Diopter adjusting apparatus and VR device

Abstract

A diopter adjusting apparatus and a VR device. The diopter adjusting apparatus comprises: a lens mounting part for mounting a lens module; a guide adjusting part connected to the lens mounting part, wherein the guide adjusting part can move along a preset path such that the lens mounting part moves in a first direction; and a driving part used for driving the guide adjusting part to move along the preset path. Compared with the prior art, by means of the arranged lens mounting part, guide adjusting part, and driving part, the driving part drives the guide adjusting part to move along the preset path, such that the lens mounting part is driven to move in a reciprocating manner, thereby achieving automatic adjustment of the diopter.

Description

Diopter adjustment device and VR equipment Technical Field

[0001] The present invention relates to the field of virtual reality technology, and in particular to a diopter adjustment device and VR equipment. Background Art

[0002] Virtual reality technology, abbreviated as VR in English. When using VR devices, it is often necessary to adjust the position of the optical lenses so that users with different vision can better use the VR devices. However, when adjusting the diopter of existing VR devices, it is generally manually adjusted to the appropriate diopter: first adjust the VR optical module to the appropriate diopter, and then confirm the clarity of the picture after wearing it in place. If the picture clarity is not enough, the user needs to remove the VR device and readjust the diopter or pull the push button to adjust the diopter, which is not conducive to the user to quickly adjust to a reasonable diopter, affecting the user experience. Technical issues

[0003] The purpose of the present invention is to provide a diopter adjustment device and a VR device to solve the technical problems in the prior art, which can realize automatic adjustment of diopter. Technical Solutions

[0004] In a first aspect, the present invention provides a diopter adjustment device, comprising:

[0005] A lens mounting portion, used for mounting a lens module;

[0006] a guide adjustment portion connected to the lens mounting portion, wherein the guide adjustment portion is movable along a preset path so as to move the lens mounting portion along a first direction;

[0007] The driving part is used to drive the guide adjustment part to move along the preset path.

[0008] In the above-mentioned diopter adjustment device, preferably, the driving unit includes a driving motor, a worm, a transmission gear set and a gear ring, wherein:

[0009] The output shaft of the driving motor is connected to the worm shaft to drive the worm to rotate;

[0010] The gear ring is arranged on the guide adjustment part, and the transmission gear set is respectively engaged with the worm and the gear ring.

[0011] A diopter adjustment device as described above, wherein preferably, the transmission gear set includes a first gear and a second gear arranged coaxially, there is a difference in size between the first gear and the second gear, the first gear is engaged with the worm, and the second gear is engaged with the gear ring.

[0012] In the above-mentioned diopter adjustment device, preferably, the guide adjustment portion is provided with an accommodating cavity, an inner surface of the accommodating cavity is provided with a first guide groove, and an extending direction of the first guide groove forms a preset angle with the first direction;

[0013] The lens mounting portion is at least partially accommodated in the accommodating cavity. A first guide protrusion is provided on the outer surface of the lens mounting portion. The first guide protrusion is loosely fitted in the first guide groove.

[0014] A diopter adjustment device as described above, wherein, preferably, a plurality of first guide protrusions are provided on the outer surface of the lens mounting portion, a plurality of first guide grooves are provided on the inner surface of the accommodating cavity, and the plurality of first guide protrusions and the plurality of first guide grooves are arranged in one-to-one correspondence.

[0015] In the diopter adjustment device as described above, preferably, the first guide groove extends in a spiral shape.

[0016] In the above-mentioned diopter adjustment device, preferably, both the lens mounting portion and the guide adjustment portion are cylindrical structures, and the guide adjustment portion coaxial cover is provided on the circumference of the lens mounting portion.

[0017] The diopter adjustment device as described above, wherein preferably, the diopter adjustment device further includes a limiting portion, and when the guide adjustment portion moves to the starting end and the end end of the preset path, the limiting portion limits further movement of the guide adjustment portion.

[0018] In the above-mentioned diopter adjustment device, preferably, the limiting portion includes a limiting protrusion, a first travel switch and a second travel switch, wherein:

[0019] The limiting protrusion is provided on the guide adjustment portion;

[0020] The first travel switch and the second travel switch are both electrically connected to the driving part. The first travel switch is located at the end of the preset moving path. When the limit protrusion moves to the end of the preset path, the limit protrusion triggers the first travel switch. The second travel switch is located at the starting end of the preset moving path. When the limit protrusion moves to the starting end of the preset path, the limit protrusion triggers the second travel switch.

