Head-mounted display device
By designing a lens holder with asymmetric joints in the head-mounted display device, the problems of inconvenience in lens assembly and the impact of vision correction effects are solved, and the stable fixation of the lens and visual experience are achieved, which is to adapt to the vision correction needs of different users.
Patent Information
- Application Number
- CN202411673605.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Priority Date
- 2024-01-08
- Filing Date
- 2024-11-21
- Publication Date
- 2025-07-08
AI Technical Summary
When users wear vision correction lenses, existing head-mounted display devices are inconvenient to assemble and affect the vision correction effect. Different users need to change the lens frame to meet individual vision needs.
The inner side wall of the lens seat of the head mounted display device has multiple asymmetrically distributed joints, and a gap is maintained between the lens and the optical lens group. By designing the joints to fix the lens in an appropriate position, the lens seat is integrally formed with the body, providing multiple groups of joints to adapt to the optical characteristics of different lenses.
It solves the problems of lens assembly and alignment, improves the convenience of use and visual experience, adapts to the vision correction needs of different users, and avoids lens friction and damage and light leakage.
Smart Images
Figure CN120276157A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to a head-mounted display device. Background Art
[0002] With the rapid progress of current technology, the types and functions of head-mounted display devices are becoming increasingly diverse. Taking an augmented reality head-mounted display device as an example, if a user has common vision problems such as myopia, hyperopia or astigmatism and wants to wear an augmented reality head-mounted display device, they must prepare a pair of vision correction lenses and place them on a lens frame, and then assemble the lens frame to the device so that it is located between the device and the user's eyes. When different users use the same augmented reality head-mounted display device, they must also replace the vision correction lenses and their lens frames suitable for themselves, and the assembly problem between the lens frame and the device will also affect the vision correction effect. Summary of the Invention
[0003] The present invention is directed to a head-mounted display device that can improve the inconvenience when combining vision correction lenses prepared by the user.
[0004] The head-mounted display device of the present invention includes a main body, a first optical lens group, and a second optical lens group. The main body has a first lens seat and a second lens seat for accommodating a first lens and a second lens corresponding to the left and right eyes respectively. The inner side wall of the first lens seat has at least two first engaging portions. The inner side wall of the second lens seat has at least two second engaging portions. The first optical lens group and the second optical lens group are installed in the main body and respectively correspond to the first lens seat and the second lens seat. When the first lens is accommodated in the first lens seat, two third engaging portions of the first lens are engaged with the first engaging portions, and a gap is maintained between the first lens and the first optical lens group. When the second lens is accommodated in the second lens seat, two fourth engaging portions of the second lens are engaged with the second engaging portions, and a gap is maintained between the second lens and the second optical lens group.
[0005] In an embodiment of the present invention, the first lens seat, the second lens seat and the main body are integrally formed.
[0006] In an embodiment of the present invention, the number of the first engaging portions is greater than or equal to three. The number of the second engaging portions is greater than or equal to three.
[0007] In an embodiment of the present invention, the number of the third engaging portions is greater than or equal to three. The number of the fourth engaging portions is greater than or equal to three. The first lens and the second lens are circular lenses. The first engaging portions are asymmetrically distributed. The second engaging portions are asymmetrically distributed.
[0008] In an embodiment of the present invention, the head-mounted display device further includes a fastener for fixing the first lens to the first lens seat.
[0009] In an embodiment of the present invention, the inner sidewall of the first lens holder further has at least two fifth engaging portions. The inner sidewall of the second lens holder further has at least two sixth engaging portions. When a third lens is received in the first lens holder, two seventh engaging portions of the third lens are engaged with the fifth engaging portions, and a gap is maintained between the third lens and the first optical lens group. The optical characteristics of the third lens are different from those of the first lens. When a fourth lens is received in the second lens holder, two eighth engaging portions of the fourth lens are engaged with the sixth engaging portions, and a gap is maintained between the fourth lens and the second optical lens group. The optical characteristics of the fourth lens are different from those of the second lens.
[0010] In an embodiment of the present invention, the first engaging portion and the fifth engaging portion are recessed notches. The recessed depth of the first engaging portion is different from that of the fifth engaging portion.
[0011] In an embodiment of the present invention, one of the fifth engaging portions is one of the first engaging portions. One of the sixth engaging portions is one of the second engaging portions.
