中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

14 records (took 0.013 seconds)

    Multi-wavelength time-coincident optical communications system and methods thereof
    1.
    发明授权
    Multi-wavelength time-coincident optical communications system and methods thereof 有权
    多波长同步光通信系统及其方法

    公开(公告)号：US07574137B1

    公开(公告)日：2009-08-11

    申请号：US11418304

    申请日：2006-05-05

    Applicant: John Lekki ,  Quang-Viet Nguyen

    Inventor： John Lekki ,  Quang-Viet Nguyen

    IPC: H04J14/02 ,  H04B10/142

    CPC classification number: H04B10/70

    Abstract: An optical communications transmitter includes a oscillator source, producing a clock signal, a data source, producing a data signal, a modulating circuit for modulating the clock signal using the data signal to produce modulating signals, optical drivers, receiving the modulating signals and producing optical driving signals based on the modulating signals and optical emitters, producing small numbers of photons based on the optical driving signals. The small numbers of photons are time-correlated between at least two separate optical transmission wavelengths and quantum states and the small number of photons can be detected by a receiver to reform the data signal.

    Abstract translation: 光通信发射机包括振荡器源，产生时钟信号，数据源，产生数据信号，调制电路，用于使用数据信号调制时钟信号以产生调制信号，光驱动器，接收调制信号并产生光 基于调制信号和光发射器的驱动信号，基于光驱动信号产生少量的光子。 少数光子在至少两个单独的光传输波长和量子态之间是时间相关的，并且少量的光子可以由接收器检测以重新构成数据信号。

    Method and system for fiber optic determination of gas concentrations in liquid receptacles
    2.
    发明授权
    Method and system for fiber optic determination of gas concentrations in liquid receptacles 失效
    液体容器中气体浓度的光纤测定方法和系统

    公开(公告)号：US07385692B1

    公开(公告)日：2008-06-10

    申请号：US11412924

    申请日：2006-04-28

    Applicant: Quang-Viet Nguyen

    Inventor： Quang-Viet Nguyen

    IPC: G01J3/44 ,  G01N21/65

    CPC classification number: G01N21/65 ,  G01J3/02 ,  G01J3/0218 ,  G01J3/0221 ,  G01J3/0227 ,  G01J3/12 ,  G01J3/28 ,  G01J3/36 ,  G01J3/44

    Abstract: A system for determining gas compositions includes a probe, inserted into a source of gaseous material, the probe having a gas permeable sensor tip and being capable of sending and receiving light to and from the gaseous material, a sensor body, connected to the probe, situated outside of the source and a fiber bundle, connected to the sensor body and communicating light to and from the probe. The system also includes a laser source, connected to one portion of the fiber bundle and providing laser light to the fiber bundle and the probe a Raman spectrograph, connected to another portion of the fiber bundle, receiving light from the probe and filtering the received light into specific channels and a data processing unit, receiving and analyzing the received light in the specific channels and outputting concentration of specific gas species in the gaseous material based on the analyzed received light.

    Abstract translation: 用于确定气体组成的系统包括插入气态材料源的探针，所述探针具有气体可渗透的传感器末端并且能够向气体材料发射和接收光，连接到探针的传感器主体， 位于源的外部和纤维束，连接到传感器主体并将光与探头连通。 该系统还包括激光源，其连接到纤维束的一部分并向纤维束提供激光，并且探针与连接到纤维束的另一部分的拉曼光谱仪接收来自探针的光并过滤接收的光 进入特定通道和数据处理单元，接收并分析特定通道中的接收光，并基于分析的接收光输出气态物质中特定气体种类的浓度。

    Temporal laser pulse manipulation using multiple optical ring-cavities
    3.
    发明授权
    Temporal laser pulse manipulation using multiple optical ring-cavities 有权
    使用多个光学环形腔的时间激光脉冲操纵

