Goggle display with offset bond

Abstract

Eyewear includes a multi-layer display having adhesive (482) bonding the layers together at an offset distance (OFF) inward from outer edges of the layers. The display has an image display layer, such as a light waveguide in one example, and a pair of layers surrounding the image display layer and which can include optically transparent substrates such as glass. Respective adhesives are positioned between the image display layer and each of the pair of layers at an offset distance inward from the outer edges of the display layers to reduce stress in the display. Each of the adhesives can be a continuous bead so that there is no adhesive between the pair of layers and the image display layer at the outer edges. In one example, the offset distance can be at least twice the thickness of the image display layer to reduce stress in the image display layer.

Description

[0001] Cross-references to related applications

[0002] This application claims priority to U.S. Application Serial No. 17 / 115,244, filed December 8, 2020, the entire contents of which are incorporated herein by reference. Technical Field

[0003] This topic relates to a type of goggle device, such as smart glasses and see-through displays. Background Technology

[0004] Portable goggle devices available today (such as smart glasses, headgear, and headgear) include electronics such as cameras and displays. Attached Figure Description

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

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

[0007] Figure 1B yes Figure 1A A top cross-sectional view of the temple of the goggle device, depicting a visible light camera, a head movement tracker for tracking the user's head movement in the goggle device, and a circuit board;

[0008] Figure 2A This is a rear view of an exemplary hardware configuration of a goggle device, which includes an eye scanner on the frame for use in the system to identify the user of the goggle device.

[0009] Figure 2B This is a rear view of an exemplary hardware configuration for another goggle device, which includes an eye scanner on the temple for use in the system to identify the user of the goggle device.

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

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

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

[0013] Figure 4B and Figure 4C The waveguide of the display is shown to be formed as a waveguide stack with multiple layers;

[0014] Figure 4D It shows Figure 4C waveguide stack and Figure 4E Structural analysis of waveguide stacks;

[0015] Figure 4E , Figure 4F and Figure 4G This illustrates a bonded waveguide stack that minimizes stress at the waveguide edge by positioning the adhesive inward from the outer edge of the display.

[0016] Figure 4H A waveguide stack fixed to a lens frame is shown, wherein the adhesive between the waveguide stack and the lens frame is offset by a distance OFF from the edge of the waveguide stack;

[0017] Figure 4I It shows in Figure 4C The stress at the edge of the waveguide stack is shown in the figure;

[0018] Figure 4J It shows Figure 4E The stress at the edge of the waveguide stack shows that it is related to Figure 4C Compared to the example of reduced stress;

[0019] Figure 5 It shows the detection of eye gaze direction;

[0020] Figure 6 The location of the eye was detected;

[0021] Figure 7 Examples of visible light captured by the left visible light camera as the left original image and captured by the right visible light camera as the right original image are depicted.

[0022] Figure 8 Production was shown Figure 4E Waveguide stacking method;

[0023] Figure 9 A block diagram showing the electronic components of an eyeglasses device, a mobile device, and a server system connected via multiple networks is provided; and

[0024] Figure 10 An exemplary wearable device (e.g., a goggle device) with visual user input is shown. Detailed Implementation

[0025] A goggle comprising a multilayer display having an adhesive that bonds the layers together at an inward offset distance from the outer edges of the layers. The display has an image display layer, such as an optical waveguide in one example, and a pair of layers surrounding the image display layer, which may include an optically transparent substrate (such as glass). The corresponding adhesive is positioned between the image display layer and each of the paired layers at an inward offset distance from the outer edge of the image display layer to reduce stress in the display. Each of the adhesives may be a continuous bead, such that there is no adhesive between the paired layers and the image display layer at the outer edges. Due to the offset distance of the adhesive, there is no bending moment at the simply supported location (free end), and therefore no bending stress, thus making the waveguide edge stress-free during bending. In one example, the offset distance may be at least twice the thickness of the image display layer to reduce stress in the image display layer.

[0026] Further objects, advantages, and novel features of the example will be set forth in part in the description which follows, and will be partially understood by one of ordinary skill in the art upon examination of the following and the accompanying drawings, or may be learned by production or operation of the example. The objects and advantages of this subject matter may be realized and obtained by means and combinations of methods, means, and arrangements particularly pointed out in the appended claims.

[0027] In the following detailed description, numerous specific details are illustrated by way of example to provide a thorough understanding of the teachings. However, it will be clear to those skilled in the art that these teachings can be practiced without such details. In other examples, well-known methods, processes, components, and circuits have been described in a relatively high-level manner without detail to avoid unnecessarily obscuring several aspects of these teachings.

[0028] As used herein, the term "coupled" means any logical, optical, physical, or electrical connection, link, etc., through which a signal or light generated or supplied 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 can be separated by intermediate components, elements, or communication media that can modify, manipulate, or transport light or signals.

[0029] The orientations of goggle devices, associated components, and any complete device incorporating an eye scanner and camera, as shown in any of the accompanying figures, are given by way of example only for illustrative and discussion purposes. In operation for a particular variable optical processing application, the goggle device may be oriented in any other direction suitable for that particular application, such as up, down, side, or any other orientation. Furthermore, within the scope used herein, any directional terms (such as front, back, inward, outward, facing, left, right, lateral, longitudinal, up, down, upper, lower, top, bottom, and side) are used by way of example only and do not limit the direction or orientation of any optical component or optical component constructed as otherwise described herein.

[0030] Now refer in detail to the examples shown in the accompanying drawings and discussed below.

[0031] Figure 1A This is a side view of an exemplary hardware configuration of the goggle device 100, which includes an image display 180D. Figure 2A The right optical component 180B of the goggle device 100 includes multiple visible light cameras 114A-114B forming a stereo camera. Figure 7 The right visible light camera 114B is located on the right temple 110B.

[0032] The left visible light camera 114A and the right visible light camera 114B have image sensors sensitive to wavelengths within the visible light range. Each of the visible light cameras 114A-114B has a different forward-facing coverage angle; for example, visible light camera 114B has the depicted coverage angle 111B. The coverage angle is the angular range within which the image sensors of the visible light cameras 114A-114B pick up electromagnetic radiation and generate images. 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 300,000 pixels), 720p, or 1080p. Image sensor data from the visible light cameras 114A-114B, along with geographic location data, is captured, digitized by an image processor, and stored in memory.

