Electronic device comprising a balancing device

Abstract

An electronic device including a balancing device is disclosed. The invention discloses a wearable electronic device and a use method thereof. The wearable electronic device comprises a balance device used for adjusting a balance point of the wearable electronic device. In one example, a head-mountable electronic device includes a display unit, a securing strap coupled to the display unit, a head strap including a first end secured to the securing strap and a second end secured to the securing strap, and a balancing device coupled to the securing strap between the first end and the second end. A distance between the balancing device and the first end may be adjustable.

Description

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims the benefit of U.S. Provisional Patent Application No. 63 / 585,864, filed on September 27, 2023, entitled “ELECTRONIC DEVICE INCLUDING COUNTERBALANCE,” the entire disclosure of which is hereby incorporated by reference into this document. Technical Field

[0003] The embodiments generally relate to electronic devices and more particularly to head-mounted electronic devices. Background Art

[0004] Recent advances in portable computing have enabled head-mounted devices to provide augmented reality and virtual reality experiences to users. Various components of these devices, such as display screens, viewfinders, fixed arms, speakers, batteries, and other components work together to provide an immersive and comfortable experience. The components of these devices that provide a visual display to the user are relatively heavy and positioned toward the front of the user's head. This results in devices that are generally front-heavy and unbalanced. It is desirable to provide a head-mounted device that is balanced and comfortable to wear. Summary of the invention

[0005] In at least one example of the present disclosure, a head-mounted electronic device includes a display unit, a fixing strap connected to the display unit, a head strap including a first end fixed to the fixing strap and a second end fixed to the fixing strap, and a balancing device connected to the fixing strap between the first end and the second end. The distance between the balancing device and the first end may be adjustable.

[0006] In some examples, the balancing device is a first balancing device. The head-mounted electronic device may also include a second balancing device connected to the fixing band between the first end and the second end. In some examples, the distance is a first distance. The second distance between the second balancing device and the second end may be adjustable.

[0007] In some examples, the balancing device may include electronic components of a head-mountable electronic device. In some examples, the electronic components may include a battery electrically coupled to the display unit.

[0008] In some examples, the fixing strap may include a first portion and a second portion, the first portion including two opposite ends coupled to the display unit, the second portion overlapping the first portion between the first end and the second end. The second portion may be adjustable relative to the first portion. The balancing device may be connected to one of the following items: the first portion between the first end and the second end, or the second portion. In some examples, the length of the other of the first portion or the second portion may be adjustable.

[0009] In some examples, the balancing device may be slidably connected to the fixing belt. In some examples, the head-mounted electronic device may further include a piston. The balancing device may be adjustably connected to the fixing belt via the piston.

[0010] In at least one example of the present disclosure, a wearable electronic device includes a display unit and a fixing assembly. The fixing assembly may include: a first band having a first end fixed to the display unit and a second end fixed to the display unit; a second band connected to the first band at a first pivot between the first end and the second end and at a second pivot between the first end and the second end; a first balancing device that can be adjustably fixed to the first band between the first pivot and the second pivot; and a second balancing device that can be adjustably fixed to the first band between the first pivot and the second pivot.

[0011] In some examples, the display unit may include a display screen, and the first balancing device may include a battery electrically coupled to the display screen.

[0012] In some examples, the wearable electronic device may further include an actuator. The actuator may be configured to automatically adjust a first distance between the first balancing device and the first pivot and a second distance between the second balancing device and the second pivot. In some examples, the wearable electronic device further includes a controller electrically coupled to the actuator and configured to cause the actuator to adjust the first distance and the second distance based on a change in the length of the first band. In some examples, the first balancing device and the second balancing device can be manually adjusted.

[0013] In at least one example of the present disclosure, a head-mounted display device includes a display unit, a balancing device, a fixing strap extending between the display unit and the balancing device, and a head strap coupled to the fixing strap to define a pivot between the display unit and the balancing device. A first force arm may be defined between the pivot and the display unit. A second force arm may be defined between the pivot and the balancing device. The second force arm may be adjustable.

[0014] In some examples, the balancing device may be adjustably connected to the fixing strap. The balancing device may be adjustable so that the first force arm and the second force arm are balanced. In some examples, the head-mounted display device may also include an actuator mechanically coupled to the balancing device and a controller electrically coupled to the actuator. The controller may be configured to cause the actuator to adjust the position of the balancing device so that the first force arm and the second force arm are balanced. In some examples, the adjustment of the position of the balancing device may be based on a change in the length of the fixing strap.

[0015] In some examples, the head-mounted display device further comprises an adjustment mechanism configured to adjust the length of the fixing strap. In some examples, the second force arm is adjustable independently of the adjustment of the length of the fixing strap. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The present disclosure will be readily understood through the following detailed description in conjunction with the accompanying drawings, in which like reference numerals represent like structural elements, and in which:

[0017] Figure 1 A perspective view of a head mountable device is shown.

[0018] Figure 2 A side view of a head mountable device worn by a user is shown.

[0019] Figure 3A A side view of a head mountable device including a balancing device worn by a user is shown.

[0020] Figure 3B A side view of a head mountable device including a balancing device worn by a user is shown.

[0021] Figure 4 A side view of a head mountable device including an extendable balancing device worn by a user is shown.

[0022] Figure 5 A perspective view of a head mountable device including a slidable balancing device is shown.

[0023] Figure 6 A perspective view of a head mountable device including a piston balancing apparatus is shown.

[0024] Figure 7 A top view of a head mountable device including overlapping straps with a balancing device is shown.

[0025] Fig. 8A A top view of a head mountable device including an adjustable strap with a balancing device worn by a user is shown.

[0026] Figure 8BA top view of a head mountable device including an adjustable strap with a balancing device worn by a user is shown.

[0027] Fig. 9 A top view of a head mountable device including a balancing device worn by a user is shown.

[0028] Fig.10 A top view of a head mountable device including a balancing device worn by a user is shown. DETAILED DESCRIPTION

[0029] Reference will now be made in detail to the representative embodiments illustrated in the accompanying drawings. It should be understood that the following description is not intended to limit the embodiments to a preferred embodiment. On the contrary, it is intended to cover substitutions, modifications and equivalents that may be included in the essence and scope of the described embodiments defined by the appended claims.

[0030] The following disclosure relates to wearable electronic devices, such as head-mounted devices (HMDs). More specifically, the present example relates to a balancing device for an HMD that can be used to balance the weight of a display component of the HMD.

