Goggles with shape memory alloy actuators

Abstract

An electronic goggle device having a shape memory alloy (SMA) actuator to apply torque to a temple. The torque presses the temples against the sides of the user's head for fit and comfortable fit. The SMA actuator allows one size of the goggle frame to fit a larger range of users, thereby reducing the number of sizes that the electronic goggle device needs to manufacture.

Description

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority to U.S. application No. 17 / 740,668, filed on May 10, 2022, the contents of which are incorporated herein by reference in their entirety. Technical Field

[0003] The present subject matter relates to an electronic eyewear device, such as smart glasses, having a camera and a see-through display. Background Art

[0004] Electronic eyewear devices available today, such as smart glasses, headgear, and head caps, integrate different electronic components, such as cameras, see-through displays, and antennas, etc. Such devices are designed to fit comfortably and securely on the user's head. Summary of the invention BRIEF DESCRIPTION OF THE DRAWINGS

[0005] The accompanying drawings depict one or more implementations by way of example only and not limitation.In the accompanying drawings, like reference numerals represent like or similar elements.

[0006] Features of the disclosed different implementations will be readily understood from the following detailed description, with reference to the accompanying drawings. Reference numerals are used in this specification and in the multiple views of the drawings with each element. When multiple similar elements are present, a single reference numeral may be assigned to the similar elements, with an additional letter indicating the specific element.

[0007] Unless otherwise indicated, the various elements shown in the drawings are not drawn to scale. The sizes of various elements may be exaggerated or reduced for clarity. Several drawings depict one or more implementations and are presented by way of example only and should not be construed as limiting. The drawings include the following:

[0008] Figure 1A is a side view of an example electronic goggle device including an optical assembly having an image display;

[0009] Figure 1B yes Figure 1A A top cross-sectional view of the optical components and electronics in a portion of the electronic goggle device shown in;

[0010] Figure 2A is a rear view of an example electronic goggle device;

[0011] Figure 2B is a rear view of an example electronic goggle device;

[0012] Figure 2Cis a rear view of an example electronic goggle device depicting an image display;

[0013] Figure 2D is a rear view of an example electronic goggle device depicting an image display;

[0014] Figure 3 yes Figure 2A A cross-sectional rear perspective view of an electronic goggle device depicting an infrared emitter, an infrared camera, a frame front, a frame back, and a circuit board;

[0015] Figure 4 It passes through Figure 3 A cross-sectional view of an infrared emitter and a frame of an electronic goggle device;

[0016] Figure 5 is a top view illustrating detection of eye gaze direction;

[0017] Figure 6 is a top view illustrating detection of eye positions;

[0018] Figure 7 is a block diagram depicting capturing visible light via a visible light camera;

[0019] Fig. 8A is a top cross-sectional view of a hinge of an electronic eyewear device including a shape memory alloy (SMA) wire actuator, wherein the hinge is bent;

[0020] Figure 8B is in a vertical position Fig. 8A a top cross-sectional view of a hinge;

[0021] Figure 8C is a top cross-sectional view of a hinge of an electronic goggle device including an SMA rotary actuator, wherein the hinge is bent;

[0022] Fig.8D is in a vertical position Figure 8C a top cross-sectional view of a hinge;

[0023] Fig. 9 is a block diagram of the electronic components of the electronic goggle device; and

[0024] Fig.10 A method of securing the temples of an electronic eyewear device to a user's head using SMA actuators. DETAILED DESCRIPTION

[0025] An electronic eyewear device having an SMA actuator for applying torque to the temples. The torque presses the temples against the sides of the user's head for a comfortable and snug fit. The SMA actuator allows one size of eyewear frame to fit a wider range of users, thereby reducing the number of sizes that the electronic eyewear device needs to manufacture.

[0026] Additional objects, advantages and novel features of the examples will be set forth in part in the following description and will become apparent to those skilled in the art upon examination of the following and accompanying drawings, or may be learned by production or operation of the examples. The objects and advantages of the subject matter may be realized and obtained by means of the methods, means and combinations particularly pointed out in the appended claims.

[0027] In the following detailed description, many specific details are set forth by way of example in order to provide a thorough understanding of the relevant teachings. However, it should be clear to those skilled in the art that the present teachings may 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 present teachings.

[0028] 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 imparted to another coupled element. Unless otherwise described, coupled elements or devices are not necessarily directly connected to each other and may be separated by intermediate components, elements or communication media that may modify, manipulate or carry light or signals.

[0029] For purposes of illustration and discussion, the orientation of the electronic goggle device, associated components, and any complete device incorporating an eye scanner and camera as shown in any of the accompanying drawings is given by way of example only. In operation for a particular variable optical processing application, the electronic goggle device can be oriented in any other direction suitable for the particular application of the electronic goggle device, such as up, down, sideways, or any other orientation. Moreover, within the scope used herein, any directional terms (such as, front, back, inside, outside, toward, left, right, lateral, longitudinal, up, down, upper, lower, top, bottom, and side) are used only by way of example and do not limit the direction or orientation of any optical component or component of an optical component constructed as otherwise described herein.

[0030] Reference is now made in detail to the examples illustrated in the accompanying drawings and discussed below.

[0031] Figure 1A The invention is a diagram including an image display 180C ( Figure 2A) is a diagram of a side view of an example hardware configuration of an electronic goggle device 100 having an optical assembly 180A. The electronic goggle device 100 includes a plurality of visible light cameras 114A, 114B ( Figure 3 ), wherein the first visible light camera 114A is located on the right temple 110A, and the second visible light camera 114B is located on the left temple 110B ( Figure 2A ). In the example shown, the optical assembly 180A is located on the right side of the electronic goggles device 100. The optical assembly 180A may be located on the left side of the electronic goggles device 100 or at other locations.

[0032] Visible light cameras 114A, 114B may include image sensors that are sensitive to wavelengths in the visible light range. Each of visible light cameras 114A, 114B has a different front-facing coverage angle, for example, visible light camera 114A has a depicted coverage angle 111A ( Figure 3 ). The coverage angle is the angular range in which the respective image sensors of visible light cameras 114A, 114B detect incoming light and generate image data. Examples of such visible light cameras 114A, 114B include high-resolution complementary metal oxide semiconductor (CMOS) image sensors and video graphics array (VGA) cameras, such as 640p (e.g., 640×480 pixels totaling 0.3 megapixels), 720p, 1080p, 4K, or 8K, etc. The image sensor data from visible light cameras 114A, 114B may be captured along with geolocation data, digitized by an image processor, and stored in memory.

