Overextension hinge with FPC service loops for eyeglasses

Abstract

An eyeglass frame having a frame, a hinge, and an overextendable temple is disclosed, wherein the overextendable temple has a flexible printed circuit (FPC) comprising service loops. An extender is coupled to the hinge and the temple, and the extender extends relative to the hinge to allow overextension of the temple relative to the frame. A first service loop allows extension of the FPC when the temple rotates about the hinge, and a second service loop allows the temple to extend radially away from the hinge.

Description

Technology Field

[0001] This application claims priority to U.S. Patent Application No. 16 / 793,264, titled "HYPEREXTENDING HINGE HAVING FPC SERVICE LOOPS FOR EYEWEAR," filed on February 18, 2020, the contents of which are incorporated herein by reference in their entirety.

[0002] The subject of this claim relates to eyewear devices, such as smart glasses and see-through displays. Background Technology

[0003] Portable eyewear devices available today, such as smart glasses, headwear, and headgear, integrate cameras and see-through displays. Eyewear typically includes frames and temples that can extend into an open position to be positioned around the user's eyes. Brief explanation of the drawing

[0004] The drawings in the drawings section illustrate one or more implementations merely as examples, not limitations. In the drawings, similar reference numbers refer to identical or similar elements.

[0005] FIG. 1a is a side view of an exemplary hardware configuration of an eyeglass device illustrating a right optical assembly having an image display, wherein field of view adjustments are applied to a user interface presented on the image display based on head or eye movements detected by the user.

[0006] FIG. 1b is a planar cross-sectional view of the temple of FIG. 1a showing a visible light camera, a head movement tracker for tracking the head movements of the user of the eyeglass device, and a circuit board.

[0007] FIG. 2a is a rear view of an exemplary hardware configuration of an eyewear device including an eye scanner on a frame for use in a system for identifying a user of the eyewear device.

[0008] FIG. 2b is a rear view of an exemplary hardware configuration of another eyewear device including an eye scanner on a temple for use in a system for identifying a user of the eyewear device.

[0009] FIGS. 2C and FIGS. 2D are rear views of exemplary hardware configurations of an eyeglass device including two different types of image displays.

[0010] FIG. 3 shows a rear perspective view of the eyeglass device of FIG. 2a, illustrating an infrared emitter, an infrared camera, a front frame, a rear frame, and a circuit board.

[0011] Figure 4 is a cross-sectional view taken through the frame and infrared emitter of the eyeglass device of Figure 3.

[0012] Figure 5 illustrates the detection of the eye gaze direction.

[0013] Figure 6 illustrates the detection of eye position.

[0014] Figure 7 illustrates an example of visible light captured by the left visible light camera as the left raw image and visible light captured by the right visible light camera as the right raw image.

[0015] FIG. 8a illustrates a perspective view of an exemplary hyperextendable eyeglass hinge assembly.

[0016] FIG. 8b is a plan view of the hinge assembly in the overextended position.

[0017] FIG. 8c illustrates a rear perspective view of an overextended hinge assembly.

[0018] FIG. 9a illustrates an upper perspective view of a left temple folded inward from a fixed left temple.

[0019] FIG. 9b illustrates a lower perspective view of a folded left temple closed with respect to a fixed left temple.

[0020] FIG. 10 illustrates a planar cross-sectional view of the left temple in an open position with respect to the left temple.

[0021] FIG. 11 illustrates an upper perspective view of the left temple in an overextended position, illustrating a bushing sliding along the pin.

[0022] FIG. 12 illustrates a left temple that is closed for the left temple and illustrates a recess and a protrusion defined in the cap hinge.

[0023] FIG. 13a is an upper perspective view of a pin positioned within a bushing.

[0024] FIG. 13b illustrates a pin shoulder of the distal end that extends rigidly through an opening of the distal end of the bushing.

[0025] FIG. 13c illustrates a side cross-sectional view illustrating an FPC extending within the left hinge.

[0026] FIG. 13d illustrates a first service loop formed on a bushing when the first temple is in a closed position.

[0027] FIG. 13e illustrates a hinge contracted against a bushing with a spring pushing the shoulder to provide a retraction force.

[0028] FIG. 14a illustrates the left temple in an open position, where the protrusion is seated in the recess.

[0029] FIG. 14b illustrates a hinge that begins to overextend, where the protrusion slides along the edge of the recess, is partially withdrawn from the recess, and forms a cam and a gap.

[0030] FIG. 14c illustrates a fully overextended hinge.

[0031] FIG. 15 illustrates an exploded view of the parts shown as assembled in the previous drawings.

[0032] FIG. 16 illustrates a block diagram of electronic components of an eyeglass device. Specific details for implementing the invention

[0033] The present disclosure relates to an eyewear having a frame, a hinge, and an overextendable temple, wherein the overextendable temple has a flexible printed circuit (FPC) comprising service loops. An extender is coupled to the hinge and the temple, and the extender extends relative to the hinge to allow overextension of the temple relative to the frame. A first service loop allows extension of the FPC when the temple rotates about the hinge, and a second service loop allows the temple to extend radially away from the hinge. The hinge is coupled to the frame, and a portion of the temple that is coupled to the frame or forms part of the frame may be interposed between the frame and the hinge. The extender may form part of the hinge. The extender may include a spring and a bushing that allow overextension of the temple.

[0034] Additional purposes, advantages, and novel features of the examples will be described in part in the following detailed description, and in part will become obvious to those skilled in the art upon review of the following detailed description and the attached drawings, or may be acquired by the creation or operation of the examples. The purposes and advantages of the subject matter of the claims may be realized and achieved by the methodologies, means, and combinations specifically indicated in the appended claims.

[0035] In the following detailed description, numerous specific details are described as examples to provide a complete understanding of the relevant teachings. However, it should be apparent to those skilled in the art that the teachings may be practiced without these details. In other instances, to avoid unnecessarily obscuring aspects of the teachings, well-known methods, procedures, components, and circuitry have been described at a relatively high level without detail.

[0036] As used herein, the term “coupling” refers to any logical, optical, physical, or electrical connection, link, etc., to which signals or light generated or supplied by one system element are imparted to another coupled element. Unless otherwise described, coupled elements or devices do not necessarily have to be directly connected to each other and may be separated by intermediate components, elements, or communication media capable of modifying, manipulating, or transmitting light or signals.

