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: 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 target for a surveying instrument, which receives from the surveying instrument a laser point light indicating a position and a distance measuring light to measure a distance, comprising a reflection diffusion layer for reflecting and diffusing the distance measuring light, a wavelength filter layer for selectively transmitting the laser point light passing through the reflection diffusion layer, and a transmission diffusion layer for spreading in a given direction and for transmitting the laser point light passing through the wavelength filter layer, wherein a projecting position of the laser point light can be confirmed.

Abstract: The present invention provides a position determining apparatus that has a simplified configuration adapted to produce a horizontal reference plane and an inclined reference plane simultaneously. A position determining apparatus (100) according to the present invention comprises a rotary laser apparatus (151) that emits at least two fan-shaped laser beams diverting in a plane other than horizontal plane while rotating the laser beams about a given optical axis, and an optical sensor (154) that has at least one light receiving section receiving the fan-shaped laser beams. One of the fan-shaped laser beams is different in inclination angle from the other, and in terms of a state of the laser beams received at the light receiving section, a relative position of the optical sensor to the rotary laser apparatus can be determined.

Abstract: A rotary laser apparatus includes a light-projection section configured to irradiate at least two fan-shaped beams extending in a fan-shaped form in a direction orthogonal to a rotary axis. The light-projecting section includes a laser beam source for generating a laser beam in a direction of the rotary axis, and a rotation-irradiating section configured for irradiating the laser beam from the laser beam source in directions orthogonal to the rotary axis. The rotation-irradiating section includes a plurality of penta prisms and a beam splitter. The plurality of the penta prisms are arranged in the direction of the rotary axis depending upon the number of the fan-shaped beams such that light-emitting directions of the respective penta prisms differ from each other or one another, and the beam splitter is configured to the laser beam as required the penta prism arranged above.

Abstract: The present invention relates to a three-dimensional surveying instrument used to calculate three-dimensional coordinate data by use of a surveying instrument and an imaging unit. An object of the present invention is in particular to provide a three-dimensional surveying instrument that determines positions of corresponding points by use of a surveying instrument, and that is capable of stereo displaying.

Abstract: A method for associating a stereo image, by acquiring images of an object from a first point and a second point and by associating the image at the first point and the second point, comprising a step of moving from the first point to the second point while taking an image of the object, a step of setting two or more pass points on the image of the first point, a step of comparing a preceding image and a subsequent image over time, a step of retrieving and identifying the pass points of the preceding image in the subsequent image, a step of retrieving and identifying the pass points sequentially with respect to every frame image data from the image of the first point to the image of the second point, a step of identifying the pass points of the image of the second point, and a step of associating the image at the first point with the image at the second point via the pass points.

Abstract: A surveying apparatus includes an irradiation portion provided with an objective lens, and for irradiating a ranging light toward a measured object, a ranging portion for measuring a distance per unit time more than once based on a reflection light reflected by the measured object and entered through the objective lens, a collimation optical system portion for collimating the measured object through the objective lens, the collimation optical system portion being provided with an image processing device configured to obtain a collimation image obtained through the objective lens, and a determination device to determine whether or not a moving obstacle has passed a projection optical path of the ranging light during projecting the ranging light based on an image obtained by the image processing device.

Abstract: A surveying instrument for projecting a distance measuring light to an object to be measured and for measuring a distance from a reflected light, comprising at least an image pickup unit for picking up an image of a spreading range of the distance measuring light, and a control unit for performing edge extraction from the image captured by the image pickup unit and for judging whether there is an edge or not within the spreading range.

Abstract: A surveying instrument, comprising a first image pickup unit for obtaining a first image in a collimating direction, a second image pickup unit for obtaining a second image highly magnified than the first image pickup unit, a display unit for displaying the images obtained by the first image pickup unit and the second image pickup unit, and a control unit for magnifying and continuously displaying the first image and the second image on the display unit.

