Abstract: A recoil reduction stock. The device includes a shock absorber having a first end, a second end, and a spring channel extending therethrough. A coil spring is disposed within the spring channel. A spacer abuts the second end of the shock absorber, and the first end of the shock absorber contacts a rear edge of a firearm stock body. A lag stud is inserted through the spacer and the shock absorber, wherein a tip of the lag stud is configured to engage the firearm stock body, such that the spring is compressed between a rear edge of the firearm stock body and the spacer. A butt plate is affixed to the spacer, wherein the butt plate includes a hollow interior volume in which a head portion of the lag stud is disposed. The compressed shock absorber is adapted to resist expansion and absorb recoil energy when the firearm is fired.

Abstract: Systems and methods for coupling different types of firearm sling swivels to a variety of detachable slings are provided. In one embodiment, the sling adapter includes an adapter subassembly, a first loop channel, a second loop channel and a strap. The adapter subassembly includes a pin and an adapter body with a pin hole and a swivel hole. The pin is inserted into the pin hole of the adapter body. The swivel hole securely accommodates a detachable firearm's sling. The strap includes a first loop segment, a first pin segment, a second loop segment, a swivel segment, a third loop segment, a second pin segment and a fourth loop segment.

Abstract: A holster for a handgun includes a holster body having a chamber for receiving the handgun. An adjustable and resilient tensioner is mounted on the holster body in a position to be engaged by a handgun in the chamber, the tensioner being operable to apply a resilient biasing force to the handgun in the chamber.

Abstract: A fireworks launcher assembly can include a sleeve having a cavity defined therethrough, and a firing tube at least partially received within in the cavity of the sleeve. The firing tube can comprising a passage defined therethrough and plurality of rifling features defined about an interior surface thereof. The plurality of rifling features can cause one or more aerial shells loaded into and launched from the firing tube to rotate as the one or more aerial shells move along the firing tube during launching thereof. A wadding insert further can be received at least partially within the passage of the firing tube, and a base portion can be connected to a lower end of the firing tube to maintain the launching assembly in a generally upright orientation before, during, and/or after launching of the one or more aerial shells therefrom.

Abstract: The current system is a method for easily adjusting the front sight post on a firearm. The system is used to aid in easier front sight post adjustments as well as maintain a uniform sight picture throughout the aiming process. The system solves the current problem of viewing two separate sight pictures when looking through a rear sight. The system also solves the problem of needing a separate tool to adjust the sight post. The system includes four critical parts, a bottom sight post tower, a top sight post tower, a front sight post and a mechanism for providing constant upward force such as a spring. The system has multiple embodiments including the use of various sight posts.

Abstract: A boresight device includes a casing designed to be loaded into a chamber of a firearm in the place of a bolt carrier group. The casing may include one or more keyed features to engage with corresponding components of the firearm such that the one or more keyed features align an exit port in the casing to a barrel of the firearm upon loading of the casing into the chamber. The boresight device may further include a laser device for generating a laser beam. The laser device is positioned within the casing to direct the laser beam through the exit port of the casing and along an axis of the barrel when the casing is loaded into the chamber.

Abstract: A dual-adjustable mounting shoe has a shoe body. A middle portion of the shoe body has at least one pocket formed therein. At least one pocket insert is positioned at least partially within the pocket. The pocket insert has a raised tooth positioned along a rear of the shoe body and a forward edge positioned along a front of the shoe body, wherein the at least one pocket insert is movable relative to the shoe body to adjust a position of at least one of the raised tooth and the forward edge relative to the shoe body. At least one fastener is engageable with the at least one pocket insert to secure the at least one pocket insert in a stationary position at least partially within the pocket. The dual-adjustable mounting shoe is usable with both a rear-indexing receptacle and a forward-indexing receptacle.

Abstract: A modular system for mounting firearm accessories and a method for attaching a firearm accessory to a firearm are provided. In embodiment, the modular system includes a first mounting member capable of receiving a firearm accessory, and a second mounting member capable of combining with the first mounting member. A joining mechanism rotatable about an axis perpendicular to a longitudinal direction of the firearm, releasably joins the first mounting member with the second mounting member. In another embodiment, the modular system further includes an adjustment mechanism for adjusting engagement tightness of the mounting members with a mounting site to ensure more secure joining thereof.

