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1. 发明授权

US4967073A Light scanning device having a synchronizing grid with a phase-detected starting point area 失效
标题翻译：光扫描装置具有同步栅格和相位检测起点区域
公开(公告)号：US4967073A
公开(公告)日：1990-10-30
申请号：US416559
申请日：1989-10-03
申请人： Ono Shuji , Tsutomu Kimura , Yoshimi Takasaki
发明人： Ono Shuji , Tsutomu Kimura , Yoshimi Takasaki
IPC分类号： G02B26/10 , G02B26/12 , H04N1/053 , H04N1/113 , H04N1/12
CPC分类号： G02B26/127 , H04N1/053 , H04N1/1135 , H04N1/12 , H04N2201/0471 , H04N2201/04768
摘要： Scanning and synchronizing light beams are deflected by a light deflector. The scanning light beam is used to scan an object surface, whereas the synchronizing light beam is applied to a grid for generating a synchronizing signal to detect the scanning position of the scanning light beam on the object surface. The grid includes a starting point control area, corresponding to a main scanning cycle starting position on the object surface, for modulating the synchronizing light beam applied to the grid so that light having passed through the starting point control area will have a different phase than the light from the other portion of the grid.
摘要翻译：扫描和同步光束被光偏转器偏转。扫描光束用于扫描物体表面，而同步光束被施加到栅格以产生同步信号以检测扫描光束在物体表面上的扫描位置。栅格包括对应于物体表面上的主扫描周期开始位置的起始点控制区域，用于调制施加到栅格上的同步光束，使得通过起始点控制区域的光将具有与来自电网另一部分的光。

2. 发明授权

US4816678A Method of detecting stored radiation energy level on stimulable phosphor sheet 失效
标题翻译：检测可刺激磷光体片上储存的辐射能量水平的方法
公开(公告)号：US4816678A
公开(公告)日：1989-03-28
申请号：US169702
申请日：1988-03-18
申请人： Yoshimi Takasaki
发明人： Yoshimi Takasaki
IPC分类号： G03B42/02 , A61B6/00 , G01T1/208 , G01T1/29 , H04N1/04 , G05B1/02
CPC分类号： G01T1/208 , G01T1/2014 , G01T1/2016
摘要： A method of detecting stored radiation energy level on a stimulable phosphor sheet comprises the steps of storing a predetermined level of radiation energy on a stimulable phosphor sheet for test before image read-out is carried out by scanning a stimulable phosphor sheet carrying a radiation image stored thereon with stimulating rays which cause the stimulable phosphor sheet to emit light and detecting the emitted light by a photomultiplier, carrying out the scanning and light detection for the stimulable phosphor sheet for test, and detecting a voltage Vo generated at a bleeder resistor of the photomultiplier at each scanning position. In the course of carrying out image read-out from the stimulable phosphor sheet carrying the radiation image stored thereon, a voltage V generated at the bleeder resistor is detected at each scanning position, and the voltage V is compared with the voltage Vo. Based on the value V-Vo, a radiation energy level exceeding the predetermined level is detected.
摘要翻译：一种在可刺激的荧光体片上检测存储的辐射能量水平的方法包括以下步骤：通过扫描携带存储的辐射图像的可刺激磷光体片，在预先执行图像读出之前将预定水平的辐射能量存储在可刺激的荧光体片上用于测试在其上具有刺激性的光线，其使可刺激的荧光体片发光，并通过光电倍增管检测发射的光，对用于测试的可激发的荧光体片进行扫描和光检测，并检测在光电倍增管的泄放电阻器处产生的电压Vo 在每个扫描位置。在从携带其上存储的放射线图像的可刺激的磷光体片进行图像读出的过程中，在每个扫描位置处检测在泄放电阻器处产生的电压V，并将电压V与电压Vo进行比较。基于值V-Vo，检测到超过预定水平的辐射能量水平。

