Near-to-eye display device

Abstract

The utility model discloses a near-to-eye display device, which comprises a main body, an optical lens, a near-to-eye display module and a prism, and is characterized in that the main body is provided with a human eye side and an environment side; the optical lens is connected with the main body and is provided with a viewpoint center; the near-to-eye display module is connected to the main body, the near-to-eye display module is located on the outer periphery of the optical lens, and the near-to-eye display module and the viewpoint center are arranged at intervals; the prism is arranged on the main body and located on the light emitting side of the near-eye display module, the prism and the viewpoint center are arranged in a spaced mode, the prism is configured to deviate a first light beam emitted by the near-eye display module in the first direction to form a second light beam at least in the second direction and then project the second light beam to the human eye side, and the first direction is different from the second direction; the light beam projected to the human eye side does not pass through the viewpoint center. According to the embodiment of the invention, the light beam output by the near-to-eye display module is reflected through the prism, so that the light beam can be reflected to the human eye side, the direction of the light beam is changed through the prism, and the fatigue of a user is reduced.

Description

Technical Field

[0001] This application relates to the field of wearable devices, and particularly to a near-eye display device. Background Art

[0002] Near-to-eye display includes VR (Virtual Reality), AR (Augmented Reality), MR (Mixed Reality), XR (Extended Reality), etc. Near-to-eye display can create virtual images in the monocular or binocular fields of view. Near-to-eye display is a technology that renders light field information to the human eye through a display device placed within the non-clear vision distance of the human eye, and then reconstructs a virtual scene in front of the eyes. In order to enable the light projected by the near-eye display device to enter the human eye, the near-eye display module on the near-eye display device is usually installed in front of the human eye. The projection area of the near-eye display module is inconsistent with the visual axis of the human eye in the normal state, resulting in easy fatigue for users when using the near-eye display device. Utility Model Content

[0003] This application provides a near-eye display device, aiming to improve the problem that the head-mounted display device cannot be aligned with the visual axis of the human eye.

[0004] To achieve the above technical effects, a technical solution adopted in this application is: providing a near-eye display device, including:

[0005] A main body having a human-eye side and an environment side;

[0006] An optical lens connected to the main body, the optical lens having a viewpoint center;

[0007] A near-eye display module connected to the main body, the near-eye display module being located at the outer peripheral edge of the optical lens and being spaced from the viewpoint center; and

[0008] A prism disposed on the main body, the prism being located on the light-emitting side of the near-eye display module, the prism being spaced from the viewpoint center, the prism being configured to deflect a first light beam emitted by the near-eye display module in a first direction to form a second light beam at least along a second direction and then project it to the human-eye side, the first direction and the second direction being different, and the light beam projected to the human-eye side does not pass through the viewpoint center.

[0009] Wherein, in the direction from the environment side to the human-eye side, the projection plane of the prism on the optical lens is spaced from the viewpoint center.

[0010] Among them, the prism includes an incident surface, an exit surface, and at least one reflection surface located between the incident surface and the exit surface; the incident surface and the exit surface are arranged opposite to each other and are used for the light beam projected by the near-eye display module to enter the prism; the reflection surface is used to reflect the light beam input from the incident surface towards the exit surface; the exit surface is arranged towards the human eye side and is used for the light beam reflected by the reflection surface to be output to the human eye side; the incident surface is connected to the light-emitting surface of the near-eye display module.

[0011] Among them, the prism is arranged on the environment side of the main body, the first direction and the second direction are arranged at an angle, and the light-emitting surface of the near-eye display module is arranged away from the human eye side; the reflection surface includes a primary reflection surface and a secondary reflection surface, the primary reflection surface is arranged adjacent to the incident surface, and the primary reflection surface is used to deflect the light beam incident on the incident surface to form a second light beam; the secondary reflection surface is arranged adjacent to the exit surface, and the secondary reflection surface is used to deflect the second light beam to form at least a third light beam in the third direction and then transmit it towards the exit surface, and the third direction is arranged at an angle with the second direction.

[0012] Among them, the prism further includes an intermediate connection surface, the intermediate connection surface is arranged between the primary reflection surface and the secondary reflection surface, and the intermediate connection surface is arranged at an angle with the first direction and the third direction.

[0013] Among them, the prism is arranged on the human eye side of the main body, the first direction and the second direction are arranged at an angle, and the light-emitting surface of the near-eye display module is arranged away from the environment side; the reflection surface includes a primary reflection surface and a secondary reflection surface, the primary reflection surface is arranged adjacent to the incident surface, and the primary reflection surface is used to deflect the light beam incident on the incident surface to form a second light beam; the secondary reflection surface is arranged adjacent to the exit surface, and the secondary reflection surface is used to deflect the second light beam to form at least a third light beam in the third direction and then transmit it towards the exit surface, and the third direction is arranged at an angle with the second direction.

[0014] Among them, the prism further includes an intermediate connection surface, the intermediate connection surface is arranged between the primary reflection surface and the secondary reflection surface, and the intermediate connection surface is arranged at an angle with the first direction and the third direction.

[0015] Among them, the surface curvature of the exit surface is consistent with the surface curvature of the adjacent optical lens.

[0016] Among them, the prism is connected to the near-eye display module; the near-eye display module is movably connected to the main body along a fourth direction to adjust the position of the prism relative to the optical lens, and the fourth direction is arranged at an angle with the first direction.

[0017] Among them, a first connecting member is arranged on the main body, a second connecting member is arranged on the near-eye display module, wherein one of the first connecting member and the second connecting member is made of a magnetic material and the other is a magnetizable material, and the first connecting member and the second connecting member are magnetically connected; an installation groove is formed on the main body, and the first connecting member is embedded in the installation groove.

