CN114296236A - Intelligent head-mounted equipment - Google Patents
Intelligent head-mounted equipment Download PDFInfo
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- CN114296236A CN114296236A CN202111564815.9A CN202111564815A CN114296236A CN 114296236 A CN114296236 A CN 114296236A CN 202111564815 A CN202111564815 A CN 202111564815A CN 114296236 A CN114296236 A CN 114296236A
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- 230000005540 biological transmission Effects 0.000 claims abstract description 120
- 230000007246 mechanism Effects 0.000 claims abstract description 32
- 230000033001 locomotion Effects 0.000 claims abstract description 24
- 210000001747 pupil Anatomy 0.000 claims abstract description 15
- 230000008859 change Effects 0.000 claims abstract description 5
- 230000002457 bidirectional effect Effects 0.000 claims description 11
- 230000001681 protective effect Effects 0.000 claims description 8
- 229910000831 Steel Inorganic materials 0.000 claims description 6
- 239000010959 steel Substances 0.000 claims description 6
- 230000009286 beneficial effect Effects 0.000 abstract description 7
- 238000010586 diagram Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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Abstract
The invention discloses intelligent head-mounted equipment which comprises a body, two lens modules arranged in the body and a pupil distance adjusting mechanism used for realizing the relative or opposite movement of the two lens modules; the flexible transmission shaft is arranged in the body; the pupil distance adjusting mechanism comprises a first transmission structure which is rotatably arranged on the body and a second transmission structure which is arranged on the lens module and is used for being matched with the first transmission structure so as to change the rotary motion into the linear motion; two ends of the flexible transmission shaft are respectively connected with the rotary driving piece and the first transmission structure and used for transmitting torque to enable the first transmission structure and the rotary driving piece to synchronously rotate. Under the drive of the rotary driving piece, the flexible transmission shaft transmits the torque to the first transmission structure, so that the two second transmission structures do reverse linear motion, and the pupil distance adjustment is realized. The invention can not only effectively transmit the driving torque to the interpupillary distance adjusting mechanism, but also simplify the structure and is beneficial to the development towards miniaturization and light weight.
Description
Technical Field
The invention belongs to the technical field of head-mounted display, and particularly relates to intelligent head-mounted equipment.
Background
Along with the rapid development of science and technology, wear display technology and be used in all trades, intelligent head-mounted devices such as VR head-mounted device, AR head-mounted device also become popular gradually. Along with the popularization of various intelligent head-mounted devices, users have made higher requirements on miniaturization, light weight, adjustment convenience and wearing comfort of the head-mounted devices. In the face of competition of various products, a head-mounted device which is lighter, better in operability and simpler in appearance needs to be designed.
An IPD (interpupillary distance) adjusting mechanism on the existing head-mounted equipment mostly transmits torque through a gear transmission structure or a gear rack transmission structure, and because a knob shaft and a power input shaft of the IPD adjusting mechanism have a spatial angle, in order to ensure the effective transmission of the torque, a multi-stage transmission structure is usually required to be arranged to effectively transmit the torque of a knob to the IPD (interpupillary distance) adjusting mechanism; however, the method inevitably increases the complexity of the transmission structure, and uses a plurality of parts such as gears, racks and the like, thereby further increasing the size, weight and production cost of the whole machine, and being not beneficial to the development of the head-wearing equipment towards miniaturization and light weight; most of the current IPD adjusting mechanisms can not carry out stepless adjustment and are inflexible to adjust.
Disclosure of Invention
The invention aims to overcome at least one defect in the prior art, and provides intelligent head-mounted equipment which can effectively transmit driving torque to a pupil distance adjusting mechanism, can simplify the structure and is beneficial to the development of the head-mounted equipment towards miniaturization and light weight.
In order to solve the problems in the prior art, an embodiment of the present invention provides an intelligent head-mounted device, including a body, two lens modules disposed in the body, and a pupil distance adjusting mechanism for implementing relative or opposite movement of the two lens modules; the flexible transmission shaft is arranged in the body;
the pupil distance adjusting mechanism comprises a first transmission structure which is rotatably arranged on the body and a second transmission structure which is arranged on the lens module and is used for being matched with the first transmission structure so as to change the rotary motion into the linear motion;
one end of the flexible transmission shaft is connected with the rotary driving piece, and the other end of the flexible transmission shaft is connected with the first transmission structure and used for transmitting torque to enable the first transmission structure and the rotary driving piece to synchronously rotate.
