Goggles with slotted loop antenna

Abstract

Eyewear with slot loop antennas producing orthogonal electric fields. The slot loop antennas have a first portion including inner and outer loops producing a first directional electric field and a second portion having corresponding inner and outer loops producing a second directional electric field. The outer loops enclose the corresponding inner loops, with a first slot defined between the corresponding inner and outer loops. A second slot is enclosed by the corresponding inner loop, which can be a cutout. The slot loop antennas include eyewear optical assemblies. In one example, the first portion includes a first optical assembly and the second portion includes a second optical assembly. A common ground plane of the outer loops can extend proximate a nose bridge of the eyewear.

Description

[0001] Cross-references to related applications

[0002] This application claims priority to U.S. Application Serial No. 17 / 386,716, filed July 28, 2021, the contents of which are incorporated herein by reference in their entirety. Technical Field

[0003] This topic relates to a goggle device, such as smart glasses with a see-through display. Background Technology

[0004] Today’s available portable goggle devices (such as smart glasses, headwear, and headgear) integrate cameras, X-ray displays, and antennas. Attached Figure Description

[0005] The accompanying drawings illustrate one or more embodiments by way of example only and not by way of limitation. In the drawings, the same reference numerals denote the same or similar elements.

[0006] Figure 1A This is a side view of an example hardware configuration of a goggle device, which shows a right optical component with an image display and applies field-of-view adjustments to a user interface presented on the image display based on detected head or eye movements of the user.

[0007] Figure 1B It includes a visible light camera, a head motion tracker for tracking the head movements of users wearing goggles, and a circuit board. Figure 1A A top cross-sectional view of the temple of the goggle assembly;

[0008] Figure 2A This is a rear view of an example hardware configuration of a goggle device used in a system for identifying users of goggle devices, the goggle device including an eye scanner on the frame;

[0009] Figure 2B This is a rear view of an example hardware configuration for another goggle device, which includes an eye scanner on the temples used in a system for identifying the user of the goggle device.

[0010] Figure 2C and Figure 2D This is a rear view of an example hardware configuration for a goggle device that includes two different types of image displays.

[0011] Figure 3 It shows Figure 2A The rear perspective view of the goggle assembly depicts the infrared emitter, infrared camera, front of the frame, rear of the frame, and circuit board.

[0012] Figure 4 Is it through Figure 3 A cross-sectional view of the infrared emitter and frame of the goggle device;

[0013] Figure 5 This demonstrates the detection of eye gaze direction;

[0014] Figure 6 The method for detecting eyeball position is shown;

[0015] Figure 7 Examples depicting visible light captured by the left visible light camera as the left original image and visible light captured by the right visible light camera as the right original image;

[0016] Figure 8A A slot antenna created by a rectangular cutout called a slot is shown;

[0017] Figure 8B The electric field distribution of the slot antenna is shown when the slot length L is less than (or equal to) half the wavelength;

[0018] Figure 8C A slot antenna shaped like a ring is shown;

[0019] Figure 8D It shows that it is basically smaller than Figure 8A rectangular antenna Figure 8C The overall dimensions of the ring-shaped antenna;

[0020] Figure 8E The inner opening of the enlarged slot antenna is shown;

[0021] Figure 8F The design shows a ring groove with variations in shape, from circular to rectangular.

[0022] Figure 8G It shows a cutout in the center of a conductive material to create an internal conductor shaped into a ring;

[0023] Figure 8H This shows that the inner conductor is large enough that an additional electric field vector extends from the inner edge of the inner conductor to the inner edge of the outer conductor;

[0024] Figure 8I This demonstrates that by adding a series LC circuit along the aperture and effectively changing the total slot length at the resonant frequency, the antenna can support more frequency bands;

[0025] Figure 8J The voltage standing wave ratio (VSWR) of the slot antenna is shown;

[0026] Figure 8K This demonstrates how the size of the outer conductor is reduced to save space in the overall antenna size;

[0027] Figure 8L An antenna with two slot-ring antennas is shown, which coexist very close to each other and support the same frequency band with minimal coupling.

[0028] Figure 8M This illustrates a narrowing section between two slot ring antennas. Figure 8L Antenna;

[0029] Figure 8N Showing integration into the goggles Figure 8L Antenna;

[0030] Figure 9 A block diagram of the electronic components of the goggle device is shown; and

[0031] Figure 10 This is a flowchart of the operation of a dual-slot ring antenna that generates mutually orthogonal electric fields. Detailed Implementation

[0032] The examples described herein include goggles with a slotted-loop antenna that generates electric fields orthogonal to each other in frequency. The slotted-loop antenna has a first portion and a second portion, the first portion including an inner ring and an outer ring configured to generate a first electric field in a first direction, and the second portion having corresponding inner and outer rings configured to generate a second electric field in a second direction orthogonal to the first direction. The outer ring surrounds the corresponding inner ring, wherein a first slot is defined between the corresponding inner and outer rings. A second slot is surrounded by the corresponding inner ring, and the second slot may be a cutout. The slotted-loop antenna includes goggle optics. In one example, the first portion of the slotted antenna includes a first optical component, and the second portion includes a second optical component. The outer ring may include a common ground plane that may extend adjacent to the nose bridge of the goggle. The two portions of the antenna coexist very close to each other and support the same frequency band with minimal mutual coupling due to the orthogonal electric fields.

[0033] Further objects, advantages, and novel features of the example will be set forth in part in the description which follows, and will become partly apparent to those skilled in the art upon examination of the following and the accompanying drawings, or may be learned by production or operation of the example. The objects and advantages of this subject matter may be realized and obtained by means and combinations of methods, means, and arrangements particularly pointed out in the appended claims.

[0034] In the following detailed description, numerous specific details are illustrated by way of example in order to provide a thorough understanding of the teachings. However, it will be clear to those skilled in the art that these teachings can be practiced without such details. In other examples, well-known methods, processes, components, and circuits have been described in a relatively high-level and undetailed manner to avoid unnecessarily obscuring various aspects of these teachings.

[0035] As used herein, the term "coupled" refers to any logical, optical, physical, or electrical connection, link, etc., through which a signal or light generated or provided by one system element is assigned to another coupled element. Unless otherwise described, coupled elements or devices are not necessarily directly connected to each other and can be separated by intermediate components, elements, or communication media that can modify, manipulate, or transport light or signals.

[0036] The orientation of the goggle device, associated components, and any complete device combining an eye scanner and a camera (as shown in any of the figures in the accompanying drawings) is given by way of example only for illustrative and discussion purposes. In operation for a particular variable optical processing application, the goggle device may be oriented in any other direction suitable for that particular application, such as up, down, sideways, or any other orientation. Furthermore, within the scope used herein, any directional terms (such as front, back, inwards, outwards, facing, left, right, lateral, longitudinal, up, down, upper, lower, top, bottom, and side) are used by way of example only and do not limit the direction or orientation of any optical component or component constructed as otherwise described herein.

[0037] Now refer in detail to the examples shown in the accompanying drawings and discussed below.

[0038] Figure 1A This is a side view of an example hardware configuration of a goggle device 100, which includes an image display 180D. Figure 2A The right optical component 180B of the goggle device 100 includes multiple visible light cameras 114A-B forming a stereo camera. Figure 7 The right visible light camera 114B is located on the right temple 110B.