Abstract: A structurally reinforced and water resistant, soft armor ballistic panel for use in body armor garments includes: a plurality of ballistic fabric layers, a liquid-resistant binding tape, and a binding thread. The plurality of ballistic fabric layers includes either a plurality of woven fabric layers, a plurality of unwoven fabric layers, or a combination thereof. The liquid-resistant binding tape perimetrically encompasses the plurality of ballistic fabric layers, wherein the liquid-resistant binding tape is retained in position by the binding thread; the binding thread being stitched through the liquid-resistant binding tape and the plurality of ballistic fabric layers. Together, the liquid-resistant binding tape and the binding thread retain the plurality of ballistic fabric layers in a structurally flat formation and prevent liquid or moisture from seeping into a raw cut edge of each of the plurality of ballistic fabric layers.

Abstract: Modern military aircraft are prime targets for surface to air and air to air RF guided missiles. Modern missile systems in particular are difficult to counter and have an array of Electronic Protection Measures at their disposal. Expendable Active Decoys provide effective protection for fast jet platforms by creating a realistic false target that seduces the missile away from the protected platform. They can be fitted to almost all military platforms as they are expended from standard chaff and flare dispensers. Simple repeater devices have been produced in the past but they lack the sophistication to defeat modern threats. Digital RF Memory based jammers have the necessary capability but have always been too large due to their complexity. A system architecture, design features and technologies are disclosed to reduce the size of a Digital RF Memory 12 based jammer to fit within a volume 0.5 l.

Abstract: A method is disclosed for automatically scoring a game of darts. The method involves obtaining an image of a dartboard (2) using three cameras (10), detecting a visual disturbance in the image, and identifying a validly thrown dart if the visual disturbance includes a moving phase with a maximum temporal duration and successive images of the dartboard which exhibit differences. The visual disturbance should also include a stationary phase when the dart has been embedded in the dartboard (2). The method also includes calculating a score for the validly thrown dart based on its stationary position relative to the dartboard. A lighting system for a dartboard is also disclosed where a LED strip light (14) is provided around a circumference of the dartboard and three spotlights (8) are provided above the dartboard.

Abstract: Various embodiments of optimized subsonic projectiles are provided along with related methods. For example, one exemplary subsonic projectile can include an elliptical nose cone, a cylindrical body and a boattail with various design features that can be used in a subsonic ammunition cartridge where the subsonic projectile is stabile throughout at least a segment of a flight allowing for better accuracy, maintaining low drag, maximizing range and achieving desired performance while ensuring the projectile stays below the speed of sound and lowering a noise profile of projectile and a launcher firing the projectile.

Abstract: A folding wing comprises a wing root, an upper wing part foldable relative to the wing root, at least one guiding device, and an elastically pre-stressed force element. The upper wing part comprises an end edge and a profile foot, wherein the wing root comprises a base and an opposing receiving groove, which is designed to receive the profile foot in a flush manner and is delimited by two delimiting edges having a separation distance that at least equals the maximum profile thickness of the profile foot. The guiding device is arranged at one of the upper wing part and the wing root and is designed for guiding the profile foot in a variable distance to the ground of the receiving groove. The force element is coupled with the wing root and the upper wing part and urges the upper wing part into the receiving groove through the pre-stress.

Abstract: A tracking system for locating arrows used in bow-and-arrow hunting is disclosed. The tracking system comprises a hand-held transmitter operated by a user and a receiving module embedded in an arrow. A user may locate an arrow after shooting my activating the transmitter to emit an RF signal. The receiving module in the arrow receives the RF signal and emits a sound or illuminates a LED. The transmitter may be configured to locate specific arrows of a quiver by sending an individualized RF signal to which only a specific arrow receiving module is responsive.

Abstract: A closed, self-contained ballistic apogee detection module for use in a projectile, such as a rocket, mortar round, or artillery round, fuses data from multiple built-in sensors, such as an accelerometer, a magnetometer, and a gyroscope, and processes the data using a microprocessor through a custom quaternion extended Kalman filter to provide accurate state and orientation information about the projectile so as to accurately predict apogee. The module outputs a signal indicating apogee detection or prediction which they projectile uses to initiate fuze arming, targeting control, airbody transformation, maneuvering, flow effector deployment or activation, payload exposure or deployment, and/or other mission activity. Because the system and method of the invention does not rely on external environmental data to detect apogee, it need not use a pressure sensor and can be completely sealed in and closed without requiring access to air from outside the projectile for barometric readings.

