Near-to-eye display module and device
By designing a releasably connected second shell and vision correction optical elements in the near-eye display module, the problem of users with visual impairments being unable to clearly see digital content is solved, lightweighting and improved protection performance are achieved, and adaptation to different vision needs is achieved.
Patent Information
- Application Number
- CN202422329885.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-23
- Publication Date
- 2025-09-16
- Estimated Expiration
- 2034-09-23
AI Technical Summary
Existing near-eye display devices are difficult to adapt to people with visual impairments, who cannot see digital content clearly.
A near-eye display module is designed, comprising a first shell and a second shell, a microdisplay and an optical element. The second shell is releasably connected to the first shell. The second optical element provides vision correction, and its projection area is greater than or equal to the first optical element, allowing the user to replace different vision correction lenses or glasses according to vision needs.
The module ensures that the light is fully corrected and users can clearly see digital content. The module is lightweight and easy to wear for a long time. It is compatible with different vision needs and has improved protection performance.
Smart Images
Figure CN223347136U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of smart devices, and in particular to a near-eye display module and a near-eye display device. Background Art
[0002] Smart wearable devices can realize health monitoring, exercise tracking, information reminders, voice assistants, navigation, playback control and other functions. With the development of technologies such as AR (Augmented Reality), VR (Virtual Reality), and MR (Mix Reality), head-mounted wearable devices can bring users a deeper digital experience.
[0003] In the related art, only users with normal vision can clearly see digital content in smart wearable devices, and they are not easily adapted to people with visual impairments. Utility Model Content
[0004] In view of this, the present application provides a near-eye display module and a near-eye display device to solve the problem that existing near-eye display devices are not easily adapted to people with visual impairments.
[0005] In order to solve the above technical problems, in a first aspect, the present application provides a near-eye display module, comprising:
[0006] The first shell is provided with a first through hole;
[0007] a microdisplay, disposed in the first housing and configured to generate light;
[0008] a first optical element, disposed on the light-emitting side of the microdisplay, wherein a portion of the first optical element is located in the first through hole, and configured to receive light from the microdisplay and emit the light after being reflected inside the microdisplay;
[0009] A second housing is provided with a second through hole; and
[0010] a second optical element disposed in the second housing, the first optical element being partially located in the second through hole, the second optical element being located on a light-emitting side of the first optical element, and the second optical element being configured to provide a desired vision correction;
[0011] The second shell is configured to be releasably connected to the first shell, the second shell circumferentially surrounds the first optical element, and the projection area of the second optical element in the first direction is greater than or equal to the projection area of the first optical element in the first direction.
[0012] In a second aspect, the present application further provides a near-eye display device, comprising: a frame, and a near-eye display module provided in the first aspect above, located in the frame.
[0013] Beneficial effects of the present application: The near-eye display module provided by the embodiment of the present application places the microdisplay in the first through hole of the first shell, the first optical element and the second optical element are located on the light-emitting side of the microdisplay, the light from the microdisplay first enters the first optical element and then enters the second optical element to realize the corrected light being projected to the user's eyes, the second shell is circumferentially surrounded by the first optical element, the projection area of the second optical element in the first direction is greater than or equal to the projection area of the first optical element in the first direction, ensuring that the light from the microdisplay can be fully corrected, the second shell is configured to be releasably connected to the first shell, and can allow different users to replace different second optical elements according to their own vision needs, so that users with user defects can still see the digital content from the microdisplay in full and clearly.
[0014] These and other features and advantages will be more clearly understood from the following detailed description taken in conjunction with the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technical workers in this field, other drawings can be obtained based on these drawings without creative work.
[0016] Figure 1 Schematic diagram of the overall structure of the near-eye display module provided in an embodiment of the present application;
[0017] Figure 2 Schematic diagram of the disassembled structure of the near-eye display module provided in an embodiment of the present application;
[0018] Figure 3 It is along Figure 1 Schematic cross-sectional view of the section line III-III in FIG.
[0019] Figure 4 2 is a schematic structural diagram of a second housing of a near-eye display module provided in an embodiment of the present application;
[0020] Figure 5 It is along Figure 4 Schematic cross-sectional view of the section line VV in FIG.
[0021] Figure 6 This is another overall structural diagram of the near-eye display module provided in an embodiment of the present application;
[0022] Figure 7 This is another schematic diagram of the split structure of the near-eye display module provided in an embodiment of the present application;
[0023] Figure 8 It is along Figure 6 Schematic cross-sectional view of the section line VIII-VIII in FIG.
[0024] Figure 9 yes Figure 6 A schematic structural diagram of the second shell in FIG.
[0025] Figure 10 is a schematic structural diagram of a first optical element of a near-eye display module provided in an embodiment of the present application;
[0026] Figure 11 It is a structural schematic diagram of the near-eye display device provided in an embodiment of the present application. DETAILED DESCRIPTION
[0027] The following will be combined with the accompanying drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.