Further, the first transmission structure comprises a bidirectional worm structure which is rotatably arranged on the body and connected with the flexible transmission shaft;
the second transmission structure is a first rack structure, the first rack structure on one lens module is matched with the forward spiral part of the bidirectional worm structure, and the first rack structure on the other lens module is matched with the reverse spiral part of the bidirectional worm structure.
Further, the bidirectional worm structure comprises a rotating shaft which is rotatably arranged on the body and connected with the flexible transmission shaft, and a first worm and a second worm which are opposite in spiral line direction are arranged on the rotating shaft;
the lens module is installed on the rotating shaft in an axial sliding mode.
Further, the lens module comprises a lens cone and a connecting plate arranged on the lens cone, wherein a sliding seat is arranged on the connecting plate, and the sliding seat is in sliding fit with the rotating shaft; the connecting plate is provided with a notch, the first worm or the second worm is arranged in the notch, and the first rack structure is arranged on the groove wall of the notch.
Further, the body is provided with a guide shaft, the guide shaft and the bidirectional worm structure are located on the upper side and the lower side of the lens module, and the lens module is provided with a sliding block structure in sliding fit with the guide shaft.
Further, the first transmission structure comprises a worm which is rotatably installed on the body and connected with the flexible transmission shaft, and a pair of duplicate gears are respectively rotatably arranged on the body on the left side and the right side of the worm; the duplicate gear comprises a worm wheel and a gear, and the worm wheel is meshed with the worm;
the second transmission structure is a second rack structure, the second rack structure on one of the lens modules is meshed with one of the gears, and the second rack structure on the other lens module is meshed with the other gear.
Furthermore, the first transmission structure comprises a transmission shaft which is rotatably arranged on the body and connected with the flexible transmission shaft, a driving gear is arranged on the transmission shaft, and driven gears are respectively rotatably arranged on the body on the left side and the right side of the driving gear;
the second transmission structure is a third rack structure, the third rack structure on one of the lens modules is meshed with one of the driven gears, and the third rack structure on the other lens module is meshed with the other driven gear.
Further, a flexible protective sleeve is sleeved outside the flexible transmission shaft; the middle part of flexible protective sheath is fixed on the body, one end with first drive structure rotates to be connected, the other end with the rotary driving spare rotates to be connected.
Further, the rotary driving member is an operation knob or a driving motor.
Further, the flexible transmission shaft is a steel wire flexible shaft, a steel belt flexible shaft, a universal shaft joint type flexible shaft or a spring type flexible shaft.
Due to the adoption of the technical scheme, the invention has the following beneficial effects:
the intelligent head-mounted equipment comprises a body, two lens modules arranged in the body and a pupil distance adjusting mechanism for realizing the relative or opposite movement of the two lens modules; the flexible transmission shaft is arranged in the body; the pupil distance adjusting mechanism comprises a first transmission structure which is rotatably arranged on the body and a second transmission structure which is arranged on the lens module and is used for being matched with the first transmission structure so as to change the rotary motion into the linear motion; one end of the flexible transmission shaft is connected with the rotary driving piece, and the other end of the flexible transmission shaft is connected with the first transmission structure and used for transmitting torque to enable the first transmission structure and the rotary driving piece to synchronously rotate.
Under the drive of the rotary driving piece, the flexible transmission shaft effectively transmits the torque to the first transmission structure, and the rotary first transmission structure enables the two second transmission structures matched with the first transmission structure to do reverse linear motion, so that the adjustment of the distance between the two lens modules is realized.
The invention utilizes the flexible transmission shaft to connect the rotary driving piece and the first transmission structure which have space angle on the rotation center line, and effectively transmits the torque; compared with the technical scheme of adopting a multistage gear transmission mechanism for torque transmission, the torque transmission device has the advantages of simple structure, small occupied space and light weight, and is beneficial to the development of equipment towards miniaturization and light weight.
