Lens assembly and head-mounted display device

Abstract

The present application provides a lens assembly and a head-mounted display device. The lens assembly includes a bracket and at least one lens body. The at least one lens body is supported by the bracket and each lens body includes at least two lenses, including a first lens and a second lens. The first lens has a first refractive power; the second lens has a second refractive power. The first lens and the second lens are arranged in a stepped manner, and the first refractive power is different from the second refractive power.

Description

Technical Field

[0001] The present application relates to the field of smart wearable technology, and in particular to a lens assembly and a head-mounted display device. Background Art

[0002] With the development of smart technology, head-mounted display devices have gained more and more favor among consumers. Different head-mounted display devices can achieve different effects such as virtual reality (VR), augmented reality (AR), and mixed reality (MR) due to their different optical solutions and other related solutions. The optical solution of some AR glasses adopts Birdbath optical design, which usually sets an inclined flat lens close to the side of the human eye. When a user with ametropia wears the AR glasses, it is necessary to use a separate myopia lens, hyperopia lens or astigmatism lens with refractive power that matches the user's vision. These vision correction lenses are located on the side of the AR glasses close to the user, which will cause a large gap between the vision correction lens and the flat lens of the AR glasses, which will not only affect the appearance and wearing comfort, but also make it impossible for the user to bring the AR glasses as close to the eyes as possible to obtain a larger visual range. Summary of the Invention

[0003] In response to the above-mentioned technical problems existing in the prior art, the present application provides a lens assembly and a head-mounted display device.

[0004] A lens assembly according to an embodiment of the present application includes:

[0005] Bracket: and

[0006] At least one mirror body, the at least one mirror body is supported by the bracket and each mirror body includes at least two lenses, and the at least two lenses include:

[0007] a first lens having a first refractive power; and

[0008] The second lens has a second refractive power, the first lens and the second lens are arranged in a stepped manner, and the first refractive power is different from the second refractive power.

[0009] A head-mounted display device according to an embodiment of the present application includes:

[0010] An optical imaging system, comprising an optical component and an image source component for providing image light passing through the optical component;

[0011] a housing for supporting the optical assembly; and

[0012] The above-mentioned lens assembly is connected to the housing and cooperates with the optical assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In the drawings, which are not necessarily drawn to scale, the same reference numerals may describe similar components in different views. The same reference numerals with letter suffixes or different letter suffixes may represent different instances of similar components. The accompanying drawings generally illustrate various embodiments by way of example and not limitation, and together with the description and claims, serve to illustrate the disclosed embodiments. Where appropriate, the same reference numerals are used throughout the drawings to refer to the same or similar parts. Such embodiments are illustrative and are not intended to be exhaustive or exclusive of the embodiments of the present apparatus or method.

[0014] Figure 1 This is a schematic structural diagram of a lens assembly according to an embodiment of the present application;

[0015] Figure 2 This is an exploded view of the lens assembly according to an embodiment of the present application;

[0016] Figure 3 A schematic structural diagram of a lens body of a lens assembly according to an embodiment of the present application;

[0017] Figure 4 This is another schematic structural diagram of the lens body of the lens assembly according to an embodiment of the present application;

[0018] Figure 5 This is a schematic diagram of the structure of the lens assembly after the lens body is packaged according to an embodiment of the present application;

[0019] Figure 6 This is a simplified structural diagram of the optical imaging system of the head-mounted display device according to an embodiment of the present application;

[0020] Figure 7 This is an exploded view of the head-mounted display device according to an embodiment of the present application.

[0021] The components indicated by the reference numerals in the figures are:

[0022] 1-bracket; 11-step portion; 2-mirror body; 21-first mirror body; 22-second mirror body; 23-packaged flat mirror; 3-first lens; 31, 32, 33, 34-first sub-lens; 4-second lens; 41, 42-second sub-lens; 5-optical imaging system; 51-image source assembly; 52-first optical element; 53-second optical element; 6-housing; 7-first magnetic part; 9-assembly portion. DETAILED DESCRIPTION

[0023] In order to enable those skilled in the art to better understand the technical solution of the present application, the present application is described in detail below in conjunction with the accompanying drawings and specific embodiments. The embodiments of the present application are further described in detail below in conjunction with the accompanying drawings and specific embodiments, but are not intended to limit the present application.