Abstract: A safety fuze for use in military and commercial applications, includes a fuze body that is attached to a trigger mechanism, an energetic train contained within the fuze body, and a non-energetic fuze delay mixture that is formed in a rod form so that it can dropped inside the fuze body, without modification to the other components of the safety fuze. Preferably, the non-energetic fuze delay mixture is made of foamed celluloid.

Abstract: A foldable ruler includes a first ruler segment, a second ruler segment pivotally coupled to the first ruler segment, a third ruler segment pivotally coupled to the second ruler segment, and a fourth ruler segment pivotally coupled to the third ruler segment. Each of the first, second, third, and fourth ruler segments includes a first side surface and a second side surface opposite the first side surface. At least one of the first and second side surfaces includes a first set of indicia representing units of measurement. Each of the first, second, third, and fourth ruler segments also includes a top surface extending between the first and second side surfaces. The top surface of the fourth ruler segment includes a second set of indicia representing a plurality of angles.

Abstract: Example systems and methods involving a construction template system are described. An example system includes a laser and a template. The laser is configured to indicate target points on a surface, such as a floor or wall of a building. Each of the target points is a predetermined location uploaded to the laser. The template includes target alignment points that correspond to the target points indicated by the laser. Furthermore, the template also includes a reference location. In examples, the reference location provides indicia of construction features as part of a building construction site. The template is adhered to the surface after aligning the target alignment points of the template with the corresponding target points.

Abstract: A silicon steel bars checking device includes a top board, a bottom board, a block unit and multiple bolts. A room is defined between the top board, the bottom board and the block unit. The silicon steel bars are inserted into the room and positioned between the top board, the bottom board and the block unit, and checked their specification. The silicon steel bars are removed from the device without any damage.

Abstract: An articulating probe for use with a coordinate measuring machine comprises an attachment portion, a measuring portion, and at least one articulating joint. The attachment portion can be configured for attachment to a coordinate measuring machine. The measuring portion can be configured to contact an object to be measured by the coordinate measuring machine. The at least one articulating joint can be configured to allow rotation between the attachment portion and the measuring portion. Further, the articulating joint can comprise an angular sensor configured to measure an angle of the joint.

Abstract: Methods for determining performance information for an object located within an area include obtaining magnetic field information for the area, measuring first magnetic field data when the object is located at a first position within the area, and determining performance information for the object within the area based on the magnetic field information for the area and the first magnetic field data.

Abstract: An imaging apparatus images an imaging object which is stored in a container having an optical transparent wall part tomographically via the wall part. An FD-OCT imaging apparatus sets an optical path length of a reference light in conjunction with a setting of a focal depth such that a position corresponding to the focal depth is between a position conjugate with a first surface and a position conjugate with a second surface in a reflected light intensity distribution representing a relationship between a position in an incident direction of an illumination light and a reflected light intensity. Here, the first surface is a surface on the imaging object side out of surfaces of the wall part. The second surface is another surface on a side opposite to the imaging object out of the surfaces of the wall part.

Abstract: Optical coherence tomography light sources can be non-linear and attempts to linearize them can lead to asynchrony between the light source and A-line scans and missampling in the scans causing signal noise. Accordingly, a system and methods are provided herein to detect missampling by obtaining a plurality of interferograms; providing at least two wavenumber reference signals at different wavenumbers, wherein the wavenumber reference signals comprise attenuated or enhanced portions of each of the plurality of interferograms; aligning each of the plurality of interferograms according to one of the at least two wavenumber reference signals; and for each of the plurality of interferograms, identifying an interferogram as missampled if another of the at least two reference signals does not align with a corresponding reference signal in a statistically significant number of the plurality of interferograms. An optical element, for example, an optical notch, may be used to generate the reference signals.

Abstract: A vibration measurement device includes: a vibration-inducing section; a laser source; a scanning section for illuminating a partial area of a measurement area on an object with laser light and moving the illumination area; an illumination control section for sequentially illuminating each point within the measurement area with an illuminating duration equal to or shorter than one third of the vibration period; a displacement measurement section for measuring, for each point within the measurement area, an interfering light obtained by splitting an object light from the object into two bundles of light to measure a relative displacement in a back-and-forth direction between two closely-located points within the measurement area; and a vibration state determination section for determining the state of vibration of the entire measurement area, based on the relative displacement in the back-and-forth direction between two closely-located points at each point within the measurement area.