[0018] Among them, the near-eye display module is at least partially embedded in the installation groove, and the near-eye display module is movably clamped in the installation groove in the fourth direction. The installation groove is provided on the outer peripheral edge of the main body.

[0019] Among them, the main body further includes a lens frame and temple arms. The temple arms are located on both sides of the lens frame. The outer peripheral edge of the optical lens is connected to the lens frame. The near-eye display module is connected to the lens frame. The prism is connected to the near-eye display module or the lens frame. An electrical component is provided on the temple arm, and the near-eye display module is electrically connected to the electrical component.

[0020] Among them, a receiving groove is provided on the lens frame, and the near-eye display module is at least partially embedded in the receiving groove; the near-eye display module includes a display component and an optical component on the side of the display component facing the prism. The display component is at least partially disposed in the receiving groove, and the display component is electrically connected to the electrical component.

[0021] Among them, the receiving groove is opened on the wall surface of the lens frame facing the human eye side or the environment side.

[0022] Among them, the prism is connected to at least one of the display component or the optical component. The display component is movably clamped in the receiving groove in the fourth direction to adjust the position of the prism relative to the optical lens. The fourth direction is set at an angle to the first direction.

[0023] In the above solution, the prism provided on the main body reflects the light beam output by the near-eye display module so that the light beam can be reflected to the human eye side. Since the direction of the light beam can be changed by the prism, the installation position of the near-eye display module can be more located at the outer peripheral position of the main body. On the one hand, it can reduce the occlusion of the field of view of the near-eye display device and improve the use experience of the near-eye display device; on the other hand, it can reduce the fatigue of the user. Description of the Drawings

[0024] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present application. For those skilled in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0025] Figure 1 It is a schematic structural diagram of an example of the near-eye display device of the present application;

[0026] Figure 2 It is a schematic structural diagram of another example of the near-eye display device of the present application;

[0027] Figure 3 It is a schematic structural diagram of an example of the use state of the near-eye display module of the present application;

[0028] Figure 4It is a schematic structural diagram of another example of the usage state of the near-eye display module of the present application;

[0029] Figure 5 It is a schematic structural diagram of an example of a prism of the present application;

[0030] Figure 6 It is a schematic structural diagram of yet another example of the usage state of the near-eye display module of the present application;

[0031] Figure 7 It is a schematic structural diagram of an example of the environmental side of the spectacle frame of the present application;

[0032] Figure 8 It is a schematic structural diagram of an example of the connection method between the near-eye display module and the spectacle frame of the present application;

[0033] Figure 9 It is a schematic structural diagram of an example of the near-eye display module and the prism of the present application;

[0034] Figure 10 It is a schematic structural diagram of another example of the connection method between the near-eye display module and the spectacle frame of the present application;

[0035] Figure 11 It is a schematic structural diagram of an example of the near-eye display module of the present application.

[0036] Wherein: 100, main body; 110, spectacle frame; 111, installation groove; 112, first connecting member; 113, accommodating groove; 120, temple; 121, electrical component; 130, human eye side; 140, environmental side; 150, optical lens; 151, viewpoint center; 200, near-eye display module; 210, optical component; 211, bracket; 220, display component; 221, micro display; 222, driving component; 223, connector; 230, second connecting member; 240, housing; 300, prism; 310, incident surface; 320, reflection surface; 321, primary reflection surface; 322, secondary reflection surface; 323, intermediate connecting surface; 330, exit surface; a, first direction; b, second direction; c, third direction; d, fourth direction. Detailed implementation manners

[0037] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative efforts belong to the scope of protection of the present application.

[0038] In the description of the present application, it should be understood that the orientation or positional relationships indicated by the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present application. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more features. In the description of the present application, "a plurality of" means two or more, unless otherwise specifically defined. It should be noted that, unless otherwise clearly specified and limited, the terms "mounted", "connected" and "coupled" in the description of the present application should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the internal communication of two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0039] In the present application, the term "exemplary" is used to mean "serving as an example, instance, or illustration". Any embodiment described as "exemplary" in the present application is not necessarily to be construed as more preferred or advantageous than other embodiments. The following description is provided to enable any person skilled in the art to make and use the present application. In the following description, details are set forth for the purpose of explanation. It should be understood that those of ordinary skill in the art can recognize that the present application can be implemented without these specific details. In other instances, well-known structures and processes are not described in detail to avoid unnecessary details from obscuring the description of the present application. Therefore, the present application is not intended to be limited to the embodiments shown, but is to be accorded the widest scope consistent with the principles and features disclosed herein.

[0040] Near-eye display devices can include VR, AR, MR, or XR, etc. A near-eye display device can be a display device with near-eye display function installed on ordinary optical lenses, or a display device with near-eye display function arranged on processed optical lenses. The processed optical lenses described in the examples of this application can also be lenses with functions such as optical waveguides and holographic waveguides. It can be understood that the near-eye display device in the examples of this application can also include other functional components. For example, the near-eye display device can be a head-mounted display device, and the near-eye display device can also include temple arms for connecting the optical lenses or other support structures that can support the optical lenses on the head so that the optical lenses can be maintained in a preset position.

[0041] Please refer to Figure 1 and Figure 2 As an example of a near-eye display device proposed in this application, the near-eye display device includes a main body 100, an optical lens 150, a near-eye display module 200, and a prism 300; the main body 100 has a human-eye side 130 and an environment side 140; the optical lens 150 is connected to the main body 100, and the optical lens 150 has a viewing point center 151; the near-eye display module 200 is connected to the main body 100, the near-eye display module 200 is located at the outer peripheral edge of the optical lens 150, and is spaced from the viewing point center 151; the prism 300 is arranged on the main body 100, the prism 300 is located on the light-emitting side of the near-eye display module 200, the prism 300 is spaced from the viewing point center 151, and the prism 300 is configured to deflect the first light beam emitted by the near-eye display module 200 in the first direction a to form a second light beam at least along the second direction b and then project it onto the human-eye side 130. The first direction a and the second direction b are different, and the light beam projected onto the human-eye side 130 does not pass through the viewing point center 151.

