Electronic device with housing slot antenna

Abstract

The invention relates to an electronic device with a housing slot antenna. An electronic device, such as a head-mounted display device, may include an outer conductive chassis and wireless circuitry. The wireless circuitry may include an antenna. The antenna may have an antenna resonating element formed by a slot in the conductive chassis. The antenna may have antenna feed terminals coupled to the conductive chassis on opposite sides of the slot. As an example, the slot may form a thermal vent, a sensor window, a charging port, a card port, an acoustic port, or a button opening of the device.

Description

[0001] This application claims priority to U.S. Patent Application No. 18 / 777,404 filed on July 18, 2024 and U.S. Provisional Patent Application No. 63 / 584,851 filed on September 22, 2023, which are hereby incorporated by reference in their entirety. Technical Field

[0002] The present disclosure relates generally to electronic devices, including electronic devices having wireless communication capabilities. Background Art

[0003] Electronic devices typically have a display for displaying images to a user. Such devices may include head mounted displays and may have wireless circuits with antennas.

[0004] If care is not taken, a head mounted display may be subject to excessive thermal loads. Incorporating antennas into a head mounted display that exhibit a satisfactory level of wireless performance may also be challenging. Summary of the invention

[0005] The head mounted device may have a housing. The housing may have an inner conductive housing mounted to an outer conductive housing. A logic board may be mounted to the inner conductive housing. A left display and a right display may be mounted to the logic board and may display an image at a rear portion of the device. A cover may be mounted to the outer conductive housing at a front portion of the device. The cover may have a composite or three-dimensional curved surface. A forward facing display may be mounted to the cover and may display an image through the cover.

[0006] The device may have wireless circuitry with an antenna. The antenna may have an antenna resonating element formed by one or more slots in the outer conductive housing. The antenna may have an antenna feed coupled to the outer conductive housing across the slot. As examples, the slot may form a thermal vent, a sensor window, a charging port, a card port, an acoustic port, or a button opening for the device.

[0007] One aspect of the present disclosure provides a head mounted device. The head mounted device may include a first conductive housing. The head mounted device may include a logic board mounted to the first conductive housing. The head mounted device may include a first display and a second display mounted to the logic board and configured to display respective left and right images. The head mounted device may include a second conductive housing extending around the first conductive housing and the logic board. The head mounted device may include a cover mounted to the second conductive housing opposite to the first and second displays, the cover having a third display configured to display an image through the cover. The head mounted device may include an antenna having an antenna resonating element formed by a slot in the second conductive housing.

[0008] One aspect of the present disclosure provides an electronic device. The electronic device may include a conductive housing. The electronic device may include a vent in the conductive housing. The electronic device may include a fan that delivers air through the vent. The electronic device may include an antenna having an antenna feed terminal coupled to the conductive housing on opposite sides of the vent.

[0009] One aspect of the present disclosure provides an electronic device. The electronic device may include a conductive housing extending around the periphery of the electronic device. The electronic device may include a display mounted to the conductive housing. The electronic device may include a dielectric window in the conductive housing. The electronic device may include a first image sensor that overlaps the dielectric window and is configured to capture first image sensor data through the dielectric window. The electronic device may include a second image sensor that overlaps the dielectric window and is configured to capture second image sensor data through the dielectric window. The electronic device may include an antenna having an antenna feed terminal coupled to the conductive housing on the opposite side of the dielectric window. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 is a schematic diagram of components in an illustrative electronic device according to some embodiments.

[0011] Figure 2 is a cross-sectional top view of an illustrative electronic device according to some embodiments.

[0012] Figure 3 is a schematic diagram of an illustrative wireless circuit with an antenna according to some implementations.

[0013] Figure 4 is a circuit diagram of an illustrative wireless circuit having a transceiver that uses an antenna to transmit radio frequency signals, according to some implementations.

[0014] Figure 5 is a schematic diagram of an illustrative antenna having an enclosed slot antenna resonating element in accordance with some implementations.

[0015] Figure 6 is a schematic diagram of an illustrative antenna having an open slot antenna resonating element in accordance with some implementations.

[0016] Figure 7 is a perspective view of an illustrative electronic device having a slot antenna formed by thermal vents in an outer housing according to some embodiments.

[0017] Figure 8 is a cross-sectional side view showing how an exemplary slot antenna formed by thermal vents in an outer housing may be fed by a conductive spring in accordance with some embodiments.

[0018] Fig. 9 is a top view of an illustrative slot antenna formed by thermal vents in an outer housing, according to some embodiments.

[0019] Fig.10 and Fig.11 is an illustration of an illustrative slot antenna formed by a plurality of thermal vents in an outer housing, according to some embodiments.

[0020] Fig.12 is a perspective view of an illustrative electronic device having a slot antenna formed by a sensor window in an outer housing according to some embodiments.

[0021] Fig.13 is a top view of an illustrative slot antenna having different portions with different widths for accommodating sensors according to some embodiments.

[0022] Fig.14 is a perspective view showing how an exemplary slot antenna may be formed from different types of slots in an outer housing according to some embodiments. DETAILED DESCRIPTION

[0023] The electronic device may be provided with components such as an antenna. The electronic device may include portable electronic devices, wearable devices, desktop devices, embedded systems, and other electronic equipment. Illustrative configurations in which the electronic device includes a head-mounted device may sometimes be described herein as examples. The head-mounted device may have a first and a second rear-facing display and a front-facing display. The device may have a housing having a cover at the front side of the device. The cover may have a composite three-dimensional curved surface. The device may include an outer conductive housing and an inner conductive housing. The main logic board may be mounted to the inner conductive housing. The first and second rear-facing displays may be mounted to the logic board.

[0024] The device may include wireless circuitry having an antenna. The antenna may have an antenna resonating element formed by one or more slots in the outer conductive housing. The antenna may have an antenna feed coupled to the outer conductive housing across the slot. As examples, the slot may form a thermal vent, a sensor window, a charging port, a card port, an acoustic port, or a button opening for the device.

[0025] Figure 1An illustrative electronic device 10 is shown. The device 10 can operate in a system including external equipment 22 in addition to the device 10. In some specific implementations described as examples herein, the device 10 may include a head-mounted device (sometimes referred to herein as a head-mounted display device or simply a head-mounted display). If desired, the device 10 may include a portable electronic device (such as a laptop computer, a tablet computer, a media player, a cellular phone) or a wearable electronic device (such as a watch, a pendant or bracelet, headphones, earbuds, headphones) or other small portable devices. The device 10 can also be a larger device, such as a desktop computer, a display with or without an integrated computer, a set-top box, or a wireless access point or base station. If desired, the device 10 can be integrated into a larger device or system (such as a piece of furniture, a kiosk, a building, or a vehicle).

[0026] like Figure 1 As shown, device 10 may include a housing formed by one or more housing structures 12 (sometimes referred to herein as housing members 12). In embodiments where device 10 is a head-mounted device, housing structures 12 may include a support structure that is mountable or wearable on a user's head (sometimes referred to herein as a head-mounted support structure), thereby allowing the user to wear device 10 while using or operating device 10.

[0027] The head-mounted support structure in the housing structure 12 may have the shape of glasses or goggles and may support one or more lenses that align with one or more eyes of the user when the user is wearing the device 10. The head-mounted support structure in the housing structure 12 may include one or more rigid frames that help provide mechanical integrity, rigidity, and / or strength to the device 10 during use. In some specific implementations described as examples herein, the one or more rigid frames are formed of a conductive material. Therefore, the rigid frames may sometimes be referred to as conductive frames herein.

[0028] If desired, housing structure 12 may include other housing structures or housing members disposed on (e.g., layered on or over, attached to, etc.) and / or overlapping some or all of the conductive frame (e.g., a dielectric structure, a rubber structure, a ceramic structure, a glass structure, a fiber composite structure, a foam structure, a sapphire structure, a plastic structure, a decorative structure, etc.). These other housing structures may, for example, support one or more components of device 10, may help protect components of device 10 from damage or contamination, may help allow device 10 to be comfortably worn on a user's head, may help hide portions of the conductive frame from view, may contribute to a decorative or aesthetic appearance of device 10, etc.

[0029] Device 10 may include input / output (I / O) components such as I / O component 14. I / O component 14 may allow device 10 to provide output and / or other information to a user or other entity of device 10, and / or may allow device 10 to receive user input and / or other information from the user and / or other entity. I / O component 14 may include one or more displays such as display 18. Display 18 may emit light (sometimes referred to herein as image light) that is provided to the user's eyes for viewing. The light may include an image. The image may include image pixels. Many images may be provided sequentially over time (e.g., as a video). Display 18 in device 10 may include, for example, a left display and a right display. When a user wears device 10 on his head, the left display may provide light to the user's left eye, and the right display may provide light to the user's right eye.

[0030] I / O components 14 may also include wireless circuits, such as wireless circuits 16 (sometimes referred to herein as wireless communication circuits 16). Wireless circuits 16 may send radio frequency signals 24 to external equipment 22 and / or may receive radio frequency signals 24 from external equipment 22. External equipment 22 may include another device such as device 10 (e.g., another head-mounted device, a desktop computer, a laptop computer, a cellular phone, a tablet computer, a tethered computer, etc.), a peripheral device or accessory device (e.g., a user input device, a stylus, a device that recognizes user input associated with a gesture or motion made by a user, a game controller, a headset, etc.), a remote computing device (such as a remote server or a cloud computing segment), a wireless base station, a wireless access point, and / or any other desired device with wireless communication capabilities. In a specific implementation described as an example herein, external equipment 22 includes at least a first and a second peripheral device, such as a left and right headphone speaker or earphone. When a user wears device 10 on their head, the earphone may be worn by the user to provide audio content to the user's ears. Wireless circuits 16 may use radio frequency signals 24 to send audio content to the earphone.

