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    • 1. 发明授权
    • Differential excitation spectroscopy
    • 差分激发光谱
    • US09395311B2
    • 2016-07-19
    • US14473796
    • 2014-08-29
    • Eugene W. ButlerTimothy M. StratmanBoyd V. HunterPaul HarrisonJason M. Cox
    • Eugene W. ButlerTimothy M. StratmanBoyd V. HunterPaul HarrisonJason M. Cox
    • G01N21/27G01N22/00G01N21/35G01N21/31
    • G01N21/35G01N21/031G01N21/27G01N21/3581G01N21/636G01N22/00G01N2021/3125
    • A new technique which uses a pump-probe methodology to place a molecule into one or more excited rotational and/or vibrational states. By evaluating spectral changes due to at least one discrete frequency of pump photons a multi-dimensional characterization of the molecule's excited state energy level results. This multi-dimensional characterization typically involves evaluating the changes between excited and unexcited state measurements. The differential nature of the evaluation makes the technique self-referencing and solves problems common to many spectroscopic techniques. The multi-dimensionality of the technique provides high specificity and immunity to interferents. The preferred embodiments involve excitation by using photons suited to pumping the rotational states and evaluating the effects by probing the energy levels of one of more vibrational states. The technique is capable of detecting bulk and trace concentrations of a molecule in gas, liquid and solid phases, both in pure form and in the presence of other molecules.
    • 一种使用泵浦探针方法将分子置于一个或多个激发的旋转和/或振动状态的新技术。 通过评估由于至少一个离散频率的泵浦光子的光谱变化,可以得到分子激发态能级的多维表征。 这种多维表征通常包括评估激发态和不精确状态测量之间的变化。 评估的差异性使得技术自我参照并且解决了许多光谱技术常见的问题。 该技术的多维度为干扰物提供了高度的特异性和免疫性。 优选实施例涉及通过使用适于泵送旋转状态的光子并通过探测更多振动状态之一的能量水平来评估效果来激发。 该技术能够检测气体,液体和固相中分子的体积和痕量浓度,无论是纯形式还是在其它分子存在下。
    • 2. 发明申请
    • DIFFERENTIAL EXCITATION SPECTROSCOPY
    • 差异激发光谱
    • US20150069258A1
    • 2015-03-12
    • US14473796
    • 2014-08-29
    • Eugene W. ButlerTimothy M. StratmanBoyd V. HunterPaul HarrisonJason M. Cox
    • Eugene W. ButlerTimothy M. StratmanBoyd V. HunterPaul HarrisonJason M. Cox
    • G01N21/62G01N22/00G01N21/27
    • G01N21/35G01N21/031G01N21/27G01N21/3581G01N21/636G01N22/00G01N2021/3125
    • A new technique which uses a pump-probe methodology to place a molecule into one or more excited rotational and/or vibrational states. By evaluating spectral changes due to at least one discrete frequency of pump photons a multi-dimensional characterization of the molecule's excited state energy level results. This multi-dimensional characterization typically involves evaluating the changes between excited and unexcited state measurements. The differential nature of the evaluation makes the technique self-referencing and solves problems common to many spectroscopic techniques. The multi-dimensionality of the technique provides high specificity and immunity to interferents. The preferred embodiments involve excitation by using photons suited to pumping the rotational states and evaluating the effects by probing the energy levels of one of more vibrational states. The technique is capable of detecting bulk and trace concentrations of a molecule in gas, liquid and solid phases, both in pure form and in the presence of other molecules.