[0033] To provide stereoscopic vision, the visible light cameras 114A-114B can be coupled to an image processor. Figure 9 The image processor 912 includes an element 912 for digitizing the image along with a timestamp of the captured scene. The image processor 912 includes elements for receiving signals from the visible light cameras 114A-114B and processing those signals from the visible light cameras 114A-114B into a format suitable for storage in a memory. Figure 9The circuitry is in the format of element 934. The timestamp can be added by image processor 912 or another processor controlling the operation of visible light cameras 114A-114B. Visible light cameras 114A-114B allow stereo cameras to simulate human binocular vision. The stereo camera provides images based on two captured images (with overlapping fields of view 713) from visible light cameras 114A-114B, each with the same timestamp. Figure 7 The components 758A-758B are used to reproduce three-dimensional images. Figure 7 The ability of element 715. This three-dimensional image 715 allows for immersive, lifelike experiences, such as for use in virtual reality games or video games. For stereoscopic vision, a pair of images 758A-758B are generated at a given moment—one image for each of the left visible light camera 114A and the right visible light camera 114B. Depth perception is provided via optical components 180A-180B when (e.g., by image processor 912) a pair of generated images 758A-758B from coverage angles 111A-111B of the forward-facing left visible light camera 114A and right visible light camera 114B are stitched together.

[0034] In the example, the user interface field-of-view adjustment system includes a goggle device 100. The goggle device 100 includes a frame 105, a right temple 110B extending from the right outer portion 170B of the frame 105, and a perspective image display 180D including optical components 180B to present a graphical user interface to the user. Figures 2A-2B The goggle device 100 includes a left visible light camera 114A attached to the frame 105 or the left temple 110A to capture a first image of the scene. The goggle device 100 further includes a right visible light camera 114B, attached to the frame 105 or the right temple 110B to (e.g., simultaneously with the left visible light camera 114A) capture a second image of the scene that partially overlaps with the first image. Although in Figure 1A-Figure 1B Not shown, but the user interface field of view adjustment system further includes a processor 932, which is coupled to the goggle device 100 and connected to the visible light cameras 114A-114B; a memory 934, which the processor 932 can access; and a program in the memory 934, such as a program in the goggle device 100 itself or in another part of the user interface field of view adjustment system.

[0035] Although Figure 1A Not shown in the image, the goggle device 100 also includes a head movement tracker (…). Figure 1B Component 109) or eye movement tracker ( Figure 2BComponent 213). The goggle device 100 further includes optical components 180A-180B, a perspective image display 180C-180D for presenting a sequence of displayed images, and an image display driver ( Figure 9 The image display driver (942) is coupled to the perspective image display 180C-180D of the optical components 180A-180B to control the image display 180C-180D of the optical components 180A-180B to present a sequence of displayed images 715, which is described in further detail below. The goggle device 100 further includes a memory 934 and a processor 932 that can access the image display driver 942 and the memory 934. The goggle device 100 further includes a memory (… Figure 9 The program in component 934. Execution of the program by processor 932 configures the goggle device 100 to perform functions, including the function of presenting an initial display image, a sequence of display images via perspective image displays 180C-180D, the initial display image having an initial field of view corresponding to an initial head orientation or an initial eye gaze direction. Figure 5 Component 230).

[0036] The processor 932's execution of the program further configures the goggle device 100 to detect the user's movement of the goggle device via: (i) via a head movement tracker ( Figure 1B (i) Component 109) tracks the user's head movement, or (ii) via an eye movement tracker. Figure 2B , Figure 5 The element 213) tracks the eye movements of the user's eyes in the goggle device 100. The processor 932, in executing the program, further configures the goggle device 100 to determine an initial field-of-view adjustment for the initial displayed image based on the detected user movement. The field-of-view adjustment includes a continuous field of view corresponding to consecutive head directions or consecutive eye directions. The processor 932, in executing the program, further configures the goggle device 100 to generate a sequence of continuous displayed images based on the field-of-view adjustment. The processor 932, in executing the program, further configures the goggle device 100 to present the continuous displayed images via the perspective image displays 180C-180D of the optical components 180A-180B.

[0037] Figure 1B yes Figure 1AThe top cross-sectional view of the temple of the goggle assembly 100 depicts the right visible light camera 114B, head movement tracker 109, and circuit board. The left visible light camera 114A is constructed and positioned substantially similarly to the right visible light camera 114B, except that it is connected and coupled to the left outer side 170A. As shown, the goggle assembly 100 includes the right visible light camera 114B and a circuit board, which may be a flexible printed circuit board (PCB) 140. The right hinge 126B connects the right temple 110B to the right temple 125B of the goggle assembly 100. In some examples, the right visible light camera 114B, the flexible PCB 140, or other components with electrical connectors or contacts may be located on the right temple 125B or the right hinge 126B.

[0038] As shown in the figure, the goggle device 100 includes a head movement tracker 109, which comprises, for example, an inertial measurement unit (IMU). An inertial measurement unit is an electronic device that uses a combination of accelerometers and gyroscopes (and sometimes magnetometers) to measure and report specific forces, angular velocities, and sometimes magnetic fields around the body. An inertial measurement unit operates by detecting linear acceleration using one or more accelerometers and detecting rotational rates using one or more gyroscopes. A typical configuration of an inertial measurement unit includes one accelerometer, one gyroscope, and one magnetometer for each of three axes: a horizontal axis (X) for left-right movement, a vertical axis (Y) for top-bottom movement, and a depth or distance axis (Z) for up-down movement. The accelerometer detects the gravity vector. The magnetometer defines rotation in a magnetic field (e.g., facing south, north, etc.) like a compass that generates a direction reference. These three accelerometers are used to detect acceleration along the horizontal axis, vertical axis, and depth axis defined above, which can be defined relative to the ground, the goggle device 100, or the user wearing the goggle device 100.

[0039] The goggle device 100 detects user movement by tracking head movement of the user's head via a head movement tracker 109. Head movement includes changes in head orientation from an initial head orientation on a horizontal axis, vertical axis, or a combination thereof during the presentation of an initial display image on an image display. In one example, tracking user head movement via the head movement tracker 109 includes measuring the initial head orientation on a horizontal axis (e.g., the X-axis), a vertical axis (e.g., the Y-axis), or a combination thereof (e.g., lateral or diagonal movement) via the inertial measurement unit 109. Tracking user head movement via the head movement tracker 109 further includes measuring the continuous head orientation on a horizontal axis, vertical axis, or a combination thereof via the inertial measurement unit 109 during the presentation of the initial display image.

[0040] Tracking head movement of the user's head via head movement tracker 109 further includes determining changes in head orientation based on both an initial head orientation and a continuous head orientation. Detecting movement of the user of the goggle device 100 further includes determining, in response to head movement tracked via head movement tracker 109, a change in head orientation exceeding a deviation angle threshold on the horizontal axis, vertical axis, or a combination thereof. The deviation angle threshold is between approximately 3° and 10°. As used herein, when referring to an angle, the term "approximately" means a deviation of ±10%.