[0039] The left and right visible light cameras 114A-B have image sensors sensitive to wavelengths within the visible light range. Each of the visible light cameras 114A-114B has a different forward-facing coverage angle; for example, visible light camera 114B has a depicted coverage angle 111B. The coverage angle is the angular range within which the image sensors of the visible light cameras 114A-B pick up electromagnetic radiation and generate images. Examples of such visible light cameras 114A-B include high-resolution complementary metal-oxide-semiconductor (CMOS) image sensors and video graphics array (VGA) cameras, such as 640p (e.g., 640 x 480 pixels, totaling 0.3 megapixels), 720p, or 1080p. Image sensor data from the visible light cameras 114A-B, along with geographic location data, is captured, digitized by an image processor, and stored in memory.

[0040] To provide stereoscopic vision, the visible light camera 114A-B can be coupled to an image processor ( Figure 9 The image processor 912 includes components 912 for digital processing along with timestamps of the captured scene image. The image processor 912 includes circuitry for receiving signals from the visible light cameras 114A-B and processing those signals from the visible light cameras 114A-B into a format suitable for storage in memory. Figure 9 The format is in element 934. The timestamp can be added by image processor 912 or another processor controlling the operation of visible light cameras 114A-B. Visible light cameras 114A-B allow stereo cameras to simulate human binocular vision. The stereo camera provides images based on two captured images (from visible light cameras 114A-B, each with the same timestamp)... Figure 7 Components 758A-B) are used to reproduce three-dimensional images. Figure 7 The ability of the element 715. This three-dimensional image 715 allows for immersive, lifelike experiences, such as for virtual reality or video games. For stereoscopic vision, a pair of images 758A-B are generated at a given moment—one image from each of the left and right visible light cameras 114A-B. Depth perception is provided via optical components 180A-B when the pair of generated images 758A-B from the coverage angles 111A-B of the forward-facing left and right visible light cameras 114A-B are stitched together (e.g., via image processor 912).

[0041] In the example, the user interface field-of-view adjustment system includes a goggle device 100. The goggle device 100 includes a frame 105, a right temple 110B extending from the right side 170B of the frame 105, and a perspective image display 180D including optical components 180B to present a graphical user interface to the user. Figure 2A-B). The goggle device 100 includes a left visible light camera 114A attached to the frame 105 or the left temple 110A to capture a first image of the scene. The goggle device 100 also includes a right visible light camera 114B attached to the frame 105 or the right temple 110B to capture (e.g., simultaneously with the left visible light camera 114A) a second image of the scene that partially overlaps with the first image. Although in Figure 1A -B is not shown, but the user interface field of view adjustment system also includes: a processor 932 coupled to the goggle device 100 and connected to the visible light camera 114A-B; and a memory 934 accessible by the processor 932 and programmed in the memory 934, for example in the goggle device 100 itself or in another part of the user interface field of view adjustment system.

[0042] Although Figure 1A Not shown, the goggle device 100 also includes a head motion tracker (…). Figure 1B Component 109) or eye movement tracker ( Figure 2B Component 213). The goggle device 100 also includes a perspective image display 180C-D of optical components 180A-B for presenting the displayed image sequence, and an image display driver ( Figure 9 The image display driver (942) is coupled to the perspective image display 180C-D of the optical components 180A-B to control the image display 180C-D of the optical components 180A-B to present the displayed image sequence 715, which is described in further detail below. The goggle device 100 also includes a memory 934 and a processor 932 that can access the image display driver 942 and the memory 934. The goggle device 100 also includes programming in the memory (…). Figure 9 (Component 934). The execution of programming by the processor 932 configures the goggle device 100 to perform functions, including the function of presenting an initial displayed image of a sequence of images via a perspective image display 180C-D, the initial displayed image having an initial field of view corresponding to an initial head orientation or an initial eye gaze direction. Figure 5 Component 230).

[0043] The execution of the programming by the processor 932 further configures the goggle device 100 to detect the movement of the user of the goggle device via: (i) via a head motion tracker ( Figure 1B (i) Component 109) tracks the user's head movements, or (ii) via an eye-tracking device ( Figure 2B , Figure 5The element 213) tracks the eye movements of the user's eyes in the goggle device 100. The processor 932, through the execution of programming, further configures the goggle device 100 to determine an initial field-of-view adjustment for the initially displayed image based on the detected user movement. The field-of-view adjustment includes a continuous field of view corresponding to a continuous head direction or a continuous eye direction. The processor 932, through the execution of programming, further configures the goggle device 100 to generate a sequentially displayed image sequence based on the field-of-view adjustment. The processor 932, through the execution of programming, further configures the goggle device 100 to present the sequentially displayed image via the perspective image displays 180C-D of the optical components 180A-B.

[0044] Figure 1B This describes the right visible light camera 114B, the head motion tracker 109, and the circuit board. Figure 1A The diagram shows a top cross-sectional view of the temple of the goggle assembly 100. The left visible light camera 114A is constructed and positioned substantially similarly to the right visible light camera 114B, except that the connection and coupling are located on the left side 170A. As shown, the goggle assembly 100 includes the right visible light camera 114B, a circuit board (which may be a flexible printed circuit board (PCB) 140), and a battery configured to power the goggle 100. A right hinge 126B connects the right temple 110B to the right temple 125B of the goggle assembly 100. In some examples, components of the right visible light camera 114B, the flexible PCB 140, or other electrical connectors or contacts may be located on the right temple 125B or the right hinge 126B.

[0045] As shown in the figure, the goggle device 100 has a head motion tracker 109, which includes, for example, an inertial measurement unit (IMU). An inertial measurement unit is an electronic device that uses a combination of accelerometers and gyroscopes (and sometimes magnetometers) to measure and report specific forces, angular velocities, and sometimes magnetic fields around the body. An inertial measurement unit operates by detecting linear acceleration using one or more accelerometers and detecting rotational rates using one or more gyroscopes. A typical configuration of an inertial measurement unit includes an accelerometer, a gyroscope, and a magnetometer on each of three axes: a horizontal axis (X) for left-right movement, a vertical axis (Y) for up-down movement, and a depth or distance axis (Z) for up-down movement. The accelerometers detect the gravity vector. The magnetometer defines rotation in a magnetic field (e.g., facing south, north, etc.) like a compass providing a direction reference. These three accelerometers are used to detect acceleration along the horizontal, vertical, and depth axes defined above, which can be defined relative to the ground, the goggle device 100, or the user wearing the goggle device 100.

[0046] The goggle device 100 detects user movement by tracking the user's head movements via a head motion tracker 109. Head movements include changes in head orientation relative to an initial head orientation along a horizontal axis, a vertical axis, or a combination thereof during the presentation of an initial displayed image on an image display. In one example, tracking the user's head movements via the head motion tracker 109 includes measuring the initial head orientation along a horizontal axis (e.g., the X-axis), a vertical axis (e.g., the Y-axis), or a combination thereof (e.g., lateral or diagonal movement) via the inertial measurement unit 109. Tracking the user's head movements via the head motion tracker 109 also includes measuring continuous head orientation along the horizontal axis, a vertical axis, or a combination thereof via the inertial measurement unit 109 during the presentation of the initial displayed image.

[0047] Tracking head movements of the user's head via head motion tracker 109 also includes determining changes in head orientation based on both an initial head orientation and a continuous head orientation. Detecting movement of the user of the goggle device 100 also includes determining, in response to head movements tracked by head motion tracker 109, a deviation angle threshold exceeding a horizontal axis, a vertical axis, or a combination thereof. The deviation angle threshold is between approximately 3° and 10°. As used herein, when referring to an angle, the term "about" means a deviation of ±10%.