Drawings
FIG. 1 is a schematic structural diagram of a first embodiment of an intelligent head-mounted device of the present invention;
FIG. 2 is a schematic view of the structure of FIG. 1 from another perspective;
fig. 3 is a schematic structural diagram of the lens module, the interpupillary distance adjusting mechanism and the flexible transmission shaft in fig. 2;
FIG. 4 is a schematic view of the lens module of FIG. 3 in another configuration;
FIG. 5 is a schematic view of another structure of the lens module shown in FIG. 2;
FIG. 6 is a schematic structural diagram of a pupil distance adjusting mechanism in the second embodiment;
fig. 7 is a schematic structural view of a pupil distance adjusting mechanism in the second embodiment;
in the figure: the optical lens comprises a body 1, a shell 11, a support frame 12, a guide shaft 13, a lens module 2, a lens barrel 21, a connecting plate 22, a sliding seat 221, a notch 222, a sliding block 23, a pupil distance adjusting mechanism 3, a first transmission structure 31, a rotating shaft 311, a first worm 312, a second worm 313, a worm 314, a worm gear 315, a worm gear 316, a gear 317, a transmission shaft 318, a driving gear 318, a driven gear 319, a first rack structure 32, a second rack structure 33, a third rack structure 34, a 4-rotation driving part and a flexible transmission shaft 5.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The first embodiment is as follows:
shown collectively in fig. 1 to 4, the intelligent headset disclosed in this embodiment includes a body 1, two lens modules 2 disposed in the body 1, and a interpupillary distance adjusting mechanism 3 for realizing relative or back-to-back movement of the two lens modules 2. The main body 1 in this embodiment mainly includes a housing 11, a support frame 12 disposed in the housing 11, a display screen mounted on the support frame 12, a control unit, and the like.
Besides, the intelligent head-mounted device further comprises a rotary driving member 4 arranged on the housing 11 (or other places, and the arrangement position is reasonably selected according to the appearance requirement), and a flexible transmission shaft 5 arranged in the housing 11. The interpupillary distance adjusting mechanism 3 comprises a first transmission structure 31 which is rotatably arranged on the support frame 12 and a second transmission structure which is arranged on the lens module 2 and is used for being matched with the first transmission structure 31 to change the rotary motion into the linear motion; one end of the flexible transmission shaft 5 is connected to the rotary driving member 4, and the other end is connected to the first transmission structure 31, so as to transmit torque to make the first transmission structure 31 and the rotary driving member 4 rotate synchronously. Under the drive of the rotary driving part 4, the first transmission structure 31 makes the second transmission structures on the two lens modules 2 perform reverse linear motion, so as to realize pupil distance adjustment. The flexible transmission shaft 5 can be freely bent, can flexibly transmit rotary motion and torque to any position, and can reasonably utilize the limited installation space in the shell 11, thereby being beneficial to the development of head-wearing equipment towards miniaturization and light weight.
Wherein, the rotary driving member 4 is an operation knob or a driving motor. The flexible transmission shaft 5 is a steel wire flexible shaft, a steel belt flexible shaft, a universal shaft joint type flexible shaft or a spring type flexible shaft.
In this embodiment, the first transmission structure 31 includes a bidirectional worm structure rotatably mounted on the support frame 12 and connected to the flexible transmission shaft 5; the bidirectional worm structure comprises a rotating shaft 311, and a first worm 312 and a second worm 313 which are arranged on the rotating shaft 311 and have opposite spiral directions; the second transmission structure is the first rack structure 32, the first rack structure 32 on one lens module 2 is matched with the first worm 312, and the first rack structure 32 on the other lens module 2 is matched with the second worm 313. The flexible transmission shaft 5 transmits the torque from the rotary driving member 4 to the rotating shaft 311, the rotating shaft 311 drives the first worm 312 and the second worm 313 to rotate, and the two first rack structures 32 perform reverse linear motion, so that the two lens modules 2 move oppositely or oppositely. In still other embodiments, the bi-directional worm structure is an integrally formed bi-directional worm including a forward spiral segment and a reverse spiral segment.