[0042] The main body 100 of the near-eye display device can be used to be worn on the head, and the main body 100 can also have a display device such as a display screen. The main body 100 has a human-eye side 130 and an environment side 140. Among them, the human-eye side 130 is the side of the main body 100 facing the user's eyes, and the environment side 140 can be the area other than the human-eye side 130. Optionally, in the examples of this application, the human-eye side 130 and the environment side 140 are opposite sides of the main body 100. The main body 100 has the above-mentioned human-eye side 130 and environment side, and the ambient light on the environment side 140 can pass through the optical lens 150 and project onto the human eyes.

[0043] The optical lens 150 can be a plano lens, or it can be a lens with a certain diopter, or it can be a lens with functions such as optical waveguide and holographic waveguide after being processed. One or more optical lenses 150 can be provided on the main body 100 in the examples of the present application. The viewing point center 151 can be the center of the optical lens 150 measured through the interpupillary distance between the wearer's two eyes; or the optical lens 150 combines the overall geometric horizontal line and geometric vertical line of the main body 100 to determine the center of the optical lens 150, etc. The viewing point center 151 in the attached drawings of the present application is only an exemplary indication, and it does not limit that the viewing point center 151 of the optical lens can only be located at this position. The optical lens has a thickness direction, one side of the thickness direction of the optical lens faces the human eye, and the other side faces away from the human eye. Ambient light passes through the optical lens from the ambient side of the main body 100 and is transmitted to the human eye side. For convenience of description, in this example, the ambient side of the main body 100 can be consistent with the surface of the side of the thickness direction of the optical lens that faces away from the human eye, and the human eye side of the main body 100 can be consistent with the surface of the side of the thickness direction of the optical lens that faces the human eye.

[0044] Please refer to Figure 3 and Figure 4 , the near-eye display module 200 can be used to project a preset image signal towards the human eye. The near-eye display module 200 can include an optical engine, and the optical engine can include a microdisplay 221, such as Micro-LED (MicroLight-Emitting Diode, micro light-emitting semiconductor), uLED (micro light-emitting diode), Micro-oled (MicroOrganic Light-Emitting Diode, micro organic light-emitting diode), LCoS (Liquid Crystal OnSilicon, liquid crystal on silicon), LCD (Liquid Crystal Display, liquid crystal display), DMD (DigitalMicromirror Device, digital micromirror device) / DLP (Digital Light Processing, digital light processing) or LBS (Laser Beam Scanning, laser beam scanning), etc., or any combination of these technologies. It can be understood that the optical engine can also include an optical component 210, etc. The optical component 210 is arranged in front of the microdisplay 221, and the light of the microdisplay 221 is emitted after passing through the optical component 210. The near-eye display module 200 is located at the outer peripheral edge of the optical lens 150, and the near-eye display module 200 is spaced from the viewing point center 151, which means that the viewing point center 151 is not blocked. In this example, the near-eye display module 200 can be arranged outside the outer peripheral edge of the optical lens 150 so that the near-eye display module 200 does not block the optical lens at all.

[0045] Please refer toFigure 3 , Figure 4 and Figure 5 , the prism 300 is located on the light-emitting side of the near-eye display module 200. The prism 300 is used to reflect the light projected by the near-eye display module 200 to change the propagation direction of the light. Under the action of the prism 300, the light projected by the near-eye display module 200 changes the transmission direction, and the light beam is transmitted toward the human eye side 130. The prism 300 can be connected to the main body 100, and the light beam is reflected or refracted on the upper surface of the prism 300 to change the transmission direction of the light beam. During installation, the near-eye display module 200 and the prism 300 can be integrally installed on the main body 100. The prism 300 is spaced from the viewpoint center 151, which means that the prism 300 does not block the position of the viewpoint center 151, so that ambient light can be transmitted toward the human eye side through the viewpoint center 151. The prism 300 is configured to offset the first light beam emitted by the near-eye display module 200 in the first direction a to form at least a second light beam along the second direction b and then project it to the human eye side 130. The first direction a and the second direction b are different, and the light beam projected to the human eye side 130 does not pass through the viewpoint center 151. The first direction a is the direction of the first light beam output by the eye display module 200. The transmission direction of the first light beam output by the near-eye display module 200 is offset under the action of the prism to form a second light beam transmitted along the second direction b, and the second direction b is not parallel to the first direction a. The second light beam in this example can be directly projected to the human eye side 130.

[0046] Please refer to Figure 1 , Figure 3 , Figure 4 and Figure 6, taking a smart glasses as an example of a near-eye display device, the main body 100 of the smart glasses may include a frame 110 and temple arms 120. At least one optical lens 150 may be mounted on the frame 110. In this example, the near-eye display module 200 may be mounted on the edge or outside of the optical lens 150. The position of the prism 300 in this example corresponds to the position of the light-emitting surface of the near-eye display module 200. The prism 300 may be located on the human-eye side 130 or the environment side 140, so that the light beam output from the light-emitting surface can be reflected and refracted by the prism 300, and the light beam is transmitted to the pupil position of the human eye, so that the transmission direction of the light beam is adapted to the visual axis of the human eye. In this example, the near-eye display module 200 may be arranged at a position close to the outer peripheral edge of the optical lens 150, or the near-eye display module 200 may be mounted outside the outer peripheral edge of the optical lens 150, thereby reducing the occlusion of the optical lens 150 by the near-eye display module 200 and reducing the foreign body sensation on the near-eye display device; the light beam output by the near-eye display module in this example can be deflected by the prism 300, thereby making the selection of the installation position of the near-eye display module 200 more diverse; since the near-eye display module 200 can be mounted on the edge or outside of the optical lens 150, the space outside the optical lens 150 can be utilized, so that the near-eye display module 200 has a larger installation space, and at the same time, the installation difficulty of the near-eye display module 200 can be reduced.