[0041] Changes along the horizontal axis slide 3D objects (such as characters, Bitmojis, application icons, etc.) into and out of the field of view by, for example, adjusting the visibility of the 3D object by hiding, showing, or otherwise. In one example, for instance, changes along the vertical axis display weather information, time of day, date, calendar appointments, etc., when the user looks up. In another example, the goggle device 100 can be turned off when the user looks down along the vertical axis.

[0042] The right temple 110B includes a temple body 211 and a temple cap, wherein, Figure 1B The temple cover is omitted in the cross-sectional view. Multiple interconnecting circuit boards (such as PCBs or flexible PCBs) are disposed inside the right temple 110B. These interconnecting circuit boards include controller circuitry for the right visible light camera 114B, microphone 130, and speaker 132, as well as low-power wireless circuitry (e.g., for use via Bluetooth). TM (e.g., wireless short-range network communication) and high-speed wireless circuits (e.g., for wireless local area network communication via WiFi).

[0043] The right visible light camera 114B is coupled to or disposed on the flexible PCB 240 and covered by a visible light camera cover lens, which aims through an opening formed in the right temple 110B. In some examples, the frame 105 connected to the right temple 110B includes an opening for the visible light camera cover lens. The frame 105 includes a front side configured to face outwards away from the user's eye. The opening for the visible light camera cover lens is formed on and extends through the front side. In this example, the right visible light camera 114B has an outward-facing coverage angle 111B that is collinear with the line of sight or viewing angle of the user's right eye in the goggle device 100. The visible light camera cover lens may also be adhered to the outward-facing surface of the right temple 110B, wherein the opening forms an outward-facing coverage angle, but in a different outward direction. This coupling may also be indirect via an intervening component.

[0044] A left (first) visible light camera 114A is connected to a left perspective image display 180C of a left optical assembly 180A to generate a first background scene for a first sequential display image. A right (second) visible light camera 114B is connected to a right perspective image display 180D of a right optical assembly 180B to generate a second background scene for a second sequential display image. The first and second background scenes partially overlap to present a three-dimensional observable area of ​​the sequential display image.

[0045] The flexible PCB 140 is disposed inside the right temple 110B and coupled to one or more other components housed in the right temple 110B. Although shown as a circuit board formed on the right temple 110B, the right visible light camera 114B may be formed on a circuit board on the left temple 110A, temples 125A-125B, or frame 105.

[0046] Figure 2A This is a rear view of an exemplary hardware configuration of a goggle device 100, which includes an eye scanner 113 on a frame 105 for use in the system to determine the eye position and gaze direction of the wearer / user of the goggle device 100. Figure 2A As shown, the goggle device 100 is configured for wear by a user. Figure 2A The example shown is eyeglasses. The goggle device 100 can take other forms, such as a hat, headphones, or helmet, and can be combined with other types of frames.

[0047] In the example of eyeglasses, the goggle device 100 includes a frame 105, which includes a left frame 107A connected to the right frame 107B via a nose bridge 106 adapted to fit the user's nose. The left frame 107A and the right frame 107B include corresponding apertures 175A-175B for holding respective optical elements 180A-180B (such as clear lenses) and... Figure 4B The perspective displays 180C-180D shown are inserted between the corresponding apertures 175A-175B. As used herein, the term lens refers to a transparent or translucent sheet covered with glass or plastic having curved and flat surfaces that cause light to converge / diverge, or cause little or no convergence / divergence.

[0048] Although shown as having two optical elements 180A-180B, the goggle device 100 may include other arrangements, such as a single optical element, depending on the application or intended user. As further shown, the goggle device 100 includes a left temple 110A adjacent to the left outer portion 170A of the frame 105 and a right temple 110B adjacent to the right outer portion 170B of the frame 105. The temples 110A-110B may be integrated into the frame 105 on the respective sides 170A-170B (as shown) or implemented as separate components of the frame 105 attached to the respective sides 170A-170B. Alternatively, the temples 110A-110B may be integrated into temples (not shown) attached to the frame 105.

[0049] exist Figure 2A In the example, the eye scanner 113 includes an infrared emitter 115 and an infrared camera 120. Visible light cameras typically include a blue light filter to block infrared light detection; in this example, the infrared camera 120 is a visible light camera, such as a low-resolution video graphics array (VGA) camera (e.g., 640 × 480 pixels, totaling 300,000 pixels), where the blue filter has been removed. The infrared emitter 115 and the infrared camera 120 are co-located on the frame 105, for example, both are shown connected to the upper portion of the left bezel 107A. The frame 105 or one or more of the left temple 110A and right temple 110B include a circuit board (not shown) that includes the infrared emitter 115 and the infrared camera 120. The infrared emitter 115 and the infrared camera 120 can be connected to the circuit board, for example, by soldering.

[0050] Other arrangements of the infrared emitter 115 and the infrared camera 120 can be implemented, including arrangements in which both the infrared emitter 115 and the infrared camera 120 are located on the right frame 107B or in different positions on the frame 105, for example, the infrared emitter 115 is on the left frame 107A and the infrared camera 120 is on the right frame 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-110B, or vice versa. The infrared emitter 115 can be substantially attached to any position on the frame 105, the left temple 110A, or the right temple 110B to emit a pattern of infrared light. Similarly, the infrared camera 120 can be substantially attached to any position on the frame 105, the left temple 110A, or the right temple 110B to capture at least one reflection variation in the emitted pattern of infrared light.

[0051] Infrared emitter 115 and infrared camera 120 are arranged to face part or all of the eye's field of view toward the user's eye in order to identify the corresponding eye position and gaze direction. For example, infrared emitter 115 and infrared camera 120 are positioned directly in front of the eye, in the upper part of the frame 105, or in the temples 110A-110B at any end of the frame 105.

[0052] Figure 2B This is a rear view of an exemplary hardware configuration of another goggle device 200. In this example configuration, the goggle device 200 is depicted as including an eye scanner 213 on the right temple 210B. As shown, an infrared emitter 215 and an infrared camera 220 are co-located on the right temple 210B. It should be understood that the eye scanner 213, or one or more components thereof, may be located on the left temple 210A and other locations on the goggle device 200 (e.g., frame 105). The infrared emitter 215 and the infrared camera 220 are... Figure 2A The infrared emitter is similar to an infrared camera, but the eye scanner 213 can be varied to be sensitive to different light wavelengths, as previously seen in... Figure 2A As described in [the text].