[0028] The terms "first", "second" and "first" in this application are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, the features defined as "first" and "second" can explicitly or implicitly include at least one of these features. In the embodiments of the present application, all directional indications (such as up, down, left, right, front, back ...) are only used to explain the relative positional relationship, movement, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication also changes accordingly. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device that includes a series of steps or units is not limited to the steps or units listed, but optionally also includes steps or units that are not listed, or optionally also includes other steps or units inherent to these processes, methods, products or devices. The term "and / or" is used to describe a relationship between related objects, indicating that three possible relationships exist. For example, A and / or B can represent: A alone, A and B together, and B alone. A and B can be singular or plural. The character " / " generally indicates an "or" relationship between the related objects.
[0029] References herein to "embodiments" mean that a particular feature, structure, or characteristic described in connection with the embodiments may be included in at least one embodiment of the present application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute an independent or alternative embodiment that is mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, that the embodiments described herein may be combined with other embodiments.
[0030] In some application scenarios, near-eye display devices based on prisms, optical waveguides, etc. are large in size. Different users have different vision defects. Users themselves need to wear their own vision correction devices in combination with wearing such near-eye display devices, which can easily cause the overall weight to be too heavy and not suitable for long-term wear.
[0031] See Figure 1-11 The present application provides a near-eye display module 10, which includes a first shell 20, provided with a first through hole 21; a micro display 30, arranged in the first shell 20, for generating light; wherein the micro display 30 includes but is not limited to Micro-LED (Micro Light-Emitting Diode, micro light-emitting semiconductor), Micro-oled (Micro Organic Light-Emitting Diode, micro organic light-emitting diode), LCoS (Liquid Crystal On Silicon, silicon-based liquid crystal), LCD (Liquid Crystal Display, liquid crystal display), DMD (Digital Micromirror Device, digital micromirror device) / DLP (Digital Light Processing, digital light processing) or LBS (Laser Beam Scanning), etc., or any combination of these technologies.
[0032] The first optical element 40 is arranged on the light-emitting side of the microdisplay 30. Part of the first optical element 40 is located in the first through hole 21. The first optical element 40 can be fixed in the first through hole 21 by means of snap connection, threaded connection, bonding, etc. The first optical element 40 is configured to receive light from the microdisplay 30 and emit it after being reflected inside it.
[0033] The second shell 50 is provided with a second through hole 510 ; the opening area of the second through hole 510 may be greater than or equal to the opening area of the first through hole 21 , and the second through hole 510 and the first through hole 21 may be coaxially arranged.
[0034] The second optical element 60 is disposed within the second housing 50 and can be secured to the second housing 50 by snapping, bonding, or threading. The first optical element 40 is partially located within the second through-hole 510. It will be appreciated that the first optical element 40 is accommodated within both the first through-hole 21 and the second through-hole 510, effectively reducing the thickness of the first housing 20 and fully utilizing the space between the first and second housings 50, 20, thereby reducing the thickness of the overall near-eye display module 10. In other embodiments, the first optical element 40 may be completely located within the first through-hole 21, rather than within the second through-hole 510. In this case, the second through-hole 510 merely provides a light exit channel.
[0035] The second optical element 60 is positioned on the light-exiting side of the first optical element 40. The second optical element 60 is configured to provide the desired vision correction. The correction provided by the second optical element 60 can be spherical, aspheric, toroidal, cylindrical, monovision, multifocal, progressive, and / or adjustable, for example, to provide correction for specific eye or vision impairments, such as myopia, hyperopia, or color blindness. The second optical element 60 can be provided with different lenses or eyeglasses for various correction combinations. For example, each of any given lens or eyeglass can have a known type of correction parameters based on the design's identification. Corresponding identifiers, such as those based on product inventory, can be assigned for reference and ease of selection for users with different vision. Thus, different users can use the second optical element 60 with different lenses or eyeglasses, and / or no second optical element 60 containing any lenses or eyeglasses, as needed. In some embodiments, the second optical element 60 may include a concave lens, a convex lens, a convex cylindrical lens or a convex cylindrical lens with different refractive powers. The second optical element 60 can correct the vision of the light projected from the first optical element 40 so that users with visual impairments can clearly see the image content from the microdisplay 30.
[0036] In some embodiments, the second optical element 60 can provide a desired optical effect or optical crosstalk. For example, the second optical element 60 can include one or more attenuators, diffusers, filters, polarizers, prisms, beam splitters, diffraction gratings, mirrors and / or windows.
[0037] In some embodiments, for users without visual impairment, no correction is required. The second optical element 60 can use a plano lens or a zero-degree lens without refractive power, which only provides a protective function for the first optical element 40 and reduces wear and tear on the first optical element 40.
