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    OPTICAL SENSING WITH TESSELLATED DIFFRACTION-PATTERN GENERATORS
    31.
    发明申请
    OPTICAL SENSING WITH TESSELLATED DIFFRACTION-PATTERN GENERATORS 有权
    光学传感与消除差分图形发生器

    公开(公告)号：US20170069675A1

    公开(公告)日：2017-03-09

    申请号：US15356363

    申请日：2016-11-18

    Applicant: Rambus Inc.

    Inventor： Patrick R. Gill ,  David G. Stork

    IPC: H01L27/146

    CPC classification number: H01L27/14625 ,  G02B5/1819 ,  G02B5/1842 ,  H01L27/1462 ,  H01L27/14623 ,  H01L27/14627 ,  H01L27/14629

    Abstract: An array of diffraction-pattern generators employ phase anti-symmetric gratings to projects near-field spatial modulations onto a closely spaced array of photoelements. Each generator in the array of generators produces point-spread functions with spatial frequencies and orientations of interest. The generators are arranged in an irregular mosaic with little or no short-range repetition. Diverse generators are shaped and placed with some irregularity to reduce or eliminate spatially periodic replication of ambiguities to facilitate imaging of nearby scenes.

    Abstract translation: 衍射图形发生器阵列采用相位反对称光栅将近场空间调制投影到紧密间隔的光电元件阵列上。 发生器阵列中的每个发生器产生具有空间频率和感兴趣方向的点扩展函数。 发电机布置成不规则的马赛克，很少或没有短距离的重复。 不同的发电机的形状和放置有一些不规则，以减少或消除空间周期性的模糊性复制，以促进附近场景的成像。

    Systems and Methods for Lensless Image Acquisition
    32.
    发明申请
    Systems and Methods for Lensless Image Acquisition 审中-公开
    无镜像图像采集系统与方法

    公开(公告)号：US20160241799A1

    公开(公告)日：2016-08-18

    申请号：US15006266

    申请日：2016-01-26

    Applicant: Rambus Inc.

    Inventor： Patrick R. Gill

    IPC: H04N5/357 ,  G02B5/18 ,  H04N5/365

    CPC classification number: G02B5/1871 ,  G02B5/1814 ,  G06T3/0018 ,  G06T5/006 ,  G06T5/10 ,  G06T2207/20056 ,  H04N5/2254 ,  H04N5/23229

    Abstract: Image-sensing devices include odd-symmetry gratings that cast interference patterns over a photodetector array. Grating features offer considerable insensitivity to the wavelength of incident light, and also to the manufactured distance between the grating and the photodetector array. Photographs and other image information can be extracted from interference patterns captured by the photodetector array. Efficient extraction algorithms based on Fourier deconvolution introduce barrel distortion, which can be removed by resampling using correction functions.

    Abstract translation: 图像感测装置包括在光电检测器阵列上投射干涉图案的奇对称光栅。 光栅特征对入射光的波长以及光栅与光电检测器阵列之间的制造距离有相当大的不敏感性。 可以从由光电检测器阵列捕获的干涉图案中提取照片和其它图像信息。 基于傅立叶去卷积的有效提取算法引入了桶形失真，可以通过使用校正函数的重采样来去除。

    Ultra-Miniature Wide-Angle Lensless CMOS Visual Edge Localizer
    33.
    发明申请
    Ultra-Miniature Wide-Angle Lensless CMOS Visual Edge Localizer 审中-公开
    超微型广角无镜透视CMOS边缘定位器

    公开(公告)号：US20160169667A1

    公开(公告)日：2016-06-16

    申请号：US14950256

    申请日：2015-11-24

    Applicant: Rambus Inc.

    Inventor： David Geoffrey Stork ,  Mehjabin Sultana Monjur ,  Leonidas Spinoulas ,  Patrick R. Gill

    IPC: G01B11/26 ,  G02B5/18 ,  G02B27/42

    CPC classification number: G02B5/1876 ,  G02B27/4255

    Abstract: Described are imaging systems that employ diffractive structures as focusing optics optimized to detect visual edges (e.g., slits or bars). The diffractive structures produce edge responses that are relatively insensitive to wavelength, and can thus be used to precisely measure edge position for panchromatic sources over a wide angle of view. Simple image processing can improve measurement precision. Field-angle measurements can be made without the aid of lenses, or the concomitant cost, bulk, and complexity.

