Eyeglasses with aperture-tuned dielectric-loaded multiband antenna

Abstract

An eyeglass includes a dipole antenna having a first leg and a second leg, wherein the first leg includes at least a portion of a battery, such as a conductive housing of the battery. An antenna feed is coupled to the dipole antenna between the second leg and the battery. The second leg may include a flexible printed circuit (FPC) and is an active leg. The second leg has a first portion and a second portion. The first portion and the second portion may have the same physical length. The first portion may be dielectrically loaded with a material with a high dielectric constant load, and the second portion may be dielectrically loaded with a material with a low dielectric constant load.

Description

[0001] Cross-references to related applications

[0002] This application claims priority to U.S. Application No. 17 / 363,582, filed June 30, 2021, the contents of which are incorporated herein by reference in their entirety. Technical Field

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

[0004] Today’s portable eyewear devices (such as smart glasses, headwear, and headgear) integrate cameras, see-through displays, and antennas. Attached Figure Description

[0005] The accompanying drawings depict one or more implementations by way of example only and not 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 an eyeglasses device, showing a right optical component with an image display, and applying field of vision adjustment to a user interface presented on the image display based on detected head or eye movements of the user.

[0007] Figure 1B It depicts a visible light camera, a head movement tracker for tracking the head movements of a user of a glasses device, and a circuit board. Figure 1A A cross-sectional view of the top of the temple of the eyeglasses assembly;

[0008] Figure 2A This is a rear view of an example hardware configuration of an eyeglasses device used in a system for identifying the user of the eyeglasses device, which includes an eye scanner on the frame;

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

[0010] Figure 2C and Figure 2D This is a rear view of an example hardware configuration for the glasses device, including two different types of image displays.

[0011] Figure 3 The diagram depicts an infrared emitter, an infrared camera, a front frame, a rear frame, and a circuit board. Figure 2A Rear perspective view of the eyeglasses device;

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

[0013] Figure 5 The illustration shows the detection of eye gaze direction;

[0014] Figure 6 The illustration shows the detection of eye position;

[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 The diagram illustrates a dipole antenna with a first leg and a second leg.

[0017] Figure 8B The illustration shows a dipole antenna that can be incorporated into eyeglasses, wherein the first antenna leg is widened and reuses the printed circuit board (PCB) in the eyeglasses.

[0018] Figure 8C The diagram illustrates a reconfiguration to maximize antenna radiation efficiency. Figure 8B The mechanical architecture of the dipole antenna implementation shown;

[0019] Figure 8D The diagram illustrates dipole antenna legs #1 and #2 with appropriate electrical lengths for the antenna feed at frequencies f1 and f2.

[0020] Figure 8E The figure shows a dipole antenna with resonant response at frequencies f1 and f2;

[0021] Figure 8F The diagram shows leg #1, which has a low-pass filter connected in series between the battery and the flexible printed circuit to establish the electrical length of leg #1 as seen from the antenna feed.

[0022] Figure 8G The diagram shows leg #2, which also has a series low-pass filter;

[0023] Figure 8H The illustration shows legs #2 for f1 and legs #2 for f2 with the same physical length; however, one of them is dielectrically loaded with a high dielectric constant material (such as ceramic), and the other is dielectrically loaded with a low dielectric constant material.

[0024] Figure 8I The diagram illustrates a dipole antenna;

[0025] Figure 9 The diagram illustrates the block diagram of the electronic components of the eyeglasses device; and

[0026] Figure 10 This is a flowchart of the operation of a dipole antenna. Detailed Implementation

[0027] The examples described herein include eyeglasses with an aperture-tuned dielectric-loaded multiband dipole antenna. In one example, a multiband antenna with a small physical volume achieves excellent radiation characteristics in a compact volume by using two legs of an aperture-tuned antenna and different dielectric loads to achieve multiple frequency band resonances. The antenna has a first leg and a second leg, wherein the first leg includes at least a portion of a battery, such as a battery housing. An antenna feed is coupled to the dipole antenna between the second leg and the battery. The second leg may include a flexible printed circuit (FPC), and the second leg is an active leg. The second leg has a first portion and a second portion. The first portion and the second portion may have the same physical length. The first portion may be dielectrically loaded with a material with a high dielectric constant load, and the second portion may be dielectrically loaded with a material with a low dielectric constant load.

[0028] 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 text 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.

[0029] In the following detailed description, numerous specific details are illustrated by way of example to provide a thorough understanding of the teachings. However, it will be clear to those skilled in the art that the teachings can be practiced without such details. In other examples, well-known methods, processes, components, and circuits have been described at a relatively high level without detail to avoid unnecessarily obscuring aspects of the teachings.

[0030] As used herein, the term "coupled" refers to any logical, optical, physical, or electrical connection, link, etc., whereby 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.

[0031] The orientations of the eyeglasses, associated components, and any complete device combining an eye scanner and a camera (such as those shown in any of the figures in the accompanying drawings) are given by way of example only for illustration and discussion purposes. In operation for a particular variable optical processing application, the eyeglasses may be oriented in any other direction suitable for the specific application of the eyeglasses, such as up, down, side, or any other orientation. Furthermore, within the scope used herein, any directional terms (such as front, back, inside, outside, 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 orientation or orientation of any optical component or visual component constructed as otherwise described herein.

[0032] Now refer in detail to the examples shown in the accompanying drawings and discussed below.