[0038] In some embodiments, the first optical element 40 and the second optical element 60 may be made of materials such as plastic, glass, and resin. Figure 10The first optical element 40 may include a base 41, a light-incoming surface 42, a first reflecting surface 43, a second reflecting surface 44 and a light-emitting surface 45, wherein the base 41 may be made of a transparent or light-transmitting material, the light-incoming surface 42 is located on the first side of the base 41; the first reflecting surface 43 is located on the second side of the base 41, and the first side and the second side are arranged opposite to each other; the second reflecting surface 44 is located on the first side, and the second reflecting surface 44 surrounds the light-incoming surface 42. The first reflecting surface 43 and the second reflecting surface 44 may be coated with a reflective film, such as a metal reflective film such as silver or aluminum; the light-emitting surface 45 is located on the second side, and the light-emitting surface Surface 45 surrounds the first reflective surface 43, the microdisplay 30 faces the light-input surface 42, and the second optical element 60 faces the light-output surface 45. The light generated by the microdisplay 30 enters from the light-input surface 42 and is projected onto the first reflective surface 43, then reflected by the first reflective surface 43 to the second reflective surface 44, and finally emitted from the light-output surface 45. The first reflective surface 43 and the second reflective surface 44 may include one or a combination of inclined planes, curved surfaces, spherical surfaces, aspherical surfaces or free-form surfaces, and the incident surface 43 and the exit surface 46 may be one or a combination of planes, curved surfaces, spherical surfaces, aspherical surfaces or free-form surfaces.
[0039] In some embodiments, the first reflecting surface 43 and the light-emitting surface 45 can be continuous surfaces, and the light-input surface 42 and the second reflecting surface 44 can be continuous surfaces. The continuous surfaces can be understood as being constructed by the same function, for example, they are all free-form surfaces constructed using the same Zernike polynomial function. In some embodiments, the surface formed by the first reflecting surface 43 and the light-emitting surface 45, and the surface formed by the light-input surface 42 and the second reflecting surface 44 are constructed by the same function, and the two can be parallel to each other. In some embodiments, the surface formed by the first reflecting surface 43 and the light-emitting surface 45, and the surface formed by the light-input surface 42 and the second reflecting surface 44 are all free-form surfaces.
[0040] In some embodiments, the light-incoming surface 42 and the first reflective surface 43 can both be circular, elliptical, or polygonal, etc. The second reflective surface 44 and the light-emitting surface 45 can be polygonal, circular, elliptical, or a closed shape formed by an arc and straight edges, etc. In some embodiments, the light-incoming surface 42 and the first reflective surface 43 are the same or similar. In some embodiments, the area of the first reflective surface 43 is greater than or equal to the light-incoming surface 42, and the area of the light-incoming surface 42 is greater than or equal to the area of the light-generating region of the microdisplay 30, thereby ensuring that light from the microdisplay 30 can fully enter and be fully reflected before being emitted from the light-emitting surface 45. For other configurations of the first optical element 40, reference can be made to the descriptions of the related embodiments of the prior applications with Chinese application numbers 2024205421010, 2023115809662, and 2023115822046.
[0041] Wherein, the second shell 50 is configured to be releasably connected to the first shell 20, and the releasability can be to provide one or more mechanisms of various mechanisms to fix the parts to each other. For example, it can include mechanisms such as locks, latches, snaps, slides, channels, screws, buckles, threads, magnets, pins, interference (e.g., friction) fits, rollers, bayonets, fused materials, fabrics, knits, braids, hook-and-loop fasteners and / or combinations thereof to couple the second shell 50 and / or fix the first shell 20 together. The second shell 50 and the first shell 20 can remain fixed to each other until an optional release mechanism is actuated, such as an active operation such as squeezing, pressing, rotating, sleeved, snapping or buckling by the user. In some embodiments, there is, for example, a portion between the first shell 20 and the second shell 50. Figure 1 、 3 , Figure 6 、 8 In the closed connection state of the example, in other embodiments, the first shell 20 and the second shell 50 can be separated separately, wherein the second optical element 60 can remain fixed on the second shell 50, thereby allowing the second shell 50 containing the second optical element 60 with different vision correction to be replaced according to users with different vision.
[0042] The second shell 50 is circumferentially surrounded by the first optical element 40. The second shell 50 can cover the entire portion of the first optical element 40 exposed relative to the first shell 20. The projection area of the second optical element 60 in the first direction A is greater than or equal to the projection area A of the first optical element 40 in the first direction, wherein the first direction A can be the light emitting direction or the optical axis direction of the microdisplay 30. For example, as shown in the example of the dotted line A with an arrow in the figure, it can be understood that in the first direction A, the area of the second optical element 60 is greater than or equal to the area of the first optical element 40, so that all the light from the first optical element 40 can be projected onto the second optical element 60 and then received by the user.
