ELBIT SYSTEMS LTD.

A touch screen (TS) comprises a display; a frame with edges positioned opposite each other around the display; at least a first sensor array and at least a second sensor array, wherein each of the sensor arrays has a plurality of light transmitters and a plurality of light sensors, and wherein the at least first sensor array and the at least second sensor array are disposed on the first edge and the second edge of the frame, respectively, wherein the transmitters of the first sensor array are facing the light sensors on the second sensor array positioned on two opposing edges of the frame; and at least one physical obstacle located on the third edge or the fourth edge, for reducing stray light scattered or reflected by third edge or the fourth edge and arriving to the light sensors.

Systems and methods for determining a relative motion between two or more objects are disclosed. The system may include an excitation unit adapted to be disposed on a first object and configured to excite and to induce at least one change in at least a portion of a second object. The system may include a sensing unit adapted to be disposed on the first object, the sensing unit may include at least one sensor configured to detect the at least one change in the second object at two or more different time instances and to generate corresponding two or more sensor output datasets. The system may include a processing unit configured to determine a relative motion between the first object and the second object based on the two or more sensor output datasets thereof.

The presently disclosed subject matter aims to a head-mounted display (HMD) system including: (i) an image source configured to project one or more light beams associated with one or more respective images, (ii) a first optical element, including (a) a first receiving surface, (b) a first reflective element, and (c) a first projecting surface, at least one of which possesses optical power; (iii) a second optical element including (d) a second receiving surface, (e) a second reflective element, and (f) a second projecting surface, at least one of which possesses optical power; and (iv) an at least partially reflective element configured to enable the displaying of the one or more produced images to the user's eye while allowing said user to continue seeing the real world.

A direct view display system (DVDS) and a method to operate it are provided herein. The DVDS may include: a variable optical power element (VOPE); a transparent active image source located with the VOPE on a common optical axis going from an outside scene to an eye position of a viewer; and a time division multiplexer (TDM) configured to control the VOPE and the transparent active image source, wherein the TDM is configured in a certain time period to cause the transparent active image source to be in a transparent state and the VOPE to exhibit no optical power, and wherein the TDM is configured in another time period to cause said transparent active image source to exhibit an image and said VOPE to apply non-zero optical power, for projecting the image onto the eye position at a desirable distance therefrom.

A system and method for generating a focused three-dimensional (3D) point cloud is disclosed. A respective 3D point cloud is generated based on returns of a respective sequence of energy pulses that is emitted towards one or more regions-of-interest (ROIs) within a field-of-view (FOV) during a respective scan of the FOV, the returns including one or more secondary returns from one or more points within the FOV. During an additional scan of the FOV, subsequent to the respective scan, an additional sequence of energy pulses is emitted to generate a focused 3D point cloud that includes additional information regarding one or more selected points of the points associated with the secondary returns relative to the respective 3D point cloud.

An eyepiece suitable for a night vision device, having an optical combiner for injecting a synthetic image onto the scene and having a single optical correction mechanism is provided herein. The eyepiece may include an observer-side lens; an objective-side lens; a diopter adjustment knob configured to set a distance between the observer-side lens and the objective-side lens; and an optical combiner located between the objective-side lens and the objective-side lens, wherein the optical combiner reflects towards the observer-side lens, the synthetic image transmitted from outside the eyepiece and transfers towards the observer-side lens, a scene image coming from an objecting lens of the night vision device and passing through the objective side lens, and wherein the diopter adjustment knob serves as a single setting mechanism which simultaneously sets a diopter of the observer and a focal depth of the display source image.

An eyepiece suitable for a night vision device, having an optical combiner for injecting a synthetic image onto the scene and having a single optical correction mechanism is provided herein. The eyepiece may include an observer-side lens; an objective-side lens; a diopter adjustment knob configured to set a distance between the observer-side lens and the objective-side lens; and an optical combiner located between the objective-side lens and the objective-side lens, wherein the optical combiner reflects towards the observer-side lens, the synthetic image transmitted from outside the eyepiece and transfers towards the observer-side lens, a scene image coming from an objecting lens of the night vision device and passing through the objective side lens, and wherein the diopter adjustment knob serves as a single setting mechanism which simultaneously sets a diopter of the observer and a focal depth of the display source image.

A method of determining a configuration of a measurement volume, the method may include: generating, by at least one transmitter, a transmitted magnetic field within the measurement volume; measuring, by at least one receiver positioned, a total magnetic field in the measurement volume at at least one receiver position and generating at least one receiver output signal; generating, by a processing unit, a measured dataset; comparing, by the processing unit, the measured dataset with at least one of at least two reference configuration datasets each for determined for one of at least two different configurations of the measurement volume; and identifying, by the processing unit, a reference configuration dataset of the at least two reference configuration datasets that corresponds to the measured dataset.

An electronic assembly with heat spreading coating is having a PCB carrying conducting traces heat producing electronic components. An electrically isolating polymeric coating is applied over the electric the traces and the heat producing electronic components. The electrically isolating polymeric coating conforms with an irregular structure of the PCB. A heat spreading layer is applied over the polymeric coating. The heat spreading layer comprises: at least one heat spreading zone selected from the group consisting of: a plurality of graphene nano-platelets, a plurality of graphene particles, a plurality of boron-nitride particles, a plurality of graphene flakes, a plurality of boron-nitride flakes, at least one graphene sheets, and combination thereof; and a binder, wherein the electrically isolating polymeric coating adheres to the PCB and covers the electric conducting traces and the heat producing electronic components, and the heat spreading layer conforms to the irregular structure of the polymeric coating.

Head wearable display (HWD) systems and methods of display reliability verification with respect to the HWD operated by a user are provided, which comprise tracking a position and orientation (P&O) of the HWD relative to hardware element(s) at known position(s), which are selected from a surroundings of the user and are visible to the user through the HWD, calculating position(s) of the hardware element(s) with respect to the HWD, and displaying, in the HWD and according to the calculated position(s), verification symbol(s) that correspond to the hardware element(s). Display reliability verification may be carried out automatically using a camera and an image processing module, optionally with an additional illuminator, which compares the element(s)'s captured locations with the element(s)'s expected location according to the tracking, and indicates possible discrepancies. Discrepancy identification may be used to initiate a correction process or to indicate the presented symbology to be unreliable.