[0037] The orientations of any complete device integrating an eyewear device, associated components, and an eye scanner and camera as depicted in any of the drawings are given as examples merely for the purposes of illustration and discussion. When operating for a specific variable optical processing application, for wallpaper generation and user interaction, the eyewear device may be oriented in any other direction suitable for the specific application of the eyewear device, e.g., up, down, sideways, or any other orientation. Furthermore, as used herein, any directional terms such as forward, backward, inward, outward, toward, left, right, lateral, longitudinal, up, down, upper, lower, top, bottom, and side are used merely as examples and are not limited to the orientation or orientation of any optical device or component of an optical device configured as otherwise described herein.

[0038] Now, references to the examples illustrated in the attached drawings and discussed below are made in detail.

[0039] FIG. 1a is a side view of an exemplary hardware configuration of an eyeglass device (100) comprising a right optical assembly (180B) having an image display (180D) (Fig. 2a). The eyeglass device (100) may include a plurality of visible light cameras (114A-B) (Fig. 7) forming a stereo camera, wherein the right visible light camera (114B) is located on the right temple (110B).

[0040] The left and right visible light cameras (114A-B) have image sensors sensitive to wavelengths in the visible light range. Each of the visible light cameras (114A-B) has a different front-facing coverage angle, for example, the visible light camera (114B) has the illustrated coverage angle (111B). The coverage angle is the angular range in which the image sensors of the visible light cameras (114A-B) pick up electromagnetic radiation to generate images. Examples of these visible light cameras (114A-B) include high-resolution CMOS (complementary metal-oxide-semiconductor) image sensors such as 640p (e.g., 640 x 480 pixels for a total of 0.3 megapixels), 720p, or 1080p, and VGA (video graphic array) cameras. Image sensor data from the visible light cameras (114A-B) is captured along with geolocation data, digitized by an image processor, and stored in memory.

[0041] To provide stereoscopic vision, visible light cameras (114A-B) can be coupled to an image processor for digital processing (element (912) in FIG. 9) along with a timestamp at which an image of the scene is captured. The image processor (912) includes circuitry for receiving signals from visible light cameras (114A-B) and processing these signals from the visible light cameras (114A-B) into a format suitable for storing in memory (element (934) in FIG. 9). Timestamps may be added by the image processor (912) or other processor controlling the operation of the visible light cameras (114A-B). The visible light cameras (114A-B) enable the stereo cameras to simulate human binocular vision. The stereo cameras provide the ability to recreate three-dimensional images (element (715) in FIG. 7) based on two captured images (elements (758A-B) in FIG. 7) from the visible light cameras (114A-B), each having the same timestamp. These three-dimensional images (715) provide, for example, an immersive and realistic experience for virtual reality or video games. Allows for stereoscopic vision, a pair of images (758A-B)—one for each of the left and right visible light cameras (114A-B)—is generated at a given time moment. When the pair of generated images (758A-B) from the forward-facing coverage angles (111A-B) of the left and right visible light cameras (114A-B) are stitched together (e.g., by the image processor (912)), depth perception is provided by the optical assembly (180A-B).

[0042] 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 (110B) extending from the right lateral side (170B) of the frame (105), and a projection image display (180D) (Figs. 2a and 2b) comprising an optical assembly (180B) for presenting a graphic user interface to the user. The eyeglass device (100) includes a left visible light camera (114A) connected to the left temple (110A) or the frame (105) to capture a first image of the scene. The eyeglass device (100) further includes a right visible light camera (114B) connected to the right temple (110B) or the frame (105) to capture a second image of the scene that partially overlaps with the first image (e.g., simultaneously with the left visible light camera (114A)). Although not illustrated in FIG. 1a and FIG. 1b, the user interface field of view adjustment system further includes a processor (932) coupled to the eyeglass device (100) and connected to visible light cameras (114A-B), a memory (934) accessible to the processor (932), and, for example, programming of the memory (934) of the eyeglass device (100) itself or another part of the user interface field of view adjustment system.

[0043] Although not illustrated in FIG. 1a, the eyewear device (100) also includes a head movement tracker (element (109) in FIG. 1b) or an eye movement tracker (element (213) in FIG. 2b). The eyewear device (100) further includes projection image displays (180C-D) of an optical assembly (180A-B) for presenting a sequence of displayed images, and an image display driver (element (942) in FIG. 9) coupled to the projection image displays (180C-D) of the optical assembly (180A-B) to control the image displays (180C-D) of the optical assembly (180A-B) for presenting a sequence of displayed images (715), which are described in more detail below. The eyewear device (100) further includes a memory (934) and a processor (932) having access to the image display driver (942) and the memory (934). The eyeglass device (100) further includes memory programming (element (934) of FIG. 9). The execution of programming by the processor (932) configures the eyeglass device (100) to perform functions including presenting an initial displayed image of a sequence of displayed images through a perspective image display (180C-D), and the initial displayed image has an initial field of view corresponding to an initial head direction or an initial gaze direction (element (230) of FIG. 5).

[0044] The execution of programming by the processor (932) further configures the eyewear device (100) to detect the movement of the user of the eyewear device by (i) tracking the movement of the user's head through a head movement tracker (element (109) in FIG. 1b) or (ii) tracking the movement of the user's eyes through an eye movement tracker (element (213) in FIG. 2b and FIG. 5). The execution of programming by the processor (932) further configures the eyewear device (100) to determine a field of view adjustment for an initial field of view of an initially displayed image based on the detected movement of the user. The field of view adjustment includes a continuous field of view corresponding to a continuous head direction or a continuous eye direction. The execution of programming by the processor (932) further configures the eyewear device (100) to generate a continuous displayed image of a sequence of displayed images based on the field of view adjustment. The execution of programming by the processor (932) additionally configures the eyeglass device (100) to present images continuously displayed through the projection image displays (180C-D) of the optical assembly (180A-B).

[0045] FIG. 1b is a planar cross-sectional view of the right temple of FIG. 1a showing the right visible light camera (114B), the head movement tracker (109), and the circuit board. The configuration and arrangement of the left visible light camera (114A) are substantially similar to the right visible light camera (114B), except that the connections and couplings are on the left lateral side (170A). As illustrated, the eyeglass device (100) includes the right visible light camera (114B) and a circuit board which may be a flexible printed circuit board (140). The right hinge (226B) connects the right temple (110B) to the right temple (125B) of the eyeglass device (100). In some examples, components of the right visible light camera (114B), flexible PCB (140), or other electrical connectors or contacts may be located on the right temple (125B) or right hinge (226B).