[0047] Please refer to Figure 3 , the light-emitting surface of the near-eye display module 200 in the example of the present application may face the human-eye side or the environment side, and the near-eye display module 200 may be arranged above, below or at other positions of the optical lens 150; optionally, the light-emitting surface of the near-eye display module may be located on the environment side, the light-emitting surface of the near-eye display module may be arranged at an angle with the optical lens, the prism 300 is arranged outside the light-emitting surface of the near-eye display module 200, and the prism 300 may be located on the environment side 140, wherein the near-eye display module 200 may be completely arranged outside the outer peripheral edge of the optical lens 150, so that the near-eye display module 200 does not occupy the position of the environment side 140 and does not block the ambient light of the optical lens 150.

[0048] Please refer to Figure 4 , the light-emitting surface of the near-eye display module 200 in the example of the present application may be arranged facing away from the environment side 140, the prism 300 is arranged outside the light-emitting surface of the near-eye display module 200, and the prism 300 may be located on the environment side 140. The near-eye display module 200 may be completely arranged outside the outer peripheral edge of the optical lens 150, so that the near-eye display module 200 does not occupy the position of the environment side 140 and does not block the ambient light of the optical lens 150.

[0049] Please refer to Figure 6, in the example of this application, the light-emitting surface of the near-eye display module 200 can be arranged facing the human eye side 130. The prism 300 is arranged outside the light-emitting surface of the near-eye display module 200, and the prism 300 can be located on the human eye side 130. The near-eye display module 200 can be completely arranged outside the outer peripheral edge of the optical lens 150, so that the near-eye display module 200 does not occupy the position of the human eye side 130 and does not block the optical lens 150.

[0050] The near-eye display module 200 in this example has a light-emitting surface. After the light beam is output from the light-emitting surface of the near-eye display module 200, it is transmitted in the direction of the prism 300. Under the action of the prism 300, the light beam is transmitted in the direction of the human eye side 130. The light beam output by the near-eye display module 200 can at least be reflected by the prism 300, so that the direction of the light beam when it is output to the human eye can be better aligned with the pupil of the human eye. The user does not need to frequently turn the eyes to obtain the image projected by the near-eye display device, thereby reducing the fatigue of the user when using the near-eye display device.

[0051] In some examples, in the direction from the environment side 140 to the human eye side 130, the projection surface of the prism 300 on the optical lens 150 is arranged at an interval from the viewpoint center 151. In this example, the prism 300 is arranged at an interval from the viewpoint center 151 so that the prism 300 does not block the viewpoint center 151. When natural light is transmitted from the environment side to the human eye side, the prism 300 does not block the natural light.

[0052] Please refer to Figures 3 to 6 , in some examples, the prism 300 includes an incident surface 310, an exit surface 330, and at least one reflection surface 320 located between the incident surface 310 and the exit surface 330; the incident surface 310 and the exit surface 330 are arranged opposite to each other for the light beam projected by the near-eye display module 200 to enter the prism 300; the reflection surface 320 is used to reflect the light beam input by the incident surface 310 in the direction of the exit surface 330; the exit surface 330 is arranged facing the human eye side 130 for the light beam reflected by the reflection surface 320 to be output to the human eye side 130; the incident surface 310 is connected to the light-emitting surface of the near-eye display module.

[0053] The incident surface 310 faces the light-emitting surface of the near-eye display module 200. In this example, the incident surface 310 can be attached to the light-emitting surface of the near-eye display module 200. The first light beam projected by the near-eye display module 200 along the first direction a enters the prism 300 through the incident surface 310. When the first light beam emitted by the near-eye display module 200 is perpendicular to the incident surface 310, the angle of the light beam does not change and the light beam does not refract.

[0054] The prism 300 has at least one reflecting surface 320. The first light beam input into the prism 300 from the incident surface 310 is deflected in direction under the action of the reflecting surface 320 to form a second light beam transmitted along the second direction b, and the second light beam is transmitted towards the exit surface 330. The light beam exits to the outside of the prism 300 at the exit surface 330. When the light beam reflected from the reflecting surface 320 is perpendicular to the exit surface 330, the angle of the light beam when it exits from the exit surface 330 may not change, and the light beam does not refract. In this example, the incident surface and the exit surface are arranged opposite to each other, which means that the incident surface and the exit surface are arranged parallel to each other or at a certain angle to each other. In this example, the reflecting surface may be arranged adjacent to the exit surface or at intervals from each other. The second light beam exits from the exit surface 330 to the human eye side. Due to the action of the prism 300, the propagation direction of the light beam output from the light exit surface changes. Therefore, when the light exit surface of the near-eye display module 200 is not facing the human eye, the light beam output by the near-eye display module 200 can also be transmitted to the human eye under the action of the prism 300, and the user does not need to turn the eyeball significantly to obtain the signal projected by the near-eye display module 200.