[0031] In at least one example, a head-mountable device may include a display unit and a fixing strap extending from the display unit. The head-mountable device may be fixed to the user's head by the fixing strap so that the display screen of the display unit is positioned in front of the user's eyes. The display unit may be relatively heavy compared to the fixing strap and other components of the head-mountable device disposed behind the display unit. This results in an unbalanced head-mountable device, in which most of the weight of the display unit is supported by the user's face.

[0032] The head-mounted device of the present disclosure includes a balancing device that can be mounted on a fixed strap to balance the weight of a display unit. As will be discussed in detail below, the balancing device can be movable and can be adjusted to balance the head-mounted device, even when the head-mounted device is worn by a user with a different head shape and size. The balancing device can be attached to the fixed strap, or can extend from the fixed strap. The balancing device can be automatically or manually actuated. The amount of balance provided by the balancing device can be adjusted based on user preferences. In some examples, the top strap can be connected to the fixed strap, and the attachment position or angle of the top strap relative to the fixed strap can be adjustable to adjust the balance point of the head-mounted device. Sensors can be provided in the head-mounted device, such as in the display unit, the fixed strap, and / or the top strap, to determine the balance of the head-mounted device and help adjust the balancing device. When wearing the head-mounted device, the balancing device reduces the weight of the user's face, balances the head-mounted device, and improves user comfort.

[0033] References below Figures 1 to 10to discuss these examples and other examples. However, those skilled in the art will readily appreciate that the detailed description given herein with respect to these figures is for illustrative purposes only and should not be construed as limiting. In addition, as used herein, a system, method, article, component, feature, or sub-feature comprising at least one of a first option, a second option, or a third option should be understood to refer to a system, method, article, component, feature, or sub-feature that may include one of each listed option (e.g., only one first option, only one second option, only one third option), multiple of a single listed option (e.g., two or more first options), two options at the same time (e.g., one first option and one second option), or a combination thereof (e.g., two first options and one second option).

[0034] Figure 1 and Figure 2 A head-mounted device (HMD) 100 including a display unit 102, a fixing strap 104, and a top strap 106 is illustrated. The top strap 106 is optional and may be omitted in some embodiments. A first end 108a and a second end 108b (e.g., opposite ends) of the fixing strap 104 may be connected to the display unit 102. The fixing strap 104 may extend distally from the display unit 102 relative to the user's head 101, or extend rearwardly from the display unit 102. A first end 110a and a second end 110b of the top strap 106 may be connected to the fixing strap 104, forming a first pivot 116a and a second pivot 116b, respectively. The top strap 106 may extend upward from the fixing strap 104 relative to the user's head 101. The fixing strap 104 and / or the top strap 106 may be used to keep the HMD 100 on the user's head 101 so that the display unit 102 is located in front of the user's eyes. In some examples, the securing strap 104 and the overhead strap 106 (including components connected thereto) may form a securing assembly.

[0035] The display unit 102 may include one or more optical lenses or display screens configured to be positioned in front of the user's eyes. Figure 2 As shown, the display unit 102 may include a display 112 configured to present an augmented reality visualization, a virtual reality visualization, or other suitable visualization to a user. The display 112 may be at least partially positioned in or on a frame, which may be a housing of the display unit 102.

[0036] The user's head 101 can bear the weight of the HMD 100 through the normal force between the top strap 106 and the top of the user's head, the normal force between the display unit 102 and the user's nose, the normal force between the fixing strap 104 and the user's ears, and / or the friction between the display unit 102, the fixing strap 104, and the top strap 106. The top strap 106 can be configured so that most of the weight of the HMD 100 is carried by the user's head 101 through the normal force between the top strap 106 and the user's head 101. However, the display unit 102 may include relatively heavy components of the HMD 100, such as a frame, a display screen (e.g., display 112), optical lenses, electronic components, etc., which are used to transmit visualization to the user. In contrast, the fixing strap 104 and the top strap 106 can be relatively light. Therefore, the balance point of the HMD 100 can be biased forward toward the display unit 102 relative to the user's head 101. This causes the HMD 100 to be unbalanced, so that most of the weight of the HMD 100 is transferred to the user's face through the display unit 102. This may reduce comfort, especially when the HMD 100 is worn for a long period of use.

[0037] In some examples, the weight of HMD 100 may be balanced by providing a balancing device 114 on strap 104. For example, Figure 2 As shown, the balancing device 114 may be disposed on the fixing strap 104 relative to the top strap 106, opposite the display unit 102. The position of the balancing device 114 may be adjustable, thereby allowing the HMD 100 to be balanced regardless of different head sizes, etc., of the user wearing the HMD 100.

[0038] The balancing device 114 may be adjusted by a manual actuator or an automatic actuator. The balancing device 114 may be adjusted by manual actuation by adjusting a dial on the fixing belt 104, sliding the balancing device 114 relative to the fixing belt 104, rotating the balancing device 114 relative to the fixing belt 104, retracting the balancing device 114 relative to the fixing belt 104, etc. The balancing device 114 may be slidably connected to the fixing belt 104, rotatably connected to the fixing belt 104, etc.

[0039] The balance device 114 may be adjusted by automatic actuation via a motor, a piston, or the like. For example, a controller of the HMD 100 may be electrically coupled to a motor that may adjust the balance device 114 in response to a signal from the controller. The controller may signal the motor to adjust the position of the balance device 114 so that the force arms from the balance device 114 and the display unit 102 are balanced. In some examples, the user's face may be scanned, the user's head size may be estimated, and the balance device 114 may be automatically adjusted based on this facial scan and the estimated head size. In some examples, the user may adjust the length of the strap 104 based on their head size, and the balance device 114 may be adjusted based on the adjustment of the strap length. Adjustment of the balance device 114 may be automatic, either by adjusting the length of the strap 104 directly at the location of the balance device 114 (e.g., a dial that adjusts the length of the strap 104 also adjusts the position of the balance device 114), or by automatic actuation that adjusts the position of the balance device 114 based on the length of the strap 104.

[0040] An actuator for adjusting the position of the balancing device 114 may be included in the display unit 102, the strap 104, and / or the balancing device 114. In some examples, the mass of the balancing device 114, rather than the position of the balancing device 114, may be adjustable, such as by adding or removing mass (e.g., water, sand, metal, a battery pack, other relatively heavy material, etc.) from the balancing device 114.

[0041] The balancing device 114 may include functional components and / or non-functional components of the HMD 100. In examples where the balancing device 114 includes functional components of the HMD 100, the balancing device 114 may include electronic components (e.g., a battery, a processor, a speaker, a memory component, a motor, etc.), a tension regulator, a turntable, an actuator, etc. In examples where the balancing device 114 includes non-functional components of the HMD 100, the balancing device 114 may include a housing, its own weight, aesthetic components of the HMD 100, etc. The mass of the balancing device 114 may be adjustable, such as by adding or removing the mass of the housing. In some examples, the balancing device 114 may include a battery of the HMD 100, and an additional battery pack may be coupled to the balancing device 114 to increase the mass of the balancing device 114.

