Overstretch hinge for augmented reality glasses

Abstract

The invention relates to an over-stretch hinge for augmented reality glasses. Systems, methods, apparatus, and computer program products are provided for hinge modules for smart glasses systems and over-stretch hinge modules usable with one or more electronic components. In an example, an over-stretch hinge module may include: a hinge base; a paddle connected to the hinge base via a travel pin; and a preload spring that maintains a base position between the hinge base and the paddle, allowing the hinge base to move along a predetermined range relative to the paddle. Various examples may include a main pivot axis that defines movement of a frame arm attached to an eyeglass frame, and an outer pivot axis that defines an excessive extension of a pivot arm relative to the frame along an outer edge of the frame arm.

Description

Cross-references to related applications

[0001] This application claims priority to U.S. Patent Application No. 18 / 940,708, filed November 7, 2024, the entire contents of which are incorporated herein by reference. Technical Field

[0002] This application generally relates to hinges in augmented reality glasses configured to accommodate a variety of head shapes while ensuring that sensitive electronic components are not damaged. Background Technology

[0003] Smart devices are increasingly integrating with wearable technologies, such as glasses and other head-mounted devices. In various examples, smart devices may include cameras and display elements integrated into or within eyeglass frames. Smart devices can deliver content through visual means and provide unique usage characteristics and experiences, including but not limited to virtual reality (VR), augmented reality (AR), mixed reality (MR), or some combination and / or derivative thereof.

[0004] Compared to traditional eyeglasses, smart glasses face unique challenges due to the potential need to accommodate additional hardware and software components within a limited area (e.g., within a frame). Given the anatomical differences among users (e.g., different head sizes), smart glasses face additional user constraints and design considerations. For example, the frames of conventional eyewear devices may be more compliant and / or adjustable for different head widths because these frames do not require additional computing components and hardware. Smart glasses also typically have a larger cross-section to accommodate internal electronics and hardware, making the frame less flexible. Frame stretching and overstretching of smart glasses are further restricted because overstretching can be detrimental to the internal systems, interfering with alignment, connectivity, etc., and should generally be avoided in many cases.

[0005] Therefore, smart glasses may not be easily adjustable to different head widths because the internal mechanics may not tolerate deformation. Furthermore, the frames of smart glasses are typically injection-molded, unlike conventional glasses made of wire or acetate, which are more easily adjustable. This challenge can lead to user discomfort, such as headsqueeze. Image sharpness is also sensitive to frame deformation and bending, and other components, such as the projector, need to be isolated to prevent contact with various outer shells.

[0006] Therefore, it is necessary to address one or more of the challenges mentioned above. A brief summary of the solutions to these problems is described below. Summary of the Invention

[0007] To address the described challenges, this disclosure provides systems, methods, and apparatus for overextended hinges that can be used with various eyewear technologies. According to various examples, an overextended hinge module may include a hinge base, a paddle connected to the hinge base via a travel pin, and a preloaded spring that maintains a basic position between the hinge base and the paddle. In various examples, the paddle may include a cylindrical support surface to receive the travel pin, and the paddle may allow the hinge base to move relative to the paddle along a predetermined range. In other examples, the movement of the hinge base relative to the paddle along the predetermined range may require a force corresponding to the stiffness of the preloaded spring.

[0008] Depending on the specific details and examples, the predetermined range can be up to approximately ten degrees. The hinge base may also include a first pair of fittings securing the hinge base to the frame (hereinafter also referred to as an eyeglass frame) and a second pair of fittings securing the hinge base to the frame arm (hereinafter also referred to as a temple arm). Furthermore, the stiffness of the preloaded spring is between 29 N / mm and 37 N / mm.

[0009] Additional advantages will be set forth in part in the following description, or may be discovered by practice. These advantages will be realized and obtained by means of the elements and combinations particularly pointed out in the appended claims. It should be understood that the foregoing general description and the following detailed description are merely exemplary and explanatory, and not intended to limit the claimed invention.

[0010] The devices and / or systems described herein can be configured to include instructions that enable the execution of methods and operations associated with the presentation and / or interaction of extended-reality (XR) headsets. These methods and operations can be stored on a non-transitory computer-readable storage medium of the device or system. It should also be noted that the devices and systems described herein can be part of a larger overall system comprising multiple devices. A non-exhaustive list of electronic devices that may individually or in combination (e.g., systems) include instructions that enable the execution of methods and operations associated with the presentation and / or interaction of XR experiences, including extended-reality headsets (e.g., as two examples, mixed reality (MR) headsets or augmented reality (AR) glasses), wrist-worn devices, intermediate processing devices, textile-based smart clothing, and the like. For example, when describing an XR headset, it should be understood that the XR headset can communicate with one or more other devices (e.g., wrist-worn devices, servers, middleware devices), which together may include instructions for performing methods and operations associated with the presentation and / or interaction of the extended reality system (i.e., the XR headset will be part of a system that includes one or more additional devices). Various combinations with different related devices are conceivable, but are not listed for the sake of brevity.

[0011] The features and advantages described in the specification are not necessarily all-encompassing; in particular, certain additional features and advantages will be apparent to those skilled in the art from the accompanying drawings, specification, and claims. Furthermore, it should be noted that the language used in the specification has been chosen primarily for readability and instruction purposes.

[0012] Having outlined the examples above, a brief description of the accompanying figures will now be given. Attached Figure Description

[0013] To better understand the various embodiments described, reference should be made to the following detailed description in conjunction with the accompanying drawings, in which the same reference numerals refer to corresponding parts throughout the drawings.

[0014] Figure 1 The excessive stretch on the eyeglass module according to the various aspects discussed herein, and the relationship between the corresponding temple force and displacement, are shown.

[0015] Figure 2A Another example of a pivot axis corresponding to a hinge module is shown, according to the various aspects discussed herein.

[0016] Figure 2B The hinge module and attachment mechanism according to the various aspects discussed herein are shown.

[0017] Figure 3 The overstretched support surface is shown according to the various aspects discussed herein.

[0018] Figure 4 Pivoting implementation schemes based on the various aspects discussed herein are illustrated.

[0019] Figure 5 The hinge module actuation (nominal and overextended) is shown according to the various aspects discussed herein.

[0020] Figure 6 A hinged paddle is shown according to the various aspects discussed herein.

[0021] Figure 7 Approximate stiffness values ​​are shown based on the aspects discussed in this paper.

[0022] Figure 8 Two-dimensional overstretching is shown according to the aspects discussed in this paper.

[0023] Figure 9 The grounding paths for the hinge module and related components according to the various aspects discussed herein are shown.

[0024] Figure 10 Another overextended hinge according to some embodiments is shown, which can operate between a natural state (stationary state) and a deflected state (non-stationary state).

[0025] Figure 11A and Figure 11B A leaf spring (e.g., a flexure spring) is shown according to some embodiments for controlling the movement of an overextended hinge.

[0026] Figure 12 A method for assembling an overstretched hinge according to some embodiments is shown.

[0027] Figure 13A , Figure 13B , Figure 13C-1 and Figure 13C-2 Example MR and AR systems according to some embodiments are shown.

[0028] By convention, the features shown in the accompanying drawings may not be drawn to scale. Therefore, for clarity, the dimensions of various features may be arbitrarily enlarged or reduced. Furthermore, some drawings may not depict all parts of a given system, method, or apparatus. Finally, the same reference numerals may be used to denote the same features throughout the specification and drawings. Detailed Implementation

[0029] This document describes numerous details to provide a thorough understanding of the exemplary embodiments illustrated in the accompanying drawings. However, some embodiments may be practiced without many of these specific details, and the scope of the claims is limited only to those features and aspects specifically recited in the claims. Furthermore, well-known processes, components, and materials need not be described exhaustively to avoid obscuring relevant aspects of the embodiments described herein.

[0030] Overview Embodiments of this disclosure may include various types of extended reality (XR) systems (e.g., mixed reality (MR) systems and augmented reality (AR) systems) or combinations thereof. As described herein, MR and AR are any superimposed functionalities and / or sensorily detectable presentation methods provided by MR and AR systems within a user's physical environment. Such MR may include and / or represent virtual reality (VR), in which at least some aspects of the surrounding environment are reconstructed within a virtual environment (e.g., a virtual reconstruction of physical objects in the physical environment to avoid collisions between the user and physical objects in the surrounding physical environment). In the case of MR, the surrounding environment presented via a display is acquired via one or more sensors configured to acquire the surrounding environment (e.g., camera sensors, time-of-flight (ToF) sensors). While the wearer of an MR headset can see full details of the surrounding environment, what they see is a reconstruction of the environment reproduced using data from one or more sensors (i.e., the user does not directly see physical objects). MR headsets may also forgo displaying a reconstruction of objects in the physical environment, thereby providing the user with a fully VR experience. On the other hand, AR systems provide an experience in which information is provided, for example, by using waveguides, in combination with one or more transparent or semi-transparent waveguides and / or one or more lenses of AR glasses, to directly view at least some of the surrounding environment. Throughout this application, the term "extended reality (XR)" is used as a collective term encompassing both AR and MR. Furthermore, this application sometimes uses the term head-worn device or head-mounted device as a collective term encompassing XR head-mounted devices (e.g., AR glasses and MR head-mounted devices).

[0031] As described above, MR environments as presented herein can include, but are not limited to, non-immersive VR environments, semi-immersive VR environments, and fully immersive VR environments. Also as described above, AR environments can include marker-based AR environments, markerless AR environments, location-based AR environments, and projection-based AR environments. The above descriptions are not exhaustive and allow any other environment intentionally illuminated to the user to fall within the AR range, but do not allow any other environment intentionally illuminated to the user to fall within the MR range.

[0032] AR and MR content can include video, audio, haptic events, sensory events, or some combination thereof, any of which can be presented in a single channel or multiple channels (e.g., stereoscopic video that produces a three-dimensional effect for the viewer). Furthermore, AR and MR can be associated with applications, products, accessories, services, or some combination thereof, which are used, for example, to create content in an AR or MR environment and / or otherwise used in an AR or MR environment (e.g., to perform activities in an AR or MR environment).