    公开(公告)号：US07813406B1

    公开(公告)日：2010-10-12

    申请号：US11402997

    申请日：2006-04-13

    Applicant: Quang-Viet Nguyen ,  Jun Kojima

    Inventor： Quang-Viet Nguyen ,  Jun Kojima

    IPC: H01S3/082

    CPC classification number: H01S3/0057 ,  B23K26/0622

    Abstract: An optical pulse stretcher and a mathematical algorithm for the detailed calculation of its design and performance is disclosed. The optical pulse stretcher has a plurality of optical cavities, having multiple optical reflectors such that an optical path length in each of the optical cavities is different. The optical pulse stretcher also has a plurality of beam splitters, each of which intercepts a portion of an input optical beam and diverts the portion into one of the plurality of optical cavities. The input optical beam is stretched and a power of an output beam is reduced after passing through the optical pulse stretcher and the placement of the plurality of optical cavities and beam splitters is optimized through a model that takes into account optical beam divergence and alignment in the pluralities of the optical cavities. The optical pulse stretcher system can also function as a high-repetition-rate (MHz) laser pulse generator, making it suitable for use as a stroboscopic light source for high speed ballistic projectile imaging studies, or it can be used for high speed flow diagnostics using a laser light sheet with digital particle imaging velocimetry. The optical pulse stretcher system can also be implemented using fiber optic components to realize a rugged and compact optical system that is alignment free and easy to use.

    Abstract translation: 公开了一种用于详细计算其设计和性能的光脉冲展宽器和数学算法。 光脉冲展宽器具有多个光学腔，具有多个光学反射器，使得每个光腔中的光路长度不同。 光脉冲展宽器还具有多个分束器，每个分束器截取输入光束的一部分并将该部分转移到多个光腔中的一个。 输入光束被拉伸，并且在通过光脉冲拉伸器之后输出光束的功率减小，并且通过考虑了光束发散和对准的模型来优化多个光学腔和分束器的放置 多个光腔。 光脉冲担架系统还可以作为高重复频率（MHz）激光脉冲发生器，使其适合用作高速弹道射弹成像研究的频闪光源，或者可用于高速度流量诊断 使用具有数字粒子成像测速的激光灯片。 光脉冲展宽系统也可以使用光纤组件实现，实现了一个坚固且紧凑的光学系统，无需对准，易于使用。

    High-speed electromechanical shutter for imaging spectrographs
    4.
    发明授权
    High-speed electromechanical shutter for imaging spectrographs 失效
    用于成像光谱仪的高速机电快门

    公开(公告)号：US06937331B1

    公开(公告)日：2005-08-30

    申请号：US10356932

    申请日：2003-01-30

    Applicant: Quang-Viet Nguyen

    Inventor： Quang-Viet Nguyen

    IPC: G01J3/28 ,  G01J3/40 ,  G01B26/04

    CPC classification number: G01J3/2823 ,  G01J3/0232

    Abstract: The present invention presents a high-speed electromechanical shutter which has at least two rotary beam choppers that are synchronized using a phase-locked loop electronic control to reduce the duty cycle. These choppers have blade means that can comprise discs or drums, each having about 60 (+/−15) slots which are from about 0.3 to about 0.8 mm wide and about 5 to about 20 mm long (radially) which are evenly distributed through out 360°, and a third rotary chopper which is optically aligned has a small number of slots, such as for example, 1 to 10 slots which are about 1 to about 2 mm wide and about 5 to about 20 mm long (radially). Further the blade means include phase slots that allow the blade means to be phase locked using a closed loop control circuit. In addition, in a preferred embodiment, the system also has a leaf shutter. Thus the invention preferably achieves a gate width of less than about 100 microseconds, using motors that operate at 3000 to 10,000 rpm, and with a phase jitter of less than about 1.5 microseconds, and further using an aperture with more than about 75% optical transmission with a clear aperture of about 0.8 mm×10 mm. The system can be synchronized to external sources at 0 6 kHz lasers, data acquisition systems, and cameras.

    Abstract translation: 本发明提供了一种高速机电快门，其具有使用锁相环电子控制同步的至少两个旋转斩波器，以减少占空比。 这些切碎机具有可包括圆盘或滚筒的叶片装置，每个叶片或滚筒具有大约60（+/- 15）个狭槽，其宽度为大约0.3至大约0.8mm和大约5至大约20mm（径向），其均匀分布在外 并且光学对准的第三旋转斩光器具有少数狭槽，例如1至10个狭槽，其宽度为约1至约2mm，长度为约5至约20mm（径向）。 此外，刀片装置包括允许刀片装置使用闭环控制电路进行锁相的相位槽。 此外，在优选实施例中，该系统还具有一个叶片快门。 因此，本发明优选地实现小于约100微秒的栅极宽度，使用以3000至10,000rpm运行的电动机，并且具有小于约1.5微秒的相位抖动，并且还使用具有大于约75％的光传输的孔径 具有约0.8mm×10mm的透明孔径。 该系统可以与0 6 kHz激光器，数据采集系统和摄像机的外部源同步。

