公开(公告)号：US20030034444A1

公开(公告)日：2003-02-20

申请号：US10060641

申请日：2002-01-29

发明人： George G. Chadwick ,  Jerry Hausner

IPC分类号： G02F001/01

CPC分类号： G01S13/887 ,  G01S7/025 ,  G01S7/412 ,  G01S2007/2883 ,  G01V3/12

摘要： Methods and apparatus for detecting objects. In one embodiment, a person entering a secured or nullSafe Zonenullnull is illuminated with low-power polarized radio waves. Differently polarized waves which are reflected back from the person are collected and measured. In a preferred embodiment, concealed weapons are detected by calculating the difference of a pair of differences (Delta A and B) of different polarized reflected energy (upper and lower curves in the two graphs) in the time domain, and by using signal processing methods and apparatus to improve the reliability of the detection process.

摘要翻译： 用于检测物体的方法和装置。 在一个实施例中，进入安全或“安全区域（TM）”的人被低功率偏振无线电波照射。 收集和测量从人体反射回来的不同偏振波。 在优选实施例中，通过计算时域中的不同偏振反射能量（两个图中的上下曲线）的差异（ΔA和B）的差异，并且通过使用信号处理方法来检测隐藏的武器 以及提高检测处理的可靠性的装置。

公开(公告)号：US20030025976A1

公开(公告)日：2003-02-06

申请号：US09920319

申请日：2001-07-31

发明人： Torsten Wipiejewski

IPC分类号： G02F001/01

CPC分类号： G02F1/0147 ,  G02F1/011 ,  G02F1/015

摘要： A tunable modulator includes an epitaxial structure formed on a substrate. The epitaxial structure includes a waveguide for light guiding, generally in form of a ridge, a trench for thermal insulation and an integrated heating element which, when a current is passed therethrough, heats the modulator and in turn changes the effective bandgap. This alters the wavelength that is best modulated resulting in a tunable modulator in accordance with the present invention.

摘要翻译： 可调谐调制器包括形成在衬底上的外延结构。 外延结构包括通常以脊形形式的导光的导波管，用于热绝缘的沟槽和集成的加热元件，当电流通过其时，加热调制器并且进而改变有效带隙。 这改变了最佳调制的波长，导致根据本发明的可调谐调制器。

公开(公告)号：US20030016429A1

公开(公告)日：2003-01-23

申请号：US10175842

申请日：2002-06-21

申请人： Canon Kabushiki Kaisha

发明人： Tsutomu Ikeda ,  Yoshinori Uno

IPC分类号： G02F001/01 ,  G02B026/00

CPC分类号： G02F1/167 ,  G02F1/134363 ,  G02F2201/123

摘要： Disclosed herein is an electrophoretic display device comprising first and second substrates arranged in opposed relation to each other with a space, an insulating liquid arranged into the space and a plurality of colored and charged electrophoretic particles dispersed in the insulating liquid, in which on the basis of arrangement of a stage along the second substrate in the space between the substrates, a first surface opposing to a thicker portion of the insulating liquid, a second surface opposing to a thinner portion of the insulating liquid and side wall of the stage, which connect the first surface to the second surface, are formed on the second substrate, a first electrode is arranged along the first surface, and a second electrode is arranged along the second surface, wherein the display device has a third electrode arranged along at least a part of the side wall of the stage and forming an electrode face continuous with the first electrode.

摘要翻译： 本发明公开了一种电泳显示装置，包括：第一和第二基板彼此相对布置，空间，布置在该空间中的绝缘液体和分散在绝缘液体中的多个着色和带电荷的电泳颗粒，其中基于 在基板之间的空间中沿着第二基板布置阶段，与绝缘液体的较厚部分相对的第一表面，与绝缘液体的较薄部分和载物台的侧壁相对的第二表面，其连接 第一表面至第二表面形成在第二基板上，第一电极沿着第一表面布置，第二电极沿着第二表面布置，其中显示装置具有沿着至少一部分排列的第三电极， 并形成与第一电极连续的电极面。

公开(公告)号：US20030015673A1

公开(公告)日：2003-01-23

申请号：US10180371

申请日：2002-06-26

申请人： NexPress Solutions LLC

发明人： Wolfgang Eberhard Luxem

IPC分类号： G02F001/01 ,  G01N021/86

CPC分类号： G01N21/21

摘要： Detecting a transparent object, in particular a web or conveyor belt of a printing press with at least one radiation source and at least one receiver arrangement for receiving rays from the radiation source, whereby the light intensity change based on the transparent object is independent of the position of the major optical axis h of the transparent object. A particular embodiment envisages two null/4 small plates, which are each attached to one of two linear polarization filters, which intersect one another.

