Class / Patent application number | Description | Number of patent applications / Date published |
356006000 | Instrument condition testing or indicating | 10 |
20080204703 | Determining A Length Of A Carrier Line Deployed Into A Well Based On An Optical Signal - A component is deployed into a well on a carrier line having an optical cable. An optical signal is transmitted into the optical cable, and a travel time of the optical signal in the optical cable is determined. A profile of a characteristic along the optical cable is determined, and a length of the carrier line deployed into the well is determined based on the determined profile and the travel time. | 08-28-2008 |
20100128249 | TEST METHOD FOR COMPOUND-EYE DISTANCE MEASURING APPARATUS, TEST APPARATUS, AND CHART USED FOR THE SAME - Provided is a test method for accurately testing all regions within a field of view and evaluating, by one-time capturing, accuracy of a distance measured by a compound-eye distance measuring apparatus having two baseline directions. | 05-27-2010 |
20120127455 | STATIONING AN UNLEVELED OPTICAL TOTAL STATION - A method of stationing an unleveled optical total station includes placing the unleveled optical total station at a first station. At the first station, positions of at least three non-collinear measurement points in an instrument coordinate system are determined using the unleveled optical total station. The method also includes obtaining positions of the at least three non-collinear measurement points in a local coordinate system. A transformation is computed between the instrument coordinate system and the local coordinate system using the positions of the at least three non-collinear measurement points in the instrument coordinate system and the positions of the at least three non-collinear measurement points in the local coordinate system. | 05-24-2012 |
20120218540 | IMAGE PROCESSING METHOD AND IMAGE PROCESSING APPARATUS - An image processing method including: measuring a distance between a medium where an image is to be recorded and an image processing apparatus which stores a relation between irradiation energy and distance previously measured; calculating an irradiation energy from the distance measured in the measuring based on the relation stored in the image processing apparatus; and irradiating and heating the medium with laser beams having the irradiation energy obtained in the calculating to record an image in the medium. | 08-30-2012 |
20120236290 | Optical Distance Measuring Device with Calibration Device - A measuring apparatus for optically measuring a distance to a target object is described. The measuring apparatus has a transmitting device for emitting periodically modulated optical measuring radiation towards the target object, a receiving device for detecting optical measuring radiation which returns from the target object, and an evaluation device for receiving and evaluating detection signals from the receiving device. The measuring apparatus also has a calibration device for calibrating the measuring apparatus, wherein the calibration device is designed to calibrate the measuring apparatus on the basis of detection of uncorrelated radiation which does not correlate with the modulated measuring radiation emitted by the transmitting device. In this case, the uncorrelated radiation may be in the form of background radiation. Alternatively, uncorrelated measuring radiation can be emitted by the transmitting device and can be detected by the receiving device. | 09-20-2012 |
20150103331 | APPARATUS AND METHOD FOR COMPENSATING FOR BEAM ANGLE OF MULTI-LAYER LiDAR - An apparatus for compensating for a beam angle of a multi-layer LiDAR includes: a beam angle calculation unit configured to calculate a distance d calculated by using ground data detected by a ground data detection unit and a beam angle of the multi-layer LiDAR by using a mounting height of the multi-layer LiDAR stored in a storage unit. When the beam angle calculated by a beam angle calculation unit is in a threshold range, a beam angle selection unit selects the calculated beam angle as the beam angle, when a beam angle compensation unit compensates for the initial beam angle by using the beam angle selected by the beam angle selection unit | 04-16-2015 |
20160025842 | SYSTEM AND METHOD FOR MONITORING OPTICAL SUBSYSTEM PERFORMANCE IN CLOUD LIDAR SYSTEMS - A method of detecting optical subsystem failures includes emitting a pulsed light beam from a laser through a window. A reflection signal indicative of a portion of the beam reflected by the window is compared to an expected signal to monitor for degradation of an optical component. | 01-28-2016 |
20160033307 | ANGLE DETECTION DEVICE AND SURVEY INSTRUMENT INCLUDING THE SAME - An angle detection device include photoemitters, photodetectors, a scale plate disposed therebetween, and a control section to control them. The control section includes an analog-front-end (AFE) to convert analog signals of the photodetectors to digital signals and an arithmetic processor to detect a rotating posture of the scale plate based on the digital signals. The control section simultaneously emits lights from the photoemitters and simultaneously receives the lights by the corresponding photodetectors. The control section then executes the following data processing for each photodetector one by one in sequence: outputting the analog signals representing an entire area of a light-receiving area of one of the photodetectors and outputting the digital signals converted by the AFE to the processor. | 02-04-2016 |
20160123764 | DISTANCE MEASURING APPARATUS - Disclosed herein is a distance measuring apparatus. The distance measuring apparatus includes a light-emitting unit configured to radiate light in a pulse form of a specific width, a light-receiving unit configured to include a plurality of cells for receiving reflected light radiated by the light-emitting unit and reflected by an object, and a processor configured to perform one or more of an operation for calculating a first distance of the object using a first method based on the locations of one or more cells which belong to the plurality of cells and on which the reflected light is focused and an operation for calculating a second distance of the object using a second method based on the time when the reflected light is reached and to correct the first distance calculated using the first method based on the second distance calculated using the second method. | 05-05-2016 |
20170237503 | Distance Measurement Method, Device and System | 08-17-2017 |