[0043] The near-eye display module 10 provided in the embodiment of the present application places the microdisplay 30 in the first through hole 21 of the first shell 20, and the first optical element 40 and the second optical element 60 are located on the light-emitting side of the microdisplay 30. The light from the microdisplay 30 first enters the first optical element 40 and then enters the second optical element 60 to project the corrected light to the user's eyes. The second shell 50 is circumferentially surrounded by the first optical element 40, and the projection area of the second optical element 6 in the first direction is greater than or equal to the projection area of the first optical element 40 in the first direction, ensuring that the light from the microdisplay 30 can be fully corrected. The second shell 50 is configured to be releasably connected to the first shell 20, allowing different users to replace different second optical elements 60 according to their own vision needs, so that users with user defects can still see the digital content from the microdisplay 30 in full and clearly.
[0044] In some embodiments, the projection area of the second optical element 60 in the first direction A is 15 mm 2 -45 mm 2 (square millimeters), for example 15mm 2 , 17mm 2 , 19mm 2 , 20mm 2 , 36mm 2 , 40mm 2 , 45mm 2 The projection area of the first optical element 40 in the first direction A is 10 mm. 2 -20mm 2 , for example 10mm 2 , 12mm 2 , 14mm 2 , 17mm 2 , 19mm 2 , 20mm 2 It can be understood that the projection area of the second optical element 60 needs to always be greater than or equal to the projection area of the first optical element 40.
[0045] In some embodiments, the projection area of the first shell 20 and the second shell 50 in the first direction A is not greater than 60 mm. 2 It can be understood that, for example, the projection area of the first shell 20 and the second shell 50 can be 50mm respectively. 2 , 54mm 2 , 55mm 2 , 60mm 2 In some embodiments, for example Figure 1-3 , the projection area of the second shell 50 in the first direction A is larger than the projection area of the second shell 20; in other embodiments, for example Figure 6-9 As shown, the projected area of the second housing 50 in the first direction A is larger than the projected area of the first optical element 40 but smaller than the projected area of the first housing 20. The smaller projected areas of the first and second housings 20, 50 result in smaller volume and weight, making it easier to integrate them into the near-eye display device 100. Compared to existing near-eye devices such as AR or VR, the module and device of the present application are lighter in overall volume and weight, making them easier for users to wear for extended periods of time. Furthermore, they can be cleverly integrated with existing myopia glasses, hyperopia glasses, sunglasses, protective glasses, or smart glasses, without causing excessive weight and size, and without being too obtrusive in appearance or affecting the user's normal field of vision.
[0046] Since the first shell 20, the second shell 50, the first optical element 40 and the second optical element 60 can be circular, elliptical or various other shapes, the above-mentioned example projection area parameters are only accurate to the integer digit. In fact, there may be decimal places due to shape design or calculation factors such as π, but they should all be included in the above-mentioned parameter range.
[0047] In some application scenarios, rain, sweat, dust, or small debris can easily enter the optical module or micro display, causing damage to the near-eye display device. Figure 3 、 8 When the second shell 50 is connected to the first shell 20, that is, when the second shell 50 is fixed to the first shell 20, the first shell 20 and the second shell 50 are sealed and connected, and the micro display 30 and the first optical element 40 are physically isolated from the external environment. It can be understood that the sealed connection can effectively prevent water or debris in the external environment from entering the first optical element 40 as a precision component and / or the micro display 30 as an electrical component, allowing the near-eye display module 10 to be used in a more complex environment, effectively improving the use scenario of the near-eye display module 10 and reducing damage to internal devices.
[0048] In some embodiments, the material of the first housing 20 and the material of the second housing 50 are at least partially different. For example, the hardness (rigidity) of the first housing 20 is greater than the hardness (rigidity) of the second housing 50. The first housing 20 can be made of metal, plastic, etc., and the second housing 50 can be made of an elastic or flexible material, such as silicone, rubber, or elastic plastic. The first housing 20 and the second housing 50 are configured to be elastically connected. In other embodiments, the hardness of a portion of the first housing 20 can be greater than the hardness of a portion of the second housing 50, and this portion can be the portion where the two are in contact with each other. The first shell 20 and the second shell 50 can be elastically sleeved; in other embodiments, the first shell 20 and the second shell 50 can also be elastically clamped, that is, the second shell 50 clamps the first shell 20, causing the first shell 20 or the second shell 50 to be at least partially deformed or elastically deformed; or when the two are threadedly connected, the first shell 20 or the second shell 50 is at least partially deformed or elastically deformed. In other embodiments, for example, the elastic ring 25 (or silicone ring, etc.) can be located in the gap of the clamping or threaded connection, or the end of the second shell 50 can abut against the soft plate 26 (or elastic plate or silicone plate).