[0048] Changes along the horizontal axis slide three-dimensional objects (such as characters, Bitmojis, application icons, etc.) into and out of the field of view by, for example, hiding, unhiding, or otherwise adjusting the visibility of the three-dimensional objects. In one example, for instance, changes along the vertical axis display weather information, time of day, date, calendar appointments, etc., when the user looks upward. In another example, the goggle device 100 can be powered off when the user looks downward along the vertical axis.

[0049] The right temple 110B includes a temple body 211 and a temple cap. Figure 1B The temple cap is omitted in the cross-section. Arranged inside the right temple 110B are various interconnected circuit boards, such as PCBs or flexible PCBs, which include controller circuitry for the right visible light camera 114B, one or more microphones 130, one or more speakers 132, low-power wireless circuitry, and an antenna (e.g., for use via Bluetooth). TM (e.g., for short-range wireless network communication), and high-speed wireless circuits and antennas (e.g., for wireless local area network communication via WiFi and positioning via GPS).

[0050] The right visible light camera 114B is coupled to or disposed on a flexible PCB 140 and covered by a visible light camera cover lens, which is aimed through one or more openings formed in the right temple 110B. In some examples, the frame 105 connected to the right temple 110B includes one or more openings for the visible light camera cover lens. The frame 105 includes a front-facing side configured to face away from the user's eyeball. The opening for the visible light camera cover lens is formed on the front surface and extends through the front surface. In this example, the right visible light camera 114B has an outward-facing coverage angle 111B relative to the line of sight or viewing angle of the user's right eye of the goggle device 100. The visible light camera cover lens may also be adhered to the outward-facing surface of the right temple 110B, wherein the opening is formed at an outward-facing coverage angle, but in a different outward direction. Coupling via an intervening component can also be indirect.

[0051] A left (first) visible light camera 114A is connected to a left perspective image display 180C of a left optical assembly 180A to generate a first background scene for a first continuously displayed image. A right (second) visible light camera 114B is connected to a right perspective image display 180D of a right optical assembly 180B to generate a second background scene for a second continuously displayed image. The first and second background scenes partially overlap to present a three-dimensional observable area of ​​the continuously displayed image.

[0052] A flexible PCB 140 is disposed inside the right temple 110B and coupled to one or more other components housed in the right temple 110B. Although shown as a circuit board formed on the right temple 110B, the right visible light camera 114B may be formed on a circuit board on the left temple 110A, temples 125A-B, or frame 105.

[0053] Figure 2A This is a rear view of an example hardware configuration of a goggle device 100, which includes an eye scanner 113 on a frame 105 for use in a system for determining the eye position and gaze direction of the wearer / user of the goggle device 100. Figure 2A As shown, the goggle device 100 is configured for wear by a user. Figure 2A The example shown is eyeglasses. The goggle device 100 can take other forms and can be combined with other types of frames, such as headgear, headphones, or helmets.

[0054] In the eyewear example, the goggle device 100 includes a frame 105 comprising a left edge 107A connected to the right edge 107B via a nose bridge 106 adapted to fit the user's nose. The left and right edges 107A-B include corresponding apertures 175A-B for holding respective optical elements 180A-B (such as lenses and perspective displays 180C-D). As used herein, the term lens refers to a sheet of glass or plastic covered with a transparent or translucent layer having curved and flat surfaces that cause light to converge / diverge, or cause little or no convergence / divergence.

[0055] Although shown as having two optical elements 180A-B, the goggle assembly 100 may include other arrangements, such as a single optical element depending on the application of the goggle assembly 100 or the intended user. As further shown, the goggle assembly 100 includes a left temple 110A adjacent to the left side 170A of the frame 105 and a right temple 110B adjacent to the right side 170B of the frame 105. The temples 110A-B may be integrated into the frame 105 on the respective sides 170A-B (as shown) or implemented as separate components attached to the frame 105 on the respective sides 170A-B. Alternatively, the temples 110A-B may be integrated into temples (not shown) attached to the frame 105.

[0056] exist Figure 2A In the example, the eye scanner 113 includes an infrared emitter 115 and an infrared camera 120. Visible light cameras typically include a blue light filter to block infrared light detection; in this example, the infrared camera 120 is a visible light camera, such as a low-resolution video graphics array (VGA) camera (e.g., 640 x 480 pixels, totaling 0.3 megapixels), where the blue filter has been removed. The infrared emitter 115 and the infrared camera 120 are co-located on the frame 105, for example, both are shown attached to the upper part of the left bezel 107A. One or more of the frame 105 or the left temple 110A and right temple 110B include a circuit board (not shown) that includes the infrared emitter 115 and the infrared camera 120. The infrared emitter 115 and the infrared camera 120 can be connected to the circuit board, for example, by soldering.

[0057] Other arrangements of the infrared emitter 115 and the infrared camera 120 are possible, including arrangements where both the infrared emitter 115 and the infrared camera 120 are located on the right edge 107B or at different positions on the frame 105, for example, the infrared emitter 115 is on the left edge 107A and the infrared camera 120 is on the right edge 107B. In another example, the infrared emitter 115 is on the frame 105 and the infrared camera 120 is on one of the temples 110A-B, or vice versa. The infrared emitter 115 can be substantially attached anywhere on the frame 105, the left temple 110A, or the right temple 110B to emit a pattern of infrared light. Similarly, the infrared camera 120 can be substantially attached anywhere on the frame 105, the left temple 110A, or the right temple 110B to capture at least one reflection variation in the infrared light emission pattern.

[0058] Infrared emitter 115 and infrared camera 120 are arranged to face inward toward the user's eyeball, having part or all of the eyeball's field of view, in order to identify the corresponding eyeball position and gaze direction. For example, infrared emitter 115 and infrared camera 120 are positioned directly in front of the eyeball, in the upper part of the frame 105, or in the temples 110A-B at either end of the frame 105.

[0059] Figure 2B This is a rear view of an example hardware configuration of another goggle device 200. In this example configuration, the goggle device 200 is depicted as including an eye scanner 213 on the right temple 210B. As shown, an infrared emitter 215 and an infrared camera 220 are jointly located on the right temple 210B. It should be understood that the eye scanner 213, or one or more components thereof, may be located on the left temple 210A and other locations on the goggle device 200 (e.g., frame 105). The infrared emitter 215 and the infrared camera 220 are... Figure 2A The infrared emitter is similar to an infrared camera, but the eye scanner 213 can be varied to be sensitive to different light wavelengths, as previously seen in... Figure 2A As described in [the text].

[0060] Similar to Figure 2A The goggle device 200 includes: a frame 105, which includes a left edge 107A connected to the right edge 107B via a nose bridge 106; and the left and right edges 107A-B include corresponding holes that hold corresponding optical elements 180A-B including perspective displays 180C-D.

