Bar code scanner utilizing multiple light beams output by a light beam splitter
    31.
    发明授权
    Bar code scanner utilizing multiple light beams output by a light beam splitter 有权
    条形码扫描器利用由光束分离器输出的多个光束

    公开(公告)号:US06247648B1

    公开(公告)日:2001-06-19

    申请号:US09301633

    申请日:1999-04-29

    IPC分类号: G06K710

    CPC分类号: G06K7/10831

    摘要: A bar code scanner and method for scanning a bar code symbol that splits a light beam using a liquid crystal device and directs the split light beams toward a bar code symbol using a moveable mirror. The light reflected by the symbol from each of the split light beams is summed and converted to an electrical signal indicative of the bar code symbol. The electrical signal is processed to decode the bar code symbol, but, if decoding is unsuccessful, the liquid crystal device is changed to affect the number of split light beams incident on the bar code symbol.

    摘要翻译: 一种条形码扫描器和方法,用于扫描使用液晶装置分割光束的条形码符号,并使用可移动反射镜将分束光束引向条形码符号。 从每个分束光束的符号反射的光被相加并转换成指示条形码符号的电信号。 处理电信号以解码条形码符号,但是如果解码不成功,则改变液晶装置以影响入射在条形码符号上的分束光束的数量。

    Bar code scanner with simplified auto-focus capablilty
    32.
    发明授权
    Bar code scanner with simplified auto-focus capablilty 失效
    条码扫描器,具有简化的自动对焦功能

    公开(公告)号:US5920060A

    公开(公告)日:1999-07-06

    申请号:US135739

    申请日:1998-08-18

    申请人: Emanuel Marom

    发明人: Emanuel Marom

    IPC分类号: G06K7/10

    摘要: A bar code scanner for reading a bar code tag includes a collection optical system, a two dimensional array of detectors, rotating means for imparting rotational movement to the array and displacement means for varying the position of one of the collection optical system and the array along an optical axis of the collection optical system.

    摘要翻译: 用于读取条形码标签的条形码扫描器包括收集光学系统,检测器的二维阵列,用于向阵列施加旋转运动的旋转装置和用于改变收集光学系统和阵列之一的位置的位移装置 收集光学系统的光轴。

    Barcode scanner using an array of light emitting elements which are
selectively activated
    34.
    发明授权
    Barcode scanner using an array of light emitting elements which are selectively activated 失效
    条形码扫描器,其使用选择性地激活的发光元件阵列

    公开(公告)号:US5545886A

    公开(公告)日:1996-08-13

    申请号:US98991

    申请日:1993-07-29

    IPC分类号: G06K7/10 G06K7/14

    摘要: A bar code scanner employs an electronic means for causing the light beam to scan a bar code symbol, rather than using a mechanical device to generate the scan. A linear array of light sources, activated one at a time in a regular sequence, may be imaged upon the bar code symbol to simulate a scanned beam. Instead of a single linear array of light sources, a multiple-line array may be employed, producing multiple scan lines. The multiple scan lines may be activated in sequence, or activated simultaneously (time-division or frequency-division multiplexed. The multiple scan lines can provide signal enhancement, noise reduction or fault correction if directed to the same bar code pattern. Multiple scan lines may be generated using a single light source and a beam splitter, with mechanical scanning, as well as by the sequentially-activated light sources. Multiple simultaneous scan lines may be employed to generate a raster scan at lower mechanical scan frequency. In another embodiment, a tunable laser may be employed to provide a scan without moving parts; a laser beam from the tunable laser is reflected from a diffraction grating that produces an angular deviation dependent upon the wavelength of the laser output. As the frequency of the tunable laser is varied in some selected pattern, the laser beam will scan accordingly.

    摘要翻译: 条形码扫描仪采用电子装置,用于使光束扫描条形码符号,而不是使用机械装置来产生扫描。 可以在条形码符号上成像一个以规则顺序一次激活的光源的线性阵列,以模拟扫描光束。 代替光源的单个线性阵列,可以采用多行阵列,产生多条扫描线。 多个扫描线可以被顺序激活或同时激活(时分或频分复用,多个扫描线可以提供信号增强,降噪或故障校正,如果指向相同的条形码图案,多个扫描线可以 使用单个光源和分束器,通过机械扫描以及由顺序激活的光源产生多个同时扫描线可以以较低的机械扫描频率产生光栅扫描,在另一个实施例中, 可调谐激光器可用于提供无移动部件的扫描;来自可调谐激光器的激光束从衍射光栅反射,该衍射光栅产生取决于激光输出波长的角度偏差,因为可调激光器的频率在 一些选定的图案,激光束将相应扫描。

    Apparatus for high speed analysis of two-dimensional images
    35.
    发明授权
    Apparatus for high speed analysis of two-dimensional images 失效
    二维图像高速分析装置

    公开(公告)号:US4707859A

    公开(公告)日:1987-11-17

    申请号:US809539

    申请日:1985-12-16

    IPC分类号: G06T1/20 G06K9/60

    CPC分类号: G06T1/20

    摘要: Apparatus is disclosed for high-speed processing of a two-dimensional image using Cellular Array Processors arranged as parallel modules in a multi-level matrix. An array of photosensors is used to provide image intensity signals for each image pixel. Comparator and memory modules are used to convert the sensor signals to digital form using parallel processing techniques.