[0049] In some embodiments, in conjunction with Figure 2 、 3, 7, 8 and 10, the first optical element 40 may further include a flange 46, the flange 46 is located in the circumference of the base 41, for example, is arranged in the circumference close to the light-emitting surface 45, the flange 46 is protruded relative to the outer periphery of the second reflective surface 44 to form a step shape, in some embodiments, the raised flange 46 can be arranged at intervals in the circumference or a complete circle, a support seat 211 is provided in the circumference of the first through hole 21, the support seat 211 is in contact with the flange 46, in some embodiments, the flange 46 can be bonded to the support seat 211 by optical glue, etc., in some embodiments, the side wall of the base 41 away from the flange 46 is provided with an external thread, the inner wall of the support seat 211 is provided with an internal thread, and the first optical element 40 is threadedly connected to the first through hole 21, wherein the flange 46 can ensure that there is a gap between the first optical element 40 and the micro display 30, thereby reducing the probability of the first optical element 40 transitioning and contacting the micro display 30 during installation and causing damage to it.
[0050] In some embodiments, the first housing 20 is provided with a first connecting portion 22, which surrounds the first through hole 21. The second housing 50 is provided with a second connecting portion 52 on a circumferential side away from the second optical element 60. The first connecting portion 22 and the second connecting portion 52 are made of different materials. For example, the first connecting portion and the second housing 50 are configured to be sealed and connected to the first housing 20 through the first connecting portion 22 and the second connecting portion 52. Figure 2-5 The hardness of the first connecting portion 22 is greater than that of the second connecting portion 52. The first connecting portion 22 can be made of plastic, metal, etc., and the second connecting portion 52 can be made of elastic materials such as silicone and rubber. The first connecting portion 22 and the second connecting portion 52 can include a snap connection or a threaded connection. In some embodiments, refer to Figure 7-9 The first connection part 22 and the second connection part 52 are threadedly connected, wherein the elastic ring is located in the space where the first connection part 22 and the second connection part 52 are sealed. The connection of the first connection part 22 and the second connection part 52 made of different materials can improve the sealing of the fixed connection, reduce the entry of water or debris into the internal space, and effectively improve the overall waterproof performance.
[0051] In some embodiments, in conjunction with Figure 1-5The projection area of the second shell 50 in the first direction is greater than the projection area of the first shell 20 in the first direction. The first direction can be the direction of the line A with an arrow in the figure. The outer contour shape of the first shell 20 and the outer contour shape of the second shell 50 can be the same or similar. At least one of the first connecting part 22 and the second connecting part 52 includes an elastic material. For example, the second connecting part 52 includes an elastic material such as rubber or silicone. The hardness (strength, rigidity) of the first connecting part 22 is greater than that of the second connecting part 52. The first connecting part 22 includes one of a protrusion or a groove, and the second connecting part 52 includes the other of a protrusion or a groove. The two are engaged with each other to achieve a sealed connection. The second shell 50 seals the first optical element 40 in the entire circumference, thereby reducing the probability of foreign matter such as water entering the interior and causing damage to the micro display 30.
[0052] In some embodiments, continuing as Figure 1-5 The second shell 50 may include a supporting wall 51, an upper wall 53 extending toward a first side of the supporting wall 51, and a lower wall 54 extending away from the first side. The upper wall 53 and the lower wall 54 are respectively arranged along the circumference of the supporting wall 51. The supporting wall 51 is provided with a second through hole 510. The supporting wall 51 is solid except for the second through hole 510. The second optical element 60 is provided in a first space 511 formed by the supporting wall 51 and the upper wall 53. The second optical element 60 can be fixed in the first space 511 by means of snapping or bonding, for example, supported by the supporting wall 51. In some embodiments, the upper wall 53 is formed with a groove 55. The entire second shell 50 is made of elastic material, so that the second optical element 60 can be snapped into the groove 55 of the elastic upper wall 53. The material of the upper wall 53 is elastic, and the elasticity (rigidity or hardness) of the second optical element 60 is greater than that of the upper wall 53. Therefore, this clamping method can effectively reduce the entry of water and the like into the second space 512 through the connection of the second optical element 60. The second connecting portion 52 is arranged in the second space 513 formed by the support wall 51 and the lower wall 54. The second connecting portion 52 is a groove and is located on the side away from the second optical element 60. The depth of the first space 511 is less than or equal to the depth of the second space 512, ensuring that the exposed portion of the first optical element 40 relative to the first through hole 21 can be completely accommodated in the second space 512 and the second through hole 510. It can be understood that the overall thickness of the second shell 50 after being installed on the first shell 20 is further reduced.