The embodiment utilizes the principle that the worm and gear structure has self-locking performance, namely when the lead angle of the worm is smaller than the equivalent friction angle between the teeth of the meshing wheel, the worm and gear structure has self-locking performance, and can realize reverse self-locking, namely only the worm drives the worm wheel but not the worm wheel, and designs the interpupillary distance adjusting mechanism 3 with the self-locking function in the embodiment; that is, the first worm 312/the second worm 313 can drive the first rack structure 32 to move, and the first rack structure 32 cannot rotate the first worm 312/the second worm 313, so that the stability after the interpupillary distance is adjusted is ensured. In addition, the interpupillary distance adjusting mechanism 3 of the embodiment can also realize stepless adjustment of the interpupillary distance, and the flexibility of interpupillary distance adjustment is increased.
In this embodiment, the lens module 2 is slidably mounted on the rotating shaft 311 in the axial direction. The method specifically comprises the following steps: the lens module 2 comprises a lens barrel 21 and a connecting plate 22 arranged on the lens barrel 21, a sliding seat 221 is arranged on the connecting plate 22, the sliding seat 221 is in sliding fit with a rotating shaft 311, and the rotating shaft 311 not only can transmit power, but also can play a role in supporting and guiding the lens module 2; the connecting plate 22 is provided with a notch 222, the first worm 312 or the second worm 313 is arranged in the notch 222, and the first rack structure 32 is arranged on the groove wall of the notch 222.
In some embodiments where the inner space of the housing 11 is sufficient, the lens module 2 can be slidably mounted on the supporting frame 12 by means of a sliding rail and slider structure, and the rotating shaft 311 is only used for transmitting power.
When the interpupillary distance is adjusted, the stability of the movement of the lens module 2 is further ensured; the present embodiment further optimizes the above structure. As shown in fig. 2 and 5, the supporting frame 12 is additionally provided with a guiding shaft 13 extending along the adjusting direction of the lens module 2, the guiding shaft 13 and the rotating shaft 311 are located at the upper and lower sides of the lens module 2, and a slide block structure 23 in sliding fit with the guiding shaft 13 is arranged on the lens barrel 21 in the lens module 2.
In order to prevent the flexible transmission shaft 5 from rusting and affecting the torque transmission effect, the structure is optimized in the embodiment, and a flexible protective sleeve is sleeved outside the flexible transmission shaft 5; the middle part of the flexible protective sleeve is fixed on the housing 11, and in order not to affect the transmission of the torque by the flexible transmission shaft 5, one end of the flexible protective sleeve needs to be rotatably connected with the rotating shaft 311 of the first transmission structure 31, and the other end of the flexible protective sleeve needs to be rotatably connected with the rotary driving part 4.
Example two:
the present embodiment differs from the first embodiment in the interpupillary distance adjusting mechanism 3, and only differences will be described below.
As shown in fig. 2 and fig. 6 together, in the present embodiment, the first transmission structure 31 in the interpupillary distance adjusting mechanism 3 includes a worm 314 rotatably mounted on the support frame 12 and connected to the flexible transmission shaft 5, and a pair of duplicate gears are rotatably disposed on the support frames 12 on the left and right sides of the worm 314 respectively; the dual gear comprises a worm gear 315 and a gear 316, wherein the worm gear 315 is meshed with the worm 314; the second transmission structure is a second rack structure 33, the second rack structure 33 on one lens module 2 is meshed with one gear 316, and the second rack structure 33 on the other lens module 2 is meshed with the other gear 316. The interpupillary distance adjusting mechanism 3 in the embodiment also has a self-locking function; that is, the worm 314 can drive the worm wheel 315 to move, the worm wheel 315 cannot rotate the worm 314, and further the second rack structure 33 cannot rotate the worm 314, so that self-locking is realized, and the stability after pupil distance adjustment is ensured. In addition, the interpupillary distance adjusting mechanism 3 of the embodiment can also realize the stepless adjustment of the interpupillary distance, thereby increasing the flexibility of the interpupillary distance adjustment.
The flexible transmission shaft 5 transmits the torque from the rotary driving member 4 to the worm 314, the worm 314 drives the two pairs of duplicate gears (worm wheel 315 and gear 316) to rotate in opposite directions, and the two second rack structures 33 respectively matched with the two gears 316 perform opposite linear motions, so that the two lens modules 2 move oppositely or back to back.
