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14 条记录 (耗时 0.014 秒)

    Method of inverting ferroelectric domains by application of controlled electric field
    1.
    发明授权
    Method of inverting ferroelectric domains by application of controlled electric field 失效
    通过施加受控电场反转铁电畴的方法

    公开(公告)号：US5756263A

    公开(公告)日：1998-05-26

    申请号：US452931

    申请日：1995-05-30

    申请人： Mool C. Gupta ,  Alan C. G. Nutt

    发明人： Mool C. Gupta ,  Alan C. G. Nutt

    IPC分类号： G02F1/37 ,  G02F1/355 ,  G03C5/00

    CPC分类号： G02F1/3558

    摘要： A method for forming inverted ferroelectric domain regions in a substrate including ferroelectric material and having two major opposite surfaces. The method includes application of controlled electric field in selected regions to inhibit subsequent nucleation and growth of selected domains; applying a conductive electrode over the opposite major surfaces; and providing a voltage to the conductive electrodes having a sufficient magnitude and duration to cause the ferroelectric polarization to invert in selected unmodified regions.

    摘要翻译： 一种在包含铁电材料并具有两个主要相对表面的衬底中形成反向铁电畴区的方法。 该方法包括在所选择的区域中施加受控电场以抑制所选择的结构域的随后的成核和生长; 在相对的主表面上施加导电电极; 并向具有足够大小和持续时间的导电电极提供电压，以使铁电极化在选定的未改性区域内反转。

    Modulator for optical printing
    3.
    发明授权
    Modulator for optical printing 有权
    光学打印调制器

    公开(公告)号：US06211997B1

    公开(公告)日：2001-04-03

    申请号：US09283068

    申请日：1999-03-31

    申请人： Alan C. G. Nutt ,  Sujatha Ramanujan ,  Joseph F. Revelli, Jr.

    发明人： Alan C. G. Nutt ,  Sujatha Ramanujan ,  Joseph F. Revelli, Jr.

    IPC分类号： G02B2600

    CPC分类号： G02F1/315 ,  G02F1/0316 ,  G02F2203/21

    摘要： A modulator for a high optical power printing includes a transparent crystal and a patterned buffer layer formed over one of the surfaces of the crystal. An electrode array is formed so that each electrode of the electrode array is patterned directly on each portion of the patterned buffer layer. In a further feature of the invention, the crystal substrate can be formed so that opposing endfaces through which high optical power laser light passes are at an angle and are antireflection coated. A transparent and electrically insulating overcoat is provided above the electrodes.

    摘要翻译： 用于高光功率印刷的调制器包括透明晶体和在晶体的一个表面上形成的图案化缓冲层。 形成电极阵列，使得电极阵列的每个电极直接在图案化缓冲层的每个部分上图案化。 在本发明的另一特征中，晶体基板可以形成为使得高光功率激光通过的相对的端面成角度并且被抗反射涂覆。 在电极上方设置透明且电绝缘的外涂层。

    Ferroelectric light frequency doubler device with a surface coating and having an inverted domain structure
    4.
    发明授权
    Ferroelectric light frequency doubler device with a surface coating and having an inverted domain structure 失效
    具有表面涂层并具有倒置畴结构的铁电光倍增器器件

    公开(公告)号：US5715092A

    公开(公告)日：1998-02-03

    申请号：US268373

    申请日：1994-06-29

    申请人： Mool C. Gupta ,  Alan C. G. Nutt

    发明人： Mool C. Gupta ,  Alan C. G. Nutt

    IPC分类号： G02F1/295 ,  G02F1/35 ,  G02F1/355 ,  G02F1/37 ,  G02F1/377

    CPC分类号： G02F1/37 ,  G02F1/3558 ,  G02F1/295 ,  G02F1/3775 ,  G02F2001/3548

    摘要： A ferroelectric light frequency doubler device has a surface coating on one surface of an initially uniformly poled ferroelectric crystal, the surface coating on the one surface being exposed to a scanning electron beam so as to form a spatially periodically alternating polarity domain structure in the crystal. The surface coating can be of an inorganic material or it can be of a polymeric organic material. The surface coating can be adapted to be patterned to form an optical grating in registrative alignment with the spatially periodically alternating polarity domain structure when such optical grating is desired. Alternatively, the surface coating may remain on the device as a protective coating, or it may be removed upon formation of the alternating polarity domain structure in the crystal. When the surface coating is adapted to be responsive to the scanning electron beam, the spatially periodically alternating domains in the ferroelectric crystal and a latent optical grating pattern in the surface coating are established at the same time by the electron beam. The latent optical grating pattern can be formed into an optical grating during a subsequent pattern development step.

