiment of the light source module 101. Specifically, the light source module 101 includes multiple light sources arranged in an array. That is, the first light source group 1011 includes multiple light sources arranged in an array, and the second light source group 1012 includes multiple light sources arranged in an array. Optionally, the light sources can be LED light sources or laser light sources, etc.

[0119] Reference Figure 6 The diagram illustrates another specific embodiment of the light source module 101. Specifically, the light source module 101 includes a light source and a light guide strip located between the light guide portion 1013 and the light source. That is, the first light source group 1011 includes a first light source and a first light guide strip, with the first light guide strip located between the first light source and the light guide portion 1013. The second light source group 1012 includes a second light source and a second light guide strip, with the second light guide strip located between the second light source and the light guide portion 1013. Optionally, the first light source and the second light source can be LED light sources or laser light sources, etc.

[0120] In one embodiment, the frequency at which the pointing light source component 10 switches between the first state and the second state is greater than 60 Hz.

[0121] In this embodiment, the on and off frequencies of the first light source group 1011 and the second light source group 1012 in the directional light source assembly 10 are limited to avoid being perceived by the human eye of an external observer, reduce the feeling of flickering, and improve dynamic response capability.

[0122] In one embodiment, refer to Figure 1 and Figure 2 There is an angle between the principal ray of the first ray L1 and the principal ray of the second ray L2, and the angle is related to the interpupillary distance of the external observer.

[0123] In this embodiment, the angle between the principal ray of the first ray L1 and the principal ray of the second optics is related to the interpupillary distance of the observer, ensuring a comfortable viewing experience. For example, an excessively large angle may require excessive accommodation of both eyes to fuse the image, while an excessively small angle may not generate sufficient parallax to perceive depth. Therefore, correlating the angle with the interpupillary distance of the observer ensures a comfortable viewing experience.

[0124] For example, the angle between the principal rays of the first ray L1 and the second ray L2 can be adjusted by adjusting the focal length, diameter, and array arrangement of the converging lens 1021. Alternatively, the angle between the principal rays of the first ray L1 and the second ray L2 can be adjusted by adjusting the spacing between the light guide 1013 and the modulation optical path module 102.

[0125] In one embodiment, the optical component further includes an ambient light sensor electrically connected to the directional light source component 10.

[0126] In this embodiment, the optical components also include an ambient light sensor, which is used to sense the ambient light intensity where the observer is located, monitor the ambient light intensity in real time, and adjust the brightness of the light source display screen 1 to improve the contrast between the display brightness and the ambient light, thereby enhancing the interactive experience.

[0127] Specifically, when the ambient light intensity is higher than a certain threshold, the light source current of the directional light source display screen 1, which is composed of the directional light source component 10 and the display panel 11, is increased to ensure higher output brightness, so that external observers can clearly see the face image of the VR wearer even under high ambient light conditions; when the ambient light intensity is lower than a certain threshold, the light source current of the directional light source display screen 1, which is composed of the directional light source component 10 and the display panel 11, is reduced to appropriately reduce the brightness of the image, so that the face image of the VR wearer does not appear too bright.

[0128] This application also provides a virtual reality device. The virtual reality device includes the optical components described above; the virtual reality device further includes a face tracking system for capturing facial image information of the wearer; the optical components are used to display the wearer's facial image information and transmit it to an external observer.

[0129] In this embodiment, the optical components are applied to the virtual reality device, allowing external observers to clearly and distinctly observe the wearer's facial image without affecting the basic display of the virtual reality device (VR display). The facial image includes images of the wearer's eyes and face.

[0130] Specifically, the virtual reality device uses its own facial tracking system to scan the wearer's face and track changes in the wearer's face in real time. Based on the facial image information captured by the facial tracking system, the wearer's facial image information can be clearly and distinctly observed by an external observer through a directional light source display screen 1 that can realize illumination, display, and directional light transmission, combined with an imaging lens group 2.

[0131] It should be noted that before the wearer puts on the virtual reality device, the wearer's face needs to be scanned by a facial tracking system to form the original image information of the wearer's face. After the wearer puts on the virtual reality device, the facial tracking system scans the wearer's face again. Based on the original image information and the facial image information obtained from the rescan, an external observer can observe the wearer's facial changes more clearly and distinctly, thus achieving symmetrical interaction.

[0132] In one embodiment, the virtual reality device includes a display for showing images of a virtual world to a wearer, with the optical components located on the back side of the display.

