Abstract: A laser sensor includes: a mirror configured to scan a reflection angle of laser light; a driving waveform generation circuit configured to generate a waveform of a driving signal that controls an amplitude of the mirror, according to an amplitude command value based on a target amplitude that defines a scanning range of the mirror; and a feedforward circuit configured to reflect a transient model in a case where the amplitude of the mirror transiently changes with time according to the driving signal in a case where the target amplitude is changed and a target model of a temporal change of the amplitude of the mirror on the amplitude command value through feedforward control.

Abstract: A ranging device includes: a light projection circuit configured to project laser light; a light receiving circuit configured to receive reflected light of the laser light projected by the light projection circuit; and a processor configured to: measure a time from a time when the light projection circuit projects the laser light to a time when the light receiving circuit receives the reflected light; calculate a first distance from the light projection circuit to the light receiving circuit via a ranging target, by using the time; and specify a third distance between the light projection circuit and the ranging target, by using a light projection angle of the laser light, the first distance, and a second distance between the light projection circuit and the light receiving circuit when a ratio of the first distance with respect to the second distance is equal to or less than a predetermined threshold.

Abstract: A measurement device includes: a memory; and a processor coupled to the memory and configured to: generate a drive signal with a sine wave, according to a clock signal; control a reflection direction of output light of a light emitting device, by utilizing a resonance frequency, according to the drive signal; control a timing at which the drive signal is generated; and add or remove a pulse of a reference clock signal configured to generate the clock signal, according to a phase difference between a desired control signal and the control signal.

Abstract: A distance measurement apparatus of a scanning type provided with a two-dimensional micro electro mechanical system (MEMS) mirror that reflects a laser beam includes: a first detector that detects a mirror angle of the two-dimensional MEMS mirror and outputs an angular signal that indicates the mirror angle; and a processor that calculates an amplitude error and a phase error between amplitude and a phase of the angular signal and amplitude and a phase of a reference angle signal, and corrects a resonance drive waveform of a drive signal that drives, of two mutually orthogonal axes of the two-dimensional MEMS mirror, one axis on a resonance drive side on a basis of the amplitude error and the phase error.

Abstract: A scanning-type distance measurement apparatus that includes a two-dimensional micro electro mechanical system (MEMS) mirror that reflects a laser beam includes: a memory; and a processor coupled to the memory and configured to: drive, on an axis that controls an angle of view out of two axes orthogonal to each other of the two-dimensional MEMS mirror, the axis of the two-dimensional MEMS mirror with a drive signal; and control a scanning angle range of the laser beam when a drive waveform of the drive signal is offset by an offset amount to shift a center angle of the scanning angle range, on the basis of the offset amount according to a shift direction from the center angle.

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: A mirror control device configured to output a signal that indicates a first frame immediately after the angle-of-view change and a shift change amount, generate a shift correction amount and a scanning angle range correction amount that correspond to an expected deviation amount in the first frame using the shift change amount, output a corrected angle-of-view parameter and a corrected scanning angle range, drive the scanning mirror in the first direction to drive the scanning mirror, based on output of the angle-of-view parameter correction means, drive the scanning mirror in the second direction to drive the scanning mirror through a low-pass filter.

Abstract: A laser sensor includes: a micro electro mechanical systems (MEMS) mirror that performs scanning in a reflection direction of laser light of a light emitting device on a first axis in a resonance direction and a second axis in a non-resonant direction; and a processor that performs control that synchronizes a drive cycle of the second axis with the drive cycle of the second axis of the MEMS mirror mounted on another laser sensor, using a timing designated based on the drive cycle of the first axis.

Abstract: A distance measurement device includes the plurality of laser sensors and a processor. The plurality of laser sensors configured to project a laser beam and receive reflected light from a measurement target that moves within a measurement region. The processor configured to drive, based on the measurement region and a provision position of the plurality of laser sensors, each of the laser sensors at a light emission cycle in which a light receiving window that receives reflected light of own light and an interference risk range are included the interference risk range being a range in which an interference is caused by a laser beam from another laser sensor. The processor controls to laser beam emission timings of the plurality of laser sensors so as to be different from each other.

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 measurement method executed by a computer, the method includes executing transmission processing and measuring processing, the transmission processing including a process of notifying a first signal instructing light emitting processing and the measuring processing, the measuring processing including a process of identifying a distance by measuring a time from a reception time of the first signal; setting a communication path for notifying a second signal output by the transmission processing to the measuring processing via a transceiver for transmitting a synchronization signal, the synchronization signal being for notifying an external measurement device of a light emission output by the light emitting processing; and identifying a timing for transmitting the synchronization signal output by the transmission processing based on a time difference between a time for receiving the second signal not through the transceiver and a time for receiving the second signal via the transceiver.

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: 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 a first region and a second region 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 region and second region 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 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: 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: 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 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: 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 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.