Abstract: An optical scanner includes at least one light source configured to emit light, a steering unit configured to perform scanning in a first direction based on the light emitted from the at least one light source, and a polygon mirror configured to perform, by using the light output from the steering unit, scanning in a second direction different than the first direction based on a rotation of the polygon mirror. The steering unit includes a plurality of first prisms, and each of the plurality of first prisms includes an incident facet configured to pass the light emitted from the at least one light source, and an output facet configured to refract and output the light. The polygon mirror includes a plurality of reflective facets, and each of the plurality of reflective facets is configured to that reflect the light output from the steering unit.

Abstract: A light detection and ranging (LiDAR) device includes a laser light irradiator configured to irradiate a pulsed laser light towards an object, a laser light receiver configured to detect a pulsed laser reflected light signal based on receiving the pulsed laser light reflected from the object, a signal analyzer configured to determine whether the pulsed laser reflected light signal is a low signal to noise ratio (SNR) signal based on comparing a level of the pulsed laser reflected light signal with a reference signal level, and a processor configured to, in response to a determination that the pulsed laser reflected light signal is the low SNR signal, adjust a dynamic range of an analog-to-digital converter (ADC) to sample the pulsed laser reflected light signal.

Abstract: Provided are a LiDAR device and a method of operating the LiDAR device. The LiDAR device includes a light-emitting unit configured to emit modulated light onto an object, a light-receiving unit configured to receive the modulated light reflected by the object, a computation unit configured to calculate a distance to the object based on a reception signal of the modulated light provided by the light-receiving unit, a modulation unit configured to provide a modulation signal to the light-emitting unit to generate the modulated light, and a controller configured to control operations of at least one of the light-emitting unit, the light-receiving unit, the computation unit, and the modulation unit.

Abstract: Provided are a light detection and ranging (LiDAR) device and a method using the same. The LiDAR device includes a light scanner configured to periodically scan a region in a surrounding area by sequentially changing a traveling path of incident light; a first light source configured to provide a first light to the light scanner in a first incidence direction; and a second light source configured to provide a second light to the light scanner in a second incidence direction different from the first incidence direction.

Abstract: An optical device according to an embodiment may include: a plurality of light sources configured to emit laser beams; a light direction changing unit comprising at least one of a prism and a mirror, provided on traveling paths of the laser beams, and configured to focus the laser beams at one point by changing travelling directions of the laser beams to form constant angles between the traveling paths of the laser beams; and a scanning mirror configured to perform two-dimensional scanning by reflecting the laser beams received from the light direction changing unit.

Abstract: A light detection and ranging (LiDAR) device and an operating method thereof include irradiating a laser light toward an object; outputting a laser reflection light signal by detecting the laser light reflected from the object; measuring a pulse width corresponding to a period in which the laser reflection light signal is saturated from the laser reflection light signal and changing at least one of a laser light intensity to be irradiated by the laser light irradiator or a gain of an amplifier according to the analyzed pulse width; and controlling the laser light irradiator to irradiate an adjusted laser light corresponding to the changing.

Abstract: Light detection and ranging (LiDAR) systems and methods of operating the LiDAR systems are provided. The LiDAR system includes a light emitter configured to emit first lights of different wavelengths in a vertical direction and at different scanning angles with respect to a horizontal axis, a lens configured to converge second lights that are reflected from objects on which the first lights are emitted, and a light filter comprising an active-type device configured to adjust a transmission central wavelength of the active-type device to the different wavelengths of the first lights that are emitted from the light emitter. The LiDAR system further includes a controller configured to control an operation of the light emitter and the light filter, and a detector configured to detect light from the light emitter, and obtain information about the objects.

Abstract: Provided is a beam scanning apparatus including a plurality of antenna resonators disposed two-dimensionally in a row direction and a column direction, a plurality of row voltage lines that are configured to provide a plurality of driving voltages in a row direction, respectively, a plurality of column voltage lines that are configured to provide a plurality of driving voltages in a column direction, respectively, and a driving voltage conversion circuit configured to control a driving voltage applied to each of the plurality of antenna resonators based on a driving voltage in the row direction that is provided from each of the plurality of row voltage lines and a driving voltage in the column direction that is provided from each of the plurality of column voltage lines.

Abstract: An object detection device and an operating method thereof are provided. The object detection device detects light and outputs a received signal, which is an electrical signal, time-delays a part of the received signal with respect to a rest of the received signal, converts the rest of the received signal into a digital signal, converts the time-delayed part of the received signal into one or more time-delayed digital signals, and determines a distance to an object based on the digital signal and the one or more time-delayed digital signals.

Abstract: Provided is a beam scanning apparatus including a plurality of antenna resonators disposed two-dimensionally in a row direction and a column direction, a plurality of row voltage lines that are configured to provide a plurality of driving voltages in a row direction, respectively, a plurality of column voltage lines that are configured to provide a plurality of driving voltages in a column direction, respectively, and a driving voltage conversion circuit configured to control a driving voltage applied to each of the plurality of antenna resonators based on a driving voltage in the row direction that is provided from each of the plurality of row voltage lines and a driving voltage in the column direction that is provided from each of the plurality of column voltage lines.

