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公开(公告)号：US10018485B2
公开(公告)日：2018-07-10
申请号：US15415913
申请日：2017-01-26
发明人： Stefan Funk , Peter Speckbacher
CPC分类号： G01D5/264 , G01D5/266 , G01D5/30 , G01D5/38 , G02B5/1861
摘要： A scale for an optically scanning position-measuring device includes a carrier and a reflective layer disposed on the carrier. A transparent spacer layer is disposed on the reflective layer. The spacer layer has a patterned, partially transparent layer thereon which defines a bright/dark pattern in which regions having the partially transparent layer appear dark and regions without the partially transparent layer appear bright. A sealing layer is disposed on the patterned, partially transparent layer. Products of refractive index and layer thickness are the same for the spacer layer and the sealing layer, or differ by an odd multiple.
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公开(公告)号：US10018036B2
公开(公告)日：2018-07-10
申请号：US15325063
申请日：2014-07-30
CPC分类号： E21B47/123 , E21B47/06 , G01D5/266 , G01D5/268 , G01D5/35358 , G01D5/35361 , G01V1/226 , G01V1/40 , G01V2210/1234 , G01V2210/1429 , G08C23/04
摘要： A system includes an optical fiber and an interrogator to provide source light to the optical fiber. The system also includes a receiver coupled to the optical fiber. The receiver includes at least one fiber optic coupler that receives backscattered light and that produces optical interferometry signals from the backscattered light. The receiver also includes photo-detectors that produce an electrical signal for each of said optical interferometry signals. The system also includes at least one digitizer that digitizes the electrical signals. The system also includes at least one processing unit that calculates I/Q data from the digitized electrical signals, corrects the I/Q data based on ellipse fitting, determines phase values based on the corrected I/Q data, and determines distributed sensing parameter values based on the phase values.
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公开(公告)号：US20180100798A1
公开(公告)日：2018-04-12
申请号：US15565161
申请日：2016-04-08
发明人： OFER DU-NOUR
CPC分类号： G01N21/4788 , A61B5/7257 , G01D5/266 , G01N21/45 , G01N21/4738 , G01N2021/458 , G01N2021/4726 , G01N2021/4797 , G01N2201/0446 , G02B21/06 , G02B21/362
摘要： Systems for the monitoring of bacterial levels in samples, using spectral analysis of the light diffracted from a substrate with an ordered array of pores having diameters enabling the targets to enter them. The trapping pore array is cyclically illuminated by light of different wavelengths, and the light diffracted from the pore array is imaged by a 2-dimensional detector array, with one pixel, or a small group of pixels receiving light from each associated pore. The temporal sequence of frames provides a series of images, each from the reflection of a different wavelength. A time sequenced readout of the signal from the pixel or pixels associated with each pore region, provides a spectral plot of the reflected light from that pore region. Spectral analysis of the light intensity from this series of different wavelength enables the effective optical thickness (EOT) of each pore to be extracted.
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公开(公告)号：US09846060B2
公开(公告)日：2017-12-19
申请号：US14780552
申请日：2013-03-28
发明人： Helmut Heidrich , Peter Lützow , Daniel Pergande
CPC分类号： G01D5/266 , G01N21/7746 , G02B6/12007 , G02B6/29343
摘要： An optical sensor arrangement for measuring an observable, the arrangement including an optical resonance circuit including at least a first and a second optical resonator, each of the optical resonators including an entry port for coupling light into the optical resonator and a drop port for decoupling light from the optical resonator. The first and second resonator are configured such that only a portion of the first and second resonator detects the presence of the observable, a size of the portion of the first resonator being different from a size of the portion of the second resonator. The optical resonance circuit further configured to be coupled to a light generation circuit and to a detector unit for detecting light.
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公开(公告)号：US20170322498A1
公开(公告)日：2017-11-09
申请号：US15659778
申请日：2017-07-26
申请人： NIKON CORPORATION
发明人： Yuichi SHIBAZAKI
CPC分类号： G03F7/70725 , G01B11/27 , G01D5/26 , G01D5/266 , G01D18/002 , G03F7/70141 , G03F7/70341 , G03F7/70483 , G03F7/70516 , G03F7/70716 , G03F7/70775 , G03F7/7085 , G03F7/70975
摘要： Positional information of a movable body in a Y-axis direction is measured using an interferometer and an encoder whose short-term stability of measurement values excels when compared with the interferometer, and based on the measurement results, a predetermined calibration operation for obtaining correction information for correcting measurement values of the encoder is performed. Accordingly, by using measurement values of the interferometer, correction information for correcting the measurement values of the encoder whose short-term stability of the measurement values excels the interferometer is obtained. Then, based on the measurement values of the encoder and the correction information, the movable body is driven in the Y-axis direction with good precision.