[0031] I / O components 14 may also include other components (not shown), such as sensors, tactile output devices (e.g., one or more vibrators), non-display light sources (such as light emitting diodes), audio devices (such as speakers for producing audio output), wireless charging circuits for receiving wireless power for charging a battery on device 10 and / or for sending wireless power for charging batteries on other devices, batteries and / or other energy storage devices, buttons, mechanical adjustment components (e.g., components for adjusting one or more housing structures 12 to allow device 10 to be comfortably worn on a user's head and / or worn on other users' heads that may have different geometries), and / or other components.

[0032] The sensors in I / O component 14 may include image sensors (e.g., one or more visible light and / or infrared light cameras, a binocular three-dimensional image sensor that uses two or more cameras in a binocular configuration to collect three-dimensional images, a sensor that emits a light beam and uses a two-dimensional image sensor to collect image data for a three-dimensional image from light points produced when a target is illuminated by the light beam, a light detection and ranging (lidar) sensor, etc.), an acoustic sensor (such as a microphone or an ultrasonic sensor), a gaze tracking sensor (e.g., an optical system that emits one or more infrared light beams and uses an image sensor to track the one or more infrared light beams after the one or more infrared light beams are reflected from the eyes of a user who is wearing device 10), a touch sensor, a force sensor (e.g., a capacitive force sensor, a strain gauge, a resistance sensor, etc.), a proximity sensor (e.g., a capacitive proximity sensor and / or an optical proximity sensor), an ambient light sensor, a contact sensor, a pressure sensor, a moisture sensor, a gas sensor, a magnetic sensor, a motion sensor for sensing motion and / or position and / or orientation (e.g., a gyroscope, an accelerometer, a compass, and / or an inertial measurement unit (IMU), which includes two or more of these), and / or any other desired sensor.

[0033] The device 10 may also include one or more controllers 20 (sometimes referred to herein as control circuits 20). The controller 20 may include processing circuits and storage circuits. The processing circuits may be used to control the operation of the device 10 and may include one or more processors, such as a microprocessor, a digital signal processor, a microcontroller, a host processor, an application-specific integrated circuit, a baseband processor, a graphics processing unit, a central processing unit (CPU), etc. The storage circuits in the controller 20 may include one or more hard disks or hard disk drive storage devices, non-volatile memory (e.g., electrically programmable read-only memory configured to form a solid-state drive), volatile memory (e.g., static or dynamic random access memory), etc. If desired, the controller 20 may be configured to perform operations in the device 10 using hardware (e.g., dedicated hardware or circuits), firmware, and / or software. Software code for performing operations in the device 10 may be stored on a storage device and may be executed by a processing circuit in the controller 20.

[0034] The controller 20 runs software on the device 10, such as one or more software applications, an Internet browser, a game program, a Voice over Internet Protocol (VOIP) phone call application, a social media application, a driving or navigation application, an email application, a media playback application, operating system functions, etc. To support interaction with external equipment 22, the controller 20 may implement one or more communication protocols associated with (wireless) radio frequency signals 24. The communication protocols may include Internet protocols, wireless local area network protocols (e.g., IEEE 802.11 protocols—sometimes referred to as ), protocols for other short-range wireless communication links such as Protocol or other wireless personal area network (WPAN) protocols, IEEE 802.11ad protocol, cellular phone protocol, multiple-input and multiple-output (MIMO) protocol, antenna diversity protocol, satellite navigation system protocol, IEEE802.15.4 ultra-wideband communication protocol or other ultra-wideband communication protocols, non-Bluetooth protocols for ultra-low latency audio streaming, etc. Each communication protocol may be associated with a corresponding radio access technology (RAT) that specifies a physical connection method for implementing the protocol.

[0035] During operation, wireless circuit 16 may be used to support communication between device 10 and external equipment 22 (e.g., using radio frequency signal 24). For example, device 10 and / or external device 22 may send video data, application data, audio data, user input commands, and / or other data to each other (e.g., in one or both directions). If desired, device 10 and / or external equipment 22 may use wired and / or wireless communication circuits to communicate over one or more communication networks (e.g., the Internet, a local area network, etc.). If desired, device 10 may communicate with other terminal hosts via radio frequency signal 24 and external equipment 22 over the Internet. Wireless circuit 16 may allow device 10 to receive data from external equipment 22 and / or provide data to external equipment 22.

[0036] Although controller 20 is shown separately from radio circuitry 16 for clarity, radio circuitry 16 may include processing circuitry and / or memory circuitry that forms part of controller 20 (e.g., portions of controller 20 may be implemented on radio circuitry 16). As an example, controller 20 may include baseband circuitry (e.g., one or more baseband processors), digital control circuitry, analog control circuitry, and / or other control circuitry that forms part of radio circuitry 16. The baseband circuitry may, for example, access a communication protocol stack on controller 20 to: perform user plane functions at a PHY layer, a MAC layer, an RLC layer, a PDCP layer, a SDAP layer, and / or a PDU layer; and / or perform control plane functions at a PHY layer, a MAC layer, an RLC layer, a PDCP layer, an RRC layer, and / or a non-access layer.

[0037] Figure 2 is a top view of device 10. Figure 2 In the example of FIG. 1 , device 10 is a head-mounted device. In general, device 10 may be any suitable electronic equipment. Figure 2As shown, device 10 may include housing structure 12. Housing structure 12 may be configured to be worn on a user's head. Housing structure 12 may have a curved head-shaped surface, a nose bridge portion configured to rest on the user's nose when device 10 is on the user's head, may have a headband (such as strap 12C) for supporting device 10 on the user's head, and / or may have other features that allow a user to wear device 10.

[0038] The housing structure 12 may include one or more frame members, such as an outer housing 12A and an inner housing 12B. The outer housing 12A may be an outer frame surrounding the interior of the device 10 and, if desired, may form an outer surface of the device 10 (e.g., portions of the outer housing 12A may form one or more housing walls of the device 10, such as housing walls extending around the periphery of the device 10). The inner housing 12B may be disposed within the interior of the device 10 and may be mounted to the outer housing 12A (e.g., the outer housing 12A may surround the lateral periphery of the inner housing 12B in the XZ plane). The strip 12C may be attached to the outer housing 12A at the right side 36 of the device 10 and the left side 34 of the device 10 (e.g., using attachment structures such as joints, hinges, screws, fasteners, snaps, magnets, etc.). The strip 12C may be permanently attached to the outer housing 12A or may be removable. The right side 36 may sometimes be referred to herein as the right edge 36, right side 36, or right wall 36 of the device 10. The left side 34 may extend opposite the right side 36 and may sometimes be referred to herein as the left edge 34, left face 34, or left wall 34 of the device 10. The right side 36 and the left side 34 may extend from the front side 30 of the device 10 to the back side 32.

[0039] The outer housing 12A may be formed of a conductive material such as aluminum, stainless steel or titanium. Therefore, the outer housing 12A may sometimes be referred to herein as a conductive housing 12A, a conductive outer housing 12A, an outer conductive housing 12A, a conductive outer frame 12A, a conductive frame 12A, a conductive housing 12A, a conductive outer housing 12A or an outer housing 12A. If desired, the inner housing 12B may be formed of a conductive material different from the outer housing 12A (e.g., to meet the installation requirements of the inner housing, to meet the protection requirements of the outer housing, to meet the requirements of mechanical strength and integrity, and to minimize the weight of the device). The inner housing 12B may, for example, be formed of a conductive material such as magnesium, aluminum, stainless steel or titanium. The inner housing 12B may therefore sometimes be referred to herein as a conductive housing 12B, a conductive inner housing 12B, an inner conductive housing 12B, a conductive inner frame 12B, a conductive frame 12B, a conductive housing 12B, a conductive inner housing 12B, an inner housing 12B or a conductive support plate 12B.

[0040] Outer housing 12A and inner housing 12B may provide mechanical support and rigidity for device 10. In addition, one or more components within device 10 may be mounted or attached to outer housing 12A and / or inner housing 12B. For example, a substrate such as logic board 38 may be mounted to inner housing 12B. Logic board 38 may, for example, form a main logic board (MLB) for device 10. Other components within device 10 (e.g., Figure 1 10. The back side 32 of the device 10 may also be referred to herein as the back edge 32, the back wall 32, or the back side 32.

[0041] When device 10 is worn on the user's head, the user's head 33 faces the back side 32 of device 10, and the user's eyes are aligned with display 18B, as indicated by arrow 40. Display 18B may include a left display aligned with the user's left eye and a right display aligned with the user's right eye (e.g., the user's left and right eyes may be located within left and right eye boxes of display 18B). The left and right displays may include respective pixel arrays (or a single shared pixel array) and optics (e.g., one or more lenses) for directing images from the pixel arrays to the user's eyes (e.g., as binocularly fusible content).

[0042] The housing structure 12 of the device 10 may also include a housing structure at a front side 30 of the device 10 opposite the back side 32. The front side 30 may also be sometimes referred to herein as a front edge 30, a front wall 30, or a front face 30 of the device 10. The housing structure 12 may include a cover glass assembly (CGA) 28 mounted to the outer housing 12A at the front side 30 of the device 10. The CGA 28 may also be sometimes referred to herein as a lid 28, a front cover 28, or a dielectric cover 28 of the device 10. The CGA 28 may be fully or partially transparent.

[0043] CGA 28 may include multiple layers (sometimes referred to herein as cover layers). For example, CGA 28 may include an outer cover layer of device 10, such as a glass cover layer (sometimes referred to herein as a display cover layer or cover glass). The glass cover layer may form an outer surface of device 10 at front side 30. CGA 28 may also include one or more dielectric layers located behind the glass cover layer and overlapping the glass cover layer (e.g., on the inside of the glass cover layer). The dielectric layer may include one or more polymer layers, plastic layers, glass layers, ceramic layers, and / or other dielectric layers. If desired, some or all of the dielectric layers may be formed into an annular shape extending along the perimeter of CGA 28 and the glass cover layer (e.g., at the peripheral edge portion 42 of CGA 28) in the XZ plane, or may substantially overlap the entirety of the glass cover layer. The dielectric layer located behind the glass cover layer may also sometimes be referred to as a cover layer, a dielectric member, a dielectric cover layer, a shield, a trim, and / or a cover. The peripheral edge portion 42 may also sometimes be referred to herein as a peripheral region 42 or an edge region 42.