[0033] Interactions with the AR and MR environments described in this paper can be performed using a variety of different modalities, and outputs can also be made across multiple modalities. In one example AR or MR system, a user can perform an air swipe gesture to skip a song via an application programming interface (API) provided for playback, such as at a home speaker.

[0034] Gestures as described herein can include air gestures, surface contact gestures, and / or other gestures that can be detected and determined based on single-hand movement (e.g., single-handed gestures performed by the user's hand, detected by one or more sensors of a wearable device (e.g., electromyography (EMG) and / or inertial measurement unit (IMU) of a wrist wearable device and / or one or more sensors included in a smart textile wearable device), and / or detected by image data acquired by imaging devices of the wearable device (e.g., a camera of a head wearable device, an external tracking camera positioned in the surrounding environment). "Air" generally includes portions of the user's hand that do not contact a surface, object, or electronic device (e.g., a head wearable device, or other communication-coupled devices such as a wrist wearable device); in other words, the gesture is performed in an open space in 3D space without contact with a surface, object, or electronic device. More generally, surface contact gestures (contacts on surfaces, objects, user body parts, or electronic devices) are also envisioned, where the contact (or intention to contact) is detected on a surface (e.g., on a table, on a user's hand or another finger, on a user's leg, on a sofa, or on a steering wheel with a single or two-finger tap). The various gestures disclosed herein can be detected using image data and / or sensor data (e.g., neuromuscular signals sensed by one or more biopotential sensors (e.g., EMG sensors) or other types of data from other sensors, such as proximity sensors, ToF sensors, IMU sensors, capacitive sensors, strain sensors), detected by wearable devices worn by the user and / or other electronic devices owned by the user (e.g., smartphones, laptops, imaging devices, intermediate devices, and / or other devices described herein).

[0035] The input modalities mentioned above can vary and depend on the user's experience. For example, in interactions using wrist-worn wearables, users can provide input using air gestures or surface contact gestures, detected by the neuromuscular signal sensors of the wrist-worn wearable. In the absence of a wrist-worn wearable, alternative, fully interchangeable input modalities can be used, such as one or more cameras located on a head-mounted device / glasses or elsewhere, to detect air gestures or surface contact gestures or inputs at an intermediate processing device (e.g., via physical input components such as buttons and touchpads). These different input modalities can be interchanged based on the desired user experience, portability, and / or product feature set (e.g., low-cost products may not include hand-tracking cameras).

[0036] When the input changes, the resulting output also changes. For example, an air gesture input detected by a camera on a head-mounted wearable device can cause an output at the head-mounted wearable device or control another electronic device different from the head-mounted wearable device. In another example, an input detected using data from a neuromuscular signal sensor can also cause an output at the head-mounted wearable device or control another electronic device different from the head-mounted wearable device. Although only a few examples have been described above, those skilled in the art will understand that different input modalities and different output modalities are interchangeable in response to input.

[0037] The specific operations described above can occur due to specific hardware. The devices described are not limiting, and features on these devices can be removed or additional features can be added. Different devices may include one or more similar hardware components. For the sake of brevity, similar devices and components are described herein. Any differences between devices and components will be described below in the appropriate sections.

[0038] As described herein, a processor (e.g., a central processing unit (CPU), microcontroller unit (MCU), etc.) is an electronic component responsible for executing instructions and controlling the operation of electronic devices (e.g., wrist-worn devices, head-worn devices, handheld intermediary processing devices (HIPDs), textile-based smart clothing, or other computer systems). Various types of processors exist that can be used interchangeably or as specifically required by the embodiments described herein. For example, the processor can be: (i) a general-purpose processor designed to perform a variety of tasks, such as running software applications, managing operating systems, and performing arithmetic and logical operations; (ii) a microcontroller designed for specific tasks, such as controlling electronic devices, sensors, and motors; (iii) a graphics processing unit (GPU) designed to accelerate the creation and rendering of images, videos, and animations, such as virtual reality animations like 3D modeling; (iv) a field-programmable gate array (FPGA) that can be programmed and reconfigured after manufacturing and / or can be customized to perform specific tasks, such as signal processing, cryptography, and machine learning; or (v) a digital signal processor (DSP) designed to perform mathematical operations on signals such as audio, video, and radio waves. Those skilled in the art will understand that one or more processors of one or more electronic devices can be used in the various embodiments described herein.

[0039] As described herein, a controller is an electronic component that manages and coordinates the operation of other components within an electronic device (e.g., controlling inputs, processing data, and / or generating outputs). Examples of controllers include: (i) microcontrollers, which are small, low-power controllers typically used in embedded systems and Internet of Things (IoT) devices; (ii) programmable logic controllers (PLCs), which can be configured for use in industrial automation systems to control and monitor manufacturing processes; (iii) system-on-a-chip (SoC) controllers, which integrate multiple components such as processors, memory, I / O interfaces, and other peripherals onto a single chip; and / or (iv) digital signal processors (DSPs). As described herein, a graphics module is a component or software module designed to handle graphics operations and / or processes, and may include hardware and / or software modules.

[0040] As described herein, memory refers to electronic components in a computer or electronic device that store data and instructions for access and operation by a processor. Devices described herein may include volatile and non-volatile memory. Examples of memory include: (i) random access memory (RAM) (e.g., dynamic random access memory (DRAM), static random access memory (SRAM), double-rate RAM (DDR RAM), or other random access solid-state memory devices) configured to temporarily store data and instructions; (ii) read-only memory (ROM) configured to permanently store data and instructions (e.g., one or more portions of system firmware, and / or a bootloader); (iii) flash memory, disk storage devices, optical disk storage devices, and other non-volatile solid-state storage devices that may be configured to store data in electronic devices (e.g., universal serial bus (USB) drives, memory cards, and / or solid-state drives (SSDs)); and (iv) cache memory configured to temporarily store frequently accessed data and instructions. As described herein, storage may include structured data (e.g., Structured Query Language (SQL) databases, MongoDB databases, GraphQL data, or JSON data). Other examples of storage may include: (i) data data, including user account data, user settings, and / or other user data stored by the user; (ii) sensor data detected by one or more sensors and / or otherwise acquired; (iii) media content data, including stored image data, audio data, documents, etc.; (iv) application data, which may include data collected and / or otherwise acquired and stored during use of the application; and / or (v) any other types of data described herein.

[0041] As described herein, the power system of an electronic device is configured to convert input power into a form usable for operating the device. The power system may include various components, including: (i) a power source, which may be an alternating current (AC) adapter power source or a direct current (DC) adapter power source; (ii) a charger input, which may be configured to use wired and / or wireless connections (which may be part of a peripheral interface, such as USB, micro-USB, near-field magnetic coupling, magnetic induction and magnetic resonance charging, and / or radio frequency (RF) charging); (iii) a power management integrated circuit configured to distribute power to various components of the device and ensure that the device operates within safety limits (e.g., regulating voltage, controlling current, and / or managing heat dissipation); and / or (iv) a battery configured to store power to provide usable power to components of one or more electronic devices.

[0042] As described herein, a peripheral interface is an electronic component (e.g., an electronic component of an electronic device) that allows the electronic device to communicate with other devices or peripheral devices and can provide means for inputting and outputting data and signals. Examples of peripheral interfaces include: (i) a USB interface and / or a micro USB interface configured to connect a device to an electronic device; (ii) a Bluetooth interface configured to allow devices to communicate with each other, including Bluetooth Low Energy (BLE); (iii) a near field communication (NFC) interface configured as a short-range wireless interface for operations such as access control; (iv) a POGO pin, which may be a small spring-loaded pin configured to provide a charging interface; (v) a wireless charging interface; (vi) a global positioning system (GPS) interface; (vii) a Wi-Fi interface used to provide connectivity between a device and a wireless network; and (viii) a sensor interface.

[0043] As described herein, a sensor is an electronic component (e.g., in an electronic device such as a wearable device and / or otherwise in electronic communication with an electronic device such as a wearable device) that is configured to detect physical and environmental changes and generate electrical signals. Examples of sensors may include: (i) imaging sensors (e.g., including one or more cameras mounted on a corresponding electronic device, such as a simultaneous localization and mapping (SLAM) camera) for collecting imaging data; (ii) biopotential signal sensors; (iii) IMUs for detecting changes in, for example, angular velocity, force, magnetic field, and / or acceleration; (iv) heart rate sensors for measuring a user's heart rate; (v) peripheral oxygen saturation (SpO2) sensors for measuring a user's blood oxygen saturation and / or other biometric data; (vi) capacitive sensors for detecting potential changes near a part of the user's body (e.g., a sensor-skin interface) and / or other devices or objects; (vii) sensors for detecting certain inputs (capacitive sensors and force sensors); and (viii) light sensors (e.g., ToF sensors, infrared sensors, or visible light sensors); and / or sensors for sensing data from the user or the user's environment. As described herein, biopotential signal sensing components are devices used to measure electrical activity within the body (e.g., biopotential signal sensors). Some types of biopotential signal sensors include: (i) electroencephalography (EEG) sensors configured to measure electrical activity in the brain to diagnose neurological diseases; (ii) electrocardiography (ECG or EKG) sensors configured to measure electrical activity in the heart to diagnose heart problems; (iii) electromyography (EMG) sensors configured to measure electrical activity in muscles and diagnose neuromuscular diseases; and (iv) electrooculography (EOG) sensors configured to measure electrical activity in the eye muscles to detect eye movements and diagnose eye diseases.