[0021] In a second aspect, the present invention provides a VR device comprising the aforementioned diopter adjustment device. Beneficial effects

[0022] Compared with the prior art, the present invention realizes automatic adjustment of the diopter by providing a lens mounting portion, a guide adjustment portion and a drive portion, and the drive portion drives the guide adjustment portion to move along a preset path, thereby driving the lens mounting portion to move back and forth. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] FIG1 is a perspective view of the overall structure of a diopter adjustment device according to an embodiment of the present invention from one viewing angle;

[0024] FIG2 is a perspective view of the overall structure of the diopter adjustment device according to an embodiment of the present invention from another perspective;

[0025] FIG3 is a front view of the overall structure of the diopter adjustment device according to an embodiment of the present invention;

[0026] FIG4 is a rear view of the overall structure of the diopter adjustment device according to an embodiment of the present invention;

[0027] FIG5 is a cross-sectional view taken along line AA of FIG4 ;

[0028] FIG6 is a perspective view of the diopter adjustment device according to an embodiment of the present invention with the pressure plate hidden at one viewing angle;

[0029] FIG7 is a perspective view of the diopter adjustment device according to an embodiment of the present invention with the pressure plate hidden from another viewing angle;

[0030] FIG8 is a perspective view of a guide adjustment portion of a diopter adjustment device according to an embodiment of the present invention;

[0031] FIG9 is a top view of the guide adjustment portion of the diopter adjustment device according to an embodiment of the present invention;

[0032] FIG10 is a perspective view of a lens mounting portion of a diopter adjustment device according to an embodiment of the present invention;

[0033] FIG11 is a perspective view of a support base of the diopter adjustment device according to an embodiment of the present invention.

[0034] Description of reference numerals:

[0035] 10-lens mounting portion, 11-lens module, 12-first guide protrusion, 13-second guide protrusion;

[0036] 20-guide adjustment portion, 21-accommodation cavity, 22-first guide groove, 23-tooth ring, 24-convex ring, 25-limiting protrusion;

[0037] 30-driving unit, 31-driving motor, 32-worm, 33-transmission gear set, 331-first gear, 332-second gear;

[0038] 40-limiting part, 41-first travel switch, 42-second travel switch;

[0039] 50-base plate;

[0040] 60-support seat, 61-convex cylinder, 62-second guide groove;

[0041] 70-pressing plate;

[0042] 80-motor mounting plate;

[0043] D1 - First direction. Best Mode for Carrying Out the Invention

[0044] The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and are not to be construed as limiting the present invention.

[0045] As shown in FIG1 to FIG11 , an embodiment of the present application provides a diopter adjustment device, comprising a lens mounting portion 10 , a guide adjustment portion 20 , and a drive portion 30 , wherein:

[0046] The lens mounting portion 10 is used to mount a lens module 11. The structure of lens module 11 can refer to existing lens module structures and is not limited here. For example, it can include, but is not limited to, at least two convex lenses spaced apart. When a user wears the VR device, their visual focus through the lenses falls on the VR device's viewfinder eyepiece (not shown). By adjusting the distance between the lens module 11 and the viewfinder eyepiece, i.e., by adjusting the diopter, users with different vision can achieve clear vision.

[0047] The guide adjustment portion 20 is connected to the lens mounting portion 10 to guide the orderly movement of the lens mounting portion 10. The guide adjustment portion 20 can move along a preset path so that the lens mounting portion 10 moves along a first direction D1. The first direction D1 is the direction of the lens module 11 toward the viewfinder eyepiece. When the lens mounting portion 10 moves back and forth along the first direction D1, the distance between the viewfinder eyepiece and the lens module 11 changes, which corresponds to a change in diopter.

[0048] The driving unit 30 is used to drive the guide adjustment unit 20 to move along a preset path, thereby realizing automatic adjustment of the diopter. Compared with manual adjustment, the diopter of the lens module 11 can be adjusted more conveniently without repeatedly wearing the VR device, which improves the user experience and is simpler and more convenient to operate.

