| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 356300010 | Triangulation ranging to a point with one projected beam | 33 |
| 20080212065 | METHOD OF DETERMINING THE FLATNESS OF A FOUNDATION TO WHICH A BUILDING STRUCTURE, MACHINERY OR EQUIPMENT IS TO BE MOUNTED - A method for measuring flatness of a factory floor upon which machinery is to be mounted using a rotating laser beam that emits a rotating laser beam in an essentially horizontally plane. A photosensitive position sensor delivers an electrical pulse, which is identified by its timing and phase angle, during illumination by the laser beam. The phase angle and timing of these pulses constitute a measure of the position of the sensor in the coordinate system. Measurements are taken with the sensor positioned at each location at which the machinery is to be fixed to a factory floor. The method determines any differences in height between the measurement points and the amount, if any, that the floor needs to be adjusted at each mounting point to insure that a machine that is affixed to the floor these points will be level. | 09-04-2008 |
| 20090109420 | Surveying Method and Surveying Instrument - A surveying method using a the video total station comprises placing the video total station on a first platform, recording a first image of scenery, placing the video total solution on a second platform disposed at a distance from the first platform, measuring the distance from the first platform and recording a second image of the scenery. Three-dimensional coordinates of objects contained in the images are determined by a photogrammetric analysis of the images based on the measured distance. Further, orientations of the video total station can be recorded when taking the images and when measuring the distance. | 04-30-2009 |
| 20090185157 | PATTERN PROJECTION LIGHT SOURCE AND COMPOUND-EYE DISTANCE MEASUREMENT APPARATUS - A pattern projection light source is disclosed in which a light source ( | 07-23-2009 |
| 20100157278 | Method and optical sensor for the detection of objects - The invention relates to a method for the detection of objects in a detection region, wherein at least one transmitted light bundle is transmitted into the detection region, transmitted light reflected back or remitted back from an object, when present, is detected by a receiver unit having reception elements arranged in the form of an M×N matrix, wherein M>1 and N>1, and the distance of the object is determined by triangulation from the position of the at least one light patch produced by the reflected or remitted light at the receiver unit. In addition to the position of the reflected or remitted light, the two-dimensional energy distribution of the at least one received light patch within the light incident on the receiver unit is evaluated to determine further information on the object in addition to the distance of the object determined by triangulation, with a light patch quality value being determined which includes information on the homogeneity of the light reflected or remitted at the object. The invention furthermore relates to an optical sensor for the carrying out of a method in accordance with the invention. | 06-24-2010 |
| 20120176592 | OPTICAL SENSOR - A method for optically detecting objects includes emitting light rays that are projected as a light line onto an object structure to be detected. The light rays are imaged on a matrix of receiving elements of a receiver to produce receiving element signals. The receiving element signals are evaluated by a triangulation principle to generate a distance profile. The evaluating includes: generating at least one evaluation window which encompasses a local range extending in a direction along the light line, generating a number of object points representing outputs of the respective receiving element that correspond to respective distances extending in a second direction, and generating a binary state information as a function of the number object points that fall within the evaluation window. | 07-12-2012 |
| 20120262693 | ABSOLUTE DISTANCE METER THAT USES A FIBER-OPTIC SWITCH TO REDUCE DRIFT - A measurement device is configured to send a first light beam to a target which returns a reflected portion. The device includes a switch configured to receive a first signal, and to send the second portion out of the switch measure port if the first signal is in the first state or out of the switch reference port if the first signal is in the second state. The device also includes a first electrical circuit configured to provide the first signal, to convert the third portion into a first reference value, to convert the fifth portion into a first measure value if the first signal is in the first state, and to convert the seventh portion into a second reference value if the first signal is in the second state; and a processor configured to determine a first distance from the device to the target. | 10-18-2012 |