[0044] As described herein, applications (e.g., software) stored in the memory of an electronic device include instructions stored in the memory. Examples of such applications include: (i) games; (ii) word processors; (iii) messaging applications; (iv) media streaming applications; (v) financial applications; (vi) calendars; (vii) clocks; (viii) web browsers; (ix) social media applications; (x) camera applications; (xi) web-based applications; (xii) health applications; (xiii) AR and MR applications; and / or (xiii) any other applications that may be stored in memory. Applications may operate in conjunction with one or more components of a data and / or device or communication-coupled device to perform one or more operations and / or functions.

[0045] As described herein, a communication interface module may include hardware and / or software capable of data communication using any of the following: various custom or standard wireless protocols (e.g., IEEE 802.15.4, Wi-Fi, ZigBee, 6LoWPAN, Thread, Z-Wave, Bluetooth Smart, ISA100.11a, WirelessHART, or MiWi), custom or standard wired protocols (e.g., Ethernet or HomePlug), and / or any other suitable communication protocol, including those not yet developed as of the date of filing of this application. A communication interface is a mechanism that enables different systems or devices to exchange information and data with each other, including hardware, software, or a combination of hardware and software. For example, a communication interface may refer to a physical connector and / or port on a device that enables communication with other devices (e.g., USB, Ethernet, HDMI, or Bluetooth). A communication interface may refer to a software layer (e.g., APIs and protocols such as HTTP and TCP / IP) that enables different software programs to communicate with each other.

[0046] As described herein, a graphics module is a component or software module designed to handle graphics operations and / or processes, and may include hardware modules and / or software modules.

[0047] As described herein, a nontransitory computer-readable storage medium is a physical device or storage medium that can be used to store electronic data in a nontransitory form (e.g., such that data is permanently stored until it is intentionally deleted or modified).

[0048] Smart glasses overstretch mechanism In various aspects, systems, methods, and devices provide overstretching mechanisms suitable for wearable technologies such as eyeglasses and other head-mounted devices. The techniques and aspects discussed herein differentiate and improve upon conventional systems by providing at least one mechanism to resist deflection and protect internal electrical, optical, and mechanical systems. In various embodiments (e.g., smart glasses and head-mounted systems), the frame may include a front frame and temple arm housings to resist overstretching.

[0049] The system, method, and apparatus are also capable of integrating rigid components while still compliantly adapting to different head widths by at least incorporating an overstretch hinge. This hinge provides a torsionally resilient pivot axis between the frame and temple, which, through a universal design, allows for a range of temple width positions to accommodate different head widths.

[0050] Figure 1 A top view of the eyeglasses system 100 and a graph 130 showing the relationship between stress and displacement corresponding to “head compression” are shown. For example, the frame arms 102A and 102B of the eyeglasses system 100 can extend a distance d 120 to accommodate different head sizes and widths. The stress F 110 corresponds to the inward force that the frame arms may exert on the wearer's head. Graph 130 shows how the force varies with displacement (distance d 120) for a given stiffness (e.g., 1.5 g / mm, 3.0 g / mm, or 8.0 g / mm). Forces greater than about 1 Newton may be perceived as uncomfortable by the user, thus requiring adaptation to different head sizes and widths while reducing the amount of pressure (e.g., “head compression” on the user's temples). The eyewear system may include two hinges: a primary hinge (i.e., 104A and 104B) and a secondary hinge (e.g., 106A and 106B). The primary hinge mainly controls movement between the folded state (e.g., stored state) and the extended state (e.g., wearable state) of the frame arms. As described herein, the secondary hinges (e.g., 106A and 106B) can extend beyond the range of movement of the primary hinge and allow for a wider range of head sizes. Furthermore, the secondary hinges may be spring-loaded, which ensures that the eyewear system always fits snugly against the user's face, regardless of head size.

[0051] Furthermore, image sharpness on smart glasses can be highly sensitive to waveguide bending, and any projector may need to be isolated from various components (e.g., frames and other housings) to prevent contact. Based on the various examples discussed herein, projectors for smart glasses can be placed within or substantially close to the frame connector. Due to the need for clearance around the projector, the clearance pitch can be as high as approximately 1 mm.

[0052] Figure 2A and Figure 2BAn example hinge mechanism including a “sliding design” is shown, which has an overextended pivot along the outer axis of the frame. Figure 2A A main pivot axis 220 corresponding to a mechanical pivot joint that allows the frame arm to close and extend is shown. Aspects of this disclosure provide an external pivot axis 210 for overextension. In other words, when the frame arm is overextensioned, the frame arm pivots about the external pivot axis 210, and the external pivot axis prevents gaps between the frame and the arm, as well as friction / contact between the components.

[0053] Figure 2B Additional views and details regarding the hinge module and its operation are provided. Frame 230 may include attachment mechanism 235, for example, connected to hinge module 240 via one or more screws and / or interlocking devices. The screws may be vertically positioned, for example, along the main pivot axis 220. The main pivot axis 220 allows the arm to close relative to the frame, for example, when storing eyeglasses or when not in use. Hinge module 240 may be further connected to frame arm. In some examples, one or more screws may be attached to frame arm and may be attached horizontally to frame arm 250. In some examples, the first set of fittings (i.e., attachment mechanism 235) connecting frame 230 and hinge module 240 may be orthogonal to the set of fittings 245 connecting hinge module and frame arm 250.

[0054] As will be discussed further, attachment mechanism 235 can also be defined as the primary hinge, which has a greater range of motion than the secondary hinge. In this example, the secondary hinge can also be referred to as hinge module 240.

[0055] The hinge module 240 can be located entirely within the frame arm. During the closure of the frame arm (where frame arm 250 is close to frame 230), or during the extension of the frame arm (where frame arm 250 is away from frame 230 but not overextended), frame arm 250 can rotate about the main pivot axis. During overextension (where frame arm 250 extends beyond its natural open position), hinge module 240 is capable of pivoting along the external pivot axis 210.

[0056] In various embodiments, the bistable lock can be implemented such that when the frame arms reach a specific “closed” or “open” position, they remain stable in the appropriate position until a force sufficient to overcome the stable position allows pivoting along the main pivot axis 220 or the external pivot axis 210.

[0057] Figure 3 It shows Figure 2A and Figure 2B The top view of the "sliding design" and overstretch mechanism discussed in the text. The overstretch axis 310 corresponds to... Figure 2AThe external pivot axis 210 is shown. The pivot axis may be defined by a cylindrical support surface including a fitting 320 that connects the frame to the arm. The fitting 320 may include a spatial region allowing pivoting within a range (e.g., 5 degrees, 10 degrees, 15 degrees, 20 degrees, or greater). It should be understood that, by way of example, Figure 3 Only one method for attaching the frame and arm to define the overextended external pivot axis 210 is shown, and any of a variety of attachment locations, attachment points, and attachment arrangements can be implemented depending on design considerations, hardware / software considerations, internal components, etc.

[0058] Figure 4 A pivoting implementation according to the various aspects discussed herein is illustrated. As described herein, a hinge base 420 is attached to a paddle 400 to form the basis of an overstretch sliding design. The paddle 400 includes a cylindrical support surface 410, which provides the range of overstretch and defines the external pivot axis.

[0059] Figure 5 The nominal position 510 and overextended position 520 are shown, resulting from the connection between the hinge base 420, the paddle, and the spring mechanism. The paddle 400 can be held in its basic position 515 by a preload spring 530. The preload spring 530 can also be held in place by a spring screw 560. A travel pin 540 provides additional attachment security between the hinge base 420 and the paddle 400.

[0060] In the nominal position 510 (where the frame arm is in its natural extended position), the preload spring 530 secures the position of the hinge base 420 relative to the paddle 400. The preload spring 530 helps to provide a stable position for the bistable lock discussed herein.

[0061] When the frame arm is in the overextended position 520, one or more travel pins 540 travel along the surface defined by the cylindrical support surface 410 to allow overextending along the external pivot axis within an overextended angle range 550. In some examples, one or more travel pins 540 may provide travel stops to limit overextending via the cylindrical support surface within a desired range. Depending on various examples, the overextending may be within a range of 5 degrees, 10 degrees, 15 degrees, or 20 degrees beyond the nominal position 510. Furthermore, in the overextended position 520, the arm of the preload spring 530 may provide a force, depending on the spring stiffness, to return the hinge base 420 and the paddle 400 to the nominal position 510. This force may be provided by a spring arm extending from the preload spring 530.

[0062] Depending on the specifics, any of a variety of materials can be used for the various components of the hinge system discussed herein. For example, hinge base 420 (see, for example, see...) Figure 4The hinge base can be made of stainless steel, such as 316 grade stainless steel. The hinge base can be formed using metal injection molding (MIM) and / or computer numerical control (CNC).

[0063] The guide pin 540 may also be made of stainless steel, and depending on certain aspects, may be formed using a screw machine. The bearing 410 may be made of nylon, and the manufacturing process may utilize injection molding. The paddle 400 may be made of stainless steel and / or nylon. (See, for example, the paddle...) Figure 6 The preloaded spring 530 can be formed using MIM, overmolding, and / or CNC machining. The spring post to which the preloaded spring 530 is attached can be made of stainless steel, such as 316 grade stainless steel, and can be formed using CNC machining. Depending on the aspects discussed herein, the preloaded spring 530 can comprise spring steel, spring form, and / or any of a variety of materials and manufacturing methods. The spring screw 560 can also comprise stainless steel, such as 316 grade stainless steel, and can be formed using a screw machine.

[0064] According to some aspects, such as Figure 6 As shown, the paddle-shaped object may contain metal for added strength and grounding. Figure 6 A top perspective view 610, a top perspective transparent view 620, and a bottom perspective view 630 of the paddle-shaped object are shown. Depending on the aspects, the paddle-shaped base 615 can be formed using metal injection molding. Overmolding 625 can form the remaining contour of the paddle-shaped object. Auxiliary machining equipment can add any additional features, contours, and supports as needed to form the paddle-shaped object.

[0065] In a similar manner, the hinge base 420 can be formed using metal injection molding. Tapping can be applied to form necessary openings, such as for the travel pin 540, and for the receiving portion of the spring post.

