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    • 23. 发明申请
    • APPARATUS FOR IMAGING A PAGE OF A BOOK OR OTHER SIMILAR DOCUMENT
    • 用于成像书或其他类似文件的页面的装置
    • US20170019554A1
    • 2017-01-19
    • US14802536
    • 2015-07-17
    • Ecole Polytechnique Federale de Lausanne (EPFL)
    • Loic Arnaud BaboulazMartin Vetterli
    • H04N1/12H04N1/028H04N1/195
    • H04N1/1295G06K9/00442G06K9/2027H04N1/0249H04N1/028H04N1/02845H04N1/19594H04N2201/0081H04N2201/0434
    • The present invention relates to an apparatus for imaging a page of a book or other similar document comprising: a table defining a support plane, the book being disposed on the table such that the page to image is substantially parallel to the support plane and an other page of the book is orientated at an angle α relative to the support plane, a being between 0° and 70°; means for displacing the table parallel to the support plane along a longitudinal direction and a lateral direction and/or perpendicular to the support plane along a normal direction; a plurality of light sources, each light source producing an incident light and directing said incident light onto an inspection area of the page to image at a predetermined zenith angle θi and at a predetermined azimuth angle φi; means for sensing the light reflected by the page to image; at least one control unit adapted to control said displacing means, said light sources and said sensing means; wherein the light sources are fixedly connected to a main frame, said main frame defining a partially or fully hemispherical dome;wherein said main frame comprises a first module and a second module, said second module being detachably connected to the first module at a first end thereof, said first end defining a plane that is obliquely orientated at an angle β relative to the support plane; andwherein, when the second module is disconnected from the first module, a free space between the first end of the first module and the support plane is adapted to permit the movement of the table and the book in the longitudinal and lateral directions without coming into contact with the main frame.
    • 其中当所述第二模块与所述第一模块断开连接时,所述第一模块的所述第一端和所述支撑平面之间的自由空间适于允许所述桌子和所述书本在纵向和横向方向上移动而不接触 与主框架。
    • 24. 发明授权
    • Radiation image read-out apparatus
    • 辐射图像读出装置
    • US5801391A
    • 1998-09-01
    • US756912
    • 1996-11-26
    • Satoshi ArakawaHiroaki Yasuda
    • Satoshi ArakawaHiroaki Yasuda
    • G21K4/00G01T1/00G03B42/02H04N1/04H04N1/12H04N5/32
    • H04N1/04G01T1/2014H04N1/0283H04N1/1295H04N1/12H04N2201/0412H04N2201/0458
    • In a radiation image read-out apparatus, a stimulable phosphor sheet, on which a radiation image of an object has been stored, is scanned with a laser beam of a predetermined output power, which causes the stimulable phosphor sheet to emit light in proportion to the amount of energy stored thereon during its exposure to radiation, and the emitted light is photoelectrically detected with a predetermined sampling time. A response speed r �sec! of the stimulable phosphor constituting the stimulable phosphor sheet, the laser beam output power p �W!, a picture element size s �m!, and the sampling time t �sec! are set such that they may satisfy Formulas (1), (2), and (3): r/(s.multidot.t) 1 (3) The radiation image having been stored on the stimulable phosphor sheet is thereby read out quickly and such that a reproduced image having good image quality may be obtained.
    • 在放射线图像读取装置中,用预定输出功率的激光束扫描其上存储有物体的放射线图像的可刺激的荧光体片,其使得可激发的荧光体片材以与 在其暴露于辐射期间存储在其上的能量的量,并且以预定的采样时间对发射的光进行光电检测。 构成可刺激荧光体片的可激发荧光体的响应速度r [秒],激光束输出功率p [W],像素尺寸s [m]和采样时间t [sec]被设定为使得它们 满足公式(1),(2)和(3):r /(sxt)<5,000(1)t / s2 <80(2)pxt / s2> 1(3)辐射图像已经存储在可刺激 从而可以快速地读出荧光片,从而可以获得具有良好图像质量的再现图像。
    • 25. 发明授权
    • Synchronizing signal generating system for laser scanner
    • 激光扫描仪同步信号发生系统
    • US4962431A
    • 1990-10-09
    • US311778
    • 1989-02-17
    • Susumu ImakawaYoshinobu TakeyamaNobuaki KuboMasanori Saitoh
    • Susumu ImakawaYoshinobu TakeyamaNobuaki KuboMasanori Saitoh
    • G06K15/12H04N1/053H04N1/113H04N1/12
    • H04N1/1295G06K15/1219H04N1/053H04N1/1135H04N1/12H04N2201/0471H04N2201/04768
    • A synchronizing signal generating system for a laser scanner includes a source for emitting a first laser beam for scanning and a second laser beam for synchronization of scans by the first laser beam, a polygonal mirror for causing the first laser beam to scan a medium and for causing the second laser beam to scan a grating which has bright portions and dark portions alternately arranged along a scanning direction of the second laser beam, a converging optical system for converging the second laser beam transmitted through the grating, a light receiving system for receiving the second laser beam converged by the converting optical system and for generating a synchronizing signal and a circuit for controlling the source responsive to the synchronizing signal so as to synchronize a scan timing of the first laser beam. A scan length of the second laser beam measured on the grating is set longer than a scan length of the first laser beam measured on the same plane.
    • 一种用于激光扫描器的同步信号发生系统,包括用于发射用于扫描的第一激光束的源和用于由第一激光束扫描同步的第二激光束,用于使第一激光束扫描介质并用于 使第二激光束扫描具有沿着第二激光束的扫描方向交替排列的亮部和暗部的光栅,用于会聚通过光栅透射的第二激光束的会聚光学系统,用于接收 第二激光束由转换光学系统会聚并用于产生同步信号,以及用于响应于同步信号控制源的电路,以便同步第一激光束的扫描定时。 在光栅上测量的第二激光束的扫描长度被设定为比在同一平面上测量的第一激光束的扫描长度更长。
    • 26. 发明授权
    • CRT with means for monitoring electron beam
    • CRT具有用于监测电子束的装置
    • US4827183A
    • 1989-05-02
    • US151439
    • 1988-02-02
    • Peter Seats
    • Peter Seats
    • H01J29/00H01J29/54H04N1/40H04N9/24H01J29/88H01J29/89
    • H04N1/127H01J29/00H01J29/54H04N1/1295H04N1/40025H04N9/24
    • A cathode ray tube useful as a transducer for converting electrical signal information into a visual pattern on a recording medium uses a cylindrical envelope along which a signal modulated beam is projected. A fiber optics plate is positioned along the sidewall of the envelope and the beam is swept in a liner scan of the fiber optics plate by an array of electromagnets, positioned along the envelope and properly excited to deflect the beam appropriately. For monitoring the properties of the electron beam, the inner surface of the end plate of the envelope is provided with a patterned coating of luminescent material on which the electron beam is incident when undeflected by the array of electromagnets. Sensors are provided for measuring the flux distribution for monitoring the properties of the electron beam.
    • 可用作用于将电信号信息转换成记录介质上的视觉图案的换能器的阴极射线管使用投影信号调制束的圆柱形外壳。 纤维光学板沿着封套的侧壁定位,并且通过沿着包络定位并适当地激励以适当地偏转光束的电磁体阵列在光束板的衬垫扫描中扫描光束。 为了监测电子束的性质,外壳的端板的内表面设置有发光材料的图案化涂层,当电磁体阵列未偏转时,电子束入射到其上。 提供传感器用于测量用于监测电子束特性的通量分布。