[0055] Please refer to Figure 5 In some examples, the surface curvature of the exit surface 330 of the prism 300 is consistent with the surface curvature of the adjacent optical lens. When the surface of the optical lens 150 facing the exit surface 330 is a concave surface, the exit surface 330 can be a convex arc surface. When the surface of the optical lens 150 facing the exit surface 330 is a convex surface, the exit surface 330 can be a concave arc surface. The exit surface 330 of the prism 300 in this example is used to cooperate with the optical lens 150, and the exit surface 330 can be supported on the surface of the optical lens 150. On the one hand, it can improve the stability of the prism 300; on the other hand, when the light beam exits from the exit surface 330, the light beam can be adapted to the optical design of the optical lens 150.

[0056] Please refer to Figure 4 In some examples, the number of reflecting surfaces 320 can be multiple. Optionally, the prism 300 is arranged on the environment side 140 of the optical lens 150, the first direction a and the second direction b are arranged at an angle, and the light exit surface of the near-eye display module 200 is arranged away from the human eye side 130; the reflecting surface 320 includes a primary reflecting surface 321 and a secondary reflecting surface 322. The primary reflecting surface 321 is arranged adjacent to the incident surface 310, and the primary reflecting surface 321 is used to deflect the light beam incident on the incident surface 310 to form a second light beam; the secondary reflecting surface 322 is arranged adjacent to the exit surface 330, and the secondary reflecting surface 322 is used to deflect the second light beam to form at least a third light beam in the third direction c and then transmit it towards the exit surface 330, and the third direction c is arranged at an angle to the second direction b.

[0057] The prism 300 is disposed on the environment side 140 to reduce the intrusion feeling of the optical lens 150 on the human eye side 130. The light-emitting surface of the near-eye display module 200 is disposed away from the human eye side 130, which means that the light-emitting surface of the near-eye display module 200 is not located on the human eye side 130. In this example, the near-eye display module 200 can be disposed outside the outer periphery of the optical lens 150 along the second direction b1b or the third direction c1c. Optionally, the light-emitting surface of the near-eye display module 200 can face away from the human eye side 130 and can be disposed facing the environment side 140; optionally, the light-emitting surface can also be disposed at an angle to the optical lens. Since the prism 300 can cooperate with the near-eye display module 200 to change the propagation direction of the light beam output by the near-eye display module 200, the light beam output by the near-eye display module 200 can be transmitted to the human eye through the prism 300, while reducing the occlusion of the optical lens 150 by the near-eye display module 200.

[0058] In this example, both the first reflection surface 321 and the second reflection surface 322 are surfaces of the prism 300. Among them, the first light beam incident from the incident surface is deflected by the first reflection surface 321 to form a second light beam. The second light beam is transmitted in the second direction b towards the second reflection surface 322. The second light beam is deflected by the second reflection surface to form a third light beam transmitted in the third direction c. The third light beam is transmitted from the exit surface 330 towards the human eye side. In this example, by setting multiple reflection surfaces, the light beam output by the near-eye display module 200 can be deflected in multiple directions, thereby changing the propagation direction of the light beam. The first reflection surface 321 and the second reflection surface 322 can be adjacent to each other, or the first reflection surface can be spaced apart from the second reflection surface.

[0059] In some examples, the prism 300 further includes an intermediate connection surface 323. The intermediate connection surface 323 is disposed between the first reflection surface 321 and the second reflection surface 322, and the intermediate connection surface 323 is disposed at an angle to the first direction a and the third direction c. The intermediate connection surface 323 in this example serves as the intermediate surface between the first reflection surface and the second reflection surface 322. Among them, the number of the intermediate connection surfaces 323 can be one or more. By setting the intermediate connection surface 323, the distance between the first reflection surface and the second reflection surface can be increased. On the one hand, it is convenient to process and adapt the first reflection surface 321 and the second reflection surface 322. On the other hand, by increasing the distance between the first reflection surface 321 and the second reflection surface 322 through the intermediate connection surface 323, the third light beam output by the second reflection surface can be more easily aligned with the pupil of the human eye, so that when the human eye views the image information output by the near-eye display module 200, the rotation amplitude of the eyeball can be reduced, thereby reducing the fatigue of the human eye. In this example, the prism is disposed on the environment side, and the third direction c can be parallel to the first direction a. Further, the third direction c can also be opposite to the first direction a.

[0060] In some examples, the prism 300 is disposed on the human eye side 130, the first direction a and the second direction b are arranged at an angle, and the light-emitting surface of the near-eye display module 200 is disposed away from the environment side 140; the reflecting surface 320 includes a primary reflecting surface 321 and a secondary reflecting surface 322. The primary reflecting surface 321 is disposed adjacent to the incident surface 310, and the primary reflecting surface 321 is configured to deflect the light beam incident on the incident surface 310 to form a second light beam; the secondary reflecting surface 322 is disposed adjacent to the exit surface 330, and the secondary reflecting surface 322 is configured to deflect the second light beam to form a third light beam in at least the third direction c and transmit it backward to the exit surface 330. The third direction c is arranged at an angle with the second direction b.

[0061] In this example, the prism 300 is located on the human eye side, and the first light beam output by the near-eye display module 200 can be directed toward the human eye side. The number of the reflecting surfaces 320 can be multiple. In this example, the primary reflecting surface 321 and the secondary reflecting surface 322 are both two of the surfaces of the prism 300. The first light beam incident from the incident surface is deflected by the primary reflecting surface 321 to form a second light beam. The second light beam is transmitted in the second direction b toward the secondary reflecting surface 322. The second light beam is deflected by the second reflecting surface to form a third light beam transmitted in the third direction c. The third light beam is transmitted from the exit surface 330 toward the human eye side. In this example, by providing multiple reflecting surfaces, the light beam output by the near-eye display module 200 can be deflected in direction multiple times, and thus the propagation direction of the light beam can be changed. The primary reflecting surface 321 and the secondary reflecting surface 322 can be adjacent to each other, or the primary reflecting surface can be spaced apart from the secondary reflecting surface. In this example, the third direction c can be parallel to the first direction a, the third direction c can be the same as the first direction a, and the first light beam and the third light beam can both be transmitted in the direction toward the human eye side.

