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:
An aspect of the present disclosure is to provide a display apparatus capable of performing an information display function and a mirror function. Another aspect of the present disclosure is to provide a display apparatus of displaying a predetermined object in a turned-off state. Another aspect of the present disclosure is to provide a display apparatus including partition walls disposed in space between electrodes of a cholesteric Liquid Crystal Display (LCD) device. Another aspect of the present disclosure is to provide a transparent display apparatus with improved visibility using cholesteric liquid crystals. Disclosed is a display apparatus includes a reflective layer; and a liquid crystal layer disposed in front of the reflective layer, and configured to be converted between a transmissive mode for transmitting outside light, a display mode for reflecting outside light to display an object, and a transflective mode for transmitting outside light and reflecting outside light at a predetermined area.
Abstract:
The apparatus includes a heating roller that generates heat for melting toner attached to a printing medium; a first induction coil that is disposed outside the heating roller and heats the heating roller by using induced current generated according to current flowing through the first induction coil; two second induction coils that are disposed at upper portions of both ends of the first induction coil and heat the heating roller by using induced current generated according to current flowing through the two second induction coils; a power supply unit that supplies current to the first induction coil and the two second induction coils; and a control unit that controls the power supply unit to supply current flowing in the same direction or different directions to the first induction coil and the second induction coils according to the size of paper fed into the heating roller.
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 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 lidar device includes a light source configured to emit a laser pulse to an object, a light receiver configured to receive the laser pulse reflected by the object, a first periodic wave generator configured to generate a first periodic wave when the light source emits the laser pulse and generate a second periodic wave when the light source receives the laser pulse, and a first comparator configured to compare a phase of the first periodic wave and a phase of the second periodic wave to each other. The lidar device calculates a distance between the lidar device and the object based on a phase difference determined by the first comparator.
Abstract:
One aspect of the present invention is to provide an electronic apparatus which is configured to provide a color writing function by means of the physical force of an external input means, and a control method thereof. More particularly, the present invention is to provide an electronic apparatus equipped with a plurality of liquid crystal panels in an electronic apparatus so that a plurality of colors can be written by the physical force of an external input means, and a control method thereof.
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:
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:
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.