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74 条记录 (耗时 0.093 秒)

    Planar LED-based illumination array (PLIA) chips
    46.
    发明授权
    Planar LED-based illumination array (PLIA) chips 失效
    平面LED基照明阵列（PLIA）芯片

    公开(公告)号：US06959870B2

    公开(公告)日：2005-11-01

    申请号：US10067140

    申请日：2002-02-04

    申请人： Constantine J. Tsikos ,  Timothy A. Good ,  Thomas Amundsen ,  C. Harry Knowles

    发明人： Constantine J. Tsikos ,  Timothy A. Good ,  Thomas Amundsen ,  C. Harry Knowles

    IPC分类号： G02B26/10 ,  G02B27/48 ,  G06K7/10 ,  G06K7/14 ,  H01S5/022 ,  H01S5/40

    CPC分类号： G02B19/0066 ,  B82Y15/00 ,  G02B19/0014 ,  G02B19/0028 ,  G02B19/0057 ,  G02B19/009 ,  G02B26/10 ,  G02B26/105 ,  G02B27/0961 ,  G02B27/0966 ,  G02B27/48 ,  G06K7/10554 ,  G06K7/10683 ,  G06K7/10722 ,  G06K7/10732 ,  G06K7/10811 ,  G06K7/10861 ,  H01S5/02248 ,  H01S5/4025

    摘要： Methods of and systems for illuminating objects using planar laser illumination beams having substantially-planar spatial distribution characteristics that extend through the field of view (FOV) of image formation and detection modules employed in such systems. Each planar laser illumination beam is produced from a planar laser illumination beam array (PLIA) comprising an plurality of planar laser illumination modules (PLIMs). Each PLIM comprises a visible laser diode (VLD, a focusing lens, and a cylindrical optical element arranged therewith. The individual planar laser illumination beam components produced from each PLIM are optically combined to produce a composite substantially planar laser illumination beam having substantially uniform power density characteristics over the entire spatial extend thereof and thus the working range of the system. Preferably, each planar laser illumination beam component is focused so that the minimum beam width thereof occurs at a point or plane which is the farthest or maximum object distance at which the system is designed to acquire images, thereby compensating for decreases in the power density of the incident planar laser illumination beam due to the fact that the width of the planar laser illumination beam increases in length for increasing object distances away from the imaging optics. Advanced high-resolution wavefront control methods and devices are disclosed for use with the PLIIM-based systems in order to reduce the power of speckle-noise patterns observed at the image detections thereof. By virtue of the present invention, it is now possible to use both VLDs and high-speed CCD-type image detectors in conveyor, hand-held and hold-under type imaging applications alike, enjoying the advantages and benefits that each such technology has to offer, while avoiding the shortcomings and drawbacks hitherto associated therewith.

    摘要翻译： 使用具有基本上平面的空间分布特性的平面激光照明光束照射物体的方法和系统，其延伸通过图像形成的视野（FOV）和在这种系统中使用的检测模块。 每个平面激光照明光束由包括多个平面激光照射模块（PLIM）的平面激光照射束阵列（PLIA）产生。 每个PLIM包括可见激光二极管（VLD，聚焦透镜和与其配置的圆柱形光学元件），由每个PLIM产生的各个平面激光照明光束分量被光学组合以产生具有基本上均匀功率密度的复合基本上平面的激光照明光束 优选地，每个平面激光照射光束分量被聚焦，使得其最小光束宽度发生在最远或最大物体距离的点或平面处，在该点或平面处， 系统被设计成获取图像，从而补偿入射的平面激光照射光束的功率密度的降低，这是由于平面激光照射光束的宽度在增加物镜距离成像光学元件的长度上增加的事实，高级高 公开了分辨率波前控制方法和装置 与基于PLIIM的系统一起使用，以便减少在其图像检测时观察到的斑点噪声模式的功率。 凭借本发明，现在可以在输送机，手持和保持型成像应用中同时使用VLD和高速CCD型图像检测器，享受每种这样的技术具有的优点和益处 提供，同时避免迄今为止的缺点和缺点。