Example three:
the present embodiment differs from the first embodiment in the interpupillary distance adjusting mechanism 3, and only differences will be described below.
In this embodiment, the first transmission structure 31 in the interpupillary distance adjusting mechanism 3 includes a transmission shaft 317 rotatably mounted on the support frame 12 and connected to the flexible transmission shaft 5, a driving gear 318 is disposed on the transmission shaft 317, and a driven gear 319 is rotatably mounted on each of the support frames 12 on the left and right sides of the driving gear 318; the second transmission structure is a third rack structure 34, the third rack structure 34 on one lens module 2 is engaged with one driven gear 319, and the third rack structure 34 on the other lens module 2 is engaged with the other driven gear 319.
In other embodiments, in order to make the pupil distance adjusting mechanism 3 have a self-locking function; the pinion gear 318 and the driven gear 319 are designed as a helical gear structure, and the third rack structure 34 is designed as a helical rack structure.
The flexible transmission shaft 5 transmits the torque from the rotary driving member 4 to the transmission shaft 317, the driving gear 318 drives the two driven gears 319 to rotate in opposite directions, and the two third rack structures 34 respectively matched with the two driven gears 319 perform linear motion in opposite directions, thereby realizing the relative or back-to-back motion of the two lens modules 2.
The invention utilizes the flexible transmission shaft 5 to connect the rotary driving piece 4 with a space angle on the rotation center line and the first transmission structure 31 (the rotating shaft 311, the worm 314 or the transmission shaft 317) and effectively transmit the torque; compared with the technical scheme of adopting a multistage gear transmission mechanism for torque transmission, the torque transmission device has the advantages of simple structure, small occupied space and light weight, and is beneficial to the development of equipment towards miniaturization and light weight. And the interpupillary distance adjusting mechanism in the invention can carry out the stepless adjustment of the interpupillary distance and the self-locking after the adjustment, thereby increasing the flexibility of the interpupillary distance adjustment and the stability after the adjustment.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. An intelligent head-mounted device comprises a body, two lens modules arranged in the body and a interpupillary distance adjusting mechanism for realizing the relative or opposite movement of the two lens modules; the flexible transmission device is characterized by further comprising a rotary driving piece arranged on the body and a flexible transmission shaft arranged in the body;
the pupil distance adjusting mechanism comprises a first transmission structure which is rotatably arranged on the body and a second transmission structure which is arranged on the lens module and is used for being matched with the first transmission structure so as to change the rotary motion into the linear motion;
one end of the flexible transmission shaft is connected with the rotary driving piece, and the other end of the flexible transmission shaft is connected with the first transmission structure and used for transmitting torque to enable the first transmission structure and the rotary driving piece to synchronously rotate.
2. The smart headset of claim 1, wherein the first transmission structure comprises a bi-directional worm structure rotatably mounted on the body and connected with the flexible transmission shaft;
the second transmission structure is a first rack structure, the first rack structure on one lens module is matched with the forward spiral part of the bidirectional worm structure, and the first rack structure on the other lens module is matched with the reverse spiral part of the bidirectional worm structure.
3. The intelligent headset of claim 2, wherein the bidirectional worm structure comprises a rotating shaft rotatably mounted on the body and connected with the flexible transmission shaft, and the rotating shaft is provided with a first worm and a second worm which have opposite spiral directions;
the lens module is installed on the rotating shaft in an axial sliding mode.
4. The intelligent head-mounted device according to claim 3, wherein the lens module comprises a lens barrel and a connecting plate arranged on the lens barrel, a sliding seat is arranged on the connecting plate, and the sliding seat is in sliding fit with the rotating shaft; the connecting plate is provided with a notch, the first worm or the second worm is arranged in the notch, and the first rack structure is arranged on the groove wall of the notch.
5. The intelligent head-mounted device according to claim 2, wherein a guide shaft is provided on the body, the guide shaft and the bidirectional worm structure are located on the upper and lower sides of the lens module, and a slider structure slidably engaged with the guide shaft is provided on the lens module.