[0053] Similar to Figure 2A The goggle device 200 includes: a frame 105, which includes a left frame 107A connected to the right frame 107B via a nose bridge 106; and the left frame 107A and the right frame 107B include corresponding openings for holding corresponding optical elements 180A-180B including perspective displays 180C-180D.

[0054] Figures 2C-2D This is a rear view of an exemplary hardware configuration of a goggle device 200, which includes two different types of perspective image displays 180C-180D. In one example, these perspective image displays 180C-180D of the optical components 180A-180B include integrated image displays. Figure 2CAs shown, optical components 180A-180B include any suitable type of suitable 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. Optical components 180A-180B also include one or more optical layers 176, which may include lenses, optical coatings, prisms, mirrors, waveguides, light strips, and other optical components in any combination. Optical layers 176A-N may include prisms having suitable dimensions and configurations and including a first surface for receiving light from the display matrix and a second surface for emitting light toward the user's eye. The prisms of optical layers 176A-N extend over all or at least a portion of the corresponding apertures 175A-175B formed in the left bezel 107A and right bezel 107B to allow the user to see the second surface of the prism when the user's eye is viewing through the corresponding left bezel 107A and right bezel 107B. The first surface of the prism of optical layers 176A-N faces upward from the frame 105 and the display matrix covers the prism, such that photons emitted by the display matrix strike the first surface. The size and shape of the prism are determined such that light is refracted within the prism and directed to the user's eye by the second surface of the prism of optical layers 176A-N. In this respect, the second surface of the prism of optical layers 176A-N may be convex to direct light toward the center of the eye. The size and shape of the prism may optionally be determined to magnify the image projected by the perspective image displays 180C-180D, and the light travels through the prism such that the image observed from the second surface is larger than the image emitted from the perspective image displays 180C-180D in one or more dimensions.

[0055] In another example, the perspective image display 180C-180D of the optical components 180A-180B includes, for example: Figure 2D The projected image display shown. Optical components 180A-180B include a laser projector 150, which is a three-color laser projector using a scanning mirror or galvanometer. During operation, a light source (such as the laser projector 150) is positioned in or above one of the temples 125A-125B of the goggle assembly 100. Optical components 180A-180B include one or more light bands 155A-N spaced apart across the width of the lens of optical components 180A-180B or across the depth between the front and rear surfaces of the lens.

[0056] When photons projected by the laser projector 150 travel through the lenses of the optical components 180A-180B, they encounter light bands 155A-N. When a particular photon encounters a particular light band, the photon is either redirected toward the user's eye or it is passed to the next light band. The combination of modulation of the laser projector 150 and modulation of the light bands can control specific photons or beams. In the example, the processor controls the light bands 155A-N by initiating mechanical, acoustic, or electromagnetic signals. Although shown as having two optical components 180A-180B, the goggle device 100 may include other arrangements, such as single or three optical components, or the optical components 180A-180B may have been arranged in different configurations depending on the application of the goggle device 100 or the intended user.

[0057] like Figures 2C to 2D As further shown, the goggle assembly 100 includes a left temple 110A adjacent to the left outer portion 170A of the frame 105 and a right temple 110B adjacent to the right outer portion 170B of the frame 105. The temples 110A-110B may be integrated into the frame 105 on the respective outer portions 170A-170B (as shown) or implemented as separate components attached to the frame 105 on the respective outer portions 170A-170B. Alternatively, the temples 110A-110B may be integrated into temples 125A-125B attached to the frame 105.

[0058] In one example, the perspective image display includes a first perspective image display 180C and a second perspective image display 180D. The goggle device 100 includes a first aperture 175A and a second aperture 175B, which hold corresponding first optical components 180A and 180B. The first optical component 180A includes the first perspective image display 180C (e.g., Figure 2C The display matrix or light strip 155A-N' and projector 150A). The second optical component 180B includes a second perspective image display 180D, for example, Figure 2C The display matrix or light strip 155A-N” and the projector 150B). The continuous field of view of the continuously displayed image includes a viewing angle of approximately 15° to 30° measured horizontally, vertically, or diagonally, and more specifically 24°. The continuously displayed image with a continuous field of view represents a combined three-dimensional observable area that is visible by stitching together two display images presented on a first image display and a second image display.

[0059] As used herein, “view of view” describes the angular range of the field of view associated with the displayed images presented on each of the left image display 180C and right image display 180D of the optical components 180A-180B. “Coverage angle” describes the angular range of images that the lenses of the visible light cameras 114A-114B or the infrared camera 220 can image. Typically, the image circle produced by the lens is large enough to completely cover the film or sensor, possibly including some vignetting (i.e., the brightness or saturation of the image decreases towards the periphery compared to the center of the image). If the coverage angle of the lens does not fill the sensor, the image circle will be visible, typically with strong vignetting towards the edges, and the effective view of view will be limited to the coverage angle. “Field of view” is intended to describe the area of ​​the observable region that the user of the goggle device 100 can see through his or her eyes via the displayed images presented on the left image display 180C and right image display 180D of the optical components 180A-180B. The image display 180C of the optical components 180A-180B can have a field of view with a coverage angle between 15° and 30° (e.g., 24°) and a resolution of 480×480 pixels.

[0060] Figure 3 It shows Figure 2A Rear perspective view of the goggle assembly. The goggle assembly 100 includes an infrared emitter 215, an infrared camera 220, a front part of the frame 330, a back part of the frame 335, and a circuit board 340. Figure 3 As can be seen, the upper part of the left frame of the goggle device 100 includes a front part 330 and a back part 335. An opening for the infrared emitter 215 is formed on the back part 335.

[0061] As shown in section 4, which surrounds the upper middle portion of the left frame, a circuit board (a flexible PCB 340) is sandwiched between the front 330 and the back 335 of the frame. The left temple 110A is also shown in more detail attached to the left temple 325A via a left hinge 126A. In some examples, components of the eye movement tracker 213 (including an infrared emitter 215, the flexible PCB 340, or other electrical connectors or contacts) may be located on the left temple 325A or the left hinge 126A.