[0066] Depending on the aspects, the assembly sequence may include placing the bearing on the base, placing the paddle on the bearing, installing the travel pin, installing the spring post, installing the spring, and installing the spring screw. In other examples, one or more parts may be formed using 3D printing methods.

[0067] Finite element analysis (FEA) is applied to analyze spring performance in various testing scenarios. This is based on various aspects, such as... Figure 7 As shown, the hinge system discussed in this paper can be analyzed as a series of springs, where the frame stiffness (k) f ) and hinge stiffness (k h This can form the system stiffness (k) s ). Can be used Figure 7 The equations provided are used to calculate the equivalent spring constant of the system.

[0068] Approximating the spring as a cantilever beam and combining the cantilever beam with the moment of inertia in calculations can be used to determine the various wire diameters available in the examples discussed in this paper.

[0069] Table 1 provides a comparison of spring performance based on various spring diameters, predicted forces, stiffness, von Mises (VM) stress, yield stress, and VM / yield stress. The FEA predicts a spring wire diameter of approximately 0.88 mm, with various prototype sample wire specifications including 0.0907 mm, 0.0808 mm, 0.072 mm, and 0.0641 mm. According to Table 1, a spring diameter of 0.88 mm is found to be ideal for a target stiffness of 31.4 N / mm. Based on various examples, the stiffness of preloaded springs can range from 29 N / mm to 37 N / mm.

[0070]

[0071] Figure 8 Another embodiment capable of overstretching in two dimensions is shown. In various examples, the bearings can be spherical bearings, thus allowing for additional temple deflection. The frame can stretch vertically, for example, about a horizontal axis, or laterally, for example, about a vertical axis. Figure 8 Side view 800 shows that the temple arm 802 can move relative to the lens retaining frame portion 804 along a first axis. Top view 806 shows that the temple arm 802 can also move relative to the lens retaining frame portion 804 along a second axis (different from the first axis). Perspective view 808 shows that the temple arm can move simultaneously along both the first and second axes, thereby allowing a wider range of adjustment. In some embodiments, the force required to cause movement along the first or second axis may be different (e.g., movement along the first axis requires a greater force than movement along the second axis). In some embodiments, a user-selectable locking device may be present to restrict movement to only one of the first or second axes. In some embodiments, the user can lock the overextension hinge to a position that keeps the adjustment between different periods of use.

[0072] According to another embodiment, such as Figure 9As shown, a grounding path can be established, for example, to ground a circuit board adjacent to or near the hinge system. According to some examples, circuit board 900 may contact one or more components of the hinge system. In some embodiments, screws 902A and 902B may contact exposed copper on the circuit board as a grounding path. In some embodiments, a hinge paddle 904, which may be a steel paddle, may be threaded onto the circuit board and other components. In some embodiments, a spring 906 contacts the paddle, and the spring contacts a spring screw. In some embodiments, the rear base of the hinge may receive the spring screw. In some embodiments, a hinge screw may be screwed into the rear base of the hinge, and the front of the hinge base may contact the hinge screw.

[0073] In some embodiments, the circuit board 900 housed within the temple arm may include one or more components for providing a user with an extended reality experience (e.g., an augmented reality viewing experience). In some embodiments, the temple arm includes one or more batteries for powering the circuit board and other electronic components of the glasses.

[0074] According to various examples of this disclosure, grounding can occur primarily through a spring. A minimum contact force may be required, such as 15 N. The sliding contact at the end of the spring can be less than 0.3 mm.

[0075] Figure 10 Another overextended hinge 1000 according to some embodiments is shown, which can operate between a natural state (stationary state) and a deflected state (non-stationary state). Figure 10 Another overextended hinge 1000 is shown in its natural state 1002, wherein the overextended hinge is not in its extended state. The overextended hinge 1000 also shows that the overextended hinge also houses a flexible circuit 1004 that transmits power and / or data between the temple and the lens frame.

[0076] Figure 10 An overextended hinge 1000 operating in deflection state 1006 is also shown, wherein the amount of deflection is at least partially determined by the maximum deflection of the flexible circuit 1004. For example, compared to a head-worn device without an overextended hinge, the flexible circuit is designed to have sufficient clearance / length to accommodate the full movement of the overextended hinge without suffering any performance degradation. In some embodiments, the flexible circuit may extend beyond the limits of the overextended hinge 1000, for example, up to 5%, to increase the lifespan of the flexible circuit and address the problem of device stiffness decreasing over time.

[0077] Figure 11A and Figure 11BA leaf spring (e.g., a flexural spring) is shown according to some embodiments for controlling the movement of an overextended hinge. The size and shape of the leaf spring 1100 within the overextended hinge 1102 control the movement of the overextended hinge. Figure 11A Perspective view 1101A shows the leaf spring 1100, as shown, having a portion coupled to an overextended hinge base 1104. The hinge base 1104 includes a region 1109 (i.e., a portion configured to hold the lenses and / or waveguides of the augmented reality glasses) that remains fixed relative to the frame portion 1106 when the main hinge is in its extended state. The leaf spring is attached to region 1109, and the leaf spring 1100 is also attached to the temple arm portion 1108 at locations 1110A and 1110B, which remain fixed relative to the temple arm. The leaf spring 1100 includes another region 1111, which is configured to flex and allow movement between the frame portion 1106 and the temple arm portion 1108. Figure 11A The diagram shows the overextended hinge 1102 in a stationary state, for example, the position of the overextended hinge remains unchanged when no external force is introduced. In some embodiments, the leaf spring includes a preload to control the magnitude of the force that causes the leaf spring 1100 to deflect. Figure 11A Also shown is a top view 1112A (e.g., a sectional view) illustrating the position of the leaf spring 1100 within the overextended hinge 1102. As shown in top view 1112A, the leaf spring 1100 has an adaptive flexible circuit 1114 (e.g., Figure 10 The flexible circuit 1004 in the middle passes through the shape of the overstretched hinge 1102. Additionally, Figure 11A and Figure 11B The flexible circuit 1114 is shown to have loops 1113A and 1113B, which control the entry of moisture into the temple and frame portions of the augmented reality glasses.

[0078] Figure 11B The leaf spring 1100 is shown, controlling the movement of the overextended hinge when it is in an overextended state. (Comparison) Figure 11A 3D diagram 1101A and Figure 11B 3D diagram 1101B, Figure 11B The perspective view 1101B shows the deflection of the middle portion 1116 of the leaf spring 1100 when the overextended hinge is in an overextended state.

[0079] The shape of the overextended hinge and / or the shape and thickness of the leaf spring 1100 can control the maximum deflection of the overextended hinge, and the maximum deflection can reach ten degrees. For example, a bearing 1118 is also shown in the top view 1112B (e.g., a sectional view), which can control the movement of the overextended hinge, for example, such that the hinge can only deflect on one or more predefined axes.

[0080] Because of its overextended hinge, the augmented reality glasses can accommodate a wider range of head sizes. The leaf springs also help secure the temple arms to the user, as the overextended hinge applies a fixing force to the user's head when the leaf springs 1100 attempt to return to their undeflected state.

[0081] Figure 12 A method 1200 for assembling an overstretched hinge 1201 according to some embodiments is shown.

[0082] Figure 12 It is shown that in the first step 1202, an overextension hinge base 1204 and a leaf spring 1206 (e.g., a flexure spring) are provided. The overextension hinge base is configured to be coupled to a main hinge, which is coupled to the lens frame of the augmented reality glasses.

[0083] Step 1208 illustrates coupling the leaf spring 1206 (e.g., via welding (e.g., laser welding) at one or more contact points 1207) to the overextended hinge base 1204. In some embodiments, other accessories such as adhesives, threaded fasteners, and / or clips may be used.

[0084] Step 1210 illustrates the provision of bearing 1212. In some embodiments, bearing 1212 is not permanently attached when the overextension hinge is fully assembled, but is held in place. In some embodiments, bearing 1212 is coupled to the surface of overextension hinge base 1204. The bearing is configured to seal the gaps created by movement of the overextension hinge, and in some embodiments, bearing 1212 is also configured to act as a stop for limiting the deflection of leaf spring 1206. For example, under a certain amount of deflection, the leaf spring will contact bearing 1212, thereby limiting further deflection of the leaf spring.

[0085] Step 1214 shows the bearing 1212 positioned relative to the overextension hinge base 1204. Step 1216 shows the provision of a moving half 1218 configured to be mounted to the temple arm and movable relative to the overextension hinge base 1204. Step 1220 shows the moving half 1218 hingedly coupled to the overextension hinge base 1204.

[0086] Step 1222 illustrates placing the flexible circuit 1224 within the partially completed overstretch hinge. The flexible circuit 1224 includes frame-side cable loops 1226 that isolate electronic components located within the frame from moisture and debris to prevent their ingress. The flexible circuit 1224 also includes temple-side cable loops 1228 that isolate electronic components located within the temple arms from moisture and debris to prevent their ingress.

[0087] Step 1230 shows providing a cylindrical cover 1232 covering a portion of the flexible circuit 1224, ensuring that the flexible circuit is not damaged during use. Step 1233 shows placing the cylindrical cover 1232 in place so that it can be coupled to the appropriate location in subsequent steps.

[0088] Step 1234 illustrates a hinge provided to the front frame bracket 1236, which engages with the cylindrical cover 1232 and the overextended hinge base 1204. Step 1238 illustrates countersunk fasteners 1240A and 1240B (e.g., kingpin screws with supporting surfaces) connecting the hinge to the front frame bracket 1236, the cylindrical cover 1232, and the hinge base 1204. In some embodiments, once the countersunk fasteners 1240A and 1240B are secured, the overextended hinge 1201 also secures other components (e.g., bearing 1212) in place.

