Super-resolving imaging system
    21.
    发明授权
    Super-resolving imaging system 有权
    超分辨成像系统

    公开(公告)号:US06344893B1

    公开(公告)日:2002-02-05

    申请号:US09596445

    申请日:2000-06-19

    IPC分类号: G01C300

    摘要: A super-resolving imaging apparatus employs diffractive optical elements placed on the imaging lens. This element, and the use of a modified Scheimpflug arrangement allow the conversion of degrees of freedom in one axis of a field of view to a larger degree of freedom in another axis in order to obtain a high resolution image with a wide depth of focus and large field of view. Replicas created by the diffractive elements are mutually shifted by subpixel amounts, and are combined using a Gabor transform, which is facilitated by a spatial mask placed over the detector array. The apparatus is suitable for performing distance estimation on an object within the field of view.

    摘要翻译: 超分辨成像装置使用放置在成像透镜上的衍射光学元件。 该元件以及改进的Scheimpflug装置的使用允许将视场的一个轴上的自由度转换到另一个轴上的较大自由度,以便获得具有宽的焦深​​的高分辨率图像,并且 大视野。 由衍射元件产生的复制品相互偏移了子像素量,并且使用Gabor变换进行组合,Gabor变换由放置在检测器阵列上的空间掩模所促进。 该装置适于对视场内的对象执行距离估计。

    Bar code scanner utilizing time-multiplexed scan lines
    22.
    发明授权
    Bar code scanner utilizing time-multiplexed scan lines 失效
    条码扫描器利用时间复用的扫描线

    公开(公告)号:US5912450A

    公开(公告)日:1999-06-15

    申请号:US864452

    申请日:1997-05-28

    IPC分类号: G06K7/10 G06K7/14

    摘要: A bar code reader and method of reading a bar code symbol successively generates scan patterns at different times on the symbol. Preferably, two light sources are alternately energized to alternately produce two scan lines across the symbol. Each scan line reflects light from the symbol. The reflected light is detected by a photodetector which, in turn, generates an electrical signal. This signal is decoded into data corresponding to the symbol.

    摘要翻译: 条形码读取器和读取条形码符号的方法在符号上的不同时间连续地生成扫描图案。 优选地,两个光源交替地通电以交替地跨越符号产生两条扫描线。 每个扫描线反映符号的光。 反射光由光电检测器检测,光电检测器又产生电信号。 该信号被解码成对应于符号的数据。

    Holographic scanning
    23.
    发明授权

    公开(公告)号:US5555130A

    公开(公告)日:1996-09-10

    申请号:US469228

    申请日:1995-06-06

    CPC分类号: G02B26/106 G06K7/10663

    摘要: A holographic grating element is provided which enables tracing different scan lines. The element is divided into a plurality of sectors. A first grating pattern is provided which diffracts a beam in one direction, and a second grating pattern is next to the first and diffracts the scan beam in the reverse direction. Sectors can be produced with different sector sizes to enable scanning at different rates in the reverse direction, or in successive scans in the same direction. Angle relationships are described to produce diffraction patterns for a desired relationship between disc rotation and the angle of the scan line.

    Authentication system for an item having a holographic display using a
holographic record
    24.
    发明授权
    Authentication system for an item having a holographic display using a holographic record 失效
    具有使用全息记录的全息显示的物品的认证系统

    公开(公告)号:US5306899A

    公开(公告)日:1994-04-26

    申请号:US897761

    申请日:1992-06-12

    摘要: In order to improve security for holographic labels which are positioned on a substrate base, a bar code symbol is holographically recorded on the base such as a credit card, a label, or a container for a product. A reading apparatus (e.g., a bar code reader) directs light at the holographic bar code symbol and detects the reflected optical information with a detector such as a CCD array. The reading apparatus can be a stand-alone device or, in the case of a credit card, can be incorporated into a conventional swiper for reading magnetic information on a strip on the card. A non-holographic bar code symbol can also be provided on or near a holographic display element, e.g., a rainbow hologram. The bar code can be positioned adjacent the display, or placed in a window within the display, or etched or embossed on the display. A system is also provided for authenticating a holographic display on an information card such as a credit card. A display is illuminated and a reflected beam directed at a holographic record which was previously produced from a signal, known to be authentic, and a reference. The reflected beam is used to reconstruct a reference beam. A sensor receives the reconstructed reference and it is then determined if the display is authentic.

    摘要翻译: 为了提高定位在基板基底上的全息标签的安全性,将条形码符号全息地记录在基座上,例如信用卡,标签或产品的容器。 读取装置(例如,条形码阅读器)将光引导到全息条形码符号,并用诸如CCD阵列的检测器检测反射的光学信息。 读取装置可以是独立装置,或者在信用卡的情况下,可以并入到用于读取卡上的条带上的磁信息的常规的卡片中。 也可以在全息显示元件上或附近提供非全息条形码符号,例如彩虹全息图。 条形码可以定位在显示器附近,或者放置在显示器内的窗口中,或者蚀刻或压印在显示器上。 还提供了一种用于在诸如信用卡的信息卡上认证全息显示的系统。 照明的显示器和指向全息记录的反射光束,其先前由已知是真实的信号产生,并且是参考。 反射光束用于重构参考光束。 传感器接收重建的参考,然后确定显示器是否可信。

    Bar code acquisition utilizing moire patterns
    25.
    发明授权
    Bar code acquisition utilizing moire patterns 失效
    使用莫尔图案的条形码采集

    公开(公告)号:US5196683A

    公开(公告)日:1993-03-23

    申请号:US681601

    申请日:1991-04-08

    IPC分类号: G06K9/74

    CPC分类号: G06K9/74

    摘要: A bar code detector or acquisition arrangement for detecting the presence and location of a bar code pattern in a field of view. The bar code pattern detector is not designed to decode a bar code pattern, but merely to be sensitive to and detect the presence of a bar code pattern or patterns so that a conventional bar code scanner can then be activated to perform a decoding operation thereon. The present invention is based upon the generation of Moire patterns, and includes an electro-optic system for detecting and locating a bar code pattern in which an image of a field of view is projected onto a reference bar code pattern or an image thereof while producing relative rotation between the image of the field of view and the reference bar code pattern or image thereof. An optical detector detects the optical interaction of the image of the field of view with the reference bar code pattern or image thereof, including any Moire patterns generated thereby. A processor is coupled to the output of the optical detector for detecting the generation of any such Moire patterns, which are indicative of the presence and location of a bar code pattern or patterns in the field of view.