[0033] Figure 1A This is a side view of an example hardware configuration of eyeglasses device 100, which includes an image display 180D. Figure 2A The right optical component 180B. The eyeglass device 100 includes multiple visible light cameras 114A, 114B forming a stereo camera. Figure 7 The right visible light camera 114B is located on the right temple portion 110B.

[0034] Left visible light camera 114A and right visible light camera 114B have image sensors sensitive to wavelengths within the visible light range. Each of the visible light cameras 114A and 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 and 114B pick up electromagnetic radiation and generate images. Examples of such visible light cameras 114A and 114B include high-resolution complementary metal-oxide-semiconductor (CMOS) image sensors and video graphics array (VGA) cameras, such as 640p (e.g., 640x480 pixels with a total of 0.3 megapixels), 720p, or 1080p, etc. Image sensor data from the visible light cameras 114A and 114B, along with geographic location data, is captured, digitized by an image processor, and stored in memory.

[0035] To provide stereoscopic vision, visible light cameras 114A and 114B 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 images. The image processor 912 includes circuitry for receiving signals from the visible light cameras 114A and 114B and processing those signals from the visible light cameras 114A and 114B into a format suitable for storage in memory. Figure 9(Element 934). The timestamp can be added by the image processor 912 or another processor controlling the operation of the visible light cameras 114A and 114B. The visible light cameras 114A and 114B allow the stereo camera to simulate human binocular vision. The stereo camera provides images based on two captured images, respectively from the visible light cameras 114A and 114B with the same timestamp. Figure 7 Components 758A and 758B are used to reproduce three-dimensional images. Figure 7 The ability of element 715. Such a 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, 758B are generated at a given moment—one image from each of the left visible light camera 114A and the right visible light camera 114B. Depth perception is provided via optical components 180A, 180B when (e.g., by image processor 912) a pair of generated images 758A, 758B from coverage angles 111A, 111B of the forward-facing left visible light camera 114A and right visible light camera 114B are stitched together.

[0036] In the example, the user interface field of view adjustment system includes an eyeglass device 100. The eyeglass device 100 includes a frame 105, a right temple portion 110B, and a perspective image display 180D. Figures 2A-2B The right temple portion 110B extends from the right lateral side 170B of the frame 105, and the perspective image display 180D includes optical components 180B to present a graphical user interface to the user. The eyeglasses device 100 includes a left visible light camera 114A attached to the frame 105 or the left temple portion 110A to capture a first image of the scene. The eyeglasses device 100 further includes a right visible light camera 114B, which is attached to the frame 105 or the right temple portion 110B to capture (e.g., simultaneously with the left visible light camera 114A) a second image of the scene that overlaps with the first image portion. Although in Figures 1A to 1B Not shown, but the user interface field of view adjustment system further includes, for example, in the eyeglasses device 100 itself or in another part of the user interface field of view adjustment system: a processor 932, which is coupled to the eyeglasses device 100 and connected to the visible light cameras 114A, 114B; a memory 934, which is accessible by the processor 932, and programming in the memory 934.

[0037] Although Figure 1A Not shown in the image, the glasses device 100 also includes a head movement tracker (…). Figure 1B Component 109) or eye movement tracker ( Figure 2BComponent 213). The eyeglass device 100 further includes optical components 180A, 180B, a perspective image display 180C, 180D for presenting the displayed image sequence, and an image display driver ( Figure 9 The image display driver (942) is coupled to the perspective image displays 180C and 180D of the optical components 180A and 180B to control the image displays 180C and 180D of the optical components 180A and 180B to present the displayed image sequence 715, which is further described in detail below. The eyeglasses device 100 further includes a memory 934 and a processor 932, which has access to the image display driver 942 and the memory 934. The eyeglasses device 100 further includes programming in the memory (…). Figure 9 (Element 934). The execution of programming by the processor 932 configures the eyeglass device 100 to perform functions, including the function of presenting an initial displayed image of the displayed image sequence via the perspective image displays 180C, 180D, 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).

[0038] The execution of the programming by the processor 932 further configures the glasses device 100 to detect the movement of the user of the glasses device by: (i) via a head movement tracker ( Figure 1B (i) Component 109) tracks the user's head movement, or (ii) via an eye movement tracker. Figure 2B , Figure 5 Element 213) tracks the eye movements of the user's eyes in the glasses device 100. Processor 932 further configures the glasses device 100 to determine visual field adjustment for an initial field of view of the initially displayed image based on the detected user movement. Visual field adjustment includes a continuous field of view corresponding to a continuous head direction or a continuous eye direction. Processor 932 further configures the glasses device 100 to generate a sequence of continuously displayed images based on the visual field adjustment. Processor 932 further configures the glasses device 100 to present the continuously displayed images via the perspective image displays 180C and 180D of optical components 180A and 180B.

[0039] Figure 1B It depicts the right visible light camera 114B, the head movement tracker 109, and the circuit board. Figure 1AThe image shows a top cross-sectional view of the temple of the eyeglasses device 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 lateral side 170A. As shown, the eyeglasses device 100 includes the right visible light camera 114B, a circuit board (which may be a flexible PCB 140), and a battery 142 configured to power the eyeglasses 100. A right hinge 226B connects the right temple portion 110B to the right temple portion 125B of the eyeglasses device 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 226B.