[0042] The balancing device 114 and the display unit 102 may apply a moment to the top band 106 around pivots 116a, 116b formed at both ends 110a, 110b of the top band 106 connected to the fixing band 104. This may apply a torque to the top band 106 when the moments of the balancing device 114 and the display unit 102 are unbalanced. Balancing the moments applied by the balancing device 114 and the display unit 102 balances the HMD 100 so as not to apply a torque to the top band 106. The moments applied by the balancing device 114 and the display unit 102 may be balanced by adjusting the mass of the balancing device 114, adjusting the position of the balancing device 114, and / or adjusting the positions of the pivots 116a, 116b. When the moments applied to the pivots 116a, 116b by the display unit 102 and the balancing device 114 are equal, the HMD 100 may be balanced. In some examples, the HMD 100 may be considered to be balanced within a range. For example, the HMD 100 may be considered balanced when the moment applied by the balance device 114 is within a range of 50% to 125%, 80% to 110%, 95% to 105%, etc. of the moment applied by the display unit 102. The balance of the HMD 100 may vary from 100% based on user preferences, etc. In some examples, a user of the HMD 100 may be associated with a user profile that stores user preferences related to the balance of the HMD 100.

[0043] In some examples, the weight of the HMD 100 can be balanced by adjusting the position of the top strap 106 relative to the fixed strap 104. Specifically, the connection points between the first end 110a and the second end 110b of the top strap 106 and the fixed strap 104 can be moved forward or backward relative to the user's head 101 (e.g., moved proximally or distally relative to the display unit 102) to move the first pivot 116a and the second pivot 116b forward or backward, respectively. Moving the pivots 116a, 116b forward relative to the user's head 101 causes the display unit 102 to have a shorter moment arm relative to the balancing device 114, and moves the balance point of the HMD 100 backward. Moving the pivots 116a, 116b backward relative to the user's head 101 causes the display unit 102 to have a longer moment arm relative to the balancing device 114, and moves the balance point of the HMD 100 forward.

[0044] In addition, the positions of the fixing strap 104 and the top strap 106 on the user's head 101 can be adjusted, so that the position on the user's head 101 that carries the weight of the HMD 100 can be moved. For example, the top strap 106 can be moved forward or backward relative to the user's head 101, and the fixing strap 104 can be moved upward or downward relative to the user's head 101. The fixing strap 104 can extend from the display unit 102 at a vertical angle or an inclined angle relative to the display unit 102 and gravity. The top strap 106 can extend from the fixing strap 104 at a parallel angle or an inclined angle relative to gravity and at a vertical angle or an inclined angle relative to the fixing strap 104. The top strap 106 can be angled perpendicular to or obliquely to the fixing strap 104. The user can adjust the angles of the fixing strap 104 and the top strap 106 when they wear the HMD 100, so as to achieve a comfortable fit and balance of the HMD 100 on the user's head 101.

[0045] Balancing the weight of the HMD 100 can move the weight of the HMD 100 (e.g., the display unit 102) away from the user's face. Balancing the weight of the HMD 100 can cause the top of the user's head 101 to carry a higher percentage of the weight of the HMD 100 through the top strap 106. Balancing the weight of the HMD 100 can provide a lower perceived weight of the HMD 100. All of these benefits can increase the user's comfort when wearing the HMD 100.

[0046] The HMD 100 may further include a force sensor, which may be provided in the display unit 102, the fixing strap 104, and / or the top strap 106. The force sensor may be provided between the display unit 102, the fixing strap 104, and / or the top strap 106 and the user's head 101. The force sensor may detect the force between the HMD 100 and the user's head 101. This force data may be used to determine whether the HMD 100 is balanced. If the HMD 100 is unbalanced, the balance device 114 may be automatically adjusted, or the user may be instructed to manually adjust the balance device 114 in order to correct the balance of the HMD 100. For example, the HMD 100 may control an automatic actuator to adjust the balance device 114, thereby adjusting the balance of the HMD 100. The HMD 100 may provide instructions to the user to manipulate a manual actuator to adjust the balance device 114, thereby adjusting the balance of the HMD 100.

[0047] The strap 104 may also include one or more electronic components, such as a first electronic component 118 and a second electronic component 120. The electronic components 118, 120 may include any number of electronic components and may be configured to operate through the HMD 100 and provide a virtual or augmented reality experience to the user. The electronic components 118, 120 may include a projector, a waveguide, a speaker, a processor, or a memory component. In examples where the electronic components 118, 120 include a projector and / or a waveguide, the projector and / or the waveguide may be configured to project light displayed on the display 112.

[0048] The balancing device 114 and the electronic components 118, 120 may be disposed within the interior volume of the HMD 100 (e.g., within the interior volume of the fixing band 104) so ​​as to hide these components from view. Alternatively, one or more of the balancing device 114 and the electronic components 118, 120 may be disposed on the HMD 100, such as on the housing of the fixing band 104.

[0049] Figure 3A and Figure 3B 300a and 300b are shown as alternative lever arms for HMDs 300a and 300b worn on a user's head 301. HMDs 300a and 300b may be used with respect to Figure 1 and Figure 2 The HMD 100 illustrated and discussed is the same or similar and includes the same or similar components. For example, HMDs 300a and 300b may include a display unit 302, a strap 304 extending from and connected to the display unit 302, and overhead straps 306a, 306b extending from and connected to the strap 304. The strap 304 may be connected to the display unit 302 at an end 308, and the overhead straps 306a, 306b may be connected to the strap 304 at ends 310a, 310b (defining pivots 320a, 320b). A counterweight 312 may be connected to the strap 304, opposite the display unit 302.

[0050] Figure 3A A centered configuration of HMD 300a is illustrated. Figure 3A In the example of FIG. 3 , a first distance D1 between the center of mass 314 of the display unit 302 and the center of mass 318a of the top strap 306a (defined at the pivot 320a) is equal to a second distance D2 between the center of mass 318a of the top strap 306a and the center of mass 316 of the balancing device 312. In this example, the HMD 300a can be balanced by using a balancing device 312 having the same mass as the display unit 302.

