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    • 1. 发明授权
    • Optical device with improved focused error detection and tracing error
detection for optical disk drive
    • 具有改进的光盘驱动器的聚焦误差检测和跟踪误差检测的光学装置
    • US5754503A
    • 1998-05-19
    • US749231
    • 1996-11-14
    • Satoshi SenbaShinya HasegawaHiroyasu YoshikawaFumihiro Tawa
    • Satoshi SenbaShinya HasegawaHiroyasu YoshikawaFumihiro Tawa
    • G11B7/09G11B7/135G11B7/00
    • G11B7/1353G11B7/0908G11B7/0916
    • An optical device for an optical disk drive, for performing focusing error detection and tracking error detection of a laser beam converged on an optical disk. The optical device includes a diffraction grating having first, second, third, and fourth regions for diffracting a reflected beam from the optical disk in different directions. The optical device further includes a first photodetector for detecting a part of the reflected beam diffracted by the first region of the diffraction grating, a second photodetector for detecting a part of the reflected beam diffracted by the second region of the diffraction grating, a third photodetector for detecting a part of the reflected beam diffracted by the third region of the diffraction grating, and a fourth photodetector for detecting a part of the reflected beam diffracted by the fourth region of the diffraction grating. The shape and size of each of the first and second regions of the diffraction grating are optimally controlled to thereby increase a quantity of light incident on the photodetectors for focusing error detection.
    • 一种用于光盘驱动器的光学装置,用于执行会聚在光盘上的激光束的聚焦误差检测和跟踪误差检测。 光学装置包括具有第一,第二,第三和第四区域的衍射光栅,用于沿不同方向衍射来自光盘的反射光束。 光学装置还包括第一光电检测器,用于检测由衍射光栅的第一区域衍射的部分反射光束;第二光电检测器,用于检测由衍射光栅的第二区域衍射的部分反射光束;第三光电检测器 用于检测由衍射光栅的第三区域衍射的一部分反射光束;以及第四光电检测器,用于检测由衍射光栅的第四区域衍射的部分反射光束。 最佳地控制衍射光栅的第一和第二区域的形状和尺寸,从而增加入射到用于聚焦误差检测的光电探测器上的光量。
    • 2. 发明授权
    • Information reading and writing device for optical disk
    • 光盘信息读写装置
    • US06243334B1
    • 2001-06-05
    • US09177561
    • 1998-10-23
    • Shinya HasegawaHiroyasu Yoshikawa
    • Shinya HasegawaHiroyasu Yoshikawa
    • G11B7135
    • G11B7/131G11B7/0901G11B7/0908G11B7/0916G11B7/094G11B7/123G11B7/1353G11B7/22
    • The present invention relates to an information reading and writing device for an optical signal, and the optical system is simplified by using a diffraction optical element. A semiconductor laser is used as a light source. There is provided an image formation lens for condensing a beam of light and forming an image on an optical disk medium. In an optical path between the semiconductor laser and the image formation lens, there is provided a hologram having a function of the hologram region diffraction optical element for detecting a tracking error signal of the medium and a focus detection error signal. Two optical detecting elements 24a, 24b for detecting the focus error respectively have two divided regions. Under the condition that the medium is in focus, beams of light diffracted in the two hologram regions 23a, 23b for detecting the focus become the convergent beams which are most converged on a dividing line of the respective optical detecting element and in the direction of the optical axis. The beams of light on two optical detecting elements are in a condition of substantial point symmetry with respect to the central axis of the hologram.
    • 本发明涉及一种用于光信号的信息读写装置,通过使用衍射光学元件来简化光学系统。 半导体激光器用作光源。 提供了一种用于聚集光束并在光盘介质上形成图像的图像形成透镜。 在半导体激光器和图像形成透镜之间的光路中,提供了具有用于检测介质的跟踪误差信号的全息区域衍射光学元件的功能的全息图和焦点检测误差信号。 用于检测聚焦误差的两个光学检测元件24a,24b分别具有两个分割区域。 在介质聚焦的条件下,在用于检测聚焦的两个全息图区域23a,23b中衍射的光束成为最聚焦在各个光学检测元件的分割线上并沿着该方向的收敛光束 光轴。 两个光学检测元件上的光束相对于全息图的中心轴处于基本点对称的状态。
    • 4. 发明授权
    • Optical element utilized for optical storage unit and optical device
including the optical element
    • 用于光学存储单元的光学元件和包括光学元件的光学装置
    • US5745265A
    • 1998-04-28
    • US597710
    • 1996-02-07
    • Shinya HasegawaKohichi TezukaHiroyasu Yoshikawa
    • Shinya HasegawaKohichi TezukaHiroyasu Yoshikawa
    • G11B11/10G02B5/32G11B7/09G11B7/12G11B7/135G11B11/105G02B5/18
    • G11B7/1359G02B5/32G11B11/10545G11B7/0908G11B7/0916G11B7/123G11B7/1353G11B7/1365
    • An optical element for writing and reading signals for an optical storage unit, and an optical device including the optical element, include an optical substrate made of a material allowing the transmission of a laser beam emitted from a semiconductor laser and disposed between the semiconductor laser and an optical storage medium; a first hologram formed on the optical substrate in such a manner as to transmit the laser beam, and to allow it to be incident into the optical storage medium and to diffract the laser beam reflected by the optical storage medium inside the optical substrate; and a second hologram formed on the optical substrate in such a manner as to transmit one polarization component of the laser beam diffracted by the first hologram and propagating inside the optical substrate, to diffract the other polarization component and to thus separate both polarization components. A signal representing the state of the optical storage medium is detected by detecting the difference of the intensities between the polarization components so separated.