[0040] As shown, the eyewear device 100 has a head movement 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 one accelerometer, one gyroscope, and one magnetometer for each of the three axes: a horizontal axis (X) for left-right movement, a vertical axis (Y) for top-to-bottom movement, and a depth or distance axis (Z) for up-down movement. The accelerometer detects the gravity vector. The magnetometer defines rotation in the magnetic field (e.g., facing south, north, etc.) like a compass that generates a direction reference. 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 eyeglasses device 100, or the user wearing the eyeglasses device 100.

[0041] The eyewear device 100 detects user movement by tracking head movement of the user's head via a head movement tracker 109. Head movement includes changes in head orientation on a horizontal axis, a vertical axis, or a combination thereof from an initial head orientation during the presentation of an initial displayed image on an image display. In one example, tracking user head movement via the head movement tracker 109 includes measuring an initial head orientation (e.g., lateral or diagonal movement) on a horizontal axis (e.g., the X-axis), a vertical axis (e.g., the Y-axis), or a combination thereof via an inertial measurement unit 109. Tracking user head movement via the head movement tracker 109 further includes measuring continuous head orientation on a horizontal axis, a vertical axis, or a combination thereof via the inertial measurement unit 109 during the presentation of the initial displayed image.

[0042] Tracking head movement of the user's head via head movement tracker 109 further 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 glasses device 100 further includes determining, in response to head movement of the user's head tracked via head movement 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 "approximately" means a deviation of ±10%.

[0043] Changes along the horizontal axis slide 3D objects, such as characters, Bitmojis, and app icons, into and out of the field of view by, for example, hiding, unhiding, or otherwise adjusting the visibility of the 3D 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 glasses device 100 can be turned off when the user looks downward along the vertical axis.

[0044] The right temple portion 110B includes the temple body 211 and the temple cap. Figure 1B The temple cap is omitted in the cross-section. Arranged within the right temple portion 110B are interconnected circuit boards, such as PCBs or flexible PCBs, including controller circuitry for the right visible light camera 114B, a microphone 130, a speaker 132, low-power wireless circuitry, and an antenna (e.g., for use via Bluetooth). TM (Short-range wireless network communication) and high-speed wireless circuits and antennas (e.g., for wireless LAN communication via WiFi and positioning via GPS).

[0045] The right visible light camera 114B is coupled to or disposed on the flexible PCB 240 and covered by a visible light camera cover lens, which is aligned through an opening formed in the right temple portion 110B. In some examples, the frame 105 connected to the right temple portion 110B includes an opening for the visible light camera cover lens. The frame 105 includes a forward-facing portion configured to face away from the user's eye. The opening for the visible light camera cover lens is formed on and extends through the forward-facing portion. In this example, the right visible light camera 114B has an outward-facing coverage angle 111B that provides the line of sight or viewing angle for the right eye of the user of the eyewear device 100. The visible light camera cover lens may also be adhered to the outward-facing surface of the right temple portion 110B, wherein the opening is formed at an outward-facing coverage angle but in a different outward direction. This coupling may also be indirect coupling via an intervening component.

[0046] 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 sequential display 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 sequential display image. The first and second background scenes partially overlap to present a three-dimensional observable area of ​​the sequential display image.

[0047] A flexible PCB 140 is disposed inside the right temple portion 110B and coupled to one or more other components housed in the right temple portion 110B. Although shown as being formed on a circuit board on the right temple portion 110B, the right visible light camera 114B may be formed on a circuit board on the left temple portion 110A, temple portions 125A, 125B, or frame 105.

[0048] Figure 2A This is a rear view of an example hardware configuration of an eyeglasses device 100, which includes an eye scanner 113 on a frame 105 for use in a system that determines the eye position and gaze direction of the wearer / user of the eyeglasses device 100. Figure 2A As shown, the glasses device 100 is configured for wear by a user, who... Figure 2A The example shown is eyeglasses. The eyeglasses device 100 can take other forms and can be combined with other types of frames, such as headbands, headphones, or helmets.

[0049] In the example of eyeglasses, the eyeglass device 100 includes a frame 105, which includes a nose bridge 106 adapted to fit the user's nose and connected to a left edge 107A via a right edge 107B. The left edge 107A and right edge 107B include corresponding apertures 175A, 175B for holding respective optical elements 180A, 180B (such as lenses and perspective displays 180C, 180D, etc.). As used herein, the term lens is intended to refer to a transparent or translucent sheet of glass or plastic having curved and flat surfaces that cause light to converge / diverge or cause little or no convergence / divergence.

[0050] Although shown as having two optical elements 180A, 180B, the eyeglass device 100 may include other arrangements, such as a single optical element depending on the application of the eyeglass device 100 or the intended user. As further shown, the eyeglass device 100 includes a left temple portion 110A adjacent to the left lateral side 170A of the frame 105 and a right temple portion 110B adjacent to the right lateral side 170B of the frame 105. The temple portions 110A, 110B may be integrated into the frame 105 on the respective sides 170A, 170B (as shown) or implemented as separate components attached to the frame 105 on the respective sides 170A, 170B. Alternatively, the temple portions 110A, 110B may be integrated into temples (not shown) attached to the frame 105.

[0051] 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., 640x480 pixels with a total of 0.3 megapixels), where the blue filter has been removed. The infrared emitter 115 and the infrared camera 120 are located together on the frame 105, for example, both are shown connected to the upper part of the left side edge 107A. One or more of the left temple portion 110A and the right temple portion 110B, or the frame 105, 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.

