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    • 25. 发明授权
    • Beam deflection mechanism
    • 梁偏转机构
    • US4573758A
    • 1986-03-04
    • US615817
    • 1984-05-31
    • Joel HeckerHoward SternThomas Heydenburg
    • Joel HeckerHoward SternThomas Heydenburg
    • G02B26/08G02B26/10G02B5/32
    • G02B26/106G02B26/0875
    • An arrangement for deflecting a beam of monochromatic light in a rapid and accurate manner. To deflect the beam, segments of a number of Fresnel lenses are produced onto a single flat glass substrate disk. The optical axis of each of the lens segments corresponds to the center of rotation of the disk. The disk is mounted on a shaft which is rotatable about that optical axis. The beam of light to be deflected is applied to the surface of the disk at a point off the axis. When the beam passes through the disk it becomes deflected by one of the lens elements. The degree of deflection depends on the nature of the element, and the rate at which the beam is deflected from one orientation to another is determined by the rate of rotation of the disk.
    • 用于以快速和准确的方式偏转单色光束的装置。 为了偏转光束,多个菲涅尔透镜的片段被制造到单个平板玻璃基片盘上。 每个透镜段的光轴对应于盘的旋转中心。 盘安装在可围绕该光轴旋转的轴上。 要偏转的光束在离轴的点处施加到盘的表面。 当光束通过盘片时,其被透镜元件中的一个偏转。 偏转度取决于元件的性质,光束从一个方向偏转到另一个方向的速率由光盘的旋转速度确定。
    • 28. 发明授权
    • Method of operating a charge coupled device in an accelerated mode, and in conjunction with an optical symbology imager
    • 以加速模式操作电荷耦合器件,并结合光学符号系统成像仪的方法
    • US06267294B1
    • 2001-07-31
    • US09151767
    • 1998-09-11
    • Howard SternJohn H. Dowling
    • Howard SternJohn H. Dowling
    • G06K710
    • H04N5/3454G06K7/10722H04N5/23245H04N5/3728
    • A method of operating a charge coupled device in an accelerated mode is provided, and in particular in connection with an optical symbology imager, so as to minimize variations in the position of the imager relative to the code. The CCD has two horizontal shift registers, each receiving every other scan line so that the output of each horizontal shift register equals the number of scan lines for normal television signals 262. The method skips through multiple lines of image data, then provides a black reference signal then images a series of lines at a slower speed, these lines being the lines of interest for focusing and illumination operations in the optical symbology imager. Finally, the remaining lines are passed through quickly. The imager goes back into reset mode after either normal or fast mode operation, and is thereby immediately ready to perform another scan. The fast mode operation enables the imager to obtain the approximately ten lines of image data of concern in only approximately 5.5 milliseconds, a significant time savings. This operation can be performed for some or all of the multiple optical positions.
    • 提供了一种以加速模式操作电荷耦合器件的方法,特别是与光学符号扫描仪相结合,以便使成像器相对于代码的位置变化最小化。 CCD具有两个水平移位寄存器,每个移位寄存器都接收每隔一个扫描线,使得每个水平移位寄存器的输出等于普通电视信号262的扫描线数。该方法跳过多行图像数据,然后提供黑色参考 然后信号以较慢的速度对一系列线进行成像,这些线是用于光学符号系统成像器中的聚焦和照明操作的兴趣线。 最后,其余的行通过快速传递。 在正常或快速模式操作之后,成像器返回复位模式,从而立即准备好执行另一次扫描。 快速模式操作使得成像器能够在大约5.5毫秒内获得大约十行关注的图像数据,节省了大量的时间。 可以对多个光学位置中的一些或全部执行该操作。
    • 29. 发明授权
    • Optical focusing device and method
    • 光学聚焦装置及方法
    • US6098887A
    • 2000-08-08
    • US152229
    • 1998-09-11
    • Luis A FigarellaDavid A. ImrieHarry McKinleyHoward SternJon E. Van Tassell
    • Luis A FigarellaDavid A. ImrieHarry McKinleyHoward SternJon E. Van Tassell
    • G06K7/10B06N7/10
    • G06K7/10742G06K7/10811
    • A hand held, omnidirectional symbology or bar code reader for imaging linear and two dimensional (matrix, maxi-code) bar codes over relatively long working distances. The reader includes an imaging system including a focusing objective taking lens and a two-dimensional photodetector that operate to form an image of a bar code in X and Y directions simultaneously and generate an electrical signal representative of the code for subsequent downstream processing which extracts information embedded in a bar code. Focusing is achieved via a rotating disk that carries a plurality of optical shims for different focus zones. A through-the-lens (TTL) targeting system is provided to visually assist the user in positioning the reader for a variety of code modalities to assure that a bar code will be captured within the field of view and be sharply imaged on the photodetector when the lens is focused. Two different forms of artificial illumination are provided to accommodate nearby codes that may be either specular or partially diffuse and more distant codes where the reflection characteristics have less impact on code contrast. Elements of the photodetector are used to assess available light levels and activate the artificial illumination system when ambient light levels are low. Ranging through the lens using elements of the photodetector is included to provide information to set the focus of the objective lens in one of many possible focusing zones. All of the reader's components are housed in an ergonomically designed shell to reduce user repetitive stress injuries while providing access to a user interface and a protective cover for the reader's various systems.
