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公开(公告)号：US06464364B2
公开(公告)日：2002-10-15
申请号：US09769988
申请日：2001-01-25
IPC分类号： G02B2600
CPC分类号： G02F1/29 , G02B26/06 , G02B26/0825 , G02F1/0128
摘要： A deformable curvature mirror capable of controlled deformation by applying electrical voltages to electrode segments on the back of the mirror. Two plates of an electro-restrictive material, such as PZT or PMN, are jointed together with at least one conductive layer sandwiched therebetween. One plate has an outer conductive layer and a mirrored surface on the outer conductive layer. The conductive layers are electrically grounded. The other plate has a pattern of a plurality of electrode segments on the outer surface with each electrode segment having a separate electrical terminal for applying a variable electrical voltage thereto for separately transmitting a variable current through each electrode segment and through at least the other plate for causing variable expansion of the plate and thereby selectively deforming that plate and, in turn, the deformable curvature mirror.
摘要翻译： 一种可变形曲率镜，能够通过向反射镜背面的电极部分施加电压来控制变形。 诸如PZT或PMN的电极限制材料的两个板与夹在其间的至少一个导电层接合在一起。 一个板在外部导电层上具有外部导电层和镜面。 导电层电接地。 另一个板具有在外表面上的多个电极段的图案，其中每个电极段具有用于施加可变电压的单独的电端子，用于单独地传输可变电流通过每个电极段并且至少通过另一个板，用于 导致板的可变膨胀，并因此选择性地使该板变形，并且进而变形曲率镜。
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12.发明授权Combined wavefront sensor and data detector for a free space optical communications system with adaptive optics 有权用于具有自适应光学的自由空间光通信系统的组合波前传感器和数据检测器公开(公告)号：US07406263B2
公开(公告)日：2008-07-29
申请号：US10688575
申请日：2003-10-16
IPC分类号： H04B10/00
CPC分类号： H04B10/60
摘要： In an adaptive optics module, wavefront sensing and data detection are implemented in a single device. For example, an optical-to-electrical converter converts a data-encoded optical beam to an intermediate electrical signal, which contains both the data encoded in the beam and also wavefront information about the beam. The data and wavefront information are later separated, for example by frequency filtering.
摘要翻译： 在自适应光学模块中，波前感测和数据检测在单个设备中实现。 例如，光 - 电转换器将数据编码的光束转换成中间电信号，其中包含在光束中编码的数据和关于光束的波前信息。 数据和波前信息稍后分开，例如通过频率滤波。
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公开(公告)号：US06452145B1
公开(公告)日：2002-09-17
申请号：US09579786
申请日：2000-05-26
IPC分类号： G01J120
CPC分类号： G02B26/06 , G01J9/00 , G02B26/0825
摘要： A wavefront sensor for detecting the wavefront produced by light waves from a light source comprises optically refractory or reflective means for receiving the light waves from the light source and producing two defocused pupil images at two different locations along an optical axis. A detector is positioned at a location spaced from the two locations of the two focused pupil images for the detector means to receive and detect two equally and oppositely defocused pupil images. A computer with appropriate software processes the characteristics of the two defocused pupil images from the detector to determine the curvature of the wavefront based on the light intensities with Dirichlet's boundary conditions for the light waves received by the wavefront sensor.
摘要翻译： 用于检测由光源的光波产生的波前的波前传感器包括用于从光源接收光波的光学耐火或反射装置，并且沿着光轴在两个不同位置产生两个散焦的瞳孔图像。 检测器位于与两个聚焦瞳孔图像的两个位置间隔开的位置处，用于检测器装置，以接收和检测两个相等且相对散焦的瞳孔图像。 具有适当软件的计算机处理来自检测器的两个散焦瞳孔图像的特征，以基于由波前传感器接收的光波的Dirichlet边界条件的光强度来确定波前的曲率。
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公开(公告)号：US08092021B1
公开(公告)日：2012-01-10
申请号：US12021189
申请日：2008-01-28
CPC分类号： A61B3/1015 , A61B3/0008 , A61B3/1216 , A61B3/152 , G06K9/00604
摘要： The present invention provides a rapid, high quality iris imaging system. In one embodiment, on-axis illumination is used. A single steering mechanism steers both the camera and the illumination, without parallax issues. The illumination beam can be combined along the camera's optical axis before or after the fine steering and focus correction mechanism. In a pre-correction configuration, the iris illumination spot can be reduced in size to be only slightly larger than the iris. In both the pre and post-correction configuration, the eye safety limits will be most critical at the subject, which allows for maximization of the illumination flux.