[0052] 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 temple portions 110A, 110B, or vice versa. The infrared emitter 115 can be substantially attached anywhere on the frame 105, the left temple portion 110A, or the right temple portion 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 portion 110A, or the right temple portion 110B to capture at least one reflection variation in the emitted pattern of infrared light.

[0053] Infrared emitter 115 and infrared camera 120 are arranged to face inward toward the user's eyes using part or all of the eye's field of vision in order to identify the corresponding eye position and gaze direction. For example, infrared emitter 115 and infrared camera 120 are positioned directly in front of the eyes, in the upper part of frame 105, or in the temple portions 110A, 110B at either end of frame 105.

[0054] Figure 2B This is a rear view of an example hardware configuration of another eyeglass device 200. In this example configuration, the eyeglass 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 of the eye scanner 213, may be located on the left temple 210A and other locations on the eyeglass 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].

[0055] Similar to Figure 2A The eyeglasses 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 edge 107A and the right edge 107B include corresponding openings for holding corresponding optical elements 180A, 180B, the optical elements 180A, 180B including perspective displays 180C, 180D.

[0056] Figures 2C to 2D This is a rear view of an example hardware configuration of eyeglasses device 100, which includes two different types of perspective image displays 180C and 180D. In one example, these perspective image displays 180C and 180D of the optical components 180A and 180B include integrated image displays. Figure 2CAs shown, optical components 180A and 180B include suitable display matrices 180C and 180D 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 and 180B also include one or more optical layers 176, which may include lenses, optical coatings, prisms, mirrors, waveguides, optical strips, and other optical components in any combination. 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 to the user's eyes. The prisms of optical layers 176A-N extend over all or at least a portion of corresponding apertures 175A and 175B formed in the left edge 107A and right edge 107B to allow the user to see the second surface of the prism when the user's eyes are viewing through the corresponding left edge 107A and right edge 107B. The first surface of the prism of optical layers 176A-N faces upward from frame 105, and the display matrix covers the prism, such that photons and light emitted by the display matrix permeate the first surface. The prism is sized and shaped such that light is refracted within the prism and guided by the second surface of the prism of optical layers 176A-N toward the user's eye. In this respect, the second surface of the prism of optical layers 176A-N may be convex to direct light toward the center of the eye. The prism may optionally be sized and shaped to magnify the image projected by perspective image displays 180C, 180D, and light travels through the prism such that the image viewed from the second surface is larger than the image emitted by perspective image displays 180C, 180D in one or more dimensions.

[0057] In another example, the perspective image displays 180C and 180D of the optical components 180A and 180B include, for example... Figure 2D The projection image display shown is illustrated. Optical components 180A and 180B 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 arranged in or above one of the temples 125A and 125B of the eyeglass assembly 100. Optical components 180A and 180B include one or more optical bands 155A-N spaced apart across the width of the lens of optical components 180A and 180B or across the depth between the front and rear surfaces of the lens.

[0058] When photons projected by the laser projector 150 travel through the lenses of optical components 180A and 180B, they encounter optical bands 155A-N. When a particular photon encounters a particular optical band, it 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 and 180B, the eyeglass device 100 may include other arrangements, such as single or three optical components, or the optical components 180A and 180B may be arranged differently depending on the application of the eyeglass device 100 or the intended user.

[0059] like Figures 2C to 2D As further shown, the eyeglasses device 100 includes a left temple portion 110A adjacent to the left lateral side 170A of the frame 105 and a right temple portion 110B adjacent to the right lateral side 170B of the frame 105. The temple portions 110A and 110B can be integrated into the frame 105 on the respective lateral sides 170A and 170B (as shown) or implemented as separate components attached to the frame 105 on the respective sides 170A and 170B. Alternatively, the temple portions 110A and 110B can be integrated into temple portions 125A and 125B attached to the frame 105.

[0060] In one example, the perspective image display includes a first perspective image display 180C and a second perspective image display 180D. The eyeglass device 100 includes a first aperture 175A and a second aperture 175B, which hold corresponding first optical components 180A and 180B. The first optical component 180A includes the first perspective image display 180C (e.g., ...). Figure 2C The display matrix or optical strip and projector). The second optical component 180B includes a second perspective image display 180D, for example, 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 of approximately 15° to 30° (and more specifically 24°) measured horizontally, vertically, or diagonally. 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 a first image display and a second image display.

[0061] 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 image display 180C and right image display 180D of the optical components 180A, 180B. “Coverage angle” describes the angular range that the lens of the visible light camera 114A, 114B or the infrared camera 220 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 the user of the eyeglass device 100 can see through his or her eyes via the displayed images presented on the left image display 180C and right image display 180D of the optical components 180A, 180B. The image display 180C of the optical components 180A and 180B can have a field of view with a coverage angle between 15° and 30° (e.g., 24°) and a resolution of 480×480 pixels.

[0062] Figure 3 It shows Figure 2A The rear perspective view of the eyeglasses device 100. The eyeglasses device 100 includes an infrared emitter 215, an infrared camera 220, a front frame 330, a rear frame 335, and a circuit board 340. Figure 3 As can be seen, the upper part of the left edge of the frame of the eyeglasses device 100 includes a front part 330 and a rear part 335. An opening for the infrared emitter 215 is formed on the rear part 335.