[0061] Figures 2C to 2DThis is a rear view of an example hardware configuration of a goggle device 100, which includes two different types of perspective image displays 180C-D. In one example, these perspective image displays 180C-D of the optical components 180A-B include integrated image displays. Figure 2C As shown, optical components 180A-B include suitable display matrices 180C-D of any suitable type, such as liquid crystal displays (LCDs), organic light-emitting diode (OLED) displays, waveguide displays, or any other such displays. Optical components 180A-B also include one or more optical layers 176, which may include lenses, optical coatings, prisms, mirrors, waveguides, optical strips, and other optical components of any combination thereof. Optical layers 176A-N may include prisms having suitable dimensions and configurations and including a first surface for receiving light from the display matrix and a second surface for emitting light toward a user's eye. The prisms of optical layers 176A-N extend over all or at least a portion of corresponding apertures 175A-B formed in the left and right edges 107A-B to allow the user to see the second surface of the prism while their eye is viewing through the corresponding left and right edges 107A-B. The first surface of the prisms of optical layers 176A-N faces upward from the frame 105, and the display matrix covers the prisms such that photons and light emitted by the display matrix strike the first surface. The size and shape of the prism are determined such that light is refracted within the prism and guided towards the user's eyeball by the second surface of the prism of optical layer 176A-N. In this respect, the second surface of the prism of optical layer 176A-N may be convex to direct light toward the center of the eyeball. The prism may optionally be sized and shaped to magnify the image projected by the perspective image display 180C-D, and light travels through the prism such that the image viewed from the second surface is larger than the image emitted by the perspective image display 180C-D in one or more dimensions.

[0062] In another example, the perspective image display 180C-D of the optical components 180A-B includes, for example, Figure 2D The projection image display shown is illustrated. Optical assemblies 180A-B include a laser projector 150, which is a three-color laser projector using a scanning mirror or a galvanometer. During operation, a light source (such as the laser projector 150) is positioned in or on one of the temples 125A-B of the goggle assembly 100. Optical assemblies 180A-B include one or more optical strips 155A-N spaced apart across the width of the lens of the optical assembly 180A-B or across the depth between the front and rear surfaces of the lens.

[0063] When photons projected by the laser projector 150 travel through the lenses of the optical components 180A-B, they encounter optical bands 155A-N. When a particular photon encounters a particular optical band, the photon is either redirected toward the user's eye or it is passed to the next optical band. The combination of modulation of the laser projector 150 and modulation of the optical bands can control specific photons or beams. In the example, the processor controls the optical bands 155A-N by initiating mechanical, acoustic, or electromagnetic signals. Although shown as having two optical components 180A-B, the goggle device 100 may include other arrangements, such as single or three optical components, or the optical components 180A-B may have been arranged differently depending on the application of the goggle device 100 or the intended user.

[0064] like Figures 2C to 2D As further shown, the goggle assembly 100 includes a left temple 110A adjacent to the left side 170A of the frame 105 and a right temple 110B adjacent to the right side 170B of the frame 105. The temples 110A-B can be integrated into the frame 105 on the respective sides 170A-B (as shown) or implemented as separate components attached to the frame 105 on the respective sides 170A-B. Alternatively, the temples 110A-B can be integrated into temples 125A-B attached to the frame 105.

[0065] In one example, the perspective image display includes a first perspective image display 180C and a second perspective image display 180D. The goggle device 100 includes first and second openings 175A-B that hold corresponding first and second optical components 180A-B. The first optical component 180A includes the first perspective image display 180C (e.g., Figure 2C The display matrix or optical strip and projector (not shown). The second optical assembly 180B includes a second perspective image display 180D (e.g., a display matrix or optical strip and a projector, not shown). Figure 2C The display matrix or optical strip 155A-N and projector 150). The continuous field of view of the continuously displayed image includes a viewing angle between approximately 15° and 30° measured horizontally, vertically, or diagonally, and more specifically, a viewing angle of 24°. The continuously displayed image with a continuous field of view represents a combined three-dimensional observable area that is visible by stitching together two display images presented on the first and second image displays.

[0066] As used herein, “view of view” describes the angular range of the field of view associated with the displayed image presented on each of the left and right image displays 180C-D of the optical components 180A-B. “Coverage angle” describes the angular range of the lens of the visible light camera 114A-B or the infrared camera 220 that can image. Typically, the image circle produced by the lens is large enough to completely cover the film or sensor, and may include some vignetting (i.e., the brightness or saturation of the image decreases towards the periphery compared to the center of the image). If the coverage angle of the lens does not fill the sensor, the image circle will be visible, typically with strong vignetting towards the edges, and the effective view of view will be limited to the coverage angle. “Field of view” is intended to describe the area of ​​the observable region that a user of the goggle device 100 can see through his or her eyeballs via the displayed image presented on the left and right image displays 180C-D of the optical components 180A-B. The image display 180C of the optical components 180A-B can have a field of view with a coverage angle between 15° and 30° (e.g., 24°) and a resolution of 480×480 pixels.

[0067] Figure 3 It shows Figure 2A Rear perspective view of the goggle assembly. The goggle assembly 100 includes an infrared emitter 215, an infrared camera 220, a front part of the frame 330, a rear part of the frame 335, and a circuit board 340. Figure 3 As can be seen, the upper left edge of the goggle frame of the goggle device 100 includes a front part 330 and a rear part 335. An opening for the infrared emitter 215 is formed on the back part 335 of the goggle frame.

[0068] As shown in the circumferential section 4 in the upper middle portion of the left edge of the frame, a circuit board (which is a flexible PCB 340) is sandwiched between the front portion 330 and the rear portion 335 of the frame. The left temple 110A is also shown in more detail attached to the left temple 325A via the left hinge 126A. In some examples, components of the eye movement tracker 213 (including the infrared emitter 215, the flexible PCB 340, or other electrical connectors or contacts) may be located on the left temple 325A or the left hinge 126A.

[0069] Figure 4 Is passing through and Figure 3 A cross-sectional view of the infrared emitter 215 and the frame corresponding to the surrounding section 4 of the goggle assembly. Figure 4The cross-section shows multiple layers of the goggle assembly 100, as shown, with the frame including a front portion 330 and a rear portion 335. A flexible PCB 340 is disposed on the front portion 330 and connected to the rear portion 335. An infrared emitter 215 is disposed on the flexible PCB 340 and covered by an infrared emitter cover lens 445. For example, the infrared emitter 215 is reflowed onto the back side of the flexible PCB 340. By subjecting the flexible PCB 340 to controlled heat from molten solder paste to connect the two components, the reflow attaches the infrared emitter 215 to contact pads formed on the back side of the flexible PCB 340. In one example, the reflow is used to surface mount the infrared emitter 215 onto the flexible PCB 340 and electrically connect the two components. However, it should be understood that vias can be used, for example, to connect leads from the infrared emitter 215 to the flexible PCB 340 via interconnects.

[0070] The frame back 335 includes an infrared emitter opening 450 for an infrared emitter cover lens 445. The infrared emitter opening 450 is formed on the rearward-facing side of the frame back 335, which is configured to face inwards toward the user's eyeball. In this example, a flexible PCB 340 can be attached to the frame front 330 via a flexible PCB adhesive 460. The infrared emitter cover lens 445 can be attached to the frame back 335 via an infrared emitter cover lens adhesive 455. Coupling via an intervening component can also be indirect.

[0071] In the example, processor 932 utilizes eye tracker 213 to determine, for example, Figure 5 The eye gaze direction 230 of the wearer's eyeball 234 shown, and as... Figure 6 The wearer's eyeball 234 is shown in the eye window, indicating its position 236. The eye tracker 213 is a scanner that uses infrared illumination (e.g., near-infrared, short-wavelength infrared, mid-wavelength infrared, long-wavelength infrared, or far-infrared) to capture images of changes in the reflection of infrared light from the eyeball 234 to determine the gaze direction 230 of the pupil 232 of the eyeball 234 and the eyeball position 236 relative to the perspective display 180D.