[0046] As described, the eyeglass device (100) has a head movement tracker (109) including, for example, an inertial measurement unit (IMU). The inertial measurement unit is an electronic device that measures and reports specific forces, angular velocities, and sometimes magnetic fields surrounding the body using a combination of accelerometers and gyroscopes, and sometimes magnetometers. The inertial measurement unit operates by detecting linear acceleration using one or more accelerometers and detecting rotation rates using one or more gyroscopes. Typical configurations of inertial measurement units include one accelerometer, gyro, and magnetometer per axis for each of the three axes: a horizontal axis (X) for left-right movement, a vertical axis (Y) for up-down movement, and a depth or distance axis (Z) for up-down movement. The accelerometer detects gravity vectors. The magnetometer defines the rotation of the magnetic field (e.g., facing south, north, etc.), like a compass that generates a heading reference. Three accelerometers detect acceleration along the horizontal, vertical, and depth axes defined above, which can be defined for the ground, the eyeglass device (100), or a user wearing the eyeglass device (100).

[0047] The eyeglass device (100) detects the movement of the user of the eyeglass device (100) by tracking the movement of the user's head through a head movement tracker (109). The head movement includes a variation in the direction of the head along a horizontal axis, a vertical axis, or a combination thereof from the initial head direction during the presentation of an image initially displayed on an image display. In one example, tracking the movement of the user's head through the head movement tracker (109) includes measuring the initial head direction along a horizontal axis (e.g., X-axis), a vertical axis (e.g., Y-axis), or a combination thereof (e.g., lateral or diagonal movement) through an inertial measurement unit (109). Tracking the movement of the user's head through the head movement tracker (109) further includes measuring a continuous head direction along a horizontal axis, a vertical axis, or a combination thereof during the presentation of an image initially displayed through an inertial measurement unit (109).

[0048] Tracking the head movement of the user's head through the head movement tracker (109) further includes determining variations in head direction based on both the initial head direction and the subsequent head direction. Detecting the user's movement of the eyeglass device (100) further includes determining, in response to tracking the head movement of the user's head through the head movement tracker (109), that variations in head direction exceed a deviation angle threshold on the horizontal axis, the vertical axis, or a combination thereof. The deviation angle threshold is approximately 3° to 10°. As used herein, when referring to an angle, the term "approximately" means ±10% of the mentioned amount.

[0049] Variations along the horizontal axis slide three-dimensional objects, such as text, Bitmojis, and application icons, in and out of the field of view, for example, by hiding, unhiding, or otherwise adjusting their visibility. Variations along the vertical axis display, for example, weather information, time, date, calendar appointments, etc., when the user looks upward. In another example, the power of the glasses device (100) may be turned off when the user looks downward on the vertical axis.

[0050] The right temple (110B) includes a temple body (211) and a temple cap, the temple cap being omitted in the cross-section of FIG. 1b. Inside the right temple (110B), various interconnected circuit boards, such as PCBs or flexible PCBs, are arranged, including controller circuits for the right visible light camera (114B), microphone(s) (130), speaker(s) (132), low-power wireless circuits (e.g., for wireless short-range network communication via Bluetooth™), and high-speed wireless circuits (e.g., for wireless local area network communication via WiFi).

[0051] The right visible light camera (114B) is placed on or coupled to a flexible PCB (240) and covered by a visible light camera cover lens, which is aimed through an opening(s) formed in the right temple (110B). In some examples, a frame (105) connected to the right temple (110B) includes an opening(s) for the visible light camera cover lens. The frame (105) includes a front-facing side configured to face outward away from the user's eyes. An opening for the visible light camera cover lens is formed on and through the front-facing side. In this example, the right visible light camera (114B) has an outward-facing coverage angle (111B) that has the line of sight or view of the user's right eye of the eyeglass device (100). The visible light camera cover lens may also be attached to the outward-facing surface of the right temple (110B) which has an outward-facing coverage angle but has an opening formed in a different outward direction. Coupling can also be indirect through intervening components.

[0052] The left (first) visible light camera (114A) is connected to the left perspective image display (180C) of the left optical assembly (180A) to create a first background scene of the first continuously displayed image. The right (second) visible light camera (114B) is connected to the right perspective image display (180D) of the right optical assembly (180B) to create a second background scene of the second continuously displayed image. The first background scene and the second background scene are partially superimposed to present a three-dimensional observable area of ​​the continuously displayed image.

[0053] The flexible PCB (140) is placed inside the right temple (110B) and coupled to one or more other components housed in the right temple (110B). Although shown as being formed on the circuit boards of the right temple (110B), the right visible light camera (114B) may be formed on the circuit boards of the left temple (110A), the temples (125A-B), or the frame (105).

[0054] FIG. 2a is a rear view of an exemplary hardware configuration of an eyewear device (100) including an eye scanner (113) on a frame (105) for use in a system for determining the eye position and gaze direction of a wearer / user of the eyewear device (100). As shown in FIG. 2a, the eyewear device (100) takes the form configured for wearing by a user, which is eyeglasses in the example of FIG. 2a. The eyewear device (100) may take other forms and may include other types of frameworks, such as headgear, a headset, or a helmet.

[0055] In the example of eyeglasses, the eyeglass device (100) comprises a frame (105) including a left rim (107A) connected to a right rim (107B) via a bridge (106) adapted to the user's nose. The left and right rims (107A-B) include individual apertures (175A-B) that hold individual optical elements (180A-B), such as lenses and viewing displays (180C-D). The term lens as used herein is intended to cover a piece of transparent or translucent glass or plastic having curved and flat surfaces that cause light to converge / disperse or cause little or no convergence / dispersion.

[0056] Although illustrated as having two optical elements (180A-B), the eyeglass device (100) may include other arrangements, such as a single optical element, depending on the intended user or application of the eyeglass device (100). As additionally illustrated, the eyeglass device (100) includes a left temple (110A) adjacent to the left lateral side (170A) of the frame (105) and a right temple (110B) adjacent to the right lateral side (170B) of the frame (105). The temples (110A-B) may be integrated within the frame (105) on individual sides (170A-B) (as illustrated) or implemented as separate components attached to the frame (105) on individual sides (170A-B). Alternatively, the temples (110A-B) can be integrated into the temples (not shown) attached to the frame (105).

[0057] In the example of FIG. 2a, 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, but in one example, the infrared camera (120) is a visible light camera such as a low-resolution VGA (video graphic array) camera (e.g., 640 x 480 pixels for a total of 0.3 megapixels), and the blue filter is removed. The infrared emitter (115) and the infrared camera (120) are co-located on the frame (105), for example, both are shown connected to the upper part of the left edge (107A). One or more of the frame (105) or the left and right temples (110A-B) include a circuit board (not shown) containing the infrared emitter (115) and the infrared camera (120). The infrared emitter (115) and infrared camera (120) can be connected to a circuit board, for example, by soldering.