    • 一种用于写入和读取用于光学存储单元的信号的光学元件和包括该光学元件的光学装置,包括由能够透射从半导体激光器发射的激光束并且设置在半导体激光器和 光学存储介质; 形成在光学基板上的方式发射激光束的第一全息图,并允许其入射到光学存储介质中并将由光学存储介质反射的激光束衍射到光学基板内部; 以及形成在光学基板上的第二全息图,以便透射由第一全息图衍射并在光学基板内传播的激光束的一个偏振分量,以衍射另一个偏振分量,从而分离两个偏振分量。 通过检测如此分离的偏振分量之间的强度差来检测表示光存储介质的状态的信号。
    • 5. 发明授权
    • Electromagnetic wave imaging apparatus
    • 电磁波成像装置
    • US09204063B2
    • 2015-12-01
    • US13251670
    • 2011-10-03
    • Norihiko ItaniKazunori MaruyamaShinya Hasegawa
    • Norihiko ItaniKazunori MaruyamaShinya Hasegawa
    • H04N7/18H04N5/335H04N5/30G01S7/481G01S17/89G02F1/03G01N21/3581
    • H04N5/30G01N21/3581G01S7/4811G01S17/89G02F1/03G02F2203/13
    • A first optical system irradiates a target with a detecting wave and making the detecting wave that is transmitted through the target incident upon the electrooptical crystal. A second optical system slants a pulse plane of a probe wave relative to a pulse plane of the detecting wave and making the probe wave incident upon the electrooptical crystal. A camera detects the probe wave passing through the electrooptical crystal. The first or second optical system includes a compensating component which partitions a beam cross section of the detecting wave or the probe wave into unit areas. The optical component makes different an optical path length of a beam passing each unit area and compensates a phase shifting between the pulse plane of the detecting wave and the pulse plane of the probe wave at positions in a crossing direction of a surface of the electrooptical crystal and the virtual plane.
    • 第一光学系统用检测波照射目标,并使通过目标传输的检测波入射到电光学晶体上。 第二光学系统相对于检测波的脉冲平面倾斜探测波的脉冲平面,并使探针波入射到电光学晶体上。 摄像机检测穿过电光晶体的探测波。 第一或第二光学系统包括将检测波或探测波的束横截面分隔成单位区域的补偿部件。 光学部件使通过每个单位面积的光束的光程长度不同,并且补偿检测波的脉冲平面与探针波的脉冲平面之间在电光水晶表面的交叉方向的位置处的相移 和虚拟平面。
    • 7. 发明授权
    • Dialysis apparatus
    • 透析仪
    • US08608680B2
    • 2013-12-17
    • US13565123
    • 2012-08-02
    • Shinya HasegawaKensaku Tanaka
    • Shinya HasegawaKensaku Tanaka
    • A61M37/00
    • A61M1/342A61M1/3434A61M1/3437A61M1/3465A61M1/3646A61M1/3649
    • A dialysis apparatus has a dialysate infusing line. One end of the dialysate infusing line is connected to the dialysate introducing line or the dialysate discharging line. The other end is branched out at a branch point into two flow routes, respectively, a first branch end and a second branch end. The first branch end is connectable to the arterial blood circuit or the venous blood circuit. The second branch end is connectable to the tip end of the arterial blood circuit during the blood-returning process. A dialysate infusing pump is arranged on the dialysate infusing line at a connection-side of the dialysate infusing line relative to the dialysate introducing line or the dialysate discharging line from the branch point. The dialysate infusing pump supplies the dialysate of the dialysate introducing line or the dialysate discharging line to the first branch end and the second branch end.
    • 透析装置具有透析液输注线。 透析液输注线的一端与透析液导入管或透析液排出管连接。 另一端在分支点处分别分成两条流动路线,分别是第一分支端和第二分支端。 第一分支端可连接到动脉血回路或静脉血回路。 第二分支端在血液返回过程中可连接到动脉血回路的末端。 在透析液注入线的透析液输注线上,相对于透析液导入管或透析液排出管从分支点配置透析液输注泵。 透析液输注泵将透析液引入管线或透析液排出管的透析液供给到第一分支端和第二分支端。
    • 10. 发明授权
    • Inflator
    • 气筒
    • US07954848B2
    • 2011-06-07
    • US12659851
    • 2010-03-23
    • Shinichi HayakawaToru OzakiYasushi MasudaHiroyuki OchiShinya HasegawaHirotaka Mukunoki
    • Shinichi HayakawaToru OzakiYasushi MasudaHiroyuki OchiShinya HasegawaHirotaka Mukunoki
    • B60R21/26
    • B60R21/2646B60R2021/2648
    • An inflator includes in a combustion chamber a first gas generating charge and a second gas generating charge to be ignited and burned to generate an inflation gas. The second gas generating charge is slower in speed of combustion than the first gas generating charge. The inflator further includes a partition wall that segregates the first and second gas generating charges. The partition wall is located away from an ignition area of an ignition device that ignites the first gas generating charge, with the first gas generating charge located between itself and the ignition area. The partition wall is burnable to destruction by the fire generated by combustion of the first gas generating charge so as to permit propagation of the fire to the second gas generating charge by its generally entire area.
    • 充气机在燃烧室中包括第一气体发生装置和第二气体产生装置,其被点燃和燃烧以产生充气气体。 第二气体发生装置的燃烧速度比第一气体发生装置慢。 充气机还包括隔离第一和第二气体产生装置的分隔壁。 分隔壁远离点火装置的点火区域,点火装置点燃第一气体产生装置,其中第一气体发生装置位于其自身与点火区域之间。 分隔壁可被第一气体发生装置的燃烧产生的火焰所破坏,从而允许火焰通过其大致整个区域传播到第二气体产生装置。