[0062] In some examples, the prism 300 further includes an intermediate connection surface 323 disposed between the primary reflection surface 321 and the secondary reflection surface 322. The intermediate connection surface 323 is arranged at an angle with respect to the first direction a and the third direction c. The intermediate connection surface 323 in this example can be a surface of the prism 300 facing away from the environment side. Optionally, the intermediate connection surface can be parallel to the incident surface. The intermediate connection surface 323 in this example serves as an intermediate surface between the primary reflection surface and the secondary reflection surface 322. Herein, the number of the intermediate connection surfaces 323 can be one or more. By providing the intermediate connection surface 323, the distance between the primary reflection surface and the secondary reflection surface can be increased. On the one hand, it is convenient for processing and adaptation of the primary reflection surface 321 and the secondary reflection surface 322. On the other hand, by increasing the distance between the primary reflection surface 321 and the secondary reflection surface 322 through the intermediate connection surface 323, the third light beam output by the secondary reflection surface can more easily align with the pupil of the human eye. When the human eye views the image information output by the near-eye display module 200, the rotation amplitude of the eyeball can be reduced, thereby reducing the fatigue of the human eye.

[0063] In some examples, the main body 100 further includes a frame 110. The frame 110 is connected to the outer periphery of the optical lens 150. The near-eye display module 200 is connected to the frame 110, and the prism 300 is connected to the near-eye display module 200 or the frame 110.

[0064] The frame 110 can serve as the frame structure of the main body 100. In the examples of the present application, the frame 110 can completely cover the outer periphery of the optical lens 150, or the frame 110 can partially cover the outer periphery of the optical lens 150. One or more optical lenses 150 can be provided on the frame 110 in the examples of the present application. When multiple optical lenses 150 are provided, the near-eye display module 200 and the prism 300 can be respectively arranged at the positions of the frame 110 corresponding to each optical lens 150.

[0065] The near-eye display module 200 is connected to the frame 110 so that the near-eye display module 200 can be interconnected with the main body 100, and the near-eye display module 200 can maintain a preset position on the main body 100. The prism 300 can be connected to the frame 110 or the near-eye display module 200 so that the prism 300 can be in a preset position outside the optical lens 150.

[0066] In some examples, the prism 300 is connected to the near-eye display module 200; the near-eye display module 200 is movably connected to the main body 100 along the fourth direction d to adjust the position of the prism 300 relative to the optical lens 150, and the fourth direction d is arranged at an angle with respect to the first direction a.

[0067] The fourth direction d in this example can be the width direction of the main body 100. When the near-eye display device has two temple arms, the fourth direction d can be the direction from one temple arm to the other temple arm.

[0068] The near-eye display module 200 can be detachably connected to the main body 100 to adjust the position of the near-eye display module 200 on the main body 100. The near-eye display module 200 can also be slidably or rotatably connected to the main body 100. In this example, for the convenience of description, the case where the near-eye display module 200 is connected to the frame 110 is taken as an example for elaboration. The prism 300 is connected to the near-eye display module 200 so that the prism 300 can move synchronously with the near-eye display module 200. In this example, the near-eye display module 200 can be snap-connected, inserted, or connected in other ways to the frame 110 so that the near-eye display module 200 can move relative to the frame 110. By adopting the movable connection method, the relative position of the near-eye display module 200 can be adjusted when needed, so that the near-eye display module 200 and the prism 300 can project the light beam to the human eye better.

[0069] In some examples, a first connecting member 112 is provided on the main body 100, and a second connecting member 230 is provided on the near-eye display module 200. Among them, one of the first connecting member 112 and the second connecting member 230 is made of a magnetic material, and the other is a magnetizable material, and the first connecting member 112 is magnetically connected to the second connecting member 230.

[0070] One of the first connecting member and the second connecting member being made of a magnetic material means that one of the first connecting member and the second connecting member contains a magnetic material. Taking the first connecting member as the magnetic material as an example, the first connecting member can be an overall magnet structure, or the first connecting member can be a structure containing a magnetic material and having magnetic adsorption performance. The magnetizable material means that the structure can be adsorbed by the magnetic material. The magnetizable material can be a material containing a magnetic material, or the magnetizable material can also be a material that can be magnetically adsorbed and contains iron-based alloys, Mn-Zn ferrites, Ni-Zn ferrites, and composite materials. In this example, one of the first connecting member and the second connecting member is made of a magnetic material so that it can generate a magnetic adsorption force, and the other is a magnetizable material so that it can be magnetically adsorbed. In this example, by cooperating the magnetic material with the magnetizable material, one of the first connecting member and the second connecting member can be connected to the main body 100. Due to the cooperation of the magnetic adsorption method, no additional connecting member needs to be provided between the first connecting member and the second connecting member, which can simplify the connection structure of the near-eye display module 200 and the main body 100.

[0071] Please refer to Figure 7, in some examples, an installation groove 111 is formed on the main body 100, the first connecting member 112 is embedded in the installation groove 111, and the near-eye display module 200 is movably clamped in the installation groove 111 in the fourth direction d. The installation groove 111 is provided on the outer peripheral edge of the main body 100.

[0072] The installation groove 111 can be a groove recessed inwardly of the main body 100. The installation groove 111 is used to form a space for accommodating the first connecting member 112, so as to reduce the problem of the increase in the volume of the near-eye display device caused by the protrusion of the first connecting member 112 outside the main body 100. In this example, the installation groove 111 can be provided on the spectacle frame 110. The installation groove 111 can be located on the outer peripheral surface of the spectacle frame 110 to move the near-eye display module 200 and the prism 300 along the fourth direction d from the outer peripheral edge position of the spectacle frame 110.