[0012] Based on the above, in the head-mounted display device of the present invention, the lens holder is coupled to the body, so there are no problems with assembly and alignment between the lens holder and the body, and the lens can be fixed in place through the design of the engaging portions. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Figure 1 is a schematic diagram of a head-mounted display device according to an embodiment of the present invention;
[0014] Figure 2 is Figure 1 a schematic diagram of the head-mounted display device when installing a kind of lens;
[0015] Figure 3 is Figure 1 a schematic diagram of the head-mounted display device when installing another kind of lens;
[0016] Figure 4 is Figure 1 a partially enlarged schematic diagram of the head-mounted display device;
[0017] Figure 5 is Figure 1 a partially sectional schematic diagram of the head-mounted display device after installing a fastener;
[0018] Figure 6 is a schematic diagram of a head-mounted display device according to another embodiment of the present invention;
[0019] Figure 7 is Figure 6 a schematic diagram of the head-mounted display device when cooperating with two kinds of lenses. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0020] Reference will now be made in detail to exemplary embodiments of the present invention, examples of which are illustrated in the accompanying drawings. Whenever possible, the same reference numerals are used in the drawings and the description to refer to the same or like parts.
[0021] Figure 1 is a schematic diagram of a head-mounted display device according to an embodiment of the present invention. Figure 2 is Figure 1 a schematic diagram of the head-mounted display device when installing a lens. Please refer to Figure 1 and Figure 2 In this embodiment, the head-mounted display device 100 includes a body 110, a first optical lens group 120, and a second optical lens group 130. The body 110 has a first lens holder 112 and a second lens holder 114 for accommodating a first lens 10 and a second lens 20 corresponding to both eyes, respectively.
[0022] In this embodiment, the host 110 can be applied to fields such as a virtual reality system, an augmented reality system, or a mixed reality system, for example. The host 110 may include components such as an optical system and a protective housing, and may be provided with a display or be adapted to place a display. The aforementioned display may be a built-in display or an external portable display (such as a smart phone, etc.), but the present invention is not limited thereto. The optical system includes optical components for changing the optical path of the display, such as lenses, light guides, or prisms, etc. Figure 1 The host 110 in [[ ]] is presented in a form with a slightly larger volume, but the host 110 can also be in the form of a thinner and lighter pair of glasses or other forms with a larger volume.
[0023] The inner sidewall of the first lens holder 112 has at least two first engaging portions 112A. The inner sidewall of the second lens holder 114 has at least two second engaging portions 114B. In this embodiment, the number of the first engaging portions 112A and the second engaging portions 114B is taken as three as an example, but there may also be only two or more. The first optical lens group 120 and the second optical lens group 130 are installed in the body 110. The first optical lens group 120 corresponds to the first lens holder 112, and the second optical lens group 130 corresponds to the second lens holder 114.
[0024] When the first lens 10 is received in the first lens seat 112, two third engaging portions 10C of the first lens 10 are engaged with the first engaging portion 112A, and a gap is maintained between the first lens 10 and the first optical lens group 120. When the second lens 20 is received in the second lens seat 114, two fourth engaging portions 20D of the second lens 20 are engaged with the second engaging portion 114B, and a gap D0 is maintained between the second lens 20 and the second optical lens group 130 without contacting each other. In this way, it is possible to avoid damage caused by friction due to the contact between the first lens 10 and the first optical lens group 120 and between the second lens 20 and the second optical lens group 130, and it is also possible to avoid light leakage and light energy loss caused by the contact between the two. On the other hand, if the gap D0 is too large and not restricted, considering that relatively thick correction lenses may be used, the distances between the first optical lens group 120 and the second optical lens group 130 and the human eye will be further increased, resulting in a reduced field of view, and the human eye can easily see the edges of the first optical lens group 120 and the second optical lens group 130, reducing the favorability of the user experience. In this embodiment, the number of the third engaging portion 10C and the fourth engaging portion 20D is taken as three as an example, but it may also be only two or more.
[0025] In the head-mounted display device 100 of this embodiment, the first lens seat 112 and the second lens seat 114 are originally provided on the body 110, so the user does not need to assemble the first lens seat 112 and the second lens seat 114 to the body 110, nor does the user need to perform alignment. The engagement between the third engaging portion 10C and the first engaging portion 112A enables the assembly and positioning between the first lens 10 and the first lens seat 112 to be easily completed. The engagement between the fourth engaging portion 20D and the second engaging portion 114B enables the assembly and positioning between the second lens 20 and the second lens seat 114 to be easily completed.