Abstract: In the measurement of properties of a wafer substrate, such as Critical Dimension or overlay a sampling plan is produced 2506 defined for measuring a property of a substrate, wherein the sampling plan comprises a plurality of sub-sampling plans. The sampling plan may be constrained to a predetermined fixed number of measurement points and is used 2508 to control an inspection apparatus to perform a plurality of measurements of the property of a plurality of substrates using different sub-sampling plans for respective substrates, optionally, the results are stacked 2510 to at least partially recompose the measurement results according to the sample plan.

Abstract: The geometry measurement apparatus includes: an image acquisition part that acquires a plurality of captured images generated by imaging an object to be measured, onto which a plurality of respectively different projection patterns are sequentially projected; a quantization part that generates a quantization value of a luminance value for each pixel in the plurality of captured images by comparing the luminance value with a predetermined reference value; a selection part that selects, based on the relationship between the reference value and the luminance value for a plurality of pixels having the same coordinates in the plurality of captured images, a quantization value to be used for identifying the geometry of the object to be measured, from among a plurality of quantization values corresponding to the plurality of captured images; and a geometry identification part that identifies the geometry of the object to be measured based on the quantization value selected by the selection part.

Abstract: Methods, systems, and apparatuses are provided for estimating a location on an object in a three-dimensional scene. Multiple radiation patterns are produced by spatially modulating each of multiple first radiations with a distinct combination of one or more modulating structures, each first radiation having at least one of a distinct radiation path, a distinct source, a distinct source spectrum, or a distinct source polarization with respect to the other first radiations. The location on the object is illuminated with a portion of each of two or more of the radiation patterns, the location producing multiple object radiations, each object radiation produced in response to one of the multiple radiation patterns. Multiple measured values are produced by detecting the object radiations from the location on the object due to each pattern separately using one or more detector elements. The location on the object is estimated based on the multiple measured values.

Abstract: Spaced-apart light spots are projected in a light pattern on a target surface lying in a target plane. A range spot is projected at a position on the target surface to find a target distance to the target surface. An image of the target surface, light pattern, and range spot is captured along an imaging axis that is perpendicular to an imager plane of an imager. A controller determines an angular relationship between the imager and target planes based on the light pattern in the captured image, determines a scale relationship between the target surface and the imager based on the position of the range spot in the captured image, displays a compensated image of the target surface that is corrected in tilt by the angular relationship and in scale by the scale relationship, and determines dimensions of the target surface based on dimensions of the displayed compensated image.

Abstract: An inspection device comprises movable equipment (6) driven relative to a stand (7) and fitted with at least one inspection gauge (14, 15). The device also includes a measurement system (30) comprising a contactless transceiver system (30a) for emitting and receiving a light beam (F) along a path in which there is arranged a target (30b) that is securely mounted to the first inspection gauge, the transceiver system being secured to the stand, and delivering measurements continuously of the position of the first inspection gauge relative to the stand (7). A processor unit (31) is provided that means for detecting when the measurements of the position of the inspection gauge delivered by the transceiver system (30a) cease varying, in order to determine that contact has occurred between the inspection gauge and the container.

Abstract: Systems and methods for determining the shape and/or position of an object are described. A fiber optic shape sensor (FOSS) may be used in combination with one or more inertial measurement units (IMUs) to mutually cross-correct for errors in the sensors' measurements of position and/or orientation. The IMU(s) may be attached to the FOSS's optical fiber, such that each IMU measures the orientation of a corresponding portion of the optical fiber. The position and shape of the optical fiber can then be determined based on the measurements obtained from the IMU(s) and the measurements obtained from the FOSS. For example, the FOSS measurements and the IMU measurements can be provided to a state estimation unit (e.g., a Kalman filter), which can estimate the position and/or shape of the optical fiber based on those measurements. In some embodiments, the estimates of position are used for navigation of tethered mobile devices.

Abstract: A system and method for shape sensing with optical fiber include collecting (610) shape data from a shape sensing optical fiber device. The shape data are tested (620) to determine data positions that exceed an acceptable threshold based on geometrical expectations of the shape data. The shape data corresponding to the data positions that exceed an acceptable threshold are rejected (640). Acceptable shape data are rendered (650) to provide a stable shape sensing data set.

Abstract: Methods and scatterometry overlay metrology tools are provided, which scan a wafer region, perform focus measurements during the scanning to extract therefrom phase information, and derive depth data of the scanned wafer region from the extracted phase information. The depth information, relating to a dimension perpendicular to the wafer, may be derived along lines or surfaces, providing profilometry and surface data, respectively. The depth data may be used to locate metrology targets, as well as to provide material properties concerning wafer layers, to estimate process variation and to improve the overlay measurements.