摘要翻译： 检测具有至少一个辐射源的印刷机的透明物体，特别是带或输送带，以及用于接收来自辐射源的光线的至少一个接收器装置，由此基于透明物体的光强度变化独立于 透明物体的主光轴h的位置。 具体实施方案设想两个羔羊/ 4个小板，它们各自连接到两个彼此相交的线性偏振滤光器中的一个。

公开(公告)号：US20030011850A1

公开(公告)日：2003-01-16

申请号：US09847652

申请日：2001-05-03

发明人： Vladimir G. Sidorovich ,  Aleksei A. Leshev ,  Valery V. Ragulsky ,  Mikhail V. Vasiliev ,  Vladimir P. Vasiliev

IPC分类号： H04B010/00 ,  H04B010/12 ,  G02F001/01 ,  G02B026/00

CPC分类号： H04B10/11 ,  G02B27/48 ,  H04B10/2581

摘要： The inventive beam forming technique enables use of multimode optical fibers to couple a modulated optical beam from a radiation source to an optical emitting antenna, for free-space communications. The disclosure teaches a methodology for determining the angular and frequency spectrum parameters of the optical energy applied to the fiber as well as the parameters of the fiber so as to smooth speckle-pattern caused by multimode interference and to provide a speckle-pattern contrast at or below a maximum value at which free-space communication is most efficient.

摘要翻译： 本发明的波束形成技术使得能够使用多模光纤将来自辐射源的调制光束耦合到发光天线，用于自由空间通信。 本公开教导了一种用于确定施加到光纤的光能的角度和频谱参数以及光纤的参数的方法，以便平滑由多模干涉引起的散斑图案，并且在或在其上提供斑纹图案对比度 低于自由空间通信最有效的最大值。

公开(公告)号：US20030007231A1

公开(公告)日：2003-01-09

申请号：US10134091

申请日：2002-04-26

发明人： Peter J. Winzer

IPC分类号： G02F001/03 ,  G02F001/07 ,  G02F001/01

CPC分类号： G02F1/225

摘要： A method and apparatus for variable duty cycle generation of optical RZ data signals uses a single, NRZ-driven phase modulator followed by a optical delay-line interferometer. If desired, a differential encoder precodes an NRZ data signal before being applied to the data input of a phase modulator arranged to modulate the light emerging from a continuously operating laser. The output of the modulator is then applied to an optical delay interferometer, such that the optical signal is split into first and second optical signals, each of which is applied to a respective one of the two interferometer arms. The interferometer is arranged such that the signal in one of the arms is controllably delayed with respect to the other (a) by a fine delay (on the other of the optical wavelength) to produce destructive interference in the absence of phase modulation by said phase modulator, and (b) by a coarse delay (on the order of a bit period), to produce RZ pulses having the desired duty cycle. The optical signals in each of the arms are then recombined to form the interferometer output, which is the desired optical RZ data signal.

摘要翻译： 用于光学RZ数据信号的可变占空比生成的方法和装置使用单个NRZ驱动的相位调制器，随后是光学延迟线干涉仪。 如果需要，差分编码器在将NRZ数据信号施加到布置成调制从连续操作的激光器出射的光的相位调制器的数据输入之前进行预编码。 然后将调制器的输出施加到光学延迟干涉仪，使得光信号被分割成第一和第二光学信号，每个光信号被施加到两个干涉仪臂中的相应一个。 干涉仪被布置成使得一个臂中的信号相对于另一个臂（a）被可控地延迟（在光波长的另一个上），以在没有相位调制的所述相位产生相消干涉 调制器和（b）通过粗延迟（按位周期的顺序），以产生具有所需占空比的RZ脉冲。 然后将每个臂中的光信号重新组合以形成干涉仪输出，其是期望的光学RZ数据信号。

公开(公告)号：US20020148954A1

公开(公告)日：2002-10-17

申请号：US10118957

申请日：2002-04-10

申请人： Canon Kabushiki Kaisha

发明人： Takeaki Itsuji ,  Shunichi Shido

IPC分类号： G02F001/01

CPC分类号： G01Q60/34 ,  Y10S977/85

摘要： A signal detector comprises a frequency changing circuit adapted to receive an electric signal having a frequency modulated from a first reference frequency f1 with a modulation width nullf as input, convert the received electric signal to an electric signal having a second reference frequency f2 lower than the first reference frequency f1 and output the converted electric signal and a frequency/voltage conversion circuit adapted to receive the output of the frequency changing circuit as input and output a voltage corresponding to the ratio of the modulation width nullf to the second reference frequency f2 and an electric signal having a frequency modulated from a reference frequency Nf2 with a modulation width of Nnullf (N: integer).

