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1. 发明申请

WO1993013427A1 DIGITAL SAMPLING OF INDIVIDUAL PULSES 审中-公开
标题翻译：个人脉搏数字采样
公开(公告)号：WO1993013427A1
公开(公告)日：1993-07-08
申请号：PCT/GB1992002318
申请日：1992-12-14
申请人： THE SECRETARY OF STATE FOR DEFENCE IN HER ... , LEWIS, Meirion
发明人： THE SECRETARY OF STATE FOR DEFENCE IN HER ...
IPC分类号： G01R13/34
CPC分类号： G01R13/347
摘要： A device and a process for enabling an incident wide bandwidth (greater than about 1GHz) short duration (less than about 10 microseconds) individual pulse of electromagnetic radiation to be digitally sampled at a sampling rate that is achievable by available digital sampling circuits. The incident pulse is modulated onto an optical signal to form a modulated optical signal and the whole, or successive or randomly selected parts, of the modulated optical signal are replicated using optical time delay means. The resulting plurality of modulated optical signal representations of the whole or parts of the incident pulse can then be digitally sampled at a sampling rate which is reduced in proportion to the number of replications to obtain a complete digital representation of the incident pulse.
摘要翻译：一种用于使得能够以可用数字采样电路可实现的采样速率数字采样的电磁辐射的单个脉冲的入射宽带宽（大于约1GHz）的短持续时间（大于约1微秒）的装置和处理。将入射脉冲调制到光信号上以形成调制的光信号，并且使用光时延装置复制调制光信号的整个或连续或随机选择的部分。然后可以以与复制次数成比例地减小以获得入射脉冲的完整数字表示的采样率数字采样所得到的入射脉冲的全部或部分的调制光信号表示。

2. 发明申请

WO1991010121A1 OPTICAL TIME DOMAIN RELFECTOMETER 审中-公开
标题翻译：光时域解耦器
公开(公告)号：WO1991010121A1
公开(公告)日：1991-07-11
申请号：PCT/GB1990002007
申请日：1990-12-21
申请人： THE SECRETARY OF STATE FOR DEFENCE IN HER ... , LEWIS, Meirion, Francis
发明人： THE SECRETARY OF STATE FOR DEFENCE IN HER ...
IPC分类号： G01M11/00
CPC分类号： G01M11/3172
摘要： An optical time domain reflectometer incorporates a pulse expander (16) arranged to frequency disperse short duration pulses (14) from a pulse generator (12). The pulse expander (16) is a surface acoustic wave (SAW) filter. The frequency dispersed pulses (18) have long duration, and when amplified are employed to modulate the optical output of a laser diode (24). The optical output is fed to an optical fibre (32) for conventional time domain reflectometry measurements, and return signals are detected conventionally. The detected signals are transformed to short pulses (52) by a second SAW filter arranged as a pulse compressor (36).
摘要翻译：光学时域反射计包括布置成从脉冲发生器（12）频率分散短持续时间脉冲（14）的脉冲扩展器（16）。脉冲扩展器（16）是表面声波（SAW）滤波器。频率分散脉冲（18）具有长的持续时间，并且当被放大以调制激光二极管（24）的光输出时。光输出被馈送到用于常规时域反射测量的光纤（32），并且传统地检测返回信号。通过布置为脉冲压缩机（36）的第二SAW滤波器将检测到的信号变换成短脉冲（52）。

3. 发明申请

WO2006043057A2 OPTICAL CORRELATION APPARATUS AND METHOD 审中-公开
标题翻译：光学相关装置和方法
公开(公告)号：WO2006043057A2
公开(公告)日：2006-04-27
申请号：PCT/GB2005/004028
申请日：2005-10-18
申请人： QINETIQ LIMITED , WILSON, Rebecca, Anne , LEWIS, Meirion, Francis , LEWIN, Andrew, Charles
发明人： WILSON, Rebecca, Anne , LEWIS, Meirion, Francis , LEWIN, Andrew, Charles
IPC分类号： G06K9/74
CPC分类号： G06E3/00 , G06K9/745
摘要： This invention relates to a pattern recognition correlator and method for correlating input data with one or more reference data sets. The input data, which may be for instance digital amplitude modulated optical data, is used to modulate an optical signal to form a phase modulated optical signal. This temporal phase modulated optical signal is then converted into a parallel optical phase signal, preferably through use of an optical delay, and modulated by an optical phase modulator. When there is a correlation between the input data and the reference data the emerging wavefront is plane and can be strongly coupled to a detector. In the absence of correlation the emergent wavefront is not plane and so is not coupled as strongly to the detector. The detector output can therefore be used as an indication of correlation.
摘要翻译：本发明涉及用于将输入数据与一个或多个参考数据集相关联的模式识别相关器和方法。输入数据可以是例如数字幅度调制光学数据，用于调制光学信号以形成相位调制光学信号。然后，该时间相位调制光信号优选地通过使用光延迟而被转换为并行光相位信号，并且由光相位调制器进行调制。当输入数据和参考数据之间存在相关性时，出现的波前是平面的并且可以强烈地耦合到检测器。在没有相关性的情况下，出现的波前不是平面的，因此不与检测器强耦合。因此检测器输出可用作相关性的指示。