[0049] In the embodiment provided in the present application, the preset path of the guide adjustment part 20 is the rotational movement of the guide adjustment part 20 along its own axis as the center line. Compared with linear movement, it can save the internal space of the VR device, making the VR device lighter and thinner. In order to drive the guide adjustment part 20 to rotate forward or reverse, in a feasible embodiment, as shown in Figure 6, the driving part 30 includes a driving motor 31, a worm 32, a transmission gear set 33 and a gear ring 23. The output shaft of the driving motor 31 is axially connected to the worm 32 to drive the worm 32 to rotate. The gear ring 23 is provided on the guide adjustment part 20, and the transmission gear set 33 is respectively engaged with the worm 32 and the gear ring 23. The transmission gear set 33 is used to transmit the driving force to the guide adjustment part 20 at a variable speed. The drive motor 31 rotates forward, and the torque is transmitted to the guide adjustment part 20 via the worm 32, the transmission gear set 33, and the gear ring 23, thereby realizing the forward rotation of the guide adjustment part 20. The drive motor 31 rotates reversely, and the torque is transmitted to the guide adjustment part 20 via the worm 32, the transmission gear set 33, and the gear ring 23, thereby realizing the reverse rotation of the guide adjustment part 20.

[0050] Further, referring to Figure 6, the transmission gear set 33 is a double gear, including a first gear 331 and a second gear 332 arranged coaxially. The first gear 331 and the second gear 332 have the same module, and there is a difference in the size of the first gear 331 and the second gear 332. The diameter of the first gear 331 is larger than the diameter of the second gear 332. The first gear 331 is engaged with the worm 32, and the second gear 332 is engaged with the gear ring 23, thereby changing the speed of the output shaft of the drive motor 31, avoiding the guide adjustment part 20 from rotating too fast, and reducing the adjustment accuracy of the lens module 11.

[0051] As shown in Figure 8, a accommodating cavity 21 is provided on the guide adjustment portion 20, and the inner contour surface of the accommodating cavity 21 is adapted to the outer contour surface of the lens mounting portion 10. The accommodating cavity 21 is open at at least one end surface of the guide adjustment portion 20. A first guide groove 22 is provided on the inner surface of the accommodating cavity 21, and a preset angle is formed between the extension direction of the first guide groove 22 and the first direction D1. In a feasible embodiment, the first guide groove 22 is a spiral groove, and the first guide groove 22 rises in a spiral shape along the first direction D1.

[0052] 5 , 8 , and 10 , the lens mounting portion 10 is at least partially received within the accommodating cavity 21 via the opening. The lens mounting portion 10 is loosely fitted within the accommodating cavity 21. A first guide protrusion 12 is provided on the outer surface of the lens mounting portion 10. The first guide protrusion 12 is loosely fitted within the first guide groove 22. Because the first guide groove 22 is inclined relative to the movement direction of the lens mounting portion 10, when the guide adjustment portion 20 rotates forward along its own axis, the bottom wall of the first guide groove 22 abuts against the first guide protrusion 12, imparting a force component toward the viewfinder eyepiece, thereby causing the lens mounting portion 10 to move toward the viewfinder eyepiece. When the guide adjustment portion 20 rotates backward along its own axis, the top wall of the first guide groove 22 abuts against the first guide protrusion 12, imparting a force component away from the viewfinder eyepiece, thereby causing the lens mounting portion 10 to move away from the viewfinder eyepiece, thereby achieving a change in diopter.

[0053] Those skilled in the art will appreciate that the outer surface of the lens mounting portion 10 may be provided with a first guide groove 22 , and the inner surface of the accommodating cavity 21 of the guide adjustment portion 20 may be provided with a first guide protrusion 12 , as defined herein.

[0054] Further, referring to Figures 8 and 10, a plurality of first guide protrusions 12 are provided on the outer surface of the lens mounting portion 10, and the plurality of first guide protrusions 12 are arranged in a ring-shaped and evenly spaced manner on the outer surface of the lens mounting portion 10. A plurality of first guide grooves 22 are provided on the inner surface of the accommodating cavity 21. The plurality of first guide protrusions 12 and the plurality of first guide grooves 22 are arranged in a one-to-one correspondence, so that when the guide adjustment portion 20 rotates and the lens mounting portion 10 moves, the overall structure is more stable.