[0072] Figure 7 An example of capturing visible light with a camera is depicted. Visible light is captured by a left visible light camera 114A with a left visible light camera field of view 111A as a left original image 758A. Visible light is captured by a right visible light camera 114B with a right visible light camera field of view 111B as a right original image 758B. Based on the processing of the left original image 758A and the right original image 758B, the processor 932 generates a three-dimensional depth map 715 of the three-dimensional scene in an overlapping field of view 713, hereinafter referred to as an image.

[0073] slot ring antenna

[0074] Augmented reality (AR) devices enable the blending of computer-generated images and audio with the real world (potentially at variable scales) to achieve unparalleled immersion. AR technology is beneficial for many applications, from altering maps behind weather reporters to displays embedded in car windshields to show telemetry and navigation data. This technology is particularly noteworthy in wearable devices such as smart glasses and goggles. When worn, this AR technology can interactively present images and sounds to the wearer's eyes and ears in real time, as needed.

[0075] Integrating AR into wearable form factors is a challenging task, as this technology requires massive computing power to "map" the environment. If all processing is done on the wearable device itself, these powerful processors require energy-dense batteries to power them and excellent heat dissipation to ensure both efficiency and comfort. The optical engine needs to convert electricity into light very efficiently and project it into the wearer's eyes. There's also a fashion aspect, as wearable devices must be lightweight, aesthetically pleasing when worn, and have excellent weight distribution to gain mainstream appeal.

[0076] Low-latency wireless communication systems integrated into wearable AR devices help alleviate some of the challenges by offloading some of the computational work to remote computers, such as pucks, nearby smartphones, or cloud services. 5G New Radio (NR) and WiFi 6 offer extremely low-latency communication solutions; however, they require multiple, multi-band, efficient orthogonal antenna designs to function correctly. Even in scenarios where computation can be performed on the wearable device, low-latency, high-speed connectivity to a wide area network (WAN) can meaningfully extend the capabilities of wearable AR devices, from downloading pre-mapped environments to live streaming content. This wireless connectivity is expected to be achieved within an antenna architecture that works effectively when integrated into AR wearable devices.

[0077] Crucially, the wireless communication systems embedded in AR wearables are highly efficient, unaffected by detuning and desensitization when worn on the head, and consistently comply with stringent safety regulations such as specific absorptivity (SAR). Therefore, there is a need to place these antennas on smart glasses and achieve a metal-free physical volume to meet performance targets. However, as mentioned earlier, space and weight are critical in these devices, as they are also fashion accessories. Therefore, there is a strong incentive to reuse existing volume for antenna design.

[0078] In AR-enabled goggles with RF-friendly material properties, a physically large non-metallic structure is the optical waveguide that transmits light (such as images from an image display or invisible light used for eye tracking). Utilizing the frame that holds the waveguide in place as an antenna is one way to achieve high-speed wireless connectivity in these devices. Various methods can be used to utilize the frame structure and its encapsulated waveguide as an antenna. The slot ring concept may be best suited for wearable applications due to its flexibility in achieving multi-band radiation and its body efficiency.

[0079] A good starting point for understanding the basic principles of slot ring antennas is understanding how slot antennas work. For example... Figure 8A As shown, a slot antenna 800 is formed by creating a rectangular cutout 802, called a slot, in a conductive material 804 (such as a metal), and placing an antenna feed line 806 across the slot opening as shown. The width h of the slot 802 is typically much smaller than the length L of the slot.

[0080] Figure 8B The electric field distribution of the slot antenna 800 is shown when the slot length L is less than (or equal to) half the wavelength. These electric fields peak at the center of slot 802 and decrease sinusoidally as they move toward the two edges, because these slot edges are essentially short-circuited (since h << L) and thus no electric field is generated. Figure 8B As indicated by the middle arrow, the field vectors used for the electric field are all aligned and point in the same direction, which implies a constructive time-varying electric field. Due to this behavior, radiation is generated from the slot opening 802. The location of the antenna feed 806 determines the input impedance presented to the RF front end by the antenna. The closer the antenna 800 is to the edge, the lower the impedance, and the closer it is to the center, the higher the impedance.

[0081] refer to Figure 8C The slot antenna 810 is shown as a ring. The width of the slot antenna 810 is still h, and the length of the slot (now the outer edge of the ring) is still L. Figure 8C The two shorting ends in the middle are now merged at 808 to form a single shorting, thereby connecting the conductive material 804 inside the slot 802 to the conductive material 804 outside the slot 802.

[0082] Figure 8C The electric field distribution of the slot-ring antenna 810 is shown when the slot length L, which forms the outer edge of the ring, is less than (or equal to) half a wavelength. The electric field has a similar distribution to the original slot antenna 800, but it follows the curvature of the ring. The electric field peaks precisely at the "Ring Short" position 808, because the electric field originates from equidistant points at the ends of the short circuit in the original slot 802. Figure 8CAs shown, the electric field vectors do not always add up constructively neatly, and some energy cancellation occurs. This means that this form of ring slot antenna 810 is a worse antenna than the conventional slot antenna 800, but the overall size of the slot antenna is generally smaller, such as... Figure 8D As shown.

[0083] Goggles including slotted ring antenna

[0084] The ring-shaped slot antennas 800 and 810 radiate efficiently by utilizing the electric field vectors that are constructively added within the slot. Most of the RF energy is confined within the slot 802, and a minimum current exists at the center of the internal conductive material 804. Therefore, as... Figure 8E As shown, by shaving off a small portion to create an opening 822 to create a slot antenna 820, there is almost no loss. The antenna behavior remains unchanged as long as the condition r2 << r1 holds.

[0085] refer to Figure 8F The annular slot design was improved by changing the shape from circular to rectangular. As can be seen, the electric field vectors are no longer partially canceled out, but rather constructively added where they are most important. There are some opposing electric field vectors that would cancel each other out on the short edges of the rectangular notch 802, but since most of the electric field is located on the long edges spanning the short-circuit pins, the overall radiation efficiency of the antenna 830 is meaningfully higher than that of the other two. Figure 8E The antenna 820 shown is illustrated. As shown, a small opening 832 is created at the center of the loop antenna.

[0086] refer to Figure 8G Antenna 840 is generated by improving antenna 830 by increasing the ring size r2, such that the condition r2 << r1 no longer holds. A cutout 842 at the center of the conductive material 804 creates an inner conductor 844 shaped as a ring. This inner conductor 844 is large enough that an additional electric field vector 846 extends from the inner edge 848 of the inner conductor 844 to the inner edge 850 of the outer conductor, as... Figure 8H The conductive material 804 is shown in the diagram. The outer conductive material 804 is also referred to as the ground plane. In addition to the original electric field vector 852 extending from the outer edge 854 of the inner conductor 844 to the inner edge 850 of the outer conductive material 804, these electric field vectors 846 are additional. The amplitudes of the electric field vectors 846 and 852 of the antenna 840 gradually decrease... Figure 8F The decrease in the original electric field vector shown is exactly the same. The amplitudes of electric field vectors 846 and 852 peak at a position opposite to that of shorting pin 856 and gradually decrease as one moves away from that position.