[0044] CGA 28 may also include a front-facing display such as display 18A (e.g., a flexible display panel or other display panel formed by an array of pixels based on organic light emitting diodes). CGA 28 may have a central portion or area 44 that overlaps display 18A. Peripheral edge portions 42 of CGA 28 may extend around the lateral perimeter and central area 44 of CGA 28. Display 18A may emit light (e.g., an image) through the central area 44 of the dielectric layer and glass cover layer of CGA 28 (as shown by arrow 46) for viewing by people other than the wearer of device 10. The central area 44 of the glass cover layer and dielectric layer of CGA 28 that overlaps display 18A may be fully transparent or partially transparent to help hide display 18A from view when the display is not emitting light. The peripheral edge area 42 of the glass cover layer and dielectric layer of CGA 28 may be opaque or transparent. Display 18A may sometimes be referred to herein as a front-facing display, a world-facing display, or a publicly visible display.

[0045] If desired, case structures 12 may also include decorative covering members, polymer layers (e.g., fully or partially transparent polymer layers), and / or dielectric case walls laminated to or over outer housing 12A (e.g., at an exterior of device 10). Case structures 12 may also include one or more fabric members, rubber members, ceramic members, dielectric members, curtain members, or other structures at rear side 32 of device 10 that help conform to the user's face when wearing device 10 and / or block external, ambient, or scene light from the user's surroundings from interfering with or washing out light from display 18B that the user is viewing.

[0046] Some or all of the side surfaces of CGA 28 may exhibit a curved cross-sectional profile. Within CGA 28, some or all of one or more side surfaces of the glass cover layer and / or some or all of one or more side surfaces of the dielectric layer in CGA 28 may be characterized as a three-dimensional curved surface (e.g., a spherical curved surface, an aspherical curved surface, a free-form curved surface, etc.). The three-dimensional curved surface may be a compound curved surface (e.g., a surface exhibiting curvature may be a non-developable surface).

[0047] In the area of ​​compound curves, at least some portions of the curves in CGA 28 may be characterized by a radius of curvature R of 4 mm to 250 mm, 8 mm to 200 mm, 10 mm to 150 mm, at least 5 mm, at least 12 mm, at least 16 mm, at least 20 mm, at least 30 mm, less than 200 mm, less than 100 mm, less than 75 mm, less than 55 mm, less than 35 mm, and / or other suitable degrees of curvature. Compound curves may be, for example, three-dimensional curves in which the surface has a non-zero radius of curvature about two or more different axes (e.g., non-parallel axes, intersecting axes, non-intersecting axes, perpendicular axes such as the X-axis and the Z-axis, etc.) and / or two or more different points within or behind device 10. If desired, one or more of the surfaces of the dielectric layers in CGA 28 may be developable surfaces. Display 18A may be a flexible display panel that bends into a curved shape (e.g., to follow the curved shape of a user's curved face, to follow the curved shape of a compound curve of CGA 28, to feature inner and outer developable surfaces, etc.) As examples, the compound curve may be used to provide an attractive decorative appearance to device 10, may help device 10 exhibit a compact and lightweight form factor, may be used to maximize the mechanical strength of device 10, and / or may accommodate simple user interaction with device 10.

[0048] During operation, device 10 may receive image data (e.g., image data for video, still images, etc.) and may present this information on displays 18B and / or 18A. Device 10 may also receive other data, control commands, user input, etc. Device 10 may also provide graphics to accessories and other electronic equipment (e.g., Figure 1 For example, image data from a forward-facing camera may be provided to an associated device, audio output may be provided to a device with a speaker (such as a headphone device), user input and sensor readings may be sent to a remote device, and the like.

[0049] Such communications may be supported using wired communications and / or wireless communications. In the exemplary configuration, wireless circuit 16 ( Figure 1 ) can support device 10 and remote wireless equipment (e.g., Figure 1Wireless communications between device 10 and external equipment 22 (e.g., a cellular phone, a wireless base station, a computer, a headset or other accessory, a remote control, a peer device, an Internet server, and / or other equipment). Wireless communications may be supported using one or more antennas in device 10 and the external equipment that operate at one or more wireless communication frequencies. The antennas may be coupled to wireless transceiver circuitry. The wireless transceiver circuitry may include transmitter circuitry configured to send wireless communication signals using the antennas and receiver circuitry configured to receive wireless communication signals using the antennas.

[0050] Figure 1 The external equipment 22 may include at least a first accessory or peripheral device 22L and a second accessory or peripheral device 22R, such as Figure 2 . Peripheral devices 22R and 22L may be, for example, control input devices (e.g., remote controls, game controllers, etc.) or audio output devices, such as right and left speakers, right and left speakers of headphones worn by a user, etc. In the specific implementation described as an example herein, peripheral device 22R is a right earphone, and peripheral device 22L is a left earphone. Peripheral device 22R may therefore sometimes be referred to herein as right earphone 22R, and peripheral device 22L may sometimes be referred to herein as left earphone 22L.

[0051] When operating device 10, the user wears device 10 on head 33. At the same time, the user wears left earphone 22L on and / or in their left ear (on the left side of head 33) and right earphone 22R on and / or in their right ear (on the right side of head 33). Earphones 22L and 22R may each include a speaker, a battery, one or more processors, and a wireless circuit with one or more antennas. Earphones 22L and 22R may be wireless earphones with batteries, and the batteries are rechargeable, for example, when earphones 22L and 22R are plugged into a power adapter, placed on or in a charging base, or placed in a charging case.

[0052] One or more antennas in device 10 may transmit audio data in radio frequency signal 24A to earphones 22R and 22L. Earphones 22L and 22R may play the audio data through speakers in earphones 22L and 22R. The audio data may include a first audio data stream (e.g., left audio data) for playback by left earphone 22L and a second different audio data stream (e.g., right audio data) for playback by right earphone 22R (e.g., to provide stereo, three-dimensional, spatial and / or surround sound to the user). One or more antennas in device 10 may also transmit other wireless data in radio frequency signal 24W.

[0053] Additionally or alternatively, one or both earphones in earphones 22L and 22R may include one or more sensors that generate sensor data. The sensor may include a microphone, a touch sensor, a force sensor, an orientation sensor (e.g., a gyroscope, an inertial measurement unit, a motion sensor, etc.), an ambient light sensor, a proximity sensor, a magnetic sensor, a temperature sensor, and / or other sensors. The microphone may generate microphone data (e.g., voice data from a user speaking while wearing the earphone). The touch sensor may generate touch sensor data, and the force sensor may generate force sensor data (e.g., indicating user input provided to the device 10 via the earphone, indicating that the earphone is currently located in the user's ear, etc.). The ambient light sensor may generate ambient light sensor data (e.g., indicating the position of the device 10 and / or the lighting conditions around the user). Generally speaking, the sensor may generate any desired sensor data. The earphones 22L and 22R may use radio frequency signals 24A and / or use radio frequency signals 24W to send sensor data to one or more antennas in the device 10.

[0054] If care is not taken, components in device 10 may generate excessive heat. Display 18B may, for example, be a high-resolution display (e.g., a 4K display, an 8K display, or a higher resolution display) that consumes a relatively large amount of power and therefore generates a relatively large amount of heat. Thermal management may be particularly important in device 10 because device 10 is worn on the user's head during operation, and care should be taken to ensure that device 10 does not become too hot or uncomfortable when worn by the user. Device 10 may include one or more fans, such as fan 41, to help dissipate heat loads on display 18B and other components in device 10. For example, fan 41 may be mounted to logic board 38. Device 10 may include a single fan 41 or multiple fans 41 (e.g., respective fans 41 overlapping left and right displays 18B, 18B in device 10).

[0055] The housing of device 10 may include one or more thermal vents that allow fan 41 to circulate air in and out of device 10 (e.g., fan 41 may deliver air through the vents). As used herein, the term "delivering air" refers to the sending (exhaust) and / or receiving (intake) of air. For example, outer housing 12A may include one or more thermal vents 39 aligned with one or more corresponding fans 41. Some vents 39 may be used to draw in cool air (sometimes referred to herein as thermal intake vents), while other vents 39 are used to exhaust hot air (sometimes referred to herein as thermal exhaust vents). Vents 39 are also sometimes referred to herein as thermal ports 49 (e.g., intake ports and exhaust ports).

[0056] Each fan 41 may, for example, have at least one corresponding intake vent 39 and at least one corresponding exhaust vent 39. When driven, the fan blades in the fans 41 rotate, drawing cool air into the device 10 through the intake vents. The cool air absorbs heat from the display 18B and / or other components on the logic board 38 or elsewhere in the device 10. The rotating fan blades of the fans 41 push the heated air out of the device 10 through the exhaust vents.

[0057] If desired, the intake vents and exhaust vents can be located on opposite sides of the device 10. This can help prevent warm air exhausted through the exhaust vents from being drawn back into the intake vents instead of cooler air. Providing intake vents along the bottom or cheek side of the device 10 and exhaust vents along the top or brow side of the device 10 can, for example, help prevent warm air output by the exhaust vents from rising toward the intake vents.

[0058] Figure 3 is a diagram of illustrative components in wireless circuitry 16 of device 10. Figure 3 As shown, wireless circuitry 16 may include one or more transceivers (e.g., transceiver circuitry), such as transceiver (TX / RX) 66. Transceiver 66 may process radio frequency signals 24 (e.g., radio frequency signals) within a corresponding frequency band of radio frequencies (sometimes referred to herein as a communication frequency band or simply a frequency band). Figure 2 Sending and / or receiving RF signals 24A or 24W).