[0055] In the embodiment provided in the present application, three first guide protrusions 12 are provided at equal intervals on the outer surface of the lens mounting portion 10, and three first guide grooves 22 are provided at equal intervals on the inner surface of the accommodating cavity 21. Those skilled in the art will appreciate that the number of the first guide protrusions 12 and the first guide grooves 22 can be determined according to actual needs, and can be strictly corresponding in number, with each first guide protrusion 12 corresponding to one first guide groove 22, or can have a difference, for example, three first guide protrusions 12 and one first guide groove 22 are provided, and the three first guide protrusions 12 are all clearance-fitted in the first guide groove 22, which is not limited here.

[0056] As shown in Figure 5, the lens mounting part 10 and the guide adjustment part 20 are both cylindrical structures. The guide adjustment part 20 is coaxially covered on the circumference of the lens mounting part 10. In the normal direction of the first direction D1, the guide adjustment part 20 and the lens mounting part 10 at least partially overlap, which can reduce the space occupied by the VR device and make the VR device thinner.

[0057] In the embodiment provided in the present application, as shown in Figure 7, the diopter adjustment device also includes a limiting portion 40. When the guide adjustment portion 20 moves to the starting end and the end end of the preset path, the limiting portion 40 limits the further movement of the guide adjustment portion 20, thereby limiting the movement range of the lens mounting portion 10, avoiding excessive movement of the lens mounting portion 10 and interfering with other components in the VR device.

[0058] In a feasible embodiment, as shown in FIG. 7 , the limit portion 40 includes a limit protrusion 25 , a first travel switch 41 , and a second travel switch 42 , wherein:

[0059] The limiting protrusion 25 is provided on the guide adjustment portion 20 and rotates synchronously with the guide adjustment portion 20 .

[0060] The first travel switch 41 and the second travel switch 42 are both electrically connected to the drive motor 31 in the drive unit 30 , wherein:

[0061] The driving motor 31 rotates forward, driving the guide adjustment part 20 to rotate forward, and the limit protrusion 25 rotates accordingly. The first travel switch 41 is located at the end of the preset moving path. When the limit protrusion 25 moves to the end of the preset path, the limit protrusion 25 triggers the first travel switch 41, and the driving motor 31 stops working or rotates in the opposite direction, so that the limit protrusion 25 cannot cross the first travel switch 41. After the limit protrusion 25 disengages from the first travel switch 41, the first travel switch 41 returns to its initial state.

[0062] The driving motor 31 rotates in the reverse direction, driving the guide adjustment part 20 to rotate in the reverse direction, and the limit protrusion 25 rotates accordingly. The second travel switch 42 is located at the starting end of the preset moving path. When the limit protrusion 25 moves to the starting end of the preset path, the limit protrusion 25 triggers the second travel switch 42, and the driving motor 31 stops working or rotates forward, so that the limit protrusion 25 cannot cross the second travel switch 42. After the limit protrusion 25 disengages from the second travel switch 42, the second travel switch 42 returns to its initial state.

[0063] In the embodiment provided in the present application, as shown in Figures 1, 7 and 11, the diopter adjustment device includes a base plate 50, a support seat 60 and a pressure plate 70. The support seat 60 is stacked on the base plate 50, and a notch is provided on the support seat 60. The first limit switch 41 and the second limit switch 42 are arranged on the base plate 50 exposed at the notch.

[0064] A motor mounting plate 80 is further provided on the base plate 50 , on which the drive motor 31 and the transmission gear set 33 are both provided. A bearing seat is provided on the motor mounting plate 80 , in which the worm 32 is rotatably supported.

[0065] A through slot is provided on the pressure plate 70, and the guide adjustment part 20 is rotatably arranged on the support seat 60, and one end of the guide adjustment part 20 passes through the through slot. The pressure plate 70 is used to limit the movement of the guide adjustment part 20 along the first direction D1 and the normal direction of the first direction D1, so that the guide adjustment part 20 can only rotate. A convex ring 24 is sleeved on or integrally formed on the outer peripheral surface of the guide adjustment part 20, and the gear ring 23 and the limiting protrusion 25 are both provided on the outer peripheral surface of the convex ring 24. A preset gap is formed between the pressure plate 70 and the support seat 60, and the convex ring 24 is clamped in this preset gap by the pressure plate 70 and the support seat 60.