    Illumination apparatus with polarizing elements for beam shaping
    47.
    发明授权
    Illumination apparatus with polarizing elements for beam shaping 失效
    具有用于光束成形的偏振元件的照明装置

    公开(公告)号：US06975456B2

    公开(公告)日：2005-12-13

    申请号：US10746313

    申请日：2003-12-24

    申请人： Patrick A. Giordano ,  Thomas Amundsen ,  Timothy A. Good

    发明人： Patrick A. Giordano ,  Thomas Amundsen ,  Timothy A. Good

    IPC分类号： G02B27/28 ,  G06K7/10 ,  G02B5/30

    CPC分类号： G02B27/28 ,  G02B27/286 ,  G06K7/10683 ,  G06K7/10702 ,  Y10S359/90

    摘要： Illumination apparatus includes a light source which directs a polarized source beam in a downstream direction along an optical axis and desirably focuses the beam. A polarization-altering element downstream from the source such as a birefringent plate alters the polarization in a portion or portions of the source beam, so that the altered beam includes portions having different polarization directions. The altered beam passes downstream through a polarization-selective filter. The output beam from the polarization-selective filter can include either portion depending on the orientation of the filter. The arrangement can be used to provide a spot of a given size and shape at the focal location in a scanner such as a bar code scanner. The size and depth of field of the spot can be varied dynamically during operation.

    摘要翻译： 照明装置包括沿着光轴沿着下游方向引导偏振光源光束并且期望聚焦光束的光源。 来自诸如双折射板的源极的偏振改变元件改变源光束的一部分或部分中的偏振，使得改变的光束包括具有不同偏振方向的部分。 改变的光束通过偏振选择滤光器向下游传播。 来自偏振选择滤光器的输出光束可以包括取决于滤光器的取向的任一部分。 该装置可用于在诸如条形码扫描仪的扫描仪中的焦点位置处提供给定尺寸和形状的斑点。 斑点的大小和深度可以在运行过程中动态变化。

    Led-based planar light illumination beam generation module employing a focal lens for reducing the image size of the light emmiting surface of the led prior to beam collimation and planarization
    48.
    发明授权
    Led-based planar light illumination beam generation module employing a focal lens for reducing the image size of the light emmiting surface of the led prior to beam collimation and planarization 失效

    公开(公告)号：US06732929B2

    公开(公告)日：2004-05-11

    申请号：US10066547

    申请日：2002-02-01

    申请人： Timothy A. Good ,  Thomas Amundsen ,  C. Harry Knowles

    发明人： Timothy A. Good ,  Thomas Amundsen ,  C. Harry Knowles

    IPC分类号： G06K710

    CPC分类号： G06K7/10742

    摘要： Methods of and systems for illuminating objects using planar laser illumination beams having substantially-planar spatial distribution characteristics that extend through the field of view (FOV) of image formation and detection modules employed in such systems. Each planar laser illumination beam is produced from a planar laser illumination beam array (PLIA) comprising an plurality of planar laser illumination modules (PLIMs). Each PLIM comprises a visible laser diode (VLD, a focusing lens, and a cylindrical optical element arranged therewith. The individual planar laser illumination beam components produced from each PLIM are optically combined to produce a composite substantially planar laser illumination beam having substantially uniform power density characteristics over the entire spatial extend thereof and thus the working range of the system. Preferably, each planar laser illumination beam component is focused so that the minimum beam width thereof occurs at a point or plane which is the farthest or maximum object distance at which the system is designed to acquire images, thereby compensating for decreases in the power density of the incident planar laser illumination beam due to the fact that the width of the planar laser illumination beam increases in length for increasing object distances away from the imaging optics. Advanced high-resolution wavefront control methods and devices are disclosed for use with the PLIIM-based systems in order to reduce the power of speckle-noise patterns observed at the image detections thereof. By virtue of the present invention, it is now possible to use both VLDs and high-speed CCD-type image detectors in conveyor, hand-held and hold-under type imaging applications alike, enjoying the advantages and benefits that each such technology has to offer, while avoiding the shortcomings and drawbacks hitherto associated therewith.