[0059] The frequency bands handled by transceiver 66 may include wireless personal area network (WPAN) bands such as 2.4 GHz frequency bands, or other WPAN communication bands), cellular telephone communication bands (such as cellular low band (600 MHz-960 MHz), cellular low-mid band (1400 MHz-1550 MHz), cellular mid band (1700 MHz-2200 MHz), cellular high band (2300 MHz-2700 MHz), cellular ultra-high band (3300 MHz-5000 MHz), or other cellular communication bands between about 600 MHz and about 5000 MHz), 3G bands, 4G LTE bands, 3GPP 5G New Radio (NR) Frequency Range 1 (FR1) bands below 10 GHz, 3GPP 5G NR Frequency Range 2 (FR2) bands between 20 GHz and 60 GHz, other centimeter or millimeter wave bands between 10 GHz-300 GHz, sub-THz or THz bands between about 100 GHz-1000 GHz (e.g., 6G bands), wireless local area network (WLAN) bands (e.g., (IEEE 802.11) or other WLAN communication bands) such as the 2.4 GHz WLAN band (e.g., from 2400 MHz to 2480 MHz), the 5 GHz WLAN band (e.g., from 5180 MHz to 5825 MHz), 6E band (e.g., from 5925 MHz to 7125 MHz) and / or other The transceiver 66 may be a frequency band (e.g., from 1875 MHz to 5160 MHz), a near field communication frequency band (e.g., at 13.56 MHz), a satellite navigation frequency band (e.g., a global positioning system (GPS) frequency band, a global navigation satellite system (GLONASS) frequency band, and a BeiDou navigation satellite system (BDS) frequency band), an ultra-wideband (UWB) frequency band operating under the IEEE 802.15.4 protocol and / or other ultra-wideband communication protocols (e.g., a first UWB communication frequency band at 6.5 GHz and / or a second UWB communication frequency band at 8.0 GHz), a communication frequency band under the 3GPP wireless communication standard family, a communication frequency band under the IEEE 802.XX standard family, a satellite communication frequency band, an unlicensed frequency band (e.g., an unlicensed frequency band at 2.4 GHz and / or an unlicensed frequency band between 5 GHz and 6 GHz), an emergency and / or public service frequency band, and / or any other desired frequency band of interest. If desired, the transceiver 66 may also be used to perform space ranging operations (e.g., using a radar sensing scheme).

[0060] like Figure 3 As shown, wireless circuitry 16 may also include one or more antennas 50. Transceiver 66 may use one or more antennas 50 to convey (e.g., transmit and / or receive) radio frequency signals 24. Each antenna 50 may include one or more antenna conductors formed of a conductive material such as a metal. The antenna conductors may include one or more antenna conductors forming an antenna resonating element 52 (sometimes referred to as an antenna resonator, an antenna radiator, or an antenna radiating element) and one or more antenna conductors forming an antenna ground 54 (sometimes referred to as a ground plane).

[0061] Antenna 50 may have an antenna feed coupled between antenna resonating element 52 and antenna ground 54. Antenna feed may have first (positive or signal) antenna feed terminal 56 coupled to antenna resonating element 52. Antenna feed may also have second (ground or negative) antenna feed terminal 58 coupled to antenna ground 54. Antenna resonating element 52 may be separated from antenna ground 54 by a dielectric (non-conductive) gap. Antenna resonating element 52 and antenna ground 54 may be formed from separate pieces of metal or other conductive material or, if desired, may be formed from separate portions of the same unitary piece of metal. If desired, antenna 50 may include additional antenna conductors (e.g., parasitic elements) that are not coupled to antenna feed terminals 56 and 58. For some types of antennas (e.g., in implementations where antenna 50 is a slot antenna), the antenna resonating element may be formed from a slot in a single antenna conductor that is coupled to both antenna feed terminals 56 and 58 (e.g., where antenna feed terminals 56 and 58 are coupled to opposite sides of the slot).

[0062] Each antenna feed in the wireless circuit 16 and therefore each antenna 50 can be coupled to one or more transceivers 66 in the wireless circuit 16 through a corresponding RF transmission line 60. The RF transmission line 60 may include a signal conductor such as a signal conductor 62 (e.g., a positive signal conductor) and a ground conductor such as a ground conductor 64. The ground conductor 64 may be coupled to the antenna feed terminal 58 of the antenna 50. The signal conductor 62 may be coupled to the antenna feed terminal 56 of the antenna 50. The RF transmission line 60 may include one or more of a stripline, a microstrip, a coaxial cable, a coaxial probe, an edge-coupled microstrip, an edge-coupled stripline, a waveguide, an RF connector, a combination of these, etc. The RF transmission line 60 may also be sometimes referred to as an RF transmission line path in this article. If desired, filtering circuits, tuning components, switching circuits, impedance matching circuits, phase shifter circuits, amplifier circuits, and / or other circuits may be provided on the RF transmission line 60 and / or may be coupled between two or more antenna conductors in the antenna 50.

[0063] As used herein, the term “delivering RF signals” means the transmission and / or reception of RF signals (e.g., for performing unidirectional and / or bidirectional wireless communications with external wireless communication equipment). During transmission of RF signals 24, transceiver 66 transmits RF signals 24 (e.g., as modulated with wireless data such as audio data, control data, etc.) via RF transmit line 60. The RF signals may excite antenna currents to flow around the edges of antenna resonating element 52 and antenna ground 54 (via antenna feed terminals 56 and 58). The antenna currents may radiate RF signals 24 into free space (e.g., based at least on the resonance established by the radiating lengths of antenna resonating element 52 and / or antenna ground 54).

[0064] During reception of RF signals 24 (e.g., as modulated by external equipment with wireless data such as voice data, sensor data, image data, etc.), incident RF signals 24 may excite antenna currents to flow around the edges of antenna resonating element 52 and antenna ground 54. The antenna currents may transmit RF signals 24 to transceiver 66 via RF transmit lines 60. Transceiver 66 may down-convert the RF signals to baseband and may demodulate the wireless data from these signals (e.g., using baseband circuitry such as one or more baseband processors).

[0065] Any suitable antenna structures may be used to form antenna 50. For example, antenna 50 may include antennas having antenna resonating elements formed from patch antenna structures (e.g., shorted patch antenna structures), slot antenna structures, loop antenna structures, stacked patch antenna structures, antenna structures with parasitic elements, inverted-F antenna structures, planar inverted-F antenna structures, helical antenna structures, monopole antenna structures, dipole antenna structures, Yagi (Yagi-Uda) antenna structures, surface integrated waveguide structures, hybrids of two or more of these designs, and the like. If desired, one or more antennas 50 may be cavity-backed antennas. Antenna 50 may include one or more antenna conductors that form parasitic antenna resonating elements. Antenna resonating elements 52 are directly fed (e.g., via positive antenna feed terminal 56), while parasitic antenna resonating elements are not directly fed (e.g., indirectly fed by antenna resonating element 52) ​​and / or are used to modify the radiation pattern and / or radiation characteristics of antenna 50. If desired, two or more antennas 50 may be arranged in a phased antenna array (e.g., for delivering centimeter and / or millimeter wave signals in a signal beam formed in a desired beam pointing direction that can be steered / adjusted over time). Earphones 22R and 22L may also have wireless circuitry such as Figure 3 The wireless circuit 16.

[0066] Device 10 may include earphones 22R and 22L ( Figure 2 ) transmits a first set of one or more antennas to the external equipment 22 for transmitting radio frequency signals 24A. The device 10 may also include a second set of one or more antennas to transmit radio frequency signals 24W to other external equipment 22. Figure 2As shown, RF signals 24A may be transmitted, for example, through or toward rear side 32 of device 10 (e.g., to reach and leave the expected locations of earphones 22L and 22R when a user wears device 10). RF signals 24W may be transmitted through front side 30 of device 10, through rear side 32, and / or through other sides of device 10. RF signals 24A may be transmitted using a first radio access technology (RAT), a first communication protocol, a first transceiver in device 10, and / or a first set of frequencies or frequency bands. RF signals 24W may be transmitted using a second RAT different from the first RAT, a second communication protocol different from the first communication protocol, a second transceiver in device 10 different from the first transceiver, and / or a second set of frequencies or frequency bands different from the first set of frequencies or frequency bands.

[0067] Figure 4 2 is a diagram showing how wireless circuit 16 may include various components for delivering radio frequency signals 24A and 24W. Figure 4 As shown, the wireless circuit 16 may use at least one antenna 50A to transmit the RF signal 24A, and may use at least two antennas 50W (eg, at least a first antenna 50W-1 and a second antenna 50W-2) to transmit the RF signal 24W. Figure 2 Although RF signal 24A may generally convey any desired wireless data between device 10 and a plurality of peripheral devices, a specific implementation in which RF signal 24A conveys audio data and sensor data between device 10 and earphones 22L and 22R is described herein as an example.

[0068] Antennas 50W-1 and 50W-2 may be coupled to first transceiver 66W via corresponding RF transmission lines. Antenna 50A may be coupled to second transceiver 66A via corresponding RF transmission lines. Transceivers 66W and 66A may be formed using different corresponding radio components, modems, chips, integrated circuits, integrated circuit (IC) packages, and / or modules. Transceiver 66W may use antennas 50W-1 and 50W-2 to communicate with external equipment other than earphones 22R and 22L and / or to communicate with earphones 22R and 22L to transmit RF signals 24W ( Figure 2 ). The transceiver 66W may, for example, have respective first and second transmit chains and respective first and second receive chains (eg, respective first and second ports) coupled to the antennas 50W-1 and 50W-2.

[0069] The transceiver 66W can use at least a first communication protocol, at least a first RAT, and a first set of frequency bands to convey the radio frequency signal 24W. A specific implementation in which the radio frequency signal 24W includes a WLAN signal conveyed using a WLAN protocol (e.g., a Wi-Fi protocol), a WLAN RAT, and a WLAN frequency band is described as an example herein. If desired, the radio frequency signal 24W may also include a Bluetooth signal conveyed using a Bluetooth protocol and a Bluetooth frequency band. Therefore, the transceiver 66W may sometimes be referred to herein as a WLAN transceiver 66W, a Wi-Fi transceiver 66W, or a WLAN / Bluetooth transceiver 66W. The radio frequency signal 24W may sometimes be referred to herein as a WLAN or Wi-Fi signal 24W. This is merely exemplary, and in general, any desired protocol may be used to convey the radio frequency signal 24W.