Abstract: The present invention relates to the field of three-dimensional digital imaging, and more particularly to a three-dimensional measuring system and a measuring method with multiple measuring modes. The measuring system includes a control unit, a variable digital pattern generation unit, an image processing unit, a calculating unit and at least one image sensor; the control unit is used for controlling the cooperative work of the whole measuring system; the variable digital pattern generation unit includes a memory and a projector, and the memory stores a plurality of light template digital patterns; the image sensors are used for acquiring patterns which are projected onto a surface of a measured object; the image processing unit is a multi-mode digital image processor; and the calculating unit is a multi-mode three-dimensional point cloud calculator.

Abstract: The present disclosure relates generally to wearable devices and methods for detecting relative surface orientation. The wearable devices and methods may include a multi-mode sensor comprising emitter-detector combinations (e.g., sets or pairs) that have various spacings between the light emitter and the photodetector. Proximity curves can be generated based upon the various emitter-detector pair spacings, and used to assess surface distance and angular orientation of the wearable device to a body surface of an individual. In some variations, location and/or orientation of the device relative to the body surface is determined based on mapping data acquired by one or more emitter-detector pairs to surface distance (z distance) values based on proximity curve data stored in a memory of a device controller.

Abstract: The invention relates to a method for monitoring the safety of a joint (12) of a serial kinematic structure (30), which carries out tasks within a work region (100) under the control of a control unit (20), wherein a current state variable of the joint (12), such as the absolute position (AP) or the time derivatives thereof, is determined cyclically during operation from the current axis position (P) of the joint (12) and compared to a configurable limit value (SA, TA, SL), wherein a function module (3, 4, 5) is used to monitor the state variable. A function module (3, 4, 5) is assigned to each state variable to be monitored. These function modules (3, 4, 5) are designed independently of the control unit (20) of the serial kinematic structure (30), whereby the safety monitoring system (10) can be operated concurrently with and independently of the control unit (20) of the serial kinematic structure (30).

Abstract: A parameter setting method of a measuring instrument includes: reading model information, measurement-related setting items, and parameters corresponding to the setting items, which are stored in the measuring instrument, and temporarily storing the read data in a storage unit of a computer; displaying an appearance image of the measuring instrument corresponding to the model information on the screen and displaying icons for selecting an operation on the screen at predetermined positions of the appearance image on the screen in correlation with each other; displaying the setting item, which is able to be selected by an operation in the measuring instrument relevant to the predetermined position corresponding to the selected icon, on the screen when selection of the icon is received; receiving changing of the parameter corresponding to the setting item using the computer; and transmitting the changed parameter from the computer to the measuring instrument.

Abstract: A dimension measuring apparatus for measuring a dimension between a first data contour which is an evaluation reference of a pattern to be evaluated and a second data contour which is the pattern to be evaluated generates first correspondence information between a point on the first data contour and a point on the second data contour, determines consistency of a correspondence included in the first correspondence information, corrects an inconsistent correspondence, and generates second correspondence information, when associating a point on the first contour data and a point on the second contour data with each other.

Abstract: A near-bit dynamic well deviation angle measurement apparatus includes a circuit board and 2n+1 accelerometers. One accelerometer is installed in an axial direction of a drilling tool and forms n sets of three-axis orthogonal installation together with other 2n accelerometers. The accelerometer installed in the axial direction measures Az?, and the remaining accelerometers respectively measure n X-axis radial components and n Y-axis radial components corresponding to the n X-axis radial components. A filter and a data processing unit are integrated on the circuit board. The circuit board acquires signals in which the components are eliminated by the accelerators in real time, and further high-frequency vibration and impact interference in the signals are filtered out by using the filter to obtain non-interference gravitational acceleration components Ax, Ay and Az, and further a well deviation angle is calculated.

Abstract: Binocular depth-perception systems use binary, phase-antisymmetric gratings to cast point-source responses onto an array of photosensitive pixels. The gratings and arrays can be manufactured to tight tolerances using well characterized and readily available integrated-circuit fabrication techniques, and can thus be made small, cost-effective, and efficient. The gratings produce point-source responses that are large relative to the pitch of the pixels, and that exhibit wide ranges of spatial frequencies and orientations. Such point-source responses make it easy to distinguish the point-source responses from fixed-pattern noise the results from spatial frequencies of structures that form the array.