    摘要翻译： 铁电倍频装置在最初均匀极化的铁电晶体的一个表面上具有表面涂层，一个表面上的表面涂层暴露于扫描电子束，以在晶体中形成空间周期性交替的极性域结构。 表面涂层可以是无机材料，或者它可以是聚合有机材料。 当期望这种光栅时，表面涂层可以适于被图案化以形成与空间周期性交替极性域结构的注册对准的光栅。 或者，表面涂层可以保留在器件上作为保护涂层，或者可以在晶体中形成交替的极性域结构时去除表面涂层。 当表面涂层适于响应于扫描电子束时，铁电晶体中的空间周期性交替的畴和表面涂层中的潜在光栅图案通过电子束同时建立。 在随后的图案显影步骤期间，潜光学光栅图案可以形成为光栅。

    Phase-noise type broad spectral bandwidth optical low-pass anti-aliasing filter
    5.
    发明授权
    Phase-noise type broad spectral bandwidth optical low-pass anti-aliasing filter 失效
    相位噪声类型宽谱带宽光学低通抗混叠滤波器

    公开(公告)号：US06040857A

    公开(公告)日：2000-03-21

    申请号：US863648

    申请日：1997-05-27

    申请人： Jeffrey I. Hirsh ,  Joseph F. Revelli, Jr. ,  Alan C. G. Nutt

    发明人： Jeffrey I. Hirsh ,  Joseph F. Revelli, Jr. ,  Alan C. G. Nutt

    IPC分类号： G02B5/18 ,  G02B27/46 ,  H04N9/07 ,  H04N5/217

    CPC分类号： G02B27/46 ,  G02B5/1871

    摘要： A device is described for a very low cost anti-aliasing filter to be used to suppress aliasing artifacts present in discretely sampled solid-state electronic imaging devices. This device includes a transparent substrate upon which a multiplicity of transparent phase spots are placed. The diameter and thickness of the transparent phase spots are designed in such a way to cause just the right amount of blurring to suppress the aliasing artifacts, yet render a reasonable sharp image for spatial frequencies below the sampling frequency of the imager. This suppression is further accomplished over a broad spectral range. The phase noise filter thus formed can be placed either in object space or in image space.

    摘要翻译： 描述了一种用于非常低成本的抗混叠滤波器的装置，用于抑制存在于离散采样的固态电子成像装置中的混叠伪影。 该装置包括透明基板，多个透明相位点放置在该透明基板上。 透明相位点的直径和厚度被设计成仅仅产生适当的模糊量来抑制混叠伪影，而对于低于成像器的采样频率的空间频率，给出合理的清晰图像。 在宽光谱范围内进一步完成了抑制。 这样形成的相位噪声滤波器可以放置在物体空间或图像空间中。

    Ferroelectric crystal having inverted domain structure
    6.
    发明授权
    Ferroelectric crystal having inverted domain structure 失效
    铁电晶体具有反向畴结构

    公开(公告)号：US5748361A

    公开(公告)日：1998-05-05

    申请号：US686134

    申请日：1996-07-24

    申请人： Mool C. Gupta ,  Alan C. G. Nutt ,  Venkatraman Gopalan

    发明人： Mool C. Gupta ,  Alan C. G. Nutt ,  Venkatraman Gopalan

    IPC分类号： G02F1/355 ,  G02F1/37

    CPC分类号： G02F1/3558

    摘要： A method of forming ferroelectric domain regions in a ferroelectric crystal cut so that the polarization direction is in the plane of the crystal and is along the z direction is disclosed. The method includes forming a conductive ground electrode on the surface of the plane and having an edge perpendicular to the z direction or the polarization direction in the crystal plane; and electron beam bombarding the plane of the crystal in particular spots to deposit a charge such that the electric field created between the edge of the electrode and the spots is in a direction opposite to the crystal polarization direction and causing the inversion of the crystal polarization direction between the charge spot and the electrode.