[0062] Figure 4A Is passing through and Figure 3 The cross-sectional view of the goggle assembly, corresponding to the infrared emitter 215 and the frame. Figure 4AThe cross-section shows multiple layers of the goggle assembly 100, as shown in the figure. The frame includes a front portion 330 and a back portion 335. A flexible PCB 340 is disposed on the front portion 330 and connected to the back portion 335. An infrared emitter 215 is disposed on the flexible PCB 340 and covered by an infrared emitter-covered lens 445. For example, the infrared emitter 215 is reflow soldered to the back portion of the flexible PCB 340. By subjecting the flexible PCB 340 to controlled heat from molten solder paste to connect the two components, reflow soldering attaches the infrared emitter 215 to contact pads formed on the back portion of the flexible PCB 340. In one example, reflow soldering is used to surface mount the infrared emitter 215 onto the flexible PCB 340 and electrically connect the two components. However, it should be understood that, for example, vias can be used to connect leads from the infrared emitter 215 to the flexible PCB 340 via interconnects.

[0063] The frame back 335 includes an infrared emitter opening 450 for an infrared emitter cover lens 445. The infrared emitter opening 450 is formed on the rearward-facing side of the frame back 335, which is configured to face inwards toward the user's eye. In this example, a flexible PCB 340 can be attached to the frame front 330 via a flexible PCB adhesive 460. The infrared emitter cover lens 445 can be attached to the frame back 335 via an infrared emitter cover lens adhesive 455. This coupling can also be indirect via an intervening component.

[0064] In one example, the displays 180C and 180D, which include waveguides, are critical components of the goggles 100 and are mechanically relatively weak. An exemplary material used for the waveguides is glass. The cutting process reduces (approximately 70%) the strength along the edge of the waveguide.

[0065] like Figure 4B and Figure 4C As shown, the waveguides of displays 180C and 180D can be formed as waveguide stacks 465 with multiple layers. Figure 4B It is along Figure 2A The top view section taken from line 4 in the diagram, and Figure 4C It shows Figure 4BAn enlarged view of the waveguide stack 465. One method of bonding the layers in the waveguide stack 465 involves using a wide adhesive 466 at the edges of the layers of the waveguide stack 465, which generates stress at the edges of the waveguide stack during bending of the frame 105 and during free fall (e.g., upon impact with the ground). The waveguide stack 465 may include two unchemically strengthened glass substrates 468 and 470, as commonly seen in the glass covers of mobile phones / tablets. Furthermore, the cutting process significantly reduces the strength of the waveguide edges compared to the strength of the substrate material, typically by about one-third. This results in relatively poor drop test performance, where the glass substrate waveguide eventually breaks at a very low drop height, making it difficult to meet product reliability requirements.

[0066] The waveguide stack 465 may have three layers forming the waveguide stack, including glass substrates 468 and 470, which surround and sandwich an image display layer comprising a waveguide 472 inserted between the glass substrates 468 and 470. These layers are bonded at their edges using an adhesive 466 that is 2 mm wide and 0.05 mm to 0.15 mm thick. The waveguide stack 465 is then bonded to the frame 105 at its edges using an adhesive that is 2 mm wide and 0.25 mm thick. The wide adhesive, and the fact that it terminates at the edges of the waveguide stack 465, makes the waveguide stack 465 a fixed boundary structure in structural analysis, where the stress in the waveguide stack 465 is typically high, such as... Figure 4D As shown at position 476 in the text.

[0067] Reference Figure 4E , Figure 4F and Figure 4G This disclosure provides a bonded waveguide stack 480 and a method for avoiding or minimizing stress at the waveguide edges. Figure 4C Compared to the adhesive in the example, the width W of adhesive 482 is reduced, the thickness T of adhesive 482 is increased, and the position of adhesive 482 is offset inward from the waveguide edge 484 by a distance OFF, which ends well within the waveguide edge 484, making the waveguide stack 480 a simple support structure in structural analysis, such as... Figure 4D As shown in 478. Due to the offset distance OFF of adhesive 482, there is no bending moment at the simple support position (free end), and therefore no bending stress, thus making the waveguide edge stress-free during bending.

[0068] As shown in the figure, in this example, the waveguide display assembly 180D, including a waveguide stack 480, includes: an image display layer including a waveguide 190; and glass substrates 192 and 194, which are adhesively fixed to and sandwiched between the waveguide 190. Each of the optically transparent glass substrates 192 and 194 is spaced from the waveguide 190 by a corresponding adhesive 482 to create air gaps 196 and 198 between the waveguide 190 and each of the glass substrates 192 and 194 to achieve the necessary optical stacking, and for reliability purposes, an optical nanostructured grating may be included on the waveguide 190.

[0069] like Figure 4F As shown, the adhesive offset distance OFF is at least twice the thickness of waveguide 190 to reduce or minimize stress at the edges of waveguide stack 480, thereby forming a... Figure 4D The simple support structure shown at point 478. (See example...) Figure 4G As shown, adhesive 482 has a width W offset inward by a distance OFF from the edge of waveguide stack 480. In the example, with a waveguide 190 thickness of 3 mm, the adhesive width W can be 1 mm, the adhesive thickness can be 0.5 mm, and the adhesive offset OFF can be 6 mm.

[0070] Figure 4H A waveguide stack 480 is shown attached to a frame 105, wherein an adhesive 482 between the waveguide stack 480 and the frame 105 is offset by a distance OFF from the edge of the waveguide stack 480.

[0071] Figure 4I The stress at the edge of waveguide stack 465 is shown, which indicates Figure 4C The example shows a maximum stress of 132 MPa.

[0072] Figure 4J The stress at the edge of waveguide stack 480 is shown, exhibiting a reduced stress of 73 MPa, compared to... Figure 4C Compared to the example, this reduces stress by approximately 45%.

[0073] In the example, processor 932 uses eye tracker 213 to determine, for example, Figure 5 The wearer's eye gaze direction 230 shown in the diagram 234, and as shown in the diagram... Figure 6The wearer's eye position 236 is shown within the eye movement range of the device. The eye tracker 213 is a scanner that uses infrared illumination (e.g., near-infrared, short-wavelength infrared, mid-wavelength infrared, long-wavelength infrared, or far-infrared) to capture images of changes in the reflection of infrared light from the eye 234 to determine the gaze direction 230 of the pupil 232 of the eye 234 relative to the perspective display 180D and the eye position 236.

[0074] Figure 7 An example of capturing visible light with a camera is depicted. Visible light is captured by a left visible light camera 114A with a left visible light camera field of view 111A, as the left raw image 758A. Visible light is captured by a right visible light camera 114B with a right visible light camera field of view 111B, as the right raw image 758B. Based on the processing of the left raw image 758A and the right raw image 758B, the processor 932 generates a three-dimensional depth map 715 of the three-dimensional scene, hereinafter referred to as an image.

[0075] Figure 8 This is a flowchart 800 showing a method for producing waveguide stack 480 and attaching waveguide stack 480 to the frame 105 of goggles 100.