[0033] To provide stereoscopic vision, visible light cameras 114A, 114B may be coupled to an image processor ( Fig. 9 Image processor 912 may include components for receiving signals from visible light cameras 114A, 114B and processing those signals from visible light cameras 114A, 114B into a form suitable for storage in memory ( Fig. 9 The timestamp may be added by image processor 912 or other processor controlling the operation of visible light cameras 114A, 114B. Visible light cameras 114A, 114B allow the stereo camera to simulate human binocular vision. The stereo camera also provides a time stamp based on two images ( Figure 7 The image pair 758A, 758B) is used to reproduce the three-dimensional scene ( Figure 7912). Such three-dimensional images allow for an immersive virtual experience that feels real, for example, for virtual reality or video games. For stereoscopic vision, a pair of images 758A, 758B may be generated at a given moment—one for each of visible light cameras 114A, 114B. When a pair of images 758A, 758B generated from forward-facing fields of view (FOVs) 111A, 111B of visible light cameras 114A, 114B are stitched together (e.g., by image processor 912), depth perception is provided by optical components 180A, 180B.

[0034] In the example, the electronic eyewear device 100 includes a frame 105, a right edge 107A, a right temple 110A extending from a right lateral side 170A of the frame 105, and a see-through image display 180C (including an optical assembly 180A to present a GUI or other image to a user). Figure 2A-2B ). The electronic goggle device 100 includes a first visible light camera 114A connected to the frame 105 or the right temple 110A to capture a first image of a scene. The electronic goggle device 100 further includes a second visible light camera 114B connected to the frame 105 or the left temple 110B to capture a second image of the scene that at least partially overlaps the first image (e.g., simultaneously with the first visible light camera 114A). Figure 1A and Figure 1B Not shown, but the high speed (HS) processor 932 ( Fig. 9 ) is coupled to the electronic goggle device 100 and is connected to the visible light cameras 114A, 114B and the memory 934 accessible to the processor 932 ( Fig. 9 ), and the programming in the memory 934 may be provided in the electronic goggle device 100 itself.

[0035] Although in Figure 1A As not shown in the figure, the electronic goggles device 100 may also include a head movement tracker ( Figure 1B Element 109) or eye movement tracker ( Figure 2A Element 113 or Figure 2B and Figure 2C The electronic goggles device 100 may further include perspective image displays 180C, 180D of the optical components 180A, 180B for presenting the displayed image sequence, respectively. The electronic goggles device 100 may further include an image display driver ( Fig. 9The electronic goggles device 100 may further include a memory 934 and a processor 932 ( Fig. 9 ), the processor 932 and the processor 932 are able to access the image display driver 942 and the memory 934, and program in the memory 934. The execution of the programming by the processor 932 configures the electronic goggle device 100 to perform functions, including the function of presenting an initial display image of a sequence of display images via the perspective image display 180C, 180D, the initial display image having an initial field of view corresponding to the initial head direction or the initial eye gaze direction as determined by the eye movement tracker 113 or 213.

[0036] Execution of the programming by the processor 932 may further configure the electronic goggles device 100 to detect movement of the user of the electronic goggles device 100 by: (i) via a head movement tracker ( Figure 1B 109) to track the head movements of the user's head, or (ii) via an eye movement tracker ( Figure 2A Element 113 or Figure 2B and Figure 2C Element 213 of the electronic goggles device 100 tracks eye movements of the eyes of the user of the electronic goggles device 100. The execution of the programming by the processor 932 can further configure the electronic goggles device 100 to determine a field of view adjustment of the initial field of view of the initial display image based on the detected movement of the user. The field of view adjustment can include a continuous field of view corresponding to a continuous head direction or a continuous eye direction. The execution of the programming by the processor 932 can further configure the electronic goggles device 100 to generate a continuous display image of the display image sequence based on the field of view adjustment. The execution of the programming by the processor 932 can further configure the electronic goggles device 100 to present the continuously displayed images via the perspective image displays 180C, 180D of the optical components 180A, 180B.

[0037] Figure 1B It depicts Figure 1A 1 is an illustration of a top cross-sectional view of the optical components and electronics in a portion of the electronic goggle device 100 shown in FIG. 1 , which depicts a first visible light camera 114A, a head movement tracker 109, and a printed circuit board (PCB) 140. The construction and placement of the second visible light camera 114B is substantially similar to the first visible light camera 114A, except that the connection and coupling is on the other lateral side 170B ( Figure 2A). As shown, the electronic goggle device 100 includes a first visible light camera 114A and a circuit board, which may be a flexible printed circuit board (PCB) 140. A first hinge 126A connects the right temple 110A to an articulated arm 125A of the electronic goggle device 100. In some examples, the first visible light camera 114A, the flexible PCB 140, or other components of electrical connectors or contacts may be located on the right temple 110A or the first hinge 126A.

[0038] Figure 1B Also shown is a conductive shield 142 coupled to the RF ground plane 144 and the PCB 140 and disposed between the RF ground plane 144 and the PCB 140. The shield 142 contains RF electronic components such as a low power wireless circuit 924 and a high speed wireless circuit 936 ( Fig. 9 ) etc., and it provides RF grounding for RF electrical components. Shield cover 142 provides RF shielding to prevent stray RF signals from being emitted outside the shield cover. Shield cover 142 also provides grounding for safety and electrostatic discharge protection and can be formed as part of the antenna design.

[0039] As shown, the electronic goggle device 100 may include 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 (sometimes magnetometers) to measure and report specific forces, angular velocity, and sometimes magnetic fields around the body. The inertial measurement unit works by detecting linear acceleration using one or more accelerometers and detecting rotation rate using one or more gyroscopes. A typical configuration of an inertial measurement unit includes an accelerometer, a gyroscope, and a magnetometer for each of the three axes: the horizontal axis is used for left-right movement (X), the vertical axis (Y) is used for top-bottom movement, and the depth or distance axis is used for up-down movement (Z). The accelerometer detects the gravity vector. The magnetometer defines the rotation in the magnetic field (e.g., facing south, north, etc.) like a compass that generates a direction reference. The three accelerometers detect acceleration along the horizontal, vertical, and depth axes defined above, which may be defined relative to the ground, the electronic goggle device 100 , or a user wearing the electronic goggle device 100 .