[0024] The terms "first," "second," and similar terms used in this application do not indicate any order, quantity, or importance, but are merely used to distinguish different parts. Terms such as "include" or "comprises" mean that the elements preceding the term encompass the elements listed after the term, and do not exclude the possibility of also encompassing other elements. Terms such as "upper," "lower," "left," and "right" are only used to indicate relative positional relationships. When the absolute position of the object being described changes, the relative positional relationship may also change accordingly.

[0025] In this application, when a specific device is described as being located between a first device and a second device, an intervening device may or may not be present between the specific device and the first device or the second device. When a specific device is described as being connected to another device, the specific device may be directly connected to the other device without an intervening device, or may be not directly connected to the other device but with an intervening device.

[0026] All terms (including technical or scientific terms) used in this application have the same meaning as those understood by ordinary technicians in the field to which this application belongs, unless otherwise specifically defined. It should also be understood that terms defined in general dictionaries should be interpreted as having the meaning consistent with their meaning in the context of the relevant technology, and should not be interpreted in an idealized or highly formal sense, unless explicitly defined herein.

[0027] Technologies, methods, and equipment known to ordinary technicians in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and equipment should be considered part of the specification.

[0028] If a user with ametropia uses a head-mounted display device such as AR glasses or VR glasses, they need vision correction lenses to correct their vision, which makes the user's wearing experience poor when using the head-mounted display device. To solve the above problem, there is currently a solution to set the vision correction lenses on the head-mounted display device. However, since some head-mounted display devices (such as AR glasses) are provided with a flat plate on the side close to the human eye, the flat plate is tilted, which will cause a large gap between the vision correction lens and the flat plate. This gap prevents the user's glasses from being as close to the AR glasses as possible, making it difficult for the user to obtain a larger visual range, and there is still a problem of poor wearing comfort.

[0029] The embodiment of the present application provides a lens assembly, such as Figure 1 and Figure 2 As shown, the lens assembly includes a bracket 1 and at least one lens body 2, the at least one lens body 2 is supported by the bracket 1 and each lens body 2 includes at least two lenses, the at least two lenses include a first lens 3 and a second lens 4 (as shown in FIG. Figure 3). The first lens 3 has a first refractive power, and the second lens 4 has a second refractive power. The first lens 3 and the second lens 4 are arranged in a stepped manner, and the first refractive power is different from the second refractive power.

[0030] For example, the second lens 4 is arranged downstream of the first lens 3 along a first direction that is the same as the main optical axis direction of the first lens 3 or the second lens 4, the first lens 3 and the second lens 4 are arranged sequentially along a second direction perpendicular to the first direction, and the first refractive power is smaller than the second refractive power.

[0031] First of all, it should be noted that the directional words such as left and right, up and down, etc. mentioned below can be based on the orientation of the lens assembly itself, or can be based on the orientation of the user's head when the user wears the above-mentioned lens assembly. For example, the user's eyes are located above the nose, and the left eye is located to the left of the nose. When a user wears glasses or the above-mentioned lens assembly, the relative position relationship between the various structural components of the lens assembly can be described with reference to the user's head as the reference orientation to clearly and concisely illustrate the embodiments of the present application. The stepped arrangement described in this application refers to the stepped arrangement of the lenses along the same reverse direction.

[0032] Optionally, one mirror body 2, two mirror bodies 2 or multiple mirror bodies 2 may be provided on the bracket 1. For example, Figure 1 and Figure 2 The bracket 1 shown in FIG. is provided with two mirror bodies 2 arranged on the left and right to adapt to the two eyes of the human body. Of course, the bracket 1 described above can also be provided with a single mirror body 2. In the embodiment in which a single mirror body 2 is provided, the single mirror body 2 can include two parts to adapt to the two eyes of the human body. The product composed of a single mirror body 2 and a bracket 1 can be replaced according to the usage scenario of the AR glasses using the above-mentioned lens assembly, which provides good flexibility.

[0033] Optionally, each lens body 2 includes at least two lenses, for example, two, three, or more lenses. For example, the lenses are concave lenses used to correct myopia, each lens including a first surface and a second surface disposed opposite each other, with the first surface being concave. The principal optical axis and the first direction described herein refer to the direction from the second surface toward the first surface. When a user wears the lens assembly, the first surface is closer to the eye than the second surface. When a user wears the lens assembly, the principal optical axis of the first or second lens is directed toward the eye. The second lens 4 is positioned downstream of the first lens 3 along the first direction. For example, when a user wears the lens assembly with their head upright, the first direction is approximately parallel to the horizontal plane, and the second lens 4 is positioned closer to the eye relative to the first lens 3. The second direction is perpendicular to the first direction and can also be directional. For example, when the user wears the lens assembly with their head upright, the second direction is perpendicular to the horizontal plane and directed from bottom to top, with the second lens 4 positioned closer to the user's forehead relative to the first lens 3. It is understandable that when the user wears the lens assembly with the head in a non-upright state, the directions of the first direction and the second direction relative to the horizontal plane also change accordingly.