[0076] At frame 802, a first continuous bead of adhesive 482 is applied to waveguide 190 at an offset distance OFF from the edge of waveguide 190, such as by a dispensing machine. Adhesive 482 has as about Figure 4G The width W and thickness T are described and shown.

[0077] At frame 804, the glass substrate 192 is attached to the waveguide 190 using a placement tool, ensuring a secure attachment between the glass substrate 192 and the waveguide 190. The glass substrate 192 is separated from the waveguide 190 by an air gap 196. Figure 4F As shown. The air gap 196 enables the necessary optical stacking and encapsulates an optical nanostructure grating that can be included on the waveguide 190 for reliability purposes.

[0078] At frame 806, using a dispensing machine, at an offset distance OFF from the edge of waveguide 190, a second continuous bead of adhesive 482 is applied to the waveguide 190 on the opposite side of the first continuous bead of adhesive 482. Adhesive 482 also has a width W and a thickness T, as described above. Figure 4G As described and shown, and such that the first and second consecutive beads of adhesive 482 are vertically aligned with each other.

[0079] At frame 808, the glass substrate 194 is attached to the waveguide 190 via a placement machine, such that the glass substrate 194 is attached to the waveguide 190, and the glass substrate 194 is separated from the waveguide 190 by an air gap 198. Figure 4FAs shown. Air gap 198 enables the necessary optical stacking and encapsulates an optical nanostructure grating that can be included on waveguide 190 for reliability purposes. This completes the assembly of waveguide stack 480.

[0080] At frame 810, waveguide stack 480 is attached to frame 105 via beads of adhesive 482. (As shown) Figure 4F As shown, the glass substrate 194 is positioned adjacent to the inner edge of the lens frame 105.

[0081] Figure 9 A high-level functional block diagram is depicted including exemplary electronic components disposed in goggles 100 and 100. These exemplary electronic components include a processor 932, a memory 934, and perspective image displays 180C and 180D.

[0082] The memory 934 includes instructions for execution by the processor 932 to implement the functions of the goggles 100 / 100, 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, thereby performing the functions of the goggles 100 / 100 and communicating with external devices via a wireless connection.

[0083] The user interface adjustment system 900 includes a wearable device having an eye movement tracker 213 (e.g., in...). Figure 2B The goggle device 100 is shown as having an infrared transmitter 215 and an infrared camera 220. The user interface adjustment system 900 also includes a mobile device 990 and a server system 998 connected via various networks. The mobile device 990 can be a smartphone, tablet computer, laptop computer, access point, or any other such device capable of connecting to the goggle device 100 using both low-power wireless connection 925 and high-speed wireless connection 937. The mobile device 990 is connected to the server system 998 and a network 995. The network 995 can include any combination of wired and wireless connections.

[0084] The goggle device 100 includes at least two visible light cameras 114A-114B (one associated with the left outer portion 170A and one associated with the right outer portion 170B). The goggle device 100 further includes two perspective image displays 180C-180D (one associated with the left outer portion 170A and one associated with the right outer portion 170B) of the optical components 180A-180B. The goggle device 100 also includes an image display driver 942, an image processor 912, low-power circuitry 920, and high-speed circuitry 930. Figure 9The components shown for the goggle device 100 are located on one or more circuit boards (e.g., PCBs or flexible PCBs) in the temples. Alternatively or additionally, the depicted components may be located in the temples, frames, hinges, or nose bridge of the goggle device 100. The left visible light camera 114A and the right visible light camera 114B may include digital camera elements, such as complementary metal-oxide-semiconductor (CMOS) image sensors, charge-coupled devices, lenses, or any other corresponding visible or light-capturing elements that can be used to capture data, including images of scenes with unknown objects.

[0085] Eye movement tracking program 945 implements user interface field-of-view adjustment instructions, including causing goggle device 100 to track eye movements of the user's eyes via eye movement tracker 213. Other implemented instructions (functions) cause goggle device 100 to determine an initial field-of-view adjustment of the initial displayed image based on detected eye movements of the user corresponding to continuous eye directions. Further implemented instructions 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 via the user interface. The visible output appears on perspective image displays 180C-180D of optical components 180A-180B, which are driven by image display driver 934 to present a sequence of displayed images, including an initial displayed image with an initial field of view and continuously displayed images with continuous fields of view.

[0086] like Figure 9As shown, the high-speed circuit 930 includes a high-speed processor 932, a memory 934, and a high-speed wireless circuit 936. In the example, an image display driver 942 is coupled to the high-speed circuit 930 and operated by the high-speed processor 932 to drive the left image display 180C and the right image display 180D of the optical components 180A-180B. The high-speed processor 932 can be any processor capable of managing the high-speed communication and operation of any general-purpose computing system required by the goggle device 100. The high-speed processor 932 includes the processing resources required to manage high-speed data transmission over a high-speed wireless connection 937 to a wireless local area network (WLAN) using the high-speed wireless circuit 936. In some examples, the high-speed processor 932 executes an operating system, such as the LINUX operating system or other such operating system of the goggle device 100, and the operating system is stored in the memory 934 for execution. Among other duties, the high-speed processor 932, which executes the software architecture of the goggle device 100, is used to manage data transmission using the high-speed wireless circuit 936. In some examples, the high-speed wireless circuit 936 is configured to implement the Institute of Electrical and Electronics Engineers (IEEE) 802.11 communication standard, also known herein as Wi-Fi. In other examples, other high-speed communication standards may be implemented by the high-speed wireless circuit 936.

[0087] The low-power wireless circuit 924 and high-speed wireless circuit 936 of the goggle device 100 may include a short-range transceiver (Bluetooth). TM The mobile device 990 (including transceivers communicating via low-power wireless connection 925 and high-speed wireless connection 937) can be implemented using the architectural details of the goggle device 100, as can other components of the network 995.

[0088] Memory 934 includes any storage device capable of storing a variety of data and applications, among other things, including color maps, camera data generated by the left visible light camera 114A and the right visible light camera 114B and the image processor 912, and images generated by the image display driver 942 and displayed on the perspective image displays 180C-180D of the optical components 180A-180B. While memory 934 is shown as integrated with high-speed circuitry 930, in other examples, memory 934 may be a separate, independently operating element of the 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 memory 934 via a chip including the high-speed processor 932. In other examples, the high-speed processor 932 may manage addressing of memory 934 such that the low-power processor 922 will bootstrap the high-speed processor 932 whenever a read or write operation involving memory 934 is required.