4. 发明申请

WO1994027181A1 SPATIAL LIGHT MODULATORS 审中-公开
标题翻译：空调灯调制器
公开(公告)号：WO1994027181A1
公开(公告)日：1994-11-24
申请号：PCT/GB1994000872
申请日：1994-04-25
申请人： THE SECRETARY OF STATE FOR DEFENCE , LEWIS, Meirion, Francis , WILSON, Rebecca, Anne
发明人： THE SECRETARY OF STATE FOR DEFENCE
IPC分类号： G02F01/1335
CPC分类号： G02F1/133621 , G02F1/133526 , G02F2203/12
摘要： The performance of spatial light modulators (SLM) is improved by use of lenslets associated with each pixel of the SLM. The invention comprises an SLM (50) having an array of pixels (53), each pixel having associated therewith one or more lenslet (54) in an array (55) of lenslets. In some application a pinhole aperture (94) and/or a second lenslet array is additionally associated with each pixel. Various devices are provided, e.g. improved contrast SLMs, mono and multicolour displays, improved switching speed matrix vector multipliers.
摘要翻译：通过使用与SLM的每个像素相关联的小透镜来改善空间光调制器（SLM）的性能。本发明包括具有像素阵列（53）的SLM（50），每个像素具有与小透镜的阵列（55）中的一个或多个小透镜（54）相关联。在一些应用中，针孔（94）和/或第二小透镜阵列另外与每个像素相关联。提供各种装置，例如改进的对比SLM，单色和多色显示，改进的切换速度矩阵向量乘法器。

5. 发明申请

WO1994001973A1 COLOUR DISPLAY DEVICE 审中-公开
标题翻译：彩色显示设备
公开(公告)号：WO1994001973A1
公开(公告)日：1994-01-20
申请号：PCT/GB1993001290
申请日：1993-06-16
申请人： THE SECRETARY OF STATE FOR DEFENCE IN HER ... , LEWIS, Meirion, Francis
发明人： THE SECRETARY OF STATE FOR DEFENCE IN HER ...
IPC分类号： H04N09/31
CPC分类号： H04N9/3105
摘要： A colour display device (10) incorporates three light sources (12) supplying red, green and blue light respectively. A spatial light modulator (20) is positioned to provide time varying selective blocking of light from the sources (12) under television signal control. Light passes from the sources (12) to a condenser lens (16), then through a liquid crystal display element (22) and a projection lens (18) before reaching a screen (30). The display element (22) is also under television signal control. Signals supplied to the display element (22) provide for successive sets of three frames to be displayed, each set incorporating frame information to be displayed as red, green and blue and combinable to form a coloured frame. When the element (22) displays a frame corresponding to one of the three colours red, green and blue, the modulator (20) transmits that colour and blocks the others. The screen (30) receives a colour image in which red, green and blue are displayed successively for each frame.
摘要翻译：彩色显示装置（10）包括分别提供红色，绿色和蓝色光的三个光源（12）。定位空间光调制器（20）以在电视信号控制下提供来自源（12）的光的时变选择性阻挡。光从源（12）通过聚光透镜（16），然后在到达屏幕（30）之前通过液晶显示元件（22）和投影透镜（18）。显示元件（22）也在电视信号控制下。提供给显示元件（22）的信号提供要显示的三个帧的连续组，每个组合包含要被显示为红色，绿色和蓝色的帧信息，并且可组合以形成彩色帧。当元件（22）显示与红色，绿色和蓝色三种颜色之一相对应的帧时，调制器（20）发送该颜色并阻止其它颜色。屏幕（30）接收每个帧连续地显示红，绿和蓝的彩色图像。