    • 手持式,全方位符号系统或条形码读取器,用于在较长工作距离上对线性和二维(矩阵,最大码)条形码进行成像。 阅读器包括一个成像系统,包括一个聚焦目标拍摄镜头和一个二维光电检测器,它们可以同时在X和Y方向上形成一个条形码图像,并产生一个电信号,代表下一个下一个处理的代码,提取信息 嵌入条形码。 聚焦通过旋转盘实现,该旋转盘携带用于不同聚焦区域的多个光学垫片。 提供透镜(TTL)瞄准系统以视觉上辅助用户定位读取器以用于各种代码模式,以确保在视场内捕获条形码并且在光电检测器上被锐利地成像, 镜头被聚焦。 提供两种不同形式的人造照明以适应附近的代码,其可以是镜面或部分漫射,并且更远的代码,其中反射特性对代码对比度的影响较小。 光电探测器的元件用于评估可用的光照水平,并且当环境光线水平低时激活人造照明系统。 包括使用光电检测器的元件通过透镜进行测距以提供信息以将物镜的焦点设置在许多可能的聚焦区域之一中。 所有阅读器的组件都安装在符合人体工程学的外壳中,以减少用户重复的压力伤害,同时提供访问用户界面和读取器各种系统的保护盖。
    • 30. 发明授权
    • Wafer
    • 晶圆
    • US5949584A
    • 1999-09-07
    • US978838
    • 1997-11-26
    • Timothy P. WhiteHoward Stern
    • Timothy P. WhiteHoward Stern
    • G02B27/14
    • G02B27/144
    • An imaging system for viewing indicia on an object to be observed in which the indicia comprises a plurality of either hard and/or soft marks. The light supplied by a light source is collimated by at least one lens and supplied toward an object to be observed and the reflected light is then focussed at a focal plane. The focal plane is located adjacent or coincident with a light receiving entrance of a camera or other imaging device. When a soft mark is imaged, the light is supplied at an angle to but not along the optical axis and is focussed by the lens to from an accurate image of the light source at the focal plane. Any light which contacts the unaltered specular reflective surface of the object to be observed as well as the central area of the soft mark facilitates a true and accurate reflection of the light source at the focal plane while the altered, non-flat areas of the object to be observed at least partially scatter or disperse the supplied light. Some of the scattered and dispersed light is received by the light receiving entrance and can be focussed and observed by the camera so that the indicia can be accurately perceived by the camera using conventional techniques. When imaging a hard mark, light is supplied by the light source along the optical axis. The supplied light which illuminates the hard mark is effectively absorbed by or reflected away from the optical axis and thus appears dark while the specular areas of the object to be observed are perceived by the camera as being bright.
    • 一种用于观察要观察的物体上的标记的成像系统,其中所述标记包括多个硬标记和/或软标记。 由光源提供的光由至少一个透镜准直,并朝向要被观察的物体供应,然后将反射的光聚焦在焦平面上。 焦平面位于相机或其他成像装置的光接收入口附近或重合位置。 当软标记成像时,以与光轴成一定角度的方式提供光,并且由透镜聚焦于焦平面处的光源的精确图像。 与要观察的物体的未改变的镜面反射表面接触的任何光以及软标记的中心区域有助于光焦点在焦平面处的真实和准确的反射,而物体的改变的非平坦区域 观察到至少部分地散射或分散供应的光。 一些散射光和分散的光被光接收入口接收,并且可以由照相机进行聚焦和观察,使得使用常规技术可以通过照相机精确地感知标记。 当对硬标记进行成像时,由光源沿光轴提供光。 照亮硬标记的提供的光被光轴有效地吸收或被反射离开,因此看起来很暗,而被观察物体的镜面区域被照相机感知为亮。