[0089] Step 1242 illustrates providing a temple arm 1244 to be secured to the assembled overextension hinge 1201. Although not shown, the other side 1246 of the overextension hinge 1201 is configured to couple to the frame of the augmented reality glasses. Step 1248 illustrates attaching the temple arm 1244 to the overextension hinge 1201 to control the movement of the temple arm 1244 relative to the frame, such as movement beyond the operating angle of a conventional hinge.

[0090] (A1) According to some embodiments, augmented reality (AR) glasses include a main hinge that includes a main pivot axis defining movement of a temple arm attached to a glasses frame. The main pivot axis provides a rotational axis during closure and extension of the temple arm relative to the glasses frame between a first position and a second position. The AR glasses also include a secondary hinge that includes a secondary pivot axis along the outer edge of the temple arm, wherein the secondary pivot axis is parallel to the main pivot axis, and wherein the secondary pivot axis provides a rotational axis during overextension of the temple arm relative to the glasses frame. In some embodiments, an AR projection system is coupled to the glasses frame, and a battery located in the temple arm is configured to power the AR projection system coupled to the glasses frame. Figures 1 to 12 Augmented reality glasses are shown below: The augmented reality glasses include temple arms attached to an eyeglass frame, wherein the temple arms move about the eyeglass frame via a main hinge and a secondary hinge. In some embodiments, the main hinge moves from a closed position to an open position, wherein (i) the open position is when the temple arms are perpendicular to the eyeglass frame (e.g., substantially perpendicular to + / - 5 degrees), and (ii) the closed position is when the temple arms are parallel to the eyeglass frame (e.g., substantially parallel to + / - 5 degrees to 15 degrees).

[0091] (A2) In some embodiments of A1, overstretching occurs when the angle between the frame arm and the eyeglass frame exceeds 90 degrees. For example, Figure 1 , Figure 2A , Figure 2B , Figure 7 , Figure 8 and Figures 10 to 11B It shows an overstretch of more than approximately 90 degrees.

[0092] (A3) In some embodiments of any of A1 to A2, the hinge module is capable of overextension up to ten degrees. In some embodiments, the extension can be up to 15 degrees, depending on the magnitude of the force applied to the overextension hinge. For example, Figure 8 The range of motion of the overextended hinge is shown.

[0093] (A4) In some embodiments of any of A1 to A3, after maximum rotation is achieved on the primary pivot axis, rotation occurs on the secondary pivot axis. For example, Figure 1 , Figure 2A , Figure 2B , Figure 7 , Figure 8 and Figures 10 to 11B It shows an overstretch of more than approximately 90 degrees.

[0094] (A5) In some embodiments of any of A1 to A4, the secondary hinge includes a spring that biases the temple arm to a second position during overextension. For example, Figure 2B , Figure 5 , Figure 8 , Figure 9 and Figures 11A to 12 Both show springs used to control the movement of overextended hinges.

[0095] (A6) In some embodiments of A5, the spring is one of a leaf spring, a coil spring, or a torsion spring. For example, Figure 2B , Figure 5 , Figure 8 , Figure 9 and Figures 11A to 12 Both show springs used to control the movement of overextended hinges.

[0096] (A7) In some embodiments of any of A1 to A6, the main hinge and the secondary hinge are configured to allow the passage of a flexible circuit that electrically couples at least the AR projection system to the battery. Figure 11A and Figure 11B The path of the flexible circuit 1114 through the overstretched hinge is shown.

[0097] (A8) In some embodiments of any of A1 to A7, the secondary hinge includes a stop that limits overextension of the temple arm by more than ten degrees. For example, Figure 5A travel pin 540 is shown, which can provide additional attachment security and limit movement between the hinge base 420 and the paddle 400.

[0098] (A9) In some embodiments of any of A1 to A8, the secondary hinge may be overextended along the additional axis of rotation, and the AR glasses include a spring that controls movement along both the secondary pivot axis and the additional axis of rotation. For example, Figure 8 It is shown that the movement of the temple arm 802 can occur along a first axis and a second axis, wherein the first axis is different from the second axis.

[0099] (A10) In some embodiments of any of A1 to A9, a portion of the secondary hinge is coupled to the temple arm by one or more of welding, fasteners, and adhesives. For example, step 1208.

[0100] (A11) In some embodiments of any of A1 to A10, the secondary hinge includes a hinge base and a paddle connected to the hinge base via a travel pin. In some embodiments, the paddle includes a cylindrical support surface to receive the travel pin and allows the hinge base to move relative to the paddle along a predetermined range. In some embodiments, the secondary hinge includes a preload spring that maintains a basic position between the hinge base and the paddle. In some embodiments, the movement of the hinge base relative to the paddle along the predetermined range requires a force corresponding to the stiffness of the preload spring.

[0101] (A12) In some embodiments of A11, the predetermined range is within ten degrees.

[0102] (A13) In some embodiments of A11, the AR glasses also include a first pair of fittings for securing the hinge base to the frame and a second pair of fittings for securing the hinge base to the frame arm.

[0103] (A14) In some embodiments of A11, the stiffness of the preload spring is between 29 N / mm and 37 N / mm.

[0104] (B1) According to some embodiments, the hinge system of the augmented reality glasses includes a main hinge including a main pivot axis that defines movement of a temple arm attached to the eyeglass frame. The main pivot axis provides a rotational axis during closure and extension of the temple arm relative to the eyeglass frame between a first position and a second position. The augmented reality glasses also include a secondary hinge including a secondary pivot axis along the outer edge of the temple arm, wherein the secondary pivot axis is parallel to the main pivot axis. The secondary pivot axis provides a rotational axis during overextension of the temple arm relative to the eyeglass frame. The augmented reality glasses also include an AR projection system coupled to the eyeglass frame, and a battery located in the temple arm configured to provide power to the AR projection system coupled to the eyeglass frame. For example, Figure 9 An overextended hinge coupled to a temple arm is shown, the temple arm including a battery and a circuit board 900 housed within the temple arm, the circuit board including one or more components for providing an extended reality experience.

[0105] (B2) In some embodiments of B1, overstretching occurs when the angle between the frame arm and the eyeglass frame exceeds 90 degrees.

[0106] (B2) In some embodiments of any of B1 to B2, the hinge module is capable of overextension up to ten degrees.

[0107] (C1) According to some embodiments, the temple arm of the augmented reality glasses includes a main hinge including a main pivot axis that defines movement of the temple arm attached to the eyeglass frame. The main pivot axis provides a rotational axis during closure and extension of the temple arm relative to the eyeglass frame between a first position and a second position. The augmented reality glasses also include a secondary hinge including a secondary pivot axis along the outer edge of the temple arm. The secondary pivot axis is parallel to the main pivot axis, wherein the secondary pivot axis provides a rotational axis during overextension of the temple arm relative to the eyeglass frame. The temple arm includes one or more components configured to be coupled to an AR projection system coupled to the eyeglass frame, and the temple arm includes a battery located within the temple arm configured to provide power to the AR projection system coupled to the eyeglass frame.

[0108] (C2) In some embodiments of C1, overstretching occurs when the angle between the temple and the eyeglass frame exceeds 90 degrees.

[0109] (C3) In some embodiments of any of C1 to C2, the hinge module is capable of overextension up to ten degrees.

[0110] Example Extended Reality System Figure 13A , Figure 13B , Figure 13C-1 and Figure 13C-2 An example XR system, including an AR system and an MR system, is shown according to some embodiments. Figure 13A The first XR system 1300a and a first example user interaction using a wrist wearable device 1326, a head wearable device (e.g., an AR device 1328) and / or a HIPD 1342 are shown. Figure 13B The second XR system 1300b and a second example user interaction using a wrist wearable device 1326, an AR device 1328 and / or a HIPD 1342 are shown. Figure 13C-1 and Figure 13C-2A third MR system 1300c and a third example user interaction using a wrist wearable device 1326, a head wearable device (e.g., an MR device such as a VR device), and / or a HIPD 1342 are illustrated. As those skilled in the art will understand upon reading the description provided herein, the example AR and MR systems described above (described in detail above) can perform various functions and / or operations.

[0111] The wrist-worn wearable device 1326, the head-worn wearable device, and / or the HIPD 1342 can be communicatively coupled via a network 1325 (e.g., cellular, near-field, Wi-Fi, personal area network, or wireless LAN). Furthermore, the wrist-worn wearable device 1326, the head-worn wearable device, and / or the HIPD 1342 can also be communicatively coupled via the network 1325 to one or more servers 1330, computers 1340 (e.g., laptops or computers), mobile devices 1350 (e.g., smartphones or tablets), and / or other electronic devices. Similarly, textile-based smart clothing can also be communicatively coupled via the network 1325 to the wrist-worn wearable device 1326, one or more head-worn wearable devices, the HIPD 1342, one or more servers 1330, computers 1340, mobile devices 1350, and / or other electronic devices during use.

[0112] Go to Figure 13AThe illustration shows a user 1302 wearing a wrist-worn wearable device 1326 and an AR device 1328, with a HIPD 1342 placed on their table. The wrist-worn wearable device 1326, AR device 1328, and HIPD 1342 facilitate the user's interaction with the AR environment. Specifically, as shown in the first XR system 1300a, the wrist-worn wearable device 1326, AR device 1328, and / or HIPD 1342 enable the presentation of one or more avatars 1304, digital representations of contacts 1306, and virtual objects 1308. As described below, the user 1302 can interact with one or more avatars 1304, digital representations of contacts 1306, and virtual objects 1308 via the wrist-worn wearable device 1326, AR device 1328, and / or HIPD 1342. Furthermore, the user 1302 can also directly view physical objects in the environment (e.g., a physical table 1329) through one or more transparent lenses and one or more waveguides of the AR device 1328. Alternatively, an MR device can be used instead of an AR device 1328, and a similar user experience can occur, but instead of directly viewing physical objects in the environment (e.g., table 1329), the user will see a virtual reconstruction of table 1329 generated from one or more sensors of the MR device (e.g., an outward-facing camera capable of recording the surrounding environment).