[0058] Other arrangements of the infrared emitter (115) and the infrared camera (120) may be implemented, including arrangements where both the infrared emitter (115) and the infrared camera (120) are on the right edge (107B) or at other locations on the frame (105), for example, the infrared emitter (115) is on the left edge (107A) and the infrared camera (120) is on the right edge (107B). In another example, the infrared emitter (115) is on the frame (105) and the infrared camera (120) is on one of the temples (110A-B), or vice versa. The infrared emitter (115) can essentially be connected to any location on the frame (105), the left temple (110A), or the right temple (110B) to emit a pattern of infrared light. Similarly, an infrared camera (120) is essentially connected to any location on the frame (105), the left temple (110A), or the right temple (110B) to capture at least one reflection variation of the emitted pattern of infrared light.

[0059] The infrared emitter (115) and infrared camera (120) are arranged to face inward toward the user's eyes to identify individual eye positions and gaze directions in a partial or full field of view of the eyes. For example, the infrared emitter (115) and infrared camera (120) are positioned directly in front of the eyes on the upper part of the frame (105) or on the temples (110A-B) at both ends of the frame (105).

[0060] FIG. 2b is a rear view of an exemplary hardware configuration of another eyewear device (200). In this exemplary configuration, the eyewear device (200) is illustrated as including an eye scanner (213) on the right temple (210B). As illustrated, an infrared emitter (215) and an infrared camera (220) are co-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 of the eyewear device (200), such as the frame (105). The infrared emitter (215) and the infrared camera (220) are similar to those of FIG. 2a, but the eye scanner (213) may be varied to be sensitive to different light wavelengths as previously described in FIG. 2a.

[0061] Similar to FIG. 2a, the eyeglass device (200) includes a frame (105) comprising a left edge (107A) connected to a right edge (107B) via a bridge (106); and the left and right edges (107A-B) include individual apertures that hold individual optical elements (180A-B) including a see-through display (180C-D).

[0062] FIGS. 2c and 2d are rear views of exemplary hardware configurations of an eyewear device (100) comprising two different types of projection image displays (180C-D). In one example, these projection image displays (180C-D) of an optical assembly (180A-B) include an integrated image display. As illustrated in FIG. 2c, the optical assemblies (180A-B) include a suitable display matrix (180C-D) of any suitable type, such as a liquid crystal display (LCD), an organic light-emitting diode (OLED) display, a waveguide display, or any other such display. The optical assembly (180A-B) also includes an optical layer or layers (176) that may include lenses, optical coatings, prisms, mirrors, waveguides, optical strips, and other optical components in any combination. The optical layers (176A-N) may include a prism having a suitable size and configuration, comprising a first surface for receiving light from a display matrix and a second surface for emitting light to the user's eye. The prism of the optical layers (176A-N) extends across all or at least part of the individual apertures (175A-B) formed in the left and right edges (107A-B) so as to allow the user to see the second surface of the prism when the user's eye is looking through the corresponding left and right edges (107A-B). The first surface of the prism of the optical layers (176A-N) faces upward from the frame (105), and the display matrix is ​​placed over the prism so that photons and light emitted by the display matrix strike the first surface. The prism is sized and shaped so that light is refracted within the prism and directed toward the user's eye by the second surface of the prism of the optical layers (176A-N). In this regard, the second surface of the prism of the optical layers (176A-N) may be convex to direct light toward the center of the eye.The prism can be optionally sized and shaped to enlarge the image projected by the projection image displays (180C-D), and light travels through the prism such that the image seen from the second surface is larger in one or more dimensions than the image emitted from the projection image displays (180C-D).

[0063] In another example, the projection image displays (180C-D) of the optical assembly (180A-B) include a projection image display as illustrated in FIG. 2d. The optical assembly (180A-B) includes a laser projector (150), which is a 3-color laser projector using a scanning mirror or a galvanometer. During operation, a light source such as the laser projector (150) is placed on or on one of the temples (125A-B) of the eyeglass device (100). The optical assembly (180A-B) includes one or more optical strips (155A-N) spaced apart across the width of the lens of the optical assembly (180A-B) or across the depth of the lens between the front surface and the rear surface of the lens.

[0064] As photons projected by the laser projector (150) travel across the lenses of the optical assembly (180A-B), the photons encounter the optical strips (155A-N). When a specific photon encounters a specific optical strip, the photon is redirected toward the user's eye or is passed to the next optical strip. A combination of modulation of the laser projector (150) and modulation of the optical strips can control specific photons or light beams. In one example, a processor controls the optical strips (155A-N) by initiating mechanical, acoustic, or electromagnetic signals. Although illustrated as having two optical assemblies (180A-B), the eyeglass device (100) may include other arrangements such as a single or three optical assemblies, or the optical assemblies (180A-B) may arrange different arrangements depending on the intended user or application of the eyeglass device (100).

[0065] As additionally illustrated in FIG. 2c-d, the eyewear device (100) includes a left temple (110A) adjacent to the left lateral side (170A) of the frame (105) and a right temple (110B) adjacent to the right lateral side (170B) of the frame (105). The temples (110A-B) may be incorporated within the frame (105) on the individual lateral sides (170A-B) (as illustrated) or implemented as separate components attached to the frame (105) on the individual sides (170A-B). Alternatively, the temples (110A-B) may be incorporated into temples (125A-B) attached to the frame (105).

[0066] In one example, the projection image displays include a first projection image display (180C) and a second projection image display (180D). The eyewear device (100) includes first and second apertures (175A-B) that hold individual first and second optical assemblies (180A-B). The first optical assembly (180A) includes first projection image displays (180C) (e.g., the display matrix or optical strips (155A-N') and projector (150A) of FIG. 2c). The second optical assembly (180B) includes second perspective image displays (180D) (e.g., display matrix or optical strips (155A-N) of FIG. 2c and projector (150B)). The continuous field of view of the continuously displayed images includes a field of view of about 15° to 30°, more specifically 24°, when measured horizontally, vertically, or diagonally. The continuously displayed images having a continuous field of view represent a visible combined three-dimensional observable area by stitching together two displayed images presented on the first and second image displays.

[0067] As used herein, “field of view” describes the angular range of the field of view associated with the displayed images presented on the left and right image displays (180C-D), respectively, of the optical assembly (180A-B). “Coverage angle” describes the angular range that the lens of the visible light cameras (114A-B) or the infrared camera (220) can image. Typically, the image circle generated by the lens is large enough to completely cover the film or sensor, perhaps including some vignetting (i.e., a decrease in the brightness or saturation of the image toward the periphery relative to the center of the image). If the lens’s coverage angle does not fill the sensor, the image circle will typically be visible with strong vignetting toward the edges, and the effective field of view will be limited to the coverage angle. "Field of view" is intended to describe a field of observable area that a user of the eyeglass device (100) can see through their eyes through displayed images presented on the left and right image displays (180C-D) of the optical assembly (180A-B). The image display (180C) of the optical assembly (180A-B) may have a field of view with a coverage angle of 15° to 30°, e.g. 24°, and may have a resolution of 480 x 480 pixels.

