专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明申请

WO2004025324A1 COHERENT DIFFERENTIAL ABSORPTION LIDAR (DIAL) 审中-公开
标题翻译：相同的差分吸收激光（DIAL）
公开(公告)号：WO2004025324A1
公开(公告)日：2004-03-25
申请号：PCT/GB2003/003882
申请日：2003-09-08
申请人： QINETIQ LIMITED , BRYCE, David, John , HARRIS, Michael , PEARSON, Guy, Neville , WILLETTS, David, Vedmore
发明人： BRYCE, David, John , HARRIS, Michael , PEARSON, Guy, Neville , WILLETTS, David, Vedmore
IPC分类号： G01S17/88
CPC分类号： G01S7/4818 , G01N21/314 , G01N21/3504 , G01S7/487 , G01S7/497 , G01S17/87 , G01S17/88
摘要： A coherent differential absorption lidar (DIAL) device (2) comprises a transmit portion (4) for directing a combined light beam to a remote target and a receive portion (5) for receiving light returned from the remote target and for coherently mixing the received light with its associated local oscillator beam. The combined beam comprises at least two component light beams of discrete wavelengths. The device further comprises a signal correction means. The signal correction means comprising a means for extracting a portion of each component light beam from the transmit portion, a means for introducing a frequency difference (62) between each extracted component light beam and its associated local oscillator beam and a means for directing the extracted beam into the receive portion. This provides an additional correction signal thereby improving device performance.
摘要翻译：相干差分吸收激光雷达（DIAL）装置（2）包括用于将组合的光束引导到远程目标的发射部分（4）和用于接收从远程目标物返回的光并用于相干混合所接收的光的接收部分（5）光与其相关的本地振荡器光束。组合光束包括离散波长的至少两个分量光束。该装置还包括信号校正装置。信号校正装置包括用于从发送部分提取每个分量光束的一部分的装置，用于在每个提取的分量光束与其相关联的本地振荡器波束之间引入频差（62）的装置和用于引导射入接收部分。这提供了附加的校正信号，从而提高了设备性能。

2. 发明申请

WO2004053518A1 LASER RADAR APPARATUS HAVING MULTIPLE OUTPUT WAVELENGHTS 审中-公开
标题翻译：具有多个输出波长的激光雷达设备
公开(公告)号：WO2004053518A1
公开(公告)日：2004-06-24
申请号：PCT/GB2003/005215
申请日：2003-12-03
申请人： QINETIQ LIMITED , HARRIS, Michael , BRYCE, David, John , PEARSON, Guy, Neville , WILLETTS, David, Vedmore
发明人： HARRIS, Michael , BRYCE, David, John , PEARSON, Guy, Neville , WILLETTS, David, Vedmore
IPC分类号： G01S7/491
CPC分类号： G01N21/39 , G01J3/42 , G01N21/3504 , G01N2021/1793 , G01N2021/3513 , G01N2021/394 , G01N2021/395 , G01N2021/399
摘要： A coherent laser radar (lidar) device is described. The device has a transmitter portion that comprises a single wavelength laser source, a conversion means (such as an electro-optic modulator) for producing a combined light beam that comprises at least two component light beams of discrete wavelength from the output of said single wavelength laser source, and transmit optics to direct the combined light beam to a remote target. Each component light beam of the combined light beam traverses the same optical path from the single wavelength laser source to the transmit optics. The device is used to make differential absorption measurements.
摘要翻译：描述了相干激光雷达（激光雷达）装置。该装置具有包括单个波长激光源的发射器部分，用于产生组合光束的转换装置（例如电光调制器），该组合光束包括从所述单个波长的输出的离散波长的至少两个分量光束激光源和发射光学器件以将组合的光束引导到远程目标。组合光束的每个分量光束穿过从单个波长激光源到发射光学器件的相同光路。该装置用于进行差分吸收测量。

3. 发明申请

WO2005080928A1 LASER VIBROMETER 审中-公开
标题翻译：激光振荡器
公开(公告)号：WO2005080928A1
公开(公告)日：2005-09-01
申请号：PCT/GB2005/000422
申请日：2005-02-07
申请人： QINETIQ LIMITED , PEARSON, Guy, Neville , WILLETTS, David, Vedmore
发明人： PEARSON, Guy, Neville , WILLETTS, David, Vedmore
IPC分类号： G01H9/00
CPC分类号： G01H9/00
摘要： This invention relates a laser vibrometer. A frequency modulated laser source (2, 3) generates a frequency modulated output, preferably a linear ramp, which is used for both the transmit beam and the local oscillator signal. Transmit (26) and receive optics (27) transmit the transmit beam towards a target and receive radiation returned therefrom. The local oscillator is mixed with the received beam and the mixed signal detected by a detector array (28). Before mixing with the received radiation however the local oscillator is delayed for a time substantially the same as the flight time of the radiation, preferably through a variable optical delay (32). Delaying the local oscillator signal in this way means that the received radiation was generated at nearly the same time as the local oscillator signal with which it was mixed and both received the same modulation. Therefore any variations in modulation of the modulation of the source with be present in both the receive beam and local oscillator signal and will to a large extent cancel The use of a delay also means that the detected intermediate frequency has a narrow bandwidth easing signal processing requirements and also as the local oscillator signal is in near coincidence with the received beam the effects of phase noise of the source are reduced.
摘要翻译：本发明涉及一种激光振动计。频率调制激光源（2,3）产生用于发射波束和本地振荡器信号的频率调制输出，优选地是线性斜坡。发射（26）和接收光学器件（27）将发射光束朝向目标传送并接收从其返回的辐射。本地振荡器与接收的波束和由检测器阵列（28）检测的混合信号混合。在与接收的辐射混合之前，本地振荡器延迟的时间与辐射的飞行时间基本相同，优选地通过可变的光学延迟（32）。以这种方式延迟本地振荡器信号意味着接收到的辐射在与其混合的本地振荡器信号几乎相同的时间产生，并且都接收相同的调制。因此，在接收波束和本地振荡器信号中存在源的调制的任何变化，并且将在很大程度上取消使用延迟还意味着所检测的中频具有窄带宽宽松信号处理要求并且由于本地振荡器信号与接收波束几乎一致，所以源的相位噪声的影响减小。