[0113] User 1302 may provide user input using any of the following: wrist wearable device 1326, AR device 1328 (e.g., through physical input at the AR device and / or built-in motion tracking of the user's limbs), smart textile clothing, externally mounted limb tracking devices, or HIPD 1342. For example, user 1302 may perform one or more gestures detected by wrist wearable device 1326 (e.g., using one or more EMG sensors and / or IMUs built into the wrist wearable device) and / or AR device 1328 (e.g., using one or more image sensors or cameras) to provide user input. Alternatively or additionally, user 1302 may provide user input via one or more touch surfaces of wrist wearable device 1326, AR device 1328, and / or HIPD 1342, and / or voice commands acquired by the microphones of wrist wearable device 1326, AR device 1328, and / or HIPD 1342. The wrist-worn wearable device 1326, AR device 1328, and / or HIPD 1342 include an artificial intelligence digital assistant to help the user provide user input (e.g., complete a series of actions, suggest different actions or commands, provide reminders, confirm commands). For example, the digital assistant can be invoked by input occurring at AR device 1328 (e.g., input via the temple arm of AR device 1328). In some embodiments, the user 1302 can provide user input via one or more facial gestures and / or facial expressions. For example, the camera of the wrist-worn wearable device 1326, AR device 1328, and / or HIPD 1342 can track the user 1302's eyes to navigate the user interface.

[0114] The wrist-worn wearable device 1326, AR device 1328, and / or HIPD 1342 can operate individually or in combination to allow user 1302 to interact with an AR environment. In some embodiments, HIPD 1342 is configured to operate as a central hub or control center for the wrist-worn wearable device 1326, AR device 1328, and / or another communication-coupled device. For example, user 1302 can provide input to interact with the AR environment at any of the wrist-worn wearable device 1326, AR device 1328, and / or HIPD 1342, and HIPD 1342 can identify one or more backend and frontend tasks to perform the requested interaction and issue instructions to perform one or more backend and frontend tasks at the wrist-worn wearable device 1326, AR device 1328, and / or HIPD 1342. In some embodiments, backend tasks are user-invisible background processing tasks (e.g., rendering content, decompression, compression, dedicated operations), while frontend tasks are user-perceptible user-facing tasks (e.g., presenting information to the user, providing feedback to the user). HIPD 1342 can perform backend tasks and provide operation data corresponding to the performed backend tasks to the wrist wearable device 1326 and / or AR device 1328, enabling the wrist wearable device 1326 and / or AR device 1328 to perform frontend tasks. In this way, compared to the wrist wearable device 1326 and / or AR device 1328, HIPD 1342, with more computing resources and greater thermal headroom, performs computationally intensive tasks and reduces the computer resource utilization and / or power consumption of the wrist wearable device 1326 and / or AR device 1328.

[0115] In the example shown in the first XR system 1300a, HIPD 1342 identifies one or more backend and frontend tasks associated with a user request to initiate an AR video call with one or more other users (represented by avatar 1304 and contact's digital representation 1306). Specifically, HIPD 1342 performs backend tasks for processing and / or rendering image data (and other data) associated with the AR video call and provides operational data associated with the performed backend tasks to AR device 1328, causing AR device 1328 to perform frontend tasks for presenting the AR video call (e.g., presenting avatar 1304 and contact's digital representation 1306).

[0116] In some embodiments, HIPD 1342 can operate as a focus or anchor point for presenting information. This allows user 1302 to generally know where the information is presented. For example, as shown in the first XR system 1300a, an avatar 1304 and a digital representation 1306 of a contact are presented above HIPD 1342. Specifically, HIPD 1342 and AR device 1328 operate in conjunction to determine the location for presenting the avatar 1304 and the digital representation 1306 of the contact. In some embodiments, information can be presented within a predetermined distance from HIPD 1342 (e.g., within five meters). For example, as shown in the first XR system 1300a, a virtual object 1308 is presented on a table at a distance from HIPD 1342. Similar to the examples above, HIPD 1342 and AR device 1328 can operate in conjunction to determine the location for presenting the virtual object 1308. Alternatively, in some embodiments, the presentation of information is not constrained by HIPD 1342. More specifically, the avatar 1304, the digital representation of the contact 1306, and the virtual object 1308 do not need to be presented within the predetermined distance of the HIPD 1342. Although the AR device 1328 is described working with the HIPD, the MR headset can interact in the same way as the AR device 1328.

[0117] User input provided at the wrist-worn wearable device 1326, the AR device 1328, and / or the HIPD 1342 is coordinated to allow the user to initiate, continue, and / or complete an operation using any device. For example, user 1302 may provide user input to the AR device 1328 to cause the AR device 1328 to render a virtual object 1308, and when the virtual object 1308 is rendered by the AR device 1328, user 1302 may provide one or more gestures via the wrist-worn wearable device 1326 to interact with and / or manipulate the virtual object 1308. Although the AR device 1328 is described working in conjunction with the wrist-worn wearable device 1326, the MR headset can interact in the same manner as the AR device 1328.

[0118] Integration of Artificial Intelligence (AI) with XR Systems Figure 13A The following interaction illustrates an AI virtual assistant that can assist user 1302 in making requests. The AI ​​virtual assistant can be used to fulfill open-ended requests made by user 1302 through natural language input. For example, in... Figure 13AIn this scenario, user 1302 issues an auditory request 1344 to summarize the conversation and then shares the summarized conversation with others in the meeting. Furthermore, the AI ​​virtual assistant is configured to use sensors from the XR system (e.g., the camera and microphone of the XR headset, and various other sensors from any other device in the system) to provide the user with contextual cues for initiating tasks.

[0119] Figure 13A Example neural network 1353 used in artificial intelligence applications is also shown. The uses of artificial intelligence (AI) are diverse and encompass many different aspects of the devices and systems described herein. AI capabilities cover a wide range of applications and enhance the interaction between user 1302 and user devices such as AR device 1328, MR device 1332, HIPD 1342, and wrist-worn wearable device 1326. The AI ​​discussed herein can be obtained using many different training techniques. While the primary example of an AI model discussed herein is a neural network, other AI models can also be used. Non-limiting examples of AI models include artificial neural networks (ANNs), deep neural networks (DNNs), convolutional neural networks (CNNs), recurrent neural networks (RNNs), large language models (LLMs), long short-term memory networks, transformer models, decision trees, random forests, support vector machines, k-nearest neighbors, genetic algorithms, Markov models, Bayesian networks, fuzzy logic systems, and deep reinforcement learning, among others. The AI ​​models can be implemented on one or more user devices and / or any other devices described herein. For devices and systems employing multiple AI models as described herein, different models can be used depending on the task. For example, an LLM can be used for a natural language AI virtual assistant, while a DNN can be used for object detection in a physical environment.

[0120] In another example, an AI virtual assistant may include many different AI models, and multiple AI models may be employed (concurrently, sequentially, or in combination) based on the user's request. For example, an LLM-based AI model may provide instructions to help the user follow a recipe, and these instructions may be based in part on another AI model derived from ANN, DNN, RNN, etc., which can identify which part of the recipe the user is on (e.g., object and scene detection).

[0121] As AI training models develop, the operations and experiences described herein may be performed using different models other than those listed above, and those skilled in the art will understand that the above-listed content is non-limiting.

[0122] User 1302 can interact with the AI ​​model through natural language input, text input, or any other input modality, including natural language and / or the corresponding voice sensor module, acquired by the voice sensor. In another instance, input is provided by tracking user 1302's eye gaze via a gaze tracker module. Furthermore, the AI ​​model can also receive input beyond what user 1302 provides. For example, the AI ​​can further generate its response based on environmental input acquired by various types of sensors and / or their corresponding sensor modules in response to a user request (e.g., temperature data, image data, video data, ambient light data, audio data, GPS location data, inertial measurement (i.e., user motion) data, pattern recognition data, magnetometer data, depth data, pressure data, force data, neuromuscular data, heart rate data, temperature data, sleep data). Sensor data can be retrieved entirely from a single device (e.g., AR device 1328) or from multiple devices communicating with each other (e.g., a system including at least two of AR device 1328, MR device 1332, HIPD 1342, wrist-worn wearable device 1326, etc.). The AI ​​model can also access additional information (e.g., one or more servers 1330, computer 1340, mobile device 1350, and / or other electronic devices) via network 1325.

[0123] A non-limiting list of AI-enhanced capabilities includes, but is not limited to, image recognition, speech recognition (e.g., automatic speech recognition), text recognition (e.g., scene text recognition), pattern recognition, natural language processing and understanding, classification, regression, clustering, anomaly detection, sequence generation, content generation, and optimization. In some embodiments, the AI-enhanced capabilities are executed, wholly or partially, on a cloud computing platform coupled to a user device (e.g., AR device 1328, MR device 1332, HIPD 1342, wrist-worn wearable device 1326) via one or more network communications. The cloud computing platform provides scalable computing resources, distributed computing, managed AI services, interference acceleration, pre-trained models, APIs, and / or other resources to support the comprehensive computation required for the AI-enhanced capabilities.

[0124] Example outputs derived from the use of AI models may include natural language responses, mathematical calculations, charts displaying information, audio, images, videos, text, meeting summaries, predictions based on environmental factors, classification, pattern recognition, suggestions, evaluations, or other operations. In some embodiments, the generated output is stored on the local memory of a user device (e.g., AR device 1328, MR device 1332, HIPD 1342, wrist-worn wearable device 1326), on storage options of external devices (servers, computers, mobile devices, etc.), and / or on storage options of a cloud computing platform.

[0125] AI-based outputs can be presented across different modalities (e.g., audio-based, visual-based, haptic-based, and any combination thereof) and across different devices within the XR system described herein. Some visual-based outputs may include displaying information on XR enhancements of XR headsets, displaying user interfaces on wrist-worn devices, knee-mounted devices, mobile devices, etc. On devices with or without displays (e.g., HIPD 1342), haptic feedback may provide information to user 1302. The AI ​​model may also use the above inputs to determine the appropriate modality and one or more devices to present content to the user (e.g., audio output may be presented instead of visual output to a user walking on a congested road to avoid distracting user 1302).