[0026] The first lens 10 and the second lens 20 are not part of the head-mounted display device 100 of this embodiment. That is, when the user obtains the head-mounted display device 100 of this embodiment, the first lens 10 and the second lens 20 are not included. Since the head-mounted display device 100 is designed for all users, it does not have the function of adapting to the vision correction needs of individual users. If the user has vision problems such as myopia, hyperopia or astigmatism, the user can prepare the first lens 10 and the second lens 20 with corresponding vision correction functions by himself / herself and install them on the first lens seat 112 and the second lens seat 114, and then a better visual experience can be obtained. When the head-mounted display device 100 is used by other users, because different users require different vision correction effects, the new user can prepare the third lens 12 and the fourth lens 22 with vision correction functions suitable for himself / herself by himself / herself and install them on the first lens seat 112 and the second lens seat 114, and then a better visual experience can also be obtained.
[0027] Figure 3 Yes Figure 1 Schematic diagram when another lens is installed on the head-mounted display device. Please refer to Figure 1 And Figure 3 In this embodiment, the inner sidewall of the first lens holder 112 further has at least two fifth engaging portions 112E. The inner sidewall of the second lens holder 114 further has at least two sixth engaging portions 114F. In this embodiment, the number of the fifth engaging portions 112E and the sixth engaging portions 114F is taken as three as an example, but there may also be only two or more. When the third lens 12 is received in the first lens holder 112, two seventh engaging portions 12C of the third lens 12 are engaged with the fifth engaging portions 112E, and a gap is maintained between the third lens 12 and the first optical lens group 120. When the fourth lens 22 is received in the second lens holder 114, two eighth engaging portions 22D of the fourth lens 22 are engaged with the sixth engaging portions 114F, and a gap is maintained between the fourth lens 22 and the second optical lens group 130. In this way, it is possible to avoid abrasion caused by the contact between the third lens 12 and the first optical lens group 120 and between the fourth lens 22 and the second optical lens group 130, and it is also possible to avoid light leakage and light energy loss caused by the contact between the two. In this embodiment, the number of the seventh engaging portions 12C and the eighth engaging portions 22D is taken as three as an example, but there may also be only two or more.
[0028] Here, the optical characteristics of the third lens 12 are different from those of the first lens 10. The optical characteristics of the fourth lens 22 are different from those of the second lens 20. That is, the first lens 10 and the second lens 20 may be suitable for one user, while the third lens 12 and the fourth lens 22 may be suitable for another user. When the optical characteristics of the lenses are different, the geometric dimensions such as the concavity, convexity, thickness, etc. of the lenses will also be different. Therefore, the first lens holder 112 and the second lens holder 114 provide different engaging portions to engage different lenses, which can avoid the assembly errors of the user and greatly improve the convenience of use.
[0029] Figure 4 Yes Figure 1 Partial enlarged schematic diagram of the head-mounted display device. Please refer to Figures 2 to 4, in this embodiment, the first engaging portion 112A, the second engaging portion 114B, the fifth engaging portion 112E, and the sixth engaging portion 114F are recessed notches. The recess depth D12 of the first engaging portion 112A is different from the recess depth D22 of the fifth engaging portion 112E. The recess depth of the second engaging portion 114B is different from the recess depth of the sixth engaging portion 114F. Since the optical characteristics of the third lens 12 are different from those of the first lens 10, the geometric dimensions such as the concavity, convexity, thickness, and thinness of the third lens 12 are also different from those of the first lens 10. By pre-designing the recess depth D12 of the first engaging portion 112A and the recess depth D22 of the fifth engaging portion 112E, when the first lens 10 and the third lens 12 are installed on the first lens holder 112, good vision correction results can be obtained without the user having to adjust the gap between the lens and the optical lens group. Similarly, since the optical characteristics of the fourth lens 22 are different from those of the second lens 20, the geometric dimensions such as the concavity, convexity, thickness, and thinness of the fourth lens 22 are also different from those of the second lens 20. By pre-designing the recess depth of the second engaging portion 114B and the recess depth of the sixth engaging portion 114F, when the second lens 20 and the fourth lens 22 are installed on the second lens holder 114, good vision correction results can be obtained without the user having to adjust the gap between the lens and the optical lens group.