Abstract: A light wave distance measuring method, using a light wave distance measuring system with a focusing function, comprising a step of comparing a reference distance to an object to be measured obtained based on a position of a focusing lens with a measuring distance obtained by light wave distance measurement, and a step of defining the measuring distance approximately equal to the reference distance as a result of measurement.

Abstract: A surveying apparatus including an objective lens; an irradiation unit for irradiating illumination light from the objective lens toward a reflector; a ranging unit for irradiating ranging light from the objective lens to measure a distance from the surveying apparatus to the reflector; an image sensor for outputting information on an image in a field of view based on light entering through the objective lens; an image processing circuit connected with the image sensor for processing the image information outputted from the image sensor; and a monitor connected with the image processing circuit for displaying an image, wherein a ranging-possible area and a position at which the reflector is located based on the illumination light reflected from the reflector are displayed in a form of figure on the image displayed on the monitor.

Abstract: A measuring method, comprising a step of drawing a line on a surface such as ground surface, a step of performing measurement along the line on a predetermined measurement range including the line, a step of acquiring an image of a range including the predetermined measurement range as an image data, a step of superimposing the image data on a measurement data, and a step of calculating a measurement data of the line from line position in the image data and from the measurement data near the line.

Abstract: A survey data processing system, comprising processing programs for preparing a 3-dimensional data at two or more points including a control point in a predetermined range by a surveying instrument, for preparing a digital image in a predetermined range including the control point taken by an image pickup device, for preparing TIN data obtained by connecting two or more points including the control point, for matching the control point on the TIN data with the control point on the image, for associating the image with a triangular net which composes the TIN data by texture mapping based on the matching, and for changing a method to display the image prepared through the texture mapping by applying calculation to the TIN data.

Abstract: A laser measuring method in a laser measuring system, which comprises a rotary laser system for projecting a laser beam by rotary irradiation and at least one photodetection system having at least one photodetector for receiving the laser beam, comprising a step of emitting at least two fan-shaped laser beams by the rotary laser system, at least one of the fan-shaped laser beams being tilted, a step of receiving the laser beams at least at three known points by the photodetection system, a step of obtaining elevation angles with respect to the rotary laser system based on photodetection signals which are formed when the photodetector receives the laser beam, and a step of measuring an installing position of the rotary laser system based on elevation angles and position data at the three known points.

Abstract: The present invention relates to a surveying instrument for measuring the distance to a target to be measured, a horizontal angle, and a vertical angle by use of reflected light. An imager can be connected to the surveying instrument. In addition, an arithmetic processing means can determine a three-dimensional position of a plane part by determining from at least three measuring points an equation that includes the plane part as the target to be measured, and then by associating digital image data to which the plane part belongs with the equation so that the plane part is identified.

Abstract: The present invention provides a solution that enables a single rotary laser apparatus to control more than one construction machines so that the construction machines can simultaneously level the terrain up or down to different elevations, respectively.

Abstract: A surveying instrument, comprising an optical system for collimating a measuring point, a driving unit for performing scanning in a measurement range the optical system, a distance-measuring unit comprising a light wave distance measuring system, an image pickup unit for taking an image in the measurement range, an image processing unit for performing image processing to extract edges from the image picked up, and a control arithmetic operation unit for selecting a point near the edge as a measuring point on the image picked up and for controlling the distance-measuring unit to carry out surveying operation of the measuring point.

Abstract: The present invention provides a surveying instrument (20), comprising a surveying instrument main unit (21) which projects a measuring light to an object to be measured and measures a position based on a reflection light from the object to be measured and an operation device (67) which is removably attached on the surveying instrument main unit, wherein the surveying instrument main unit comprises a distance measuring unit (54) and (55) for emitting the measuring light and for measuring a distance, an image pickup unit (51) and (53) for acquiring an image, a reflection mirror (45) rotatably mounted and used for directing the measuring light toward the object to be measured, for directing the reflected light from the object to be measured toward a light receiving unit, and for directing the image in a projecting direction toward the image pickup unit, a detecting means (31) for detecting a rotating position of the reflection mirror, and a control unit (74) for controlling at least the distance measuring unit,

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.