[0073] The first connecting member 112 is embedded in the installation groove 111 so that the installation groove 111 can be used to position the first connecting member 112. In this example, the first connecting member 112 can be entirely located within the installation groove 111, or the first connecting member 112 can be partially located within the installation groove 111.

[0074] Please refer to Figure 8 and Figure 9 , after the first connecting member 112 is installed in the installation groove 111, at least a part of the near-eye display module 200 is embedded in the installation groove 111, so that the installation groove 111 can form a space for accommodating the near-eye display module 200, thereby reducing the volume of the near-eye display device. In this example, the first connecting member 112 can be disposed opposite to the second connecting member 230. The first connecting member 112 can be disposed on one of the walls of the installation groove 111, and the second connecting member 230 is disposed corresponding to the first connecting member 112 so that the first connecting member 112 can adsorb to the second connecting member 230.

[0075] In some examples, the main body 100 further includes a spectacle frame 110 and temple arms 120. The temple arms 120 are located on both sides of the spectacle frame 110. The outer peripheral edge of the optical lens 150 is connected to the spectacle frame 110. The near-eye display module 200 is connected to the spectacle frame 110. The prism 300 is connected to the near-eye display module 200 or the spectacle frame 110. An electrical component 121 is provided on the temple arms 120. The near-eye display module 200 is electrically connected to the electrical component 121. In this example, the near-eye display module 200 is installed on the spectacle frame, and the electrical component is installed on the temple arms, so that the near-eye display module and the electrical component are separately arranged, so as to make full use of the space on the spectacle frame, and at the same time, it can help reduce the volume and weight of the temple arms. In this example, the electrical component 121 can be a battery, or a circuit board or other electrical structures.

[0076] Please refer to Figure 10, in some examples, a receiving groove 113 is provided on the spectacle frame 110, and the near-eye display module 200 is at least partially embedded in the receiving groove 113; the near-eye display module 200 includes a display component 220 and an optical component 210 on one side of the display component 220 facing the prism 300. The display component 220 is at least partially disposed in the receiving groove 113, and the display component 220 is electrically connected to the electrical component 121.

[0077] The receiving groove 113 may be a groove recessed inwardly of the spectacle frame 110. The receiving groove 113 is used to form a space for receiving the near-eye display module 200, so as to reduce the problem of the increase in the volume of the main body 100 caused by the protrusion of the near-eye display module 200 outside the main body 100. The receiving groove 113 may be located on the wall surface of the spectacle frame 110 facing the human eye side or the environment side, so as to make full use of the thickness space of the main body 100 in the direction from the human eye side to the environment side, thereby helping to reduce the overall volume of the near-eye display device. The near-eye display module 200 may be partially or completely located in the receiving groove 113, and the light-emitting surface of the near-eye display module 200 faces the outside of the receiving groove 113, so as to reduce the volume of the near-eye display device. In some examples, the first connecting member 112 described above is provided in the receiving groove 113, and the second connecting member 230 described above is provided on the near-eye display module. The first connecting member and the second connecting member are magnetically connected to reduce the displacement of the near-eye display module.

[0078] In some examples, the prism 300 is connected to at least one of the display component 220 or the optical component 210. The display component 220 is movably clamped in the receiving groove 113 along the fourth direction d to adjust the position of the prism 300 relative to the optical lens 150. The fourth direction d is set at an angle to the first direction a. The receiving groove 113 in this example has a length direction, and the length direction of the receiving groove is set along the fourth direction d. When the display component 220 moves in the receiving groove along the fourth direction d, the position of the prism also changes synchronously.

[0079] Please refer to Figure 9 、 Figure 10 and Figure 11, in some examples, the near-eye display module 200 may include a housing 240, a display component 220, and an optical component 210. The housing 240 has an inner cavity and a through-hole connecting the inner cavity. The display component 220 may be installed in the inner cavity. The optical component 210 corresponds to the position of the through-hole. The microdisplay 221 may be one of the above-mentioned Micro-LED, uLED, Micro-oled, LCoS, LCD, DMD / DLP, or LBS. The light beam generated by the microdisplay 221 is transmitted to the outside through the optical component 210. Optionally, the microdisplay 221 may further include a driving component 222 and a connector 223. Among them, the driving component 222 may include a circuit board, and the connector 223 may be used to connect an external circuit. The connector 223 may be a flexible circuit board. In some examples, a bracket 211 may be provided on the side of the microdisplay 221 facing the optical component 210, and the optical component 210 may be installed on the bracket 211 to limit the optical component 210. When one of the display component 220 or the optical component 210 moves along the fourth direction d, the relative position of the prism on the optical lens also changes synchronously, and thus the light output position of the prism can be changed so that the light output position of the prism matches the position of the human eye pupil.

[0080] The above are only the embodiments of the present application, and do not limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made by using the content of the specification and drawings of the present application, or directly or indirectly applied in other related technical fields, shall be included in the patent protection scope of the present application by the same token.

Claims

1. A near-eye display device, characterized in that, Comprising: A main body (100) having a human eye side (130) and an environment side (140); An optical lens (150) connected to the main body (100), the optical lens (150) having a viewing point center (151); A near-eye display module (200) connected to the main body (100), the near-eye display module (200) being located at the outer peripheral edge of the optical lens (150) and being spaced apart from the viewing point center (151); And A prism (300) disposed on the main body (100), the prism (300) being located on the light-emitting side of the near-eye display module (200), the prism (300) being spaced apart from the viewing point center (151), the prism (300) being configured to offset a first light beam emitted by the near-eye display module (200) in a first direction to form a second light beam at least along a second direction and then project it onto the human eye side (130), the first direction and the second direction being different, and the light beam projected onto the human eye side (130) not passing through the viewing point center (151).