[0030] Figure 5 is Figure 1 Partial cross-sectional schematic diagram of the head-mounted display device mounting fastener. Please refer to Figure 1 and Figure 5 , in this embodiment, the first lens holder 112, the second lens holder 114, and the body 110 are integrally formed, but the present invention is not limited thereto. In addition, the head-mounted display device 100 of this embodiment may further include a fastener 150 for fixing the first lens 10 to the first lens holder 112. Of course, the head-mounted display device 100 may further include another fastener (not shown) for fixing the second lens 20 to the second lens holder 114. Alternatively, an appropriate bonding force can be provided between the engaging portions of the lens and the lens holder so that the lens can be firmly fixed within the lens holder. The head-mounted display device 100 of this embodiment may further include a protective lens 160 installed on the outer side of the body 110 to protect the components installed within the body 110.
[0031] In addition, Figure 5Also shown is the third lens 12 that can also be fixed to the first lens holder 112. As described above, the geometric dimensions such as the concavity, convexity, thickness, etc. of the third lens 12 are different from those of the first lens 10. The refractive index of corrective lenses is commonly 1.5, 1.56, 1.6, 1.67, 1.7, 1.74, etc., but the present invention is not limited thereto. At the same corrective power, when using a lens with a higher refractive index, the curvature of the produced corrective lens can be smaller and the thickness can be thinner. That is, the thickness of the corrective lens will change due to the corrective diopter, the arc shape of the front and rear arc surfaces, the diameter size, and the refractive index. For example: a corrective myopia lens has a power of 400 degrees, the refractive index of the material used is 1.6, the front arc surface and the rear arc surface are aspherical, and the maximum edge thickness at a diameter of 75 mm is 6 mm. At this time, if only the material with a refractive index of 1.67 is changed, the maximum edge thickness is 5.1 mm. If the material with a refractive index of 1.74 is further changed, its maximum edge thickness will be reduced to 4.4 mm. Therefore, for lenses with different thicknesses, corresponding joints on the lens holder are matched so that a gap D0 can be maintained between the lens and the optical lens group without contacting each other.
[0032] More specifically, by pre-designing the recess depth D12 of the first joint 112A and the recess depth D22 of the fifth joint 112E, when the first lens 10 or the third lens 12 is installed on the first lens holder 112, the gap D0 between the first lens 10 and the first optical lens group 120 or the gap D0 between the third lens 12 and the first optical lens group 120 can be the same or similar, so as to provide a similar visual experience, such as similar optical characteristics or a similar field of view. As for the second lens 20 or the fourth lens 22, when installed on the second lens holder 114, the same or similar gap D0 can also be maintained, which will not be elaborated here.
[0033] Figure 6 It is a schematic diagram of a head-mounted display device according to another embodiment of the present invention. Figure 7 is Figure 6 A schematic diagram of the head-mounted display device when cooperating with two types of lenses. Please refer to Figure 6 and Figure 7 In this embodiment, the head-mounted display device 200 and Figure 1Similar to the head-mounted display device 100, only the differences between the two will be described here. In this embodiment, the first lens 14 and the second lens 24 are circular lenses. Since a circle is a symmetric shape, improper installation may reduce the vision correction effect. For example, the deviation of the astigmatism axis may result in poor astigmatism correction effect. To avoid such a situation, the first engaging portion 212A and the fifth engaging portion 212E of the first lens holder 212 of the main body 210 and the second engaging portion 214B and the sixth engaging portion 214F of the second lens holder 214 can be designed to be asymmetrically distributed. Further, the number of the first engaging portion 212A, the second engaging portion 214B, the fifth engaging portion 212E, and the sixth engaging portion 214F can also be designed to be greater than or equal to three.
[0034] Here, the first lens 14 and the second lens 24 are taken as examples of lenses not for the same user. Therefore, the first lens 14 and the second lens 24 are not left-right symmetric, aiming to illustrate that the head-mounted display device 200 of this embodiment can also be suitable for multiple different users to use in turn. The third engaging portion 14C of the first lens 14 is used to engage with the first engaging portion 212A of the first lens holder 212, and the fourth engaging portion 24D of the second lens 24 is used to engage with the sixth engaging portion 214F of the second lens holder 214. Therefore, their numbers and positions cooperate with each other.
[0035] The number of the third engaging portion 14C being greater than or equal to three and the number of the fourth engaging portion 24D being greater than or equal to three can greatly reduce the chance of incorrect installation of the first lens 14 and the second lens 24, and can also ensure an ideal vision correction effect. In this embodiment, a fifth engaging portion 212E and a first engaging portion 212A are the same structure. That is, the same structure serves as both the fifth engaging portion 212E and the first engaging portion 212A. Similarly, a sixth engaging portion 214F and a second engaging portion 214B are the same structure. That is, the same structure serves as both the sixth engaging portion 214F and the second engaging portion 214B.