4. 发明申请

WO2007017641A1 APPARATUS AND METHOD FOR FOCUSSING AN OPTICAL BEAM 审中-公开
标题翻译：聚焦光束的装置和方法
公开(公告)号：WO2007017641A1
公开(公告)日：2007-02-15
申请号：PCT/GB2006/002903
申请日：2006-08-04
申请人： QINETIQ LIMITED , HARRIS, Michael , WILLETTS, David, Vedmore
发明人： HARRIS, Michael , WILLETTS, David, Vedmore
IPC分类号： G01P5/26 , G01S17/95 , G01S17/58
CPC分类号： G01S17/95 , G01P5/26 , G01S7/4811 , G01S17/58 , Y02A90/19
摘要： Apparatus (62) is described for focussing an optical beam. The apparatus includes an optical transmission component, such as a waveguide (56) having a first end (54), a first lens (58) for focussing light from the optical transmission component (56) to a remote probe volume (60) and focus adjustment means (66) for setting the range (R) of said remote probe volume (60) from the apparatus (62). The first lens (58) is spaced apart from the first end (54) of the optical waveguide (56) and the focus adjustment means (66) comprises one or more optical elements (70) and means for removably inserting any of said one or more optical elements (70) into the free-space optical path between the first end (54) of the optical waveguide (56) and the first lens (58). In this manner, the focus or range (R) of the device may be set as required. A laser radar (lidar) device for wind speed measurements that incorporates the focussing apparatus (62) is also described.
摘要翻译：描述了用于聚焦光束的装置（62）。该装置包括光传输部件，例如具有第一端（54）的波导（56），用于将来自光传输部件（56）的光聚焦到远程探针体积（60）的第一透镜（58）和聚焦用于从所述设备（62）设置所述远程探测器体积（60）的范围（R）的调节装置（66）。第一透镜（58）与光波导（56）的第一端（54）间隔开，并且焦点调节装置（66）包括一个或多个光学元件（70）和用于可移除地插入任何一个或更多的光学元件（70）进入光波导（56）的第一端（54）和第一透镜（58）之间的自由空间光路中。以这种方式，可以根据需要设定装置的焦点或范围（R）。还描述了包括聚焦装置（62）的用于风速测量的激光雷达（激光雷达）装置。

5. 发明申请

WO2003063696A1 APPARATUS AND METHOD FOR DISTINGUISHING TISSUE TYPES 审中-公开
标题翻译：用于辨别组织类型的装置和方法
公开(公告)号：WO2003063696A1
公开(公告)日：2003-08-07
申请号：PCT/GB2003/000227
申请日：2003-01-21
申请人： QINETIQ LIMITED , GEDDES, Norman, James , WELFORD, Kevin, Roy , WILLETTS, David, Vedmore
发明人： GEDDES, Norman, James , WELFORD, Kevin, Roy , WILLETTS, David, Vedmore
IPC分类号： A61B5/00
CPC分类号： A61B5/0084 , A61B5/0097 , A61B5/4504 , A61B5/7203 , A61B8/0875 , A61B18/20 , A61B18/24 , A61B2017/00057 , A61B2018/00636 , A61B2090/378
摘要： Apparatus (50) for distinguishing tissue types in a region (80) internal to a human or animal body, comprises a source (52, 53) of at least partially coherent radiation, an optical fibre (55) for delivering a portion of the at least partially coherent radiation to the region and means for positioning the fibre's distal end (55A), characterised in that the apparatus further comprises means (56, 57) for imparting mechanical vibration to at least one of the tissue types, a radiation detector (74) and interfering means (61, 62, 64, 66, 68, 70, 71, 72, 73) for interfering radiation delivered by the optical fibre to the region and subsequently reflected by tissue therein with radiation from the source at the detector to generate a characteristic signal at an output thereof, the characteristic signal being characteristic of a tissue type at which the fibre's distal end is positioned. The apparatus may be comprised in endoscopic laser ablation apparatus.
摘要翻译：用于区分人或动物体内部的区域80中的组织类型的装置50包括至少部分相干辐射的源52,53，用于将至少部分相干辐射的一部分传送到该区域的光纤55，以及用于定位纤维的远端55A的装置，其特征在于，该装置还包括用于向组织类型中的至少一种施加机械振动的装置56,57，辐射检测器74和干涉装置61,62,64,66,68， 70,61,72,73，用于由光纤传送到该区域的干涉辐射，随后由其中的组织在其中用来自源的源的检测器的辐射反射，以在其输出处产生特征信号，特征信号是组织的特征类型，纤维的远端位于该位置。该装置可以包括在内窥镜激光消融装置中。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式