[0051] Figure 3B An eccentric configuration of HMD 300b is illustrated. Figure 3BIn the example of FIG. 3 , a first distance D3 between the center of mass 314 of the display unit 302 and the center of mass 318b of the top strap 306b (defined at the pivot 320b) is greater than a second distance D4 between the center of mass 318b of the top strap 306b and the center of mass 316 of the balancing device 312. In this example, the HMD 300b can be balanced by using a balancing device 312 having a greater mass than the display unit 302.

[0052] based on Figure 3A and Figure 3B In the example of FIG. 3 , the position of the top straps 306a, 306b and the mass of the counterbalance 312 may be selected to achieve a balanced HMD 300a, 300b. The position of the top straps 306a, 306b moved forward relative to the user's head 301 may be used to allow a relatively light counterbalance 312 to balance the display unit 302. This may reduce the weight of the HMD 300a, 300b, and may reduce the volume of the counterbalance 312. The top straps 306a, 306b may be positioned in a desired position based on user comfort, and the position and mass of the counterbalance 312 may be selected accordingly.

[0053] Figure 4 The HMD 400 is illustrated as including an extendable counterweight 412 worn on a user's head 401. The HMD 400 may be used with respect to Figures 1 to 3B The illustrated and discussed HMDs 100, 300a, 300b are the same or similar and include the same or similar components. For example, the HMD 400 may include a display unit 402, a strap 404 extending from and connected to the display unit 402, and a head strap 406 extending from and connected to the strap 404. The strap 404 may be connected to the display unit 402 at an end 408, and the head strap 406 may be connected to the strap 404 at an end 410 (defining a pivot 422). A counterbalance device 412 may be connected to the strap 404, opposite the display unit 402, via an adjustment mechanism 420 (also referred to as an extension or extension mechanism).

[0054] exist Figure 4 In the embodiment, the top strap 406 can be positioned at a central position in the front-to-back direction relative to the user's head 401. However, the top strap 406 can be positioned at Figure 4 The position shown is forward or backward, and the fixing belt 404 and / or the headband 406 can be relative to Figure 4The configuration shown is angled. The moment arm between the display unit 402 and the pivot 422 can be defined by the mass of the display unit 402 and the distance D5 between the center of mass 414 of the display unit 402 and the center of mass 418 of the top strap 406 (defined at the pivot 422). The moment arm between the balance device 412 and the pivot 422 can be defined by the mass of the balance device 412 and the distance D6 between the center of mass 416 of the balance device 412 and the center of mass 418 of the top strap 406 (defined at the pivot 422).

[0055] The adjustment mechanism 420 can be used to adjust the distance D6, thereby adjusting the moment arm provided by the balance device 412 and the balance of the HMD 400. The adjustment mechanism 420 can be extended to move the balance device 412 backward relative to the user's head 401 and distally relative to the display unit 402, thereby increasing the moment arm provided by the balance device 412, and moving the balance point of the HMD 400 backward relative to the user's head 401 and distally relative to the display unit 402. The adjustment mechanism 420 can be retracted to move the balance device 412 forward relative to the user's head 401 and proximally relative to the display unit 402, thereby reducing the moment arm provided by the balance device 412, and moving the balance point of the HMD 400 forward relative to the user's head 401 and proximally relative to the display unit 402. In some examples, the distance D6 and the moment arm provided by the balance device 412 can be adjusted by rotating the adjustment mechanism 420 and the balance device 412 relative to the fixing strap 404. For example, rotating the adjustment mechanism 420 and the balancing device 412 so that the longitudinal axis of the adjustment mechanism 420 is closer to being parallel to the longitudinal axis of the fixing belt 404 can increase the distance D6, while rotating the adjustment mechanism 420 and the balancing device 412 so that the longitudinal axis of the adjustment mechanism 420 is farther away from being parallel to the longitudinal axis of the fixing belt 404 can decrease the distance D6.

[0056] The adjustment mechanism 420 may include a belt, a turntable, a telescopic tube, a hinge, etc. that slide relative to each other. The adjustment mechanism 420 may be automatically actuated, such as by a motor, a piston, or a combination thereof. The actuation of the adjustment mechanism 420 may be controlled by the HMD 400. In some examples, the user's face may be scanned, the user's head size may be estimated, and the adjustment mechanism 420 may be automatically adjusted based on this facial scan and the estimated head size. The adjustment mechanism 420 may be manually actuated, such as by the user's manipulation of the HMD 400. The HMD 400 may prompt the user to manipulate the adjustment mechanism 420 in order to accurately adjust the balance of the HMD 400, or the user may adjust the adjustment mechanism 420 by feel. The adjustment mechanism 420 may be part of or coupled to the fixed strap 404 and / or the balance device 412.

[0057] Figure 5The HMD 500 includes sliding balancing devices 512a, 512b. The HMD 500 may be used with respect to Figures 1 to 3B The illustrated and discussed HMDs 100, 300a, 300b are the same or similar and include the same or similar components. For example, the HMD 500 may include a display unit 502, a fixed strap 504 extending from and connected to the display unit, and a headband 506 extending from and connected to the fixed strap 504. The fixed strap 504 may be connected to the display unit 502 at ends 508a, 508b, and the headband 506 may be connected to the fixed strap 504 at ends 510a, 510b (defining pivots 520a, 520b). The display unit 502 may include a display 516 configured to present an augmented reality visualization, a virtual reality visualization, or other suitable visualization to a user. The fixed strap 504 may include an electronic component 518 that may be configured to operate through the HMD 500 and provide a virtual or augmented reality experience to the user. The electronic component 518 may include a projector, a waveguide, a speaker, a processor, or a memory component.

[0058] Each of the balancing devices 512a, 512b may be connected to the fixing belt 504 in the corresponding track 514a, 514b. The balancing devices 512a, 512b may be moved proximally or distally along the tracks 514a, 514b relative to the display unit 502, or forwardly or backwardly relative to the user wearing the HMD 500, to balance the HMD 500. Moving the balancing devices 512a, 512b proximally or distally relative to the pivots 520a, 520b respectively reduces or increases the moment arm applied by the balancing devices 512a, 512b, which may be used to balance the weight of the HMD 500 between the display unit 502 and the balancing devices 512a, 512b.

[0059] In some examples, the counterbalances 512a, 512b may be automatically moved by a motor or other electronic actuator controlled by the HMD 500. In some examples, the user's face may be scanned, the user's head size may be estimated, and the counterbalances 512a, 512b may be automatically adjusted based on the face scan and the estimated head size. In some examples, the counterbalances 512a, 512b may be manually actuated or adjusted. For example, a user of the HMD 500 may directly manipulate the counterbalances 512a, 512b, or may manipulate a dial or other adjustment mechanism to adjust the position of the counterbalances 512a, 512b. Balancing the weight of the HMD 500 may move the weight of the HMD 500 (e.g., the display unit 502) away from the user's face, transfer the weight of the HMD 500 to the top of the user's head via the top strap 506, provide a lower perceived weight of the HMD 500, and improve user comfort when wearing the HMD 500.