6. The intelligent headset of claim 1, wherein the first transmission structure comprises a worm rotatably mounted on the body and connected to the flexible transmission shaft, and a pair of duplicate gears are rotatably disposed on the body on the left and right sides of the worm respectively; the duplicate gear comprises a worm wheel and a gear, and the worm wheel is meshed with the worm;
the second transmission structure is a second rack structure, the second rack structure on one of the lens modules is meshed with one of the gears, and the second rack structure on the other lens module is meshed with the other gear.
7. The intelligent headset of claim 1, wherein the first transmission structure comprises a transmission shaft rotatably mounted on the body and connected to the flexible transmission shaft, the transmission shaft is provided with a driving gear, and the body on the left and right sides of the driving gear is rotatably mounted with a driven gear respectively;
the second transmission structure is a third rack structure, the third rack structure on one of the lens modules is meshed with one of the driven gears, and the third rack structure on the other lens module is meshed with the other driven gear.
8. The smart headset of claim 1, wherein the flexible transmission shaft is externally sleeved with a flexible protective sheath; the middle part of flexible protective sheath is fixed on the body, one end with first drive structure rotates to be connected, the other end with the rotary driving spare rotates to be connected.
9. The smart headset of any one of claims 1 to 8, wherein the rotary drive is an operating knob or a drive motor.
10. The intelligent headset of any one of claims 1 to 8, wherein the flexible transmission shaft is a steel wire flexible shaft, a steel belt flexible shaft, a universal joint flexible shaft, or a spring-loaded flexible shaft.
Priority Applications (1)
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CN202111564815.9A CN114296236A (en) | 2021-12-20 | 2021-12-20 | Intelligent head-mounted equipment |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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CN202111564815.9A CN114296236A (en) | 2021-12-20 | 2021-12-20 | Intelligent head-mounted equipment |
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CN114296236A true CN114296236A (en) | 2022-04-08 |
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CN202111564815.9A Pending CN114296236A (en) | 2021-12-20 | 2021-12-20 | Intelligent head-mounted equipment |
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN114675423A (en) * | 2022-04-12 | 2022-06-28 | 闪耀现实(无锡)科技有限公司 | Head-mounted display device |
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CN108563021A (en) * | 2018-03-16 | 2018-09-21 | 京东方科技集团股份有限公司 | Interpupillary distance regulating device wears display equipment and step by step regulating mechanism |
CN110596899A (en) * | 2019-10-12 | 2019-12-20 | 广州林电科技有限公司 | VR glasses with adjust interpupillary distance function convenient to accomodate |
CN212160233U (en) * | 2020-05-12 | 2020-12-15 | 歌尔智能科技有限公司 | Pupil distance adjustable head-mounted display device |
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2021
- 2021-12-20 CN CN202111564815.9A patent/CN114296236A/en active Pending
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DE102004026509A1 (en) * | 2004-05-19 | 2005-12-15 | Hensoldt Ag | Device for setting distance of eyepiece lenses from optical axis in binocular optical apparatus, has pivoting movement of both lenses derived from common threaded spindle |
US20100044656A1 (en) * | 2008-02-25 | 2010-02-25 | Kenji Imase | Worm-rack type transmission device |
CN106773059A (en) * | 2017-01-18 | 2017-05-31 | 北京小鸟看看科技有限公司 | A kind of Flexible Transmission governor motion |
CN206557477U (en) * | 2017-01-23 | 2017-10-13 | 深圳市大疆创新科技有限公司 | Wearable device |
CN108501652A (en) * | 2017-02-24 | 2018-09-07 | 株式会社万都 | Active roll control equipment |
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CN114675423A (en) * | 2022-04-12 | 2022-06-28 | 闪耀现实(无锡)科技有限公司 | Head-mounted display device |
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Effective date of registration: 20221130 Address after: 266104 No. 500, Songling Road, Laoshan District, Qingdao, Shandong Applicant after: GOERTEK TECHNOLOGY Co.,Ltd. Address before: 261031 workshop 1, phase III, Geer Photoelectric Industrial Park, 3999 Huixian Road, Yongchun community, Qingchi street, high tech Zone, Weifang City, Shandong Province Applicant before: GoerTek Optical Technology Co.,Ltd. |