公开(公告)号：US6114621A

公开(公告)日：2000-09-05

申请号：US924651

申请日：1997-09-05

申请人： Masumi Tachino ,  Hidehiro Kume ,  Suenori Kimura ,  Takashi Goto

发明人： Masumi Tachino ,  Hidehiro Kume ,  Suenori Kimura ,  Takashi Goto

IPC分类号： H01J43/04 ,  H01J43/28 ,  H05K9/00

CPC分类号： H01J43/04 ,  H01J43/28

摘要： The present invention relates to a magnetic shielding case comprising a structure for improving the uniformity in light receiving sensitivity of a phomultiplier while maintaining sufficient magnetic shielding function, and a light detecting apparatus including this magnetic shielding case. This apparatus comprises a photomultiplier and a magnetic shielding case accommodating the photomultiplier. In particular the magnetic shielding case comprises a housing having an opening for transmitting therethrough light to be detected which is directed to the photomultiplier; a lens element for guiding the light to be detected into an effective region on a photocathode; and a positioning structure for placing the photomultiplier at a desired position with respect to the lens element.

摘要翻译： 本发明涉及一种磁屏蔽壳体，其包括用于在保持足够的磁屏蔽功能的同时提高光电倍增管的光接收灵敏度的均匀性的结构，以及包括该磁屏蔽壳体的光检测装置。 该装置包括光电倍增管和容纳光电倍增管的磁屏蔽壳。 特别地，磁屏蔽壳包括具有用于透射被检测光的开口的壳体，其被引导到光电倍增管; 用于将被检测光引导到光电阴极的有效区域中的透镜元件; 以及用于将光电倍增管放置在相对于透镜元件的期望位置的定位结构。

公开(公告)号：US5864207A

公开(公告)日：1999-01-26

申请号：US879052

申请日：1997-06-19

申请人： Hidehiro Kume ,  Suenori Kimura

发明人： Hidehiro Kume ,  Suenori Kimura

IPC分类号： H01J43/28

CPC分类号： H01J43/28

摘要： A photomultiplier includes a photocathode (3); an electron multiplier section (60) for cascade-multiplying photoelectrons emitted from the photocathode (3); a faceplate (2) provided with the photocathode (3); a metal housing (1) accommodating the photocathode (3) and the electron multiplier section (60); and a structure disposed on the faceplate (2) for increasing the effective light entrance region of the faceplate (2). In a preferred embodiment the subject structure includes a lens element (30) attached to the faceplate for increasing the effective light entrance region of the faceplate (2). In order to improve the optical coupling efficiency, either the faceplate (2), or the lens element (30), or both the faceplate (2) and the lens element (30) may further include a protrusion.

摘要翻译： 光电倍增管包括光电阴极（3）; 用于从光电阴极（3）发射的用于级联乘法光电子的电子倍增器部分（60）; 设置有光电阴极（3）的面板（2）; 容纳所述光电阴极（3）和所述电子倍增部（60）的金属壳体（1）。 以及设置在面板（2）上用于增加面板（2）的有效光入射区域的结构。 在优选实施例中，被摄体结构包括附接到面板的透镜元件（30），用于增加面板（2）的有效光入射区域。 为了提高光耦合效率，面板（2）或透镜元件（30）或者面板（2）和透镜元件（30）两者都可以进一步包括突起。

公开(公告)号：US5181195A

公开(公告)日：1993-01-19

申请号：US700866

申请日：1991-05-16

申请人： Hidehiro Kume ,  Etsufumi Yamamoto

发明人： Hidehiro Kume ,  Etsufumi Yamamoto

IPC分类号： G11B7/095 ,  G11B7/09

CPC分类号： G11B7/0943

摘要： A tracking error signal generator for producing a tracking error signal by first detecting a light beam, which is irradiated from an optical pickup to an optical disc, by an optical detector so divided as to have two optical detecting portions in a direction of a recording track on the optical disc, and then controlling the light beam to follow the recording track on the optical disc in accordance with the detection outputs from the divided optical detector. The tracking error signal generator comprises first and second peak detecting means for detecting the respective peak values of detection output signals from the first and second optical detecting portions of the optical detector divided along the recording track on the optical disc, and arithmetic means for forming a difference signal between signals obtained by applying a coefficient smaller than 1 to multiply respectively the output signal of the first peak detecting means and the detection output of the first optical detecting portion, and signals obtained by applying a coefficient smaller than 1 to multiply respectively the output signal of the second peak detecting means and the detecting output of the second optical detecting portion.