[0040] The electronic goggle device 100 can detect the movement of the user of the electronic goggle device 100 by tracking the head movement of the user's head via the head movement tracker 109. The head movement includes a change in the head direction on the horizontal axis, the vertical axis, or a combination thereof from the initial head direction during the presentation of the initial display image on the image display. In one example, tracking the head movement of the user's head via the head movement tracker 109 includes measuring the initial head direction (e.g., lateral or diagonal movement) on the horizontal axis (e.g., X-axis), the vertical axis (e.g., Y-axis), or a combination thereof via an inertial measurement unit. Tracking the head movement of the user's head via the head movement tracker 109 further includes measuring continuous head directions on the horizontal axis, the vertical axis, or a combination thereof via the inertial measurement unit during the presentation of the initial display image.

[0041] Tracking head movement of the user's head via the head movement tracker 109 may include determining a change in head direction based on both the initial head direction and the continuous head direction. Detecting the movement of the user of the electronic goggle device 100 may further include determining that the change in head direction exceeds a deviation angle threshold on the horizontal axis, the vertical axis, or a combination thereof in response to tracking head movement of the user's head via the head movement tracker 109. In a sample configuration, 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% from the amount.

[0042] 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, when the user looks up, for example, changes along the vertical axis display weather information, time of day, date, calendar appointments, etc. In another example, when the user looks down on the vertical axis, the electronic goggle device 100 can be powered off.

[0043] like Figure 1B As shown, the right temple 110A includes a temple body 211 configured to receive a temple cover, wherein Figure 1B The temple cover is omitted in the cross section of FIG. Various interconnected circuit boards (such as a PCB or flexible PCB 140, etc.) are disposed in the right temple 110A, and these circuit boards include circuits for the first visible light camera 114A, the microphone 130, the speaker 132, the low-power wireless circuit (e.g., for communicating via Wireless short-range network communications) and high-speed wireless circuits (e.g., for Controller circuit for wireless LAN communication and positioning via GPS).

[0044] The first visible light camera 114A is connected to the flexible PCB 140 or is disposed on the flexible PCB 140 and is covered by a visible light camera cover lens, which is aimed through an opening formed in the right temple 110A. In some examples, the frame 105 connected to the right temple 110A includes an opening (multiple openings) for the visible light camera cover lens. The frame 105 may include a front-facing side configured to face away from the user's eyes outward. The opening for the visible light camera cover lens can be formed on the front side and through the front side. In this example, the first visible light camera 114A has an outward-facing coverage angle 111A with the line of sight or viewing angle of the right eye of the user of the electronic goggle device 100. The visible light camera cover lens can also be adhered to the outward-facing surface of the right temple 110A, wherein the opening is formed with an outward-facing coverage angle, but in a different outward direction. The connection can also be indirect via an intervening component.

[0045] First visible light camera 114A may be connected to first see-through image display 180C of first optical assembly 180A to generate a first background scene of a first continuously displayed image. Second visible light camera 114B may be connected to second see-through image display 180D of second optical assembly 180B to generate a second background scene of a second continuously displayed image. The first background scene and the second background scene may partially overlap to present a three-dimensional observable area of ​​the continuously displayed image.

[0046] Flexible PCB 140 may be disposed within right temple 110A and coupled to one or more other components housed in right temple 110A. Although shown as being formed on circuit board 140 of right temple 110A, first visible light camera 114A may be formed on another circuit board (not shown) in one of left temple 110B, articulated arm 125A, articulated arm 125B, or frame 105.

[0047] Figure 2A is a diagram depicting a rear view of an example hardware configuration of the electronic goggle device 100. Figure 2A As shown, the electronic goggles device 100 is configured to be worn by a user. Figure 2A The electronic eyewear device 100 may take other forms and may be combined with other types of frames, such as headgear, headphones, or helmets.

[0048] In the goggles example, the electronic goggles device 100 includes a frame 105 including a right edge 107A connected to a left edge 107B via a bridge 106, the bridge 106 being configured to receive the user's nose. The right edge 107A and the left edge 107B include respective apertures 175A, 175B, which hold respective optical elements 180A, 180B, such as lenses and see-through displays 180C, 180D, etc. As used herein, the term lens is intended to cover 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.

[0049] Although shown as having two optical elements 180A, 180B, the electronic goggle device 100 may include other arrangements, such as a single optical element, etc., depending on the application or intended user of the electronic goggle device 100. As further shown, the electronic goggle device 100 includes a right temple 110A adjacent to the right outer side 170A of the frame 105 and a left temple 110B adjacent to the left outer side 170B of the frame 105. The temples 110A, 110B may be integrated into the frame 105 on the respective sides 170A, 170B (as illustrated) or implemented as separate components attached to the frame 105 on the respective sides 170A, 170B. Alternatively, the temples 110A, 110B may be integrated into the articulated arms 125A, 125B attached to the frame 105.

[0050] exist Figure 2A In an example, an eye scanner 113 is provided, which 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 an example, the infrared camera 120 is a visible light camera, such as a low-resolution video graphics array (VGA) camera (e.g., 640×480 pixels totaling 0.3 million pixels), in which the blue filter is removed. The infrared emitter 115 and the infrared camera 120 can be co-located on the frame 105. For example, both are shown as being connected to the upper portion of the left edge 107B. The frame 105 or one or more of the temples 110A and 110B may 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 by, for example, soldering.

[0051] Other arrangements of infrared emitter 115 and infrared camera 120 can be implemented, including arrangements in which both infrared emitter 115 and infrared camera 120 are on right edge 107A or in different locations on frame 105. For example, infrared emitter 115 can be on left edge 107B, and infrared camera 120 can be on right edge 107A. In another example, infrared emitter 115 can be on frame 105, and infrared camera 120 can be on one of temples 110A or 110B, or vice versa. Infrared emitter 115 can be connected substantially anywhere on frame 105, right temple 110A, or left temple 110B to emit a pattern of infrared light. Similarly, infrared camera 120 can be connected substantially anywhere on frame 105, right temple 110A, or left temple 110B to capture at least one reflection change in the emission pattern of infrared light.