[0053] In some embodiments, in conjunction with Figure 6-10 The projection area of the second shell 50 in the first direction is smaller than the projection area of the first shell 20 in the first direction. In the first direction A, the outer contour shape of the first shell 20 and the outer contour shape of the second shell 50 can be different. For example, the outer contour of the first shell 20 can be rectangular, elliptical, or a quadrilateral with rounded corners, and the second shell 50 can be circular, elliptical, or Figure 9 As shown, the area of the support wall 51 in the embodiment of the present application is significantly smaller than that of the above Figure 5 and 6 The area of the support wall 51 in the first housing 20 is determined by the elastic ring 25. The elastic ring 25 can be made of an elastic material such as rubber or silicone. The elastic ring 25 is located between the support seat 211 and the inner wall of the second housing 50. The first connecting portion 22 and the second connecting portion 52 are threadedly connected. The elastic ring 25 is configured to at least partially deform when the first housing 20 and the second housing 50 are threadedly connected. That is, when the first housing 20 and the second housing 50 are tightened by the threaded connection, the elastic ring 25 is further squeezed, thereby sealing the gap created by the threaded connection between the first housing 20 and the second housing 50, thereby effectively reducing the entry of water and the like into the second through hole 510 through this connection. When a different second optical element 60 needs to be replaced, the elastic second housing 50 can be removed and replaced with a second housing 50 containing a different vision correction second optical element 60. In some embodiments, different second optical elements 60 can also be replaced by being inserted into the groove of the first space 511 as needed.
[0054] In some embodiments, continuing as Figure 6-9 , a soft plate 26 is provided on the first shell 20, and the soft plate 26 surrounds the support seat 211. The soft plate 26 can be made of elastic material such as rubber or silicone. The outer contour shape of the soft plate 26 can be the same or similar to the outer contour shape of the first shell 20, for example, a quadrilateral. The soft plate 26 is configured to be at least partially deformed when the first shell 20 and the second shell 50 are threadedly connected. It can be understood that the first connecting portion 22 and the second connecting portion 52 are threadedly connected, for example, the first connecting portion 22 on the support seat 22 of the first shell 20 includes an external thread, and the second connecting portion 50 of the second shell 50 includes an external thread. The portion 52 includes an internal thread. When the second shell 50 and the first shell 20 are connected by threads, since the soft board 26 surrounds the support seat 211, the material strength of the first shell 20 and the second shell 50 is greater than that of the elastic ring 25 and the soft board 26. As the second shell 50 is continuously tightened, the end away from the second optical element 60 can be squeezed into the elastic soft board 26, thereby making the second shell 50 and the first shell 20 sealed, further reducing the entry of water and the like into the interior of the second shell 50, providing effective sealing protection, and reducing the probability of damage to the micro display 30.
[0055] In some embodiments, the elastic ring 25 and the soft plate 26 are made of the same material and can be disposed on the first housing 20 using a two-stage injection molding process. For example, the soft plate 26 can be injection molded on the end surface of the upper cover 23 facing away from the lower cover 24, and the elastic ring 25 can be injection molded around the annular support seat 211. The material hardness of the first housing 20 can be greater than that of the elastic ring 25 and the soft plate 26. When a different second optical element 60 needs to be replaced, the second housing 50 containing the different vision correction second optical element 60 can be screwed out and replaced. In other embodiments, only different types of second optical elements 60 can be replaced. In another embodiment, other methods, such as snap-on connections, are also feasible.
[0056] In some embodiments, continuing as Figure 1-3 6-8, the first housing 20 includes an upper cover 23 and a lower cover 24. The microdisplay 30 is located in the space formed by the upper cover 23 and the lower cover 24. The upper cover 23 and / or the lower cover 24 may be provided with fixing holes 241, and the upper cover 23 and the lower cover 24 may be fixed using fixing members 242 such as bolts and screws. The upper cover 23 is provided with a first through hole 21, and the lower cover 24 is provided with an adjustment portion 70 on a side facing away from the first through hole 21. The adjustment portion 70 is configured to be rotatably connected to the frame 101 and to adjust the angle of light emitted by the microdisplay 30 through the second optical element 60. The adjustment portion is also configured to be rotatably connected to the frame 101 and to adjust the horizontal position of light emitted by the microdisplay 30 through the second optical element 60. The adjustment portion 70 may include an arc shape, a cylindrical shape, or a spherical shape, thereby allowing it to rotate on the frame 101, thereby allowing the light output angle of the near-eye display module 10 to be adjusted, that is, the angle projected to the user's eyes on the near-eye side 102. The adjustment portion 70 also extends laterally along the lower cover 24, that is, the adjustment portion 70 may have a certain lateral length, thereby allowing the second shell 20 to move laterally as a whole relative to the frame 101, and thereby adjusting the lateral light output position of the near-eye display module 10 relative to the user's eyes on the near-eye side 102, thereby satisfying the adjustment of users with different pupil distances to achieve pupil-adaptive viewing.