[0034] For example, when a user wears the lens assembly, the principal optical axis of the lens directly facing the user's eye is oriented in the same direction as the first direction described above. For example, when the user wears the lens assembly with their head upright, the principal optical axis of the lens directly facing the user's eye can be approximately parallel to the horizontal direction and directed toward the user's eye. The refractive power of the lens is configured to match the refractive power of the human eye to correct the user's vision, enabling users with ametropia to obtain a clear display effect. The principal optical axis direction of the lens not directly facing the user's eye can be arranged based on the number of lenses, their placement, and the type of lenses.

[0035] Combine Figure 3 , shows an embodiment of two lenses, which are the above-mentioned first lens 3 and the second lens 4. The above-mentioned second lens 4 is a lens arranged directly facing the human eye, and its second refractive power should be a degree that can correct the user's vision. The first lens 3 is farther away from the human eye than the second lens 4. In order to achieve the purpose of correcting the user's vision so that the user can obtain a complete and clear display effect, the first refractive power of the above-mentioned first lens 3 is smaller than the second refractive power. Of course, when the user wears the lens assembly, if the lens facing the human eye is the first lens 3, the direction of the main optical axis of the first lens 3 is the same as the above-mentioned first direction, and the first refractive power of the first lens 3 should be a degree that can correct the user's vision. The second lens 4 is closer to the human eye than the first lens 3, and the second refractive power should be greater than the first refractive power, so as to correct the vision and achieve clear display. In this example, the size of the first lens 3 can be larger than Figure 3The second lens 4 may be larger than that shown in FIG. Figure 3 The lens shown in the figure is smaller, so that when the user wears the lens assembly, the lens directly facing the human eye is the first lens 3. By designing the relative positions of the first lens 3 and the second lens 4 and the degrees of the first and second diopters, the distance between the lens assembly and the flat plate of the AR glasses can be reduced, allowing the user to obtain a larger visual range and improving user comfort during use.

[0036] Combine Figure 1 and Figure 2 As shown, an embodiment of three lenses is shown. It can be understood that the second lens includes two sub-lenses, namely the second sub-lens 41 and the second sub-lens 42. The three lenses are arranged in a stepped manner, and the steps extend in one direction. In this example, the first lens 3, the second sub-lens 41 and the second sub-lens 42 are arranged in sequence from upstream to downstream along the first direction, and the first lens 3, the second sub-lens 41 and the second sub-lens 42 are also arranged in sequence along the second direction to form a step. The three lenses have different refractive powers. Continue to combine Figure 1 and 2 The first lens 3, the second lens 41, and the second lens 42 are all arranged vertically. The second lens 41 is a lens that is arranged directly facing the human eye, and its refractive power should be a degree that can correct the user's vision. The distance between the second lens 42 and the human eye is closer than that between the second lens 41 and the human eye, and the distance between the first lens 3 and the human eye is farther than that between the second lens 41 and the human eye. In order to correct the user's vision so that the user can obtain a complete and clear display effect, the refractive power of the second lens 42, the refractive power of the second lens 41, and the refractive power of the second lens 42 are arranged in descending order to achieve the purpose of correcting vision and thus clear display.

[0037] The first lens 3, second lens 41, and second lens 42 can each be derived from different portions of three lenses with different diopters, as long as they provide the user with a clear display. This disclosure does not impose any specific limitations on this. For example, the first lens 3 can be derived from the bottom of a low-diopter lens, the second lens 41 from the middle of a medium-diopter lens, and the second lens 42 from the top of a high-diopter lens. Optionally, the medium diopter is a diopter tailored to the user, with the low diopter being smaller than the medium diopter and the high diopter being larger than the medium diopter.

[0038] Of course, the embodiment of three lenses can also be understood as the first lens including two sub-lenses, the second lens being a single lens, and the two first sub-lenses and the second lens being arranged in a stepped shape according to the above embodiment.