[0052] Infrared emitter 115 and infrared camera 120 can be arranged to face inwardly toward the user's eyes (with a partial or full field of view of the eyes) to identify corresponding eye positions and gaze directions. For example, infrared emitter 115 and infrared camera 120 can be positioned directly in front of the eyes, in the upper portion of frame 105, or in temple 110A or 110B at either end of frame 105.

[0053] Figure 2B 1 is a diagram depicting a rear view of another example hardware configuration of the electronic goggle device 200. In this example configuration, the electronic goggle device 200 is depicted as including an eye scanner 213 on the right temple 210A. As shown, an infrared emitter 215 and an infrared camera 220 are co-located on the right temple 210A. The eye scanner 213 or one or more components of the eye scanner 213 can be located on the left temple 210B and other locations of the electronic goggle device 200 (e.g., the frame 105). The infrared emitter 215 and the infrared camera 220 are co-located on the right temple 210A. Figure 2A The infrared emitter of is similar to an infrared camera, but the eye scanner 213 can be changed to be sensitive to different wavelengths of light, as previously described in Figure 2A Similar to Figure 2A , the electronic goggle device 200 includes a frame 105 including a right edge 107A connected to a left edge 107B via a bridge 106. The edges 107A-B may include respective apertures that hold respective optical elements 180A, 180B including see-through displays 180C, 180D.

[0054] Figure 2C and Figure 2D1 is a diagram depicting a rear view of an example hardware configuration of the electronic eyewear device 100 including two different types of see-through image displays 180C, 180D. In one example, these see-through image displays 180C, 180D of the optical assemblies 180A, 180B include integrated image displays. Figure 2C As shown, the optical components 180A, 180B include any suitable type of display matrix 180C, 180D, such as a liquid crystal display (LCD), an organic light emitting diode (OLED) display, a waveguide display, or any other such display.

[0055] The optical assembly 180A, 180B also includes one or more optical layers 176A-N, which may include lenses, optical coatings, prisms, reflectors, waveguides, optical strips, and other optical components in any combination. The optical layer 176 may include a prism having a suitable size and configuration 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 prism of the optical layer 176 may extend over all or at least a portion of the corresponding apertures 175A, 175B formed in the edges 107A, 107B to allow the user to see the second surface of the prism when the user's eyes are viewing through the corresponding edges 107A, 107B. The first surface of the prism of the optical layer 176 faces upward from the frame 105 and the display matrix covers the prism, so that the photons and light emitted by the display matrix hit the first surface. The prism may be sized and shaped so that light is refracted within the prism and directed toward the user's eyes by the second surface of the prism of the optical layer 176. In this regard, the second surface of the prisms of the optical layer 176 can be convex to direct light toward the center of the eye. The prisms can be sized and shaped to magnify the image projected by the see-through image display 180C, 180D, and the light travels through the prisms so that the image viewed from the second surface is larger in one or more dimensions than the image emitted by the see-through image display 180C, 180D.

[0056] In another example, the see-through image displays 180C, 180D of the optical assemblies 180A, 180B may include Figure 2D The projected image display shown. The optical assembly 180A, 180B includes a projector 150, which can be a three-color projector using a scanning mirror, a galvanometer, a laser projector, or other types of projectors. During operation, a light source such as the projector 150 is arranged in or on one of the temples 110A or 110B of the electronic goggle device 100. The optical assembly 180A, 180B may include one or more optical bands 155A-N spaced across the width of the lens of the optical assembly 180A, 180B or across the depth between the front surface and the back surface of the lens.

[0057] When the photons projected by the projector 150 travel through the lenses of the optical assemblies 180A, 180B, the photons encounter the optical band 155. When a particular photon encounters a particular optical band, the photon is either redirected toward the user's eye, or it passes to the lower optical band. The combination of the modulation of the projector 150 and the modulation of the optical band can control a particular photon or light beam. In an example, the processor controls the optical band 155 by initiating a mechanical, acoustic, or electromagnetic signal. Although shown as having two optical assemblies 180A, 180B, the electronic goggle device 100 may include other arrangements, such as a single or three optical assemblies, etc., or the optical assemblies 180A, 180B may have different arrangements depending on the application or intended user of the electronic goggle device 100.

[0058] like Figure 2C and Figure 2D As further shown in FIG. 1 , the electronic eyewear device 100 includes a right temple 110A adjacent to the right outer side portion 170A of the frame 105 and a left temple 110B adjacent to the left outer side portion 170B of the frame 105. The temples 110A, 110B may be integrated into the frame 105 on the respective outer sides 170A, 170B (as shown) or implemented as separate components attached to the frame 105 on the respective outer sides 170A, 170B. Alternatively, the temples 110A, 110B may be integrated into the articulated arms 125A, 125B attached to the frame 105.

[0059] In one example, the perspective image display includes a first perspective image display 180C and a second perspective image display 180D. The electronic goggle device 100 may include a first aperture 175A and a second aperture 175B for holding the corresponding first optical component 180A and the second optical component 180B. The first optical component 180A may include a first perspective image display 180C (e.g., a display matrix, or an optical strip and a projector in the right temple 110A). The second optical component 180B may include a second perspective image display 180D (e.g., a display matrix or an optical strip and a projector in the right temple 110A (shown as projector 150)). The continuous field of view of the continuous display image may include a viewing angle between about 15° to 30° (and more specifically, 24°) measured horizontally, vertically or diagonally. The continuous display image with a continuous field of view represents a combined three-dimensional observable area visible by stitching together the two display images presented on the first image display and the second image display.

[0060] As used herein, "angle of view" describes the angular range of the field of view associated with the displayed image presented on each of the image displays 180C, 180D of the optical assemblies 180A, 180B. "Coverage angle" describes the angular range of the lens of the visible light camera 114A or 114B 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, possibly including some vignetting (i.e., the brightness or saturation of the image decreases toward 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 toward the edges, and the effective viewing angle will be limited to the coverage angle. "Field of view" is intended to describe the field of observable area that a user of the electronic goggle device 100 can see through his or her eyes via the displayed image presented on the image displays 180C, 180D of the optical assemblies 180A, 180B. The image display 180C of the optical assemblies 180A, 180B may have a field of view covering an angle between 15° and 30° (eg, 24°) and a resolution of 480×480 pixels (or greater, eg, 720p, 1080p, 4K, or 8K).