6. 发明申请

WO1989004988A1 ELECTRO-OPTIC WAVEGUIDE DEVICE 审中-公开
标题翻译：电光波导装置
公开(公告)号：WO1989004988A1
公开(公告)日：1989-06-01
申请号：PCT/GB1988000928
申请日：1988-10-31
申请人： THE SECRETARY OF STATE FOR DEFENCE IN HER ... , HEATON, John, Michael , WIGHT, David, Robert , LEWIS, Meirion, Francis , WEST, Christopher, Lawrence
发明人： THE SECRETARY OF STATE FOR DEFENCE IN HER ...
IPC分类号： G02F01/015
CPC分类号： G02F1/025 , G02F1/295 , G02F2001/0154
摘要： An electro-optic waveguide device (10) comprises an assembly of waveguides (30) connected to a common light input region (41) and forming a common far field diffraction pattern (44). The device (10) comprises an n GaAs substrate (14) bearing a waveguide lower cladding layer (16) of n Ga0.9Al0.1As, which is in turn surmounted by a waveguide core layer (18) of n GaAs. The layer (18) has grooves (20) defining the waveguides (30), each of which has a respective Schottky contact (32). Each contact (32) is biased negative with respect to the substrate (14), which reverse biases the respective Schottky diode waveguide structure. The waveguide core layer (18) has electro-optic properties, and its refractive index varies with electric field. The phase of light emerging from each waveguide is therefore independently variable by means of its applied bias voltage. The waveguides (30) are arranged to provide output confined very largely to lowest order spatial modes, so that they produce a single far field diffraction pattern (44). Varying the set of bias voltages applied to the waveguides (30) produces output phase variation which changes the position of the diffraction pattern principal maximum (46) to produce beam steering.
摘要翻译：电光波导装置（10）包括连接到公共光输入区域（41）并形成公共远场衍射图案（44）的波导组件（30）。器件（10）包括带有n + Ga 0. Al 0.1 As的波导下包层（16）的n + GaAs衬底（14），所述波导下包层（16）反过来被波导芯层（18）覆盖 n - GaAs。层（18）具有限定波导（30）的凹槽（20），每个波导具有相应的肖特基接触（32）。每个触点（32）相对于衬底（14）偏置为负，这反向偏置相应的肖特基二极管波导结构。波导芯层（18）具有电光性质，其折射率随电场而变化。因此，从每个波导出射的光的相位可以通过其施加的偏置电压独立地变化。波导（30）被布置成提供非常大地限制在最低阶空间模式的输出，使得它们产生单个远场衍射图案（44）。改变施加到波导（30）的偏置电压的集合产生输出相位变化，其改变衍射图案主要最大值（46）的位置以产生波束转向。

7. 发明申请

WO1982001790A1 IMPROVEMENTS IN OR RELATING TO METHODS OF PRODUCING DEVICES COMPRISING METALLISED REGIONS ON DIELECTRIC SUBSTRATES 审中-公开
标题翻译：或涉及生产包含金属化区域的器件的方法在电介质基板上的改进
公开(公告)号：WO1982001790A1
公开(公告)日：1982-05-27
申请号：PCT/GB1981000222
申请日：1981-10-12
申请人： NAT RES DEV CORP , LEWIS MEIRION F
发明人： NAT RES DEV CORP
IPC分类号： H01L41/22
CPC分类号： H01L41/29 , H03H9/02921 , Y10T29/42
摘要： In devices comprising closely spaced metallised regions deposited upon a dielectric substrate, in particular acoustic wave devices, electric fields may arise between the regions due to pyroelectric effects or acquired static charges during production or subsequently. These fields can cause damage by arcing or cracking of the substrate. The present method overcomes this problem by providing resistive links between such regions so that the fields do not arise. Preferably the links are of metallising formed simultaneously with the metallised regions. Application to a SAW convolver is described in which the links are strips of metallising (7, 8, 9).
摘要翻译：在包括沉积在电介质基板上的紧密间隔的金属化区域的器件中，特别是声波器件中，由于在生产期间或之后的热电效应或获得的静电荷，区域之间可能会产生电场。这些场可能导致基板的电弧或破裂的损坏。本方法通过在这些区域之间提供电阻链接来克服这个问题，使得不会出现这些场。优选地，连接件与金属化区域同时形成金属化。描述了应用于SAW卷积器，其中链节是金属化带（7,8,9）。

