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    • 1. 发明授权
    • Apparatus for measuring aberration of a lens and an apparatus for adjusting a position of the lens
    • 用于测量透镜的像差的装置和用于调节透镜位置的装置
    • US06597442B2
    • 2003-07-22
    • US09820284
    • 2001-03-29
    • Takanori MaedaToshiharu Ezuka
    • Takanori MaedaToshiharu Ezuka
    • G01B900
    • G01M11/0271G01M11/0214G01M11/0242
    • An aberration detector for easily detecting aberration of a lens in a short time period by utilizing an interferometer. The aberration detector includes a laser diode, a beam splitter for dividing a light beam into two light beams, an optical system for supporting a lens and converging a light beam passing through the lens to a converging point, a spherical mirror for reflecting the light beam passing through the lens, an image pickup element for detecting an interference pattern obtained by interference of a reference light and the light reflected on the spherical mirror, and an analyzer for analyzing the interference pattern. A center of a sphere constituting the spherical mirror is arranged in a position displaced from the converging point such that a plurality of circular fringes are concentrically arranged on the interference pattern.
    • 一种用于通过利用干涉仪在短时间内容易地检测透镜的像差的像差检测器。 像差检测器包括激光二极管,用于将光束分成两个光束的分束器,用于支撑透镜并将通过透镜的光束会聚到会聚点的光学系统,用于反射光束的球面镜 通过透镜,用于检测通过参考光的干涉和反射在球面镜上的光获得的干涉图案的图像拾取元件和用于分析干涉图案的分析器。 构成球面镜的球的中心布置在从会聚点偏移的位置,使得多个圆形条纹同心地布置在干涉图案上。
    • 4. 发明授权
    • Information memory apparatus using probe
    • 信息存储装置使用探头
    • US07945963B2
    • 2011-05-17
    • US12295022
    • 2007-03-30
    • Takanori MaedaJun SuzukiMasahiro IshimoriKenjiro FujimotoAtsushi Onoe
    • Takanori MaedaJun SuzukiMasahiro IshimoriKenjiro FujimotoAtsushi Onoe
    • G11B5/33
    • G11B9/149B82Y10/00G11B9/1436H02K7/14H02K41/03
    • A first thermal buffer layer and a second thermal buffer layer are arranged between a recording medium and an actuator structure. The heat conductivity of the first thermal buffer layer is set low and the heat conductivity of the second thermal buffer layer is set high. Most of the heat generated from a coil wiring of the actuator structure is blocked by the first thermal buffer layer, and heat leaked from the first thermal buffer layer is diffused by the second thermal buffer layer. Temperature distribution on the recording medium is made uniform, and thus, a configuration wherein the recording medium and the actuator structure are placed one over another can be provided, information reading accuracy or information recording stability can be improved and the sizes of an information storage device can be reduced.
    • 第一热缓冲层和第二热缓冲层布置在记录介质和致动器结构之间。 第一热缓冲层的导热率设定得较低,第二热缓冲层的导热率设定得较高。 由致动器结构的线圈布线产生的大部分热量被第一热缓冲层阻挡,并且从第一热缓冲层泄漏的热量被第二热缓冲层扩散。 可以提供记录介质上的温度分布均匀,因此可以提供将记录介质和致动器结构彼此放置的结构,可以提高信息读取精度或信息记录稳定性,并且可以提高信息存储装置的尺寸 可以减少
    • 6. 发明授权
    • Signal processing circuit and reproducing apparatus
    • 信号处理电路和再现装置
    • US07738351B2
    • 2010-06-15
    • US11887375
    • 2006-03-31
    • Takanori Maeda
    • Takanori Maeda
    • G11B9/00G01R31/02
    • B82Y10/00G11B9/02G11B9/1472
    • A signal processing circuit is provided with a signal input layer having a plurality of signal input sections which receive signal input; a plurality of signal processing layers whereupon a plurality of signal processing sections, which are arranged corresponding to each of the signal input sections and processes in parallel signals from the signal input sections, are dispersed; and connecting lines for associating and connecting the signal input sections with the signal processing sections, respectively. The size of a region occupied by each of the signal processing sections on the signal processing layers is larger than the arrangement intervals between the signal input sections on the signal input layers.
