Document illuminator with surface lens
    3.
    发明授权
    Document illuminator with surface lens 有权
    具有表面透镜的文档照明器

    公开(公告)号:US07760434B2

    公开(公告)日:2010-07-20

    申请号:US11513742

    申请日:2006-08-31

    IPC分类号: G02B27/10

    摘要: A scanning apparatus includes an illuminator for illuminating a portion of a document to be scanned. The illuminator includes an array of discrete light sources and an optical element. The optical element includes a light-transmissive material and defines a focusing portion and an angular modification portion. The angular modification portion tends to reduce specular flare by modifying the angular distribution of light from the light sources which are within the acceptance angle of a lens arrangement which focuses light from the document onto a sensor.

    摘要翻译: 扫描装置包括用于照亮待扫描文件的一部分的照明器。 照明器包括离散光源阵列和光学元件。 光学元件包括透光材料并且限定聚焦部分和角度修改部分。 角修改部分倾向于通过修改来自光源的光的角度分布来减少镜面光斑,所述角度分布在将光从文档聚焦到传感器上的透镜装置的接受角度内。

    Double gauss lens for a raster input scanner
    4.
    发明授权
    Double gauss lens for a raster input scanner 失效
    用于光栅输入扫描仪的双高斯镜头

    公开(公告)号:US4863251A

    公开(公告)日:1989-09-05

    申请号:US25755

    申请日:1987-03-13

    CPC分类号: H04N1/193 G02B13/24 G02B26/10

    摘要: A double Gauss reduction lens is optimized for projecting line images from an object plane onto a photosensor array. The six elements, four-component lens has a numeral focal length of 550 mm, a field of view of 17.degree. at the numeral 550 mm overall object to image conjugate length and a magnification of 0.1102. The lens is characterized by a high modulation transfer fequency, large depth of focus and low distortion.

    摘要翻译: 优化双高斯减速透镜,用于将物镜平面上的线图像投影到光传感器阵列上。 六个元件的四分量透镜的数字焦距为550mm,视角为17°,总体对象为550mm,图像共轭长度为0.1102。 透镜的特征在于高调制传输频率,大的聚焦深度和低失真。

    Document illuminator with stepped optical element
    5.
    发明授权
    Document illuminator with stepped optical element 失效
    具有阶梯光学元件的文档照明器

    公开(公告)号:US07467879B2

    公开(公告)日:2008-12-23

    申请号:US11409137

    申请日:2006-04-21

    IPC分类号: F21V7/00

    摘要: An apparatus for scanning a document comprises a platen for supporting at least a portion of the document; a light source; and an optical element for directing light from the light source to the platen. The optical element defines a plurality of small planar surfaces, the small planar surfaces being arranged in a linear array. Light emanating from a source is reflected from one of the small planar surfaces and emerges substantially perpendicular to an exit surface.

    摘要翻译: 用于扫描文件的装置包括用于支撑文件的至少一部分的压板; 光源; 以及用于将来自光源的光引导到压板的光学元件。 光学元件限定多个小平面,小平面被布置成线性阵列。 从源极发出的光从小平面之一反射并基本上垂直于出射表面出射。

    Method and apparatus for eliminating lamp strobing in a digital input scanner

    公开(公告)号:US07042600B2

    公开(公告)日:2006-05-09

    申请号:US10040718

    申请日:2002-01-07

    IPC分类号: H04N1/04

    CPC分类号: H04N1/047 H04N1/02815

    摘要: A method of eliminating strobing in successive scan lines of an image includes determining a nominal scan line time and an associated scan line integration time for the image sensor. A nominal illumination light source output period is determined for the illumination source. In order to ensure that the scan line integration time is equivalent to an integer number of illumination source light output periods, at least one of the nominal scan line integration time and the nominal illumination source light output period is adjusted. A clock signal, derived from the pixel clock, drives both the frequency circuitry of the lamp drive circuit and the integration time of the image sensor. The present method provides a reliable means for eliminating lamp strobing independent of the relative phasing of the lamp oscillation phase with respect to the start of each scan line integration.