Abstract: A location determination processing device includes: an accepting section as defined herein; an atmospheric pressure information accepting section as defined herein; a computation result accepting section as defined herein; an identification result accepting section as defined herein; a detection result accepting section as defined herein; a determination result accepting section as defined herein; a correcting section as defined herein; and an outputting section as defined herein.

Abstract: The present disclosure illustrates a three-dimensional trace verification apparatus and method thereof. The three-dimensional trace verification apparatus includes a signal emitting module and a platform module configured to maintain a fixed relative location. When a motion trace of the platform module is different from a pre-recorded trace of a trace transmitting module, the trace transmitting outputs a deviation signal according to a sensed signal. This mechanism can achieve a technical effect of automatically verifying whether the motion trace of the platform module and the pre-record trace made by a user are the same, and recording the error.

Abstract: A tilt sensor for signaling when the tilt sensor is not vertical. The tilt sensor includes a metallic ball that is free to move and capable of resting at a low point when the tilt sensor is vertical. A proximity sensor directed at the low point communicates when the metallic ball has deviated from its position of repose, indicating that the sensor is no longer vertical.

Abstract: A tool, such as a level, including one or more magnetic coupling device is provided. The magnetic coupling device may be a magnetic circuit including metal components surrounding a magnet, such as a permanent rare-earth magnet.

Abstract: According to one aspect, embodiments herein provide a gyroscope comprising an axially symmetric structure, and a plurality of transducers, each configured to perform at least one of driving and sensing motion of the axially symmetric structure, wherein the plurality of transducers is configured to drive the axially symmetric structure in at least a first vibratory mode and a second vibratory mode, and wherein the gyroscope is implemented on a hexagonal crystal-based substrate.

Abstract: In one embodiment, a sensor includes a rigid wafer outer body. A first cavity is located within the rigid wafer outer body, and a first vibration isolating spring is supported by the rigid wafer outer body and extends into the first cavity. A second vibration isolating spring is supported by the rigid wafer outer body and extends into the first cavity, and a first sensor packaging is supported by the first vibration isolating spring and the second vibration isolating spring within the first cavity.

Abstract: Apparatus, systems, and methods associated with enhancement of phase response of intracavity phase interferometers are applicable in a variety of applications.

Abstract: A system of navigation employing an emergency longitude slide ruler for stellar navigation is described. The emergency longitude slide ruler is equipped with several wheels having rulers with settings including of the longitude slide ruler of the present invention include year, date, hour, minutes, star angle measurement degree wheel, a longitude wheel, a circumpolar star field identifier wheel, star meridian transit angles wheel, and a time zone wheel. All wheels are of diminishing diameters and are laid on top of each other in descending circumference with minute gradations allowing each consecutive wheel to line up with its larger adjacent wheel according to proper settings to eventually indicate longitude. The system presents an efficient and expedient means by which an individual with very limited knowledge of navigation and celestial bodies can determine his or her location, including longitude.

Abstract: Systems and methods for determining pose parameters of an inertial measurement unit (IMU) sensor include collecting measurement data generated by IMU sensors, using a processor to temporally integrate the measurement data, including any errors, generating a temporally continuous error propagation model, and temporally integrating the model to generate one or more compensation gradients for said pose parameters.

Abstract: The present invention provides interactive glasses including a frame, a lens, and a positioning unit, a processing unit and a display unit all fixed to the frame. The positioning unit is used for obtaining location information of current location of the interactive glasses; the processing unit is used for obtaining a relative location relation between the current location and a target location and the information of a route from the current location to the target location according to the location information of the current location and the target location; and the display unit is used for displaying image information of the route from the current location to the target location. Accordingly, the present invention further provides a navigation system. The interactive glasses can provide route from the current location to the target location for users to enable users to reach the target location quickly.

Abstract: A wearable device is configured with various sensory devices that recurrently monitor and gather data for a physical environment surrounding a user to help locate and track real-world objects. The various heterogeneous sensory devices digitize objects and the physical world. Each sensory device is configured with a threshold data change, in which, when the data picked up by one or more sensory devices surpasses the threshold, a query is performed on each sensor graph or sensory device. The queried sensor graph data is stored within a node in a spatial graph, in which nodes are connected to each other using edges to create spatial relationships between objects and spaces. Objects can be uploaded into an object graph associated with the spatial graph, in which the objects are digitized with each of the available sensors. This digital information can be subsequently used to, for example, locate the object.