    Illumination apparatus with polarizing elements for beam shaping
    49.
    发明授权
    Illumination apparatus with polarizing elements for beam shaping 失效
    具有用于光束成形的偏振元件的照明装置

    公开(公告)号：US06714351B2

    公开(公告)日：2004-03-30

    申请号：US09750374

    申请日：2000-12-28

    申请人： Patrick A. Giordano ,  Thomas Amundsen ,  Timothy A. Good

    发明人： Patrick A. Giordano ,  Thomas Amundsen ,  Timothy A. Good

    IPC分类号： G02B530

    CPC分类号： G02B27/28 ,  G02B27/286 ,  G06K7/10683 ,  G06K7/10702 ,  Y10S359/90

    摘要： Illumination apparatus includes a light source which directs a polarized source beam in a downstream direction along an optical axis and desirably focuses the beam. A polarization-altering element downstream from the source alters the polarization in a portion or portions of the source beam, so that the altered beam includes portions having different polarization directions. The altered beam passes downstream through a polarization-selective filter. The output beam from the polarization-selective filter can include either portion depending on the orientation of the filter. The arrangement can be used to provide a spot of a given size and shape at the focal location in a scanner such as a bar code scanner. The size and depth of field of the spot can be varied dynamically during operation.

    摘要翻译： 照明装置包括沿着光轴沿着下游方向引导偏振光源光束并且期望聚焦光束的光源。 源极下游的偏振变化元件改变源光束的一部分或部分中的偏振，使得改变的光束包括具有不同偏振方向的部分。 改变的光束通过偏振选择滤光器向下游传播。 来自偏振选择滤光器的输出光束可以包括取决于滤光器的取向的任一部分。 该装置可用于在诸如条形码扫描仪的扫描仪中的焦点位置处提供给定尺寸和形状的斑点。 斑点的大小和深度可以在运行过程中动态变化。

    Method of scanning information-bearing elements
    50.
    发明授权
    Method of scanning information-bearing elements 有权
    扫描信息载体元素的方法

    公开(公告)号：US06791727B2

    公开(公告)日：2004-09-14

    申请号：US10746312

    申请日：2003-12-24

    申请人： Patrick A. Giordano ,  Thomas Amundsen ,  Timothy A. Good

    发明人： Patrick A. Giordano ,  Thomas Amundsen ,  Timothy A. Good

    IPC分类号： G02B2608

    CPC分类号： G02B27/28 ,  G02B27/286 ,  G06K7/10683 ,  G06K7/10702 ,  Y10S359/90

    摘要： Method of scanning information-bearing elements by providing a scanning beam focused to a spot at a focal location, moving said scanning beam relative to information-bearing elements, detecting light reflected from said information-bearing elements to provide a signal representing the information carried by such element, and repeatedly varying the spot size and depth of field of the focused beam during said moving and detecting steps so as to vary the beam characteristics between a first condition in which the beam has a small spot size at said focus but a small depth of field and a second condition in which the beam has a larger spot size at said focus but a larger depth of field.

    摘要翻译： 通过提供聚焦在焦点位置处的光点的扫描光束扫描信息承载元件的方法，使所述扫描光束相对于信息承载元件移动，检测从所述信息承载元件反射的光，以提供表示由信息承载元件承载的信息的信号 并且在所述移动和检测步骤期间重复地改变聚焦光束的光斑尺寸和景深，以便在第一条件和第二条件之间改变光束特性，其中光束在所述焦点处具有小斑点尺寸，但是具有小的深度 的场和第二条件，其中光束在所述焦点处具有较大的光点尺寸，但是具有较大的景深。