[0061] Figure 3 Shows Figure 2A The electronic goggles device 100 includes an infrared emitter 115, an infrared camera 120, a frame front 330, a frame back 335, and a circuit board 340. Figure 3 As can be seen in FIG. 1 , the upper portion of the left edge of the frame of the electronic goggles device 100 includes a frame front face 330 and a frame back face 335. An opening for the infrared emitter 115 is formed on the frame back face 335.

[0062] As shown in the encircled cross 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 frame front 330 and the frame back 335. Also shown in more detail is the attachment of the left temple 110B to the left temple 125B via the left hinge 126B. In some examples, components of the eye movement tracker 113, including the infrared emitter 115, the flexible PCB 340, or other electrical connectors or contacts, can be located on the left temple 125B or the left hinge 126B.

[0063] Figure 4 is through the infrared emitter 115 and the frame and Figure 3 A cross-sectional view corresponding to the surrounding cross-section 4 of the electronic goggles device. Figure 4 As shown, in Figure 4The multiple layers of the electronic goggle device 100 are illustrated in a cross-section of FIG. The frame includes a frame front 330 and a frame back 335. The flexible PCB 340 is arranged on the frame front 330 and connected to the frame back 335. The infrared emitter 115 is disposed on the flexible PCB 340 and covered by the infrared emitter cover lens 445. For example, the infrared emitter 115 is reflowed to the back of the flexible PCB 340. The reflow attaches the infrared emitter 115 to the contact pads formed on the back of the flexible PCB 340 by subjecting the flexible PCB 340 to controlled heat that melts the solder paste to connect the two components. In one example, the reflow is used to surface mount the infrared emitter 115 on the flexible PCB 340 and electrically connect the two components. However, it should be understood that the through hole can be used to connect the leads from the infrared emitter 115 to the flexible PCB 340, for example, via an interconnect.

[0064] Frame back 335 includes an infrared emitter opening 450 for an infrared emitter cover lens 445. Infrared emitter opening 450 is formed on a rear-facing side of frame back 335, which is configured to face inwardly toward the user's eyes. In this example, flexible PCB 340 can be connected to frame front 330 via flexible PCB adhesive 460. Infrared emitter cover lens 445 can be connected to frame back 335 via infrared emitter cover lens adhesive 455. The coupling can also be indirect via intervening components.

[0065] In the example, the processor 932 uses the eye tracker 113 to determine Figure 5 The eye gaze direction 230 of the wearer's eye 234 shown in FIG. 1 , and Figure 6 180. The eye tracker 113 is a scanner that uses infrared light illumination (e.g., near infrared, short wavelength infrared, medium wavelength infrared, long wavelength infrared, or far infrared) to capture images of changes in 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 see-through display 180.

[0066] Figure 7 The block diagram in FIG. 1 illustrates an example of capturing visible light with cameras 114A, 114B. Visible light is captured by a first visible light camera 114A having a circular field of view (FOV) 111A. The selected rectangular first raw image 758A is used for the image processor 912 ( Fig. 9). Visible light is also captured by a second visible light camera 114B having a circular FOV 111B. A rectangular second raw image 758B selected by image processor 912 is used for image processing by processor 912. The raw images 758A, 758B have overlapping fields of view 713. Processor 912 processes the raw images 758A, 758B and generates a three-dimensional image 715 for display by display 180.

[0067] Fig. 8A and Figure 8B 800A, wherein the hinge 126A is in a bent position ( Fig. 8A ) and open vertical position ( Figure 8B ). Hinge 126A couples frame 105 to temple 125A. SMA actuator 800A includes SMA wire 802, frame SMA mount 804, and temple SMA mount 806 that couples frame 105 to temple 125A. SMA actuator 800A is configured to move hinge 126A from an open vertical position ( Figure 8B ) rotated to the bent position ( Fig. 8A ). Hinge 126A has a mechanical stop 808 that stops the hinge 126A from opening when the hinge 126A has reached the open position ( Figure 8B ), the mechanical stop 808 contacts the frame surface 810. The mechanical stop 808 prevents over-extension of the hinge 126A and prevents damage to the SMA wire 802 and SMA mounts 804, 806. Over-extension of the hinge occurs when the angle between the inside of the temple and the frame exceeds 90 degrees.

[0068] The frame SMA mount 804 and the temple SMA mount 806 provide mechanical connection of the SMA wire 802 to the frame 105 and the temple 125A, respectively. The frame SMA mount 804 and the temple SMA mount 806 additionally provide electrical connection of the SMA wire 802 to the frame electronics 820 and the temple electronics 822. The frame electronics 820 is electrically coupled to the frame SMA mount 804 via the connector 814, and the temple electronics 822 is electrically coupled to the temple SMA mount 806 via the connector 816. The connectors 814, 816 are configured to transmit current to and from the SMA wire actuator 800A. In an example, the frame electronics 820 controllably provides current to control the length of the SMA wire 802. The connectors 814, 816 include one or more electrical conductors. The one or more conductors 824 are configured to carry power and data signals between the frame electronics 820 and the temple electronics 824 .

[0069] The hinge 126A rotates freely about a vertical axis in response to externally applied forces, such as a user folding and unfolding the temple 125A from the frame 105. When current is transmitted from the frame electronics 820 and through the SMA wire 802, the SMA wire 802 may heat to a temperature above the state transition temperature of the SMA wire 802. If the SMA wire 802 exceeds the state transition temperature, the length of the SMA wire 802 decreases and a biasing force including a torque about the vertical axis of the hinge 126A is responsively applied, causing the temple 125A to fold inwardly toward the frame 105. When the user wears the goggles 100, the current applied to the SMA wire 802 causes the temple 125A to apply a force to the user's head because the SMA wire 802 exceeds the state transition temperature. This force results in a comfortable and snug fit of the electronic goggle device 100 on the user's head, and is described below with reference to FIG. Fig. 9 and Fig.10 1. If the current is no longer supplied to the SMA wire 802, the SMA wire 802 maintains its position until sufficient external force is applied to overcome the tension of the SMA wire 802, thereby adjusting the hinge 126A toward the open position or the bent position. By increasing the number of SMA wires 802 within the actuator 800A, the torque generated by the SMA actuator 800A can be increased. In one example, five separate SMA wires 802 are used to couple the frame 105 to the temple 125A.