[0057] In some embodiments, see Figure 1-3 , 6-8, the microdisplay 30 may further include a flexible circuit board 31, which at least partially leaks out relative to the upper cover 23 and the lower cover 24 and is electrically connected to the circuit board 32. The circuit board 32 may be a drive board or a cache board for realizing the microdisplay 30. For example, there is a wire hole 230 between the upper cover 23 and the lower cover 24. In some embodiments, the wire holes of the upper cover 23 and the lower cover 24 may be completely sealed and only allow the flexible circuit board 31 to leak out relative to each other, thereby further reducing the entry of water and the like into the microdisplay 30. The flexible circuit board 31 may also be replaced with an electrical connection method of metal contacts. In some embodiments, the circuit board 32 may be part of the near-eye display module 10. In other embodiments, the circuit board 32 may be part of the near-eye display device 100.
[0058] See also Figure 11 The embodiments of the present application further provide a near-eye display device 100, comprising a frame 101 and a near-eye display module 10 as described in the above embodiments, located on the frame 101. A first side of the frame 101 is a world side 103, and a second side of the frame 101 opposite to the first side is a near-eye side 102. The user's eye is located on the near-eye side 102, and light projected by the near-eye display module 10 is directed toward the near-eye side 102. In some embodiments, the near-eye display device 100 may further comprise a lens 105 disposed on the frame 101. The lens 105 may be detachably connected to the frame 101 to allow the user to replace lenses with different vision corrections. Of course, the lens 105 may also be fixedly connected to the frame 101 and not be allowed to be removed by the user. The temple 104 is connected to the frame 101, and the near-eye display module 10 can be set as a single one or as two. Additional electrical components such as batteries or circuit boards (such as control boards, etc.) can be located on the temple 104, and the microdisplay 30 is electrically connected to the electrical components of the temple 104 through the flexible circuit board 31.
[0059] In some embodiments, the lens 105 may be a plain lens, a sun lens, or a protective lens. In other embodiments, the lens 105 may be a lens with vision correction, such as a lens for correcting specific eyes or people with vision defects such as myopia, hyperopia, color blindness, etc. The lens 105 may be spherical, aspheric, toroidal, cylindrical, single-vision, multifocal, progressive, and / or adjustable. The second optical element 60 may include a lens with a first refractive power, and the lens 105 may include a lens with a second refractive power. In some application scenarios, such as for people with myopia, since the position of the microdisplay 30 is closer to the human eye, considering the human eye's own adjustment ability, users wear this near-eye display device 100 and often use it outdoors to watch scenes at a longer distance. The parameters of the first refractive power may be different from the parameters of the second refractive power, for example, the first refractive power is smaller than the second refractive power. In other embodiments, users can adjust the first diopter parameter to be greater than the second diopter parameter, or to be equal to the second diopter parameter, based on their needs. In some embodiments, the projection area of the near-eye display module 10 does not overlap with the lens 105 in the direction from the near-eye side 102 to the world side 103, thereby reducing interference of the near-eye display module 10 with the normal field of view of the lens 105.
[0060] It can be understood that the near-eye display device 100 should also include, for example, interactive buttons, charging interfaces, etc., which can be set at positions such as the temples 104 or the frame 101, and will not be repeated here.
[0061] The near-eye display module and device provided in the present application can ensure that the user can clearly see the light projected from the micro display 30 through the first optical element 40 and the second optical element 60 by releasably installing a second optical element with vision correction, thereby meeting the needs of users with vision impairments. The sealed connection of different materials effectively improves the waterproof performance and enhances the application scenarios of the product. In addition, the overall size of the first shell 20 and the second shell 50 is smaller, and the weight of the entire module is lighter, which is conducive to long-term use by users, and allows users to adjust according to their own angles and pupil distance needs, making it compatible with more users.
[0062] The above description is only an implementation method of the present application and does not limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made using the contents of the description and drawings of this application, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present application.
Claims
1. A near-eye display module (10), characterized in that: include: A first housing (20) is provided with a first through hole (21); a microdisplay (30), disposed in the first housing (20), and configured to generate light; a first optical element (40) disposed on the light-emitting side of the microdisplay (30), wherein a portion of the first optical element (40) is located in the first through hole (21), and the first optical element (40) is configured to receive light from the microdisplay (30) and emit light after being reflected inside the microdisplay (30); A second housing (50) is provided with a second through hole (510); as well as a second optical element (60) disposed in the second housing (50), wherein the first optical element (40) is partially located in the second through hole (510), the second optical element (60) is located on the light-emitting side of the first optical element (40), and the second optical element (60) is configured to provide desired vision correction; The second shell (50) is configured to be releasably connected to the first shell (20), the second shell (50) circumferentially surrounds the first optical element (40), and the projection area of the second optical element (60) in the first direction is greater than or equal to the projection area of the first optical element (40) in the first direction.
