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    • 2. 发明授权
    • Quadrature phase shift interferometer (QPSI) decoder and method of decoding
    • 正交相移干涉仪(QPSI)解码器和解码方法
    • US07092100B2
    • 2006-08-15
    • US10782875
    • 2004-02-23
    • Jianmin WangJason L. Pressesky
    • Jianmin WangJason L. Pressesky
    • G01B9/02
    • G11B5/82G01B9/02081G01B9/02083G01B2290/45G01B2290/70
    • An arrangement and method for reliably finding the wave form extrema of interference signals produced by a quadrature phase shift interferometer (QPSI) takes advantage of the quadrature property of I and Q signals. The zero-crossing points in the I and Q signals are determined. Peak detection is performed for peaks and valleys in the Q signal in close proximity to the zero-crossing points in the I signal, and for peaks and valleys in the I signal in close proximity to the zero-crossing points in the Q signal. These represent the maximum and minimum points of the I and Q signals. From these points, intensity envelopes are created and QPSI phase wrapping is performed to determine the phase angle and ultimately, out-of-plane displacement may be determined.
    • 用于可靠地发现由正交相移干涉仪(QPSI)产生的干扰信号波形的布置和方法利用了I和Q信号的正交特性。 确定I和Q信号中的过零点。 对Q信号中的峰值和峰值进行峰值检测,其接近于I信号中的过零点,以及在靠近Q信号中的过零点的I信号中的峰值和谷值。 这些表示I和Q信号的最大和最小点。 从这些点,产生强度包络,并且执行QPSI相位缠绕以确定相位角,并且最终可以确定面外位移。
    • 3. 发明授权
    • Method and arrangement for topographically characterizing a surface of a hard disk with distortion due to disk modes removed
    • 用于由于磁盘模式被去除而导致具有变形的硬盘表面的地形学表征的方法和装置
    • US07064841B2
    • 2006-06-20
    • US10782910
    • 2004-02-23
    • Jianmin WangJason L. PresseskyHuan TangJing Gui
    • Jianmin WangJason L. PresseskyHuan TangJing Gui
    • G01B9/02
    • G01B11/303G01B9/02081G01B2290/45G01B2290/70G11B5/82
    • An arrangement and method of measuring head-media spacing modulation (HMS_Wq) removes the portion of out-of-plane motion caused by disk modes from the dynamic measurements of hard disk surface topography. Employing time-domain measurement techniques, circumferential surface topographical measurements are made for a hard disk surface. A boundary wavelength is determined, and a first partial HMS_Wq value is determined based upon measurements taken at a first disk rotational speed. A second partial HMS_Wq value is determined based upon measurements taken at a second disk rotational speed. The first and second partial HMS_Wq values are combined to provide a complete and accurate HMS_Wq value, taking advantage of the principle that the disk mode location in the spatial domain topography spectrum converted from the measured time-domain data shifts when the disk rotation speed is changed during the measurement.
    • 测量头媒体间距调制(HMS_Wq)的布置和方法从硬盘表面形貌的动态测量中消除由磁盘模式引起的面外运动的部分。 采用时域测量技术,对硬盘表面进行圆周表面形貌测量。 确定边界波长,并且基于在第一盘旋转速度下进行的测量来确定第一部分HMS_Wq值。 基于在第二盘旋转速度下进行的测量来确定第二部分HMS_Wq值。 组合第一和第二部分HMS_Wq值以提供完整和准确的HMS_Wq值,利用以下原理:当盘旋转速度改变时,从测量的时域数据转换的空间域拓扑谱中的盘模式位置移位 在测量期间。
    • 4. 发明授权
    • Dual-beam interferometer for ultra-smooth surface topographical measurements
    • 双光束干涉仪用于超光滑表面形貌测量
    • US07019840B2
    • 2006-03-28
    • US10690447
    • 2003-10-21
    • Jianmin WangJason L. PresseskyLi-Ping Wang
    • Jianmin WangJason L. PresseskyLi-Ping Wang
    • G01B9/02
    • G01B11/306G11B5/012G11B2005/001
    • A method and apparatus for using a dual-beam interferometer to test surface flatness is provided. The interferometer directs two beams focused at distinct points on a testing surface, such as the surface of a magnetic recording disc. An offset distance “d” between the two beams is provided on the target surface. In the present invention, the separation distance “d” is adjustable. The feature of adjustable separation distance in the interferometer allows the interferometer to meet the different spatial frequency requirements of various applications. In operation, first and second reflected beams are returned to an intensity beam splitter, where they are split and then recombined into two new beams of substantially equal intensity. The second of the two new light beams is constructed by the interference of half intensity of the first and half intensity of second beams, and is sent to a photodiode. The photodiode generates signals in response to the changing interference fringes caused as a result of the modulation of the optical path length difference between the original first and second beams. A local height difference on the reflective surface is calculated relative to the separation distance “d”.