[0070] In some cases, Bluetooth signals transmitted by transceiver 66W are used to transmit audio data streams between device 10 and earphones 22L and 22R. However, Bluetooth signaling may involve excessive latency and excessive short-term pulse interference rates. This may disrupt the user experience when listening to audio on earphones 22L and 22R, especially for audio data with relatively high data rates (e.g., for audio with a relatively high data rate). Figure 2 The high latency and excessive glitch rates associated with Bluetooth signaling may be caused by, for example, the Bluetooth protocol's requirement for time division duplexing between earphones 22L and 22R (e.g., where audio data packets are sent to the right earphone 22R and then to the left earphone 22L in a time-alternating manner), frequency hopping between different Bluetooth frequencies, and a relatively large tolerance for packet retransmissions.

[0071] To alleviate these issues, transceiver 66A may transmit radio frequency signals 24A using a second communication protocol, a second RAT, and a second set of frequency bands that are different from those used by transceiver 66W. Figure 2 ). For example, transceiver 66A may transmit RF signal 24A using a non-Bluetooth Ultra Low Latency Audio (ULLA) communication protocol optimized to support low latency and high data rate audio streaming from device 10 to earphones 22L and 22R. RF signal 24A may be transmitted in a frequency band different from RF signal 24W. For example, RF signal 24A may be transmitted using an unlicensed frequency band at 2.4 GHz and / or an unlicensed frequency band between 5 GHz-6 GHz. The frequency band between 5 GHz-6 GHz may allow for a larger bandwidth than the 2.4 GHz frequency band. In addition, the frequency band between 5 GHz-6 GHz may allow for fewer coexistence / interference issues than the 2.4 GHz frequency band (which coexists with the Bluetooth frequency band, household appliances such as microwave ovens that transmit about 2.4 GHz, and the like).

[0072] The ultra-low-latency audio protocol may involve communication without performing time division duplexing between earphones 22L and 22R, and may involve communication with a lower packet retransmission count limit, lower latency, lower short-time pulse interference rate (e.g., 1 short-time pulse interference per hour or less), higher stability, and less interference than the Bluetooth protocol. In addition, the ultra-low-latency audio protocol requires both earphones 22R and 22L to directly transmit radio frequency signals 24A to the device 10, rather than relaying signals or data between earphones 22R and 2L, and has a wireless fading channel selected to have a tighter distribution and shorter tailing than the Bluetooth protocol at the low power end. Therefore, transceiver 66A may sometimes be referred to as audio transceiver 66A in this article. Radio frequency signal 24A may sometimes be referred to as audio signal 24A in this article. The example in which transceiver 66A transmits audio data is only illustrative, and in general, transceiver 66A can use radio frequency signal 24A to transmit any desired wireless data.

[0073] During transmission, the transceiver 66A may transmit the audio data AUD in the radio frequency signal 24A (e.g., the radio frequency signal 24A may be modulated to carry the audio data AUD). The antenna 50A may transmit the radio frequency signal 24A including the audio data AUD. The audio data AUD may include audio data stream packets. The audio data stream packets may include a first group of audio data packets (or any desired first part of the audio data stream distributed across one or more packets) for playback by the left earphone 22L (e.g., the left speaker audio data stream). The audio data stream packets may also include a second group of audio data packets (or any desired second part of the audio data stream distributed across one or more packets) for playback by the right earphone 22R (e.g., the right speaker audio data stream). For example, the first group and the second group may alternate or interleave in time.

[0074] Since the ultra-low latency audio communication protocol that manages the transmission of the radio frequency signal 24A does not involve time division duplex (TDD) between the earphones 22R and 22L, the same audio data AUD (e.g., audio data stream packets including both left speaker audio data and right speaker audio data) is concurrently (e.g., simultaneously) transmitted to both earphones 22R and 22L and received concurrently by both earphones 22R and 22L. The controllers on the earphones 22R and 22L can demodulate the received audio data to recover the first and second groups of audio data packets. The left earphone 22L can then play the first group of audio data packets without playing (e.g., simultaneously discarding) the received second group of audio data packets. The right earphone 22R can play the second group of audio data packets without playing (e.g., simultaneously discarding) the received first group of audio data packets. The earphones 22L and 22R can also send the radio frequency signal 24A to the antenna 50A on the device 10 to determine / confirm the reception of the audio data AUD, convey voice / sensor data to the device 10, etc. Because sensor data collected by earphones 22R and 22L may not be subject to the same stringent latency requirements as audio data conveyed by transceiver 66A, earphones 22L and 22R may, if desired, include additional wireless circuitry for transmitting some or all of the sensor data to device 10 using the Bluetooth protocol or other protocol.

[0075] In some cases, using the same antenna 50A to communicate RF signals 24A with both earphones 22R and 22L may result in excessive glitch rates due to random transmission of no signals and fading channels between antenna 50A and the earphones. To improve link quality and glitch rates, if desired, wireless circuitry 16 may include different respective antennas 50A for communicating RF signals 24A with earphones 22R and 22L.

[0076] Placing antenna 50 at a location on device 10 that allows the antenna to exhibit a satisfactory level of radio frequency performance may be challenging given the compact and lightweight form factor of device 10 and the presence of conductive structures in device 10, such as outer housing 12A, inner housing 12B, logic board 38, display 18B, and conductive portions of display 18A. To help maximize the wireless performance of antenna 50 without increasing the size or weight of device 10, one or more of antennas 50 in device 10 may be slot antennas having a slot antenna resonating element formed by outer housing 12A.

[0077] Figure 5 An exemplary slot antenna structure that can be used to form antenna 50 is shown in FIG. Figure 5 As shown, antenna 50 may be a slot antenna having a slot antenna resonating element formed by slots 70 in antenna ground portion 54. Antenna ground portion 54 may include outer housing 12A ( Figure 2) and, if desired, other ground structures within device 10. Slot 70 may also sometimes be referred to herein as slot element 70, slot antenna resonating element 70, slot antenna radiating element 70, radiating slot 70, or resonant slot 70.

[0078] exist Figure 5 In the configuration of , the slot 70 is a closed slot because the antenna ground portion 54 (e.g., Figure 2 The outer housing 12A of the embodiment of the present invention completely surrounds and encloses the slot 70. The slot 70 can have an elongated length 76 (e.g., from end 72 to end 74) and an orthogonal width 78 that is less than the length 76. The antenna feed of the antenna 50 can be coupled across the slot 70. For example, the positive antenna feed terminal 56 and the ground antenna feed terminal 58 can be coupled to the antenna ground 54 at opposite edges of the slot 70.

[0079] In general, the frequency response of an antenna is related to the size and shape of the conductive structures in the antenna. When the perimeter of slot 70 is approximately equal to the operating wavelength of antenna 50 (e.g., where the perimeter is equal to twice the length 76 plus twice the width 78), Figure 5 Slot antennas of the type shown in tend to exhibit response peaks. Antenna current can flow around the perimeter of slot 70 between antenna feed terminals 56 and 58. For example, where length 76 >> width 78, the length of antenna 50 will tend to be approximately half the length of other types of antennas (such as inverted-F antennas configured to process signals at the same frequency). For example, given equal antenna volumes, the slot antenna will therefore be able to process signals at approximately twice the frequency of other antennas (such as inverted-F antennas). In addition, implementing antenna 50 as a slot antenna can eliminate the need to ground other metal around antenna 50, thereby allowing antenna 50 to be integrated into outer housing 12A ( Figure 2 ) without the need for an additional grounding structure, which may take up excessive space in device 10.

[0080] Figure 5 The examples are merely illustrative. In general, slot 70 may have any desired shape. For example, slot 70 may have a zigzag shape, where different segments extend in different directions, the slot may have straight and / or curved edges, etc. If desired, slot 70 may be an open slot (e.g., antenna 50 may be an open slot antenna). Figure 6 is a diagram showing one example of how the slot 70 can be an open slot. Figure 6 As shown, the slot 70 has an open end opposite the end 72 (eg, the slot 70 is not surrounded by the antenna ground portion 54 or extends through the antenna ground portion 70 on one side).

[0081] The slot 70 in the antenna 50 may be formed by the outer housing 12A ( Figure 2) is formed by any desired opening in the housing. As an example, the slot 70 may be formed by the vent hole 39 ( Figure 2 )form. Figure 7 is a rear perspective view showing how slots 70 may be formed by vent holes 39 in housing 12A. Figure 7 In the example, for clarity, the Figure 2 10 and a rear housing or cover of device 10 and display 18B.

[0082] like Figure 7 As shown, fan 41 may be disposed within device 10 and aligned with corresponding ventilation holes 39 in outer housing 12A. CGA 28 may be mounted to outer housing 12A (e.g., at the front of device 10). Fan 41 may include a fan cavity defined by a corresponding fan housing (sometimes also referred to as a fan bracket). Fan 41 may be mounted to logic board 38 or to another structure in device 10. Fan 41 may include fan blades and one or more channels (sometimes also referred to as ventilation channels, ventilation shafts, shafts, or (elongated) sections / portions of fan chambers or fan housings) disposed within the fan cavity. One of the channels may extend from the fan blades to ventilation holes 39 in outer housing 12A.

[0083] Controller 20( Figure 1 ) can provide an electrical signal that drives the fan blades in the fan 41. The electrical signal can be adjusted to adjust the rotation speed of the fan blades. The vents 39 can be an intake vent or an exhaust vent. When the fan blades rotate about the axis, the fan blades draw air into the fan cavity through the vents 39, or push air out of the fan cavity through the vents 39, as shown by arrows 80.