[0060] Figure 6 The HMD 600 is illustrated as including piston-actuated balancing devices 612a, 612b. The HMD 600 may be used with respect to Figures 1 to 3B The illustrated and discussed HMDs 100, 300a, 300b are the same or similar and include the same or similar components. For example, the HMD 600 may include a display unit 602, a strap 604 extending from and connected to the display unit 602, and a headband 606 extending from and connected to the strap 604. The strap 604 may be connected to the display unit 602 at ends 608a, 608b, and the headband 606 may be connected to the strap 604 at ends 610a, 610b (defining pivots 622a, 622b). The display unit 602 may include a display 616 configured to present an augmented reality visualization, a virtual reality visualization, or other suitable visualization to a user. The strap 604 may include electronic components 618, 620 that may be configured to operate through the HMD 600 and provide a virtual or augmented reality experience to the user. The electronic components 618 , 620 may include a projector, a waveguide, a speaker, a processor, or a memory component.

[0061] Each of the balancing devices 612a, 612b may be connected to the fixing belt 604 with a corresponding piston 614a, 614b. In other words, the pistons 614a, 614b may be connected to the fixing belt 604, and the balancing devices 612a, 612b may be connected to the corresponding pistons 614a, 614b. The pistons 614a, 614b may move the balancing devices 612a, 612b proximally or distally relative to the display unit 602 or forward or backward relative to the user wearing the HMD 600 to balance the HMD 600. Moving the balancing devices 612a, 612b proximally or distally relative to the pivots 622a, 622b respectively reduces or increases the force arm applied by the balancing devices 612a, 612b, which may be used to balance the weight of the HMD 600 between the display unit 602 and the balancing devices 612a, 612b.

[0062] In some examples, the pistons 614a, 614b can automatically move the balancing devices 612a, 612b via a motor or other electronic actuator controlled by the HMD 600. In some examples, the user's face can be scanned, the user's head size can be estimated, and the pistons 614a, 614b can automatically adjust the position of the balancing devices 612a, 612b based on this facial scan and the estimated head size. In some examples, the pistons 614a, 614b can be manually actuated to adjust the position of the balancing devices 612a, 612b. For example, the user of the HMD 600 can directly manipulate the balancing devices 612a, 612b (where the pistons 614a, 614b keep the balancing devices 612a, 612b in a desired position), or can manipulate a dial or other adjustment mechanism to adjust the position of the balancing devices 612a, 612b via the pistons 614a, 614b. Balancing the weight of the HMD 600 can move the weight of the HMD 600 (e.g., the display unit 602) away from the user's face, transfer the weight of the HMD 600 to the top of the user's head through the top strap 606, provide a lower perceived weight of the HMD 600, and improve the user's comfort when wearing the HMD 600.

[0063] Figure 7 The HMD 700 is illustrated as including two separate straps for independently adjusting the tension of the fixing strap 704 on the user's head and adjusting the balance of the HMD 700 on the user's head. Figures 1 to 3B The illustrated and discussed HMDs 100, 300a, 300b are the same or similar and include the same or similar components. For example, the HMD 700 may include a display unit 702, a fixed strap 704 extending from and connected to the display unit 702, and a headband 706 extending from and connected to the fixed strap 704. The fixed strap 704 may be connected to the display unit 702 at ends 708a, 708b, and the headband 706 may be connected to the fixed strap 704 at ends 710a, 710b (defining pivots 722a, 722b). The display unit 702 may include a display configured to present an augmented reality visualization, a virtual reality visualization, or other suitable visualization to a user. The fixed strap 704 may include electronic components that may be configured to operate through the HMD 700 and provide a virtual or augmented reality experience to the user. These electronic components may include a projector, a waveguide, a speaker, a processor, or a memory component. In some examples, the securing strap 704 and the overhead strap 706 (including components connected thereto) may form a securing assembly.

[0064] The strap 704 may include an adjustable strap 712 configured to adjust the tension of the strap 704 relative to the user's head and a balance strap 716 configured to adjust the balance of the strap 704. The adjustable strap 712 and the balance strap 716 may be part of the strap 704. The adjustable strap 712 may include a tension adjustment system to adjust the tension in the adjustable strap 712. For example, Figure 7 As shown, the tension adjustment system can move the adjustable strap 712 in direction 718 to tighten the adjustable strap 712 or can move the adjustable strap 712 in direction 720 to loosen the adjustable strap 712. The tension in the tension adjustment system can be changed by adjusting a dial, a rack and pinion system, a gear drive system, etc., and can be automatically adjusted (by an electric actuator, etc.) or manually adjusted (by user manipulation, etc.). The adjustable strap 712 may include an elastic portion that stretches and facilitates wearing and taking off the HMD 700. The adjustable strap 712 may be included to provide an adjustment to the fit of the HMD 700 for a variety of user head sizes and shapes.

[0065] The balance strap 716 may include a balance device 714, and both the balance strap 716 and the balance device 714 may be configured to balance the moment arm of the display unit 702 around the pivots 722a, 722b. In some examples, the balance device 714 may be movable relative to the balance strap 716. For example, the position of the balance device 714 may be adjustable in a proximal or distal direction relative to the display unit 702, or in a forward or rearward direction relative to the user's head. Moving the balance device 714 proximally or distally relative to the pivots 722a, 722b reduces or increases the moment arm applied by the balance device 714, respectively, which can be used to balance the weight of the HMD 700 between the display unit 702 and the balance device 714. In some examples, the balance device 714 may be automatically moved by a motor or other electronic actuator controlled by the HMD 700. In some examples, the balance device 714 may be manually actuated or adjusted. For example, a user of HMD 700 may manipulate gimbal 714 directly, or may manipulate a dial or other adjustment mechanism to adjust the position of gimbal 714 .

[0066] In some examples, the relative positions of the display unit 702, the pivots 722a, 722b, and the balancing device 714 can remain fixed, while the adjustable strap 712 is used to adjust the tension applied to the user's head by the fixed strap 704. The balancing strap 716 can be provided with a certain length, and the balancing device 714 can be provided with a certain mass to provide a moment arm around the pivots 722a, 722b for balancing the display unit 702. Even when the tension provided by the adjustable strap 712 changes for users with different head sizes, the relative positions of the display unit 702, the pivots 722a, 722b, and the balancing device 714 can remain fixed so that the balance of the HMD 700 remains unchanged.