Abstract: Provided in a light detection and ranging (LiDAR) device including a scanning optical system including a plurality of light sources and a beam steering device, the scanning optical system being configured to scan an object with a plurality of irradiation beams projected from the plurality of light sources toward the object at a plurality of irradiation angles, respectively, a light detector including a plurality of pixel regions that are configured to separately detect the plurality of irradiation beams projected toward the object at the plurality of irradiation angles and reflected from the object, and a processor configured to control the scanning optical system and the light detector, and obtain information about the object based on the plurality of irradiation beams detected by the light detector.

Abstract: A light detection and ranging (LiDAR) device includes: a light transmitter that generates a plurality of beams to be transmitted at different times, respectively; and splits each of the plurality of beams into a plurality of sub-beams and transmit the plurality of sub-beams to a plurality of subregions of a target region at each of the different times; a light receiver including: a plurality of photodetection pixels, each of which includes a photodetection element and a circuit element configured to process an output signal of the photodetection element; and a driving lens that is located on each of the plurality of photodetection pixels and moves to focus the plurality of sub-beams that are reflected from the plurality of subregions of the target region, on the photodetection element; and a processor that performs time-division driving on the light transmitter and control a movement of the driving lens.

Abstract: Provided are a method of identifying light reflected from an object, from among light incident from a plurality of different directions, based on information about an irradiation angle of light irradiated by a light source, and a light detection and ranging (LiDAR) apparatus therefor.

Abstract: A light detection device may include: a light receiver comprising a plurality of light detectors configured to receive light emitted from a light emitter toward an object and reflected by the object; and a signal processor configured to process an electrical signal according to the light received by the light receiver. The light receiver includes at least one light receiving area, wherein each of the at least one light receiving area includes a plurality of sub-light receiving areas, and the plurality of light detectors are disposed in the plurality of sub-light receiving areas, respectively. The signal processor includes a plurality of transimpedance amplifiers that have a one-on-one correspondence with the plurality of light detectors, and at least one signal summer that has the one-on-one correspondence with the at least one light receiving area.

Abstract: Provided is a distance measuring method and device for selecting an optimum peak detection signal from among a plurality of peak detection signals, based on a level of at least one of a plurality of amplified electrical signals, and measuring a distance to an object by using the selected optimum peak detection signal.

Abstract: A light detection and ranging (LiDAR) apparatus with a wide viewing angle includes: a first rotatable mirror array including a first plurality of inclined mirrors arranged in a circumferential direction; a plurality of light sources configured to emit light toward the first rotatable mirror array; a second rotatable mirror array including a second plurality of inclined mirrors arranged in the circumferential direction, the second rotatable mirror array facing the first rotatable mirror array to reflect the light reflected by the first rotatable mirror array to an outside of the LiDAR apparatus; and a photodetector configured to detect the light reflected by the second rotatable mirror array, wherein the plurality of light sources may be provided in a plurality of sections into which an angle range of 180 degrees or more is divided in equal intervals in the circumferential direction.

Abstract: Provided are a light detection and ranging (LiDAR) device and a driving method of a LiDAR. Device. The driving method including performing a vertical scanning with respect to a subject region by using a first light reflector, performing a horizontal scanning of the subject region by using a second light reflector, and controlling a driving current applied to the first light reflector in real time during a horizontal scanning process when the vertical scanning is performed at a height different from a reference height, wherein the first light reflector has a first axis, wherein the second light reflector has a second axis, and wherein the first axis and the second axis are spaced apart from each other and perpendicular to each other.

Abstract: Provided are a LiDAR device and a method of operating the LiDAR device. The LiDAR device includes a light-emitting unit configured to emit modulated light onto an object, a light-receiving unit configured to receive the modulated light reflected by the object, a computation unit configured to calculate a distance to the object based on a reception signal of the modulated light provided by the light-receiving unit, a modulation unit configured to provide a modulation signal to the light-emitting unit to generate the modulated light, and a controller configured to control operations of at least one of the light-emitting unit, the light-receiving unit, the computation unit, and the modulation unit.

Abstract: Provided is a distance measuring device and a method of measuring a distance. The distance measuring device detects light reflected by an object, generates an electrical signal based on the detected light, detects whether the electrical signal is saturated or not by comparing the electrical signal with a reference value, controls a magnitude of the electrical signal based on whether the signal is saturated, and calculates a distance to the object using the electrical signal.

Abstract: The present disclosure is directed to providing to a smart window system capable of controlling a state of a display element (e.g., at least one of transparency, color, pattern, gradation degree, and displayed information) through various kinds of input devices and a control method thereof. In accordance with one aspect of the present disclosure, a smart window system may include a display element; an input device configured to receive a control command for the display element; and a controller configured to determine at least one of transparency, color, pattern, and gradation of the display element and information displayed on the display element on the basis of the control command.