[0070] Hinge 126B and temple 125B have the same function and configuration as hinge 126A and temple 125A.

[0071] Figure 8C and Fig.8D A top cross-sectional view of another example of a hinge 126A of the electronic eyewear device 100 having a rotary SMA actuator 800B is shown. Figure 8C is shown in a bent position and in Fig.8D 8 is shown in the open vertical position. The rotary SMA actuator 800B is disposed within the hinge 126A and is electrically coupled to the temple electronics 822 via a connector 818. The connector 818 is configured to supply current from the temple electronics 822 to the rotary SMA actuator 800B, such as current provided to the temple electronics 822 by the frame electronics 820 via conductors 824. In another embodiment, the rotary SMA actuator 800B receives current directly from the frame electronics 820. The rotary SMA actuator 800B applies torque directly to the hinge 126A in response to the current. The rotor of the rotary SMA actuator 800B is connected to the hinge 126A to directly apply torque around the vertical axis of the hinge 126A and move the temple 125A inward and toward the folded position.

[0072] Compared with Fig. 8A and Figure 8B Similar to the wire 802 described, current is transmitted through the SMA wire (not shown) in the rotary SMA actuator 800B, causing the SMA wire to heat to a temperature above the state transition temperature of the wire. When the SMA wire exceeds the state transition temperature, the length of the SMA wire is reduced and a torque is applied around the vertical axis of the hinge 126A, causing the temple 125A to move inward toward the frame 105. When the user wears the goggles 100, since the SMA wire exceeds the state transition temperature, the current applied to the rotary SMA actuator 800B causes the temple 125A to apply force to the user's head. This force causes the electronic goggles device 100 to fit comfortably and snugly on the user's head. If the rotary SMA actuator 800B is no longer supplied with current, the rotary SMA actuator 800B maintains its position until sufficient external force is applied to overcome the tension of the SMA rotary actuator 800B and adjust the hinge 126A toward the open position or the bent position. Mechanical stops 808 protect hinge 126B and rotary SMA actuator 800B from over-extension of hinge 126A. Hinge 126A is free to rotate about a vertical axis in response to externally applied forces, such as a user folding and unfolding temple 125A from frame 105, etc.

[0073] Hinge 126B and temple 125B have the same function and configuration as hinge 126A and temple 125A.

[0074] like Fig. 9 As shown, the processor 932 is configured to control the SMA actuators 800A-800B. In one example, the processor 932 is located in the frame electronics 820. In another example, the processor 932 is located in the temple electronics 822. The processor 932 controls the current to the SMA actuators 800A-800B to heat the SMA wire to above the state transition temperature to generate a torque around the hinges 126A-126B. The SMA wire control program 946 stored in the memory 934 is executed by the processor 932 to control the amount of force generated by the SMA actuators 800A-800B on the temples 125A-125B so that the temple force applied to the side of the user's head provides a comfortable and snug fit. In one example, the processor 932 controls a power supply in the frame electronics 820 configured to supply a predetermined current (e.g., 1 mA) to the SMA actuators 800A-800B to generate a predetermined movement of the SMA actuators 800A-800B that causes the temples 125A-125B to move toward the frame 105. The movement of the SMA actuators 800A-800B causes the respective temples 125A-125B to bend inwardly and secure the goggles 100 against the user's head. The temple bending is sufficient to secure the goggles 100 to different user head sizes.

[0075] In another example, the processor 932 is also configured to determine the resistance of the SMA wire 802 in the actuator 800A-800B by measuring the voltage and current supplied to the actuator 800A-800B. Applying current to heat the SMA wire 802 causes the wire length to decrease and the cross-sectional area of ​​the SMA wire 802 to increase. As a result, the resistance of the SMA wire 802 increases. A calibration is performed to measure the relationship between the hinge 126A-126B angular position and the resistance of the SMA wire 802. The result is stored in a lookup table in the memory 934. The processor 932 estimates that the temples 125A-125B of the electronic goggles device 100 have achieved a snug fit by measuring the resistance of the SMA wire 802, which corresponds to the hinge angular position. The angle at which the snug fit is achieved can vary with the user. In one example, when the angle between the frame 105 and the temples 125A-125B is 88 degrees, a snug fit is achieved. In another example, the processor 932 can utilize a sensor, such as an angle sensor coupled to the respective hinge 126A-126B, to physically determine the angular position of the hinge 126A-126B. The sensor measures the angular position of the hinge 126A-126B and sends a corresponding signal to the processor 932. When the processor 932 determines that the actuator 800A-800B has reached a position that remains constant even with an increased applied current, the processor 932 stops the flow of current to the actuator 800A-800B.

[0076] The SMA actuators 800A-B allow the electronic eyewear device 100 to fit a wider range of user head sizes. The torque applied to the hinges 126A-126B by the SMA actuators 800A-800B provides a snug fit for a wider range of users than standard eyewear hinge systems. This allows one size of frame and temple to fit a wider range of users, which in turn reduces the number of sizes that need to be produced, thereby simplifying design, manufacturing, supply chain, and retail operations.

[0077] Fig. 9 Additional electronic components arranged in the electronic goggle device 100 / 200 are depicted. The electronic components shown include a processor 932, a memory 934, and a see-through image display 180C, 180D including an embedded antenna.

[0078] 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 communicate with external devices via a wireless connection.

[0079] The user interface adjustment system 900 includes a wearable device having an eye movement tracker 213 (e.g., Figure 2B 925 and 937). The electronic goggles device 100 is shown as an infrared emitter 215 and an infrared camera 220 in FIG. 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 smart phone, a tablet, a laptop, an access point, or any other such device capable of connecting to the electronic goggles device 100 using both a low-power wireless connection 925 and a 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 connections and wireless connections.

[0080] The electronic goggle device 100 includes at least two visible light cameras 114 (one associated with one side (e.g., right side 170A), and one associated with the other side (e.g., left side 170B)). The electronic goggle device 100 further includes two perspective image displays 180C-180D (associated with each side) of the optical assembly 180A-180B. The electronic goggle device 100 also includes an image display driver 942, an image processor 912, a low power circuit 920, and a high speed circuit 930. Fig. 9 The components for the electronic goggle device 100 / 200 are shown to be located on one or more circuit boards, such as a PCB or a flexible PCB, in the temples 110A-110B, as previously described. Alternatively or additionally, the depicted components may be located in the temples, frames, hinges, or bridges of the electronic goggle device 100. The visible light cameras 114A-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 may be used to capture data, including images of a scene with an unknown object.