[0067] In some examples, the balance strap 716 can be formed of a relatively rigid material that maintains the position of the balance device 714. In some examples, the balance strap 716 can be formed of a flexible, elastic material that can deform and return to its original shape. This can allow the balance strap 716 and the balance device 714 to move to a comfortable position when the user rests their head on a surface (e.g., a headrest, a pillow, etc.), and return to the original position when the user removes their head from the surface.

[0068] Balancing the weight of the HMD 700 can move the weight of the HMD 700 (e.g., the display unit 702) away from the user's face, transfer the weight of the HMD 700 to the top of the user's head through the top strap 706, provide a lower perceived weight of the HMD 700, and improve the user's comfort when wearing the HMD 700.

[0069] In some examples, one of the adjustable strap 712 or the balance strap 716 may include ends 708a, 708b attached to the display unit 702, and the other of the adjustable strap 712 or the balance strap 716 may be attached to the one of the adjustable strap 712 or the balance strap 716. The adjustable strap 712 and the balance strap 716 may at least partially overlap. In some examples, each of the adjustable strap 712 and the balance strap 716 may be attached to an additional portion of the fixed strap 704. In some examples, the adjustable strap 712, the balance strap 716, and the overhead strap 706 may be attached to the additional portion at pivots 722a, 722b.

[0070] Fig. 8A and Figure 8B The HMD 800 is illustrated as being worn by users having different head sizes. More specifically, Fig. 8A An HMD 800 is illustrated which is worn by a user 801a having a relatively large head, and Figure 8B The HMD 800 is shown as being worn by a user 801b having a relatively small head. Figures 1 to 3BThe illustrated and discussed HMDs 100, 300a, 300b are the same or similar and include the same or similar components. For example, the HMD 800 may include a display unit 802, a fixed strap 804 extending from and connected to the display unit, and a headband 806 extending from and connected to the fixed strap 804. The fixed strap 804 may be connected to the display unit 802 at ends 816a, 818b, and the headband 806 may be connected to the fixed strap 804 at ends 818a, 818b (defining pivots 822a, 822b). The display unit 802 may include a display configured to present an augmented reality visualization, a virtual reality visualization, or other suitable visualization to a user. The fixed strap 804 may include electronic components that may be configured to operate through the HMD 800 and provide a virtual or augmented reality experience to the user. These electronic components may include a projector, a waveguide, a speaker, a processor, or a memory component.

[0071] The fixing strap 804 may include proximal portions 805a, 805b attached to the display unit 802 via ends 816a, 816b, respectively, and respective distal portions 808a, 808b connecting the proximal portions 805a, 805b to each other. The distal portions 808a, 808b may overlap the proximal portions 805a, 805b, or the ends of the distal portions 808a, 808b and the proximal portions 805a, 805b may be attached to each other. The distal portions 808a, 808b may be connected to the proximal portions 805a, 805b at connection points 820a, 820b. The balancing devices 810a, 810b may be attached to the distal portions 808a, 808b. Fig. 8A and Figure 8B 805a, 805b, however, the balancing devices 810a, 810b may also be attached to the distal portions 808a, 808b at points overlapping the proximal portions 805a, 805b. The balancing devices 810a, 810b may include any of the aforementioned balancing devices, such as functional components (e.g., electronic components), non-functional components, etc. In some examples, the distal portions 808a, 808b may include weighted belt portions, cables, etc., and the additional balancing devices 810a, 810b may be omitted.

[0072] An adjustment mechanism 812 may be included in the distal portions 808a, 808b. The adjustment mechanism 812 may be configured to simultaneously adjust the tension of the strap 804 and the balance of the HMD 800. For example, Fig. 8AAn example is illustrated in which the adjustment mechanism 812 is used to loosen the fixing strap 804 (lengthen the distal portion 808a) so that the HMD 800 can be worn on a relatively large user's head 801a. For example, Figure 8B An example is illustrated in which the adjustment mechanism 812 is used to tighten the fixing strap 804 (shorten the distal portion 808b) so that the HMD 800 can be worn on a relatively small user's head 801b. The adjustment mechanism 812 may include an adjustment dial, a rack and pinion system, a gear drive system, etc., and may be automatically adjusted (via an electric actuator, etc.) or manually adjusted (via user manipulation, etc.).

[0073] By extending the distal portion 808a to Fig. 8A or shortening the distal portion 808b to Figure 8B In the configuration of the HMD 800, the adjustment mechanism 812 can be used to change the balance of the HMD 800. For example, when the distal portion 808a is elongated, the balance devices 810a, 810b can move forward relative to the user's head 801a. When the distal portion 808b is shortened, the balance devices 810a, 810b can move backward relative to the user's head 801b.

[0074] In some examples, the relative positions of the balancing devices 810a, 810b, the display unit 802, and the pivots 822a, 822b can remain fixed in a direction perpendicular to the longitudinal axis of the display unit 802, while the adjustment mechanism 812 is used to adjust the size of the fixing band 804 for different users' heads 801a, 801b. For example, when the distal portion 808a is elongated, the balancing devices 810a, 810b can move forward relative to the user's head 801a, but can remain in a fixed position relative to the display unit 802 in a direction perpendicular to the longitudinal axis of the display unit 802, so that the HMD 800 remains balanced. When the distal portion 808b is shortened, the balancing devices 810a, 810b can move backward relative to the user's head 801b, but can remain in a fixed position relative to the display unit 802 in a direction perpendicular to the longitudinal axis of the display unit 802, so that the HMD 800 remains balanced.

[0075] The balancing devices 810a, 810b can be positioned relative to the distal portions 800a, 800b, and the mass of the balancing devices 810a, 810b can be provided to balance the moment arm of the display unit 802 about the pivots 822a, 822b, even in the case of a user's head of varying size. Balancing the weight of the HMD 800 can move the weight of the HMD 800 (e.g., the display unit 802) away from the user's face, transfer the weight of the HMD 800 to the top of the user's head through the top strap 806, provide a lower perceived weight of the HMD 800, and improve the user's comfort when wearing the HMD 800.

[0076] Fig. 9 The HMD 900 includes a headband 906 extending in a direction perpendicular to the longitudinal axis of the display unit 902. The HMD 900 can be used with respect to Figures 1 to 3B The illustrated and discussed HMDs 100, 300a, 300b are the same or similar and include the same or similar components. For example, the HMD 900 may include a display unit 902 and a strap 904 extending from and connected to the display unit. A head strap 906 may extend from and connect to the display unit 902 and the strap 904. The strap 904 may be connected to the display unit 902 at ends 910a, 910b. The head strap 906 may be connected to the display unit 902 and the strap 904 at ends 912a, 912b, respectively. The display unit 902 may include a display configured to present an augmented reality visualization, a virtual reality visualization, or other suitable visualization to a user. The strap 904 may include electronic components that may be configured to operate through the HMD 900 and provide a virtual or augmented reality experience to the user. These electronic components may include a projector, a waveguide, a speaker, a processor, or a memory component.