[0084] In implementations, it may be desirable to make fan 41 as large as possible to maximize cooling efficiency. However, if care is not taken, the presence of metal in fan 41 may limit the size of and / or may electromagnetically shield one or more antennas in device 10. To mitigate these issues, vents 39 may be formed to correspond to slot 70 (e.g., a slot antenna resonating element) of a slot antenna such as antenna 50.

[0085] like Figure 7 As shown, the antenna 50 may include antenna feed terminals 58 and 56 that are coupled to the inner surface of the outer housing 12A on the opposite side / edge of the vent hole 39 (slot 70). In this way, the outer housing 12A may form the antenna ground portion 54 ( Figure 5 and Figure 6). Antenna feed terminals 58 and 56 can deliver antenna current around the perimeter of vent 39 (slot 70) to deliver RF signals to and / or from free space. Antenna 50 can use slot 70 to deliver RF signals, while slot 70 (vent 39) concurrently delivers air to or from fan 41.

[0086] If desired, outer housing 12A may exhibit a curved surface (e.g., a three-dimensional curved surface) at or overlapping slot 70. For example, a portion of outer housing 12A having vents 39 and, therefore, slots 70 may be located in a three-dimensional curved surface (e.g., a surface that curves around multiple axes, such as axes 82 and 84, which may be orthogonal or non-parallel). For example, curving slot 70 in this manner may help to expand the radiation pattern, thereby expanding the coverage of antenna 50. Alternatively, slot 70 may be planar (e.g., located in a plane). By integrating antenna 50 into vents 39 in this manner, antenna 50 may be disposed on the exterior of device 10, at a location where the antenna is not blocked by fan 41 or other conductive components in device 10, and antenna 50 may be integrated into device 10 without requiring additional space or volume to mount an antenna resonating element.

[0087] Figure 7 The examples are merely illustrative. If desired, one or more (e.g., all) of the vents 39 in the outer housing 12A may be used to form a different slot 70 in the corresponding antenna 50. The slot 70 may have other shapes. If desired, the slot 70 may be an open slot with an open end extending to or opposite the CGA 28 (e.g., as shown in FIG. 1 ). Figure 6 shown).

[0088] Antenna feed terminals 56 and 58 may be coupled to respective conductive interconnect structures 86. Conductive interconnect structures 86 may form part of a radio frequency transmission line of antenna 50 and may couple antenna feed terminals 56 and 58 to transceiver circuitry in device 10. Conductive interconnect structures 86 may, for example, couple antenna feed terminals 56 and 58 to conductive traces on logic board 38. The conductive traces may be coupled to transceiver circuitry of antenna 50 (e.g., on logic board 38 or another printed circuit board in device 10). Conductive interconnect structures 86 may include one or more conductive springs, conductive brackets, conductive clamps, conductive springs, welds, solder, conductive adhesives, conductive foams, conductive fingers, conductive screws, conductive wires, conductive washers, conductive traces (e.g., on a flexible printed circuit), and / or other conductive structures.

[0089] Figure 8 is a cross-sectional side view (eg, along the Figure 7 AA'). Figure 8 As shown, the fan 41 (e.g., the channel in the fan housing of the fan 41) can overlap and extend to the vents 39 (slots 70) in the outer housing 12A. As shown by arrows 80, the fan 41 can deliver air into or out of the interior of the device 10 through the vents 39.

[0090] If desired, the device 10 may include a breathable protective cover, such as a cover 88 disposed within the vent 39 (slot 70). The cover 88 may be formed, for example, of a fabric, mesh, plastic, rubber, or other material having openings that allow air to pass through the vent 39 but otherwise minimize or prevent the intrusion of moisture, dust, and / or other contaminants into the interior of the device 10.

[0091] like Figure 8 As shown, the conductive interconnect structure 86 may include a conductive spring that couples the positive antenna feed terminal 56 on the outer housing 12A (e.g., at or near the edge of the slot 70) to the logic board 38 (e.g., to conductive signal traces on the logic board 38 that form part of the signal conductor of the RF transmission line of the antenna 50). For example, the conductive spring can be formed by a bent or folded elongated metal member, such as a sheet metal member. The conductive spring can, for example, allow the slot 70 to be fed at the positive antenna feed terminal 56 while allowing the logic board 38 to be offset a distance 90 from the fan 41 (e.g., to accommodate a large size fan 41). In a specific implementation in which the fan 41 is mounted to the logic board 38, the distance 90 can be relatively small or equal to zero. This example is merely illustrative, and in general, the conductive interconnect structure 86 can include any desired conductive interconnect structure.

[0092] Fig. 9 is a top view of the ventilation hole 39 (slot 70) (e.g., along Figure 8 (viewed in the direction of arrow 91). Fig. 9 As shown, the vent 39 can be filled with a cover 88. The cover 88 may include a set of holes or openings 92 that allow air driven by the fan 41 to enter or leave the device 10 through the vent 39. The openings 92 may have any size and / or shape (e.g., large enough to allow air to pass but small enough to prevent dust or other contaminants from intruding). The cover 88 may include any desired number of openings 92. The cover 88 may be formed of a dielectric material (e.g., plastic, rubber, silicone, ceramic, etc.) that does not short-circuit or interrupt the antenna current flowing around the perimeter of the slot 70 between the antenna feed terminals 56 and 58. The dielectric constant of the cover 88 is greater than the dielectric constant of air. For example, relative to a specific implementation in which the slot 70 is filled with air, this can allow the size of the slot 70 to be reduced while still allowing the antenna 50 to transmit radio frequency signals at the same frequency.

[0093] Figures 7 to 9 The example in which the antenna resonating element of antenna 50 includes only a single slot 70 (vent 39) in outer housing 12A is merely illustrative. If desired, the antenna resonating element of antenna 50 may include multiple vents 39 (slots 70) in outer housing 12A. Fig.10 is a perspective view showing one example of how the antenna resonating element of antenna 50 may include a plurality of vents 39 (slots 70) in outer housing 12A.

[0094] like Fig.10 As shown, the outer housing 12A may include a fan 41 ( Figure 7 ) may include a plurality of overlapping vent holes 39, such as at least first vent hole 39A and second vent hole 39B. Vent hole 39A may form a first slot antenna resonating element 70-1 of antenna 50. Vent hole 39B may form a second slot antenna resonating element 70-2 of antenna 50.

[0095] Vent 39A may be a directly fed slot antenna resonating element of antenna 50. Thus, positive antenna feed terminal 56 may be coupled to an edge of vent 39A. Antenna currents delivered around the perimeter of vent 39A may generate (e.g., via near-field electromagnetic coupling 94) corresponding antenna currents flowing around vent 39B. Thus, vent 39B may form an indirectly fed slot antenna resonating element of antenna 50 (e.g., where directly fed vent 39A feeds indirectly fed vent 39B). Implementing antenna 50 using two slot antenna resonating elements 70-1 and 70-2 may allow each slot antenna resonating element to have a narrower width (e.g., 2 mm-5 mm) than in an implementation in which antenna 50 and fan 41 include only a single vent 39. To allow the same amount of airflow, the total area of ​​vents 39A and 39B may be smaller than that of vents 39A and 39B. Figures 7 to 9 The areas of the ventilation holes 39 are the same.

[0096] Fig.10 The examples are illustrative only. Slot antenna resonating elements 70-1 and 70-2 may at least partially overlap (e.g., when viewed in the +Y direction) and / or may at least partially non-overlap. Slot antenna resonating elements 70-1 and 70-2 may have the same shape and / or size, or may have different shapes and / or sizes. Providing slot antenna resonating elements 70-1 and 70-2 with different sizes (perimeter) may configure each slot antenna resonating element to contribute a different frequency to the overall frequency response of antenna 50 (e.g., to widen the bandwidth of antenna 50).

[0097] In general, antenna 50 may include any desired number of antenna resonating elements formed by any desired number of at least partially overlapping vents 39 in outer housing 12A. Fig.11 An example is shown in which antenna 50 includes a slot antenna resonating element formed by four overlapping vents 39 in outer housing 12A. One or more of the vents may be directly fed (e.g., through positive antenna feed terminal 56) while the remaining vents are indirectly fed. To allow the same amount of airflow, vents 39 ( Fig.11 The sum of the areas of each ventilation hole in Figures 7 to 9 The areas of the ventilation holes 39 are the same.

[0098] Figures 7 to 11 The example of the embodiment in which the slot 70 of the antenna 50 is formed by the vent hole 39 in the outer housing 12A is merely illustrative. In general, the slot 70 of the antenna 50 can be formed by any desired slot, notch, gap or opening in the outer housing 12A. For another example, the slot 70 can be formed by a sensor window in the outer housing 12A. Fig.12 is a perspective front view showing one example of how slot 70 may be formed by a sensor window in outer housing 12A.

[0099] like Fig.12 As shown, outer housing 12A may include a sensor window, such as sensor window 100. Fig.12 In the example of , the sensor window 100 is disposed on the right side of the outer housing 12A. In general, the sensor window 100 may be disposed at any desired location along the outer housing 12A. The sensor window 100 may be formed by a slot or opening in the outer housing 12A. The slot may be filled with a dielectric material (e.g., a dielectric cover or sensor window). The dielectric material may be plastic, glass, sapphire, ceramic, or other dielectric. If desired, the sensor window 100 may be located in a three-dimensional curved surface (e.g., as given by the curved surface of the corresponding portion of the outer housing 12A).