摘要翻译： 本发明提供了一种快速，高品质的虹膜成像系统。 在一个实施例中，使用轴上照明。 单一的转向机构可以引导摄像机和照明，而不产生视差问题。 照明光束可以在精细转向和聚焦校正机制之前或之后沿照相机的光轴组合。 在预校正配置中，可以将虹膜照明点的尺寸减小到仅比虹膜稍大。 在校正前和校正后配置中，眼睛安全限度对于受试者而言至关重要，这允许照明通量最大化。
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公开(公告)号：US08025399B2
公开(公告)日：2011-09-27
申请号：US12021175
申请日：2008-01-28
IPC分类号： A61B3/00
CPC分类号： G06K9/00604
摘要： An iris imaging system used for biometric identification provides a combined iris imager and wavefront sensor. The detector array allows for independent readout of different regions, such that a wavefront sensor region can be read out fast while allowing signal to integrate on the iris imaging region. Alternatively, the entire array may be used for wavefront sensing during an acquisition phase, and then at least a portion of the array may be switched to be used for iris imaging during a subsequent imaging phase. An optical periscope optionally allows various optics to be inserted in front of the combined iris imager and wavefront sensor. In another embodiment, the glint image of an on-axis or near on-axis illumination source is picked off at the image plane and directed to the wavefront sensor optics, while allowing all of the light from the iris field to pass through to the iris imaging camera.
摘要翻译： 用于生物识别的虹膜成像系统提供组合的虹膜成像仪和波前传感器。 检测器阵列允许不同区域的独立读出，从而可以快速地读出波前传感器区域，同时允许信号集成在虹膜成像区域上。 或者，整个阵列可以在采集阶段期间用于波前感测，然后可以切换阵列的至少一部分以在后续成像阶段期间用于虹膜成像。 光学潜望镜可选地允许将各种光学元件插入到组合的虹膜成像器和波前传感器的前面。 在另一个实施例中，轴上或近轴上照明光源的闪光图像在图像平面处被拾取并被引导到波前传感器光学器件，同时允许来自虹膜区域的所有光线通过虹膜 成像相机。
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公开(公告)号：US07869627B2
公开(公告)日：2011-01-11
申请号：US11752899
申请日：2007-05-23
CPC分类号： G06K9/00604 , A61B3/1216 , G02B27/0093 , G06K9/0061
摘要： A rapid iris acquisition, tracking, and imaging system can be used at longer standoff distances and over larger capture volumes, without the active cooperation of subjects. Light illuminates the subjects' eyes and a high resolution camera captures images of the irises. The images of the irises are processed by a post processing module to improve their quality. In one approach, the point spread function of the image capture subsystem is estimated using glint reflections from the eye, and the estimated point spread function is used in deconvolution to increase the resolution of the iris images. The post processed iris images have sufficient resolution to be used for biometric identification.
摘要翻译： 快速虹膜采集，跟踪和成像系统可以在更长的距离距离和更大的捕获体积下使用，而不需要主体的积极配合。 光照亮受试者的眼睛，高分辨率的摄像机拍摄虹膜的图像。 虹膜的图像由后处理模块处理以提高其质量。 在一种方法中，使用来自眼睛的闪烁反射来估计图像捕获子系统的点扩散函数，并且将估计的点扩散函数用于去卷积以增加虹膜图像的分辨率。 后处理的虹膜图像具有足够的分辨率用于生物识别。
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公开(公告)号：US20090046249A1
公开(公告)日：2009-02-19
申请号：US12192785
申请日：2008-08-15
IPC分类号： A61B3/15
CPC分类号： G06K9/00604 , A61B3/1216
摘要： A rapid iris acquisition, tracking, and imaging system can be used at longer standoff distances and over larger capture volumes, without the active cooperation of subjects. The captured iris images can be used for biometric identification. Light illuminates the subjects' eyes. Reflections from the eyes are used to steer a high resolution camera to the eyes in order to capture images of the irises.