[0087] and Figure 8F Compared to the baseline antenna, Figure 8HThe antenna 840 shown allows for a more distributed radiated electric field, which is equivalent to widening the slot 802 (i.e., increasing the effective h). As long as the condition heff << L still holds, the increase in slot width leads to an increase in the operating bandwidth of the slot antenna 840 because it reduces the additional capacitance seen by the antenna from the slot.

[0088] Antenna 840 is flexible enough to operate at multiple frequencies. If L = λ1 / 2 at frequency f1, a feed position is directly provided, causing the antenna to resonate at frequency f1. Given the properties of the slot antenna, it will also resonate at frequencies 3f1, 5f1, etc. Figure 8I As shown, by adding a series LC circuit along the aperture at 874 and effectively changing the total slot length at the resonant frequency of this series LC circuit, antenna 840 can support more frequency bands, thus forming aperture-tuned antenna 860. Aperture-tuned slot-loop antenna 860 treats the series LC circuit as open at all frequency bands except f2. When the operating frequency is below f2, the capacitor dominates, and when the frequency is higher, the inductor begins to dominate the impedance. However, in the frequency band around the resonant frequency, the circuit is short-circuited, essentially a replication of the short-circuit loop. If L2 is chosen such that L2 = λ2 / 2, where λ2 is the wavelength at f2, then practically... Figure 8I The two slot antennas shown are as follows. The first original slot antenna has a total length L, and the second slot antenna appears only at f2 with a total length L2. Figure 8J The voltage standing wave ratio (VSWR) of the antenna 860 is shown. As can be seen, natural resonances exist at f1 and f2, as well as odd harmonics at f1. The bandwidth can be increased or more frequency bands can be covered by combining bands, such as by changing the length accordingly. Figure 8J As shown. More circuitry in these tuned cascaded LC circuits can be added to the aperture to increase the number of frequency bands the antenna can support. The positions of these cascaded LC circuits are chosen such that they are half a wavelength away from the short-circuit ring in the direction of the antenna feed at the resonant frequency.

[0089] Dual-slot antenna

[0090] refer to Figure 8KThe diagram illustrates antenna 870, in which the size of the outer conductive material 804 is reduced to save space within the overall antenna size. However, in an ideal slot antenna, the outer conductive material 804 would be infinite, which is impractical. Accordingly, typical slot antennas rely on an electrically large ground plane (>10λ). The total electric field radiated by the slot antenna is a combination of the electric field from the slot 802 and the electric field diffracted from the edges of the finite outer conductive material 804. When the outer conductive material 804 is large, the diffraction field is negligible. As the outer conductive material 804 becomes smaller, forming an outer loop, more energy is diffracted at the edges of the ground plane, and this results in a decrease in antenna gain. However, for many consumer electronics applications, this is the price to pay to accommodate the antenna size, but efforts should be made to maximize the width of the outer conductor.

[0091] The overall size of antenna 870 can be further reduced by dielectric loading of the notch 842 (also called the inner slot) and the outer slot 802 with a filler material. The higher the dielectric constant of the filler material, the higher the effective dielectric constant the slot antenna will see. If the filler material is conductive, this translates to ohmic losses in the antenna, so using the purest possible dielectric material is crucial for maximum antenna efficiency. The resonant frequency of antenna 870 is inversely proportional to the square root of the effective dielectric constant. Thus, a large antenna performance benefit can be extracted from the same physical volume through dielectric loading. The cost of reducing the size of antenna 870 using this method is a reduction in bandwidth. Dielectric loading concentrates the radiated electric field by pulling the radiated electric field into the radiated electric field, resulting in a narrower impedance bandwidth. However, by combining this with the multi-band approach described earlier, the bandwidth loss can be compensated to some extent while maintaining miniaturization.

[0092] It is possible to use materials used to manufacture waveguide glass to fill the inner slot 842. These materials typically have very low loss tangents (<0.001) and high relative permittivity (>10). The outer slot 802 can be filled with any low-loss insulating material, such as plastic or even air, depending on the construction of the shape. Furthermore, the feed line 872 and short-circuit ring position 874 of the antenna 870 are positioned 90 degrees offset from each other, thereby producing a result in the basic mode (at f1) that is consistent with... Figure 8H The radiated electric fields shown are orthogonal to each other.

[0093] refer to Figure 8L Antenna 880 is shown with two slot ring antennas 880A and 880B, which coexist very close to each other and support the same frequency band (f1 in this example), having minimal coupling due to orthogonal electric fields. Antennas 880A and 880B have feed lines 882A and 882B, respectively, and short-circuit loop positions 884A and 884B, respectively, thereby creating a connection with the basic mode (at f1). Figure 8H The corresponding radiated electric fields are orthogonal to the radiated electric fields shown. The coupling is frequency-dependent because the radiated electric fields are not always constrained to the orthogonal edges between the two antennas (increased coupling may exist at f2 or 3f1).

[0094] The basic antenna design of antenna 880 is an antenna array including antennas 880A and 880B, each of which is formed by a slot ring supporting two orthogonal electric field polarizations, thus ensuring meaningful polarization diversity of the wireless communication system, which can be embedded in a wearable augmented reality device (such as goggles 100).

[0095] refer to Figure 8M Antenna 890 is modified to allow it to be integrated into goggles 100. A portion of the conductive material 804 extending between antennas 880A and 880B is narrowed to correspond to the bridge of the frame 105 of goggles 100, and the relatively distal ends of the conductive material 804 extend to allow them to be integrated into the temples 110 of goggles 100. Additional precautions may be taken to improve isolation between array elements.

[0096] refer to Figure 8N Antenna 890 is shown as integrated into goggles 100. The slotted ring antenna 890 can be implemented in goggles 100 in several ways. One approach is to begin with a block of aluminum, machining it into a stylish, lightweight frame 105 that can support optics 180A and 180B for displaying images on corresponding displays 180C and 180D. On this aluminum frame 105, a slot 802 is machined with an antenna-friendly gap, leaving recessed shorting bars in the correct positions. Next, polycarbonate insulators are molded into the gaps formed by the machined slot 802 to form antennas 880A and 880B. This ensures that the final frame 105 is smooth and stylish. Optics 180A and 180B can be separated for each eyeball, and the same treatment can be applied to both eyeballs. The transceiver (not shown) of antenna 890 can be located in temple 110, and energy can be transferred from the transceiver to antenna 890 via coaxial cable or liquid crystal polymer (LCP) based transmission line. As can be seen, this design makes both internal conductor 844 and external conductive material 804 visible. With this design, outer slot 802 becomes part of the industrial design and the choice of polycarbonate material can be modified to meet fashion needs. It can also be painted.

[0097] Another method to implement the antenna 890 is to use a metal frame 105 and utilize the metal frame as the external conductive material 804. Then, for the inner conductor 844, a flexible printed circuit (FPC) based antenna is used, which is adhered to the inner surface of the outer lens and the FPC antenna is hidden behind the frame. This method allows both the inner slot 842 and the outer slot 802 to be substantially filled with lens material. In the same context, the inner conductor 844 can be part of an assembly structure together with the waveguide and lens, and can be mounted next to the waveguide.

[0098] If the frame 105 is made of plastic, the antenna 890 can also be implemented. In this case, both the inner and outer conductors are molded inside the plastic, or they are both inserted into a housing sculpted from plastic. In this embodiment, the outer groove 802 is filled with plastic used as the frame 105, and the inner groove 842 is filled with lens material.