[0063] As shown in the circumferential cross-section 4 in the upper middle portion of the left side edge of the frame, the 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 portion 110A is also shown in more detail attached to the left temple portion 325A via the left hinge 326A. 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 326A.

[0064] Figure 4 Is passing through and Figure 3 The cross-sectional view of the eyeglasses device, corresponding to the infrared emitter 215 and the frame, is shown in the surrounding cross-section 4. Figure 4The cross-section shows multiple layers of the eyeglass device 100, as illustrated, with the frame comprising a front frame portion 330 and a rear frame portion 335. A flexible PCB 340 is disposed on the front frame portion 330 and connected to the rear frame portion 335. An infrared emitter 215 is disposed on the flexible PCB 340 and covered by an infrared emitter-covered lens 445. For example, the infrared emitter 215 is reflowed to 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.

[0065] The rear portion 335 of the frame includes an infrared emitter opening 450 for an infrared emitter overlay lens 445. The infrared emitter opening 450 is formed on the rearward-facing side of the rear portion 335, which is configured to face inward toward the user's eyes. In this example, the flexible PCB 340 can be attached to the front portion 330 of the frame via a flexible PCB adhesive 460. The infrared emitter overlay lens 445 can be attached to the rear portion 335 of the frame via an infrared emitter overlay lens adhesive 455. This coupling can also be indirect via an intervening component.

[0066] In the example, processor 932 uses eye tracker 213 to determine, for example, Figure 5 The wearer's eye 234 shown in the diagram has an eye gaze direction 230, and as shown in the diagram... Figure 6 The wearer's eye 234 is shown in the eye window, with the eye 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 eye 234 to determine the gaze direction 230 of the pupil 232 of the eye 234 and the eye position 236 relative to the perspective display 180D.

[0067] Figure 7 An example of capturing visible light using a camera is depicted. Visible light is captured by a left visible light camera 114A, with the field of view 111A of the left visible light camera serving as the left raw image 758A. Visible light is captured by a right visible light camera 114B, with the field of view 111B of the right visible light camera serving as the right raw image 758B. Based on the processing of the left raw image 758A and the right raw image 758B, the processor 932 generates a three-dimensional depth map 715 of a three-dimensional scene (hereinafter referred to as an image) including the overlapping fields of view 713. Aperture-tuned medium-loaded multi-band antenna.

[0068] Highly efficient and multi-band antenna radiation within the smallest possible physical volume is a strong desire for the Glasses 100. An efficient radiator provides significantly enhanced communication range and reduces overall power consumption. The multi-band antenna enables data transmission across multiple frequencies, which in turn enables increased data throughput. However, in consumer electronic devices including the Glasses 100, antenna design is subject to trade-offs favoring fashion and style, and is typically designed with an electrically very small volume. Therefore, antenna engineering again utilizes existing metals in the device to avoid inefficient and complex RF front-ends to meet radiation specifications.

[0069] Derivatives of one of these two basic antenna types are frequently used in consumer electronics, loop antennas, or dipole / monopole antennas. The most common dipole antenna is the 800. Figure 8A It is described in its ideal form. It is important to note that dipole antennas are called "electrical type" antennas because their dominant radiation mode is TM. 10 This means that the dipole antenna 800 generates an electric field orthogonal to the propagation direction. From Figure 8A In this context, the sum of l1 and l2 (i.e., the total length) determines its supporting TM. 10 The first resonant frequency of the dipole antenna 800 in this mode. The ratio of l1 to l2 determines the input impedance of the dipole antenna 800 at this resonant frequency. As an example, a self-resonant™ dipole antenna 800 designed for operation of a 1.575 GHz Global Navigation Satellite System (GNSS) in air is described. 10 The required length is l1 = l2 = approximately 4.56 cm. This length is too long for wearable consumer electronics devices (such as Glasses 100) to be used solely for the antenna element itself.

[0070] refer to Figure 8B The dipole antenna 810 is integrated into the glasses 100 shown. The first antenna leg l1 is widened and reuses the existing main PCB 140 in the glasses 100. The second antenna leg l2 is bent to save space while maintaining the same support length. One or both legs can be encapsulated in a low-loss dielectric material to further reduce the required length of the dipole antenna 810, to operate a technique known as dielectric load.

[0071] Augmented reality wearable devices, including Glasses 100, differ mechanically from most consumer electronics on the market. Typically, the bucket method is used to assemble most smart electronic devices available to consumers today. This includes devices such as phones, watches, speakers, and even thermostats. In most cases, a plastic or metal casing forms the bucket, and then the battery and main PCB are housed inside, with the bucket covered by a display. Figure 8BThe architecture of the dipole antenna 810 with this mechanical structure shown relies on the main PCB to achieve effective radiation and places the bent antenna legs on one of the opposite edges.

[0072] However, for augmented reality wearable devices including glasses 100, Figure 8B Such a mechanical architecture is not necessarily feasible. The display needs to be optically transparent and positioned in front of the wearer's eyes. Therefore, the battery and PCB cannot be stacked with the display. Since these devices are also fashion accessories, the battery and main PCB cannot be easily co-located, as the required space would be too wide or too thick. Typically, the main PCB, containing critical components such as silicon-on-a-chip (SOC) or a wireless RF front end, resides on a narrow but longer PCB within the temple portion 110. The ideal location for the battery 142 is at the rear tip of the temple portion 110, as this helps balance the weight of the optical system at the front of the glasses 100. Figure 8C This architecture is illustrated in the figure.

