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    • 1. 发明授权
    • Light wedge for illuminating a platen in a print scanner
    • 用于照亮打印扫描仪中的压板的光楔
    • US07586591B2
    • 2009-09-08
    • US10973898
    • 2004-10-27
    • George W. McClurgDean J. Fedele
    • George W. McClurgDean J. Fedele
    • G06K9/74
    • G06K9/00046G06K9/2036
    • Light wedges that reflect light internally and produce diffuse light for uniformly illuminating a platen in a print scanner are presented. In one example, a light wedge has a first surface that receives light emitted from an illumination source and a second surface that limits specular reflections. The light wedge transmits light from the illumination source toward the platen, whereby uniform illumination is provided to the platen. In another example, a light wedge has an illumination surface that receives light emitted from the illumination source, a first surface that limits specular reflections, and a second surface that acts as a diffuser. The second surface reflects light out of the light wedge toward the platen, whereby uniform illumination is provided to the platen.
    • 介绍了在内部反射光并产生漫射光以在打印扫描仪中均匀照明压板的光楔。 在一个示例中,光楔具有接收从照明源发射的光的第一表面和限制镜面反射的第二表面。 光楔将光从照明源传递到压板,由此向压板提供均匀的照明。 在另一示例中,光楔具有接收从照明源发射的光的照明表面,限制镜面反射的第一表面和充当扩散器的第二表面。 第二表面将光从光楔反射到压板,由此向压板提供均匀的照明。
    • 5. 发明授权
    • Live print scanner with holographic platen
    • 带全息打印机的实时打印扫描仪
    • US07221489B2
    • 2007-05-22
    • US11209038
    • 2005-08-23
    • John F. CarverGeorge W. McClurg
    • John F. CarverGeorge W. McClurg
    • G03H1/00
    • G06K9/00046
    • This invention relates to the use of holographic optical elements in the design and application of biometric scanning instruments used typically for capturing biometric information such as fingerprints and handprints. A live print scanning system for generating a high contrast print image is presented. The system includes a flatbed scanner with a scanning surface and an image sensor, a holographic platen placed on the scanning surface, and a reference beam source that provides a reference beam to the holographic platen. A high contrast print image of a biometric object that is placed on the holographic platen is obtained at the image sensor. A method for generating a high contrast print image is also presented.
    • 本发明涉及全息光学元件在设计和应用生物测定扫描仪器中的应用,通常用于捕获诸如指纹和手印的生物特征信息。 提出了一种用于产生高对比度打印图像的实时打印扫描系统。 该系统包括具有扫描表面的平板扫描器和图像传感器,放置在扫描表面上的全息压板以及向全息压板提供参考光束的参考光束源。 在图像传感器处获得放置在全息压板上的生物体对象的高对比度印刷图像。 还提供了用于产生高对比度打印图像的方法。
    • 6. 发明授权
    • Live print scanner with holographic imaging a different magnifications
    • 实时打印扫描仪与全息成像不同的放大倍率
    • US07180643B2
    • 2007-02-20
    • US11209037
    • 2005-08-23
    • John F. CarverGeorge W. McClurg
    • John F. CarverGeorge W. McClurg
    • G03H1/00
    • G06K9/76G02B5/1876G02B5/32G03H1/0408G06K9/00046
    • This invention relates to the use of holographic optical elements in the design and application of biometric scanning instruments used typically for capturing biometric information such as fingerprints and handprints. A system and method for capturing print images from select areas of a platen are presented. The system includes a reference beam source that provides a reference beam, holographic material that receives the reference beam, a platen on a surface of the holographic material that receives a biometric object, and an image sensor. Variations in orientation of the reference beam cause differing areas of the platen to be mapped onto the image sensor, thereby obtaining both different image translations and magnifications of at least a portion of the biometric object.
    • 本发明涉及全息光学元件在设计和应用生物测定扫描仪器中的应用,通常用于捕获诸如指纹和手印的生物特征信息。 提出了一种用于从压板的选定区域捕获打印图像的系统和方法。 该系统包括提供参考光束的参考光束源,接收参考光束的全息材料,接收生物测定对象的全息材料的表面上的压板和图像传感器。 参考光束的取向的变化使得压板的不同区域被映射到图像传感器上,从而获得生物特征对象的至少一部分的不同图像平移和放大率。
    • 10. 发明授权
    • System and method for biometric image capturing
    • 用于生物识别图像捕获的系统和方法
    • US06872916B2
    • 2005-03-29
    • US10235665
    • 2002-09-06
    • John F. CarverGeorge W. McClurgJoseph F. Arnold
    • John F. CarverGeorge W. McClurgJoseph F. Arnold
    • G06T1/00G06K9/00H04N1/028H05B3/24
    • H05B3/24G06K9/00013
    • Biometric object image capturing systems and methods prevent undesirable interruptions of total internal reflection of a prism that result in improper biometric images. A thermal assembly comprising a plurality of thermal elements is placed adjacent to the image capturing device. The thermal elements upon supply of a current are capable of either heating or cooling the image capturing device or a platen of the image capturing device. If cooling of the biometric object receiving surface is required, the thermal elements can be controlled to decrease temperature of an area where a biometric object is placed, or an area adjacent to where the biometric object is placed. If heating of the biometric object receiving surface is required, the thermal elements can be controlled to increase temperature of an area where a biometric object is placed, or an area adjacent to where the biometric object is placed, to remove and prevent accumulation of moisture.
    • 生物特征对象图像捕获系统和方法防止导致不正确的生物特征图像的棱镜的全内反射的不期望的中断。 包括多个热元件的热​​组件被放置成与图像捕获装置相邻。 供电时的热元件能够对图像捕获装置或图像捕获装置的压板进行加热或冷却。 如果需要生物体接收表面的冷却,则可以控制热元件以降低放置生物体的区域的温度,或与放置生物体对象的区域相邻的区域。 如果需要加热生物体接收表面,则可以控制热元件以增加放置生物体的区域或邻近生物特征物体的区域的温度,以去除并防止水分积聚。