[0100] The device 10 may include one or more sensors 102 that overlap and / or align with the sensor window 100. Each sensor 102 may have a corresponding field of view 104. Each sensor 102 may collect sensor data from within its field of view 104. One or more of the sensors 102 may be, for example, optical or light-based sensors, such as image sensors (e.g., cameras), light detection and ranging (lidar) sensors, or ambient light sensors. The light-based sensor may receive light from within its field of view 104 through the sensor window 100 (e.g., the sensor 102 may capture an image or image sensor data through the sensor window 100, may collect lidar data through the sensor window 100, may collect ambient light levels through the sensor window 100, etc.). The light-based sensor generates sensor data in response to the received light. Additionally or alternatively, the light-based sensor may send light within its field of view 104 through the sensor window 100 (e.g., the sensor 102 may include one or more optical emitters and / or one or more optical sensors). If desired, some of the light received through sensor window 100 may include a reflected version of the transmitted light (e.g., light that has been reflected from one or more external objects). The transmitted light may include infrared light and / or visible light (e.g., for ranging, lidar sensing, facial mapping, facial recognition, orientation sensing, gesture sensing, etc.). Sensor window 100 may be substantially transparent to the light transmitted by sensor 102.

[0101] Additionally or alternatively, one or more of the sensors 102 may be radio frequency (RF) sensors, such as radar sensors or voltage standing wave ratio (VSWR) sensors. The RF sensor may transmit RF signals (e.g., radar signals) within its field of view 104 through the sensor window 100 and / or may receive RF signals (e.g., reflected radar signals) within its field of view 104 through the sensor window 100. Additionally or alternatively, one or more of the sensors 102 may be thermal sensors that measure heat within the field of view 104 through the sensor window 100.

[0102] Device 10 may perform any desired operations based on the sensor data collected by sensors 102. For example, a controller on device 10 may detect corresponding user input or gestures based on the sensor data, may adjust one or more displays in device 10 based on the sensor data, may detect the orientation of device 10 based on the sensor data, may detect the presence, location, and / or orientation of one or more other objects, devices, users, people, or animals based on the sensor data, may map the environment or surroundings of device 10, may record spatial audio based on the sensor data, may record voice data based on the sensor data, may identify surrounding conditions based on the sensor data, and so on.

[0103] Each sensor 102 may be provided with a different corresponding sensor window 100, or, if desired, a single sensor window 100 may overlap two or more sensors 102. The curvature of the outer housing 12A and sensor window 70 may allow multiple sensors 102 to be provided in different orientations to maximize the cumulative field of view across the sensors (e.g., given by the combination of each field of view 104).

[0104] like Fig.12 As shown, sensor window 100 may form a slot antenna resonating element (e.g., slot 70) of antenna 50. As such, positive antenna feed terminal 52 of antenna 50 may be coupled to an edge of sensor window 100 (slot 70). Positive antenna feed terminal 52 may deliver antenna current around sensor window 100. Sensor window 100 may deliver a corresponding radio frequency signal for antenna 50 (e.g., as a slot antenna resonating element).

[0105] If desired, sensor window 100 may have a uniform width along its length, or may have different widths at different locations along its length. Fig.13 is a diagram showing one example of how the sensor window 100 may have different widths at different locations along its length. Fig.13 As shown, the sensor window 100 may include an elongated (narrow) portion (segment) 112 having a width 78-2. The sensor window 100 may have an enlarged portion (segment) 110 at either end of the elongated portion 112. Each enlarged portion 110 may have a width 78-1 greater than the width 78-2. The enlarged portion 110 may be circular, rectangular, or other shapes. Each enlarged portion 110 may overlap with a corresponding sensor 102. The enlarged portion 110 is sometimes also referred to herein as an enlarged end 110 or simply as an end 100 of the sensor window 100.

[0106] Antenna feed terminals 56 and 58 of antenna 50 may be coupled across elongated portion 112 of sensor window 100. Alternatively, antenna feed terminals may be coupled across enlarged portion 110. Narrowing sensor window 100 between enlarged portions 110 in this manner may help hide sensor window 100 from view and / or may help maximize the amount of conductive material in outer housing 12A between sensors 102, which serves to maximize the mechanical strength of outer housing 12A. At the same time, the overall perimeter of sensor window 100 may be selected to configure antenna 50 to deliver radio frequency signals in a corresponding frequency band.

[0107] Fig.14 is a perspective view of outer housing 12A illustrating additional slots in outer housing 12A that may be used to form slot antenna resonating elements (slots 70) for one or more antennas 50. Fig.14As shown, the outer housing 12A may include a card receiving port 120. The card receiving port 120 may receive a card 134 (e.g., a user identification module (SIM) card, a data or memory card such as an SD card or a micro SD card, etc.). If desired, the card receiving port 120 may form a slot 70 corresponding to the antenna 50. The card receiving port 120 may also sometimes be referred to as a memory card port, a data card port, or a SIM card port.

[0108] Additionally or alternatively, outer housing 12A may include a power receiving port 122 (sometimes also referred to herein as a charging port 122 or power port 122). Power receiving port 122 may receive a power cable 132 (e.g., a charging cable, a cable carrying both power and data lines, a universal serial bus (USB) cable, a power adapter, etc.). Power cable 132 may provide power and / or data to device 10 when inserted into power receiving port 122. If desired, power receiving port 122 may form a slot 70 corresponding to antenna 50.

[0109] Additionally or alternatively, outer housing 12A may include an acoustic port 124. Acoustic port 124 may transmit sound (acoustic signal) 130 into the environment and / or may receive / sense sound 128 (acoustic signal) from the environment. For example, acoustic port 124 may be a speaker port for a speaker in device 10, a microphone port for a microphone or sound sensor in device 10, an ultrasonic port for an ultrasonic transmitter and / or receiver in device 10, an air pressure port, etc. If desired, acoustic port 124 may form slot 70 corresponding to antenna 50.

[0110] Additionally or alternatively, outer housing 12A may include button opening 126. Device 10 may include a dielectric button member (e.g., a volume button, a power button, a display adjustment button, a button to adjust device 10 between virtual, mixed and / or augmented reality display modes, etc.) and / or a touch sensor surface within button opening 126. A user may press the dielectric button member to provide a corresponding user input to device 10 (e.g., through button opening 126). If desired, button opening 126 may form a slot 70 corresponding to antenna 50.

[0111] In general, slot 70 in antenna 50 may be formed by any desired opening in outer housing 12A. Outer housing 12A may include different types of openings (e.g., at or along different sides of device 10) that form slot 70 for multiple different antennas 50. Slot 70 may have any desired shape and may be a closed slot (e.g., such as a Figure 5 and Figures 7 to 14 ) or an open slot (e.g. Figure 6Slots 70 need not be formed in outer housing 12A, and generally speaking, any of slots 70 described herein may be formed in any desired conductive structure in device 10, such as other conductive portions of the housing of device 10, conductive structures in CGA 28, etc.

[0112] As used herein, the term "simultaneous" refers to overlapping at least partially in time. In other words, if at least some of the first event occurs simultaneously with at least some of the second event (e.g., if at least some of the first event occurs during at least some of the second event, occurs at the same time as at least some of the second event, or occurs when at least some of the second event occurs), the first event and the second event are referred to as "simultaneous" with each other in this article. If the first event and the second event are synchronized (e.g., if the entire duration of the first event overlaps with the entire duration of the second event in time), the first event and the second event can be simultaneous, but if the first event and the second event are asynchronous (e.g., if the first event starts before or after the second event starts, if the first event ends before or after the second event ends, or if the first event and the second event do not partially overlap in time), the first event and the second event can also be simultaneous. As used herein, the term "while" is synonymous with "concurrent".

[0113] Devices such as device 10 may collect and / or use personally identifiable information. As is well known, use of personally identifiable information should be subject to privacy policies and practices that are generally recognized to meet or exceed industry or government requirements for maintaining user privacy. Specifically, personally identifiable information data should be managed and processed to minimize the risk of unintentional or unauthorized access or use, and the nature of authorized use should be clearly stated to users.

[0114] Physical environment: The physical environment refers to the physical world that people can sense and / or interact with without the help of electronic systems. A physical environment, such as a physical park, includes physical objects, such as physical trees, physical buildings, and physical people. People can directly sense and / or interact with the physical environment, such as through vision, touch, hearing, taste, and smell.

[0115] Computer-generated reality: In contrast, a computer-generated reality (CGR) environment refers to a fully or partially simulated environment that people perceive and / or interact with via an electronic system. In CGR, a subset of a person's physical movements or a representation thereof is tracked, and in response, one or more features of one or more virtual objects simulated in the CGR environment are adjusted in a manner that complies with at least one physical law. For example, a CGR system can detect a person's head rotation, and in response, adjust the graphical content and sound field presented to the person in a manner similar to the way such views and sounds change in a physical environment. In some cases (e.g., for accessibility reasons), the adjustment of features of virtual objects in a CGR environment can be performed in response to a representation of physical movement (e.g., a voice command). People can sense and / or interact with CGR objects using any of their senses, including vision, hearing, touch, taste, and smell. For example, a person can sense and / or interact with an audio object that creates a 3D or spatial audio environment that provides the perception of a point audio source in 3D space. As another example, an audio object can enable audio transparency, which selectively introduces ambient sounds from the physical environment with or without computer-generated audio. In some CGR environments, a person can sense and / or interact only with an audio object. Examples of CGR include virtual reality and mixed reality.

[0116] Virtual Reality: A virtual reality (VR) environment refers to a simulated environment designed to be based entirely on computer-generated sensory input to one or more senses. A VR environment includes a plurality of virtual objects that a person can sense and / or interact with. For example, trees, buildings, and computer-generated images representing avatars of people are examples of virtual objects. A person can sense and / or interact with virtual objects in a VR environment through a simulation of the person's presence within the computer-generated environment and / or through a simulation of a subset of the person's physical movement within the computer-generated environment.