2. The near-eye display module (10) according to claim 1, characterized in that When the second shell (50) is connected to the first shell (20), the first shell (20) and the second shell (50) are sealed and physically isolate the micro display (30) and the first optical element (40) from the external environment. The projection area of the second optical element (60) in the first direction is 15 mm. 2 -45 mm 2 The projection area of the first optical element (40) in the first direction is 10 mm 2 -20mm 2 .
3. The near-eye display module (10) according to claim 1, characterized in that: The material of the first shell (20) and the material of the second shell (50) are at least partially different, the first shell (20) and the second shell (50) are configured to be elastically connected, and the projected areas of the first shell (20) and the second shell (50) in the first direction are each no greater than 60 mm. 2 .
4. The near-eye display module (10) according to claim 1, characterized in that The first optical element (40) comprises: matrix (41); The flange (46) is located in the circumference of the base (41), and a support seat (211) is provided in the circumference of the first through hole (21). The support seat (211) abuts against the flange (46), and there is a gap between the first optical element (40) and the micro display (30).
5. The near-eye display module (10) according to claim 4, characterized in that: The first shell (20) is provided with a first connecting portion (22), and the first connecting portion (22) surrounds the first through hole (21). The second shell (50) is circumferentially provided with a second connecting portion (52) on a side away from the second optical element (60). The first connecting portion (22) and the second connecting portion (52) are made of different materials. The second shell (50) is configured to be sealed and connected to the first shell (20) through the first connecting portion (22) and the second connecting portion (52).
6. The near-eye display module (10) according to claim 5, characterized in that: The projection area of the second shell (50) in the first direction is larger than the projection area of the first shell (20) in the first direction, at least one of the first connecting portion (22) and the second connecting portion (52) comprises an elastic material, the first connecting portion (22) comprises a protrusion or a groove, and the second connecting portion (52) comprises the other of the protrusion or the groove.
7. The near-eye display module (10) according to claim 5, characterized in that: The second shell (50) includes a supporting wall (51), an upper wall (53) extending toward a first side of the supporting wall (51), and a lower wall (54) extending away from the first side; the supporting wall (51) is provided with a second through hole (510); the second optical element (60) is arranged in a first space (511) formed by the supporting wall (51) and the upper wall (53); the second connecting portion (52) is arranged in a second space (513) formed by the supporting wall (51) and the lower wall (54); the depth of the first space (511) is less than or equal to the depth of the second space (512).
8. The near-eye display module (10) according to claim 5, characterized in that: The projection area of the second shell (50) in the first direction is smaller than the projection area of the first shell (20) in the first direction. The first shell (20) is provided with an elastic ring (25). The elastic ring (25) is located between the support seat (211) and the inner wall of the second shell (50). The first connecting portion (22) and the second connecting portion (52) are threadedly connected. The elastic ring (25) is configured to at least partially deform when the first shell (20) and the second shell (50) are threadedly connected.
9. The near-eye display module (10) according to claim 8, characterized in that: A soft plate (26) is provided on the first shell (20), the soft plate (26) surrounds the support seat (211), and the soft plate (26) is configured to at least partially deform when the first shell (20) and the second shell (50) are threadedly connected.
10. The near-eye display module (10) according to claim 4, characterized in that: The first shell (20) includes an upper cover (23) and a lower cover (24), the micro display (30) is located in a space formed by the upper cover (23) and the lower cover (24), the upper cover (23) is provided with the first through hole (21), and the lower cover (24) is provided with an adjustment portion (70) on a side away from the first through hole (21), the adjustment portion (70) is configured to be rotatably connected to the frame (101) and to adjust the angle of light emitted by the micro display (30) via the second optical element (60), and the adjustment portion is also configured to be rotatably connected to the frame (101) and to adjust the horizontal light emission position of the micro display (30) via the second optical element (60).
11. The near-eye display module (10) according to claim 10, characterized in that: The micro display (30) further includes a flexible circuit board (31), wherein at least a portion of the flexible circuit board (31) is exposed relative to the upper cover (23) and the lower cover (24) and is electrically connected to the circuit board (32). The first optical element (40) further comprises: a light-incoming surface (42) located on a first side of the base (41); a first reflecting surface (43) located on a second side of the base (41), the first side and the second side being arranged opposite to each other; a second reflecting surface (44), located on the first side, the second reflecting surface (44) surrounding the light incident surface (42); and a light emitting surface (45) located on the second side, the light emitting surface (45) surrounding the first reflecting surface (43), the microdisplay (30) facing the light incident surface (42), and the second optical element (60) facing the light emitting surface (45); The adjusting portion (70) comprises an arc shape, and the adjusting portion (70) extends laterally along the lower cover (24).
12. A near-eye display device (100), characterized in that include: A near-eye display module (10) as described in any one of claims 1 to 11, wherein the frame (101) is located.