[0073] For in Figure 8C The mechanical structure shown is in Figure 8B The dipole antenna implementation shown has been reconfigured to maximize antenna radiation efficiency, as follows: Figure 8D The dipole antenna 820 is shown in the diagram. The leg #1 of the dipole antenna 820 is the housing 830 of the battery 142, such as a metal shield on the battery housing, or it can be a longer electrical length established by the electrically connected battery housing, flexible printed circuit (FPC) 840, and main PCB 140. In either case, the dipole antenna 820 uses the battery 142 as one (or at least part) of the antenna leg #1. Therefore, it is wise to ensure that in the RF band, the terminals of the battery 142 are all connected to each other, essentially RF short-circuited, but DC disconnected.

[0074] Achieving multi-band radiation is crucial for antenna systems to be deployed for augmented reality wearable devices (including glasses 100). The dipole antenna 820 exhibits resonant responses at frequencies f1 and f2, as shown in... Figure 8E As shown in the figure.

[0075] from Figure 8D One method to achieve this dual-band radiation in the architecture shown is to use aperture tuning to ensure that dipole antenna legs #1 and #2 present appropriate electrical lengths to the antenna feed 850 at frequencies f1 and f2, as shown in Figure 8E As shown in the dipole antenna 870. Focusing on leg #1, the electrical length is controlled by introducing a low-pass filter 860 in series between battery 142 and FPC 840, as in... Figure 8EAs shown in the diagram, when the low-pass filter 860 allows them to pass through, the battery DC energy and RF signal at frequency f1 can still flow from battery 142 through the series low-pass filter 860 to the main PCB 140. As can be seen, l f1,1 This is the length of leg #1 at f1. However, for the higher frequency f2, the metal ends at the battery casing 830, so the length of leg #1 of the dipole antenna 870 is only l. f2,1 Therefore, the temple portion 110 supports dual-band operation, where each band operates in basic TM... 10 Operating in mode. By ensuring the correct placement and value selection of the low-pass filter 860 accordingly, this antenna design can be extended and cascaded to create multiple different electrical lengths throughout the temple section 110.

[0076] The second leg #2 of the dipole antenna is referred to as the active leg. To support multi-band operation, the active leg #2 provides different electrical lengths to the antenna feed. A low-pass filter 860 is also used in the active leg #2 (see...). Figure 8G ), making l f1,2 and l f2,2 It has different electrical lengths. This dipole antenna design can be extended and cascaded along the active leg #2 to create multiple different electrical lengths throughout the antenna element by correspondingly ensuring the correct placement and value selection of the low-pass filter 860.

[0077] As mentioned earlier, it is desirable to make the lengths of the corresponding outriggers equal, i.e., l f1,1 =l f1,2 And l f2,1 =l f2,2 Unfortunately, in eyeglasses, it is generally not possible to make the physical length of the active arm (leg #2) equal to the length of leg #1, which in this example is located in the temple portion 110. As can be seen, leg #1 is co-located with other functional components of the eyeglasses 100, such as battery 142, FPC 840, and main PCB 140, etc. However, leg #2 is dedicated solely to the dipole antenna, and therefore its size is to be minimized as much as possible. This design trend abandons the l1:l2 ratio and essentially increases the input impedance of the dipole antenna, thus limiting its bandwidth.

[0078] Fortunately, antenna legs #1 and #2 only need to be electrically equal, not physically equal. This is achieved through the dielectric load of leg #2 and by altering the effective dielectric constant around it. There is an inverse square root relationship between the effective dielectric constant and the reduction that can be achieved in length. For example, if the effective relative dielectric constant around leg #2 can be increased to 4 through dielectric load, the physical length of leg #2 can be half the length of leg #1, and they are still electrically equivalent in length. However, the trade-off of dielectric load is that it introduces losses associated with the material, and if the load is high (e.g., a relative permittivity greater than 4), RF energy will want to remain inside the load material and not radiate outwards. The direct implication of these is a reduction in radiation bandwidth and radiation efficiency. Therefore, the load should be kept to a minimum whenever possible.

[0079] Since the physical length available for the active antenna leg #2 is fixed and finite, this disclosure uses different dielectric loads for each frequency band supported by the dipole antenna to maximize the performance that can be extracted from the available physical length. As seen in the dual-band example shown in the previous figure, in Figure 8H An example of a dipole antenna 880 is shown. In this example, leg #2 has two parallel sections as shown, leg #2 for f1 and leg #2 for f2, and each section has the same physical length. However, one part of leg #2 is loaded with a high dielectric constant material 882 (such as ceramic), and the other part of leg #2 is loaded with a low dielectric constant material 884 (such as the material of the PCB 140 supporting the two sections of leg #2 shown). For example, the effective dielectric constant seen by leg #2 at f1 is 36, and the effective dielectric constant seen by leg #2 at f2 is 4. This means that leg #2 for f1 is electrically three times longer ((36 / 4) square root = 3), and the leg allows resonance at f1, which is 1 / 3 (1 / 3rd) of the resonance at f2.

[0080] The low-pass filter 860 (such as a simple inductor) of the first section of the feed leg #2 and the high-pass filter 886 (which could be a simple capacitor) of the second section of the feed leg #2 isolate the two sections of the leg #2, as they are both fed from the same common feed line 888 attached to the antenna excitation. These filters 860, 886 are essentially responsible for the aperture adjustment of the individual lengths of these legs. See reference... Figure 8F The discussion and as Figure 8I As shown, for this specific example, the length of leg #1 also needs to correspond to the ratio of f1 to f2. As described in this disclosure, the number of supported frequency bands can be increased by adding antenna legs.

