Phase Modulation Devices for Optical Applications
    1.
    发明申请
    Phase Modulation Devices for Optical Applications 审中-公开
    用于光学应用的相位调制器件

    公开(公告)号:US20120038842A1

    公开(公告)日:2012-02-16

    申请号:US13263953

    申请日:2010-04-14

    IPC分类号: G02F1/133

    摘要: An optical phase modulation device having a layer of flexoelectro-optic effect liquid crystal material and electrode for applying an electric field to the layer of liquid crystal material. In this way, the optic axis of the liquid crystal layer can be deflected. This provides a phase shift to light transiting the liquid crystal layer. The substrate of the device is based on a liquid crystal over silicon (LCOS) microdisplay. The device is capable of providing multilevel phase shifts, e.g. for holographic displays.

    摘要翻译: 一种具有柔性电光效应液晶材料层的光学相位调制装置和用于向液晶材料层施加电场的电极。 以这种方式,液晶层的光轴可以偏转。 这提供了通过液晶层的光的相移。 器件的衬底基于硅上液晶(LCOS)微显示器。 该装置能够提供多级相移,例如 用于全息显示。

    Optical correlator
    2.
    发明授权
    Optical correlator 有权
    光相关器

    公开(公告)号:US07747102B2

    公开(公告)日:2010-06-29

    申请号:US10528533

    申请日:2003-09-11

    CPC分类号: G06E3/00

    摘要: An optical correlator includes an image production device and an image capture device disposed in a common plane. An optical device such as a lens or mirror provides a Fourier transform of image information from the image production device onto the image capture device. An advantage of embodiments of the invention is its small size.

    摘要翻译: 光学相关器包括设置在公共平面中的图像产生装置和图像捕获装置。 诸如透镜或反射镜的光学装置提供从图像产生装置到图像捕获装置的图像信息的傅立叶变换。 本发明的实施例的优点是其小尺寸。

    Optical correlator
    4.
    发明授权
    Optical correlator 失效
    光相关器

    公开(公告)号:US06804412B1

    公开(公告)日:2004-10-12

    申请号:US09581466

    申请日:2000-08-14

    IPC分类号: G06K964

    CPC分类号: G06E3/00 G06E3/005

    摘要: A method is described of optically performing a joint transform correlation starting from images displayed side-by-side on a spatial light modulator illuminated by a collimated light source. The image is focused by a lens onto a camera, the image is recorded by a frame grabber, and processed by a computer. By using a two pass process, the result is a measure of the correlation of the images. The images may be preprocessed in a phase-encoded chequerboard pattern and binarised by thresholding based on the average value of neighbouring pixels.

    摘要翻译: 描述了一种从由准直光源照明的空间光调制器上并排显示的图像开始光学执行联合变换相关的方法。 图像由镜头聚焦到相机上,图像由帧抓取器记录,并由计算机处理。 通过使用双通道处理,结果是对图像的相关性的度量。 图像可以以相位编码的棋盘图案进行预处理,并且基于相邻像素的平均值通过阈值进行二值化。