[0068] FIG. 3 illustrates a rear perspective view of the eyeglass device of FIG. 2a. The eyeglass device (100) includes an infrared emitter (215), an infrared camera (220), a front frame (330), a back frame (335), and a circuit board (340). FIG. 3 shows that the upper portion of the left edge of the frame of the eyeglass device (100) includes the front frame (330) and the back frame (335). An opening for the infrared emitter (215) is formed on the back frame (335).

[0069] As shown in circular cross-section 4 of the upper central part of the left edge of the frame, a circuit board, which is a flexible PCB (340), is interposed between the front side (330) of the frame and the back side (335) of the frame. Additionally, the attachment of the left temple (110A) to the left temple (325A) via the left hinge (326A) is further illustrated in detail. 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).

[0070] FIG. 4 is a cross-sectional view through a frame corresponding to an infrared emitter (215) and a circular cross-section 4 of the eyeglass device of FIG. 3. As the frame is illustrated as including a frame front surface (330) and a frame back surface (335), a plurality of layers of the eyeglass device (100) are illustrated in the cross-section of FIG. 4. A flexible PCB (340) is placed on the frame front surface (330) and connected to the frame back surface (335). An infrared emitter (215) is placed on the flexible PCB (340) and covered by an infrared emitter cover lens (445). For example, the infrared emitter (215) is reflowed to the back surface of the flexible PCB (340). Reflow attaches an infrared emitter (215) to contact pad(s) formed on the back surface of the flexible PCB (340) by subjecting the flexible PCB (340) to controlled heat—which melts the solder paste to connect the two components. In one example, reflow is used to surface mount the infrared emitter (215) on the flexible PCB (340) and electrically connect the two components. However, it should be understood that through holes may be used to connect leads from the infrared emitter (215) to the flexible PCB (340), for example, through interconnections.

[0071] The back of the frame (335) includes an infrared emitter opening (450) for an infrared emitter cover lens (445). The infrared emitter opening (450) is formed on the rear-facing side of the back of the frame (335) configured to face inward toward the user's eyes. In the example, the flexible PCB (340) can be connected to the front of the frame (330) via flexible PCB adhesive (460). The infrared emitter cover lens (445) can be connected to the back of the frame (335) via infrared emitter cover lens adhesive (455). The coupling can also be indirect through interposed components.

[0072] In one example, the processor (932) utilizes an eye tracker (213) to determine the gaze direction (230) of the wearer's eye (234) as shown in FIG. 5 and the eye position (236) of the wearer's eye (234) within the eyebox as shown in FIG. 6. 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) into a captured image of reflection fluctuations of infrared light from the eye (234) to determine the gaze direction (230) of the pupil (232) of the eye (234) and also the eye position (236) relative to the viewing display (180D).

[0073] FIG. 7 illustrates an example of capturing visible light with a camera. Visible light is captured by a left visible light camera (114A) having a left visible light camera field of view (111A) as a left raw image (758A). Visible light is captured by a right visible light camera (114B) having a right visible light camera field of view (111B) as a right raw image (758B). Based on the processing of the left raw image (758A) and the right raw image (758B), a three-dimensional depth map (715) of a three-dimensional scene, referred to as an image below, is generated by a processor (932).

[0074] FIG. 8a illustrates a perspective view of an exemplary overextendable eyeglass hinge assembly (1000) comprising a hinge (1001) rotatably fixed to a cap hinge (1006) and configured to allow rotation of the left temple (125A) relative to the fixed left temple (110A). The left temple (110A) may form part of the frame (105) as illustrated, and the left temple (110A) may also be considered as an extension of the frame. The cap hinge (1006) is fixed to the distal end of the left temple (110A) by a screw boss (1009) as illustrated in FIG. 11. An elongated pin (1010) is fixed to the hinge (1001) and extends radially from the hinge (1001). The slender pin (1010) is dual-purpose and is configured to allow an over-stretched outward rotation of the left temple (125A) relative to the left temple (110A), as illustrated in FIGS. 8A, 8B, and 8C. The slender pin (1010) is also configured to allow a linear extension of the left temple (125A) along the slender pin (1010) and axially from the hinge (1001). This hinge assembly (1000) may also be provided between the right temple (110B) and the right temple (125B).

[0075] FIG. 8b is a plan view of a hinge assembly (1000) in an overstretched position. An outwardly extending projection (1002) is positioned on the flange of a cap hinge (1006), and the projection (1002) faces a recess (1004) formed in a cosmetic trim (1008) that is fixed to the proximal end of the left temple (125A). The projection (1002) extends laterally and functions as a cam when the left temple (125A) is overstretched, so that the projection (1002) leverages the cosmetic trim (1008) and creates a gap (1007) between the sharp corner edges of the temples that would otherwise have worn out, as also shown in FIG. 12.

[0076] FIG. 8c illustrates a rear perspective view of an overextended hinge assembly (1000). As illustrated, the hinge (1001) is positioned on the cap hinge (1006). Features will be further discussed with reference to FIG. 14a through 14c.

[0077] FIG. 9a illustrates an upper perspective view of a left temple (125A) folded inward from a fixed left temple (110A). The proximal end of the cosmetic trim (1008) facing the cap hinge (1006) includes an elongated recess (1004). The recess (1004) corresponds in shape and size to the protrusion (1002) and accommodates the protrusion (1002) when the left temple (125) is in an open (not overextended) position. When the hinge (1001) is rotated outward from the open position to the overextended position as shown in FIG. 8b, the protrusion (1002) slides laterally outward from the recess (1004) and functions as a cam to create leverage and a gap (1007) as previously discussed. In other examples, the protrusion (1002) and recess (1004) may have other shapes, such as a simply rounded protrusion and a rounded recess forming a dimple, and no limitation is inferred for each specific shape. The elongated protrusion (1002) and elongated recess (1004) are preferred shapes because they better align the left temple (125A) with respect to the left temple (110A) so that it rotates outwardly, such as at a 90-degree angle.

[0078] FIG. 9b illustrates a lower perspective view of a folded left temple (125A) closed with respect to a fixed left temple (110A). Note that the flexible printed circuit (FPC) is enclosed in the hinge (1001) and is not visible, as will be discussed further briefly.