| 20120287416 | SENSOR AND METHOD FOR OPTICALLY MEASURING A DISTANCE, A POSITION, AND/OR A PROFILE - An optical sensor for measuring at least one of a range, a position, and a profile of an object that is to be measured, the measured object emitting electromagnetic radiation due to the temperature of the object to be measured, and the sensor having a light source for illuminating the surface of the measured object and a detector for detecting the illuminating light reflected at the object to be measured, wherein with respect to the measurability even on the bodies that emit electromagnetic radiation, the light generated by the light source has a wavelength below the peak of the Planck radiation spectrum of the object that is to be measured. A corresponding method is specified. | 11-15-2012 |
| 20130003037 | DISTANCE BASED POSITION SENSING - Systems, methods, and other embodiments associated with distance based position measurement are described. In one embodiment, an apparatus is configured to be positioned proximate a feature of interest. The apparatus includes a laser distance meter (LDM) configured to emit a laser beam and to determine first and second distances between the LDM and first and second targets. The first and second targets have known positions in three dimensions with respect to a reference plane from which the LDM is located. The apparatus also includes a trilateration unit configured to compute a two dimensional position of the LDM relative to the targets based, at least in part, on the first and second distances. | 01-03-2013 |
| 20130077081 | LASER RANGEFINDER - A laser rangefinder of the present invention is utilized for detecting and displaying the distance user interests in. The laser rangefinder has a range detector and an angle detector. Thus, the laser rangefinder is able to detecting a distance between an object and the laser rangefinder and an oblique angle thereof. The laser rangefinder further has a micro processor which provides a horizontal distance according to the distance and the angle detected above. As such, the laser rangefinder can show up with the horizontal distance between the object and the laser rangefinder without disturbance of oblique thereof. | 03-28-2013 |
| 20130215409 | TRIANGULATION LIGHT SENSOR - A triangulation light sensor includes at least one light transmitter for transmitting a light signal into a detection zone, a light receiver having a plurality of receiver elements for receiving light from the detection zone reflected diffusely and/or specularly, and a reception optics arranged between the detection zone and the light receiver in the beam path, with the position of a light spot produced on the light receiver in a triangulation direction by the reflected light resulting in dependence on the distance of the object. The reception optics includes at least one multisegmented lens element having a plurality of lens segments with mutually spaced apart optical axes in the triangulation direction and at least one freeform lens element or one diffractive-optical element having a multisegmented lens element having a plurality of lens segments with optical axes spaced apart from one another in the triangulation direction. | 08-22-2013 |
| 20130293867 | Distance-measuring device of measuring distance according to variation of imaging location and calibrating method thereof - A distance-measuring device is utilized for measuring a measured distance between a measured object and the distance-measuring device. The distance-measuring device reduces the effect of a background light and a flicking light by removing the part corresponding to the background light and the flicking light from light-sensed signals generated by an image sensor of the distance-measuring device. In addition, the distance-measuring device calculates a calibrating parameter for calibrating an assemble-error angle of the distance-measuring device, according to an imaging location of a reflective light obtained by measuring a calibrating object with a predetermined distance. In this way, the distance-measuring device can correctly calculate out the measured distance. | 11-07-2013 |
| 20150098075 | SCANNER FOR SPACE MEASUREMENT - Some embodiments of the invention relate to a surveying apparatus in the form of a scanner comprising a beam deflection unit, such a beam deflection unit and a measuring method to be carried out with said surveying apparatus. The surveying apparatus comprises a radiation source for generating measurement radiation and a detector for receiving reflected measurement radiation, called reflection radiation for short, which was reflected at an object of interest, wherein measurement radiation and reflection radiation have substantially the same optical path. Situated in said optical path there is a beam deflection unit mounted rotatably about a rotation axis and serving for adjustably aligning the measurement radiation and for capturing the reflected radiation | 04-09-2015 |