[0126] Example of augmented reality interaction Figure 13B The illustration shows a user 1302 wearing a wrist-worn wearable device 1326 and an AR device 1328 while holding a HIPD 1342. In the second XR system 1300b, the wrist-worn wearable device 1326, the AR device 1328, and / or the HIPD 1342 are used to receive one or more messages and / or provide one or more messages to the user 1302's contacts. Specifically, the wrist-worn wearable device 1326, the AR device 1328, and / or the HIPD 1342 detect and coordinate one or more user inputs to initiate a messaging application and prepare a response to messages received via the messaging application.

[0127] In some embodiments, user 1302 launches an application on wrist wearable device 1326, AR device 1328, and / or HIPD 1342 via user input, which launches the application on at least one device. For example, in the second XR system 1300b, user 1302 performs a gesture associated with a command to launch (represented by messaging user interface 1312) a messaging application; wrist wearable device 1326 detects the gesture; and based on determining that user 1302 is wearing AR device 1328, causes AR device 1328 to present the messaging user interface 1312 of the messaging application. AR device 1328 may present messaging user interface 1312 to user 1302 via its display (e.g., as shown in user 1302's field of view 1310). In some embodiments, the application is launched and can run on a device that detects user input to launch the application (e.g., wrist wearable device 1326, AR device 1328, and / or HIPD 1342), and the device provides other device operation data to cause the presentation of the messaging application. For example, wrist wearable device 1326 may detect user input for launching the messaging application, launch and run the messaging application, and provide operation data to AR device 1328 and / or HIPD 1342 to cause the presentation of the messaging application. Alternatively, the application can be launched and run on a device other than the device that detects user input. For example, wrist wearable device 1326 may detect a gesture associated with launching the messaging application and cause HIPD 1342 to run the messaging application and coordinate the presentation of the messaging application.

[0128] Furthermore, user 1302 can provide user input at the wrist wearable device 1326, AR device 1328, and / or HIPD 1342 to continue and / or complete an operation initiated at another device. For example, after launching a messaging application via the wrist wearable device 1326, and when the AR device 1328 presents the messaging user interface 1312, user 1302 can provide input at HIPD 1342 to prepare a reply (e.g., indicated by a swipe gesture performed on HIPD 1342). The gesture performed by user 1302 on HIPD 1342 can be provided and / or displayed on another device. For example, the swipe gesture performed by user 1302 on HIPD 1342 is displayed on the virtual keyboard of the messaging user interface 1312 displayed by AR device 1328.

[0129] In some embodiments, the wrist wearable device 1326, AR device 1328, HIPD 1342, and / or other communication-coupled devices may present one or more notifications to the user 1302. The notification may be an indication of a new message, incoming call, application update, status update, etc. The user 1302 may select a notification via the wrist wearable device 1326, AR device 1328, or HIPD 1342, and cause the application or action associated with the notification to be presented on at least one device. For example, the user 1302 may receive a notification that a message has been received at the wrist wearable device 1326, AR device 1328, HIPD 1342, and / or other communication-coupled devices, and provide user input at the wrist wearable device 1326, AR device 1328, and / or HIPD 1342 to view the notification, and the device detecting the user input may cause the application associated with the notification to be launched and / or presented at the wrist wearable device 1326, AR device 1328, and / or HIPD 1342.

[0130] While the examples above describe coordinated input for interacting with messaging applications, those skilled in the art will understand upon reading this specification that user input can be coordinated to interact with any number of applications, including but not limited to gaming applications, social media applications, camera applications, web-based applications, financial applications, etc. For example, AR device 1328 can present game application data to user 1302, and HIPD 1342 can use a controller to provide input to the game. Similarly, user 1302 can use wrist-worn wearable device 1326 to activate the camera of AR device 1328, and the user can use wrist-worn wearable device 1326, AR device 1328, and / or HIPD 1342 to manipulate image acquisition (e.g., zoom in or out, or apply filters) and acquire image data.

[0131] While AR device 1328 is shown as capable of performing certain functions, it should be understood that AR devices can have different functions based on cost and market demand. For example, an AR device may include a single output modality, such as an audio output modality. In another example, an AR device may include a low-fidelity display as one of the output modalities, where simple information (e.g., text and / or low-fidelity images / videos) can be presented to the user. In yet another example, an AR device may be configured with face-facing light-emitting diodes (LEDs) configured to provide information to the user; for example, LEDs around the right lens may illuminate to indicate to the wearer to turn right when direction is provided, or LEDs on the left lens may illuminate to indicate to the wearer to turn left when direction is provided. In another embodiment, an AR device may include an outward-facing projector such that information (e.g., text information, media) can be displayed on the user's palm or other suitable surface (e.g., a table, a whiteboard). In yet another embodiment, information may also be provided by locally dimming multiple portions of the lens to emphasize the portion of the environment where the user's attention should be directed. Some AR devices can render AR augmentations monocularly or binocularly (e.g., AR augmentations can be rendered only on a single display associated with a single lens, rather than on both lenses, to produce a binocular image). In some cases, AR devices capable of binocular AR augmentations may also optionally display AR augmentations monocularly (e.g., for power saving or other presentation considerations). These examples are not exhaustive, and features of one AR device described above can be combined with features of another AR device described above. While the features and experiences of AR devices have been broadly described in the preceding sections, it should be understood that the described features and experiences can be applied in a similar manner to MR headsets, as described in the following sections.

[0132] Example of mixed reality interaction Turn Figure 13C-1 and Figure 13C-2User 1302 is shown wearing a wrist-worn wearable device 1326 and an MR device 1332 (e.g., a device capable of providing a full VR experience or displaying objects from the physical environment on a device display) and holding a HIPD 1342. In the third MR system 1300c, the wrist-worn wearable device 1326, the MR device 1332, and / or the HIPD 1342 are used for interaction within an MR environment (such as a VR game or other MR / VR application). When the MR device 1332 presents a representation of a VR game to user 1302 (e.g., a first MR game environment 1320), the wrist-worn wearable device 1326, the MR device 1332, and / or the HIPD 1342 detect and coordinate one or more user inputs to allow user 1302 to interact with the VR game.

[0133] In some embodiments, user 1302 may provide user input via wrist-worn wearable device 1326, MR device 1332, and / or HIPD 1342, which triggers an action in the corresponding MR environment. For example, a third MR system 1300c (such as...) Figure 13C-1 In the example shown, user 1302 raises HIPD 1342 in preparation for swinging it in the first MR game environment 1320. MR device 1332 responds to user 1302 raising HIPD 1342 by causing the user's MR representation 1322 to perform a similar action (e.g., raising a virtual object, such as a virtual sword 1324). In some embodiments, each device uses its own sensor data and / or image data to detect user input and provide an accurate representation of user 1302's movement. For example, the image sensor of HIPD 1342 (such as a SLAM camera or other camera) can be used to detect the position of HIPD 1342 relative to the body of user 1302, so that virtual objects can be properly positioned within the first MR game environment 1320; sensor data from the wrist wearable device 1326 can be used to detect the speed at which user 1302 raises HIPD 1342, so that the user's MR representation 1322 and virtual sword 1324 are synchronized with the movement of user 1302; and the image sensor of MR device 1332 can be used to represent the body of user 1302, boundary conditions, or real-world objects within the first MR game environment 1320.

[0134] exist Figure 13C-2In this scenario, user 1302 performs a downward swing while holding HIPD 1342. The downward swing by user 1302 is detected by wrist wearable device 1326, MR device 1332, and / or HIPD 1342, and a corresponding action is performed within the first MR gaming environment 1320. In some embodiments, data collected by each device is used to improve the user's experience in the MR environment. For example, sensor data from wrist wearable device 1326 can be used to determine the speed and / or force of the downward swing, and image sensors from HIPD 1342 and / or MR device 1332 can be used to determine the location of the swing and how it should be represented in the first MR gaming environment 1320. These can then be used as input to the MR environment (e.g., game mechanics that can use the detected speed, force, location, and / or aspects of user 1302's actions to classify user inputs (e.g., the user performs a light strike, heavy strike, critical strike, blitzkrieg, miss) or calculate outputs (e.g., damage amount)).

[0135] Figure 13C-2 It is also shown that when the MR game environment 1320 is being displayed, a portion of the physical environment is reconstructed and displayed on the display of the MR device 1332. In this case, when one or more objects in the physical environment are potentially in the user's path (e.g., the user may collide with objects in the physical environment), the reconstruction of the physical environment 1346 is displayed instead of a portion of the MR game environment 1320. Thus, this example MR game environment 1320 includes (i) an immersive VR portion 1348 (e.g., an environment that has no necessary counterpart in the nearby physical environment) and (ii) a reconstruction of the physical environment 1346 (e.g., table 1350 and cup 1352). Although the example shown herein illustrates an MR environment where the reconstruction of the physical environment is used to avoid collisions, other uses of the reconstruction of the physical environment can be employed, such as defining the characteristics of the virtual environment based on the surrounding physical environment (e.g., virtual pillars can be placed based on objects in the surrounding physical environment, such as trees).

[0136] While the wrist-worn wearable device 1326, MR device 1332, and / or HIPD 1342 are described as detecting user input, in some embodiments, user input is detected at a single device (the single device is responsible for distributing signals to other devices to execute the user input). For example, HIPD 1342 may operate an application for generating a first MR game environment 1320 and provide corresponding data to MR device 1332 for inducing the presentation of the first MR game environment 1320, as well as detect the movement of user 1302 (when holding HIPD 1342) to induce the execution of corresponding actions within the first MR game environment 1320. Additionally or alternatively, in some embodiments, operational data from one or more devices (e.g., sensor data, image data, application data, device data, and / or other data) is provided to a single device (e.g., HIPD 1342) to process the operational data and cause the corresponding device to perform actions associated with the processed operational data.

