| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 356400020 | Of a simulation or test | 8 |
| 20100085556 | UNIVERSAL LASER RANGE EVALUATION AND VERIFICATION SYSTEM - A test station for testing a laser range finder is disclosed. The test station may be a mobile test station. The test station may include an optical system having a first portion which aligns an eyepiece of the test station to the laser range finder, a second portion which aligns the eyepiece to a first range target spaced apart from the test station, and a third portion which aligns the laser range finder to the first range target. | 04-08-2010 |
| 20100245800 | Method and System for Determination of Detection Probability of a Target Object Based on Vibration - A simulation system for predicting a likelihood of whether a target object positioned in an environment will be detected by a detection system when illuminated by a laser source. The simulation system may be used for a laser rangefinder application and a laser designator application. The simulation system may provide a detection probability of the target object at a specified range to the detection system or a plurality of detection probabilities as a function of the range to the detection system. The simulation system may provide an indication of an overlap of the beam provided by the laser source on the target object. The simulation system may determine the effect of vibration on the detection of the target object at a specified range. | 09-30-2010 |
| 20100328643 | MULTIPLE MIRROR CALIBRATION SYSTEM - An optical system including a plurality of selectably directable mirrors ( | 12-30-2010 |
| 20110069299 | 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. | 03-24-2011 |
| 20120013887 | METHOD AND SYSTEM FOR MULTI-PHASE DYNAMIC CALIBRATION OF THREE-DIMENSIONAL (3D) SENSORS IN A TIME-OF-FLIGHT SYSTEM - A phase-based TOF system preferably generates an optical waveform with fast rise and fall times, to enhance modulation contrast, notwithstanding there will be many high order harmonics. The system is preferably operated with an odd number of phases, to reduce system bias error due to the higher order harmonics, while maintaining good modulation contrast, without unduly increasing system memory requirements. Preferably the system can dynamically calibrate (and compensate for) higher order harmonics in the TOF generated optical energy waveform, over time and temperature. Within the optical energy transmission channel, or within the optical energy detection channel, detection amplifier gain may be modified, and/or detector signal integration time may be varied, and/or digital values may be employed to implement calibration and error reduction The resultant TOF system can operate with improved phase-vs-distance characteristics, with reduced calibration requirements. | 01-19-2012 |
| 20120194798 | ACCURACY OF A LASER RANGEFINDER RECEIVER - A technique for providing range correction values in a laser rangefinder range processor uses return pulse width (rather than return pulse amplitude) for correcting amplitude (range walk) and speed of light problems. A plurality of range correction values may be generated in a test setup (by simulating return pulse delays) and stored in a lookup table based on return pulse width, nominal range (time of return), and other factors such as temperature and pressure. The technique is also capable of correcting other problems such as receiver delay. The technique allows for the use of a saturating preamplifier with the increased sensitivity that it offers, and is relatively simple to implement, as it may be embedded within a digital processor (DSP) or gate array that is normally present for a basic range counter implementation. | 08-02-2012 |
| 20140049765 | System and Method for Field Calibrating Video and Lidar Subsystems Using Facial Features - A system uses range and Doppler velocity measurements from a lidar subsystem and images from a video subsystem to estimate a six degree-of-freedom trajectory of a target. The video subsystem and the lidar subsystem may be aligned with one another by mapping the measurements of various facial features obtained by each of the subsystems to one another. | 02-20-2014 |
| 20160061941 | CALIBRATION CIRCUITRY AND METHOD FOR A TIME OF FLIGHT IMAGING SYSTEM - A time of flight imaging system includes a light source coupled to emit light pulses to an object in response a light source modulation signal generated in response to a reference modulation signal. Each pixel cell of a time of flight pixel cell array is coupled to sense light pulses reflected from the object in response a pixel modulation signal. A programmable pixel delay line circuit is coupled to generate the pixel modulation signal with a variable pixel delay programmed in response to a pixel programming signal. A control circuit is coupled to receive pixel information from the time of flight pixel array representative of the sensed reflected light pulses. The control circuit is coupled to vary the pixel programming signal during a calibration mode to synchronize the light pulses emitted from the light source with the pulses of the pixel modulation signal. | 03-03-2016 |