8. 发明申请

WO2006043057A3 OPTICAL CORRELATION APPARATUS AND METHOD 审中-公开
标题翻译：光学相关设备和方法
公开(公告)号：WO2006043057A3
公开(公告)日：2006-08-31
申请号：PCT/GB2005004028
申请日：2005-10-18
申请人： QINETIQ LTD , WILSON REBECCA ANNE , LEWIS MEIRION FRANCIS , LEWIN ANDREW CHARLES
发明人： WILSON REBECCA ANNE , LEWIS MEIRION FRANCIS , LEWIN ANDREW CHARLES
IPC分类号： G06K9/74 , G06E3/00
CPC分类号： G06E3/00 , G06K9/745
摘要： This invention relates to a pattern recognition correlator and method for correlating input data with one or more reference data sets. The input data, which may be for instance digital amplitude modulated optical data, is used to modulate an optical signal to form a phase modulated optical signal. This temporal phase modulated optical signal is then converted into a parallel optical phase signal, preferably through use of an optical delay, and modulated by an optical phase modulator. When there is a correlation between the input data and the reference data the emerging wavefront is plane and can be strongly coupled to a detector. In the absence of correlation the emergent wavefront is not plane and so is not coupled as strongly to the detector. The detector output can therefore be used as an indication of correlation.
摘要翻译：本发明涉及一种用于将输入数据与一个或多个参考数据集进行相关的模式识别相关器和方法。可以使用输入数据（例如数字幅度调制光学数据）来调制光信号以形成相位调制的光信号。该时间相位调制光信号然后被优选地通过使用光学延迟并被光相位调制器调制成并行的光相位信号。当输入数据和参考数据之间存在相关性时，出现的波前是平面的并且可以强耦合到检测器。在没有相关性的情况下，出现的波前不是平面的，因此不像检测器那样强烈耦合。因此，检测器输出可以用作相关指示。

9. 发明申请

WO1997019504A1 FREQUENCY SYNTHESIZER 审中-公开
标题翻译：频率合成器
公开(公告)号：WO1997019504A1
公开(公告)日：1997-05-29
申请号：PCT/GB1996002761
申请日：1996-11-13
申请人： THE SECRETARY OF STATE FOR DEFENCE , ETEM, Yvonne , LEWIS, Meirion, Francis
发明人： THE SECRETARY OF STATE FOR DEFENCE
IPC分类号： H01S03/23
CPC分类号： H01S3/2383 , G02F2/002 , H01S3/13 , H01S5/0623 , H01S5/40
摘要： A frequency synthesizer (300) includes an optical delay line (322) for delaying one optical signal from a coupler (308) relative to a second optical signal. The optical signals are obtained by mixing radiation from two lasers (304, 306) in the coupler (308). By measuring the phase difference between the resulting modulated optical signals, a negative feedback signal is obtained. This feedback signal is used to control the beat frequency of the lasers and in turn to stabilise the output frequency of the synthesizer.
摘要翻译：频率合成器（300）包括用于相对于第二光信号延迟耦合器（308）的一个光信号的光延迟线（322）。通过将来自两个激光器（304,306）的辐射混合在耦合器（308）中来获得光信号。通过测量得到的调制光信号之间的相位差，获得负反馈信号。该反馈信号用于控制激光器的拍频，进而稳定合成器的输出频率。

10. 发明申请

WO1994016294A1 NANOMETER METROLOGY 审中-公开
标题翻译：纳米计量学
公开(公告)号：WO1994016294A1
公开(公告)日：1994-07-21
申请号：PCT/GB1994000039
申请日：1994-01-10
申请人： THE SECRETARY OF STATE FOR DEFENCE IN HER BRITANNIC MAJESTY'S GOVERNMENT OF THE UNITED KINGDOM OF GREAT BRITAIN AND NORTHERN IRELAND , LEWIS, Meirion, Francis
发明人： THE SECRETARY OF STATE FOR DEFENCE IN HER BRITANNIC MAJESTY'S GOVERNMENT OF THE UNITED KINGDOM OF GREAT BRITAIN AND NORTHERN IRELAND
IPC分类号： G01D05/48
CPC分类号： G01D5/48 , G01B9/02023 , G01B9/02097 , G01B2290/30 , G01J9/04
摘要： Apparatus for measuring displacements of an object to nanometer accuracy, particularly for use in fabricating modern signal processing components. This comprises a radio frequency source for a primary electrical signal (50), a transducer (24) for generating an intermediate signal of lesser wavelength at least partly therefrom, a phase shifting means (56) interactive with the intermediate signal and associated with the object in such a way that a displacement of the object causes the phase shifting means (56) to change the path length of the intermediate signal by an amount directly related to the displacement, a phase transference means (60) for generating a secondary electrical signal using, at least partly, the intermediate signal so that the phase of the intermediate signal is transferred to the secondary signal, and a phase detector (62) for measuring the change of phase of the secondary signal relative to the primary on displacement of the object.
摘要翻译：用于将物体的位移测量为纳米精度的装置，特别用于制造现代信号处理部件。这包括用于主电信号（50）的射频源，用于至少部分从其产生较小波长的中间信号的换能器（24），与中间信号交互并与该物体相关联的相移装置以使得所述物体的位移使所述相移装置（56）将所述中间信号的路径长度改变与所述位移直接相关的量;相移装置（60），用于使用，至少部分地是中间信号，使得中间信号的相位被传送到次级信号;以及相位检测器（62），用于测量次级信号相对于物体的初级位移的相位变化。

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