    • 一种使用泵浦探针方法将分子置于一个或多个激发的旋转和/或振动状态的新技术。 通过评估由于至少一个离散频率的泵浦光子的光谱变化,可以得到分子激发态能级的多维表征。 这种多维表征通常包括评估激发态和不精确状态测量之间的变化。 评估的差异性使得技术自我参照并且解决了许多光谱技术常见的问题。 该技术的多维度为干扰物提供了高度的特异性和免疫性。 优选实施例涉及通过使用适于泵送旋转状态的光子并通过探测更多振动状态之一的能量水平来评估效果来激发。 该技术能够检测气体,液体和固相中分子的体积和痕量浓度,无论是纯形式还是在其它分子存在下。
    • 4. 发明授权
    • Integrated bi-directional axial gradient refractive index/diffraction
grating wavelength division multiplexer
    • 集成双向轴向梯度折射率/衍射光栅波分复用器
    • US6011884A
    • 2000-01-04
    • US990197
    • 1997-12-13
    • Robert H. DueckRobert K. WadeBoyd V. HunterJoseph R. Dempewolf
    • Robert H. DueckRobert K. WadeBoyd V. HunterJoseph R. Dempewolf
    • G02B6/293G02B6/28G02B6/34G02B6/42
    • G02B6/29307G02B6/2931G02B6/2938G02B6/4246
    • A wavelength division multiplexer is provided that integrates an axial gradient refractive index element with a diffraction grating to provide efficient coupling from a plurality of input optical sources (each delivering a single wavelength to the device) which are multiplexed to a single polychromatic beam for output to a single output optical receiver. The device comprises: (a) means for accepting optical input from at least one optical source, the means including a planar surface; (b) a coupler element comprising (1) an axial gradient refractive index collimating lens having a planar entrance surface onto which the optical input is incident and (2) a homogeneous index boot lens affixed to the axial gradient refractive index collimating lens and having a planar but tilted exit surface; (c) a diffraction grating, such as a Littrow diffraction grating, on the tilted surface of the homogeneous index boot lens which combines a plurality of spatially separated wavelengths from the optical light; and (d) means to output at least one multiplexed, polychromatic output beam, the means including a planar surface. The device may be operated in the forward direction as a multiplexer or in the reverse direction as a demultiplexer.
    • 提供了一种波分复用器,其将轴向梯度折射率元件与衍射光栅集成,以从多个输入光源(每个输送单个波长到器件)提供有效的耦合,多路复用到单个多色波束以输出到 单输出光接收机。 该装置包括:(a)用于从至少一个光源接收光学输入的装置,该装置包括一个平面; (b)耦合器元件,包括(1)具有平面入射表面的轴向梯度折射率准直透镜,光输入端入射到该平面入射表面,以及(2)固定在轴向梯度折射率准直透镜上的均匀折射率引导透镜, 平面但倾斜的出口表面; (c)衍射光栅,例如Littrow衍射光栅,在均匀折射引导透镜的倾斜表面上组合多个空间上分离的波长的光; 和(d)用于输出至少一个复用的多色输出光束的装置,所述装置包括平面表面。 该装置可以作为多路复用器在正向操作,或者作为解复用器在相反方向上操作。
    • 5. 发明授权
    • Integrated bi-directional gradient refractive index wavelength division
multiplexer
    • 集成双向梯度折射率波分复用器
    • US6011885A
    • 2000-01-04
    • US990198
    • 1997-12-13
    • Joseph R. DempewolfRobert K. WadeRobert H. DueckBoyd V. HunterAlan E. Willner
    • Joseph R. DempewolfRobert K. WadeRobert H. DueckBoyd V. HunterAlan E. Willner
    • G02B6/34G02B6/32
    • G02B6/29373G02B6/2938
    • A wavelength division multiplexer integrating a dispersive element having a gradient refractive index with optical lenses to provide efficient coupling from a plurality of input optical fibers (each delivering a plurality of discrete wavelengths to the device) which are multiplexed to a single polychromatic beam for output to a single output optical fiber. The device comprises: (a) an input means for accepting a plurality of optical input beams of different wavelengths from a plurality of optical sources, the means including a planar front surface onto which the optical beams are incident; (b) a dispersive element comprising a radial (or axial) gradient refractive index for combining the plurality of optical input beams into a single optical beam and operatively associated with the planar front surface; (c) a coupler subsystem secured to the dispersive element and comprising (1) a first homogeneous index boot lens having a planar front surface onto which the single optical beam from the dispersive element is incident, (2) an axial gradient refractive index collimating lens affixed to the first homogeneous index boot lens, and (3) a planar back surface from which the single optical beam exits, operatively associated with the axial gradient refractive index collimating lens; and (d) an output means for outputting at least one multiplexed, polychromatic output beam to an optical receiver, the means including the planar back surface. The device is fully bi-directional and may be operated in the forward direction as a multiplexer and in the reverse direction as a demultiplexer.