    摘要翻译: 一种条形码检测器或采集装置,用于检测视场中条形码图案的存在和位置。 条形码图案检测器不被设计为对条形码图案进行解码,而仅仅是对条形码图案或图案的敏感性和检测条件图案或图案的存在,从而可以激活传统的条形码扫描器来对其进行解码操作。 本发明基于莫尔图案的产生,并且包括用于检测和定位条形码图案的电光系统,其中将视野的图像投影到参考条形码图案或其图像上,同时产生 视场图像与参考条码图案或其图像之间的相对旋转。 光学检测器检测视场图像与参考条形码图案或其图像的光学相互作用,包括由此产生的任何莫尔图案。 处理器耦合到光学检测器的输出,用于检测任何这样的莫尔图案的产生,这些莫尔图案指示条形码图案或图案在视野中的存在和位置。

    Laser scanners with extended working range
    26.
    发明授权
    Laser scanners with extended working range 失效
    激光扫描仪具有延长的工作范围

    公开(公告)号:US5080456A

    公开(公告)日:1992-01-14

    申请号:US486005

    申请日:1990-02-26

    IPC分类号: G02B5/00 G02B26/10 G06K7/10

    摘要: A bar code scanner is disclosed employing a laser source and scan mirror for generating a light beam for scanning a bar code symbol or the like. The working range for distance between the scanner and the symbol is extended by placing an optical element in the path between the laser source and the scan mirror. This optical element may be a figure of rotation such as an axicon. A slit may be positioned downstream of the axicon to block the characteristic concentric rings produced in the beam in areas perpendicular to the scan line.

    摘要翻译: 公开了一种使用激光源和扫描镜来产生用于扫描条形码符号等的光束的条形码扫描器。 通过将光学元件放置在激光源和扫描镜之间的路径中来延长扫描仪和符号之间距离的工作范围。 该光学元件可以是旋转像,例如旋转三棱镜。 狭缝可以位于旋转三棱镜的下游,以阻挡垂直于扫描线的区域中的光束中产生的特征同心圆。

    OPTICAL MASK FOR ALL-OPTICAL EXTENDED DEPTH-OF-FIELD FOR IMAGING SYSTEMS UNDER INCOHERENT ILLUMINATION
    27.
    发明申请
    OPTICAL MASK FOR ALL-OPTICAL EXTENDED DEPTH-OF-FIELD FOR IMAGING SYSTEMS UNDER INCOHERENT ILLUMINATION 有权
    用于无光照射下成像系统全光学扩展深度的光学掩模

    公开(公告)号:US20110197428A1

    公开(公告)日:2011-08-18

    申请号:US13027286

    申请日:2011-02-15

    IPC分类号: B23P11/00

    摘要: A method of optical element manufacturing, the method may include selecting a range of a misfocus parameter ψ; and designing the optical element to comprise multiple regions, wherein the optical transfer function (OTF) of the optical element allows, for the range of the misfocus parameter ψ, transmission of images with a contrast of at least 10% for all normalized spatial frequencies up to 50% of a theoretical maximum that is attainable with a full aperture in an in-focus condition.

    摘要翻译: 一种光学元件制造方法,该方法可以包括选择误聚焦参数ψ的范围; 并且将光学元件设计成包括多个区域,其中光学元件的光学传递函数(OTF)允许在误聚焦参数ψ的范围内,对于所有归一化的空间频率上升至少10%的对比度的图像的传输 到理论最大值的50%,其可以在对焦条件下用全孔径来获得。

    Phase extraction in optical processing
    28.
    发明授权
    Phase extraction in optical processing 失效
    光学加工中的相位提取

    公开(公告)号:US07515753B2

    公开(公告)日:2009-04-07

    申请号:US11470800

    申请日:2006-09-07

    IPC分类号: G06K9/66

    CPC分类号: G02B27/46 G06K9/58

    摘要: A method of optical data processing, comprising: providing a first data set to be optically transformed using a transform; combining a reference data set with said first data set to generate coherent light, encoding a combined data set; optically and coherently transforming said light that encodes the combined data set, into coherent light that encodes a transformed combined data set; obtaining a transformed reference data set by determining the effect said optical transform has on light encoding said reference data set; and extracting a second data set that represents a transform of said first data set, from an intensity portion of light encoding said transformed combined data set, using said transformed reference data set to extract a phase of at least one element of said second data set.

    摘要翻译: 一种光学数据处理方法,包括:提供使用变换进行光学变换的第一数据组; 将参考数据组与所述第一数据组组合以产生相干光,对组合数据集进行编码; 将所述编码组合数据集的光光学地和相干地变换成对变换的组合数据集进行编码的相干光; 通过确定所述光学变换对所述参考数据集的光编码具有的影响来获得变换的参考数据集; 以及使用所述变换的参考数据集从所述经变换的组合数据集的光的强度部分中提取表示所述第一数据集的变换的第二数据集,以提取所述第二数据集的至少一个元素的相位。