3. 发明授权

US5004906A Logarithmic amplifier, and image read-out apparatus using the same 失效
标题翻译：对数放大器和使用其的图像读出装置
公开(公告)号：US5004906A
公开(公告)日：1991-04-02
申请号：US466837
申请日：1990-01-18
申请人： Yoshimi Takasaki , Kazuo Horikawa
发明人： Yoshimi Takasaki , Kazuo Horikawa
IPC分类号： G06G7/24 , G06T1/00 , H03G7/00 , H03G11/08 , H04N1/407
CPC分类号： H04N1/407 , H03G7/00
摘要： A logarithmic amplifier comprises an amplifier provided with a feedback circuit, a logarithmic conversion device in the feedback circuit, an oscillation preventing circuit which is provided with a capacitor connected in parallel with the logarithmic conversion device, and a control circuit. The control circuit controls the oscillation preventing circuit in accordance with the current fed into the logarithmic amplifier, so that the amount of certain components in the output from the amplifier, which components are fed back to an input terminal of the amplifier through the oscillation preventing circuit, decreases as the current fed into the logarithmic amplifier becomes smaller. An image read-out apparatus comprises a photoelectric detector which detects light from a recording medium, which light is emitted by the recording medium when it is scanned, and the logarithmic amplifier into which the output current generated by the photoelectric detector is fed. An image having good sharpness is thereby obtained.
摘要翻译：对数放大器包括设置有反馈电路的放大器，反馈电路中的对数转换装置，设置有与对数转换装置并联连接的电容器的振荡防止电路和控制电路。控制电路根据馈入对数放大器的电流控制振荡防止电路，使得放大器的输出中的某些分量的量通过振荡防止电路反馈到放大器的输入端随着馈入对数放大器的电流变小而减小。图像读出装置包括：光电检测器，其检测来自记录介质的光，当记录介质被扫描时该光被发射;以及对数放大器，其中馈送由光电检测器产生的输出电流。从而获得清晰度好的图像。

4. 发明授权

US4687937A Residual image erasure control using photomultiplier bleeder resistor voltage 失效
标题翻译：使用光电倍增管泄压电阻的残留图像擦除控制
公开(公告)号：US4687937A
公开(公告)日：1987-08-18
申请号：US741337
申请日：1985-06-05
申请人： Toshitaka Aagano , Yoshimi Takasaki
发明人： Toshitaka Aagano , Yoshimi Takasaki
IPC分类号： G03B42/02 , A61B6/00 , G01T1/29 , H04N1/04 , G01T1/105
CPC分类号： G01T1/2016
摘要： In a radiation image recording and reproducing system using a stimulable phosphor sheet, a voltage generated at a bleeder resistor of a photomultiplier for conducting image read-out is detected at the step of radiation image read-out at least for the stimulable phosphor sheet or a portion thereof where the level of X-ray exposure amount is higher than a predetermined level, and the exposure amount of erasing light is controlled on the basis of the detected voltage. Or, the erasing light exposure amount is controlled on the basis of an output current of the photomultiplier when the output current is equal to or smaller than a predetermined value when is smaller than a saturated value of the output current, and the bleeder resistor voltage of the photomultiplier is detected and the erasing light exposure amount is controlled on the basis of the detected voltage when the output current of the photomultiplier is larger than the predetermined value.
摘要翻译：在使用可刺激的荧光体片的放射线图像记录和再现系统中，在用于进行图像读出的光电倍增器的放电电阻器处产生的电压在至少对于可刺激的荧光体片材或其中X射线曝光量的水平高于预定水平，并且基于检测到的电压来控制擦除光的曝光量。或者，当小于输出电流的饱和值时，当输出电流等于或小于预定值时，基于光电倍增管的输出电流来控制擦除曝光量，并且泄放电阻器电压当光电倍增器的输出电流大于预定值时，检测光电倍增管并基于检测电压来控制擦除光曝光量。