[0039] Combine Figure 4As shown, an embodiment of five lenses is shown. It can be understood that the first lens 3 includes four sub-lenses, namely four first sub-lenses 31, 32, 32 and 34, and the second lens 4 is a single lens. The above five lenses are arranged in a stepped manner, and the steps extend in one direction. In this example, the four first sub-lenses 31, 32, 32 and 34 and the second lens 4 are arranged in sequence from upstream to downstream along the first direction, and the four first sub-lenses 31, 32, 32 and 34 and the second lens 4 are also arranged in sequence along the second direction to form a step. The five lenses have different refractive powers. Continue to combine Figure 4 The four first sub-lenses 31, 32, 32 and 34 and the second lens 4 are all arranged vertically. The first lens 33 located in the middle is a lens arranged directly facing the human eye. The three diopters of the first lens 33 should be the degree that can correct the user's vision. Since the four first sub-lenses 31, 32, 32 and 34 and the second lens 4 are arranged from far to near relative to the human eye, in order to correct the user's vision so that the user can obtain a complete and clear display effect, the diopters of the above-mentioned four first sub-lenses 31, 32, 32 and 34 and the second lens 4 are arranged in sequence from small to large to achieve the purpose of correcting vision and thus clear display. The above-mentioned four first sub-lenses 31, 32, 32 and 34 and the second lens 4 can respectively intercept different parts from five lenses with different diopters, so as to achieve a clear display effect for the user. This disclosure does not make any specific restrictions on this.

[0040] Of course, the embodiment of five lenses can also be understood as the first lens including two first sub-lenses, the second lens including three second sub-lenses, or the first lens including three first sub-lenses, the second lens including two second sub-lenses, or the first lens is a single lens, and the second lens includes four sub-lenses, etc. As long as the above-mentioned stepped arrangement can be formed and the refractive power of each lens increases successively in the direction toward the human eye, the refractive power of the lens facing the human eye can correct the degree of the user's vision.

[0041] The above description uses examples of the lens body including two lenses, three lenses, and five lenses, respectively. However, the present disclosure is not limited to this. The lens body may include any number of lenses other than one. By configuring the relative positional relationship and diopter of at least two lenses, the distance between the lens assembly and the flat plate of the AR glasses can be reduced, allowing the user to obtain a larger visual range and improving user comfort during use. That is, the present application does not specifically limit the number of sub-lenses included in the first lens 3 and the sub-lenses included in the second lens 4. The multiple lenses arranged sequentially from bottom to top can be arranged in a manner that is from far to near relative to the human eye and from small to large diopter.

[0042] The present application comprises a lens body 2 comprising at least a first lens 3 and a second lens 4, wherein the second lens 4 is disposed downstream of the first lens 3 along a first direction, and the first lens 3 and the second lens 4 are arranged sequentially along a second direction, wherein the first refractive power of the first lens 3 is less than the second refractive power of the second lens 4. The lens body 2 is used to correct the user's vision. The above structure enables the lens body 2 to be closer to the user, providing a larger field of view, thereby resolving the problem of users with ametropia having difficulty obtaining a larger field of view. The above structure also prevents stray light from the bottom of the lens assembly from being reflected into the human eye, thereby eliminating some stray light. In addition, the lens assembly can improve the user's wearing comfort and optimize the user experience.

[0043] In some embodiments, as Figure 1 and Figure 2 As shown, at least one lens body 2 includes a first lens body 21 and a second lens body 22 spaced apart from each other, and a bracket 1 is used to support the first lens body 21 and / or the second lens body 22. The above structure enables the lens to be adapted for installation on head-mounted display devices such as AR glasses and VR glasses, correcting the vision of the user's two eyes and achieving better display effects.

[0044] For example, the first lens body 21 and the second lens body 22 correspond to the user's two eyes, respectively, to correct the vision of the two eyes. It should be noted that the refractive power of the lens included in the first lens body 21 is adapted to the vision of one eye, and the refractive power of the lens included in the second lens body 22 is adapted to the vision of the other eye.

[0045] In some embodiments, as Figure 5 As shown, the lens assembly also includes an encapsulating flat mirror 23 for encapsulating at least one lens body 2. The encapsulating flat mirror 23 fits inside and outside the at least one lens body 2, and the bracket 1 is used to support the at least one encapsulated lens body 2. The encapsulating flat mirror 23 is used to encapsulate the at least one lens body 2 therein, thereby protecting the lens body 2.