[0079] FIG. 10 illustrates a planar cross-sectional view of the left temple (125A) in an open position relative to the left temple (110A). As illustrated, the protrusion (1002) is seated in the recess (1004). FIG. 10 illustrates an elongated pin (1010) that is rigidly coupled to the hinge (1001) at the proximal end and extends longitudinally within the left temple (125A). The pin (1010) is positioned within a spring (1012) and surrounded by the spring (1012), which is secured within a rectangular bushing (1014). The sliding pin has a shoulder (1016) at the distal end positioned outside the bushing (1014). The shoulder (1016) restricts the movement of the bushing (1014) along the sliding pin (1010) when the left temple (125A) is fully overextended as shown in FIG. 11. The FPC (1022) is shown extending within the left temple (125A) and under the guide member (1024), and has a pair of strain relief loops to assist in overextending and closing the left temple (125A) as will be discussed shortly.

[0080] FIG. 11 illustrates an upper perspective view of a left temple (125A) in an overextended position, illustrating a bushing (1014) that slides along a pin (1010) and engages with a shoulder (1016) that extends to the distal end of the pin (1010) and restricts the movement of the bushing (1014). This creates a gap (1017) between the hinge (1001) and the bushing (1014). In this position, the spring (1012) is fully compressed, which creates a slight bias force that helps the left temple (125A) to be comfortably compressed against the user's head and to hold the eyewear on the user. The hinge (1001) has a flange (1003) having a narrowed web (1005) configured to function as a soft radius for the FPC (1022) to bend. The flange (1003) may be designed to provide a rotation hardstop, but the hardstop functionality for overextension of the temple is provided by the shoulder (1016) on the pin (1010). The fastener (1020) is positioned on the friction clip (1032) and extends within the hinge (1001) to secure the left temple (125A) to the left temple (110A).

[0081] FIG. 12 illustrates a left temple (125A) closed with respect to a left temple (110A), and illustrates a recess (1004) and a protrusion (1002) defined in a cap hinge (1006) as previously described.

[0082] FIG. 13a is a top perspective view of a pin (1010) positioned within a bushing (1014). The pin (1010) has a rectangular shoulder (1018) at its distal end that extends rigidly through an opening (1021) at the distal end of the bushing (1014), as shown in FIG. 13b. The shoulder (1018) has the same size and shape as the bushing opening (1021). The shoulder (1018) engages with the distal end of the spring (1012) to retain and compress the spring (1012) within the bushing (1014) in an overextended position. The shoulder (1018) also functions to reduce the amount of rotation of the shaft on its central axis. By making the shoulder (1018) wider than the rest of the pin (1010), the shoulder (1018) contacts the bushing (1014) at a smaller angle. The fastener (1030) secures the proximal end of the pin (1010) to the hinge (1001). The hinge (1001) is rotatably positioned on the cap hinge (1006).

[0083] FIG. 13c illustrates a side cross-sectional view illustrating an FPC (1022) extending within a left temple (125A) as previously described in relation to FIG. 10. The left temple (125A) has a guide member (1024) (Fig. 10) that forms a first channel (1027) for receiving the FPC (1022) and forms a first service loop (1026) for the FPC (1022). As discussed in relation to FIG. 11, the first service loop (1026) forms a strain relief that straightens the FPC (1022) when the bushing (1014) slides outward in an over-extended position. The hinge (1001) has a second channel (1028) formed therein that accommodates the FPC (1022) and forms a second service loop (1034) while the hinge rotates from a closed position to an open position and an overextended position and the bushing (1014) extends along the pin (1010). The first service loop (1026) and the second service loop (1034) are separated from each other by the hinge (1001) and are positioned on opposite sides of the second channel (1028).

[0084] FIG. 13d illustrates a first service loop (1026) formed on the bushing (1014) when the first temple (125A) is in a closed position. This first service loop (1026) is straightened when the bushing (1014) extends along the length of the pin (1010) and the FPC (1022) slides within the first channel (1027).

[0085] FIG. 13e illustrates a hinge (1001) retracted to a bushing (1014) together with a spring (1012) that pushes the shoulder (1016) to provide a retraction force.

[0086] Referring to FIGS. 14a, 14b, and 14c, as previously described in relation to FIG. 8b, the progression of a protrusion (1002) that slides out of the recess (1004) of the cap hinge (1006) and forms a cam as the hinge (1001) is overextended is illustrated.

[0087] FIG. 14a illustrates the left temple (125A) in an open position, where the protrusion (1002) is seated in the recess (1004). As the hinge (1000) begins to overextend, as shown in FIG. 14b, the protrusion (1002) slides along the edge of the recess (1004), is partially withdrawn from the recess (1004), and forms a cam and gap (1007). The bushing (1014) slides partially along the pin (1010). As shown in FIG. 14c, the hinge (1000) is fully overextended, and the protrusion (1002) is fully withdrawn from the recess (1004). Here, the bushing (1014) is fully extended along the pin (1010) as shown in FIG. 11 and engages with the shoulder (1018). Both the protrusion (1002) and the recess (1004) are elongated to guide the left temple (125A) to an overstretched position, such as 110 degrees relative to the left temple (110A), in a predetermined direction.

[0088] FIG. 15 illustrates an exploded view of the parts shown as assembled in the previous drawings. A piece of foam tape (1028) may be used to help hold the FPC (1022) inside the hinge (1000), which is optional.

[0089] FIG. 16 illustrates a high-level functional block diagram including exemplary electronic components placed in eyeglasses (100, 200). The exemplary electronic components include a processor (932), memory (934), and a viewing image display (180C and 180D).

[0090] The memory (934) includes instructions for the processor (932) to control the image (715) and instructions for execution by the processor (932) to implement the functionality of the glasses (100 / 200). The processor (932) receives power from a battery (not shown) and executes the instructions stored in the memory (934), or performs the functionality of the glasses (100 / 200) which is integrated on-chip with the processor (932) and communicates with external devices via wireless connections.

[0091] The user interface adjustment system (900) includes a wearable device, which is an eyewear device (100) having an eye movement tracker (213) (e.g., illustrated in FIG. 2b as an infrared emitter (215) and an infrared camera (220)). The user interface adjustment system (900) also includes a server system (998) and a mobile device (990) connected via various networks. The mobile device (990) may be a smartphone, tablet, laptop computer, access point, or any other such device capable of connecting to the eyewear 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) may include any combination of wired and wireless connections.