[0081] The eye movement tracking program 945 implements user interface field of view adjustment instructions, including instructions for causing the electronic goggles device 100 to track eye movements of the eyes of the user of the electronic goggles device 100 via the eye movement tracker 213. Other implemented instructions (functions) cause the electronic goggles device 100 to determine a field of view adjustment for the initial field of view of the initial display image based on the detected eye movement of the user corresponding to the continuous eye direction. Further implemented instructions generate a continuous display image of the display image sequence based on the field of view adjustment. The continuously displayed images are generated as visible output to the user via the user interface. The visible output appears on the perspective image displays 180C-180D of the optical components 180A-180B, and the perspective image displays 180C-180D are driven by the image display driver 942 to present the displayed image sequence, including the initial displayed image with the initial field of view and the continuous displayed image with the continuous field of view.

[0082] like Fig. 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, the image display driver 942 is connected to the high-speed circuit 930 and is operated by the high-speed processor 932 to drive the image display 180C-180D of the optical assembly 180A-180B to create a virtual image. The high-speed processor 932 can be any processor capable of managing the high-speed communication and operation of any general computing system required for the electronic goggles device 100. The high-speed processor 932 includes the processing resources required for managing the high-speed data transmission using the high-speed wireless circuit 936 on the high-speed wireless connection 937 to the wireless local area network (WLAN). In some examples, the high-speed processor 932 executes an operating system, such as a LINUX operating system or other such operating systems of the electronic goggles device 100, and the operating system is stored in the memory 934 for execution. In addition to any other duties, the high-speed processor 932 that executes the software architecture of the electronic goggles device 100 is used to manage the data transmission using the high-speed wireless circuit 936. In some examples, 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 high-speed wireless circuit 936.

[0083] The low power wireless circuit 924 and the high speed wireless circuit 936 of the electronic goggle device 100 may include a short range transceiver (e.g., UWB or Bluetooth TM) and a wireless wide area, local area network, or wide area network transceiver (e.g., cellular or WiFi) including an antenna. 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 details of the architecture of the electronic goggle device 100, as can the other elements of the network 995.

[0084] The memory 934 includes any storage device capable of storing various data and applications, including, among other things, color maps, camera data generated by the visible light cameras 114A-B and the image processor 912, and images generated by the image display driver 942 for display on the see-through image displays 180C-180D of the optical assemblies 180A-180B. Although the memory 934 is shown as being integrated with the high-speed circuit 930, in other examples, the memory 934 may be an autonomous, separate element of the electronic goggle device 100. In some such examples, electrical routing lines may provide a connection from the image processor 912 or the low-power processor 922 to the memory 934 through a chip including the high-speed processor 932. In other examples, the high-speed processor 932 may manage addressing of the memory 934 so that the low-power processor 922 will direct the high-speed processor 932 at any time when a read or write operation involving the memory 934 is required.

[0085] The server system 998 may be one or more computing devices as part of a service or network computing system, for example including a processor, a memory, and a network communication interface to communicate with the mobile device 990 and the electronic goggles device 100 via the network 995. The electronic goggles device 100 is connected to a host computer. For example, the electronic goggles device 100 is paired with the mobile device 990 via a high-speed wireless connection 937 or connected to the server system 998 via the network 995.

[0086] The output components of the electronic goggle device 100 include visual components such as Figure 2C to Figure 2DThe image displays 180C to 180D of the optical components 180A to 180B described in the figure are (for example, displays such as liquid crystal displays (LCDs, etc.), plasma display panels (PDPs), light emitting diode (LED) displays, projectors, or waveguides). The image displays 180C to 180D of the optical components 180A-180B are driven by the image display driver 942. The output components of the electronic goggles device 100 also include acoustic components (for example, speakers), tactile components (for example, vibration motors), other signal generators, etc. The input components of the electronic goggles device 100, the mobile device 990, and the server system 998 may include alphanumeric input components (for example, keyboards, touch screens configured to receive alphanumeric inputs, optical keyboards, or other alphanumeric input components), point-based input components (for example, mice, touch pads, trackballs, joysticks, motion sensors, or other indicating instruments), tactile input components (for example, physical buttons, touch screens or other tactile input components that provide the location and force of touch or touch gestures), audio input components (for example, microphones), etc.

[0087] The electronic goggle device 100 may optionally include additional peripheral device elements 919. Such peripheral device elements may include biometric sensors, additional sensors, or display elements integrated with the electronic goggle device 100. For example, the peripheral device elements 919 may include any I / O components, including output components, motion components, position components, or any other such components described herein. The electronic goggle device 100 may take other forms and may be combined with other types of frames, such as headgear, headphones, or helmets.

[0088] For example, the biometric components of the user interface field of view adjustment may include components for detecting expressions (e.g., hand expressions, facial expressions, vocal expressions, body postures, or eye tracking), measuring biological signals (e.g., blood pressure, heart rate, body temperature, sweating, or brain waves), identifying people (e.g., voice recognition, retinal identification, facial identification, fingerprint identification, or electroencephalogram-based identification), etc. The motion components include acceleration sensor components (e.g., accelerometers), gravity sensor components, rotation sensor components (e.g., gyroscopes), etc. The position components include position sensor components (e.g., global positioning system (GPS) receiver components) for generating position coordinates, WiFi or Bluetooth components for generating positioning system coordinates, etc. TM The present invention also includes a transceiver, an altitude sensor assembly (e.g., an altimeter or barometer that detects air pressure from which altitude can be derived), an orientation sensor assembly (e.g., a magnetometer), and the like. Such positioning system coordinates may also be received from the mobile device 990 via the low power wireless circuit 924 or the high speed wireless circuit 936 via the wireless connection 925, 937.

[0089] According to some examples, an "application" or "applications" is a program that performs the functions defined in a program. One or more of the applications structured in various ways may be created using different programming languages, such as an object-oriented programming language (e.g., Objective-C, Java, or C++) or a procedural programming language (e.g., C or assembly language), etc. In a specific example, a third-party application (e.g., an application created by an entity other than the vendor of a particular platform using ANDROID TM or IOS TM Software Development Kit (SDK) can be used to develop applications on mobile operating systems such as IOS TM ANDROID TM , Mobile software running on the iPod Phone or other mobile operating system). In this example, the third-party application can call API calls provided by the operating system to facilitate the functions described in this article.

