Abstract: A laser scanner which includes a mobile station calculates a two-dimensional fixed station coordinate system formed at least three fixed stations, calculates coordinates of intersections of at least three circles, which have the fixed stations as their centers and the distances between each of the fixed stations and the mobile station as their radii, at every predetermined angle as each positioning result of the mobile station while horizontally rotating the laser scanner by 360° around a mechanical point, averages each of the positioning results corresponding to 360° and calculates approximate mechanical point coordinates in the fixed station coordinate system.

Abstract: A first device transmits a first random number to a second device through a first quantum channel, and receives a second random number from the second device through a second quantum channel. The first device generates a first encryption key based on the first random number and the second random number. The second device transmits the second random number to the first device through the second quantum channel, and receives the first random number from the first device through the first quantum channel. The second device generates a second encryption key based on the first random number and the second random number.

Abstract: The invention provides a measuring system, which comprises a plurality of measuring units and a leveling unit common to the plurality of measuring units, the leveling unit has a recessed fitting portion on an upper surface, and the plurality of measuring units each has a projecting fitting portion which is engageable and disengageable with respect to the recessed fitting portion, wherein the plurality of measuring units are constituted to be attachable and detachable with respect to the leveling unit, and in a state where each of the measuring units is mounted on the leveling unit, a same object to be measured is measured respectively, an offset amount between each of the measuring units is measured, and based on the offset amount, a measurement value measured in each of the measuring units is corrected and coordinate-converted.

Abstract: In order to achieve the dispersion of a processing load between communication devices that perform information transmission, an information communication system according to an exemplary aspect of the present invention includes a first transmission system configured to transmit information in a direction from a first communication device to a second communication device; and a second transmission system configured to transmit information in a direction opposite to the direction of the first transmission system, wherein part of transmission information is received as received information in each of the first transmission system and the second transmission system.

Abstract: The invention provides a laser scanner system, which comprises a laser scanner which includes a distance measuring unit for emitting a distance measuring light, receiving a reflected light, and performing a distance measurement, a scanning unit for rotatably irradiating the distance measuring light, a directional angle detecting unit for detecting an irradiating direction of the distance measuring light, a GNSS device and a control arithmetic unit, and a target which sets a back sight point, wherein the control arithmetic unit has a target scanning mode and a point cloud data measurement mode, and is configured to calculate point cloud data with a global coordinate value and a global coordinate value of the target based on the global coordinate value obtained by the GNSS device, a measurement result obtained by executing the point cloud data measurement mode and a measurement result obtained by executing the target scanning mode.

Abstract: A laser scanner which includes a mobile station calculates a two-dimensional fixed station coordinate system formed at least three fixed stations, calculates coordinates of intersections of at least three circles, which have the fixed stations as their centers and the distances between each of the fixed stations and the mobile station as their radii, at every predetermined angle as each positioning result of the mobile station while horizontally rotating the laser scanner by 360° around a mechanical point, averages each of the positioning results corresponding to 360° and calculates approximate mechanical point coordinates in the fixed station coordinate system.

Abstract: A surveying instrument comprises a projection optical system for irradiating a distance measuring light which is a linearly-polarized light to an object to be measured, a light receiving optical system for receiving a reflected distance measuring light from the object to be measured, a polarization selecting module for selecting a polarization of the reflected distance measuring light received by the light receiving optical system and an arithmetic control module for controlling a distance measurement based on a light receiving result of the reflected distance measuring light, wherein the arithmetic control module is configured to give a material information to a distance measurement result of the object to be measured based on a change in light receiving amounts caused due to a selection of the polarization by the polarization selecting module.

Abstract: The invention provides a laser scanner system, which comprises a laser scanner which includes a distance measuring unit for receiving a reflection light of a distance measuring light from an object to be measured and performing a distance measurement, a scanning unit for rotatably irradiating the distance measuring light, a directional angle detecting unit for detecting an irradiating direction of the distance measuring light, a GNSS device, and a control arithmetic unit, wherein the laser scanner is installed at two points, and wherein the control arithmetic unit obtains global coordinates of installation positions of the laser scanner from the GNSS device respectively, scans the distance measuring light over a total circumference at each of the installation positions, acquires point cloud data of the total circumference, performs a shape matching of the two point cloud data and combines the two point cloud data.

Abstract: A three-dimensional measurement device includes a light source unit that emits distance measurement light, a projection light optical system that causes the distance measurement light, emitted by the light source unit, to be emitted along a distance measurement light axis, a light receiving optical unit that receives the reflected distance measurement light, a light receiving and splitting unit that splits the reflected distance measurement light that has transmitted through the light receiving optical unit into first reflected split light and second reflected split light, attenuates intensity of the second reflected split light to be lower than intensity of the first reflected split light, and converts the first reflected split light and the second reflected split light into electrical signals, and angle detection units that detect a light emitting direction of the distance measurement light.

Abstract: A quantum key distribution device is provided with an encoding unit which encodes an optical pulse train; an intensity modulating unit which subjects the encoded optical pulse train to N (where N is an integer at least equal to 3) types of intensity modulation having mutually different intensities, with different timings; and a first key distillation processing unit which generates an encryption key on the basis of a data sequence obtained by removing data obtained from an optical pulse having a specific modulation pattern from a data sequence used by the encoding unit and the intensity modulating unit.