| 20160061953 | POSITION MEASUREMENT APPARATUS - A position measurement apparatus includes a measurement head, a controller and a light transmission section. The measurement head includes a light projecting lens and a light receiving lens. The controller includes a light emitting section, a light emission circuit controlling the light emitting section, a light receiving section, and a pixel data processing circuit detecting a position of light received in the light receiving section, and outputting positional information to a calculation section calculating a position of an object to be measured. The light transmission section includes an optical fiber transmitting light from the light emitting section to the light projecting lens, and an image fiber with incidence and emission end faces, in which end faces of plural cores are two-dimensionally arrayed in the incidence end face and the emission end face, the image fiber transmitting light converged by the light receiving lens to the light receiving section. | 03-03-2016 |
| 20160069678 | Measuring Apparatus - A height measuring apparatus comprising a main body portion adapted for placement upon an object to be measured, and a movable portion which is movable relative to the main body portion, wherein the movable portion comprises a laser source and a photo detector, the movable portion being movable so that a laser beam from the laser source can be directed to the ground when the main body is placed on the object to be measured. | 03-10-2016 |
| 20160187485 | METHOD AND SYSTEM FOR OPTICAL DISTANCE MEASUREMENT - An optical distance measurement method includes: acquiring a plurality of sensed values based on detecting light; performing a filtering operation to select a plurality of selected sensed values from the plurality of sensed values; determining a location of a center of gravity according to the plurality of selected sensed values; and calculating a plurality of depth values with respect to a plurality of detection points according to the location of the center of gravity and a plurality of depth information transformation functions respectively corresponding to the detection points. | 06-30-2016 |
| 20160252619 | LASER TRACKER HAVING TARGET-SEEKING FUNCTIONALITY | 09-01-2016 |
| 356300020 | Using photodetection with a fixed axial line of sight | 3 |
| 20080212066 | METHOD FOR THE DETECTION OF AN OBJECT AND OPTOELECTRONIC APPARATUS - The present invention relates to a method for the detection of an object by means of an optoelectronic apparatus, wherein light rays generated by a light source are incident onto an object as a light bead and the light rays scattered back and/or reflected from the object are detected by a receiver arrangement in accordance with the triangulation principle and an object detection signal including information on a scanning distance between the apparatus and the object is output, with the light rays acting via an imaging element on a pixel array consisting of photodetectors in the receiver arrangement. The method is characterized in that the imaging element is only an array of individual imaging elements positioned before the pixel array and generating a received signal pattern on the pixel array corresponding to a plurality of mutually spaced apart images of the light bead; and in that the information on the scanning distance is determined from the received signal pattern. The present invention furthermore relates to an optoelectronic apparatus for the carrying out of the method. | 09-04-2008 |
| 20090180098 | Determining target distance in imaging reader - A target distance to a system target located at variable distances from an imaging system is determined by illuminating a calibration target at a calibration distance with a collimated light beam during a calibration mode of operation, by illuminating the system target at the variable target distance with the collimated light beam during an imaging mode of operation, by configuring the collimated light beam with a beam spot of a generally constant size during both modes of operation, by capturing return light of a calibration image size from the calibration target during the calibration mode, by capturing return light of a target image size from the system target during the imaging mode, and by determining the variable target distance based on the calibration distance, the calibration image size, and the target image size. | 07-16-2009 |
| 20150308818 | METHOD FOR CORRECTING A 3D MEASUREMENT OF A SPHERICALLY MOUNTED RETROREFLECTOR ON A NEST - A method for measuring a spherically mounted retroreflector (SMR) with a 3D coordinate measurement device placed on a kinematic nest, the method accounting for the radius of the SMR. | 10-29-2015 |
| 356300030 | Using a source beam with a fixed axial direction or plane | 4 |
| 20090079954 | Method and Device for Measuring Distances - Described are systems/devices and methods for measuring distances using a laser distance meter. The device may include a range finder measuring a distance; and a processor receiving the distance from the range finder and performing a calculation based on the distance. The method may include steps of determining, using a range finder included in a mobile device, a distance; and calculating, using a processor of the mobile device, one of an area and a volume based on the distance. | 03-26-2009 |