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公开(公告)号：US09638514B2
公开(公告)日：2017-05-02
申请号：US14975880
申请日：2015-12-21
发明人： Walter Huber
CPC分类号： G01B11/14 , G01B11/002 , G01D5/266
摘要： An optical position-measuring device senses a relative position of two objects. A reflection material measure is connected to one object and a scanning unit is connected to the other object. A beam is split into three sub-beams in a first splitting plane by a first splitting element. The first and third sub-beams are deflected toward the reflection material measure by the deflecting elements, while the second sub-beam is split into fourth and fifth sub-beams by a second splitting element. The first and fourth sub-beams propagate as a first pair of superimposed sub-beams and the third and fifth sub-beams propagate as a second pair of superimposed sub-beams. The first and second pairs of superimposed sub-beams, after being reflected by the reflection material measure, propagate respectively toward detectors, where the sub-beams in each pair are brought into interfering superposition, so that the detectors detect displacement-dependent scanning signals.
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7.发明申请公开(公告)号：US20170082422A1
公开(公告)日：2017-03-23
申请号：US15370767
申请日：2016-12-06
发明人： CARL M. EDWARDS
CPC分类号： G01B9/02067 , E21B47/011 , E21B49/00 , G01B9/02052 , G01B9/02075 , G01B2290/25 , G01D5/266 , G01D5/34 , G01V11/00
摘要： Methods, systems and devices for estimating a parameter of interest in a borehole. The method may include generating information from an optical displacement device relating to relative motion between two or more reflective surfaces thereof that is indicative of the parameter of interest; and preventing changes in the information resulting from changes at the optical displacement device in at least one of i) temperature, or ii) pressure, by compensating for the changes. Compensating may include adjusting at least one light source generating an electromagnetic beam at least partly received by the optical displacement device responsive to information relating to a control optical displacement device at the optical displacement device. Compensating may include using an optical displacement device and configuring the optical displacement device such that a difference between a first variable gap and a second variable gap is substantially zero while the apparatus is subject to nominal conditions.
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公开(公告)号：US20160349086A1
公开(公告)日：2016-12-01
申请号：US14723929
申请日：2015-05-28
申请人： The Boeing Company
IPC分类号： G01D5/353
CPC分类号： G01D5/266
摘要： A precision optical encoder that utilizes interferometric measurements of displacement to provide angle measurements using a laser which is injection locked to a reference laser having a secondary optical frequency which has been verified with respect to a primary optical frequency standard. The encoder shape encodes distance to rotation angle. By utilizing a laser source locked to a reference laser having a standardized (i.e., verified) secondary optical frequency for fundamental measurements of the encoder surface and real-time interferometer measurements, the encoder reports rotation angle measurements that are directly traceable to a primary optical frequency standard through the injected secondary optical frequency.
摘要翻译： 一种精密光学编码器，其使用位移的干涉测量来提供角度测量，该激光被注入锁定到具有相对于初级光学频率标准已经验证的次级光频率的参考激光器。 编码器形状编码到旋转角度的距离。 通过利用锁定到具有用于编码器表面的基本测量和实时干涉仪测量的标准化（即经验证的）次级光频率的参考激光器的激光源，编码器报告可直接追溯到初级光频率的旋转角度测量 标准通过注入次级光频率。
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公开(公告)号：US20160265947A1
公开(公告)日：2016-09-15
申请号：US15157570
申请日：2016-05-18
发明人： Toru SHIMIZU
IPC分类号： G01D5/26
CPC分类号： G01D5/266 , G01D5/24485 , G01D5/30
摘要： An angle measuring system including: a rotary encoder including an encoder main body and a rotating shaft which is freely rotatable with respect to the encoder main body, the rotary encoder which detects a relative rotation angle of the rotating shaft with respect to the encoder main body; a regulation member which regulates an absolute rotation angle of the encoder main body about the rotating shaft within a fixed range; an absolute angle detecting device which detects the absolute rotation angle of the encoder main body about the rotating shaft concurrently with detection of the relative rotation angle by the rotary encoder; and a correction device which corrects the rotation angle detected by the rotary encoder based on the rotation angle detected by the absolute angle detecting device.
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10.发明授权Position-measuring device and system having a plurality of position-measuring devices 有权位置测量装置和系统具有多个位置测量装置公开(公告)号：US09200893B2
公开(公告)日：2015-12-01
申请号：US13757533
申请日：2013-02-01
发明人： Wolfgang Holzapfel , Joerg Drescher , Markus Meissner , Ralph Joerger , Bernhard Musch , Thomas Kaelberer
摘要： In position-measuring devices and a systems having a plurality of position-measuring devices for determining the position of an object in several spatial degrees of freedom, the plurality of optical position-measuring devices scan the object from a single probing direction, and the probing direction coincides with one of the two main axes of motion.
摘要翻译： 在位置测量装置和具有多个位置测量装置的系统中，用于以几个空间自由度确定物体的位置，多个光学位置测量装置从单个探测方向扫描物体，探测 方向与两个主轴运动方向一致。
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