[0046] For example, the packaged flat mirror 23 may be formed with a mounting cavity for accommodating the mirror body 2, the upper end of the mounting cavity is open, and the mirror body 2 may be embedded therein through the open end of the mounting cavity, and the cavity wall of the mounting cavity is arranged corresponding to the two opposite mirror surfaces of the mirror body 2.

[0047] In some embodiments, the first lens 3 and the second lens 4 are an integral piece.

[0048] For example, the first lens 3 and the second lens 4 can be bonded into an integral part by gluing, or the first lens 3 and the second lens 4 can be formed into an integral part by an integral manufacturing and molding method, so as to ensure the relative position relationship between the first lens 3 and the second lens 4 while facilitating the user to operate and replace the lens body 2.

[0049] In some embodiments, as Figure 1 and Figure 2 As shown, the bracket 1 is provided with a stepped portion 11 , and the first lens 3 and / or the second lens 4 are arranged on the stepped portion 11 .

[0050] For example, the distances between the first lens 3 and the second lens 4 and the human eye are not the same. Providing a stepped portion 11 on the bracket 1 can enable the first lens 3 and the second lens 4 to maintain a stable relative position. A limiting portion that can limit the displacement of the lens along the first direction can be provided on the stepped portion 11 to ensure stably installed lenses.

[0051] For example, the stepped portion 11 is provided with stepped positions corresponding to a plurality of lenses. The present application does not specifically limit the number of the stepped positions. Figure 1 and Figure 2 Taking the three lenses shown in FIG as an example, the step portion 11 is formed with step positions corresponding to the three lenses respectively.

[0052] For example, Figure 1 As shown, the bracket 1 is provided with an assembly portion 9 for connecting to a head-mounted display device. The second lens 4 is closer to the assembly portion 9 relative to the first lens 3, and the first diopter is smaller than the second diopter. The lens assembly can be detachably mounted on the head-mounted display device via the assembly portion 9. For example, the assembly portion 9 can be configured as a snap-fit structure that can be snapped onto the head-mounted display device, or as a magnetic structure that can be adsorbed onto the head-mounted display device. For example, the assembly portion of the present application is a crossbeam portion of the bracket 1, and a step portion 11 extends downward from the crossbeam portion.

[0053] In some embodiments, the first lens 3 and the second lens 4 are both arranged vertically. The vertical arrangement of the first lens 3 and the second lens 4 can prevent stray light below the lens assembly from entering the human eye, that is, play a role in eliminating some stray light.

[0054] In some embodiments, the first lens 3 and the second lens 4 are both Fresnel lenses. The Fresnel lenses are thinner and lighter, which can reduce the weight of the lens assembly and improve the user experience.

[0055] The present application also provides a head mounted display device, such as Figure 6 and Figure 7 As shown, the head-mounted display device includes an optical imaging system 5, a housing 6, and the aforementioned lens assembly. The optical imaging system 5 includes an optical assembly that forms the appearance of the head-mounted display device and an image source assembly 51 that provides image light passing through the optical assembly. The housing 6 is used to support the optical assembly, and the lens assembly is connected to the housing 6 and cooperates with the optical assembly. For example, the lens assembly can be arranged downstream of the optical assembly along a first direction.

[0056] For example, the head-mounted display device may be an AR glasses, a VR glasses or other head-mounted display device. The image source component 51 is used to display the image projected into the human eye. The shape of the image source component 51 may be a plane or a free-form surface such as a concave, convex, spherical, or aspherical surface. Figure 6 The structure diagram of the image source component 51 is shown as a planar structure.

[0057] A head-mounted display device using the above-described lens assembly comprises a lens body 2 including at least a first lens 3 and a second lens 4. The second lens 4 is disposed downstream of the first lens 3 along a first direction, and the first lens 3 and the second lens 4 are arranged sequentially along a second direction. The first refractive power of the first lens 3 is less than the second refractive power of the second lens 4. The lens body 2 is used to correct the user's vision. The above-described structure enables the head-mounted display device to be closer to the user, providing a wider viewing range, thereby resolving the problem of users with ametropia having difficulty obtaining a wider viewing range. Furthermore, the above-described structure prevents stray light from the bottom of the lens assembly from being reflected into the human eye, thereby eliminating some stray light. Furthermore, the wearing comfort of the head-mounted display device is improved, thereby optimizing the user experience.