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

[0090] The output components of the goggle device 100 include visual components, such as in Figures 2C-2D The optical components 180A-180B described herein include a left image display 180C and a right image display 180D (e.g., a display, such as a liquid crystal display (LCD), a plasma display panel (PDP), a light-emitting diode (LED) display, a projector, or a waveguide). The image displays 180C-180D of the optical components 180A-180B are driven by an image display driver 942. The output components of the goggle device 100 further include acoustic components (e.g., a speaker), haptic components (e.g., a vibration motor), other signal generators, etc. The input components of the goggle device 100, the mobile device 990, and the server system 998 may include alphanumeric input components (e.g., a keyboard, a touchscreen configured to receive alphanumeric input, an optical keyboard, or other alphanumeric input components), point-based input components (e.g., a mouse, a touchpad, a trackball, a joystick, a motion sensor, or other point devices), haptic input components (e.g., physical buttons, a touchscreen that provides the position and force of a touch or touch gesture, or other haptic input components), and audio input components (e.g., a microphone), etc.

[0091] The 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 goggle device 100. For example, peripheral device element 919 may include any I / O component, including output components, movement components, position components, or any other such components described herein. The goggle device 100 may take other forms and may be combined with other types of frames, such as hoods, headsets, or helmets.

[0092] For example, the biometric components of the user interface field of view adjustment 900 include components for detecting expressions (e.g., hand gestures, facial expressions, voice gestures, body posture, or eye tracking), measuring biosignals (e.g., blood pressure, heart rate, body temperature, sweating, or brain waves), and identifying people (e.g., voice identifiers, retinal identifiers, facial identifiers, fingerprint identifiers, or EEG-based identifiers). Motion components include accelerometer components (e.g., accelerometers), gravity sensor components, rotation sensor components (e.g., gyroscopes), etc. Position components include position sensor components (e.g., GPS receiver components) for generating position coordinates, and WiFi or Bluetooth for generating positioning system coordinates. TM Transceiver, altitude sensor assembly (e.g., an altimeter or barometer that detects air pressure from which altitude can be derived), orientation sensor component (e.g., a magnetometer), etc. Such positioning system coordinates can also be received from the mobile device 990 via wireless connections 925 and 937 through low-power wireless circuit 924 or high-speed wireless circuit 936.

[0093] In some examples, an "application" or "applications" is a program that performs functions defined within a program. One or more applications can be created using different programming languages, structured in various ways, such as object-oriented programming languages ​​(e.g., Objective-C, Java, or C++) or procedural programming languages ​​(e.g., C or assembly language). In specific examples, third-party applications (e.g., those used by entities from vendors different from those on a particular platform)... TM or iOS TM Applications developed using a Software Development Kit (SDK) can run on mobile operating systems such as iOS. TM ANDROID TM , Mobile software running on a phone (or another mobile operating system). In this example, a third-party application may invoke API calls provided by the operating system to facilitate the functionality described herein.

[0094] Reference Figure 10 The processor 932 uses the image processor 912 and the image display driver 942 to present images to the user on the image display 180. The processor 932 develops and presents visual images via the image display in response to the position of the goggle device 100 within the environment 600. In one example, the visual images include images of a hand 1002 for manipulating features of a graphical user interface (GUI) and a virtual space vehicle 1004.

[0095] The GUI can be displayed on the display 180 of the goggle device 100, the display of the mobile device 990, or the display of a remote computer (such as a server system 998). In one example, a user can manipulate selectors and actuation buttons using the user input device of the goggle device 100, the user input layer of the mobile device 990, or user input from another device.

[0096] In another example, a user can manipulate a selector and actuate a button using gestures captured by camera 114 of goggle device 100. According to this example, processor 932 of goggle device 100 is configured to capture frames of video data using cameras 114A, 114B. Objects in the images are compared to a gesture library 980 to identify predefined gestures associated with the action (e.g., pointing an index finger). When a gesture is recognized, its position is determined relative to the selector, and the button is actuated. Modifications to the gesture (e.g., a tapping movement when the fingertip of the index finger is near the button or a swiping movement when the fingertip of the index finger is near the selector) cause actuation of the button / selector.

[0097] In some implementations, the process of determining whether a detected hand shape matches a predefined gesture involves comparing pixel-level data about the hand shape from one or more frames of captured video data with data stored in a gesture library 980. Figure 9 The hand shape data is compared to a set of gestures in a gesture library 980. The detected hand shape data may include the three-dimensional coordinates of the wrist, up to fifteen interphalangeal joints, up to five fingertips, and other skeletal or soft tissue landmarks found in the captured frames. This data is compared to gesture data stored in a gesture library 980 until the best match is found. In some examples, the process includes calculating the sum of geodesic distances between the detected hand shape fingertip coordinates and a set of fingertip coordinates stored in the library 980 for each gesture. A match is indicated by a sum within a configurable threshold accuracy value.

[0098] In another exemplary implementation, the process of determining whether a detected hand shape matches a predefined gesture involves using a machine learning algorithm to compare pixel-level data about the hand shape in one or more frames of captured video data with a set of images including the gesture.

[0099] Machine learning refers to algorithms that improve incrementally through experience. By processing a large number of different input datasets, machine learning algorithms can develop improved generalizations about a particular dataset, and then use those generalizations to produce accurate outputs or schemes when processing new datasets. More broadly, machine learning algorithms involve adjusting or changing one or more parameters in response to new experiences, thereby incrementally improving the algorithm; similar to a learning process.

[0100] In the context of computer vision, mathematical models attempt to mimic tasks performed by the human visual system, aiming to use computers to extract information from images and achieve accurate understanding of their content. Computer vision algorithms have been developed for various fields, including artificial intelligence and autonomous navigation, to extract and analyze data from digital images and videos.

[0101] Deep learning refers to a class of machine learning methods based on or modeled after artificial neural networks. An artificial neural network is a computational system composed of multiple simple, highly interconnected processing elements (nodes) that process information through their dynamic state responses to external inputs. Large artificial neural networks can have hundreds or even thousands of nodes.

[0102] Convolutional Neural Networks (CNNs) are a type of neural network frequently used to analyze visual images, including digital photographs and videos. The connectivity patterns between nodes in a CNN are typically modeled after the human visual cortex is organized, comprising individual neurons arranged to respond to overlapping regions in the visual field. The neural networks suitable for the determination process described herein are based on one of the following architectures: VGG16, VGG19, ResNet50, Inception V3, Xception, or other CNN-compatible architectures.

[0103] In the machine learning example, processor 932 uses a machine-trained algorithm called a hand feature model to determine whether the detected hand shape substantially matches a predefined gesture. Processor 932 is configured to access the hand feature model trained by machine learning and apply the hand feature model to identify and locate features of hand shapes in one or more frames of video data.

