Electromagnetically driven membrane mirror assembly
    1.
    发明申请
    Electromagnetically driven membrane mirror assembly 有权
    电磁驱动膜反射镜组件

    公开(公告)号:US20050194513A1

    公开(公告)日:2005-09-08

    申请号:US10794973

    申请日:2004-03-04

    IPC分类号: G01J1/20

    摘要: In an optics system, a flexible mirror is deformed with an electromagnetic force. In one embodiment, an electrical current is directed through the mirror, or a conductor attached to the mirror, in the presence of a magnetic field. In one application in an adaptive optics system, the membrane mirror is used in a wavefront sensor. Deformed to oscillate between convex and concave positions, the mirror is used to alternately defocus a received light signal for determining aberrations in the light signal. By detecting aberrations in the light signal, the adaptive optics system can correct for those aberrations.

    摘要翻译: 在光学系统中,柔性反射镜用电磁力变形。 在一个实施例中,在存在磁场的情况下,电流被引导通过反射镜或连接到反射镜的导体。 在自适应光学系统中的一个应用中,膜反射镜用于波前传感器。 变形为在凸和凹位置之间振荡,反射镜用于交替地聚焦接收的光信号以确定光信号中的像差。 通过检测光信号中的像差,自适应光学系统可以校正这些像差。

    Iris imaging using reflection from the eye
    2.
    发明申请
    Iris imaging using reflection from the eye 有权
    虹膜成像使用来自眼睛的反射

    公开(公告)号:US20060140454A1

    公开(公告)日:2006-06-29

    申请号:US11297578

    申请日:2005-12-07

    IPC分类号: G06K9/00 A61B3/10

    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. Eye reflection from the eyes is 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。 眼睛的眼睛反射用于将高分辨率摄像机引导到眼睛以捕获虹膜的图像。

    IRIS IMAGING USING REFLECTION FROM THE EYE
    3.
    发明申请
    IRIS IMAGING USING REFLECTION FROM THE EYE 有权
    使用眼睛反射的IRIS成像

    公开(公告)号:US20080002863A1

    公开(公告)日:2008-01-03

    申请号:US11765401

    申请日:2007-06-19

    IPC分类号: G06K9/00

    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捕获虹膜的图像。

    POST PROCESSING OF IRIS IMAGES TO INCREASE IMAGE QUALITY
    4.
    发明申请
    POST PROCESSING OF IRIS IMAGES TO INCREASE IMAGE QUALITY 有权
    IRIS图像的后处理提高图像质量

    公开(公告)号:US20070216798A1

    公开(公告)日:2007-09-20

    申请号:US11752899

    申请日:2007-05-23

    IPC分类号: H04N5/222

    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。

    Data port alignment of free space optical communications terminal with adaptive optics
    5.
    发明申请
    Data port alignment of free space optical communications terminal with adaptive optics 有权
    自由空间光通信终端与自适应光学器件的数据端口对齐

    公开(公告)号:US20070223929A1

    公开(公告)日:2007-09-27

    申请号:US11387500

    申请日:2006-03-22

    申请人: J. Graves

    发明人: J. Graves

    IPC分类号: H04B10/00

    CPC分类号: H04B10/1121

    摘要: An approach for aligning an adaptive optics module and a data port in a free space optical communications terminal. A wavefront sensor in the adaptive optics system is aligned to a reference port. The data port is also aligned to the reference port. In this way, alignment of the wavefront sensor and the data port is achieved.

    摘要翻译: 用于在自由空间光通信终端中对准自适应光学模块和数据端口的方法。 自适应光学系统中的波前传感器与参考端口对齐。 数据端口也与参考端口对齐。 以这种方式,实现了波前传感器和数据端口的对准。