[0058] In some embodiments, as Figure 6 As shown, the optical component includes a first optical element 52 and a second optical element 53. Among them, the first optical element 52 can be a semi-transparent and semi-reflective mirror, and the second optical element 53 can be understood as a flat plate of AR glasses. The second optical element 53 has a first end close to the first optical element 52 and a second end away from the first optical element 52. The first end and the second end are arranged opposite to each other, and the second optical element 53 is arranged on the inner side of the head-mounted display device. For example, the second optical element 53 is arranged downstream of the first optical element 52 along the first direction. The above-mentioned "first end" and "second end" can be opposite ends distributed along the left and right directions of the head-mounted display device. For example, the head-mounted display device is in the form of glasses, and the left and right directions refer to the direction in which the frame between the two temples extends. The above-mentioned "inside" refers to the side close to the user's eyes when the user is wearing the head-mounted display device. When the user needs a lens assembly, the lens assembly can be matched with the second optical element 53. As shown Figure 6 As shown, the second optical element 53 may be plate-shaped, and its first end may be understood as being close to the upper end of the human eye in the worn state, and its second end may be understood as being away from the lower end of the human eye.

[0059] For example, Figure 6The arrows shown in the figure are the paths of light. The working principle of the head-mounted display device is as follows: the image light of the image source component 51 is emitted from the top to the bottom into the display light path component. At the same time, the ambient light is emitted from the right side of the first optical element 52 to the left side (towards the human eye). Part of the image light is reflected by the second optical element 53 and emitted to the first optical element 52, and part of the light is reflected by the first optical element 52 and emitted to the second optical element 53. At the same time, part of the ambient light passes through the first optical element 52 and the second optical element 53 in sequence to reach the human eye. In this way, part of the image light and part of the ambient light finally reach the human eye at the same time, allowing the user to see the real environment outside and the image of the image source component 51 superimposed on the real environment.

[0060] For example, the outer surface of the lens farthest from the human eye contained in the lens body 2 of the above-mentioned lens assembly is in contact with the inner surface of the second optical element 53, so that the head-mounted display device can be as close to the human eye as possible, avoiding a large gap between the lens assembly and the second optical element 53, which affects the display effect.

[0061] In some embodiments, the primary optical axis of the first lens 3 or the second lens 4 is aligned with the optical path passing through the center of the second optical element 53 .

[0062] For example, Figure 3 As shown, the second lens 4 is positioned directly opposite the human eye. Its second refractive power should be sufficient to correct the user's vision, and its principal optical axis should be aligned with the optical path passing through the center of the second optical element 53 to achieve a good display effect. It is understood that when the first lens 3 is positioned directly opposite the human eye, its first refractive power should be sufficient to correct the user's vision, and its principal optical axis should be aligned with the optical path passing through the center of the second optical element 53. This application does not specifically limit whether the principal optical axis of the first lens 3 or the principal optical axis of the second lens 4 is aligned with the optical path passing through the center of the second optical element 53. It suffices that the lens that directly faces the human eye be aligned with the optical path passing through the center of the second optical element 53.

[0063] In some embodiments, as Figure 1 and Figure 7 As shown, the lens assembly's bracket 1 is provided with one or more first magnetic members 7 for mounting the lens assembly, and the housing 6 is provided with one or more second magnetic members (not shown) capable of attracting the first magnetic members 7. For example, the first magnetic members 7 can be arranged on the mounting portion 9 of the bracket 1. The lens assembly is stably mounted on the housing 6 of the head-mounted display device through the bracket 1 using magnetic attraction, and this magnetic attraction facilitates replacement and installation of the lens assembly.

[0064] For example, Figure 7As shown, when there are multiple first magnetic members 7, the multiple first magnetic members 7 can be arranged in sequence along a length direction, so that the bracket 1 can be installed at a specified position through multi-point positioning, preventing the installation position of the bracket 1 from being offset after each disassembly and assembly.

[0065] In addition, although exemplary embodiments have been described herein, the scope includes any and all embodiments based on the present application with equivalent elements, modifications, omissions, combinations (e.g., solutions that intersect various embodiments), adaptations, or changes. The elements in the claims are to be interpreted broadly based on the language employed in the claims and are not limited to the examples described in this specification or during the prosecution of this application, which examples are to be interpreted as non-exclusive. Therefore, this specification and examples are intended to be considered as examples only, with the true scope and spirit being indicated by the following claims and the full scope of their equivalents.