[0066] A convex cylinder 61 is provided on the support seat 60, and a second guide groove 62 is provided in the convex cylinder 61. The second guide groove 62 extends along the first direction D1. The lens mounting part 10 is coaxially arranged in the guide adjustment part 20 and is clearance-fitted in the convex cylinder 61. A second guide protrusion 13 is also provided on the outer circumference of the lens mounting part 10. The second guide protrusion 13 is clearance-fitted in the second guide groove 62. The lens mounting part 10 and the guide adjustment part 20 are guided and connected by the first guide groove 22 and the first guide protrusion 12, the second guide groove 62 and the second guide protrusion 13 to guide the lens mounting part 10 to move along the first direction D1.

[0067] Based on the above embodiments, the present application also provides a VR device, including the aforementioned diopter adjustment device, which can realize automatic diopter adjustment, and at the same time has a simple structure, easy assembly, and meets mass production requirements.

[0068] The above describes in detail the structure, features and effects of the present invention based on the embodiments shown in the drawings. The above is only a preferred embodiment of the present invention, but the scope of implementation of the present invention is not limited to what is shown in the drawings. Any changes made in accordance with the concept of the present invention, or modifications to equivalent embodiments with equivalent changes, which do not exceed the spirit covered by the description and drawings, should be within the scope of protection of the present invention.

Claims

1. A diopter adjustment device, It is characterized in that include: A lens mounting portion, used for mounting a lens module; A guide adjustment portion connected to the lens mounting portion, wherein the guide adjustment portion can move along a preset path so as to move the lens mounting portion along a first direction; The driving part is used to drive the guide adjustment part to move along the preset path.

2. The diopter adjustment device according to claim 1, It is characterized in that The driving unit includes a driving motor, a worm, a transmission gear set and a gear ring, wherein: The output shaft of the driving motor is connected to the worm shaft to drive the worm to rotate; The gear ring is arranged on the guide adjustment part, and the transmission gear set is respectively meshed with the worm and the gear ring.

3. The diopter adjustment device according to claim 2, It is characterized in that The transmission gear set includes a first gear and a second gear which are coaxially arranged. The first gear and the second gear have different sizes and diameters. The first gear meshes with the worm, and the second gear meshes with the gear ring.

4. The diopter adjustment device according to claim 1, It is characterized in that The guide adjustment portion is provided with an accommodating cavity, and the inner surface of the accommodating cavity is provided with a first guide groove, and an extending direction of the first guide groove forms a preset angle with the first direction; The lens mounting portion is at least partially accommodated in the accommodating cavity. A first guide protrusion is provided on the outer surface of the lens mounting portion. The first guide protrusion is loosely fitted in the first guide groove.

5. The diopter adjustment device according to claim 4, It is characterized in that A plurality of first guide protrusions are provided on the outer surface of the lens mounting portion, a plurality of first guide grooves are provided on the inner surface of the accommodating cavity, and the plurality of first guide protrusions and the plurality of first guide grooves are arranged in one-to-one correspondence.

6. The diopter adjustment device according to claim 4, It is characterized in that The first guide groove extends in a spiral shape.

7. The diopter adjustment device according to claim 1, It is characterized in that The lens mounting portion and the guide adjustment portion are both cylindrical structures, and the guide adjustment portion is coaxially covered on the circumference of the lens mounting portion.

8. The diopter adjustment device according to claim 1, It is characterized in that The diopter adjustment device further includes a limiting portion, and when the guide adjustment portion moves to the starting end and the end end of the preset path, the limiting portion limits further movement of the guide adjustment portion.

9. The diopter adjustment device according to claim 8, It is characterized in that The limit portion includes a limit protrusion, a first travel switch and a second travel switch, wherein: The limiting protrusion is arranged on the guide adjustment part; The first travel switch and the second travel switch are both electrically connected to the driving part. The first travel switch is located at the end of the preset moving path. When the limit protrusion moves to the end of the preset path, the limit protrusion triggers the first travel switch. The second travel switch is located at the starting end of the preset moving path. When the limit protrusion moves to the starting end of the preset path, the limit protrusion triggers the second travel switch.

10. A VR device, It is characterized in that The invention comprises a diopter adjustment device as described in any one of claims 1 to 9.

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