[0104] In one exemplary implementation, a trained hand feature model receives frames of video data containing detected hand shapes and abstracts the images in the frames into layers for analysis. Based on the trained hand feature model, the data in each layer is compared layer by layer with gesture data stored in a gesture library 980 until a good match is identified.

[0105] In one example, a convolutional neural network (CNN) is used to perform layer-by-layer image analysis. In the first convolutional layer, the CNN identifies learned features (e.g., hand landmarks, joint coordinate sets, etc.). In the second convolutional layer, the image is transformed into multiple images, where the learned features are emphasized in each corresponding sub-image. In the merging layer, the size and resolution of the images and sub-images are reduced to isolate portions of each image containing possible features of interest (e.g., possible hand shapes, possible finger joints). Values ​​from the images from the non-output layers are compared to classify the images in the frame. As used in this paper, classification refers to the process of classifying an image based on the detected hand shape using a trained model. For example, if the detected hand shape matches a pointer gesture from library 480, the image can be classified as "pointer gesture present".

[0106] In some exemplary implementations, the processor 932 responds to detecting a pointing gesture, which is rendered as an indicator 1002 on the displays 180A-B (see reference). Figure 10 Indicator 1002 notifies the wearer that a predefined gesture has been detected. In one example, indicator 1002 is an object, such as... Figure 10 The pointing finger is shown. The indicator 1002 may include one or more visible, audible, tactile elements and other elements to notify or warn the wearer that a pointing gesture has been detected. The user can move the indicator 1002 by moving the detected gesture within the field of vision of the goggle device 100.

[0107] It will be understood that the terms and expressions used herein have a general meaning as applicable to their respective relative queries and fields of study, unless otherwise set forth herein. Relational terms such as "first" and "second" may be used merely to distinguish one entity or action from another, without necessarily requiring or implying any actual such relationship or order between these entities or actions. The terms "comprises," "comprising," "includes," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes or comprises a list of elements or steps includes not only those elements or steps but may also include other elements or steps not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element preceded by "an" or "a" does not exclude the presence of additional identical elements in the process, method, article, or apparatus that includes that element.

[0108] Unless otherwise stated, any and all measurements, values, ratings, locations, amplitudes, sizes, and other specifications set forth in this specification (including in the following claims) are approximate and imprecise. Such quantities are intended to have a reasonable range consistent with the functions they relate to and with the conventions of the field to which they belong. For example, unless expressly stated otherwise, parameter values, etc., may deviate from the quantities by up to ±10%.

[0109] Furthermore, as can be seen from the above detailed description, different features have been combined in different examples for the purpose of simplifying this disclosure. The method of this disclosure should not be construed as reflecting an intention to require more features than are expressly stated in each claim. Rather, as reflected in the following claims, the subject matter to be protected lies in fewer features than all the features of any single disclosed example. Therefore, the following claims are thus incorporated into the detailed description, wherein each claim is independently claimed as a separate subject matter.

[0110] While the foregoing has described what is considered the best model and other examples, it should be understood that different modifications may be made therein, and the subject matter disclosed herein can be implemented in different forms and examples, and can be applied to many applications, of which only some are described herein. The appended claims are intended to claim protection for any and all modifications and variations that fall within the true scope of this concept.

Claims

1. A type of protective goggles, comprising: Eyeglass frames; Temples, which are coupled to the frame; as well as A display, supported by the eyeglass frame, comprising a first layer, a second layer, and a third layer, wherein the first layer is configured to generate an image, and the second and third layers are positioned on opposite sides of the first layer, wherein both the second and third layers are attached to the first layer by respective adhesives positioned at an offset distance inward from the outer edge of the first layer. Wherein, the offset distance of the adhesive is at least twice the thickness of the first layer, and The display is attached to the frame by an adhesive that offsets the distance from the outer edge of the second layer inward.

2. The goggles according to claim 1, wherein, At the outer edge of the first layer, no adhesive is positioned between the second layer and the first layer, and between the third layer and the first layer.

3. The goggles according to claim 2, wherein, The first layer is an optical waveguide.

4. The goggles according to claim 2, wherein, Both the second layer and the third layer are substrates.

5. The goggles according to claim 4, wherein, All substrates include optically transparent glass substrates.

6. The goggles according to claim 4, further comprising an air gap between the substrate and the first layer.

7. A display configured for use with goggles having a frame and temples, the temples being coupled to the frame, the display comprising: The first layer is configured to generate an image; as well as A second and a third layer are positioned on opposite sides of the first layer, wherein both the second and the third layer are attached to the first layer by a corresponding adhesive positioned at an offset distance from the outer edge of the first layer. Wherein, the offset distance of the adhesive is at least twice the thickness of the first layer, and The display is attached to the frame by an adhesive that offsets the distance from the outer edge of the second layer inward.

8. The display according to claim 7, wherein, At the outer edge of the first layer, no adhesive is positioned between the second layer and the first layer, and between the third layer and the first layer.

9. The display according to claim 8, wherein, The first layer is an optical waveguide.

10. The display according to claim 8, wherein, Both the second layer and the third layer are substrates.

11. The display according to claim 10, wherein, All substrates include optically transparent glass substrates.

12. The display according to claim 10, further comprising an air gap between the substrate and the first layer.

13. A method of manufacturing goggles, the goggles having a frame, temples, and a display, the temples coupled to the frame, the display including a first layer, a second layer, and a third layer, the first layer being configured to generate an image, the second and third layers being positioned on opposite sides of the first layer, the method comprising: A first adhesive is disposed between the first layer and the second layer, the first adhesive being positioned at an offset distance inward from the outer edge of the first layer, wherein the offset distance of the first adhesive is at least twice the thickness of the first layer; Couple the first layer to the second layer; A second adhesive is disposed between the first layer and the third layer, the second adhesive being positioned at an offset distance inward from the outer edge of the first layer, wherein the offset distance of the second adhesive is at least twice the thickness of the first layer; Couple the first layer to the third layer; and The display is coupled to the frame of the goggles by a third adhesive offset inward from the outer edge of the second layer by a distance, wherein the offset distance of the third adhesive is at least twice the thickness of the first layer.

14. The method according to claim 13, wherein, At the outer edge of the first layer, no adhesive is positioned between the second layer and the first layer, and between the third layer and the first layer.

15. The method according to claim 14, wherein, The first layer is an optical waveguide.

16. The method according to claim 15, wherein, Both the second layer and the third layer are substrates.

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