[0099] Figure 9 A high-level functional block diagram is depicted, including example electronic components disposed in goggles 100 / 200. The electronic components shown include a processor 932, a memory 934, and a perspective image display 180C, 180D including an embedded antenna 808.

[0100] The memory 934 includes instructions for execution by the processor 932 to implement the functions of the goggles 100 / 200, including instructions for the processor 932 to control the image 715. The processor 932 receives power from a battery (not shown) and executes instructions stored in the memory 934 or integrated on a chip with the processor 932 to perform the functions of the goggles 100 / 200, and communicates with external devices via a wireless connection.

[0101] The user interface adjustment system 900 includes a wearable device, which is equipped with an eye movement tracker 213 (e.g., in...). Figure 2B The goggle device 100 is shown as having an infrared transmitter 215 and an infrared camera 220. The user interface adjustment system 900 also includes a mobile device 990 and a server system 998 connected via different networks. The mobile device 990 can be a smartphone, tablet, laptop computer, access point, or any other such device capable of connecting to the goggle device 100 using both low-power wireless connection 925 and high-speed wireless connection 937. The mobile device 990 is connected to the server system 998 and the network 995. The network 995 can include any combination of wired and wireless connections.

[0102] The goggle device 100 includes at least two visible light cameras 114A-B (one associated with the left side 170A and one associated with the right side 170B). The goggle device 100 also includes two perspective image displays 180C-D (one associated with the left side 170A and one associated with the right side 170B) of optical components 180A-B. The goggle device 100 also includes an image display driver 942, an image processor 912, low-power circuitry 920, and high-speed circuitry 930. Figure 9 The components shown for the goggle assembly 100 / 200 are located on one or more circuit boards, such as PCBs or flexible PCBs, in the temples 110A-B, as previously described. Alternatively or additionally, the depicted components may be located in the temples, frames, hinges, or nose bridge of the goggle assembly 100. The left and right visible light cameras 114A-B may include digital camera elements, such as complementary metal-oxide-semiconductor (CMOS) image sensors, charge-coupled devices, lenses, or any other corresponding visible or light-capturing elements that can be used to capture data, including images of scenes with unknown objects.

[0103] The eye-tracking program implements user interface field-of-view adjustment instructions, including instructions for causing the goggle device 100 to track the eye movements of the user's eyes via an eye-tracker 213. Other implemented instructions (functions) cause the goggle device 100 to determine an initial field-of-view adjustment for the initially displayed image based on detected eye movements of the user corresponding to consecutive eye directions. Further implemented instructions generate a sequentially displayed image sequence based on the field-of-view adjustment. The sequentially displayed image is generated as a visible output to the user via the user interface. This visible output appears on the perspective image displays 180C-D of the optical components 180A-B, which are driven by an image display driver 942 to present the displayed image sequence, including the initial displayed image with the initial field of view and the sequentially displayed image with a continuous field of view.

[0104] like Figure 9As shown, the high-speed circuit 930 includes a high-speed processor 932, a memory 934, and a high-speed wireless circuit 936. In the example, an image display driver 942 is coupled to the high-speed circuit 930 and operated by the high-speed processor 932 to drive the left image display 180C and right image display 180D of the optical components 180A-B to create virtual images. The high-speed processor 932 can be any processor capable of managing the high-speed communication and operation of any general-purpose computing system required by the goggle device 100. The high-speed processor 932 includes the processing resources required to manage high-speed data transmission over a high-speed wireless connection 937 to a wireless local area network (WLAN) using the high-speed wireless circuit 936. In some examples, the high-speed processor 932 executes an operating system, such as the LINUX operating system or other such operating system of the goggle device 100, and the operating system is stored in the memory 934 for execution. Among other duties, the high-speed processor 932, which executes the software architecture of the goggle device 100, is used to manage data transmission utilizing the high-speed wireless circuit 936. In some examples, the high-speed wireless circuit 936 is configured to implement the Institute of Electrical and Electronics Engineers (IEEE) 802.11 communication standard, also referred to herein as Wi-Fi. In other examples, other high-speed communication standards can be implemented by the high-speed wireless circuit 936.

[0105] The low-power wireless circuit 924 and high-speed wireless circuit 936 of the goggle device 100 may include short-range transceivers (e.g., UWB or Bluetooth). TM The mobile device 990 (including a transceiver that communicates via a low-power wireless connection 925 and a high-speed wireless connection 937) and a wireless wide-area, local area, or wide-area transceiver (e.g., cellular or WiFi) including an antenna 808. The mobile device 990 (including a transceiver that communicates via a low-power wireless connection 925 and a high-speed wireless connection 937) can be implemented using the architectural details of the glasses device 100, as can other components of the network 995.

[0106] Memory 934 includes any storage device capable of storing various data and applications, including, among other things, color maps, camera data generated by the left and right visible light cameras 114A-B and image processor 912, and images generated by image display driver 942 displayed on perspective image displays 180C-D of optical components 180A-B. While memory 934 is shown as integrated with high-speed circuitry 930, in other examples, memory 934 may be a separate, independent component of goggle device 100. In some such examples, electrical routing lines may provide a connection from image processor 912 or low-power processor 922 to memory 934 via a chip including high-speed processor 932. In other examples, high-speed processor 932 may manage addressing of memory 934 such that low-power processor 922 will bootstrap high-speed processor 932 whenever a read or write operation involving memory 934 is required.

[0107] Server system 998 may be one or more computing devices as part of a service or network computing system. For example, the one or more computing devices may include a processor, memory, and a network communication interface for communicating with mobile device 990 and goggle device 100 via network 995. Goggle device 100 is connected to a host computer. For example, goggle device 100 may be paired with mobile device 990 via high-speed wireless connection 937 or connected to server system 998 via network 995.

[0108] The output component of the goggle device 100 includes a visual component, such as in Figures 2C to 2D The optical components 180A-B described herein include left and right image displays 180C-D (e.g., displays such as liquid crystal displays (LCDs), plasma display panels (PDPs), light-emitting diode (LED) displays, projectors, or waveguides). The image displays 180C-D of the optical components 180A-B are driven by an image display driver 942. The output components of the goggle device 100 also include acoustic components (e.g., speakers), haptic components (e.g., vibration motors), other signal generators, etc. The input components of the goggle device 100, mobile device 990, and server system 998 may include alphanumeric input components (e.g., keyboards, touchscreens configured to receive alphanumeric input, optical keyboards, or other alphanumeric input components), point-based input components (e.g., mice, touchpads, trackballs, joysticks, motion sensors, or other pointing instruments), haptic input components (e.g., physical buttons, touchscreens that provide position and force for touch or touch gestures, or other haptic input components), audio input components (e.g., microphones), etc.

[0109] The goggle device 100 may optionally include additional peripheral device elements. Such peripheral device elements may include biometric sensors, additional sensors, or display elements integrated with the goggle device 100. For example, peripheral device elements may include any I / O components, including output components, motion components, position components, or any other such components described herein. The goggle device 100 may take other forms and may be combined with other types of frames, such as headgear, headphones, or helmets.

