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    • 81. 发明授权
    • Single sideband scanner
    • 单边带扫描仪
    • US4253725A
    • 1981-03-03
    • US27342
    • 1979-04-05
    • Richard V. Johnson
    • Richard V. Johnson
    • G02B26/10G02F1/00G02B27/17
    • G02B26/10G02F1/00
    • A scanner using spatial modulation of the light profile incident upon an acousto-optic modulator in which the deflector clear aperture window is decentered from the optical axis of the system so that the light profile falls just within one edge of the deflector clear aperture window. One advantage of the decentering of the optical alignment is increased system frequency response due to transmission of only one sideband of the light profile, which in terms of a printing systems means increased resolution. Loss of laser light due to decentering of the optical alignment can be minimized by using a single sideband signal as the modulator drive signal instead of the conventional double sideband drive signal. Distortion of the light profile due to decentering of the optical alignment can be reduced by predistorting the single sideband drive signal supplied to the acousto-optic modulator.
    • 使用入射到声光调制器上的光分布的空间调制的扫描器,其中偏转器透明孔径窗从系统的光轴偏心,使得光分布落在偏转器透明孔径窗口的一个边缘内。 光学对准偏心的一个优点是由于仅传输光轮廓的一个边带而增加的系统频率响应,这在打印系统方面意味着提高的分辨率。 通过使用单个边带信号作为调制器驱动信号而不是传统的双边带驱动信号,可以使由于光学对准偏心导致的激光损失最小化。 由于光学校准的偏心导致的光分布的失真可以通过预调制提供给声光调制器的单边带驱动信号来减少。
    • 83. 发明授权
    • Scanning optical system including an afocal system
    • 扫描光学系统包括无焦点系统
    • US4251125A
    • 1981-02-17
    • US16163
    • 1979-02-23
    • Kazuo MinouraMasaaki Ishii
    • Kazuo MinouraMasaaki Ishii
    • G02B26/12G02B27/17
    • G02B26/12
    • An optical system for scanning is disclosed which comprises an afocal optical system and a first - and a second deflecting members so disposed respectively at an optically conjugate position relative to the afocal optical system as to substantially interpose the system therebetween. The plane formed by a beam deflected by the first deflecting member is substantially coincident with that formed by a beam deflected by the second one. In order to control the angle of deviation (deflection) of the beam finally scanned, there is provided, for the afocal optical system, means for differentiating the exit angle from the incident angle of a beam passing through the afocal optical system. Furthermore, the angle of deflection of a beam deflected by the first deflecting member in a unit time period is made different from that deflected by the second one.
    • 公开了一种用于扫描的光学系统,其包括无焦光学系统和分别设置在相对于远焦光学系统的光学共轭位置处的第一和第二偏转构件,以便将系统基本上插入其间。 由第一偏转构件偏转的梁形成的平面基本上与由第二偏转构件偏转的梁形成的平面重合。 为了控制最终扫描的光束的偏离角(偏转),对于无焦光学系统,提供了用于区分出射角与通过无焦光学系统的光束的入射角的装置。 此外,使由第一偏转构件偏转的光束在单位时间段内的偏转角度与由第二偏转构件偏转的角度不同。
    • 85. 发明授权
    • Holographic scanning system
    • 全息扫描系统
    • US4224509A
    • 1980-09-23
    • US953155
    • 1978-10-19
    • Charles C. K. Cheng
    • Charles C. K. Cheng
    • G02B5/32G02B26/10G06K7/10G02B27/17
    • G06K7/10871G02B26/106
    • A holographic scanning system for scanning a bar code indicia is disclosed in which the light beam of a laser is split into two segments, each directed through a plurality of holograms mounted on a single rotating disk for generating a scanning pattern comprising a plurality of intersecting lines on a target area through which passes a label or object bearing a bar code indicia. The light reflected from the bar code indicia is picked up by an optical detector for use in reading the bar code. A second embodiment includes a rotating disk having mounted thereon two holograms each offset to the other which generates a semicircular scan pattern used in generating an X scan pattern on the target area.
