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1. 发明申请

WO2007091051A1 IMAGING SYSTEM 审中-公开
标题翻译：成像系统
公开(公告)号：WO2007091051A1
公开(公告)日：2007-08-16
申请号：PCT/GB2007/000411
申请日：2007-02-06
申请人： QINETIQ LIMITED , SLINGER, Christopher, William
发明人： SLINGER, Christopher, William
IPC分类号： G02B27/44 , G01T1/29
CPC分类号： G02B27/4294 , G01T1/295 , G02B27/4205 , G02B2207/129
摘要： The present invention relates to an imaging system which employs the same principles as coded aperture imaging. High angular resolution coded aperture imagers require a small aperture size and relatively large spacing between the coded aperture array and the detector. At such high resolutions diffraction effects can start to dominate and can degrade image quality. The present invention provides a detector array (8) which receives radiation from a scene (4) via a coded diffractive mask (6). The coded diffractive mask is designed such that its diffraction pattern at the waveband of interest is a well conditioned coded intensity pattern having a strong autocorrelation function with low sidelobes. Thus radiation reaching the detector array is diffracted by the diffractive mask (6) but in a defined way and it is the diffraction pattern of the mask which provides the coding. The scene image can then be reconstructed using the same techniques as for conventional coded aperture imaging but using the diffraction pattern of the mask as the aperture function. The coded diffractive mask may be a binary or greyscale mask, may operate in reflection or transmission and may be an amplitude or phase modulating mask.
摘要翻译：本发明涉及采用与编码孔径成像相同的原理的成像系统。高角度分辨率编码孔径成像器需要小的孔径尺寸和编码的孔径阵列和检测器之间相对较大的间距。在这种高分辨率下，衍射效应可以开始占主导地位并且可能降低图像质量。本发明提供了一种经由编码衍射掩模（6）从场景（4）接收辐射的检测器阵列（8）。编码的衍射掩模被设计成使得其在感兴趣的波段处的衍射图案是具有较强自相关函数且具有低旁瓣的良好调节的编码强度图案。因此，到达检测器阵列的辐射由衍射掩模（6）衍射，但是以限定的方式衍射，并且是提供编码的掩模的衍射图案。然后可以使用与常规编码孔径成像相同的技术来重建场景图像，但是使用掩模的衍射图案作为孔径函数。编码衍射掩模可以是二进制或灰度掩模，可以在反射或透射中操作，并且可以是幅度或相位调制掩模。

2. 发明申请

WO2007091053A1 OPTICAL MODULATOR 审中-公开
标题翻译：光学调制器
公开(公告)号：WO2007091053A1
公开(公告)日：2007-08-16
申请号：PCT/GB2007/000414
申请日：2007-02-06
申请人： QINETIQ LIMITED , MCNIE, Mark, Edward , LEWIS, Keith, Loder , SCOTT, Andrew, Maxwell , SLINGER, Christopher, William , BRUNSON, Kevin, Michael , SMITH, Gilbert, William
发明人： MCNIE, Mark, Edward , LEWIS, Keith, Loder , SCOTT, Andrew, Maxwell , SLINGER, Christopher, William , BRUNSON, Kevin, Michael , SMITH, Gilbert, William
IPC分类号： G02B5/28 , G02B26/00
CPC分类号： G02B26/001 , G02B5/281 , G02B5/284
摘要： A micro-opto-electro-mechanical systems (MOEMS) electro optical modulator (2) having an electrically tuneable optical resonator comprising an asymmetric Fabry-Perot etalon incorporating a mirror (10) resiliency biased with respect to a substrate (13) and moveable in relation thereto in response to a voltage applied there-between. The optical modulator (2) is capable of modulating electromagnetic radiation having a plurality of wavelengths. The modulator is adapted to modulate the transmission of short wave infrared radiation (SWIR), medium wave infrared radiation (MWIR) and long wave infrared radiation (LWIR) and the reflection of visible radiation. A spatial optical modulator having a plurality of said MOEMS optical modulators (2). A method of addressing said spatial optical modulator.
摘要翻译：一种微电光机电系统（MOEMS）电光调制器（2），其具有电可调光学谐振器，其包括不对称法布里 - 珀罗标准具，其包括相对于基板（13）偏置的反射镜（10）弹性并可在与其之间施加的电压的关系。光调制器（2）能够调制具有多个波长的电磁辐射。调制器适用于调制短波红外辐射（SWIR），中波红外辐射（MWIR）和长波红外辐射（LWIR）以及可见光辐射的透射。具有多个所述MOEMS光学调制器（2）的空间光学调制器。一种寻址所述空间光调制器的方法。