    摘要翻译： 公开了一种在铁电晶体切割中形成铁电畴区的方法，使得偏振方向在晶体的平面中并且沿着z方向。 该方法包括在平面的表面上形成导电接地电极，并且在晶面内具有垂直于z方向或偏振方向的边缘; 并且电子束在特定的点上轰击晶体的平面以沉积电荷，使得在电极的边缘和斑点之间产生的电场处于与晶体偏振方向相反的方向并导致晶体偏振方向的反转 在电荷点和电极之间。

    Methods for preparing polymer stripe waveguides and polymer stripe waveguides prepared thereby
    7.
    发明授权
    Methods for preparing polymer stripe waveguides and polymer stripe waveguides prepared thereby 失效
    制备由其制备的聚合物条纹波导和聚合物条纹波导的方法

    公开(公告)号：US5322986A

    公开(公告)日：1994-06-21

    申请号：US864268

    申请日：1992-04-06

    申请人： Alan C. G. Nutt

    发明人： Alan C. G. Nutt

    IPC分类号： G02B6/12 ,  G02B6/13 ,  G02B6/10

    CPC分类号： G02B6/13

    摘要： A method for preparing a poled polymer stripe waveguide comprising preparing a polymer waveguide blank, electric field poling the polymer waveguide blank, and photoablating the outline of the stripe waveguide in the waveguide blank. The invention also provides a method for preparing passive polymer stripe waveguides and non-linear optical and passive waveguides produced by the methods of the invention.

    摘要翻译： 一种制备极化聚合物条纹波导的方法，包括制备聚合物波导空白，极化聚合物波导空白的电场，以及照射波导空白中条纹波导的轮廓。 本发明还提供了通过本发明的方法制备的无源聚合物条纹波导和非线性光学和无源波导的方法。

    Anti-aliasing low-pass blur filter for reducing artifacts in imaging apparatus
    8.
    发明授权
    Anti-aliasing low-pass blur filter for reducing artifacts in imaging apparatus 失效
    抗混叠低通模糊滤镜，用于减少成像设备中的伪影

    公开(公告)号：US06937283B1

    公开(公告)日：2005-08-30

    申请号：US08770381

    申请日：1996-12-03

    申请人： David Kessler ,  Alan C. G. Nutt ,  Russell J. Palum

    发明人： David Kessler ,  Alan C. G. Nutt ,  Russell J. Palum

    IPC分类号： G02B5/20 ,  G02B5/30 ,  G02B27/46 ,  H04N1/04 ,  H04N1/195 ,  H04N5/238 ,  H04N9/077 ,  H04N5/225

    CPC分类号： H04N9/077 ,  G02B5/3083 ,  G02B27/46 ,  H04N1/195

    摘要： An imaging apparatus (50) for generating an image signal from incident light with higher spatial frequencies of the incident light limited to reduce undersampling artifacts. Apparatus (50) includes a detector plane (62) for generating the image signal from an array of photosites, (63) and an optical section having a relatively thin lithium niobate rhomboidal filter (51) interposed in the path of the incident light so as to produce a blurred image on the photosites. A filter configuration is disclosed which produces four spots (58) at the imaging sensors (62) positioned at the corners of a rhombus.

    摘要翻译： 一种用于从入射光的较高空间频率的入射光产生图像信号的成像设备（50），其被限制以减少欠采样伪影。 装置（50）包括用于从光电阵列生成图像信号的检测器平面（63）和具有相对薄的铌酸锂菱形滤波器（51）的光学部分，该光学部分插入在入射光的路径中，以便 在光斑上产生模糊的图像。 公开了一种过滤器配置，其在位于菱形拐角处的成像传感器（62）处产生四个点（58）。

    Optical phase noise filter using randomly placed spots
    9.
    发明授权
    Optical phase noise filter using randomly placed spots 有权
    光学相位噪声滤波器采用随机放置点

    公开(公告)号：US6031666A

    公开(公告)日：2000-02-29

    申请号：US131707

    申请日：1998-08-10

    申请人： Alan C. G. Nutt ,  Jeffrey I. Hirsh

    发明人： Alan C. G. Nutt ,  Jeffrey I. Hirsh

    IPC分类号： G02B5/20 ,  G02B26/06 ,  G02B5/30

    CPC分类号： G02B26/06 ,  G02B5/20

    摘要： An optical phase noise filter for use with an optical imaging system such as a solid-state imager or the like, including a transparent substrate; and a plurality of transparent spots randomly placed on the transparent substrate for producing a phase difference between a wavefront transmitted through the transparent spots and that portion of the transparent substrate other than the transparent spots to define an optical phase noise filter having a spatial sampling cut-off frequency and wherein the variance of the transparent spot to transparent spot distance between adjacent spots is minimized while maintaining the randomness of transparent spot placement.

    摘要翻译： 一种与诸如固态成像仪等的光学成像系统一起使用的光学相位噪声滤波器，包括透明基板; 以及随机地放置在透明基板上的多个透明点，用于产生通过透明点透射的波前与除了透明点之外的透明基板的部分之间的相位差，以限定具有空间采样截止的光学相位噪声滤波器， 关闭频率，并且其中相邻点之间的透明点对透明点距离的方差最小化，同时保持透明点放置的随机性。