    • 信号处理电路设置有具有接收信号输入的多个信号输入部分的信号输入层; 多个信号处理层,其中分散对应于每个信号输入部分并且处理来自信号输入部分的并行信号的多个信号处理部分; 以及用于将信号输入部分与信号处理部分相关联并连接的连接线。 信号处理层上的每个信号处理部分占据的区域的大小大于信号输入层上的信号输入部分之间的排列间隔。
    • 7. 发明申请
    • PHYSICAL PROPERTIES DETECTION DEVICE AND PHYSICAL PROPERTIES DETECTION METHOD
    • 物理特性检测装置和物理特性检测方法
    • US20100033159A1
    • 2010-02-11
    • US12532129
    • 2007-03-20
    • Kiyoshi TateishiTakanori MaedaHideki KobayashiTomotaka Yabe
    • Kiyoshi TateishiTakanori MaedaHideki KobayashiTomotaka Yabe
    • G01N27/00
    • G11B9/02G11B9/06
    • A physical properties detection device comprising a probe to be placed near or touching a surface of a ferroelectric; an oscillation loop including the probe and capacitance within the ferroelectric; and detection means for detecting a physical properties of the ferroelectric on the basis of a frequency variation of a measurement signal generated in the oscillation loop, the frequency variation accompanying application of an alternating electric field to the ferroelectric; and the physical properties detection device is further comprising frequency conversion means for converting the frequency of the measurement signal to a low frequency and outputting the resulting signal as a converted measurement signal; frequency control means for controlling the frequency of the converted measurement signal so as to match a target frequency; frequency detection means for generating a frequency detection signal that has a signal level corresponding to the frequency of the converted measurement signal; and synchronous detection means for synchronously detecting the frequency detection signal on the basis of a synchronization signal.
    • 一种物理特性检测装置,包括放置在铁电体表面附近或接触铁电体的探针; 包括铁电体内探针和电容的振荡回路; 以及检测装置,用于基于在振荡环路中产生的测量信号的频率变化,伴随向铁电体施加交变电场的频率变化来检测铁电体的物理性质; 物理特性检测装置还包括频率转换装置,用于将测量信号的频率转换为低频,并将所得信号作为转换的测量信号输出; 频率控制装置,用于控制转换的测量信号的频率以便匹配目标频率; 频率检测装置,用于产生具有与转换的测量信号的频率对应的信号电平的频率检测信号; 以及用于基于同步信号同步检测频率检测信号的同步检测装置。
    • 8. 发明申请
    • Driving apparatus
    • 驱动装置
    • US20090217425A1
    • 2009-08-27
    • US11989295
    • 2006-07-26
    • Takanori Maeda
    • Takanori Maeda
    • G01N13/10
    • G11B9/1454G01Q80/00G11B9/02
    • A driving apparatus is provided with: a stage structure on which a medium having a small recording domain is mounted; and a facing structure which is provided with at least one small action structure, which faces the medium, for performing a predetermined action to the medium, and which is displaced relatively on a predetermined flat surface with respect to the stage structure, the facing structure comprising a facing-side position detecting unit for detecting a relative reference position of the facing structure with respect to the stage structure, the stage structure comprising a stage-side position detecting unit for detecting a relative reference position of the facing structure with respect to the stage structure.
    • 一种驱动装置具有:其上安装有具有小记录域的介质的平台结构; 以及设置有面向介质的至少一个小动作结构的面向结构,用于对介质执行预定动作,并相对于相对于舞台结构在预定的平坦表面上相对移位,所述面对结构包括 面对侧位置检测单元,用于检测面对结构相对于平台结构的相对参考位置,所述平台结构包括台侧位置检测单元,用于检测面向结构相对于平台的相对参考位置 结构体。
    • 10. 发明授权
    • Information recording and reproducing apparatus
    • 信息记录和再现装置
    • US06839313B2
    • 2005-01-04
    • US10067770
    • 2002-02-08
    • Yoshitsugu ArakiTakanori Maeda
    • Yoshitsugu ArakiTakanori Maeda
    • G11B7/00G11B7/09G11B7/135
    • G11B7/094G11B7/0901G11B7/1378G11B2007/0013
    • An information recording and reproducing apparatus for optically recording/reproducing information to/from a two-layer optical disk comprises a cylindrical lens, which gives astigmatism to a reflected light from a target information recording layer, two caustic curve positions are arranged in the front and in the rear of the optical detector, and an unnecessary reflected light from an another information recording layer has two caustic curve positions arranged in the rear of the optical detector. In this condition, assuming an astigmatism direction of the cylindrical lens is inclined at 45 degree angle to a track direction, a projected image of the target information recording layer is inclined at 90 degree angle to an another projected image of the another information recording layer in a light receiving surface of the optical detector.
    • 用于向/从双层光盘记录/再现信息的信息记录和再现装置包括一个柱面透镜,其对来自目标信息记录层的反射光进行散光,在前面设置两个苛性曲线位置, 在光检测器的后部,并且来自另一个信息记录层的不必要的反射光具有布置在光学检测器后部的两个苛性曲线位置。 在这种情况下,假设柱面透镜的像散方向与轨道方向呈45度角倾斜,目标信息记录层的投影图像与另一信息记录层的另一个投影图像成90度角倾斜 光检测器的光接收表面。