摘要翻译： 快速虹膜采集，跟踪和成像系统可以在更长的距离距离和更大的捕获体积下使用，而不需要主体的积极配合。 捕获的虹膜图像可用于生物识别。 光照亮受试者的眼睛。 眼睛的反射用于将高分辨率摄像机引导到眼睛，以便捕获虹膜的图像。
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公开(公告)号：US06568647B2
公开(公告)日：2003-05-27
申请号：US09769874
申请日：2001-01-25
IPC分类号： A47G124
CPC分类号： G02B26/0825
摘要： A mounting apparatus for a deformable mirror that has a peripheral mounting portion with oppositely facing and parallel mounting surfaces. A base member and a mounting ring have juxtaposed peripheral flange portions with rubber o-rings for engaging the parallel mounting surfaces of the mirror. A plurality of set screws are provided in the base member and the mounting ring in the peripheral flange portions and engage the o-rings for applying and adjusting a mounting force to the mounting surfaces of the mirror. The base member is also provided with set screws in the perimeter for engaging and centering the mirror.
摘要翻译： 一种用于可变形反射镜的安装装置，其具有具有相对面对并且平行的安装表面的外围安装部分。 基座部件和安装环具有并列的外围凸缘部分，其具有橡胶O形环，用于接合反射镜的平行安装表面。 多个固定螺钉设置在基部构件和安装环中的周边凸缘部分中，并且与O形环接合，用于向安装表面施加和调节安装力。 基座部件还在周边设有固定螺钉，用于接合和定心镜子。
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公开(公告)号：US20130088583A1
公开(公告)日：2013-04-11
申请号：US13268906
申请日：2011-10-07
IPC分类号： H04N7/18
CPC分类号： G06K9/00604
摘要： A portable, hand held iris imaging system captures iris images that may be used in biometric identification. The system includes an illumination source for illuminating a subject's eye and a camera to capture light reflected from the subject's eye. An optical element positioned between the illumination source and the camera focuses light reflected from the subject's eye onto the camera. A controller receives the captured image and provides it to a display. If the system is not correctly positioned for iris image capture, the display may also provide visual feedback regarding how the system can be properly repositioned. The system includes a housing with a portable form factor so that it may be easily operated.
摘要翻译： 便携式手持虹膜成像系统捕获可用于生物识别的虹膜图像。 该系统包括用于照亮被摄体的眼睛的照明源和相机以捕获从被摄体的眼睛反射的光。 位于照明源和照相机之间的光学元件将从被摄物体的眼睛反射的光聚焦到照相机上。 控制器接收捕获的图像并将其提供给显示器。 如果系统未正确定位用于虹膜图像捕获，则显示器还可以提供有关如何正确重新定位系统的视觉反馈。 该系统包括具有便携式外形尺寸的壳体，使得其可以容易地操作。
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公开(公告)号：US20090046899A1
公开(公告)日：2009-02-19
申请号：US12021175
申请日：2008-01-28
IPC分类号： G06K9/00
CPC分类号： G06K9/00604
摘要： An iris imaging system used for biometric identification provides a combined iris imager and wavefront sensor. The detector array allows for independent readout of different regions, such that a wavefront sensor region can be read out fast while allowing signal to integrate on the iris imaging region. Alternatively, the entire array may be used for wavefront sensing during an acquisition phase, and then at least a portion of the array may be switched to be used for iris imaging during a subsequent imaging phase. An optical periscope optionally allows various optics to be inserted in front of the combined iris imager and wavefront sensor. In another embodiment, the glint image of an on-axis or near on-axis illumination source is picked off at the image plane and directed to the wavefront sensor optics, while allowing all of the light from the iris field to pass through to the iris imaging camera.
摘要翻译： 用于生物识别的虹膜成像系统提供组合的虹膜成像仪和波前传感器。 检测器阵列允许不同区域的独立读出，从而可以快速地读出波前传感器区域，同时允许信号集成在虹膜成像区域上。 或者，整个阵列可以在采集阶段期间用于波前感测，然后可以切换阵列的至少一部分以在后续成像阶段期间用于虹膜成像。 光学潜望镜可选地允许将各种光学元件插入到组合的虹膜成像器和波前传感器的前面。 在另一个实施例中，轴上或近轴上照明光源的闪光图像在图像平面处被拾取并被引导到波前传感器光学器件，同时允许来自虹膜区域的所有光通过虹膜 成像相机。
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