3. 发明申请

WO2010015805A1 PROCESSING FOR CODED APERTURE IMAGING 审中-公开
标题翻译：编码孔径成像的处理
公开(公告)号：WO2010015805A1
公开(公告)日：2010-02-11
申请号：PCT/GB2009/001870
申请日：2009-07-30
申请人： QINETIQ LIMITED , DE VILLIERS, Geoffrey, Derek , RIDLEY, Kevin, Dennis , SLINGER, Christopher, William , STRENS, Malcolm, John, Alexander
发明人： DE VILLIERS, Geoffrey, Derek , RIDLEY, Kevin, Dennis , SLINGER, Christopher, William , STRENS, Malcolm, John, Alexander
IPC分类号： G06T3/40 , G06T5/50 , G01T1/29
CPC分类号： G06T3/4053 , G06T5/50 , G06T2200/21 , G06T2207/10052
摘要： A method of reconstructing an image of a scene (4) from data output by a detector (8) in a coded aperture imaging system (2) comprises taking multiple frames of data using a different coded aperture array 6 for each frame. For each frame of data a decoding pattern is employed which is point source diffraction pattern corresponding to the coded aperture array used to acquire that frame. The decoding patterns are combined in a Gram matrix. A two-dimensional to one-dimensional mapping is applied to the frames of data. A solution to the data is constructed which is related to the scene (4) by an integral operator. The integral operator has an averaging kernel with a main lobe width which is smaller than the detector pixel size. Processing of the data yields an image which has sub-pixel resolution, i.e. resolution greater than the native resolution of the detector (8).
摘要翻译：根据编码孔径成像系统（2）中由检测器（8）输出的数据，重建场景（4）的图像的方法包括使用针对每个帧的不同编码孔径阵列6来获取多帧数据。对于每个数据帧，采用与用于获取该帧的编码孔径阵列相对应的点源衍射图案的解码图案。解码图案以Gram矩阵组合。将二维至一维映射应用于数据帧。通过积分算子构建与场景（4）相关的数据解。积分算子具有平均内核，其主瓣宽度小于检测器像素大小。数据的处理产生具有子像素分辨率的图像，即分辨率大于检测器（8）的原始分辨率。

4. 发明申请

WO2007091049A1 PROCESSING METHODS FOR CODED APERTURE IMAGING 审中-公开
标题翻译：编码孔径成像的处理方法
公开(公告)号：WO2007091049A1
公开(公告)日：2007-08-16
申请号：PCT/GB2007/000407
申请日：2007-02-06
申请人： QINETIQ LIMITED , SLINGER, Christopher, William , DE VILLIERS, Geoffrey, Derek , PAYNE, Douglas, Alan
发明人： SLINGER, Christopher, William , DE VILLIERS, Geoffrey, Derek , PAYNE, Douglas, Alan
IPC分类号： G01T1/29
CPC分类号： G01T1/295 , G02B2207/129
摘要： The present invention relates to processing of coded aperture images. Multiple frames of data acquired by the coded aperture imaging system, each with a different coded aperture array, are processed to form an image. The processing incorporates the constraints that the image solution must be positive and that the solution should be zero outside an expected image region. In one embodiment image enhancement may involve dividing the processed image into image regions having a spatially invariant point spread function and solving an inverse problem for each image region to reduce image blurring.
摘要翻译：编码孔径图像的处理本发明涉及编码孔径图像的处理。由编码孔径成像系统获取的每个具有不同编码孔径阵列的多帧数据被处理以形成图像。该处理结合了图像解决方案必须为正的约束，并且解决方案应该在预期图像区域之外为零。在一个实施例中，图像增强可以包括将经处理的图像划分成具有空间不变点扩展函数的图像区域，并且为每个图像区域求解反问题以减少图像模糊。

5. 发明申请

WO2007091047A1 CODED APERTURE IMAGING SYSTEM 审中-公开
标题翻译：编码孔径成像系统
公开(公告)号：WO2007091047A1
公开(公告)日：2007-08-16
申请号：PCT/GB2007/000405
申请日：2007-02-06
申请人： QINETIQ LIMITED , SLINGER, Christopher, William
发明人： SLINGER, Christopher, William
IPC分类号： G01T1/29
CPC分类号： G01T1/295
摘要： This invention relates to a coded aperture imaging system wherein a detector array is arranged to receive radiation from a scene via a coded aperture mask. The coded aperture mask provides a plurality of uncorrelated coded aperture arrays at different positions on the mask. Each distinct coded aperture array therefore passes coded information to the detector array. The intensity pattern at the detector array, which is a summation of the intensity patterns from each of the distinct coded aperture arrays, can be decoded separately for each coded aperture array to reconstruct a separate image associated with each coded aperture array. In this way the present invention teaches a coded aperture array means with multiple, simultaneous fields of view. The different fields of view can be different sizes and/or resolutions. Preferably the coded aperture mask is reconfigurable.
摘要翻译：本发明涉及一种编码孔径成像系统，其中检测器阵列被布置成经由编码孔径掩模从场景接收辐射。编码孔径掩模在掩模上的不同位置提供多个不相关的编码孔阵列。因此，每个不同的编码孔径阵列将编码信息传递到检测器阵列。检测器阵列处的强度图案是来自每个不同编码孔径阵列的强度图案的总和，可以针对每个编码孔径阵列分别解码，以重构与每个编码孔径阵列相关联的单独图像。以这种方式，本发明教导了具有多个同时视场的编码孔径阵列装置。不同的视野可以是不同的尺寸和/或分辨率。优选地，编码孔径掩模是可重新配置的。

