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    • 2. 发明授权
    • Image reading apparatus with illumination timing control
    • 具有照明时序控制的图像读取装置
    • US4791493A
    • 1988-12-13
    • US88486
    • 1987-08-19
    • Makoto OguraTatsundo KawaiKatsuhiko YamadaShinichi Seitoh
    • Makoto OguraTatsundo KawaiKatsuhiko YamadaShinichi Seitoh
    • H04N1/04H04N1/031H04N1/40
    • H04N1/40056H04N1/031
    • An image reading apparatus for reading an image by radiating the light onto an original includes a photosensor array the photosensors of which are arranged along the width of the original and receive the light scattered from the original surface and convert that light into electric signals. A period of time from the time when the photosensors receive the light until outputs containing the read information are derived cannot be ignored as compared with a reading scan time when the signals are read from the photosensor. A light source is arranged along the width of the original and is divided into a plurality of. A light-on controller for lighting the blocks of the light source to illuminate pixels for the reading of an image on the original, in advance of the reading of the pixels, for a time interval over neater than the foregoing period of time. In this apparatus, only a single LED array is used, so that the arrangement of the apparatus is simplified and the cost of the apparatus and its operating cost are also reduced.
    • 用于通过将光照射到原稿上来读取图像的图像读取装置包括光电传感器阵列,其光敏元件沿着原稿的宽度布置并且接收从原始表面散射的光并将该光转换成电信号。 与从光传感器读取信号时的读取扫描时间相比,导出从光传感器接收光直到包含读取信息的输出的时间的时间段不能被忽略。 光源沿着原稿的宽度布置,并被分成多个。 一种点亮控制器,用于照亮所述光源的块以在像素的读取之前在比上述时间段更短的时间间隔照亮用于原稿上的图像的读取的像素。 在该装置中,仅使用单个LED阵列,从而简化了装置的布置,并且降低了装置的成本和运行成本。
    • 6. 发明授权
    • Photosensor and image reading device with improved correction means for
signal correction and image reading method
    • 光传感器和图像读取装置,具有改进的校正装置,用于信号校正和图像读取方法
    • US5272548A
    • 1993-12-21
    • US534262
    • 1990-06-07
    • Tatsundo KawaiToshihiro SaikaNoriyuki KaifuIsao KobayashiTadao EndoKouji Tomoda
    • Tatsundo KawaiToshihiro SaikaNoriyuki KaifuIsao KobayashiTadao EndoKouji Tomoda
    • H04N1/028H01L27/146H04N1/031H04N1/19H04N1/401H04N1/024
    • H04N1/0316H04N1/0313H04N1/401H01L27/14678
    • A photosensor with improved correction of image signals has a first photosensor portion including a plurality of photoelectric converting devices for reading an object and providing image signals thereof. A second photosensor portion includes a plurality of photoelectric converting devices and provides reference signals from light reflected from a reference member, or light received directly from a light source. Correction circuitry corrects the image signals from the first photosensor portion in accordance with the reference signals output from the second photosensor portion. Preferably, the photoelectric converting devices of the first and second photosensor portions are arranged in adjacent, parallel lines on the same substrate. Preferably, reference signals from the converting devices of the second photosensor are used by the correction circuitry to correct the electrical signals from substantially adjacent converting devices of the first photosensor portion. A single converting device of the second photosensor portion may be used to correct either one or more of the converting devices of the first photosensor portion.