| 20090231570 | CONCAVE-CONVEX SURFACE INSPECTION APPARATUS - A concave-convex surface inspection apparatus includes a slit light source unit emitting a slit light to a concave-convex surface of an object to be inspected, an image-taking unit taking an image of the concave-convex surface illuminated by the emitted slit light with an imaging optical axis intersecting with an optical axis of the slit light with a narrow-angle equal to or narrower than 30 degrees, and an evaluation section obtaining a three dimensional shape of the concave-convex surface and evaluating the obtained three dimensional shape, wherein the slit light source unit includes a slit light source and a cylindrical lens, the image-taking unit includes a telecentric lens unit, an image-taking section having an imaging surface tilted relative to the imaging optical axis for increasing a focusing range of the concave-convex surface, and a P polarizer. | 09-17-2009 |
| 356300040 | With a single staring photodetector having one element | 1 |
| 356300050 | Having moving receiver optics | 1 |
| 20150354953 | LASER TRIANGULATION SENSOR AND METHOD OF MEASUREMENT WITH LASER TRIANGULATION SENSOR - An apparatus for measuring the distance to a workpiece, in particular a laser triangulation device is described. The apparatus includes a source of coherent radiation for illuminating the workpiece along an optical axis at a first angle relative to the surface of the workpiece, and an optical arrangement for detecting scattered light generated by the illumination, wherein the optical arrangement detects the scattered light at a second angle relative to the surface of the workpiece and wherein the second angle is different from the first angle. The optical arrangement includes detector that is spatially resolving it at least one dimension for the spatial resolved detection of the scattered light, and an interferometer comprising at least one moveably arranged mirror, which is disposed in the optical arrangement in such a way as to be in the path of at least a portion of the scattered light. | 12-10-2015 |
| 356300080 | With at least one paired set of staring photodetectors | 1 |
| 20140268093 | THREE-DIMENSIONAL COORDINATE SCANNER AND METHOD OF OPERATION - A noncontact optical three-dimensional measuring device that includes a projector, a first camera, and a second camera; a processor electrically coupled to the projector, the first camera and the second camera; and computer readable media which, when executed by the processor, causes the first digital signal to be collected at a first time and the second digital signal to be collected at a second time different than the first time and determines three-dimensional coordinates of a first point on the surface based at least in part on the first digital signal and the first distance and determines three-dimensional coordinates of a second point on the surface based at least in part on the second digital signal and the second distance. | 09-18-2014 |
| 356300090 | Requiring scanning of a source beam | 10 |
| 20100053591 | Scanned Proximity Detection Method and Apparatus for a Scanned Image Projection System - A encoded image projection system ( | 03-04-2010 |
| 20100165321 | POSITION MEASURING DEVICE AND POSITION MEASURING METHOD IN SEMICONDUCTOR SINGLE CRYSTAL MANUFACTURING DEVICE - While position measurement of an edge position of a thermal shield takes place in a short time with high working efficiency, the edge position can be measured accurately without variation. First determination takes place while a distance is measured with a first scanning interval. When a change in a measured distance which can be determined as the edge position is determined as a result, an optical scanning position is returned by a predetermined amount reversely to the scanning direction (or reversely to the scanning direction), and while laser beam is scanned again from the returned optical scanning position, second determination takes place while measuring the distance with a second scanning interval shorter than the first scanning interval. If a change in the measured distance which can be determined as the edge position is determined as a result, the laser beam is determined finally to be reflected at an edge of a rim of the thermal shield at the optical scanning position at a time point when the change is determined. | 07-01-2010 |
| 20120105821 | TRACKING METHOD AND MEASURING SYSTEM HAVING A LASER TRACKER - A target equipped with a reflector can be tracked in a measuring system including a laser tracker. The reflector is tracked by means of a tracking unit in a normal tracking mode and by means of a surveying device in an extraordinary tracking mode. A capturing unit having a detection range lying between the detection ranges of the tracking unit and of the surveying device is also present. If the target cannot be detected by the tracking unit but can be detected by the capturing unit, the orientation of the tracking unit is controlled according to a measurement by the capturing unit. If the target can then be detected by the tracking unit, a transition to the normal tracking mode is initiated. If the target can be detected only by the surveying device, the orientation of the tracking unit is controlled according to a measurement of the surveying device. | 05-03-2012 |