[0077] The balancing device 908 may be connected to the top head strap 906. The balancing device 908 may be moved proximally or distally relative to the display unit 902 along the top head strap 906, or moved forward or backward relative to the user wearing the HMD 900, to balance the HMD 900. Moving the balancing device 908 proximally or distally relative to the display unit 902 respectively reduces or increases the force arm applied by the balancing device 908, which can be used to balance the weight of the HMD 900 between the display unit 902 and the balancing device 908.

[0078] In some examples, the balancing device 908 may be automatically moved by a motor or other electronic actuator controlled by the HMD 900. In some examples, the user's face may be scanned, the user's head size may be estimated, and the balancing device 908 may be automatically adjusted based on this facial scan and the estimated head size. In some examples, the balancing device 908 may be manually actuated or adjusted. For example, the user of the HMD 900 may directly manipulate the balancing device 908, or may manipulate a dial or other adjustment mechanism to adjust the position of the balancing device 908. In some examples, a top head strap 906 extending perpendicular to the longitudinal axis of the display unit 902 may be provided to allow the HMD 900 to be worn by a wide range of users, while HMDs with top head straps extending parallel to the longitudinal axis of the display unit cannot be used by these users. For example, users wearing headbands or the like may also comfortably wear the top head strap 906. Balancing the weight of the HMD 900 can move the weight of the HMD 900 (e.g., the display unit 902) away from the user's face, transfer the weight of the HMD 900 to the top of the user's head through the top strap 906, provide a lower perceived weight of the HMD 900, and improve the user's comfort when wearing the HMD 900.

[0079] Fig.10 The HMD 1000 is illustrated as including a headband 1006 extending in a direction parallel to the longitudinal axis of the display unit 1002 and a headband 1008 extending in a direction perpendicular to the longitudinal axis of the display unit 1002. The HMD 1000 may be used with respect to Figures 1 to 3B The illustrated and discussed HMDs 100, 300a, 300b are the same or similar and include the same or similar components. For example, the HMD 1000 may include a display unit 1002 and a strap 1004 extending from and connected to the display unit 1002. A top strap 1008 may extend from and connect to the top strap 1006 and the strap 1004. The strap 1004 may be connected to the display unit 1002 at ends 1012a, 1012b. The top strap 1006 may be connected to the strap 1004 at ends 1014a, 1014b (defining pivots 1018a, 1018b). The top strap 1008 may be connected to the top strap 1006 and the strap 1004 at ends 1016a, 1016b, respectively. The display unit 1002 may include a display configured to present an augmented reality visualization, a virtual reality visualization, or other suitable visualization to a user. The strap 1004 may include electronic components that may be configured to operate through the HMD 1000 and provide a virtual or augmented reality experience to the user. These electronic components may include a projector, a waveguide, a speaker, a processor, or a memory component.

[0080] The balancing device 1010 may be connected to the top strap 1008. The balancing device 1010 may be moved proximally or distally along the top strap 1008 relative to the display unit 1002, or moved forward or backward relative to the user wearing the HMD 1000, to balance the HMD 1000. Moving the balancing device 1010 proximally or distally relative to the display unit 1002 respectively reduces or increases the force arm applied by the balancing device 1010, which may be used to balance the weight of the HMD 1000 between the display unit 1002 and the balancing device 1010.

[0081] In some examples, the balancing device 1010 may be automatically moved by a motor or other electronic actuator controlled by the HMD 1000. In some examples, the user's face may be scanned, the user's head size may be estimated, and the balancing device 1010 may be automatically adjusted based on this facial scan and the estimated head size. In some examples, the balancing device 1010 may be manually actuated or adjusted. For example, a user of the HMD 1000 may directly manipulate the balancing device 1010, or may manipulate a dial or other adjustment mechanism to adjust the position of the balancing device 1010. Both the top strap 1006 and the top strap 1008 may be included to increase the stability of the HMD 1000. In addition, a single balancing device 1010 may be provided to change the balance of the HMD 1000, rather than using two balancing devices to balance each side of the HMD. Balancing the weight of the HMD 1000 can move the weight of the HMD 1000 (e.g., the display unit 1002) away from the user's face, transfer the weight of the HMD 1000 to the top of the user's head through the top strap 1006 and the top strap 1008, provide a lower perceived weight of the HMD 1000, and improve the user's comfort when wearing the HMD 1000.

[0082] To the extent applicable to the present technology, the collection and use of data obtained from various sources may be used to improve the delivery of inspirational content or any other content that may be of interest to the user. The present disclosure contemplates that in some instances, the collected data may include personal information data that uniquely identifies or can be used to contact or locate a specific person. Such personal information data may include demographic data, location-based data, phone numbers, email addresses, ID, home address, data or records related to the user's health or fitness level (e.g., vital sign measurements, medication information, exercise information), date of birth, or any other identifying or personal information.

[0083] The present disclosure recognizes that the use of such personal information data in the present technology can be used to benefit users. For example, the personal information data can be used to deliver targeted content that users are more interested in. Therefore, the use of such personal information data enables users to have planned control over the content delivered. In addition, the present disclosure also anticipates other uses of personal information data that benefit users. For example, health and fitness data can be used to provide insights into the user's overall health status, or can be used as positive feedback to individuals who use technology to pursue health goals.

[0084] The disclosure anticipates that entities responsible for the collection, analysis, disclosure, transmission, storage or other uses of such personal information data will comply with sound privacy policies and / or privacy practices. Specifically, such entities should implement and adhere to the use of privacy policies and privacy practices that are recognized as meeting or exceeding industry or government requirements for maintaining the privacy and security of personal information data. Such policies should be easy for users to access and should be updated as changes in the collection and / or use of data occur. Personal information from users should be collected for legal and reasonable entity purposes and should not be shared or sold outside these legal purposes. In addition, such collection / sharing should be carried out after receiving the user's informed consent. In addition, such entities should consider taking any necessary steps to protect and safeguard access to such personal information data, and ensure that other entities with access to personal information data comply with the privacy policies and procedures of other entities. In addition, such entities can subject themselves to third-party assessments to prove that they comply with widely accepted privacy policies and privacy practices. In addition, policies and practices should be adapted to specific types of personal information data collected and / or accessed, and to applicable laws and standards including considerations of special jurisdictions. For example, in the United States, the collection or acquisition of certain health data may be governed by federal and / or state laws, such as the Health Insurance Portability and Accountability Act (HIPAA); while health data in other countries may be subject to other regulations and policies and should be handled accordingly. Therefore, different privacy practices should be advocated for different types of personal data in each country.