2. The near-eye display device according to claim 1, wherein In the direction from the environment side (140) to the human eye side (130), the projection surface of the prism (300) on the optical lens (150) is spaced apart from the viewing point center (151).

3. The near-eye display device according to claim 2, wherein The prism (300) includes an incident surface (310), an exit surface (330), and at least one reflecting surface (320) located between the incident surface (310) and the exit surface (330); the incident surface (310) and the exit surface (330) are oppositely disposed for allowing the light beam projected by the near-eye display module (200) to enter the prism (300); the reflecting surface (320) is used for reflecting the light beam input by the incident surface (310) in the direction of the exit surface (330); the exit surface (330) is disposed facing the human eye side (130) for allowing the light beam reflected by the reflecting surface (320) to be output to the human eye side (130); the incident surface (310) is connected to the light-emitting surface of the near-eye display module.

4. The near-eye display device according to claim 3, wherein, The prism (300) is disposed on the environment side (140) of the main body (100), the first direction and the second direction are disposed at an angle, and the light-emitting surface of the near-eye display module (200) is disposed away from the human eye side (130); the reflecting surface (320) includes a primary reflecting surface (321) and a secondary reflecting surface (322), the primary reflecting surface (321) is disposed adjacent to the incident surface (310), and the primary reflecting surface (321) is used for offsetting the light beam incident on the incident surface (310) to form the second light beam; the secondary reflecting surface (322) is disposed adjacent to the exit surface (330), and the secondary reflecting surface (322) is used for offsetting the second light beam to form a third light beam at least in a third direction and then transmitting it to the exit surface (330), the third direction and the second direction being disposed at an angle.

5. The near-eye display device according to claim 4, characterized in that, The prism (300) further includes an intermediate connecting surface (323) disposed between the first reflection surface (321) and the second reflection surface (322), and the intermediate connecting surface (323) is disposed at an angle to the first direction and the third direction.

6. The near-eye display device according to claim 3, wherein, The prism (300) is disposed on the human eye side (130) of the main body (100), the first direction and the second direction are disposed at an angle, and the light-emitting surface of the near-eye display module (200) is disposed away from the environment side (140); the reflection surface (320) includes a first reflection surface (321) and a second reflection surface (322), the first reflection surface (321) is disposed adjacent to the incident surface (310), and the first reflection surface (321) is configured to deflect the light beam incident on the incident surface (310) to form the second light beam; the second reflection surface (322) is disposed adjacent to the exit surface (330), and the second reflection surface (322) is configured to deflect the second light beam to form a third light beam in at least the third direction and transmit it to the exit surface (330), and the third direction is disposed at an angle to the second direction.

7. The near-eye display device according to claim 6, wherein The prism (300) further includes an intermediate connecting surface (323) disposed between the first reflection surface (321) and the second reflection surface (322), and the intermediate connecting surface (323) is disposed at an angle to the first direction and the third direction.

8. The near-eye display device according to claim 3, wherein, The surface curvature of the exit surface (330) is consistent with the surface curvature of the adjacent optical lens.

9. The near-eye display device according to claim 1, wherein, The prism (300) is connected to the near-eye display module (200); the near-eye display module (200) is movably connected to the main body (100) in a fourth direction to adjust the position of the prism (300) relative to the optical lens (150), and the fourth direction is disposed at an angle to the first direction.

10. The near-eye display device according to claim 1, characterized in that, A first connecting member (112) is provided on the main body (100), and a second connecting member (230) is provided on the near-eye display module (200). One of the first connecting member (112) and the second connecting member (230) is made of a magnetic material, and the other is a magnetizable material. The first connecting member (112) is magnetically connected to the second connecting member (230); an installation groove (111) is formed on the main body (100), and the first connecting member (112) is embedded in the installation groove (111).

11. The near-eye display device according to claim 10, wherein, At least a part of the near-eye display module (200) is embedded in the installation groove (111), and the near-eye display module (200) is movably clamped in the installation groove (111) in the fourth direction, and the installation groove (111) is provided on the outer periphery of the main body (100).

12. The near-eye display device according to claim 1, characterized in that, The main body (100) further includes a spectacle frame (110) and temple arms (120). The temple arms (120) are located on both sides of the spectacle frame (110). The outer peripheral edge of the optical lens (150) is connected to the spectacle frame (110). The near-eye display module (200) is connected to the spectacle frame (110). The prism (300) is connected to the near-eye display module (200) or the spectacle frame (110). An electrical component (121) is provided on the temple arm (120), and the near-eye display module (200) is electrically connected to the electrical component (121).

13. The near-eye display device according to claim 12, wherein A receiving groove (113) is provided on the spectacle frame (110), and at least a part of the near-eye display module (200) is embedded in the receiving groove (113); the near-eye display module (200) includes a display component (220) and an optical component (210) on a side of the display component (220) facing the prism (300). The display component (220) is at least partially disposed in the receiving groove (113), and the display component (220) is electrically connected to the electrical component (121).

14. The near-eye display device according to claim 13, wherein The receiving groove (113) is formed on a wall surface of the spectacle frame (110) facing the human eye side (130) or the environment side (140); the prism (300) is connected to at least one of the display component (220) or the optical component (210). The display component (220) is movably clamped in the receiving groove (113) along a fourth direction to adjust the position of the prism (300) relative to the optical lens (150), and the fourth direction is set at an angle to the first direction.

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