| 20130286375 | HIGH PRECISE LASER RANGEFINDER - A laser rangefinder includes a scanning laser emitter emitting a narrow laser beam, a controller in communication with the scanning laser emitter and configured to control the scanning laser emitter to emit the laser beam to scan a preset range in a preset manner, a laser detector positioned adjacent to the scanning laser emitter and configured to capture an image of a spot formed by the laser beam reflected off an object; and a processor in communication with the controller and the laser detector. The processor is configured to obtain an angle that the laser beam is tilted and process the image to obtain position coordinates of the spot in the image. The processor is further configured to calculate a distance from the laser rangefinder to the object based upon the angle and the position coordinates of the spot. | 10-31-2013 |
| 20130308117 | APPARATUS AND METHOD TO COMPENSATE BEARING RUNOUT IN LASER TRACKER - An apparatus and method for correcting errors in measurement of three-dimensional coordinates of a retroreflector by a coordinate measurement device is provided. The method includes measuring a plurality of first angles, a plurality of first and second displacements along an axis, sending a beam of light to the retroreflector target, measuring two angles and a distance to the retroreflector, and determining the three-dimensional coordinates of the retroreflector. | 11-21-2013 |
| 20140340668 | APPARATUS FOR MEASURING DISTANCE - The present invention relates to an apparatus for measuring a distance, the apparatus including a light transmitter including a light source configured to emit a light, and a collimator lens configured to emit a light by converting the light emitted from the light source to a collimation light, and a light receiver including a first mirror configured to reflect the collimation light emitted from the collimator lens to an object, a lens configured to concentrate a light reflected or dispersed from the object to a spot, and a photo-detector configured to form a spot concentrated with light on the lens, wherein an optical axis of the light source matches a rotation shaft of the photo-detector, the light transmitter is fixed and the light receiver rotates about the optical axis of the light source. | 11-20-2014 |
| 20150301179 | METHOD AND DEVICE FOR DETERMINING AN ORIENTATION OF AN OBJECT - The invention relates to a method for determining a spatial orientation of an auxiliary measurement object for a laser tracker, said measurement object having reference features which provide points of light. The tracker has a base, a support which can be pivoted in a motorized manner, a pivoting unit which can be rotated about a tilting axis in a motorized manner and which comprises an image capturing unit for capturing an image of the points of light, and a beam source for emitting a laser beam. According to the method, an image is captured in the direction of the auxiliary measurement object with respective capturable points of light, and the spatial orientation of the auxiliary measurement object is derived from image positions in the image for the points of light captured in the image using an image analysis. | 10-22-2015 |
| 20150346343 | THREE-DIMENSIONAL SPACE MEASUREMENT DEVICE AND METHOD FOR OPERATING SAME - In the present disclosure, a structure of a 3-dimensional space measurement device is maximally simplified to be easily carriable by a user to measure a 3-dimensional spatial data. For simplifying the structure, a light transmission unit and a light reception unit are fixed to a support plate, and the support plate is fixed to a rotation unit. Provided are a 3-dimensional space measurement device capable of adjusting a rotation angle of the rotation unit and a tilt angle of the support plate to efficiently measure a distance and space, and a measurement method of a distance and space for making 3-dimensional spatial data. | 12-03-2015 |
| 20150369920 | ELECTRONIC APPARATUS AND METHOD FOR MEASURING DIRECTION OF OUTPUT LASER LIGHT - An electronic apparatus includes a light source that outputs a laser light; a scanning unit that scans the laser light; a reflective member having a reflective surface that reflects the laser light; a light-receiving unit that receives a first reflected light reflected by the reflective member; and a signal processing unit that calculates a distance from the light source to the reflective surface using the first reflected light and determines a direction in which the laser light is output using the distance. | 12-24-2015 |
| 20160187470 | PROBE THAT COOPERATES WITH A LASER TRACKER TO MEASURE SIX DEGREES OF FREEDOM - A system includes a measurement device configured to measure a distance, a first angle, and a second angle to a retroreflector target. The system further includes a probe having the retroreflector target, an inclinometer sensor, a camera, and a processor, the inclinometer sensor configured to determine a two-dimensional inclination of the probe relative to a gravity vector, the camera configured to capture an image of a light emitted from or reflected by the measurement device, the processor configured to determine six degrees of freedom of the probe based at least in part on the distance, the first angle, the second angle, the two-dimensional inclination, and the captured image of the camera. | 06-30-2016 |