[0085] Regardless of the foregoing, the present disclosure also contemplates implementation schemes in which users selectively block the use or access of personal information data. That is, the present disclosure contemplates that hardware elements and / or software elements may be provided to prevent or block access to such personal information data. For example, with respect to an advertising delivery service, the technology of the present invention may be configured to allow a user to choose to "opt in" or "opt out" at any time during or after registration for the service to participate in the collection of personal information data. In another example, a user may choose not to provide emotion-related data for a target content delivery service. In another example, a user may choose to limit the length of time that emotion-related data is retained, or to completely prohibit the development of basic emotional conditions. In addition to providing "opt-in" and "opt-out" options, the present disclosure also contemplates providing notifications related to access or use of personal information. For example, a user may be notified that the user's personal information data will be accessed when downloading an application, and then the user may be reminded again just before the personal information data is accessed by the application.

[0086] In addition, it is the intention of the present disclosure that personal information data should be managed and processed in a manner that minimizes the risk of unintentional or unauthorized access or use. Once the data is no longer needed, the risk can be minimized by limiting the collection of data and deleting the data. In addition, and when applicable, including in certain health-related applications, data de-identification can be used to protect the privacy of users. De-identification can be facilitated by removing specific identifiers (e.g., date of birth, etc.), controlling the amount or specificity of stored data (e.g., collecting location data at the city level rather than at the address level), controlling how the data is stored (e.g., aggregating data between users), and / or other methods when appropriate.

[0087] Thus, while the present disclosure broadly covers the use of personal information data to implement one or more of the various disclosed embodiments, the present disclosure also contemplates that various embodiments may also be implemented without requiring access to such personal information data. That is, various embodiments of the present technology will not fail to function properly due to the lack of all or a portion of such personal information data. For example, content may be selected and delivered to a user by inferring preferences based on non-personal information data or an absolute minimum amount of personal information, such as content requested by a device associated with the user, other non-personal information available to a content delivery service, or publicly available information.

[0088] For the purpose of illustration, the foregoing description uses specific nomenclature to provide a thorough understanding of the embodiments. However, it will be apparent to those skilled in the art that specific details are not required in order to practice the embodiments. Therefore, for the purpose of illustration and description, the foregoing description of the specific embodiments described herein is presented. They are not intended to be exhaustive or to limit the embodiments to the disclosed precise forms. It will be apparent to those of ordinary skill in the art that, in view of the above teachings, many modifications and variations are feasible.

Claims

1. A head-mounted electronic device, comprising: Display unit; a fixing strap connected to the display unit; a top head strap, the top head strap comprising a first end secured to the securing strap and a second end secured to the securing strap; and a balancing device connected to the fixing strap between the first end and the second end; The distance between the balancing device and the first end is adjustable.

2. The head-mounted electronic device according to claim 1, wherein: The balancing device is a first balancing device; and The head-mountable electronic device further includes a second balancing device connected to the fixing belt between the first balancing device and the second end.

3. The head-mounted electronic device according to claim 2, wherein: The distance is a first distance; and A second distance between the second balancing device and the second end is adjustable. 4 . The head-mounted electronic device according to claim 1 , wherein the balancing device comprises an electronic component of the head-mounted electronic device. 5 . The head-mountable electronic device according to claim 4 , wherein the electronic component comprises a battery electrically coupled to the display unit.

6. The head-mounted electronic device according to claim 1, wherein: The fixing belt comprises: A first portion including opposite ends coupled to the display unit; and a second portion overlapping the first portion between the first end and the second end, the second portion being adjustable relative to the first portion; and The balancing device is connected to one of the following: the first portion between the first end and the second end; or The second part.

7. The head-mounted electronic device according to claim 6, wherein: The length of the first portion is adjustable; and The length of the second portion is adjustable.

8. The head-mountable electronic device according to claim 1, wherein the balancing device is slidably connected to the fixing strap.

9. The head-mountable electronic device according to claim 8, further comprising a piston, wherein the balancing device is adjustably connected to the fixing belt via the piston.

10. A wearable electronic device comprising: Display unit; and A fixing component, the fixing component comprising: a first strap having a first end secured to the display unit and a second end secured to the display unit; a second strap connected to the first strap at a first pivot between the first end and the second end and at a second pivot between the first pivot and the second end; a first balancing device adjustably secured to the first strap between the first pivot and the second pivot; and A second counterbalancing device is adjustably secured to the first strap between the first pivot and the second pivot.

11. The wearable electronic device according to claim 10, wherein: The display unit includes a display screen; and The first balancing device includes a battery electrically coupled to the display screen.

12. The wearable electronic device according to claim 10, wherein: The wearable electronic device also includes an actuator; and The actuator is configured to adjust a first distance between the first balancing device and the first pivot and a second distance between the second balancing device and the second pivot.

13. The wearable electronic device of claim 12, further comprising a controller electrically coupled to the actuator and configured to cause the actuator to adjust the first distance and the second distance based on a change in the length of the first band.

14. The wearable electronic device according to claim 10, wherein the first balancing device and the second balancing device are manually adjustable.

15. A head-mounted display device, comprising: Display unit; Balancing device; a fixing belt extending between the display unit and the balancing device; and a top head strap coupled to the mounting strap to define a pivot axis between the display unit and the counterbalancing device; in: A first moment arm is defined between the pivot and the display unit; A second moment arm is defined between the pivot and the balancing device; and The second lever arm is adjustable.

16. The head-mountable display device according to claim 15, wherein: The balancing device is adjustably connected to the mounting strap; and The balancing device is adjustable to balance the first force arm and the second force arm.

17. The head-mountable display device according to claim 16, further comprising: an actuator mechanically coupled to the balancing device; and A controller is electrically coupled to the actuator and is configured to cause the actuator to adjust a position of the balancing device to balance the first moment arm and the second moment arm.

18. The head mountable display device of claim 17, wherein the adjustment of the position of the counterweight is based on a change in the length of the strap.

19. The head-mountable display device according to claim 15, further comprising an adjustment mechanism configured to adjust the length of the fixing strap.

20. The head-mountable display device of claim 19, wherein the second lever arm is adjustable independently of adjusting the length of the fixing strap.

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