    • 具有改进的图像信号校正的光传感器具有第一光传感器部分,其包括用于读取对象并提供其图像信号的多个光电转换装置。 第二光传感器部分包括多个光电转换装置,并且提供从参考部件反射的光的参考信号,或直接从光源接收的光。 校正电路根据从第二光电传感器部分输出的参考信号来校正来自第一光电传感器部分的图像信号。 优选地,第一和第二光电传感器部分的光电转换装置布置在同一基板上的相邻的平行线上。 优选地,校正电路使用来自第二光电传感器的转换装置的参考信号来校正来自第一光电传感器部分的基本上相邻的转换装置的电信号。 可以使用第二光电传感器部分的单个转换装置来校正第一光电传感器部分的一个或多个转换装置。
    • 7. 发明授权
    • Photosensor and image reading device with improved correction means for
signal correction and image reading method
    • 光传感器和图像读取装置,具有改进的校正装置,用于信号校正和图像读取方法
    • US5233442A
    • 1993-08-03
    • US932381
    • 1992-08-19
    • Tatsundo KawaiToshihiro SaikaNoriyuki KaifuIsao KobayashiTadao EndoKouji Tomoda
    • Tatsundo KawaiToshihiro SaikaNoriyuki KaifuIsao KobayashiTadao EndoKouji Tomoda
    • H01L27/146H04N1/031H04N1/401
    • H04N1/0316H04N1/0313H04N1/401H01L27/14678
    • A photosensor with improved correction of image signals has a first photosensor portion including a plurality of photoelectric converting devices for reading an object and providing image signals thereof. A second photosensor portion includes a plurality of photoelectric converting devices and provides reference signals from light reflected from a reference number, or light received directly from a light source. Correction circuitry corrects the image signals from the first photosensor portion in accordance with the reference signals output from the second photosensor portion. Preferably, the photoelectric converting devices of the first and second photosensor portions are arranged in adjacent, parallel lines on the same substrate. Preferably, reference signals from the converting devices of the second photosensor are used by the correction circuitry to correct the electrical signals from substantially adjacent converting devices of the first photosensor portion. A single converting device of the second photosensor portion may be used to correct either one or more of the converting devices of the first photosensor portion.
    • 具有改进的图像信号校正的光传感器具有第一光传感器部分,其包括用于读取对象并提供其图像信号的多个光电转换装置。 第二光传感器部分包括多个光电转换装置,并且从参考号反射的光提供参考信号,或直接从光源接收的光。 校正电路根据从第二光电传感器部分输出的参考信号来校正来自第一光电传感器部分的图像信号。 优选地,第一和第二光电传感器部分的光电转换装置布置在同一基板上的相邻的平行线上。 优选地,校正电路使用来自第二光电传感器的转换装置的参考信号来校正来自第一光电传感器部分的基本上相邻的转换装置的电信号。 可以使用第二光电传感器部分的单个转换装置来校正第一光电传感器部分的一个或多个转换装置。
    • 8. 发明授权
    • Close-contact type image sensor and image reading apparatus using the same
    • 接近型图像传感器和使用其的图像读取装置
    • US06181442B2
    • 2001-01-30
    • US08990169
    • 1997-12-12
    • Makoto OguraTatsundo Kawai
    • Makoto OguraTatsundo Kawai
    • H04N104
    • H04N1/0318H04N2201/02497H04N2201/03112H04N2201/03116H04N2201/03133H04N2201/03141H04N2201/03145H04N2201/03162
    • For preventing occurrence of interference fringes derived from interference of light rays on a contact plane between a contact glass and a cover glass, and thus homogenizing an output wave that may otherwise undergo the adverse effect of interference fringes, a close-contact type image sensor includes a contact glass arranged to come into contact with a read surface of an original, a light source for irradiating light to the read surface, an image forming lens for converging light reflected from the read surface, an image sensor part for reading an image of the original formed on an image plane of the image forming lens, and a cover glass for fixing the light source and the image forming lens at respective predetermined positions in a housing, wherein an air layer is present between the contact glass and the cover glass.
    • 为了防止由接触玻璃和盖玻璃之间的接触面上的光线干涉导致的干涉条纹的发生,从而均匀化否则可能会受到干涉条纹的不利影响的输出波,紧密接触型图像传感器包括 布置成与原稿的读取表面接触的接触玻璃,用于向读取表面照射光的光源,用于会聚从读取表面反射的光的图像形成透镜,用于读取读取表面的图像的图像传感器部件 形成在图像形成透镜的图像平面上的原稿,以及用于将光源和成像透镜固定在壳体中的各个预定位置处的玻璃罩,其中在接触玻璃和盖玻璃之间存在空气层。