5. 发明授权

US4882490A Light beam scanning apparatus having two detectors whose signal ratio indicates main scanning position 失效
标题翻译：具有两个信号比率指示主扫描位置的检测器的光束扫描装置
公开(公告)号：US4882490A
公开(公告)日：1989-11-21
申请号：US249062
申请日：1988-09-22
申请人： Yoshimi Takasaki , Akira Yamaguchi , Ryoichi Yoshimura
发明人： Yoshimi Takasaki , Akira Yamaguchi , Ryoichi Yoshimura
IPC分类号： G06K15/12 , H04N1/047 , H04N1/113 , H04N1/12
CPC分类号： G06K15/1219 , H04N1/0473 , H04N1/1135 , H04N1/12 , H04N2201/04712 , H04N2201/04763
摘要： A light beam scanning apparatus scans an object such as a stimulable phosphor sheet by applying a light beam deflected in a main scanning direction to the object while moving the object in an auxiliary scanning direction substantially normal to the main scanning direction. The light beam scanning apparatus includes first and second light detectors such as photodiodes juxtaposed in the main scanning direction and having respective light detecting surfaces extending in the auxiliary scanning direction. The first and second light detectors produce respective output signals at a predetermined ratio when the light beam for scanning the object in the main scanning direction is in a reference main scanning position, and produce respective output signals at a ratio varied from the predetermined ratio when the light beam is deviated from the reference main scanning positon. The main scanning position of the light beam with respect to the object can be detected from the ratio of the output signals of the first and second light detectors.
摘要翻译：光束扫描装置在基本上垂直于主扫描方向的辅助扫描方向上移动物体的同时，通过将主扫描方向偏转的光束施加到物体来扫描诸如可刺激的荧光体片的物体。光束扫描装置包括第一和第二光检测器，例如在主扫描方向上并置的光电二极管，并且具有沿辅助扫描方向延伸的各个光检测表面。当用于在主扫描方向上扫描物体的光束处于参考主扫描位置时，第一和第二光检测器以预定比例产生相应的输出信号，并且当以光束偏离参考主扫描位置。可以从第一和第二光检测器的输出信号的比率检测光束相对于物体的主扫描位置。

6. 发明授权

US4818876A Image read-out apparatus employing a photomultiplier 失效
标题翻译：使用光电倍增管的图像读出装置
公开(公告)号：US4818876A
公开(公告)日：1989-04-04
申请号：US741407
申请日：1985-06-05
申请人： Toshitaka Agano , Yoshimi Takasaki
发明人： Toshitaka Agano , Yoshimi Takasaki
IPC分类号： H04N5/253 , G01T1/29 , H04N1/028 , H04N5/30 , G01T1/115
CPC分类号： G01T1/2014
摘要： An image read-out apparatus for exposing a recording medium carrying an image stored therein to a light beam, and photoelectrically detecting light carrying the image information obtained from the recording medium by use of a photomultiplier comprises a comparator for comparing an output current signal of the photomultiplier with a predetermined reference value, and a voltage detector for detecting the voltage generated at a bleeder resistor of the photomultiplier. The apparatus also comprises a selection circuit for receiving the output current signal of the photomultiplier, a voltage signal detected by the voltage detector, and an output of the comparator, selecting the output current signal of the photomultiplier when the output current signal of the photomultiplier is equal to or lower than the reference value, and selecting the voltage signal when the output current signal of the photomultiplier is higher than the reference value.
摘要翻译：一种图像读出装置，用于将携带其中存储的图像的记录介质曝光到光束，以及光电检测携带使用光电倍增器从记录介质获取的图像信息的光，包括比较器，用于比较输出电流信号具有预定参考值的光电倍增器，以及用于检测在光电倍增器的泄放电阻器处产生的电压的电压检测器。该装置还包括一个选择电路，用于接收光电倍增管的输出电流信号，由电压检测器检测的电压信号和比较器的输出，当光电倍增管的输出电流信号为...时选择光电倍增管的输出电流信号等于或低于参考值，并且当光电倍增管的输出电流信号高于参考值时选择电压信号。

7. 发明授权

US4655590A Method of coalescing laser beams 失效
标题翻译：聚合激光束的方法
公开(公告)号：US4655590A
公开(公告)日：1987-04-07
申请号：US641689
申请日：1984-08-17
申请人： Toshitaka Aagano , Yoshimi Takasaki
发明人： Toshitaka Aagano , Yoshimi Takasaki
IPC分类号： H01S3/101 , G02B26/10 , G02B27/10 , H01S3/00 , H04N1/028 , G01B11/27
CPC分类号： G02B27/108 , G02B27/144 , G02B27/145 , H01S3/005 , H04N1/02815 , H04N1/0283
摘要： A method of coalescing two or more laser beams employs an optical merging element such as a polarization beam splitter to make the laser beams substantially merged into a single laser beam of multiplied power. In the merged laser beam, however, the original laser beams cannot easily be perfectly aligned with each other. In order to have the laser beams perfectly mingled or coalesced at the position where they are focused on an object to be processed or an original to be read out or a recording medium, the original laser beams substantially merged into a single laser beam are collimated so that the collimated laser beams may be directed to the same focusing position on the object. To collimate the original laser beams in the merged beam, a part of the merged beam is split out and passed through a converging lens to cause the original laser beams focused to points on a pinhole plate by use of a converging lens, and the directions of the original laser beams are corrected to make the laser beams focused to the same point on the pinhole plate or coincide with the pinhole. By making these laser beams coincide with the pinhole, these laser beams are consequently collimated so that they can be focused to the same point on said object, whereby the laser beams are coalesced in effect.
摘要翻译：聚合两个或更多个激光束的方法采用诸如偏振分束器之类的光学合并元件，以使激光束基本上合并成具有倍增功率的单个激光束。然而，在合并的激光束中，原始的激光束不能很好地彼此完全对准。为了使激光束在它们被聚焦在被处理物体上的位置或待读取的原件或记录介质上完美地混合或聚结，基本上合并成单个激光束的原始激光束被准直，因此准直的激光束可以被引导到物体上的相同聚焦位置。为了准直合并光束中的原始激光束，合并光束的一部分被分割并通过会聚透镜，以使聚焦的原始激光束通过会聚透镜指向针孔板，并且方向校正原始激光束以使激光束聚焦到针孔板上的相同点或与针孔重合。通过使这些激光束与针孔一致，这些激光束因此被准直，使得它们可以聚焦到所述物体上的相同点，由此激光束有效地聚结。

