Abstract: A robust cold cathode uses an electron emitting construct design possibly for an x-ray emitter device. The electron beam emitted by the emitting construct is focused and accelerated by an electrical field towards an electron anode target. A shield is provided to prevent a cold cathode from being damaged by ion bombardment in high-voltage applications and a non-emitter zone may provide a robust ion bombardment zone. The system is further configured to provide an angled target anode or a stepped target anode to further reduce the ion bombardment damage.

Abstract: Controlling total emission current of an electron emitting construct in an x-ray emitting device by providing a cathode, providing multiple active areas each active area having a gated cone electron source, including multiple emitter tips arranged in an array, a gate electrode, and a gate interconnect lead connected to the gate electrode, providing an x-ray emitting construct comprising an anode, the anode being an x-ray target, situating the x-ray emitting construct facing the active areas face each other, selecting a set of active areas, and activating selected active areas by conductively connecting a voltage source to their associated the gate electrode interconnect lead.

Abstract: An electron emitting construct design of an x-ray emitter device is disclosed configured to facilitate radiation in the X-ray spectrum and further relates to preventing a cold cathode from being damaged by ion bombardment in high-voltage applications. The electron beam emitted by the emitting construct is focused and accelerated by an electrical field towards an electron anode target operable to attract electron beam to an associated focal spot, wherein the generated ions are accelerated along a trajectory perpendicular to the electric field in parallel to the surface of the electron anode target. More specifically, the present invention relates to realizing a robust cold cathode to avoid ion bombardments damages in high-voltage applications, by means of setting non-emitter zone surrounded by or set between the emitter areas. The system is further configured to provide an angled target anode or a stepped target anode to further reduce the ion bombardment damage.

Abstract: The disclosure relates to an image capture device comprising an electron receiving construct and an electron emitting construct, and further comprising an inner gap providing an unobstructed space between the electron emitting construct and the electron receiving construct. The disclosure further relates to an x-ray emitting device comprising an x-ray emitting construct and an electron emitting construct, said x-ray emitting construct comprising an anode, the anode being an x-ray target, wherein the x-ray emitting device may comprise an inner gap providing an unobstructed space between the electron emitting construct and the x-ray emitting construct. The disclosure further relates to an x-ray imaging system comprising an image capture device and an x-ray emitting device.

Abstract: A distance measuring apparatus includes: a plurality of two-dimensional scanning laser sensors; and a control circuit configured to control the plurality of two-dimensional scanning laser sensors, wherein each of the two-dimensional scanning laser sensors includes a light projection system configured to project laser light for scanning a measurement target, and a light reception system configured to outputs a signal corresponding to a distance to the measurement target by using a multi-division light receiving element configured to receive return light of the laser light reflected by the measurement target, and the control circuit is configured to synchronize a scanning timing of the laser light projected by a light projection system of each of adjacent two-dimensional scanning laser sensors among the plurality of two-dimensional scanning laser sensors, and cause the adjacent two-dimensional scanning laser sensors to horizontally scan the laser light in a direction opposite from each other.

Abstract: A distance measuring device executes a collection process that includes driving a MEMS mirror in each of a plurality of sensors and collecting a drive voltage of the MEMS mirror satisfying a given condition, executes a drive frequency determination process that includes determining a drive frequency of the MEMS mirror when measuring distances by the plurality of sensors based on the drive voltage of the MEMS mirror, and executes a control signal generation process that includes generating and transmitting a control signal to the plurality of sensors, the control signal including configuration information specifying the drive frequency as a drive frequency of the MEMS mirror in each of the plurality of sensors, the configuration information including the drive frequency determined by the drive frequency determination process.

Abstract: A distance measuring apparatus measures a distance to a target from a plurality of directions, and includes sensors having identical two-dimensional scan type configurations that launch a laser beam and receive reflected light from the target by a multi-segment light receiving element, and a processor. The processor performs a process including specifying a receiving part of the multi-segment light receiving element of a first sensor, that receives a second laser beam launched from a second sensor in a state in which the target is non-detectable by the first sensor, adjusting a phase in a vertical scan direction of the second laser beam with respect to that of a first laser beam launched from the first sensor, until the receiving part no longer receives the second laser beam, and integrating range images from the first and second sensors after the phase is adjusted.

Abstract: A distance measurement device controls an emission direction of a laser beam in a light projection device and a reception direction of a laser beam in a light reception device, obtains a reception intensity of the laser beam received by the light reception device, determines whether or not the laser beam received by the light reception device is a laser beam reflected by a target of distance measurement on the basis of a reception direction of the laser beam, a period of time between when the light projection device emits the laser beam and when the light reception device receives the laser beam, a reception intensity of the laser beam, and determination information, and calculates a distance to the target in a case when the laser beam received by the light reception device is the laser beam reflected by the target.

Abstract: The X-ray tube disclosed herein includes an electron emission part including an electron emission element using a cold cathode; an anode part having an anode surface with which an electron emitted from the electron emission part collides; and a focusing structure disposed between the electron emission part and a target part disposed on the anode surface. The focusing structure has a plurality of focal point areas that are applied with a voltage in a mutually independent manner. The electron emission part has first and second electron beam emission areas that are on/off controlled in a mutually independent manner. The X-ray tube is designed in such a way that a collision area of the electron beam emitted from each of the first and second electron beam emission areas on the anode surface moves in response to a voltage applied to the focusing structure.