    Method and system for designing color corrected optical systems
    7.
    发明授权
    Method and system for designing color corrected optical systems 失效
    设计色彩校正光学系统的方法和系统

    公开(公告)号:US5526185A

    公开(公告)日:1996-06-11

    申请号:US253478

    申请日:1994-06-03

    摘要: The present invention provides a general system and method for designing arbitrary lens systems with reduced chromatic aberration without the reliance on rigorous trial and error methods and/or approximations. The system and method selects optical materials for a color corrected optical system by generating both axial color terms and lateral color terms for a predetermined lens system. From the generated color terms, a plurality of glass terms are calculated from a plurality or linear algebraic formulas generated by a multiplication of two matrices using the generated axial and lateral color terms as coefficient values of one of the matrices or other computational method. From the calculations, the particular optical materials and the predetermined lens design for a color corrected optical system are identified. This information can be used to facilitate the manufacturing of a lens system. The present invention can also take into account the use of diffractive optical elements.

    摘要翻译: 本发明提供了一种用于在不依赖于严格的试错法和/或近似的情况下设计具有降低的色差的任意透镜系统的一般系统和方法。 该系统和方法通过产生用于预定透镜系统的轴向色彩项和侧向颜色项来选择用于色彩校正的光学系统的光学材料。 根据生成的颜色项,使用生成的轴向和横向颜色项作为矩阵之一或其他计算方法的系数值,通过由两个矩阵的乘法生成的多个或线性代数公式来计算多个玻璃项。 从计算中,识别用于色彩校正的光学系统的特定光学材料和预定透镜设计。 该信息可用于促进透镜系统的制造。 本发明还可以考虑衍射光学元件的使用。

    Holographic scanning system utilizing a scan linearization lens
    8.
    发明授权
    Holographic scanning system utilizing a scan linearization lens 失效
    全息扫描系统利用扫描线性化透镜

    公开(公告)号:US4508421A

    公开(公告)日:1985-04-02

    申请号:US517610

    申请日:1983-07-27

    CPC分类号: G02B26/106

    摘要: An optical scanning system utilizing a spinner component having plane diffraction gratings thereon and a focusing lens adapted to compensate for linearization errors at the recording plane. The lens includes optical elements which compensate for the 3rd and 5th order coefficients of distortion associated with this type of diffraction scanning component.

    摘要翻译: 使用其上具有平面衍射光栅的旋转器部件和适于补偿记录平面处的线性化误差的聚焦透镜的光学扫描系统。 透镜包括补偿与这种类型的衍射扫描部件相关的第三和第五阶失真系数的光学元件。

    Document illuminator
    9.
    发明授权
    Document illuminator 有权
    文件照明器

    公开(公告)号:US07755811B2

    公开(公告)日:2010-07-13

    申请号:US11169717

    申请日:2005-06-30

    IPC分类号: H04N1/04

    CPC分类号: G02B6/0021 G02B6/0018

    摘要: A document illuminator includes a light-transmissive element having an embedded source of illumination fitted in a cavity formed therein. The light-transmissive element preferably has one or more optical notches and preferably is encased in an opaque surround to promote total internal reflection of the light rays emanating from the LED. The one or more optical notches may include a dual-V notch or an elliptical notch. The reflected light rays are collected at an aperture which in turn transmit light at high power and highly uniform illumination profile to illuminate a document.

    摘要翻译: 文件照明器包括具有嵌入在其中形成的空腔中的嵌入式照明源的透光元件。 透光元件优选地具有一个或多个光学凹口,并且优选地被包围在不透明环境中以促进从LED发出的光线的全内反射。 一个或多个光学凹口可以包括双V凹口或椭圆形凹口。 反射的光线被收集在孔口处,孔口又以高功率传输光并且高度均匀的照明轮廓以照射文件。