Detection of a target by a surveying device is automated to achieve simple work. A surveying method uses a surveying device for detecting and identifying a target device having an entire circumference reflection prism and a code display that is arranged in a vertical direction. The surveying device has a laser scanner configured to perform laser scanning along a vertical plane while horizontally rotating. The surveying method includes performing laser scanning by emitting laser scanning light along the vertical plane while making the surveying device horizontally rotate, and detecting the code display on the basis of the laser scanning light that is reflected back.

Detection of a target by a surveying device is automated to achieve simple work. A surveying method uses a surveying device for detecting and identifying a target device having an entire circumference reflection prism and a code display that is arranged in a vertical direction. The surveying device has a laser scanner configured to perform laser scanning along a vertical plane while horizontally rotating. The surveying method includes performing laser scanning by emitting laser scanning light along the vertical plane while making the surveying device horizontally rotate, and detecting the code display on the basis of the laser scanning light that is reflected back.

A surveying instrument comprises a base; an alidade rotatable about a first axis relative to the base; and an optical measuring instrument having a measuring axis rotatable about a second axis relative to the alidade. A beam path can be provided for a light beam using components including a light source, lenses, mirrors, beam splitters, and a position-sensitive detector. The surveying can be calibrated by performing plural measurements at different orientations of the alidade relative to the base and different orientations of the measuring instrument relative to the alidade using the above components.

A surveying instrument comprises a base; an alidade rotatable about a first axis relative to the base; and an optical measuring instrument having a measuring axis rotatable about a second axis relative to the alidade. A beam path can be provided for a light beam using components including a light source, lenses, mirrors, beam splitters, and a position-sensitive detector. The surveying can be calibrated by performing plural measurements at different orientations of the alidade relative to the base and different orientations of the measuring instrument relative to the alidade using the above components.

A survey system is provided which includes a surveying instrument capable of making distance and angle measurements of a target attached to a pole, and an eyewear device including an eye sensor configured to detect an eye motion, and an input unit for inputting a command corresponding to an eye motion detected by the eye sensor into the surveying instrument, and capable of displaying an image superimposed on a landscape. Measurement points are displayed on the eyewear device by being synchronized with and superimposed on a landscape of a survey site, and from the eyewear device worn by a worker, according to an eye motion, a command is input into the surveying instrument and distance and angle measurements of the target are made. A worker can perform a work while keeping a posture gripping the pole.

Scanning density of laser scanning is increased at low cost. A laser scanning apparatus includes a horizontal rotation unit and a controller. The horizontal rotation unit determines an area of laser scanning. The controller controls rotation of the horizontal rotation unit. The horizontal rotation unit is rotated while the laser scanning is performed, whereby scanning using laser scanning light is performed in a vertical angle direction at a predetermined interval. The controller makes the horizontal rotation unit repeatedly rotate multiple times in angular ranges that partially overlap one another, in order to perform the laser scanning multiple times on areas of the laser scanning that overlap one another. Start positions of the rotation of multiple times of the horizontal rotation unit are successively shifted by a predetermined amount. The predetermined amount of shifting corresponds to a distance shorter than the predetermined interval.

A surveying instrument comprises a distance measuring unit configured to measure a distance to an object to be measured, an optical axis deflector configured to deflect a distance measuring light, a measuring direction image pickup module configured to acquires an observation image and an arithmetic control module, wherein the arithmetic control module is configured to continuously cut out sighting images around a tracking point set in the observation image, to set a first cutout sighting image as a reference sighting image, to calculate a movement amount of the sighting image with respect to the reference sighting image by an image matching of the reference sighting image and the sighting image and to control the optical axis deflector based on a calculation result in such a manner that the tracking point is positioned at a center of the sighting image.

A surveying system comprises a total station unit, a laser scanner unit and an arithmetic control unit. The total station unit comprises a frame unit, a telescope unit, a total station distance measuring unit accommodated in the telescope unit and a total station arithmetic control unit, wherein the laser scanner unit is provided on the frame unit and acquires point cloud data by rotatably irradiating a laser beam in a vertical direction, and wherein the arithmetic control unit acquires the point cloud data by a cooperation of a horizontal rotation of the frame unit and a rotary irradiation of the laser beam, compares a distance measurement result of the total station unit with a distance measurement result of the laser scanner unit and corrects the point cloud data based on a comparison result.

The present invention has an object of providing a display that makes uniform brightnesses of a display image in a plane of a display panel according to a position of an observer. The display includes a display panel, a surface light source panel that emits light toward a back surface of the display panel, a sensor that senses a position of an observer with respect to the display panel, and a controller, wherein a brightness can be adjusted for each of areas of the surface light source panel, and the controller adjusts respective brightnesses of the areas of the surface light source panel so that brightnesses of a display image in a plane of the display panel are made uniform, when the display panel is observed from the position of the observer sensed by the sensor.

The present invention has an object of providing a display that makes uniform brightnesses of a display image in a plane of a display panel according to a position of an observer. The display includes a display panel, a surface light source panel that emits light toward a back surface of the display panel, a sensor that senses a position of an observer with respect to the display panel, and a controller, wherein a brightness can be adjusted for each of areas of the surface light source panel, and the controller adjusts respective brightnesses of the areas of the surface light source panel so that brightnesses of a display image in a plane of the display panel are made uniform, when the display panel is observed from the position of the observer sensed by the sensor.