Abstract: A circuit configured to emit pulsed light includes a voltage generating circuit, a light emitting element, a circuit wiring that connects the voltage generating circuit and the light emitting element, a charge capacitor with its end connected to the circuit wiring, and a switching element configured to be turned on or off to apply voltage to the light emitting element. The inductance component for the circuit wiring is derived based on a relationship of the pattern length, pattern width and pattern thickness of the circuit wiring. In this manner, an inductance value of not greater than 1.4 nH can be set and suitably used for achieving an attenuation of at or below 3 dB in a circuit emitting light at a pulse width of 2 ns or less.

Abstract: A surveying instrument comprises a first measuring component having a control module and a second measuring component, wherein the control module acquires point cloud data of a whole circumference in a room with the use of the second measuring component in accordance with each installation point, makes the first measuring component to measure a predetermined position in the room, prepares outer shape data of a same height and a same shape in accordance with each installation point based on a measurement result of the first measuring component or the second measuring component, performs a shape matching of each outer shape data, and registers each point cloud data based on a movement amount and a rotation amount at the time of performing the shape matching.

Abstract: A laser measuring instrument comprises a light emitter, a driver, a scanning unit, a light receiving signal processing module for detecting a reciprocating time per pulsed light of a distance measuring light and performing a distance measurement, and a timing generating circuit for issuing a timing signal, wherein the timing generating circuit is configured to issue a timing signal for making the light emitter pulse-emit in a short cycle and a timing signal for pausing a light emission, the driver is configured to make the light emitter pulse-emit according to the timing signals, a light emission time interval in the short cycle is set such that a measuring point is multiply irradiated with the pulsed light by two or more times within a time when the pulsed light passes the measuring point, and the light receiving signal processing module is configured to integrate acquired light receiving signals and to carry out the distance measurement.

Abstract: A surveying instrument comprises a light projecting optical system for projecting a distance measuring light to a predetermined measuring point, a light receiving optical system for receiving a reflected distance measuring light and an infrared light from the measuring point, and an arithmetic control module for controlling a distance measurement and a temperature measurement based on light receiving results of the reflected distance measuring light and the infrared light, and the arithmetic control module measures a distance to the measuring point based on light receiving results of the reflected distance measuring light received by a photodetector of the light receiving optical system, and measures a temperature of the measuring point based on light receiving results of the infrared light received by a temperature sensor of the light receiving optical system.

Abstract: A 3-dimensional measuring device includes: a light source unit; a projection optical system; a scanning mirror that is provided to be rotatable about a rotating shaft in a state of being inclined with respect to a shaft center of the rotating shaft to radiate a range-finding light within a plane crossing the rotating shaft in a rotary manner; a light-receiving optical system that receives a reflection range-finding light; a reference light optical system that is provided in a range outside a measuring range within a radiation range to receive and reflect the range-finding light as an internal reference light, the reference light optical system being capable of changing a light quantity of the internal reference light; and a light receiving element that receives the reflection range-finding light and the internal reference light.

Abstract: A laser scanner comprises a distance measuring component for measuring a distance to a measuring point, a frame unit which horizontally rotates, a scanning mirror which scans a distance measuring light by rotating vertically, angle detecting components for detecting a horizontal angle of the frame unit and a vertical angle of the scanning mirror and an arithmetic control component, wherein the arithmetic control component sets a distance between measuring points adjacent in a radial direction as a first distance between measuring points, sets a distance between measuring points adjacent in a circumferential direction as a second distance between measuring points, calculates a first interval of measuring angles which becomes the first distance between measuring points and a second interval of measuring angles which becomes the second distance between measuring points at a measuring point and acquires point cloud data of a plane to be measured based on the first interval of measuring angles and the second inter

Abstract: A three-dimensional measurement device includes a light source unit that emits distance measurement light, a projection light optical system that causes the distance measurement light, emitted by the light source unit, to be emitted along a distance measurement light axis, a light receiving optical unit that receives the reflected distance measurement light, a light receiving and splitting unit that splits the reflected distance measurement light that has transmitted through the light receiving optical unit into first reflected split light and second reflected split light, attenuates intensity of the second reflected split light to be lower than intensity of the first reflected split light, and converts the first reflected split light and the second reflected split light into electrical signals, and angle detection units that detect a light emitting direction of the distance measurement light.

Abstract: Provided is a measurement device or the like that expands a dynamic range easily and promptly as appropriate even when three-dimensional data or the like on some parts of a measurement target object is not acquirable, so that the data can be acquired. A measurement device includes a light source unit that sequentially emits a plurality of beams of distance measurement light to an identical target object, based on predetermined fixed output information, a light reception unit that receives reflected light, from the target object, based on which the measurement device acquires measurement information, and an output value reducing unit and/or an input value reducing unit, the output value reducing unit reducing an output value of the light source unit, the input value reducing unit reducing an input value of the reflected light to the light reception unit.

Abstract: The invention provides a measuring system, which comprises a plurality of measuring units and a leveling unit common to the plurality of measuring units, the leveling unit has a recessed fitting portion on an upper surface, and the plurality of measuring units each has a projecting fitting portion which is engageable and disengageable with respect to the recessed fitting portion, wherein the plurality of measuring units are constituted to be attachable and detachable with respect to the leveling unit, and in a state where each of the measuring units is mounted on the leveling unit, a same object to be measured is measured respectively, an offset amount between each of the measuring units is measured, and based on the offset amount, a measurement value measured in each of the measuring units is corrected and coordinate-converted.

Abstract: (Object) To provide an optical receiver and a control method thereof that enable equalization of both the quantum efficiencies and the dark count probabilities of multiple photon detectors. (Solving Means) An optical receiver includes multiple photon detectors, a first equalizing means that equalizes either dark count probabilities or quantum efficiencies of the multiple photon detectors, and a second equalizing means that equalizes the other ones without affecting the equalization by the first equalizing means.