    • 公开了一种用于扫描条形码标记的全息扫描系统,其中激光的光束被分成两个部分,每个部分被引导通过安装在单个旋转盘上的多个全息图,以产生包括多个相交线的扫描图案 在通过标签或物体的目标区域上带有条形码标记。 从条形码标记反射的光被光学检测器拾取,用于读取条形码。 第二实施例包括其上安装有两个全息图的旋转盘,每个全息图偏移到另一个,其产生用于在目标区域上生成X扫描图案的半圆扫描图案。
    • 87. 发明授权
    • Prismatic beam rotator for an optical beam projector
    • 用于光束投影仪的棱镜光束旋转器
    • US4209224A
    • 1980-06-24
    • US948927
    • 1978-10-05
    • George W. Stewart, Jr.
    • George W. Stewart, Jr.
    • F41G7/26G02B26/10G02B27/17
    • G02B26/108F41G7/263
    • A beam projector which is controlled to alternately transmit rectangular cross-sectional beams substantially parallel to a projection axis, wherein the beams are respectively pulse modulated over a correspondingly distinct pulse rate frequency range to supply yaw and pitch information and are respectively scanned in a direction correspondingly orthogonal to the cross-sectional length of each beam. The size format of the beam cross-sections and the angles of scan are controlled according to a predetermined time variable function. In a first time period, the largest cross-sectional beams are alternately transmitted and the scan angle is decreased as a function of time, so that a fixed area of detectable information is available for detection with respect to an imaginary orthogonal reference plane moving along the projection axis at a rate corresponding to the predetermined time variable function. In subsequent time periods proportionately smaller cross-sectional beams are transmitted and the scan angle is continually controlled. The disclosed embodiment employs the use of a single set of proportionately different size formatted cross-sectional laser sources as a radiation generator, a scanning mechanism, a vibrationally modulated Pechan type prism and a fixed focus optical system to effect alternately transmitted beams, of selectable cross-section, orthogonally oriented and scanned with respect to each other.
    • 被控制为交替地传输基本上平行于投影轴的矩形横截面光束的光束投影仪,其中所述光束分别在相应不同的脉冲频率范围上被脉冲调制以提供偏航和俯仰信息,并且分别沿相应的方向扫描 与每个梁的横截面长度正交。 根据预定的时间可变函数来控制光束横截面的尺寸格式和扫描角度。 在第一时间段中,最大的横截面波束被交替地传输并且扫描角度随着时间的推移而减小,使得可检测信息的固定区域可用于相对于沿着移动的虚拟正交参考平面进行检测 投影轴以与预定时间可变函数相对应的速率。 在随后的时间段内,成比例地较小的横截面光束被传输并且扫描角度被不断地控制。 所公开的实施例采用使用一组成比例不同大小的格式化的横截面激光源作为辐射发生器,扫描机构,振动调制的Pechan型棱镜和固定聚焦光学系统,以实现可选交叉的交替传输的光束 分段,正交定向并相对于彼此扫描。
    • 88. 发明授权
    • Reproduction scanning system having intermediate storage between input
and output scanning stations
    • 复制扫描系统在输入和输出扫描站之间具有中间存储
    • US4205350A
    • 1980-05-27
    • US893721
    • 1978-04-05
    • William F. Gunning
    • William F. Gunning
    • H04N1/387H04N1/04G01J1/20G02B27/17G03G15/28
    • H04N1/3872
    • A reproduction scanning system having intermediate storage between input and output scanning stations wherein an input document is scanned in first and second directions, the first direction being orthogonal to said second direction, and the electrical signals representative of information on said scanned document being stored on an intermediate storage member for storage, signal processing or data manipulation. The information stored in the storage member may be read out and reproduced on a reproducing medium. Other system features include input scan reversal for alternate bound pages during bound volume scanning, synchronization of the system by a clock associated with the storage member, input/output interleaving with a print interrupt feature, image centering and edge fadeout for image reduction, and independent magnification demagnification by separately variable raster spacing.
    • 一种在输入和输出扫描站之间具有中间存储器的再现扫描系统,其中在第一和第二方向上扫描输入文档,第一方向与所述第二方向正交,并且表示所述扫描文档上的信息的电信号被存储在 用于存储,信号处理或数据操作的中间存储构件。 存储在存储构件中的信息可以在再现介质上被读出和再现。 其他系统功能包括在绑定的卷扫描期间用于替代绑定页的输入扫描反转,系统与存储构件相关联的时钟同步,与打印中断特征的输入/输出交错,用于图像缩小的图像对中和边缘渐变以及独立的 通过单独变化的光栅间距放大缩小。