摘要翻译： 信号检测器包括频率改变电路，其适于接收具有调制宽度DELTAf作为输入的第一参考频率f1的频率的电信号，将接收的电信号转换为具有低于 第一参考频率f1并输出转换的电信号，以及频率/电压转换电路，其适于接收频率改变电路的输出作为输入并输出与调制宽度DELTAf与第二参考频率f2的比率相对应的电压，以及 具有从调制宽度为NDELTAf（N：整数）的参考频率Nf2调制的频率的电信号。

公开(公告)号：US20020126367A1

公开(公告)日：2002-09-12

申请号：US09983184

申请日：2001-10-23

申请人： FUJITSU LIMITED

发明人： Hiroshi Kuwahara ,  Norio Nagase ,  Setsuo Misaizu ,  Tetsuya Kiyonaga ,  Tomoyuki Otsuka ,  Motoyoshi Sekiya

IPC分类号： G02F001/01 ,  G02B026/00

CPC分类号： H01S5/0687 ,  H01S3/1317 ,  H01S5/06804 ,  H04B10/506 ,  H04B10/572 ,  H04J14/02

摘要： The optical transmission apparatus for multiple wavelengths according to the present invention comprises; a light source, a temperature control section for controlling the temperature of the light source, a temperature control (ATC) loop for controlling the operation of the temperature control section, and a wavelength control (AFC) loop. The ATC loop detects the temperature of the light source and feedback controls the operation of the temperature control section, so that the optical output wavelengths of the light source fall within a wavelength capture range corresponding to a target wavelength of the AFC loop. The AFC loop has a wavelength detection filter having a periodic transmission wavelength characteristic. After the operation of the ATC loop has stabilized, a wavelength capture operation is commenced, and the operation of the temperature control section is controlled so that the optical output wavelength of the light source is captured at a stable point corresponding to a target wavelength, among a plurality of stable points.

公开(公告)号：US20020125411A1

公开(公告)日：2002-09-12

申请号：US10091597

申请日：2002-03-07

发明人： Orrin D. Christy

IPC分类号： G02F001/01

CPC分类号： G06K7/10831 ,  G06K7/10683 ,  G06K7/10702

摘要： We have discovered that it is possible to create a beam of light that is polarized in a linear fashion from the illuminator. This beam is directed to the bar coded labels (should not be limited to these only) at a relatively low angle of incidence. The beam is reflected toward the sensor (camera) optics. Before reaching the sensor, it passes through a second polarizing filter which blocks the transmission of the direct specular reflection from the label. The sensor only receives the information from the substrate by the diffuse reflection. The concept was developed specifically with the linerless label stock in mind. However, the present invention can be applied to linerless label sales to UPS and possibly other freight carriers, and/or to other types of labels and surfaces for optical scanning.

摘要翻译： 我们已经发现，有可能创建一个从照明器以线性方式极化的光束。 该光束以相对低的入射角被引导到条形编码标签（不应仅限于这些标签）。 光束被反射到传感器（照相机）光学器件。 在到达传感器之前，它通过阻挡来自标签的直接镜面反射的透射的第二偏振滤光器。 传感器仅通过漫反射从基板接收信息。 该概念是专门针对无衬标签原料开发的。 然而，本发明可以应用于向UPS和可能的其它货运公司和/或其他类型的用于光学扫描的标签和表面的无衬标签销售。

公开(公告)号：US20020122236A1

公开(公告)日：2002-09-05

申请号：US10045562

申请日：2002-01-10

申请人： Photogen, Inc.

发明人： Walter G. Fisher ,  Eric A. Wachter

IPC分类号： G02F001/01 ,  G02F001/23 ,  G02F002/00

CPC分类号： A61K41/008 ,  A61B5/0059 ,  A61B5/0066 ,  A61B5/0068 ,  A61B2017/00053 ,  A61B2017/00057 ,  A61B2017/00243 ,  A61B2017/00867 ,  A61K49/0017 ,  A61M25/0041 ,  A61M25/0133 ,  A61N1/056 ,  A61N5/062 ,  A61N2005/0644 ,  B23K26/0624 ,  B82Y15/00 ,  G01N21/4795

摘要： Methods and apparatus directed to using modulation to substantially improve detection limits in optical imaging, and to substantially improve the performance of various optical imaging systems. In an illustrative embodiment, such modulation is achieved using a modulated light source, a modulation frequency reference, a detector, and a demodulator. The modulated light source may comprise a light source emitting an inherently modulated output: alternately, this modulated light source may comprise a separate optical modulator and a continuous wave, modulated, or pulsed light source configured so as to impose a modulation in the output of light source. Methods for imaging using such modulation are also disclosed.

摘要翻译： 涉及使用调制以显着改善光学成像中检测限的方法和装置，并且基本上提高各种光学成像系统的性能。 在说明性实施例中，使用调制光源，调制频率参考，检测器和解调器来实现这种调制。 调制光源可以包括发射固有调制输出的光源：交替地，该调制光源可以包括单独的光调制器和被配置为在光输出中施加调制的连续波，调制或脉冲光源 资源。 还公开了使用这种调制进行成像的方法。