    Abstract translation: 描述了采用衍射结构作为优化用于检测视觉边缘（例如，狭缝或条）的聚焦光学元件的成像系统。 衍射结构产生对波长相对不敏感的边缘响应，因此可以用于在宽视角上精确测量全色光源的边缘位置。 简单的图像处理可以提高测量精度。 场角测量可以在没有镜头的帮助下进行，或伴随的成本，体积和复杂性。

    PATCHWORK FRESNEL ZONE PLATES FOR LENSLESS IMAGING
    34.
    发明申请
    PATCHWORK FRESNEL ZONE PLATES FOR LENSLESS IMAGING 有权
    PATCHWORK FRESNEL区域用于LESSSLESS IMAGING

    公开(公告)号：US20150219808A1

    公开(公告)日：2015-08-06

    申请号：US14458179

    申请日：2014-08-12

    Applicant: Rambus Inc.

    Inventor： Patrick R. Gill ,  David G. Stork ,  Jay A. Endsley

    IPC: G02B5/18 ,  H04N5/225

    CPC classification number: G02B5/1842 ,  H04N5/2254

    Abstract: Described are imaging devices that employ patchworks of diffractive structures as focusing optics. Each diffractive structure best focuses light over a relatively narrow cone of incident angles, and provides suboptimal focusing for incident angles outside that cone. Different diffractive structures best focus different angular ranges, with the patchwork thus providing an overall focusable response for the relatively broad range of angles required to image a scene. Images can be captured without a lens, and cameras can be made smaller than those that are reliant on lenses and ray-optical focusing.

    Abstract translation: 描述了使用衍射结构的拼接作为聚焦光学元件的成像装置。 每个衍射结构最好将光聚焦在相对较窄的入射角锥上，并为该锥体外的入射角提供次优聚焦。 不同的衍射结构最佳地聚焦不同的角度范围，因此拼接物为对场景成像所需的相对较宽的角度范围提供总体可聚焦的响应。 图像可以在没有镜头的情况下被捕获，并且相机可以比依赖于镜头和射线光学聚焦的照相机更小。

    Systems and methods for lensless image acquisition
    35.
    发明授权
    Systems and methods for lensless image acquisition 有权

    公开(公告)号：US10356313B2

    公开(公告)日：2019-07-16

    申请号：US15547155

    申请日：2016-02-05

    Applicant: Rambus Inc.

    Inventor： Patrick R. Gill

    IPC: H04N5/232 ,  G06T5/00 ,  G06T5/10 ,  H04N5/357 ,  G02B27/42 ,  G02B5/18

    Abstract: Image-sensing devices include odd-symmetry gratings that cast interference patterns over a photodetector array. Grating features offer considerable insensitivity to the wavelength of incident light, and also to the manufactured distance between the grating and the photodetector array. Photographs and other image information can be extracted from interference patterns captured by the photodetector array. Efficient extraction algorithms based on Fourier deconvolution introduce barrel distortion, which can be removed by resampling using correction functions. The sensing devices can be made to minimize distortion that results from efficient extraction algorithms based on Fourier deconvolution.

    DEPTH MEASUREMENT USING A PHASE GRATING
    37.
    发明申请
    DEPTH MEASUREMENT USING A PHASE GRATING 审中-公开

    公开(公告)号：US20180031372A1

    公开(公告)日：2018-02-01

    申请号：US15548745

    申请日：2016-01-25

    Applicant: Rambus Inc.

    Inventor： Patrick R. Gill

    IPC: G01C3/14 ,  H04N13/00 ,  G02B27/10 ,  G06T7/593 ,  H04N13/02

    CPC classification number: G01C3/14 ,  G02B27/1086 ,  G06T7/593 ,  H04N13/10 ,  H04N13/271

    Abstract: Binocular depth-perception systems use binary, phase-antisymmetric gratings to cast point-source responses onto an array of photosensitive pixels. The gratings and arrays can be manufactured to tight tolerances using well characterized and readily available integrated-circuit fabrication techniques, and can thus be made small, cost-effective, and efficient. The gratings produce point-source responses that are large relative to the pitch of the pixels, and that exhibit wide ranges of spatial frequencies and orientations. Such point-source responses make it easy to distinguish the point-source responses from fixed-pattern noise the results from spatial frequencies of structures that form the array.

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