[0066] The above description is intended to be illustrative rather than restrictive. For example, the above examples (or one or more of their solutions) can be used in combination with each other. For example, a person of ordinary skill in the art may use other embodiments when reading the above description. In addition, in the above-mentioned specific embodiments, various features can be grouped together to simplify the application. This should not be interpreted as an intention that a disclosed feature that is not required to be protected is necessary for any claim. On the contrary, the subject matter of the present application may be less than all the features of a specific disclosed embodiment. Thus, the following claims are incorporated into the specific embodiments as examples or embodiments, wherein each claim is independently a separate embodiment, and it is considered that these embodiments can be combined with each other in various combinations or arrangements. The scope of this application should be determined with reference to the appended claims and the full scope of equivalents to which these claims are entitled.

[0067] The above embodiments are merely exemplary embodiments of the present application and are not intended to limit the scope of the present application. The scope of protection of the present application is defined by the claims. Those skilled in the art may make various modifications or equivalent substitutions to the present application within the essence and scope of protection of the present application, and such modifications or equivalent substitutions shall also be deemed to fall within the scope of protection of the present application.

Claims

1. A lens assembly comprising: Bracket: and At least one mirror body, the at least one mirror body is supported by the bracket and each mirror body includes at least two lenses, and the at least two lenses include: a first lens having a first refractive power; and a second lens having a second refractive power, the first lens and the second lens being arranged in a stepped manner, and the first refractive power being different from the second refractive power; The at least one mirror body includes a first mirror body and a second mirror body that are spaced apart, and the bracket is used to support the first mirror body and / or the second mirror body; The first mirror body and the second mirror body are arranged on the bracket along a left-right direction, wherein the left-right direction is a direction in which the frame between the two temples of the head-mounted display device extends; The lens assembly is used to cooperate with the optical assembly of the optical imaging system of the head-mounted display device; the second lens is arranged downstream of the first lens along a first direction that is the same as the main optical axis direction of the first lens or the second lens; the second lens is arranged to face the user's eye, the second refractive power is a degree that can correct the user's vision, the first lens is farther away from the human eye than the second lens, and the first refractive power is smaller than the second refractive power.

2. The lens assembly according to claim 1, wherein: The first lens includes a plurality of first sub-lenses arranged in a step-by-step manner, and the refractive powers of the plurality of first sub-lenses are different.

3. The lens assembly according to claim 1, wherein: The second lens includes a plurality of second sub-lenses arranged in a step-by-step manner, and the plurality of second sub-lenses have different refractive powers.

4. The lens assembly according to claim 1, wherein: The lens assembly also includes a packaging flat lens for packaging the at least one lens body, the packaging flat lens is matched with the inner and outer sides of the at least one lens body, and the bracket is used to support the at least one lens body after packaging.

5. The lens assembly according to claim 1, wherein: The first lens and the second lens are integrated.

6. The lens assembly according to claim 1, wherein: The bracket is provided with a stepped portion, and the first lens and / or the second lens is arranged on the stepped portion.

7. The lens assembly according to claim 1, wherein: The first lens and the second lens are both arranged vertically.

8. The lens assembly according to claim 1, wherein: The bracket is provided with an assembly portion, which is used to be connected to a head-mounted display device, and the second lens is closer to the assembly portion than the first lens.

9. A head-mounted display device, wherein: include: An optical imaging system, comprising an optical component and an image source component for providing image light passing through the optical component; a housing, the housing being used to support the optical assembly; and The lens assembly according to any one of claims 1 to 8, wherein the lens assembly is connected to the housing and cooperates with the optical assembly.

10. The head mounted display device according to claim 9, wherein: The optical assembly comprises: a first optical element, and a second optical element, the second optical element having a first end close to the first optical element and a second end away from the first optical element, the first end and the second end being arranged opposite to each other, and the second optical element being arranged on an inner side of the head-mounted display device; The lens assembly cooperates with the second optical element.

11. The head mounted display device according to claim 10, wherein: The principal optical axis of the first lens or the second lens is aligned with an optical path passing through the center of the second optical element.

12. The head-mounted display device according to claim 9, wherein: One or more first magnetic members for mounting the lens assembly are provided on the bracket of the lens assembly, and one or more second magnetic members capable of being attracted to the first magnetic members are provided on the housing.

Images