Abstract: A pair of rotary laser devices are vertically arranged while aligning their respective axes into a single axis and keeping said rotary laser devices away from each other in an axial direction thereof by a predetermined interval, and a light-receiving sensor is kept radially away from the single axis. A plurality of fan-shaped laser beams are emitted from each of the rotary laser devices, while rotating the laser beams. The laser beams include at least one fan-shaped laser beam in a plane inclined to a plane containing said single axis. The laser beams are received and detected with the light-receiving sensor. Inclinations of the rotary laser devices are determined relative to the light-receiving sensor, respectively, based on time intervals of said detection of the laser beams, and the position of the sensor are determined relative to said pair of the rotary laser devices in the axial direction.

Abstract: A laser irradiating system, comprising a light source for emitting a laser beam in elliptical shape, a light source holder for holding the light source, a base for rotatably supporting the light source holder, a first driving unit for rotating the light source holder, a deflecting optical means for deflecting the laser beam from the light source in a direction perpendicular to an optical axis, a rotator holder for holding the deflecting optical means and being rotatable around the optical axis of the light source, a cylindrical lens being arranged so that a center of the cylindrical lens is aligned with the optical axis and the laser beam from the deflecting optical means enters perpendicularly to the optical axis and for diffusing the transmitting laser beam to a fan-shaped laser beam, a control unit for controlling the first driving unit and a receiver for receiving a signal for remote-control operation, wherein an irradiating direction of the fan-shaped laser beam can be operated in remote control operatio

Abstract: A photodetection device for a rotary laser system for projecting at least two fan-shaped beams tilted at a known angle with respect to a horizontal plane and having a known spreading angle, comprising at least three photodetectors arranged in a known relationship.

Abstract: A surveying instrument, comprising a distance measuring unit for measuring a distance to a collimating point, an angle measuring unit for measuring a vertical angle and a horizontal angle of the collimating point, an image pick-up means for acquiring an image in a collimating direction, a driving unit for directing the image pick-up means in a direction of a predetermined object to be measured as selected based on an entire image data acquired by the image pick-up means, and a control arithmetic unit for recording by associating an image of an object to be measured with survey data to the object, wherein the image is picked-up in the direction directed by the driving unit and the survey data is measured by the distance measuring unit and the angle measuring unit.

Abstract: The present invention relates to a position detection instrument, and more particularly to a position detection instrument that emits distance measuring light and measuring light to perform three-dimensional measurement of a target position, and that records image data in its emission direction or in directions other than the emission direction. An object of the present invention is to provide such a position detection instrument. A light source unit emits measuring light, and an image sensor then receives its reflected light. An emitting means emits measuring light and then leads its reflected light to the image sensor. A swinging mechanism swings an emitting means, and an angle detector detects an emission direction of the emitting means accordingly. The light source unit and the image sensor are provided in such a manner that they are fixed.

Abstract: An electronically surveying apparatus of the present invention includes a storing portion for storing positional information of a surveying apparatus body and design data; an angle-measuring portion for electronically measuring an angle between a reference direction and an aimed direction; an arithmetic processing portion for obtaining a model of an expected arrangement at completion of an object which is expected to be seen from the surveying apparatus body in the aimed direction by calculation, based on the angle measured by the angle-measuring portion and the design data; and a displaying portion for displaying the model or the expected arrangement at completion of the object.

Abstract: A distance-measuring system, which comprises a light source unit for emitting a distance-measuring light, a photodetection optical system having a photodetection optical axis, a projecting optical system having a projecting light optical axis and for projecting the distance-measuring light from the light source unit to an object to be measured and for guiding the distance-measuring light reflected from the object to be measured toward the photodetection optical system, and an internal reference optical system for guiding the distance-measuring light from the light source unit to the photodetection optical system as an internal reference light, wherein the light source unit can emit two distance-measuring lights with different spreading angles, and one of the light source unit and the projection optical system has a decentering member for decentering the distance-measuring light with respect to the projecting light optical axis.

Abstract: A surveying instrument, comprising a collimation optical system and a visible laser projecting device with a visible laser light source unit for emitting a point light, wherein the surveying instrument comprises a photodetector for detecting a reflection light entering from the collimation optical system, and a control means for controlling light emission of the visible laser light source unit based on a detection result of the photodetector.

Abstract: A line laser device, comprising a light source for emitting a laser beam, a light emitting unit having optical means for projecting the laser beam from the light source in fan-like shape, an optical member arranged on the fan-shaped laser beam and for forming a spot light on a part of the fan-shaped laser beam, and support means for supporting the optical member so that the spot light formed on the fan-shaped laser beam can be shifted.

Abstract: An electric distance meter of the present invention comprises a device (1) to generate a modulation signal for modulating measuring light which is irradiated to an object, a device (4) to periodically generate an intermittent pulse signal for generating intermittent modulated measuring light by intermittently adding the modulation signal to a light emitting element (10), a device (5A) to generate an internal frequency signal (S5) with a frequency different from the modulation signal (S2), a light receiving element (27) for outputting a light receiving signal by receiving the intermittent modulated measuring light, a device (7) to generate an intermittent difference frequency signal (S7) by inputting the light receiving signal (S4) and the signal (S5), an arithmetic logical unit (36) for calculating a distance to the object based on a phase difference between a phase of the signal (S7) output from the device (7) and a phase of the intermittent difference frequency signal obtained through a reference optical pa

Abstract: The present invention relates to a position measuring instrument for, for example, scanning a photoreceiver as a target to be measured, and more particularly to an automatic position detection instrument capable of emitting distance measuring light and tracking light while turning directions of the distance measuring light and the tracking light so that three-dimensional measurement of a light receiving position is performed, and further capable of transmitting measured data to a photoreceiver provided on a target. A light source unit emits measuring light, and then a light receiving unit receives its reflected light. A scanning means emits measuring light in a scanning direction, and leads its reflected light to the light receiving unit. An angle detector detects a rotational position of the scanning means. The measuring light includes distance measuring light expanding in a fan-shaped manner. Its reflected light can be used to measure a distance to a reflector.