[0081] Figure 9A high-level functional block diagram is depicted, including example electronic components arranged in eyeglasses 100 / 200. The illustrated electronic components include a processor 932, a memory 934, and a perspective image display 180C, 180D including an embedded antenna 880.

[0082] The memory 934 includes instructions for execution by the processor 932 to implement the functions of the glasses 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 glasses 100 / 200, and communicates with external devices via a wireless connector.

[0083] The user interface adjustment system 900 includes a wearable device having an eye movement tracker 213 (e.g., in...). Figure 2B The glasses 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 glasses device 00 using both a low-power wireless connector 925 and a high-speed wireless connector 937. The mobile device 990 is connected to the server system 998 and a network 995. The network 995 can include any combination of wired and wireless connections.

[0084] The eyeglasses device 100 includes at least two visible light cameras 114A and 114B (one visible light camera associated with the left side 170A and one visible light camera associated with the right side 170B). The eyeglasses device 100 further includes two perspective image displays 180C and 180D (one associated with the left side 170A and one associated with the right side 170B) of optical components 180A and 180B. The eyeglasses device 100 also includes a thermal sensor 940, 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 eyeglasses device 100 / 200 are located on one or more circuit boards, such as PCBs or flexible PCBs, in the temple portions 110A and 110B, as previously described. Alternatively or additionally, the depicted components may be located in the temples, frames, hinges, or bridge of the eyeglasses device 100. The left visible light camera 114A and the right visible light camera 114B 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.

[0085] The eye movement tracking program implements user interface field-of-view adjustment instructions, including instructions for causing the glasses device 100 to track the eye movements of the user's eyes via the eye movement tracker 213. Other implemented instructions (functions) cause the glasses device 100 to determine an initial field-of-view adjustment for an initial 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 images are generated via the user interface as a visible output to the user. This visible output appears on the perspective image displays 180C and 180D of optical components 180A and 180B, which are driven by an image display driver 942 to present the displayed image sequence, including an initial displayed image with an initial field of view and sequentially displayed images with consecutive fields of view.

[0086] As in Figure 9 As 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 and 180B 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 glasses device 100. The high-speed processor 932 includes the processing resources required for managing high-speed data transmission over a high-speed wireless connector 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 for the glasses device 100, and this 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 glasses device 100, manages the data transmitted using 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 known herein as Wi-Fi. In other examples, other high-speed communication standards can be implemented by the high-speed wireless circuit 936.

[0087] The low-power wireless circuit 924 and high-speed wireless circuit 936 of the eyeglass device 100 may include short-range transceivers (e.g., UWB or Bluetooth). TMThe mobile device 990 (including a transceiver that communicates via a low-power wireless connector 925 and a high-speed wireless connector 937) and a wireless wide-area, local area, or wide-area transceiver (e.g., cellular or WiFi) including an antenna 880. The mobile device 990 (including a transceiver that communicates via a low-power wireless connector 925 and a high-speed wireless connector 937) can be implemented using the architectural details of the glasses device 100, as can other components of the network 995.

[0088] Memory 934 includes any storage device capable of storing various data and applications, among other things, including color mapping, camera data generated by the left visible light camera 114A and the right visible light camera 114B and image processor 912, and images generated by image display driver 942 displayed on perspective image displays 180C and 180D of optical components 180A and 180B. While memory 934 is shown as integrated with high-speed circuitry 930, in other examples, memory 934 may be a separate, independent element of the eyeglasses 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 initiate high-speed processor 932 whenever a read or write operation involving memory 934 is required.

[0089] Server system 998 may be one or more computing devices as part of a service or network computing system. For example, one or more computing devices may include a processor, memory, and a network communication interface for communicating with mobile device 990 and glasses device 100 via network 995. Glasses device 100 is connected to a host computer. For example, glasses device 100 may be paired with mobile device 990 via high-speed wireless connector 937 or connected to server system 998 via network 995.

[0090] The output components of the eyeglasses device 100 include visual components, such as... Figures 2C to 2DThe optical components 180A to 180B described herein include a left image display 180C and a right image display 180D (e.g., a display, such as a liquid crystal display (LCD), a plasma display panel (PDP), a light-emitting diode (LED) display, a projector, or a waveguide, etc.). The image displays 180C and 180D of the optical components 180A and 180B are driven by an image display driver 942. The output components of the eyeglasses device 100 also include acoustic components (e.g., speakers), haptic components (e.g., vibration motors), other signal generators, etc. The input components of the eyeglasses device 100, the mobile device 990, and the 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.

[0091] The eyeglasses 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 eyeglasses 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 eyeglasses device 100 may take other forms and may be combined with other types of frames, such as headbands, headphones, or helmets.

[0092] For example, the biometric components of the user interface field-of-view adjustment component 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 identifying a person (e.g., voice recognition, retinal identification, facial identification, fingerprint identification, or EEG-based identification). 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 components (e.g., altimeters or barometers that detect air pressure from which altitude can be derived), orientation sensor components (e.g., magnetometers), and the like. Such positioning system coordinates can also be received from the mobile device 990 via wireless connectors 925, 937 through low-power wireless circuitry 924 or high-speed wireless circuitry 936.