[0036] The first lens holder 212 can engage the third engaging portion 14C of the first lens 14 with the first engaging portion 212A, but can also engage with another lens (not shown) with the fifth engaging portion 212E. Similarly, the second lens holder 214 can engage the fourth engaging portion 24D of the second lens 24 with the sixth engaging portion 214F, but can also engage with another lens (not shown) with the second engaging portion 214B.
[0037] As described in the previous embodiments, by pre-designing the recess depths of the first engaging portion and the fifth engaging portion, when the circular first lens or the third lens is mounted on the first lens holder, the gap D0 between the first lens and the first optical lens group or the gap D0 between the third lens and the first optical lens group can be the same or similar, so as to provide a similar visual experience, such as similar optical characteristics or a similar field of view. As for the second lens or the fourth lens mounted on the second lens holder, the gap D0 can also be kept the same or similar, which will not be elaborated here.
[0038] In summary, in the head-mounted display device of the present invention, the lens holder is coupled to the body, so there are no problems of assembly and alignment between the lens holder and the body, and the lens can be fixed in place through the design of the engaging portion. The user can not only combine the vision correction lens prepared by himself with the head-mounted display device, but also simply assemble the lens to the direct head-mounted display device and complete the positioning with the optical lens group in the device, which is simple and lightweight. In addition, the lens holder has multiple sets of pre-designed engaging portions (for example, corresponding to multiple sets of recess depths), and the pre-designed single lens can only be mounted on a specific set of engaging portions on the lens holder. Therefore, when different lenses are mounted on the lens holder, the gaps between these lenses and the optical lens group can be maintained to be the same or similar, so as to provide a similar visual experience, such as similar optical characteristics or a similar field of view.
Claims
1. A head-mounted display device, characterized in that, Comprising: A body having a first lens holder and a second lens holder for accommodating a first lens and a second lens corresponding to both eyes respectively, wherein at least two first engaging portions are provided on the inner sidewall of the first lens holder, and at least two second engaging portions are provided on the inner sidewall of the second lens holder; A first optical lens group mounted in the body and corresponding to the first lens holder; And A second optical lens group mounted in the body and corresponding to the second lens holder, wherein When the first lens is accommodated in the first lens holder, two third engaging portions of the first lens are engaged with the first engaging portions, and a gap is maintained between the first lens and the first optical lens group; When the second lens is accommodated in the second lens holder, two fourth engaging portions of the second lens are engaged with the second engaging portions, and a gap is maintained between the second lens and the second optical lens group.
2. The head-mounted display device according to claim 1, wherein The first lens holder, the second lens holder and the body are integrally formed.
3. The head-mounted display device according to claim 1, characterized in that The number of the first engaging portions is greater than or equal to three, and the number of the second engaging portions is greater than or equal to three.
4. The head-mounted display device according to claim 3, wherein The number of the third engaging portions is greater than or equal to three, the number of the fourth engaging portions is greater than or equal to three, the first lens and the second lens are circular lenses, the first engaging portions are asymmetrically distributed, and the second engaging portions are asymmetrically distributed.
5. The head-mounted display device according to claim 1, wherein It further includes a fastener for fixing the first lens to the first lens holder.
6. The head-mounted display device according to claim 1, wherein At least two fifth engaging portions are further provided on the inner sidewall of the first lens holder, and at least two sixth engaging portions are further provided on the inner sidewall of the second lens holder, wherein When a third lens is accommodated in the first lens holder, two seventh engaging portions of the third lens are engaged with the fifth engaging portions, a gap is maintained between the third lens and the first optical lens group, and the optical characteristics of the third lens are different from those of the first lens; When a fourth lens is accommodated in the second lens holder, two eighth engaging portions of the fourth lens are engaged with the sixth engaging portions, a gap is maintained between the fourth lens and the second optical lens group, and the optical characteristics of the fourth lens are different from those of the second lens.
7. The head-mounted display device according to claim 6, wherein, The first engaging portions and the fifth engaging portions are recessed notches, and the recessed depths of the first engaging portions are different from those of the fifth engaging portions.
8. The head-mounted display device according to claim 6, wherein One of the fifth engaging portions is one of the first engaging portions, and one of the sixth engaging portions is one of the second engaging portions.