    • 一种波分多路复用器,其将具有梯度折射率的色散元件与光学透镜集成,以从多个输入光纤(每个输送多个离散波长到器件)提供有效的耦合,这些输入光纤被多路复用到单个多色光束以输出到 单输出光纤。 该装置包括:(a)一个输入装置,用于从多个光源接收多个不同波长的光输入光束,该装置包括光束入射到其上的平面前表面; (b)分散元件,其包括径向(或轴向)梯度折射率,用于将所述多个光学输入光束组合成单个光束并且可操作地与所述平面前表面相关联; (c)固定到分散元件的耦合器子系统,包括:(1)具有平面前表面的第一均匀指数引导透镜,来自分散元件的单个光束入射到其上,(2)轴向梯度折射率准直透镜 固定到第一均匀指引引导透镜,以及(3)平面后表面,单个光束从该后表面离开,与轴向梯度折射率准直透镜可操作地相关联; 和(d)输出装置,用于将至少一个复用的多色输出光束输出到光接收器,该装置包括平面后表面。 器件是完全双向的,并且可以作为多路复用器在正向操作,并且在反向方向上作为解复用器工作。
    • 7. 发明授权
    • Method and apparatus for real time weld monitoring
    • 用于实时焊接监测的方法和装置
    • US5674415A
    • 1997-10-07
    • US589857
    • 1996-01-22
    • Keng H. LeongBoyd V. Hunter
    • Keng H. LeongBoyd V. Hunter
    • B23K26/03B23K26/04
    • B23K26/04B23K26/032B23K26/034B23K26/044
    • An improved method and apparatus are provided for real time weld monitoring. An infrared signature emitted by a hot weld surface during welding is detected and this signature is compared with an infrared signature emitted by the weld surface during steady state conditions. The result is correlated with weld penetration. The signal processing is simpler than for either UV or acoustic techniques. Changes in the weld process, such as changes in the transmitted laser beam power, quality or positioning of the laser beam, change the resulting weld surface features and temperature of the weld surface, thereby resulting in a change in the direction and amount of infrared emissions. This change in emissions is monitored by an IR sensitive detecting apparatus that is sensitive to the appropriate wavelength region for the hot weld surface.
    • 提供了一种改进的实时焊接监测方法和装置。 检测在焊接期间由热焊接表面发射的红外标记,并且在稳定状态条件下将该特征与由焊接表面发射的红外特征进行比较。 结果与焊缝穿透有关。 信号处理比UV或声学技术简单。 焊接过程的变化,例如发射的激光束功率的变化,激光束的质量或定位,改变了焊接表面的特征和焊接表面的温度,从而导致红外发射的方向和量的变化 。 这种排放变化由对于热焊接表面适当的波长区域敏感的IR敏感检测装置来监测。
    • 8. 发明授权
    • Integrated bi-directional dual axial gradient refractive
index/diffraction grating wavelength division multiplexer
    • 集成双向双轴向梯度折射率/衍射光栅波分复用器
    • US6137933A
    • 2000-10-24
    • US257045
    • 1999-02-25
    • Boyd V. HunterRobert K. WadeJoseph R. DempewolfRay T. Chen
    • Boyd V. HunterRobert K. WadeJoseph R. DempewolfRay T. Chen
    • G02B6/34
    • G02B6/29307G02B6/2931G02B6/2938
    • A wavelength division multiplexer/demultiplexer is provided that integrates axial gradient refractive index elements with a diffraction grating to provide efficient coupling from a plurality of input optical sources (each delivering a single wavelength to the device) which are multiplexed to a single polychromatic beam for output to a single output optical source. The device comprises: (a) means for accepting an optical input from at least one optical source, the means including a planar surface; (b) a first coupler element comprising (1) a first axial gradient refractive index collimating lens having a planar entrance surface onto which the optical input is incident and (2) a first homogeneous index boot lens affixed to the first collimating lens and having a planar exit surface from which optical light exits; (c) a diffraction grating formed on the planar exit surface which combines a plurality of angularly separated diffracted wavelengths from the optical light; (d) a reflecting element for reflecting the plurality of diffracted wavelengths; (e) a second coupler element comprising (1) a second homogeneous index boot lens having a planar entrance surface onto which said plurality of diffracted wavelengths is incident and (2) a second axial gradient refractive index collimating lens affixed to the second homogeneous index boot lens; and (f) means for outputting at least one multiplexed, polychromatic output beam to an optical receiver, the means including a planar back surface. The device may be operated in either the forward or the reverse direction.