[0093] In some examples, an "application" or "applications" is a program that performs functions defined in a program. One or more applications can be created using different programming languages, 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) use Android. 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 operating system (such as a 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.

[0094] Figure 10 This is a flowchart 1000 illustrating the operation of the dipole antenna 880. These blocks do not need to be executed sequentially, and processing via the antenna 880 and wireless communication can be performed simultaneously.

[0095] At box 1002, the dipole antenna 880 is excited by two RF signals. The first RF signal at frequency f1 and the second RF signal at frequency f2 are routed to the antenna feed 850.

[0096] At box 1004, the first RF signal at frequency f1 is routed to the two legs of dipole antenna 880. The RF energy at f1 utilizes the entire length l of leg #1. f1,1 The longer electrical section of outrigger #2 (i.e., l) f1,2 ).

[0097] At box 1006, the second signal at frequency f2 is routed to the two legs of dipole antenna 880. The RF energy of f2 is blocked by a low-pass filter in leg #1 and can only be used by l. f2,1 Physically shorter in length. Similarly, on outrigger #2, the RF energy at f2 can only be utilized using length l. f2,2 .

[0098] It will be understood that the terms and expressions used herein have the general meanings as assigned to them in their respective fields of investigation 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 these entities or actions. The terms "comprises," "comprising," "includes," "including," or any other variations thereof are intended to cover non-exclusive inclusions, such that a process, method, article, or apparatus that includes or comprises a series 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.

[0099] Unless otherwise stated, any and all measurements, values, ratings, locations, amplitudes, dimensions, and other specifications set forth in this specification (including in the appended claims) are approximate and imprecise. Such quantities are intended to have a reasonable range consistent with the function 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%.

[0100] 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 appended claims, the subject matter to be protected depends on fewer features than all the features of any single disclosed example. Therefore, the appended claims are thus incorporated into the detailed description, wherein each claim is independently claimed as a separate subject matter.

[0101] While the foregoing has described what is considered the best model and other examples, it should be understood that different modifications can be made therein, and the subject matter disclosed herein can be implemented in different forms and examples, and can be applied to many applications, of which only a few have been 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 pair of eyeglasses, comprising: frame; Battery; Printed circuit board (PCB); A flexible printed circuit (FPC) that couples the battery to the printed circuit board; A perspective display, supported by the frame and configured to generate images; A dipole antenna configured to communicate wireless signals, wherein the dipole antenna has a first leg and a second leg, the first leg including a portion of the flexible printed circuit and the battery, and the second leg having a first portion and a second portion; Antenna feed, the antenna feed being coupled to the dipole antenna; and A low-dielectric-constant material coupled to the first portion and dielectrically loaded in the first portion, and a high-dielectric-constant material coupled to the second leg and dielectrically loaded in the second portion.

2. The eyeglasses of claim 1, further comprising temples coupled to the frame, wherein, The dipole antenna is disposed inside the temple of the mirror.

3. The eyeglasses according to claim 1, wherein, The first leg and the second leg have different physical lengths but the same electrical length.

4. The eyeglasses according to claim 3, wherein, The low-pass filter is connected in series with the flexible printed circuit.

5. The eyeglasses according to claim 4, wherein, The first leg also includes the printed circuit board.

6. The eyeglasses according to claim 4, wherein, The antenna feed is coupled between the battery and the second leg.

7. The eyeglasses according to claim 1, wherein, The first part and the second part are parallel to each other.

8. The eyeglasses of claim 1, further comprising a low-pass filter coupled between the antenna feed and the first portion of the second leg, and a high-pass filter coupled between the antenna feed and the second portion of the second leg.

9. The eyeglasses according to claim 1, wherein, The second leg is coupled to the battery.

10. The eyeglasses according to claim 9, wherein, The second part of the first leg includes a portion of the printed circuit board.

11. The eyeglasses according to claim 9, wherein, The first portion of the first leg includes the conductive casing of the battery.

12. The eyeglasses of claim 11, comprising a metal strip extending on the housing of the battery.

13. The eyeglasses according to claim 12, wherein, The first part and the second part have the same physical length.

14. A method of using eyeglasses, the eyeglasses having a frame, temples coupled to the frame, a battery, a printed circuit board (PCB), a flexible printed circuit (FPC) coupling the battery to the PCB, a perspective display supported by the frame and configured to generate an image, and a dipole antenna coupled to the temples and configured to communicate wireless signals, wherein, The dipole antenna has a first leg, a second leg having a first portion and a second portion, an antenna feed coupled to the dipole antenna, and a low-dielectric-constant material coupled to the first portion and dielectrically loaded thereon, and a high-dielectric-constant material coupled to the second portion of the second leg and dielectrically loaded thereon. The first leg includes a portion of the flexible printed circuit and the battery. The method includes: The first leg radiates energy at a first frequency; and The second leg radiates energy at a second frequency.

15. The method according to claim 14, wherein, The first leg includes a low-pass filter connected in series with the flexible printed circuit.

16. The method of claim 14, wherein, The first part and the second part are parallel to each other.

17. The method of claim 14, further comprising a low-pass filter coupled between the antenna feed and the first portion of the second leg, and a high-pass filter coupled between the antenna feed and the second portion of the second leg.

18. The method according to claim 14, wherein, The second leg is coupled to the battery.

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