    摘要翻译: 公开了使用在多级矩阵中排列为并行模块的蜂窝阵列处理器来高速处理二维图像的装置。 使用一组光电传感器来为每个图像像素提供图像强度信号。 比较器和存储器模块用于使用并行处理技术将传感器信号转换为数字形式。

    Method and apparatus for image subtraction in order to extract
non-common information from two light images
    36.
    发明授权
    Method and apparatus for image subtraction in order to extract non-common information from two light images 失效
    用于图像减法的方法和装置,以便从两个光图像提取非共同信息

    公开(公告)号:US4392155A

    公开(公告)日:1983-07-05

    申请号:US216009

    申请日:1980-12-12

    IPC分类号: H04N7/18

    CPC分类号: H04N7/18

    摘要: Apparatus for image subtraction in order to extract non-common information from two light images comprises a TV camera tube including a photosensitive coating on its inner face and a grating on its outer face spaced from the photosensitive coating by the thickness of the tube; projectors for projecting the two light images simultaneously, from slightly different angles, onto the photosensitive coating via the grating such that the shadow of the grating interlaces the two light images on the photosensitive coating; and a scanner for electronically scanning the interlaced images on the photosensitive coating to produce a video output, and for processing same to select only the image information which is non-common to the two optical images.

    摘要翻译: 用于从两个光图像中提取非共同信息的用于图像减法的装置包括电视摄像机管,其内表面具有感光涂层,其外表面上的光栅与感光涂层间隔了管的厚度; 用于将两个光图像从稍微不同的角度同时投射到通过光栅的感光涂层上,使得光栅的阴影将两个光图像交织在感光涂层上; 以及用于电子扫描感光涂层上的隔行扫描图像以产生视频输出的扫描器,并且用于对其进行处理以仅选择两个光学图像不共同的图像信息。

    Optical imaging system with an extended depth-of-field and method for designing an optical imaging system
    37.
    发明授权
    Optical imaging system with an extended depth-of-field and method for designing an optical imaging system 有权
    具有扩展景深的光学成像系统和用于设计光学成像系统的方法

    公开(公告)号:US08576323B2

    公开(公告)日:2013-11-05

    申请号:US12581191

    申请日:2009-10-19

    IPC分类号: H04N5/225 H04N5/228

    CPC分类号: G02B27/0075

    摘要: A method for designing a mask, the method includes: choosing or receiving a desired contrast value; and determining sizes, locations and shapes of multiple rotationally symmetric regions of a mask such as to define a modulation transfer function that is characterized by a substantially uniform response over a spatial frequency range; wherein the uniform response is substantially indifferent to an orientation of features of the object and to a location of the object within a deep depth-of-field region. An optical imaging system that includes: a mask that includes multiple rotationally regions; wherein the multiple rotationally symmetric regions are shaped and positioned such as to define a modulation transfer function that is characterized by a substantially uniform response over a spatial frequency range, wherein the uniform response is substantially indifferent to an orientation of features of the object and to a location of the object within a deep depth-of-field region.

    摘要翻译: 一种用于设计掩模的方法,所述方法包括:选择或接收期望的对比度值; 以及确定掩模的多个旋转对称区域的尺寸,位置和形状,以便限定特征在于在空间频率范围上基本均匀的响应的调制传递函数; 其中所述均匀响应对于所述物体的特征的方向和所述物体在深深度景深区域内的位置基本上无关。 一种光学成像系统,包括:掩模,其包括多个旋转区域; 其中所述多个旋转对称区域被成形和定位,以便限定调制传递函数,所述调制传递函数的特征在于空间频率范围上的基本均匀的响应,其中所述均匀响应基本上与所述对象的特征的取向无关, 物体在深深的景深区域内的位置。

    Optical mask for all-optical extended depth-of-field for imaging systems under incoherent illumination
    38.
    发明申请
    Optical mask for all-optical extended depth-of-field for imaging systems under incoherent illumination 审中-公开
    用于非相干照明下成像系统的全光学扩展景深的光学掩模

    公开(公告)号:US20060204861A1

    公开(公告)日:2006-09-14

    申请号:US11078294

    申请日:2005-03-14

    摘要: A mask for enhancing the depth of focus of an optical imaging system is designed by optimizing an optical property (transmittance or reflectance) of the mask relative to the intensity distribution in the system's image plane. Preferably, a desired PSF intensity is selected, a desired misfocus parameter range is selected, and the optical property is adjusted to minimize a measure of the departure of the system's PSF intensity, as computed from the mask's optical property, from the desired PSF intensity, over the entire misfocus parameter range. Most preferably, the desired PSF intensity is selected as the inverse Fourier transform of a desired OTF. Preferably, the mask is fabricated as a DOE.

    摘要翻译: 通过优化掩模的相对于系统的图像平面中的强度分布的光学性质(透射率或反射率)来设计用于增强光学成像系统的焦深的掩模。 优选地,选择期望的PSF强度,选择期望的误聚焦参数范围,并且调节光学性质以使从系统的光学性质计算出的系统的PSF强度偏离所期望的PSF强度的度量最小化, 在整个误聚焦参数范围内。 最优选地,期望的PSF强度被选择为所需OTF的傅里叶逆变换。 优选地,掩模被制造为DOE。

    Beam shaping for optical scanners
    39.
    发明授权
    Beam shaping for optical scanners 有权
    光学扫描仪的光束成形

    公开(公告)号:US06633433B2

    公开(公告)日:2003-10-14

    申请号:US09867399

    申请日:2001-05-31

    IPC分类号: G02B2742

    摘要: A beam generator, or beam shaping system, for example for use in an optical scanner, creates a non-Gaussian beam which provides improved indicia-reading characteristics. In one embodiment, diffractive optical elements are used to create a Bessel-Gaussian scanning beam, which comprises a coherent combination of a Gaussian beam and a Bessel beam.

    摘要翻译: 例如用于光学扫描仪的光束发生器或光束成形系统产生提供改进的标记读取特性的非高斯光束。 在一个实施例中,衍射光学元件用于产生贝塞尔 - 高斯扫描光束,其包括高斯光束和贝塞尔光束的相干组合。