    • 提供了一种波分复用器/解复用器,其将轴向梯度折射率元件与衍射光栅集成,以从多个输入光源(每个输送单个波长到器件)提供有效的耦合,多路复用到单个多色光束以用于输出 到单个输出光源。 该装置包括:(a)用于接受来自至少一个光源的光学输入的装置,所述装置包括平面; (b)第一耦合器元件,包括(1)第一轴向梯度折射率准直透镜,其具有入射光学输入端的平面入射表面,以及(2)固定到第一准直透镜的第一均匀折射引导透镜, 光出射的平面出射面; (c)形成在平面出射表面上的衍射光栅,其结合来自光学的多个角度分离的衍射波长; (d)用于反射多个衍射波长的反射元件; (e)第二耦合器元件,包括(1)具有平面入射表面的第二均匀折射引导透镜,所述多个衍射波长入射到所述入射表面上,以及(2)固定到所述第二均匀折射引导件的第二轴向梯度折射率准直透镜 镜片; 和(f)用于将至少一个复用的多色输出光束输出到光接收器的装置,该装置包括平面后表面。 该装置可以在正向或反向的方向上操作。
    • 9. 发明授权
    • Integrated bi-directional dual axial gradient refractive
index/diffraction grating wavelength division multiplexer
    • 集成双向双轴向梯度折射率/衍射光栅波分复用器
    • US5999672A
    • 1999-12-07
    • US990199
    • 1997-12-13
    • Boyd V. HunterRobert K. WadeJoseph R. DempewolfRay T. Chen
    • Boyd V. HunterRobert K. WadeJoseph R. DempewolfRay T. Chen
    • G02B6/34
    • G02B6/29307G02B6/2931G02B6/2938
    • A wavelength division multiplexer/demultiplexer is provided that integrates axial gradient refractive index elements with a diffraction grating to provide efficient coupling from a plurality of input optical sources (each delivering a single wavelength to the device) which are multiplexed to a single polychromatic beam for output to a single output optical source. The device comprises: (a) means for accepting optical input from at least one optical source, the means including a planar surface; (b) a first coupler element comprising (1) a first axial gradient refractive index collimating lens having a planar entrance surface onto which the optical input is incident and (2) a first homogeneous index boot lens affixed to the first collimating lens and having a planar exit surface from which optical light exits; (c) a diffraction grating formed on the planar exit surface which combines a plurality of angularly separated diffracted wavelengths from the optical light; (d) a reflecting element for reflecting the plurality of diffracted wavelengths; (e) a second coupler element comprising (1) a second homogeneous index boot lens having a planar entrance surface onto which said plurality of diffracted wavelengths is incident and (2) a second axial gradient refractive index collimating lens affixed to the second homogeneous index boot lens; and (f) means for outputting at least one multiplexed, polychromatic output beam to an optical receiver, the means including the planar back surface. The device may be operated in either the forward or the reverse direction.
    • 提供了一种波分复用器/解复用器,其将轴向梯度折射率元件与衍射光栅集成,以从多个输入光源(每个输送单个波长到器件)提供有效的耦合,多路复用到单个多色光束以用于输出 到单个输出光源。 该装置包括:(a)用于从至少一个光源接收光学输入的装置,该装置包括一个平面; (b)第一耦合器元件,包括(1)第一轴向梯度折射率准直透镜,其具有入射光学输入端的平面入射表面,以及(2)固定到第一准直透镜的第一均匀折射引导透镜, 光出射的平面出射面; (c)形成在平面出射表面上的衍射光栅,其结合来自光学的多个角度分离的衍射波长; (d)用于反射多个衍射波长的反射元件; (e)第二耦合器元件,包括(1)具有平面入射表面的第二均匀折射引导透镜,所述多个衍射波长入射到所述入射表面上,以及(2)固定到所述第二均匀折射引导件的第二轴向梯度折射率准直透镜 镜片; 和(f)用于将至少一个复用的多色输出光束输出到光接收器的装置,该装置包括平面后表面。 该装置可以在正向或反向的方向上操作。