[0090] Fig.10 1 is a flow chart 1000 illustrating the use of SMA actuators 800A-800B to adjust the fit of the electronic goggle apparatus 100 to a user. The example process provides a secure and comfortable fit of the electronic goggle apparatus 100 on the user.

[0091] At block 1002, the user places the electronic eyewear device 100 on his head with the hinges 126A-126B in an open position, such as Fig. 8A and Figure 8C shown.

[0092] At block 1004, the processor 932 sends a control signal to the frame electronics 820 (such as a power supply, etc.) to send current to the SMA actuators 800A-800B. In one example, the current is conducted from the frame electronics 820 through the SMA wire 802 of the actuator 800A, such as via Fig. 8A The connector 814 and SMA mounting member 804 shown in FIG. In another example, the temple electronics 822 is connected to the temple electronics 822 via the connector 816 and the SMA mounting member 806. Figure 8C The SMA wires in the rotary SMA actuator 800B shown in FIG. 8 supply current. The current may first be supplied from the frame electronics 820 to the temple electronics 822, and then to the rotary SMA actuator 800B.

[0093] At block 1006, when the SMA wire of the actuator 800A-800B exceeds the state-transition temperature threshold, the actuator 800A-800B applies a torque around the vertical axis of the hinge 126A-126B. The current flowing in the SMA wire raises the temperature of the SMA wire above the state transition temperature within a few seconds. When the SMA wire exceeds the state transition temperature, the SMA wire length decreases and applies a torque to the hinge 126A-126B, causing the temples 125A-125B to be pushed inward toward the frame to press against the sides of the user's head.

[0094] At block 1008 , the actuators 800A- 800B maintain their positions until sufficient external force is supplied to overcome the tension of the SMA wires and move the hinges 126A- 126B in either direction.

[0095] It will be understood that the terms and expressions used herein have the ordinary meanings, as given to such terms and expressions for their corresponding corresponding inquiry and research fields, except that specific meanings have been set forth otherwise herein. Relational terms such as first and second, etc., may be used only to distinguish one entity or action from another entity or action, 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 variation thereof are intended to cover non-exclusive inclusions, such that a process, method, article or device that includes or contains a series of elements or steps includes not only those elements or steps, but may also include other elements or steps that are not explicitly listed or inherent to such processes, methods, articles or devices. 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 device that includes the element.

[0096] Unless otherwise stated, all measurements, values, ratings, positions, 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 reasonable ranges consistent with the functions to which they are related and with the conventional art to which they belong. For example, parameter values, etc. may deviate from the stated quantity by as much as ±10%, unless otherwise expressly stated.

[0097] In addition, in the above detailed description, different features are grouped together in different examples for the purpose of simplifying the present disclosure. This method of the present disclosure should not be interpreted as reflecting the intention that the claimed examples require more features than the features explicitly stated in each claim. On the contrary, 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 hereby incorporated into the detailed description, with each claim independently serving as a separately claimed subject matter.

[0098] While the foregoing has described what are considered to be the best modes and other examples, it should be understood that various modifications may be made therein, and the subject matter disclosed herein may be implemented in different forms and examples, and they may be applied to many applications, only some of which are described herein. The appended claims are intended to claim any and all modifications and variations that fall within the true scope of the present concept.

Claims

1. An electronic goggles device, comprising: a frame, the frame including frame electronics; A temple, the temple comprising temple electronic components; a hinge coupling the temple to the frame; as well as A shape memory alloy (SMA) actuator is coupled to the hinge and is configured to bias the temple inwardly relative to the frame.

2. The electronic goggles device according to claim 1, wherein: The SMA actuator is coupled to the frame and the temple.

3. The electronic goggles device according to claim 1, wherein: The SMA actuator includes an SMA wire.

4. The electronic goggles device according to claim 1, wherein: The SMA actuator includes a plurality of SMA wires.

5. The electronic goggles device according to claim 1, wherein: The SMA actuator is a rotary actuator.

6. The electronic goggles device according to claim 1, wherein: The frame electronics are configured to control the SMA actuator.

7. The electronic goggles device according to claim 6, wherein: The frame electronics are configured to supply current to the SMA actuator.

8. The electronic goggles device according to claim 1, wherein: The hinge is free to move about a vertical axis in response to externally applied forces.

9. The electronic goggles according to claim 1, wherein: The hinge includes a mechanical stop configured to prevent overextension of the hinge.

10. The electronic goggles according to claim 9, wherein: The mechanical stop is configured to prevent the SMA actuator from being damaged.

11. A method of using an electronic goggles device, the electronic goggles device comprising: A frame, the frame including frame electronics; temples, the temples including temple electronics; a hinge coupling the temple to the frame; and a shape memory alloy (SMA) actuator coupled to the hinge and configured to bias the temple inwardly relative to the frame: controlling the SMA actuator; as well as In response to the SMA actuator, pressure is applied to the user through the temple.

12. The method according to claim 11, wherein: The SMA actuator is coupled to the frame and the temple.

13. The method according to claim 11, wherein: The SMA actuator includes an SMA wire.

14. The method according to claim 11, wherein: The SMA actuator includes a plurality of SMA wires.

15. The method according to claim 11, wherein: The SMA actuator is a rotary actuator.

16. The method according to claim 11, wherein: The frame electronics controls the actuator.

17. The method according to claim 16, wherein: The frame electronics supplies electrical current to the SMA actuator.

18. The method according to claim 11, wherein: The hinge is free to move in response to externally applied forces.

19. The method according to claim 11, wherein: The hinge includes a mechanical stop to prevent over-extension of the hinge and to prevent the SMA actuator from being damaged.

20. A non-transitory computer readable medium storing program code, the program code, when executed, being operative to cause a processor of an eyewear device including a frame, temples, hinges, and a shape memory alloy (SMA) actuator to perform the following steps: controlling the SMA actuator; and applying pressure to a user through the temple in response to the SMA actuator; The frame includes frame electronic components, the temples include temple electronic components, the hinges connect the temples to the frame, and the SMA actuators are configured to bias the temples inwardly relative to the frame and are configured to adjust the fit of the electronic goggle device on the user.

Images