    • 提供了一种使用双光束干涉仪来测试表面平坦度的方法和装置。 干涉仪引导聚焦在测试表面上的不同点的两个光束,例如磁记录盘的表面。 两个光束之间的偏移距离“d”设置在目标表面上。 在本发明中,分离距离“d”是可调节的。 干涉仪间距可调的特点使得干涉仪能够满足各种应用的不同空间频率要求。 在操作中,第一和第二反射光束被返回到强度分束器,在那里它们被分裂,然后再组合成两个基本相等强度的新光束。 两个新光束中的第二个光束由第二光束的第一和第二强度的半强度的干扰构成,并被发送到光电二极管。 光电二极管响应于原始第一和第二光束之间的光程长度差的调制而引起的干扰条纹变化而产生信号。 相对于间隔距离“d”计算反射面上的局部高度差。
    • 9. 发明授权
    • Draw-bar box type portable folding electro-tricycle with folding chair function
    • 拉杆箱型便携式折叠电动三轮车带折叠椅功能
    • US09469366B2
    • 2016-10-18
    • US14871655
    • 2015-09-30
    • Jianmin WangSumi Wang
    • Jianmin WangSumi Wang
    • B62D61/00B62K15/00B62K5/06B62K5/027B62K13/08
    • B62K15/008B62K5/027B62K5/06B62K13/08B62K15/00B62K2015/003B62K2204/00
    • A portable foldable electric tricycle that can be folded to form a trolley suitcase shape and a chair includes a folding frame connecting a front wheel assembly and handlebar assembly to a seat. The front wheel assembly includes an electric motor to drive the front wheel. A backrest and rear wheel assembly are hinge connected with the seat by oppositely disposed four bar linkages. A stand is hinge connected to the seat. The folding frame, front wheel assembly and handlebar assembly can be folded to a position within the seat and the stand folded to a position in which it supports the seat to define the chair configuration of the electric tricycle. The backrest and rear wheel assembly can be folded to non-extended positions in which they are disposed adjacent the seat to define the trolley suitcase configuration of the case.
    • 可折叠以形成手推车手提箱形状的便携式可折叠电动三轮车和椅子包括将前轮组件和车把组件连接到座椅的折叠框架。 前轮组件包括用于驱动前轮的电动马达。 靠背和后轮组件通过相对设置的四个杆连杆与座铰接连接。 支架铰链连接到座椅上。 折叠框架,前轮组件和把手组件可以折叠到座椅内的位置,并且展台折叠到其支撑座椅的位置,以限定电动三轮车的椅子构型。 靠背和后轮组件可以被折叠到非延伸位置,在该位置上它们邻近座椅设置,以限定壳体的手推车手提箱配置。
    • 10. 发明授权
    • Split laser scribe
    • 分割激光刻章
    • US08519298B2
    • 2013-08-27
    • US12731798
    • 2010-03-25
    • Jianmin WangCraig MetznerGregory W. Schuh
    • Jianmin WangCraig MetznerGregory W. Schuh
    • B23K26/00B23K26/14B23K26/02
    • B23K26/0676B23K26/40B23K2101/40B23K2103/50G02B27/283
    • A dual-beam laser cutting system uses laser beam polarization to output two identical laser beams. The dual identical laser beams are spaced appropriately to simultaneously cut a water thus increasing the laser cutting system's throughput as compared to a single-laser cutting system. In one implementation, the dual-beam laser cutting system 100 utilizes a beam expander 220, two half-wave plates 224, 238, a polarizing beam splitter 228, a mirror 236, and two lenses 234, 242 to provide two identical laser beams 202, 204 from a single laser source 214. The identical laser beams 202, 204 are tuned to have the same power, cross-sectional diameter, and polarization direction. One of the half-wave plates 224 is rotated to yield laser beams with the same power. The other half-wave plate 238 is rotated to yield laser beams with the same polarization direction.
    • 双光束激光切割系统使用激光束偏振来输出两个相同的激光束。 与单激光切割系统相比,双重相同的激光束被适当地间隔开以同时切割水,从而增加激光切割系统的吞吐量。 在一个实施方案中,双光束激光切割系统100利用光束扩展器220,两个半波片224,238,偏振分束器228,反射镜236和两个透镜234,242来提供两个相同的激光束202 ,204来自单个激光源214.相同的激光束202,204被调谐为具有相同的功率,横截面直径和偏振方向。 半波片224中的一个旋转以产生具有相同功率的激光束。 旋转另一个半波片238以产生具有相同偏振方向的激光束。