[0133] In this embodiment, the placement of the optical component is defined. Specifically, the optical component is located on the back of the display of the virtual reality device (the display that VR originally comes with). Without affecting the basic display of the virtual reality device (VR virtual display), it allows external observers to clearly and distinctly observe the wearer's facial image.

[0134] The above embodiments mainly describe the differences between the various embodiments. As long as the different optimization features between the various embodiments are not contradictory, they can be combined to form a better embodiment. For the sake of brevity, they will not be elaborated here.

[0135] While specific embodiments of this application have been described in detail by way of examples, those skilled in the art should understand that the above examples are for illustrative purposes only and are not intended to limit the scope of this application. Those skilled in the art should understand that modifications can be made to the above embodiments without departing from the scope and spirit of this application. The scope of this application is defined by the appended claims.

Claims

1. An optical component, characterized in that, For use in virtual reality devices, the optical components include: a pointing light source assembly (10), a display panel (11), and an imaging lens group (2); The display panel (11) is located on the light-emitting side of the pointing light source assembly (10), and the imaging lens group (2) is located on the light-emitting side of the display panel (11). The pointing light source assembly (10) has a first state and a second state. In the first state, the pointing light source assembly (10) emits a first light containing facial image information of the wearer. The first light is transmitted to one eye of an external observer through the display panel (11) and the imaging lens group (2). In the second state, the pointing light source assembly (10) emits a second light containing facial image information of the wearer, which is transmitted through the display panel (11) and the imaging lens group (2) to the other eye of an external observer.

2. The optical component according to claim 1, characterized in that, The display panel (11) is located within one focal length of the imaging lens group (2).

3. The optical component according to claim 1, characterized in that, The pointing light source assembly (10) includes a light source module (101) and a modulation optical path module (102); The light source module (101) includes a first light source group (1011) and a second light source group (1012) arranged at intervals. The first light source group (1011) and the second light source group (1012) are alternately turned on and off so that the pointing light source component (10) is in the first state and the second state. The modulation optical path module (102) is used to modulate the transmission direction of the light output by the light source module (101) so that the first light and the second light are transmitted to different eyes of an external observer.

4. The optical component according to claim 3, characterized in that, The modulation optical path module (102) includes an array of converging lenses (1021), the convex surface of which faces the light source module (101).

5. The optical component according to claim 3, characterized in that, The light source module (101) further includes a light guide (1013), and the first light source group (1011) and the second light source group (1012) are spaced apart along the length or width direction of the light guide (1013).

6. The optical component according to claim 5, characterized in that, The light guide portion (1013) includes a substrate (1014) and protrusions (1015) disposed on the substrate (1014), the protrusions (1015) being arranged in an array on the substrate (1014).

7. The optical component according to claim 6, characterized in that, The protrusion (1015) has a first surface (1016) and a second surface (1017) disposed opposite to each other. The first surface (1016) is provided with a first functional film, and the second surface (1017) is provided with a second functional film. The first functional film is used to transmit the first light and reflect the second light, and the second functional film is used to transmit the second light and reflect the first light.

8. The optical component according to claim 6, characterized in that, The structure of the protrusion (1015) includes any one of rectangular, conical, or arc shapes.

9. The optical component according to claim 7, characterized in that, Both the first functional film and the second functional film can be circularly polarized films or linearly polarized films.

10. The optical component according to any one of claims 6-9, characterized in that, The modulation optical path module (102) includes an array of converging lenses (1021), the convex surface of which faces the light source module (101), wherein the protrusions (1015) correspond one-to-one with the converging lenses (1021).

11. The optical component according to claim 3, characterized in that, The light source module (101) includes multiple light sources arranged in an array, or the light source module (101) includes at least one light source and a light guide strip for guiding the transmission of light.

12. The optical component according to claim 1, characterized in that, The frequency at which the pointing light source component (10) switches between the first state and the second state is greater than 60 Hz.

13. The optical component according to claim 1, characterized in that, There is an angle between the principal ray of the first ray and the principal ray of the second ray, and the angle is related to the interpupillary distance of the observer.

14. The optical component according to claim 1, characterized in that, The optical component also includes an ambient light sensor, which is electrically connected to the directional light source component (10).

15. A virtual reality device, characterized in that, The virtual reality device includes the optical components as described in any one of claims 1-14; The virtual reality device also includes a facial tracking system, which is used to capture facial image information of the wearer; The optical components are used to display facial image information of the wearer and transmit it to an external observer.

16. The virtual reality device according to claim 15, characterized in that, The virtual reality device includes a display for showing images of a virtual world to the wearer, with the optical components located on the back side of the display.

Images