[0092] The eyeglass device (100) may include at least two visible light cameras (114A-B) (one associated with the left lateral side (170A) and one associated with the right lateral side (170B). The eyeglass device (100) further includes two viewing image displays (180C-D) of an optical assembly (180A-B) (one associated with the left lateral side (170A) and one associated with the right lateral side (170B)). The eyeglass device (100) also includes an image display driver (942), an image processor (912), a low-power circuit (920), and a high-speed circuit (930). For the eyeglass device (100), the components illustrated in FIG. 9 are located on one or more circuit boards, e.g., a PCB or a flexible PCB, in the temples. Alternatively or additionally, the illustrated components may be located on the temples, frames, hinges, or bridges of the eyeglass device (100). The left and right visible light cameras (114A-B) may include any other individual visible or light capture elements that can be used to capture data including images of a scene having digital camera elements, such as a CMOS (complementary metal-oxide-semiconductor) image sensor, a charge coupling device, a lens, or unknown objects.

[0093] Eye movement tracking programming (945) implements user interface field of view adjustment commands, including causing the eyewear device (100) to track the eye movements of the user's eyes of the eyewear device (100) through the eye movement tracker (213). Other implemented commands (functions) cause the eyewear device (100) to determine a field of view adjustment for the initial field of view of the initially displayed image based on the user's detected eye movements corresponding to the continuous eye direction. Additional implemented commands generate a sequence of continuously displayed images based on the field of view adjustment. The continuously displayed images are generated as a visible output to the user through the user interface. This visible output appears on the projection image displays (180C-D) of the optical assembly (180A-B), which is driven by an image display driver (942) to present a sequence of displayed images, including an initial displayed image with an initial field of view and a continuously displayed image with a continuous field of view.

[0094] As illustrated in FIG. 16, the high-speed circuit section (930) includes a high-speed processor (932), memory (934), and a high-speed wireless circuit section (936). In the example, an image display driver (942) is coupled to the high-speed circuit section (930) and operated by the high-speed processor (932) to drive the left and right image displays (180C-D) of the optical assembly (180A-B). The high-speed processor (932) may be any processor capable of managing high-speed communications and operations of any general computing system required for the eyeglass device (100). The high-speed processor (932) includes processing resources necessary to manage high-speed data transmissions over a high-speed wireless connection (937) to a wireless local area network (WLAN) using the high-speed wireless circuit section (936). In certain examples, the high-speed processor (932) runs an operating system such as a LINUX operating system or another such operating system of the eyewear device (100), and the operating system is stored in memory (934) for execution. In addition to any other responsibilities, the high-speed processor (932) running the software architecture for the eyewear device (100) is used to manage data transmissions together with the high-speed wireless circuitry (936). In certain examples, the high-speed wireless circuitry (936) is configured to implement the IEEE (Institute of Electrical and Electronic Engineers) 802.11 communication standards, also referred to herein as Wi-Fi. In other examples, other high-speed communication standards may be implemented by the high-speed wireless circuitry (936).

[0095] The low-power wireless circuit (924) and high-speed wireless circuit (936) of the eyewear device (100) may include short-range transceivers (Bluetooth™) and wireless wide-area, local, or wide-area network transceivers (e.g., cellular or WiFi). A mobile device (990) including transceivers communicating via a low-power wireless connection (925) and a high-speed wireless connection (937) may be implemented using the details of the architecture of the eyewear device (100), just like other elements of the network (995).

[0096] The memory (934) includes any storage device capable of storing various data and applications, including, among other things, color maps, left and right visible light cameras (114A-B), and camera data generated by the image processor (912), as well as images generated for display by the image display driver (942) on the projection image displays (180C-D) of the optical assembly (180A-B). Although the memory (934) is shown as being integrated with the high-speed circuit (930), in other examples, the memory (934) may be an independent, self-contained element of the eyewear device (100). In these specific examples, electrical routing lines may provide a connection through a chip containing the high-speed processor (932) from the image processor (912) or the low-power processor (922) to the memory (934). In other examples, the high-speed processor (932) can manage the addressing of memory (934) so ​​that the low-power processor (922) boots the high-speed processor (932) whenever a read or write operation involving memory (934) is required.

[0097] The server system (998) may be one or more computing devices as part of a network computing system or service, for example, including a processor, memory, and a network communication interface for communicating with a mobile device (990) and an eyewear device (100) via a network (995). The eyewear device (100) is connected to a host computer. For example, the eyewear 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).

[0098] The output components of the eyeglass device (100) include visual components such as left and right image displays (180C-D) of the optical assembly (180A-B) described in FIG. 2c and 2d (e.g., displays such as an LCD (liquid crystal display), PDP (plasma display panel), LED (light emitting diode) display, projector, or waveguide). The image displays (180C-D) of the optical assembly (180A-B) are driven by an image display driver (942). The output components of the eyeglass device (100) further include acoustic components (e.g., speakers), haptic components (e.g., vibration motors), other signal generators, etc. Input components of the eyeglass device (100), mobile device (990), and server system (998) may include alphanumeric input components (e.g., keyboard, touch screen configured to receive alphanumeric input, photo-optical keyboard, or other alphanumeric input components), point-based input components (e.g., mouse, touchpad, trackball, joystick, motion sensor, or other pointing mechanism), tactile input components (e.g., physical button, touch screen providing location and force of touches or touch gestures, or other tactile input components), audio input components (e.g., microphone), etc.

[0099] The eyewear device (100) may optionally include additional peripheral device elements (919). These peripheral device elements may include biometric sensors, additional sensors, or display elements integrated with the eyewear device (100). For example, the peripheral device elements (919) may include output components, motion components, position components, or any I / O components including any other such elements described herein. The eyewear device (100) may take on different forms and may include different types of frameworks, such as headgear, headset, or helmet.

[0100] For example, the biometric components of the user interface field of view adjustment (900) include components for detecting expressions (e.g., hand expressions, facial expressions, voice expressions, body gestures, or eye tracking), measuring biosignals (e.g., blood pressure, heart rate, body temperature, sweating, or brain waves), and identifying a person (e.g., voice identification, retinal identification, face identification, fingerprint identification, or electroencephalogram-based identification). Motion components include acceleration sensor components (e.g., accelerometers), gravity sensor components, rotation sensor components (e.g., gyroscopes), etc. Position components include location sensor components for generating location coordinates (e.g., GPS (global positioning system) receiver components), WiFi or Bluetooth™ transceivers for generating positioning system coordinates, altitude sensor components (e.g., barometers or altimeters for detecting atmospheric pressure from which altitude can be derived), orientation sensor components (e.g., magnetometers), etc. These positioning system coordinates can also be received from a mobile device (990) via wireless connections (925 and 937) through a low-power wireless circuit (924) or a high-speed wireless circuit (936).