8. 发明授权

US4642462A Method of correcting radiation image read-out error 失效
标题翻译：校正辐射图像读出误差的方法
公开(公告)号：US4642462A
公开(公告)日：1987-02-10
申请号：US631844
申请日：1984-07-18
申请人： Toshitaka Aagano , Yoshimi Takasaki
发明人： Toshitaka Aagano , Yoshimi Takasaki
IPC分类号： G03B42/02 , G01T1/29 , G02B26/12 , H04N1/04 , H04N1/401 , G03G5/16
CPC分类号： G01T1/2014 , H04N1/401
摘要： In a radiation image read-out system, a stimulable phosphor sheet carrying a radiation image stored therein is two-dimensionally scanned with stimulating rays, with the main scanning being effected by use of a multifaceted mirror having a plurality of deflecting surfaces. Light emitted by the stimulable phosphor sheet upon exposure to the stimulating rays is detected and converted into an electric image signal. When any of the deflecting surfaces is inclined from its predetermined position, the electric image signal obtained from the scan line drawn by the inclined deflecting surface becomes incorrect. The electric image signal obtained from the scan line drawn by the inclined deflecting surface is corrected by use of a correction coefficient which is predetermined for each deflecting surface according to the amount of inclination from the predetermined position thereof.
摘要翻译：在放射线图像读取系统中，携带其中存储的放射线图像的可刺激的荧光体片材被激发光线二维扫描，主扫描通过使用具有多个偏转表面的多面镜来实现。被刺激的荧光体片在暴露于刺激光线时发出的光被检测并转换为电图像信号。当任何偏转表面从其预定位置倾斜时，从由倾斜偏转表面绘制的扫描线获得的电图像信号变得不正确。根据从预定位置的倾斜量，通过对每个偏转表面预先确定的校正系数来校正由倾斜偏转表面绘制的扫描线获得的电图像信号。

9. 发明授权

US4573159A Temperature-controlled laser apparatus 失效
标题翻译：温度控制激光设备
公开(公告)号：US4573159A
公开(公告)日：1986-02-25
申请号：US630198
申请日：1984-07-12
申请人： Toshitaka Aagano , Yoshimi Takasaki
发明人： Toshitaka Aagano , Yoshimi Takasaki
IPC分类号： H01S3/04 , H01S3/041 , H01S3/08
CPC分类号： H01S3/04 , H01S3/041
摘要： A laser apparatus comprises a laser tube supported by a plurality of mounts on a supporting plate, a case housing the laser tube, temperature sensors positioned on the mounts or the supporting plate near the mounts or the laser tube, and a plurality of fans positioned on a wall of the case. The fans are positioned to generate air streams passing over the respective sections the temperatures of which are detected by the temperature sensors and operated in accordance with electric outputs of the temperature sensors, thereby maintaining the temperatures at the respective sections at a predetermined level.
摘要翻译：激光装置包括由支撑板上的多个支架支撑的激光管，容纳激光管的壳体，位于安装件上的温度传感器或靠近支架或激光管的支撑板，以及多个风扇，其位于一个墙的墙。风扇定位成产生通过各个部分的气流，其温度由温度传感器检测并根据温度传感器的电输出进行操作，从而将各部分处的温度保持在预定水平。

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