Abstract: A working position measuring system, comprising a rotary laser device for irradiating and rotating a laser beam and a photodetection sensor device for receiving the laser beam and for detecting a working position, wherein the rotary laser device comprises a laser projector for projecting at least two fan-shaped beams with at least one beam tilted, and the photodetection sensor device comprises at least one photodetection unit for receiving the fan-shaped beams and an arithmetic unit for calculating an elevation angle relative to the rotary laser device based on photodetection signals produced when the photodetection unit receives the light beam.

Abstract: A distance-measuring device, comprising a light source unit for emitting a distance-measuring light, a photodetection optical system, a projecting optical system for projecting the distance-measuring light from the light source unit to an object to be measured and for guiding the distance-measuring light reflected by the object to be measured to the photodetection optical system, and an internal reference optical system for guiding the distance-measuring light from the light source unit toward the photodetection optical system, wherein the light source unit can emit two distance-measuring lights having different spreading angles and having the same or almost the same wavelengths, and the photodetection optical system has an optical filter which transmits light components of narrower wavelength range of the distance-measuring light.

Abstract: The present invention is directed to a deviation detecting device that detects a deviation angle of a rotary unit of a laser light projector relative to a projector body. The deviation detecting device (190) includes a light emitter (193) attached to the projector body of the laser light projector for emitting laser light, a reflector (195) attached to the rotary unit of the laser light projector for reflecting light emitted from the light emitter, and a light receiving unit (194) attached to the projector body of the laser light projector for receiving the light reflected by the reflector. In the deviation detecting device, a position at which the light reflected by the reflector is incident upon the light receiving unit is utilized to determine a deviation angle of the rotary unit relative to the projector body.

Abstract: The present invention provides a laser sighting device, which comprises a tilt detecting device having a liquid member for forming a free liquid surface and a fixed reflection member fixedly mounted, the tilt detecting device being used for detecting angular deviation between the free liquid surface and the fixed reflection member, a main unit for accommodating the tilt detecting device, and a laser beam irradiation unit removably mounted on the main unit.

Abstract: The present invention relates to a position detection device having a function of an electronic shutter. The position detection device is devised to perform the following: a light sending means sends out emitted light, which comes from a light emitting means, to a target object; a two-dimensional light receiving means receives reflected light coming from the target object, and converts the reflected light into an electric charge; and an arithmetic processing means determines a position of the target object on the basis of a light receiving signal from the two-dimensional light receiving means. In addition, the two-dimensional light receiving means has a function of an electronic shutter for discharging an accumulated electric charge in order to adjust the quantity of received light. Moreover, the arithmetic processing means can drive the light emitting means within a period of time during which the electronic shutter is stopped and the two-dimensional light receiving means is accumulating an electric charge.

Abstract: A novel system for facilitating the work for setting the horizontal direction of a guide laser beam is disclosed. The guide laser beam (P) can be radiated in vertical and lateral directions from the horizontal direction as a reference by a guide laser beam radiator (20). The reference horizontal direction position of the guide laser beam radiator (20) is detected by a first GPS unit (75). A pole (81) has a second GPS unit (76) for detecting a horizontal position. A reference horizontal direction position of the guide laser radiator (20) is detected by the first GPS unit (75). A first horizontal direction position is detected by the second GPS unit (76) of the pole (81) set up at a first position (83), thereby specifying the direction Z1 in which the guide laser beam (P) is to be radiated from the reference horizontal direction position as an origin.

Abstract: A laser irradiating system, comprising a light source for emitting a laser beam in elliptical shape, a light source holder for holding the light source, a base for rotatably supporting the light source holder, a first driving unit for rotating the light source holder, a deflecting optical means for deflecting the laser beam from the light source in a direction perpendicular to an optical axis, a rotator holder for holding the deflecting optical means and being rotatable around the optical axis of the light source, a cylindrical lens being arranged so that a center of the cylindrical lens is aligned with the optical axis and the laser beam from the deflecting optical means enters perpendicularly to the optical axis and for diffusing the transmitting laser beam to a fan-shaped laser beam, a control unit for controlling the first driving unit and a receiver for receiving a signal for remote-control operation, wherein an irradiating direction of the fan-shaped laser beam can be operated in remote control operatio

Abstract: An optical pulse observing device enables the clear observation of indirect laser light of pulse laser light. The optical pulse observing device to be used by a user for observing pulse illumination light directly or indirectly, includes an optical shutter means that operates for alternate opening and closing in synchronism with periodic pulses of the pulse laser light so as to open only during the duration of pulses of the pulse laser light to pass pulse laser light and external light.

Abstract: A laser beam irradiation device, comprising a light source for emitting a laser beam, a cylindrical lens, an optical system for entering the laser beam to the cylindrical lens perpendicularly with respect to a center line of the cylindrical lens, and a luminous flux rotating means for rotating the incident laser beam around an optical axis of the laser beam.