Abstract: The X-ray tube disclosed herein includes an electron emission unit including an electron emission element using a cold cathode; an anode unit disposed opposite to the electron emission unit, with which electrons emitted from the electron emission unit collide; and a focus structure disposed between the electron emission unit and a target unit disposed on a surface of the anode unit that is opposed to the electron emission unit. The electron emission unit is divided into first and second regions which can independently be turned ON/OFF. The X-ray tube is focus-designed such that collision regions, at the anode unit, of electron beams emitted from the respective first and second regions substantially coincide with each other.

Abstract: An apparatus for distance measurement includes: a memory; and a processor coupled to the memory and configured to execute a detection process that includes detecting a measurement target in a measurement range through two-dimensional scanning of a scan angle range with laser light, and execute a changing process that includes changing a width of the scan angle range with the laser light so that sampling density has a certain value or higher based on a distance and a bearing angle from the apparatus to the measurement target.

Abstract: A method for controlling a laser radar device, the method includes: closing a first switch configured to open or close a power supply circuit including a laser element; applying a voltage in a forward direction to the laser element; illuminating an object with an electromagnetic wave emitted from the laser element; applying, to the laser element, a voltage in a reverse direction that is opposite to the forward direction when the first switch is opened; detecting a reflected wave from the object; and measuring a location of the object.

Abstract: An apparatus for laser distance measurement includes: a light-projecting circuit for projecting laser light emitted from a laser diode; a filter for transmitting a specific wavelength and suppressing a wavelength other than the specific wavelength; a photodetector including a plurality of photodetector elements, and configured to receive the laser light projected from the light-projecting circuit and reflected from a measurement object through the filter; and a controller for controlling a relative incidence angle of the reflected laser light with respect to the filter, wherein the controller causes a photodetector signal, which is to be used for calculating a distance to the measurement object, to be outputted from a photodetector element of the photodetector at a position to which a shift of a light-condensing position of the reflected laser light occurs as a result of the control of the relative incidence angle from the light-condensing position before the control.

Abstract: A distance measuring apparatus includes a projector configured to project laser beam at a projection angle to an object; a photodetector array in which a plurality of photodetectors are arranged; a condenser lens configured to concentrate, on the photodetector array, the laser beam reflected by the object positioned on a direction of the projection angle; a detector configured to detect an output of at least one of the photodetectors of the photodetector array; and a selector configured to select the photodetector from which the detector receives the output, depending on a distortion of an area on the photodetector array irradiated with the reflected laser beam when the projection angle is large, the area being determined by an angle of incidence of the reflected laser beam to the condenser lens, the angle of incidence being associated with the projection angle.

Abstract: An electron emitting construct design of an x-ray emitter device is disclosed configured to facilitate radiation in the X-ray spectrum and further relates to preventing a cold cathode from being damaged by ion bombardment in high-voltage applications. The electron beam emitted by the emitting construct is focused and accelerated by an electrical field towards an electron anode target operable to attract electron beam to an associated focal spot, wherein the generated ions are accelerated along a trajectory perpendicular to the electric field in parallel to the surface of the electron anode target. More specifically, the present invention relates to realizing a robust cold cathode to avoid ion bombardments damages in high-voltage applications, by means of setting non-emitter zone surrounded by or set between the emitter areas. The system is further configured to provide an angled target anode or a stepped target anode to further reduce the ion bombardment damage.

Abstract: This invention provides communication devices that can increase the possibility of finding a person and further can shorten the time in which the person is found. A sought device (2) supplies a power to each of a plurality of components thereof during a first time period, thereby performing a reception process. A seeking device (1) repetitively transmits a call signal during a third time period that is longer than the first interval. When having received the call signal, the sought device (2) transmits a response signal which includes identification information of the sought device during a fourth time period. The seeking device (1) uses the response signal to estimate the distance and direction of the sought device (2), and causes the identification information of the sought device (2) and information related to the distance and direction of the sought device (2) to be displayed.

Abstract: A distance measurement method, includes measuring a distance to an object by means of a distance measurement circuit of a distance measurement apparatus and by scanning a light beam; designating a first mode which controls a projection angle of the light beam so that sampling positions in a given number of successive scans do not overlap, when the distance to the object is greater than or equal to a threshold value, by using the processor; and designating a second mode which controls the projection angle of the light beam so that the sampling positions overlap in each scan, when the distance to the object is less than the threshold value, by using the processor.

Abstract: An object detection apparatus includes: a first radar configured to measure first positional information regarding a first object existing in a first scan range; a second radar configured to measure second positional information regarding a second object existing in a second scan range on the basis of second reflected wave of second wave radiated onto the second scan range including the first region and a second region, the second wave being radiated in such a way as to scan the first region in a direction opposite a direction in which the first radar radiates the first wave; and a processor configured to detect a third object existing in the first region on the basis of the first positional information and the second positional information.

Abstract: The disclosure relates to an image capture device comprising an electron receiving construct and an electron emitting construct, and further comprising an inner gap providing an unobstructed space between the electron emitting construct and the electron receiving construct. The disclosure further relates to an x-ray emitting device comprising an x-ray emitting construct and an electron emitting construct, said x-ray emitting construct comprising an anode, the anode being an x-ray target, wherein the x-ray emitting device may comprise an inner gap providing an unobstructed space between the electron emitting construct and the x-ray emitting construct. The disclosure further relates to an x-ray imaging system comprising an image capture device and an x-ray emitting device.

Abstract: A distance measurement method, includes measuring a distance to an object by means of a distance measurement circuit of a distance measurement apparatus and by scanning a light beam; designating a first mode which controls a projection angle of the light beam so that sampling positions in a given number of successive scans do not overlap, when the distance to the object is greater than or equal to a threshold value, by using the processor; and designating a second mode which controls the projection angle of the light beam so that the sampling positions overlap in each scan, when the distance to the object is less than the threshold value, by using the processor.