    Compact and rugged imaging Raman spectrograph
    7.
    发明授权
    Compact and rugged imaging Raman spectrograph 失效
    紧凑而坚固的成像拉曼光谱仪

    公开(公告)号：US07548313B2

    公开(公告)日：2009-06-16

    申请号：US11497893

    申请日：2006-08-02

    Applicant: Quang-Viet Nguyen

    Inventor： Quang-Viet Nguyen

    IPC: G01J3/28

    CPC classification number: G01J3/44 ,  B33Y80/00 ,  G01J3/02 ,  G01J3/0208 ,  G01J3/0227 ,  G01J3/0262 ,  G01J3/26

    Abstract: A compact and robust imaging Raman spectrograph has a collimating input lens assembly, a spectral filter assembly, a transmission diffraction grating, a focusing lens assembly, and a light detector. The spectral filter assembly is located between the two lenses and comprises a notch or long-pass filter optical interference filter, a plurality of optical channel plates for limiting the optical acceptance angle of the light passing the optical interference filter, and a transmission diffraction grating, all mounted in a single assembly. The spectral filter assembly permits a very high degree of elastically scattered light rejection and excellent stray-light reduction and management, while permitting a high level of optical throughput to maximize the signal of the weakly scattered Raman signal.

    Abstract translation: 紧凑且鲁棒的成像拉曼光谱仪具有准直输入透镜组件，光谱滤光器组件，透射衍射光栅，聚焦透镜组件和光检测器。 光谱滤波器组件位于两个透镜之间，并且包括凹口或长通滤波器光学干涉滤光器，用于限制通过光学干涉滤光器的光的光学接受角度的多个光学通道板，以及透射衍射光栅， 全部安装在单个组件中。 频谱滤波器组件允许非常高程度的弹性散射光抑制和优异的散射光减少和管理，同时允许高水平的光学吞吐量以使弱散射拉曼信号的信号最大化。

    Compact and rugged imaging Raman spectrograph
    8.
    发明申请
    Compact and rugged imaging Raman spectrograph 失效
    紧凑而坚固的成像拉曼光谱仪

    公开(公告)号：US20080030728A1

    公开(公告)日：2008-02-07

    申请号：US11497893

    申请日：2006-08-02

    Applicant: Quang-Viet Nguyen

    Inventor： Quang-Viet Nguyen

    IPC: G01J3/28

    CPC classification number: G01J3/44 ,  B33Y80/00 ,  G01J3/02 ,  G01J3/0208 ,  G01J3/0227 ,  G01J3/0262 ,  G01J3/26

    Abstract: A compact and robust imaging Raman spectrograph has a collimating input lens assembly, a spectral filter assembly, a transmission diffraction grating, a focusing lens assembly, and a light detector. The spectral filter assembly is located between the two lenses and comprises a notch or long-pass filter optical interference filter, a plurality of optical channel plates for limiting the optical acceptance angle of the light passing the optical interference filter, and a transmission diffraction grating, all mounted in a single assembly. The spectral filter assembly permits a very high degree of elastically scattered light rejection and excellent stray-light reduction and management, while permitting a high level of optical throughput to maximize the signal of the weakly scattered Raman signal.

    Abstract translation: 紧凑且鲁棒的成像拉曼光谱仪具有准直输入透镜组件，光谱滤光器组件，透射衍射光栅，聚焦透镜组件和光检测器。 光谱滤波器组件位于两个透镜之间，并且包括凹口或长通滤波器光学干涉滤光器，用于限制通过光学干涉滤光器的光的光学接受角度的多个光学通道板，以及透射衍射光栅， 全部安装在单个组件中。 频谱滤波器组件允许非常高程度的弹性散射光抑制和优异的散射光减少和管理，同时允许高水平的光学吞吐量以使弱散射拉曼信号的信号最大化。

Patent Agency Ranking