[0101] According to some examples, an “application” or “applications” is a program(s) that executes functions defined in programs. Various programming languages ​​may be used to create one or more applications structured in various ways, such as object-oriented programming languages ​​(e.g., Objective-C, Java, or C++) or procedural programming languages ​​(e.g., C or assembly languages). In a specific example, a third-party application (e.g., an application developed using the ANDROID™ or IOS™ SDK (software development kit) by an entity other than the vendor of a specific platform) may be mobile software running on a mobile operating system such as IOS™, ANDROID™, WINDOWS®Phone, or other mobile operating systems. In this example, the third-party application may invoke API calls provided by the operating system to facilitate the functionality described herein.

[0102] It will be understood that the terms and expressions used herein have their ordinary meanings according to such terms and expressions for their corresponding individual areas of investigation and study, except where a specific meaning is otherwise described herein. Correlative terms such as First, Second, etc., may be used merely to distinguish one entity or action from another and do not necessarily require or imply any actual such relationship or order between such entities or actions. The terms “include,” “comprising,” or any other variations thereof are intended to cover non-exclusive inclusion so that a process, method, article, or device comprising a list of elements or steps may include not only those elements or steps but also other elements or steps inherent in or not explicitly listed in such process, method, article, or device. An element expressed in the singular does not, without further restriction, exclude the presence of additional identical elements in a process, method, article, or device comprising that element.

[0103] Unless otherwise stated, all measurements, values, grades, positions, sizes, dimensions, and other specifications described herein, including the following claims, are not precise but approximate. These quantities are intended to have a reasonable range consistent with the functions to which they relate and customary practices in the field to which they belong. For example, unless otherwise explicitly stated, parameter values, etc., may vary by ± 10% from the stated quantities.

[0104] Furthermore, in the detailed description above, it can be seen that various features in various examples are grouped together to simplify the disclosure. This method of disclosure is not to be interpreted as reflecting an intention that the claimed examples require more features than explicitly cited in each claim. Rather, as reflected in the following claims, the subject matter to be protected is less than all the features of any single disclosed example. Accordingly, the following claims are incorporated into the detailed description, and each claim asserts itself as a separately claimed subject matter.

[0105] Although the foregoing has described what is considered to be the best mode and / or other examples, it is understood that various modifications may be made therein and that the subject matter of the claims disclosed herein may be embodied in various forms and examples, which are applicable to numerous applications, some of which are described herein. The following claims are intended to claim any and all modifications and variations within the true scope of the concepts.

Claims

Claim 1 As eyewear, a frame having a frame surface; an optical member supported by said frame; a temple; a hinge coupled between said frame and said temple — said hinge configured to allow rotation of said temple relative to said frame —; an extender configured to allow said temple to extend to a hyperextended position away from said hinge; an electrical conductor coupled to said hinge — said electrical conductor having a first service loop configured to allow said electrical conductor to extend when said temple extends to the hyperextended position away from said hinge, and a second service loop configured to allow said electrical conductor to extend when said temple rotates about said hinge —; Eyeglasses, comprising a projection extending from the frame surface, wherein the projection is configured to create a cam when the temple is in the overstretched position, and the temple has a temple surface, and the temple surface includes a recess configured to receive the projection when the temple is in the open position. Claim 2 In claim 1, the first service loop is separated from the second service loop, eyeglasses. Claim 3 In claim 2, the hinge is interposed between the first service loop and the second service loop, the eyeglasses. Claim 4 In claim 3, the electric conductor is fixed to the hinge between the first service loop and the second service loop, eyeglasses. Claim 5 The eyeglasses of claim 1, wherein the extender includes an extension member coupled to the hinge, and the temple is configured to extend along the extension member when extended to the overextended position. Claim 6 In claim 5, the eyeglasses further comprising a limiting member configured to limit the travel distance of the temple along the extension member. Claim 7 In claim 1, the cam is configured to create a gap between the frame and the temple when the temple is overextended. Claim 8 In claim 1, the electric conductor comprises a flexible printed circuit (FPC) fixed between the first service loop and the second service loop, eyeglasses. Claim 9 Eyeglasses comprising: a frame; an optical member supported by said frame; a temple; a hinge coupled between said frame and said temple ― said hinge is configured to allow rotation of said temple relative to said frame ―; an extender configured to allow said temple to extend to an overextended position away from said hinge ― said extender comprises a sliding bushing coupled to said temple, said bushing comprises a spring configured to extend around said extender ―; and an electrical conductor coupled to said hinge, said electrical conductor comprising a first service loop configured to allow said electrical conductor to extend when said temple to extend to an overextended position away from said hinge, and a second service loop configured to allow said electrical conductor to extend when said temple to rotate around said hinge. Claim 10 In claim 9, the spring is configured to enable the temple to extend radially from the hinge and also to generate a bias force that contracts the temple toward the hinge. Claim 11 In claim 9, the spring is configured to generate a deflection force such that the bushing is compressed against the bushing when the bushing extends from the hinge, and the temple is retracted toward the hinge. Claim 12 In claim 9, the spring is at least partially located within the bushing, eyeglasses. Claim 13 As eyeglasses, a frame having a frame surface; an optical member supported by said frame; a temple; a hinge coupled between said frame and said temple ― said hinge is configured to allow rotation of said temple relative to said frame ―; an extender coupled to said hinge ― said extender is configured to generate a deflection force configured to allow said temple to extend to an overextended position away from said hinge and to selectively retract said temple toward said hinge ―; an electrical conductor coupled to said hinge ― said electrical conductor has a first service loop configured to allow said electrical conductor to extend when said temple extends to an overextended position away from said hinge, and a second service loop configured to allow said electrical conductor to extend when said temple rotates about said hinge ―; Eyeglasses, comprising a protrusion extending from the frame surface, wherein the protrusion is configured to create a cam when the temple is in the overextended position, and the temple has a temple surface, wherein the temple surface includes a recess configured to receive the protrusion when the temple is in the open position. Claim 14 In claim 13, the first service loop is separated from the second service loop, eyeglasses. Claim 15 In claim 14, the hinge is interposed between the first service loop and the second service loop, the eyeglasses. Claim 16 In claim 15, the eyeglasses, wherein the electric conductor comprises a flexible printed circuit (FPC) fixed to the hinge between the first service loop and the second service loop. Claim 17 In claim 13, the extension comprises a longitudinal extension member extending away from the hinge, the eyeglasses. Claim 18 In claim 17, the eyeglasses further comprising a bushing slidably coupled to the longitudinal extension member and a spring coupled to the bushing. Claim 19 In claim 18, the spring is configured to enable the temple to extend radially from the hinge and also to generate a deflection force that contracts the temple toward the hinge, eyeglasses. Claim 20 delete

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