[0117] Mixed reality: In contrast to VR environments, which are designed to be based entirely on computer-generated sensory input, a mixed reality (MR) environment refers to a simulated environment designed to include sensory input from the physical environment, or representations thereof, in addition to computer-generated sensory input (e.g., virtual objects). On the virtual continuum, a mixed reality environment is anything between a fully physical environment at one end and a virtual reality environment at the other end, but not including both ends. In some MR environments, computer-generated sensory input can respond to changes in sensory input from the physical environment. In addition, some electronic systems used to present MR environments can track position and / or orientation relative to the physical environment to enable virtual objects to interact with real objects (i.e., physical items from the physical environment, or representations thereof). For example, the system can cause movement so that virtual trees appear stationary relative to the physical ground. Examples of mixed reality include augmented reality and augmented virtuality. Augmented reality: An augmented reality (AR) environment refers to a simulated environment in which one or more virtual objects are superimposed on a physical environment or a representation of a physical environment. For example, an electronic system used to present an AR environment may have a transparent or translucent display through which a person can directly view the physical environment. The system can be configured to present virtual objects on a transparent or translucent display so that people use the system to perceive virtual objects superimposed on a physical environment. Alternatively, the system can have an opaque display and one or more imaging sensors that capture images or videos of the physical environment, which are representations of the physical environment. The system combines the image or video with the virtual object and presents the composition on an opaque display. People use the system to indirectly view the physical environment via an image or video of the physical environment and perceive the virtual objects superimposed on the physical environment. As used herein, the video of the physical environment displayed on the opaque display is referred to as "transmitted video", meaning that the system uses one or more image sensors to capture images of the physical environment and uses those images when presenting the AR environment on the opaque display. Further alternatively, the system can have a projection system that projects virtual objects into the physical environment, such as as a hologram or on a physical surface, so that people use the system to perceive virtual objects superimposed on the physical environment. An augmented reality environment also refers to a simulated environment in which a representation of the physical environment is converted by computer-generated sensory information. For example, in providing pass-through video, the system can transform one or more sensor images to impose a selected perspective (e.g., viewpoint) that is different from the perspective captured by the imaging sensor. For another example, the representation of the physical environment can be transformed by graphically modifying (e.g., enlarging) a portion thereof, such that the modified portion can be a representative but not true version of the original captured image. For another example, the representation of the physical environment can be transformed by graphically eliminating or blurring a portion thereof.Augmented Virtual: An augmented virtual (AV) environment refers to a simulated environment in which a virtual environment or a computer-generated environment incorporates one or more sensory inputs from the physical environment. The sensory input may be a representation of one or more characteristics of the physical environment. For example, an AV park may have virtual trees and virtual buildings, but the faces of people are realistically reproduced from images taken of physical people. For another example, a virtual object may take the shape or color of a physical item imaged by one or more imaging sensors. For another example, a virtual object may take a shadow that conforms to the positioning of the sun in the physical environment.

[0118] Hardware: There are many different types of electronic systems that enable a person to sense and / or interact with various CGR environments. Examples include head-mounted systems, projection-based systems, heads-up displays (HUDs), vehicle windshields with integrated display capabilities, windows with integrated display capabilities, displays formed as lenses designed to be placed on a person's eyes (e.g., similar to contact lenses), headphones / earpieces, speaker arrays, input systems (e.g., wearable or handheld controllers with or without tactile feedback), smartphones, tablet computers, and desktop / laptop computers. A head-mounted system may have one or more speakers and an integrated opaque display. Alternatively, a head-mounted system may be configured to accept an external opaque display (e.g., a smartphone). A head-mounted system may incorporate one or more imaging sensors for capturing images or video of the physical environment, and / or one or more microphones for capturing audio of the physical environment. Instead of an opaque display, a head-mounted system may have a transparent or translucent display. A transparent or translucent display may have a medium through which light representing the image is directed to a person's eyes. The display can utilize digital light projection, OLED, LED, μLED, silicon-based liquid crystal, laser scanning light source, or any combination of these technologies. The medium can be an optical waveguide, a hologram medium, an optical combiner, an optical reflector, or any combination thereof. In one embodiment, a transparent or translucent display can be configured to selectively become opaque. A projection-based system can employ retinal projection technology that projects a graphic image onto a person's retina. The projection system can also be configured to project a virtual object into a physical environment, such as a hologram or onto a physical surface.

[0119] According to one embodiment, a head-mounted device is provided, comprising: a first conductive housing; a logic board mounted to the first conductive housing; a first display and a second display, the first display and the second display being mounted to the logic board and configured to display corresponding left and right images; a second conductive housing, the second conductive housing extending around the first conductive housing and the logic board; a cover mounted to the second conductive housing opposite to the first display and the second display, the cover having a third display configured to display an image through the cover; and an antenna having an antenna resonant element formed by a slot in the second conductive housing.

[0120] According to another embodiment, the slot includes a vent, and the electronic device further includes a fan configured to deliver air through the vent.

[0121] According to another embodiment, the head mounted device includes a conductive spring that couples the logic board to the second conductive housing at an antenna feed terminal of the antenna.

[0122] According to another embodiment, the slot comprises a sensor window.

[0123] According to another embodiment, the head-mounted device includes a sensor overlapping the sensor window and configured to collect sensor data through the sensor window.

[0124] According to another embodiment, the sensor overlaps with a first portion of the sensor window, the head-mounted device also includes an additional sensor overlapping with a second portion of the sensor window and configured to collect sensor data through the sensor window, the sensor window having a third portion coupling the first portion to the second portion, and the third portion is narrower than the first portion and the second portion.

[0125] According to another embodiment, the sensor includes a camera configured to capture an image through the sensor window.

[0126] According to another embodiment, the sensor comprises a light detection and ranging sensor.

[0127] According to another embodiment, the head-mounted device includes an optical emitter configured to emit light through the sensor window.

[0128] According to another embodiment, the light comprises infrared light.

[0129] According to another embodiment, the slot includes a card port.

[0130] According to another embodiment, the slot includes a charging port.

[0131] According to another embodiment, the slot comprises an acoustic port.

[0132] According to another embodiment, the slot comprises a button opening.

[0133] According to another embodiment, the grooves are located in a three-dimensional curved surface.

[0134] According to one embodiment, an electronic device is provided, the electronic device including a conductive housing, a vent in the conductive housing, a fan configured to deliver air through the vent, and an antenna having an antenna feed terminal coupled to the conductive housing on an opposite side of the vent.

[0135] According to another embodiment, the ventilation holes are located in a three-dimensional curved surface.

[0136] In accordance with another embodiment, the electronic device includes additional vents in the conductive housing, the fan is configured to transport the air through the additional vents, and the additional vents form an indirectly fed slot antenna resonating element of the antenna.

[0137] According to one embodiment, an electronic device is provided, the electronic device comprising a conductive shell extending around a periphery of the electronic device, a display mounted to the conductive shell, a dielectric window in the conductive shell, a first image sensor overlapping the dielectric window and configured to capture first image sensor data through the dielectric window, a second image sensor overlapping the dielectric window and configured to capture second image sensor data through the dielectric window, and an antenna having an antenna feed terminal coupled to the conductive shell on an opposite side of the dielectric window.

[0138] According to one embodiment, the dielectric window is located in a three-dimensional curved surface.

[0139] The foregoing is merely illustrative, and various modifications may be made by those skilled in the art without departing from the scope and spirit of the embodiments described. The foregoing embodiments may be implemented independently or in any combination.

Claims

1. A head mounted device, comprising: a first conductive housing; a logic board mounted to the first conductive housing; a first display and a second display, the first display and the second display mounted to the logic board and configured to display respective left and right images; a second conductive housing extending around the first conductive housing and the logic board; a cover mounted to the second conductive housing opposite the first display and the second display, the cover having a third display configured to display an image through the cover; and An antenna is provided having an antenna resonating element formed by a slot in the second conductive housing.

2. The head mounted device of claim 1, wherein the slot comprises a vent, and the electronic device further comprises: A fan is configured to deliver air through the vents.

3. The head mounted device according to claim 2, further comprising: A conductive spring couples the logic board to the second conductive chassis at an antenna feed terminal of the antenna.

4. A head-mounted device according to claim 1, wherein the groove includes a sensor window.

5. The head mounted device according to claim 4, further comprising: A sensor overlaps the sensor window and is configured to collect sensor data through the sensor window.

6. The head mounted device of claim 5, wherein the sensor overlaps with a first portion of the sensor window, the head mounted device further comprising: An additional sensor overlaps the second portion of the sensor window and is configured to collect sensor data through the sensor window, wherein the sensor window has a third portion coupling the first portion to the second portion, and the third portion is narrower than the first portion and the second portion.

7. A head-mounted device according to claim 5, wherein the sensor comprises a camera configured to capture images through the sensor window.

8. The head mounted device of claim 5, wherein the sensor comprises a light detection and ranging sensor.

9. The head mounted device according to claim 3, further comprising: An optical emitter is configured to emit light through the sensor window.

10. The head mounted device of claim 9, wherein the light comprises infrared light.

11. The head mounted device of claim 1, wherein the slot comprises a card port.

12. The head mounted device of claim 1, wherein the slot comprises a charging port.

13. The head mounted device of claim 1, wherein the slot comprises an acoustic port.

14. The head mounted device of claim 1, wherein the slot comprises a button opening.

15. The head mounted device of claim 1, wherein the groove is located in a three dimensional curved surface.

16. An electronic device, comprising: Conductive housing; a vent in the conductive housing; a fan configured to deliver air through the vents; and An antenna has an antenna feed terminal coupled to the conductive housing on an opposite side of the vent.

17. The electronic device of claim 16, wherein the ventilation holes are located in a three-dimensional curved surface.

18. The electronic device according to claim 16, further comprising: An additional vent in the conductive housing, wherein the fan is configured to deliver the air through the additional vent, and the additional vent forms an indirectly fed slot antenna resonating element of the antenna.

19. An electronic device, comprising: a conductive housing extending around a perimeter of the electronic device; a display mounted to the conductive housing; a dielectric window in the conductive housing; a first image sensor overlapping the dielectric window and configured to capture first image sensor data through the dielectric window; a second image sensor overlapping the dielectric window and configured to capture second image sensor data through the dielectric window; and An antenna has an antenna feed terminal coupled to the conductive housing on opposite sides of the dielectric window.

20. The electronic device of claim 19, wherein the dielectric window is located in a three-dimensional curved surface.

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