[0110] For example, the biometric components of the user interface field of view adjustment 900 include components for detecting facial expressions (e.g., hand expressions, facial expressions, vocal expressions, body posture, or eye tracking), measuring biosignals (e.g., blood pressure, heart rate, body temperature, sweating, or brain waves), and recognizing a person (e.g., voice recognition, retinal recognition, facial recognition, fingerprint recognition, or EEG-based recognition). Motion components include accelerometer components (e.g., accelerometers), gravity sensor components, rotation sensor components (e.g., gyroscopes), etc. Position components include position sensor components (e.g., GPS receiver components) for generating position coordinates, and WiFi or Bluetooth for generating positioning system coordinates. TM Transceivers, altitude sensor assemblies (e.g., altimeters or barometers that detect air pressure from which altitude can be derived), orientation sensor assemblies (e.g., magnetometers), and the like. Such positioning system coordinates can also be received from the mobile device 990 via wireless connections 925, 937 through low-power wireless circuit 924 or high-speed wireless circuit 936.

[0111] Based on some examples, an "application" or "multiple applications" is a program that performs functions defined in a program. One or more applications can be created using different programming languages, structured in various ways, such as object-oriented programming languages ​​(e.g., Objective-C, Java, or C++) or procedural programming languages ​​(e.g., C or assembly language). In specific examples, third-party applications (e.g., those used by entities from vendors different from those on a particular platform) TM or iOS TM Applications developed using a Software Development Kit (SDK) can run on mobile operating systems such as iOS. TM ANDROID TM , Mobile software running on a mobile phone (Phone) or another mobile operating system. In this example, a third-party application may invoke API calls provided by the operating system to facilitate the functionality described herein.

[0112] Figure 10This is a flowchart 1000 illustrating the operation of the slot antenna 890. These blocks do not need to be executed sequentially, and processing and wireless communication via antennas 880A and 880B can be performed simultaneously.

[0113] At box 1002, the RF signal at frequency f1 is used to... Figure 8L The slot antenna 890 shown is powered. This is accomplished by feeding RF signals to slot antenna 880A via antenna feed line 882A and to slot antenna 880B via antenna feed line 882B.

[0114] At frame 1004, the inner ring 844 of antenna 880A and the outer conductive material 804 form an outer ring that radiates an electric field at frequency f1 in the first direction d1. This electric field... Figure 8L As shown in the image.

[0115] At frame 1006, the inner ring 844 of antenna 880B and the outer conductive material 804 form an outer ring that radiates an electric field in a second direction d2 orthogonal to the first direction d1. This also... Figure 8L As shown in the image.

[0116] Slot antennas 890, having two slot ring antennas 880A and 880B, coexist very close to each other and support the same frequency band (at f1 in this example), where they have minimal coupling to each other due to orthogonal electric fields. The slot antennas 890 are integrated into the goggles 100, enabling the goggles to support wireless communication and having increasing electric fields that are orthogonal to each other.

[0117] It will be understood that the terms and expressions used herein have the general meanings they are given in the respective fields of inquiry and research, unless otherwise specified herein. Relational terms such as "first" and "second" may be used merely to distinguish one entity or action from another, without necessarily requiring or implying any actual such relationship or order between the entities or actions. The terms "comprises," "comprising," "includes," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes or comprises a list of elements or steps includes not only those elements or steps but may also include other elements or steps not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element preceded by "a" or "an" does not exclude the presence of additional identical elements in the process, method, article, or apparatus that includes that element.

[0118] Unless otherwise stated, any and all measurements, values, ratings, locations, amplitudes, sizes, and other specifications set forth in this specification (including in the following claims) are approximate and imprecise. Such quantities are intended to have a reasonable range consistent with the functions they relate to and with the conventions of the field to which they belong. For example, unless expressly stated otherwise, parameter values, etc., may deviate from the quantities by up to ±10%.

[0119] Furthermore, as can be seen from the detailed description above, different features are combined in different examples for the purpose of simplifying this disclosure. This method of disclosure should not be construed as reflecting an intention to require more features than are expressly stated in each claim. Rather, as reflected in the following claims, the subject matter to be protected lies in fewer features than all the features of any single disclosed example. Therefore, the following claims are thus incorporated into the detailed description, wherein each claim is independently claimed as a separate subject matter.

[0120] While the foregoing has described what is considered the best pattern and other examples, it should be understood that various modifications may be made therein, and the subject matter disclosed herein can be implemented in different forms and examples, and is applicable to many applications, of which only a few are described herein. The appended claims are intended to claim protection for any and all modifications and variations that fall within the true scope of this concept.

Claims

1. A type of protective goggles, comprising: Eyeglass frames; A perspective display, supported by the frame and configured to generate images; as well as A slot antenna coupled to the frame and configured to transmit a wireless signal at a first frequency, wherein the slot antenna has a first portion and a second portion, the first portion and the second portion being configured to generate a corresponding radiated electric field in a direction orthogonal to each other. The first portion has a first inner ring, and the second portion has a second inner ring, wherein an outer ring surrounds the first inner ring and the second inner ring.

2. The goggles according to claim 1, further comprising an inner groove surrounded by the first inner ring and an outer groove positioned between the first inner ring and the outer ring.

3. The goggles according to claim 1, wherein, The first portion and the second portion each have a corresponding antenna feed and a short-circuit loop configured to generate the respective radiated electric fields orthogonal to each other.

4. The goggles according to claim 3, wherein, The short-circuit ring of the first part and the short-circuit ring of the second part are offset from each other by 90 degrees.

5. The goggles according to claim 3, wherein, The antenna feed line of the first part is offset by 90 degrees relative to the short-circuit ring of the first part.

6. The goggles according to claim 1, wherein, The goggles also include at least one optical component, wherein the slot antenna is configured to surround the at least one optical component.

7. The goggles according to claim 6, wherein, The optical components include the perspective display.

8. The goggles according to claim 7, wherein, The goggles include a first optical component and a second optical component, wherein the first portion surrounds the first optical component and the second portion surrounds the second optical component.

9. The goggles according to claim 8, wherein, The first part and the second part share a common ground plane.

10. The goggles according to claim 9, wherein, The frame has a nose bridge extending between the first optical component and the second optical component, wherein the common ground plane extends along the nose bridge.

11. A method of using goggles, the goggles having a frame, a see-through display supported by the frame and configured to generate an image, and a slot antenna coupled to the frame and configured to transmit a wireless signal at a first frequency, wherein, The slot antenna has a first portion and a second portion, each of which is configured to generate a corresponding radiated electric field orthogonal to the other portion, including: The first portion radiates a first electric field in a first direction; and The second part radiates a second electric field in a second direction orthogonal to the first direction; The first portion has a first inner ring, and the second portion has a second inner ring, wherein the outer ring surrounds the first inner ring and the second inner ring.

12. The method of claim 11, further comprising an inner groove surrounded by the first inner ring and an outer groove located between the first inner ring and the outer ring.

13. The method according to claim 11, wherein, The first portion and the second portion each have a corresponding antenna feed and a short-circuit loop configured to generate the respective radiated electric fields orthogonal to each other.

14. The method according to claim 13, wherein, The short-circuit ring of the first part and the short-circuit ring of the second part are offset from each other by 90 degrees.

15. The method according to claim 13, wherein, The antenna feed line of the first part is offset by 90 degrees relative to the short-circuit ring of the first part.

16. The method according to claim 11, wherein, The goggles include a first optical component and a second optical component, wherein the first portion surrounds the first optical component and the second portion surrounds the second optical component.

17. The method according to claim 16, wherein, The first part and the second part share a common ground plane.

18. The method according to claim 17, wherein, The frame has a nose bridge extending between the first optical component and the second optical component, wherein the common ground plane extends along the nose bridge.

Images