[0137] In some embodiments, user 1302 may wear a wrist-worn wearable device 1326, a wearable MR device 1332, a textile-based smart garment 1338 (e.g., a wearable haptic glove), and / or hold a HIPD 1342 device. In this embodiment, the wrist-worn wearable device 1326, the MR device 1332, and / or the textile-based smart garment 1338 are used in an MR environment (e.g., as referenced above). Figure 13A and Figure 13B Interaction occurs within any AR or MR system described. When the MR device 1332 presents a representation of an MR game (e.g., a second MR game environment 1320) to the user 1302, the wrist wearable device 1326, the MR device 1332, and / or the textile-based smart garment 1338 detect and coordinate one or more user inputs to allow the user 1302 to interact with the MR environment.

[0138] In some embodiments, user 1302 may provide user input via wrist wearable device 1326, HIPD 1342, MR device 1332, and / or textile-based smart clothing 1338, which elicits movement in the corresponding MR environment. In some embodiments, each device uses its own sensor data and / or image data to detect user input and provide an accurate representation of user 1302's movement. Although four different input devices are shown (e.g., wrist wearable device 1326, MR device 1332, HIPD 1342, and textile-based smart clothing 1338), each of these input devices can provide input entirely independently for full interaction with the MR environment. For example, the wrist wearable device can provide sufficient input independently for interaction with the MR environment. In some embodiments, if multiple input devices (e.g., the wrist wearable device and the textile-based smart clothing 1338) are used, sensor fusion can be utilized to ensure that the input is correct. Although multiple input devices have been described, it should be understood that other input devices may be used in combination or individually, such as, but not limited to, external motion-tracking cameras, other wearable devices adapted to different parts of the user's body, and devices that allow the user to experience walking in the MR environment while remaining essentially still in the physical environment.

[0139] As described above, the data collected by each device is used to improve the user experience in the MR environment. Although not shown, the textile-based smart clothing 1338 can be used in conjunction with MR devices and / or HIPD 1342.

[0140] While some experiences are described as taking place on AR devices and others on MR devices, those skilled in the art will understand that experiences can be ported from MR devices to AR devices and vice versa.

[0141] For ease of reference, this document defines some of the devices and components that may be included in some or all of the example devices discussed. Those skilled in the art will understand that certain types of components described may be more suitable for a particular set of devices and less suitable for different groups of devices. However, subsequent references to components defined herein should be considered as included in the provided definitions.

[0142] In some embodiments, example devices and systems, including electronic devices and systems, will be discussed. Such example devices and systems are not intended to be limiting, and those skilled in the art will understand that alternative devices and systems to the example devices and systems described herein can be used to perform operations and construct the systems and devices described herein.

[0143] As described herein, an electronic device is a device that uses electrical energy to perform a specific function. An electronic device can be any physical object containing electronic components, such as transistors, resistors, capacitors, diodes, and integrated circuits. Examples of electronic devices include smartphones, laptops, digital cameras, televisions, game consoles, and music players, as well as the example electronic devices discussed herein. As described herein, an intermediate electronic device is a device that is located between two other electronic devices and / or subsets of components of one or more electronic devices and facilitates communication, and / or data processing and / or data transmission between the respective electronic devices and / or electronic components.

[0144] Any data collection performed by the devices described herein and / or any device configured to perform the different embodiments described with reference to any of the figures above (hereinafter referred to as "devices") is conducted in a manner that complies with all applicable privacy regulations and with the user's consent. Users may choose to allow the devices to collect data, or to restrict or refuse such collection. Users can opt in or out of any data collection at any time. Furthermore, users may choose to request the deletion of any collected data.

[0145] It should be understood that although the terms "first," "second," etc., may be used in this document to describe various elements, these elements should not be limited by these terms. These terms are only used to distinguish one element from another.

[0146] The terminology used herein is for the purpose of describing particular embodiments only and not for limiting the claims. As used in the description of the embodiments and the appended claims, the singular forms “a,” “an,” and “the” are also intended to include the plural forms unless the context clearly indicates otherwise. It should also be understood that the term “and / or” as used herein refers to and includes any and all possible combinations of one or more of the associated listed items. It will also be understood that the terms “comprising” and / or “including”, when used in this specification, specify the presence of the stated features, integers, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and / or combinations thereof.

[0147] As used herein, the term "if" can be interpreted as meaning "when" or "based on" or "in response to determination" or "according to determination" or "in response to detection" the stated prerequisite is true, depending on the context. Similarly, the phrases "if it is determined [the prerequisite is true]" or "if [the prerequisite is true]" or "when [the prerequisite is true]" can be interpreted as meaning "at the time of determination" or "in response to determination" or "according to determination" or "in the event of detection" or "in response to detection" the stated prerequisite is true, depending on the context.

[0148] For illustrative purposes, the foregoing description has been illustrated with reference to specific embodiments. However, the illustrative discussion above is not intended to be exhaustive or to limit the claims to the precise forms disclosed. Many modifications and variations are possible in light of the above teachings. The embodiments were chosen and described in order to best explain the principles of operation and practical application, thereby enabling others skilled in the art to implement them.

Claims

1. An augmented reality (AR) glasses, the AR glasses comprising: A main hinge, the main hinge including a main pivot axis defining movement of a temple arm attached to the eyeglass frame, wherein the main pivot axis provides a rotation axis during the temple arm's closure and extension relative to the eyeglass frame between a first position and a second position; A secondary hinge, the secondary hinge including a secondary pivot axis along the outer edge of the temple arm, wherein the secondary pivot axis is parallel to the primary pivot axis, and wherein the secondary pivot axis provides a rotation axis during overextension of the temple arm relative to the eyeglass frame; An AR projection system, the AR projection system being coupled to the eyeglasses frame; and A battery, located in the temple arm, is configured to power the AR projection system coupled to the eyeglass frame.

2. The AR glasses according to claim 1, wherein, Overstretching occurs when the angle between the temple arm and the eyeglass frame exceeds 90 degrees.

3. The AR glasses according to claim 1, wherein, The secondary hinge can overextend up to ten degrees.

4. The AR glasses according to claim 1, wherein, After the main pivot axis achieves maximum rotation, the secondary pivot axis rotates.

5. The AR glasses according to claim 1, wherein, The secondary hinge includes a spring that biases the temple arm to the second position during overextension.

6. The AR glasses according to claim 5, wherein, The spring is one of a leaf spring, a helical spring, or a torsion spring.

7. The AR glasses according to claim 1, wherein, The main hinge and the secondary hinge are configured to allow the passage of flexible circuitry that electrically couples at least the AR projection system to the battery.

8. The AR glasses according to claim 1, wherein, The secondary hinge includes a stop that limits the overextension of the temple arm by more than ten degrees.

9. The AR glasses according to claim 1, wherein, The secondary hinge is capable of overextension along the additional rotation axis, and the AR glasses include a spring that controls movement along both the secondary pivot axis and the additional rotation axis.

10. The AR glasses according to claim 1, wherein, A portion of the secondary hinge is coupled to the temple arm by one or more of welding, fasteners, and adhesives.

11. The AR glasses according to claim 1, wherein, The secondary hinge includes: Hinge base; A paddle-shaped object connected to the hinge base via a travel pin, wherein the paddle-shaped object includes a cylindrical support surface to receive the travel pin and allows the hinge base to move relative to the paddle-shaped object along a predetermined range; and A preload spring maintains a basic position between the hinge base and the paddle, wherein movement of the hinge base relative to the paddle along the predetermined range requires a force corresponding to the stiffness of the preload spring.

12. The AR glasses according to claim 11, wherein, The predetermined range is within ten degrees.

13. The AR glasses of claim 11, further comprising a first pair of fittings for securing the hinge base to the frame and a second pair of fittings for securing the hinge base to the frame arm.

14. The AR glasses according to claim 11, wherein, The stiffness of the preloaded spring is between 29 N / mm and 37 N / mm.

15. A hinge system for augmented reality glasses, the hinge system comprising: A main hinge, the main hinge including a main pivot axis defining movement of a temple arm attached to the eyeglass frame, wherein the main pivot axis provides a rotation axis during the temple arm's closure and extension relative to the eyeglass frame between a first position and a second position; A secondary hinge, the secondary hinge including a secondary pivot axis along the outer edge of the temple arm, wherein the secondary pivot axis is parallel to the primary pivot axis, and wherein the secondary pivot axis provides a rotation axis during overextension of the temple arm relative to the eyeglass frame; An AR projection system, the AR projection system being coupled to the eyeglasses frame; and A battery, located in the temple arm, is configured to power the AR projection system coupled to the eyeglass frame.

16. The hinge system according to claim 15, wherein, Overstretching occurs when the angle between the temple arm and the eyeglass frame exceeds 90 degrees.

17. The hinge system according to claim 15, wherein, The secondary hinge can overextend up to ten degrees.

18. A temple arm for augmented reality glasses, the temple arm comprising: A main hinge, the main hinge including a main pivot axis defining movement of a temple arm attached to the eyeglass frame, wherein the main pivot axis provides a rotation axis during the temple arm's closure and extension relative to the eyeglass frame between a first position and a second position; A secondary hinge, the secondary hinge including a secondary pivot axis along the outer edge of the temple arm, wherein the secondary pivot axis is parallel to the primary pivot axis, and wherein the secondary pivot axis provides a rotation axis during overextension of the temple arm relative to the eyeglass frame; An AR projection system, the AR projection system being coupled to the eyeglasses frame; and A battery, located in the temple arm, is configured to power the AR projection system coupled to the eyeglass frame.

19. The temple arm of the augmented reality glasses according to claim 18, wherein, Overstretching occurs when the angle between the temple arm and the eyeglass frame exceeds 90 degrees.

20. The temple arm of the augmented reality glasses according to claim 18, wherein, The secondary hinge can overextend up to ten degrees.

Images