6. 发明申请

WO2006125975A1 CODED APERTURE IMAGING SYSTEM 审中-公开
标题翻译：编码孔径成像系统
公开(公告)号：WO2006125975A1
公开(公告)日：2006-11-30
申请号：PCT/GB2006/001890
申请日：2006-05-23
申请人： QINETIQ LIMITED , SLINGER, Christopher, William , LEWIS, Keith, Loder
发明人： SLINGER, Christopher, William , LEWIS, Keith, Loder
IPC分类号： G01T1/29
CPC分类号： G01T1/295 , G02B27/00 , G02B2207/129 , G06T1/0007 , H04N5/2259 , H04N5/33 , H04N5/335
摘要： This invention relates to coded aperture imaging apparatus and methods. In one aspect a coded aperture imager has at least one detector array and a reconfigurable coded aperture mask means. A reconfigurable coded aperture mask means can display various coded aperture masks to provide imaging across different fields of view and/or with different resolution without requiring any moving parts or bulky optical components. More than one detector array can be used to provide large area imaging without requiring seamless tiling and this represents another aspect of the invention. The present invention also relates to the use of coded aperture imaging in the visible, ultraviolet or infrared wavebands. The use of coded aperture imaging for imaging through a curved optical element is taught as the image decoding can automatically remove any aberrations introduced by the curved element.
摘要翻译：本发明涉及编码孔径成像装置和方法。在一个方面，编码孔径成像器具有至少一个检测器阵列和可重新配置的编码孔径掩模装置。可重构编码孔径掩模装置可以显示各种编码孔径掩模，以在不同视场和/或具有不同分辨率的情况下提供成像，而不需要任何移动部件或庞大的光学部件。可以使用多于一个的检测器阵列来提供大面积成像，而不需要无缝拼接，这代表了本发明的另一方面。本发明还涉及在可见光，紫外或红外波段中使用编码孔径成像。教导了通过弯曲光学元件进行成像的编码孔径成像的使用，因为图像解码可以自动消除由弯曲元件引入的任何像差。

7. 发明申请

WO2004031841A2 RECONFIGURABLE SPATIAL LIGHT MODULATORS 审中-公开
标题翻译：可重构的空间光调节器
公开(公告)号：WO2004031841A2
公开(公告)日：2004-04-15
申请号：PCT/GB2003/004284
申请日：2003-10-06
申请人： HOLOGRAPHIC IMAGING LLC , SLINGER, Christopher, William
发明人： SLINGER, Christopher, William
IPC分类号： G02F1/00
CPC分类号： G03H1/2205 , G02B5/32 , G02F1/133504 , G03H1/0005 , G03H1/2249 , G03H1/2294 , G03H2001/0816 , G03H2001/2239 , G03H2001/2292 , G03H2210/30 , G03H2223/13 , G03H2223/14 , G03H2223/19 , G03H2225/22 , G03H2225/25 , G03H2225/55 , G03H2225/60
摘要： This invention relates to reconfigurable spatial light modulators (SLM) incorporating a scatter plate (5). Computer generated diffraction patterns or holograms may be loaded on the (SLM) either as a single frame or as a series of frames for observation by an observer. In a preferred embodiment both an electrically addressable spatial light modulator (EASLM) and an optically addressable spatial light modulator (OASLM) are used. The (OASLM) may be formed of several smaller (OASLMs) arranged in a matrix format. The faster (EASLM) forms a light pattern on sub-areas of the large (OASLM) in turn to give a large display. The scatter plate (5) is arranged at the output of the (SLM) nearest an observer. This scatter plate has a known characteristic and serves to increase the field of view and/or reduce the number of pixels required to give a holographic or two dimensional displays. Prior to producing a display, the diffraction patterns, holograms, or image in the computer is modified to take account of the properties of the scatter plate; a modified computer generated diffraction pattern, hologram, or image is then displayed to an observer. The system may also be used for optical switching.
摘要翻译：本发明涉及包含散射板（5）的可重构空间光调制器（SLM）。计算机生成的衍射图案或全息图可以作为单个框架或作为用于观察者观察的一系列框架加载在（SLM）上。在优选实施例中，使用电寻址空间光调制器（EASLM）和光寻址空间光调制器（OASLM）。（OASLM）可以由以矩阵格式排列的几个较小的（OASLM）形成。更快的（EASLM）在大型（OASLM）的子区域上形成一个亮光图案，以便给出大的显示。散射板（5）布置在最靠近观察者的（SLM）的输出处。该散射板具有已知的特性并且用于增加视场和/或减少提供全息或二维显示器所需的像素的数量。在生产显示器之前，修改计算机中的衍射图案，全息图或图像以考虑散射板的特性; 然后将修改后的计算机生成的衍射图案，全息图或图像显示给观察者。该系统也可用于光开关。

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