公开(公告)号：US4873429A

公开(公告)日：1989-10-10

申请号：US152007

申请日：1988-02-03

申请人： Hidehiro Kume ,  Yoshiyuki Matsumoto ,  You Yoshitoshi

发明人： Hidehiro Kume ,  Yoshiyuki Matsumoto ,  You Yoshitoshi

IPC分类号： G11B7/09 ,  G11B7/135

CPC分类号： G11B7/1381 ,  G11B7/094 ,  G11B7/1356 ,  G11B7/0912

摘要： An optical pickup head comprising a substrate on which a optical sensor is formed, and an optical member adhered on said optical sensor on said substrate by an adhesive and including a semitransmissive reflective film adapted to reflect the light emitting from a laser source and to transmit the light returned from a second medium of a disk, characterized in that the refractive index of said optical member is set so as to be larger than the refractive index of said adhesive.

公开(公告)号：US20070115479A1

公开(公告)日：2007-05-24

申请号：US11654815

申请日：2007-01-18

申请人： Hideaki Tamiya ,  Kayoko Taniguchi ,  Akihiro Kuroda ,  Hidehiro Kume

发明人： Hideaki Tamiya ,  Kayoko Taniguchi ,  Akihiro Kuroda ,  Hidehiro Kume

IPC分类号： G01B9/02

CPC分类号： G01D5/38

摘要： A displacement detection device having excellent stability with the lapse of time and suitable for reduction in size and weight includes: a light source for emitting light; polarizing light splitting unit for splitting the light emitted from the light source into two light beams having difference polarized components, radiating the two light beams to an external optical system, and combining the two light beams reflected by the external optical system to generate combined light; a phase plate provided between the light source and the polarizing light splitting unit and adapted for changing the polarization state of the light emitted from the light source and leading the light to the polarizing light splitting unit; light splitting films for splitting the combined light generated by the polarizing light splitting unit into plural light beams; polarizing units for transmitting only a predetermined polarized components of the split combined light beams; and light-receiving elements for photoelectrically converting coherent light beams transmitted through the polarizing units and thus generating an interference signal.

摘要翻译： 具有优异的时间稳定性和适合于减小尺寸和重量的位移检测装置包括：用于发光的光源; 偏振光分离单元，用于将从光源发射的光分成具有差分偏振分量的两个光束，将两个光束照射到外部光学系统，并且组合由外部光学系统反射的两个光束以产生组合光; 设置在所述光源和所述偏振光分离单元之间的相位板，用于改变从所述光源发射的光的偏振状态并将光引导到所述偏振光分离单元; 用于将由偏振光分离单元产生的组合光分离成多个光束的分光膜; 用于仅透射分离的组合光束的预定偏振分量的偏振单元; 以及用于光电转换透射通过偏振单元的相干光束并由此产生干涉信号的光接收元件。

公开(公告)号：US4897828A

公开(公告)日：1990-01-30

申请号：US219916

申请日：1988-07-15

申请人： You Yoshitoshi ,  Hidehiro Kume ,  Yoshiyuki Matsumoto ,  Koji Mitsumori ,  Etsufumi Yamamoto ,  Hiroshi Oinoue

发明人： You Yoshitoshi ,  Hidehiro Kume ,  Yoshiyuki Matsumoto ,  Koji Mitsumori ,  Etsufumi Yamamoto ,  Hiroshi Oinoue

IPC分类号： G02B7/28 ,  G11B7/09 ,  G11B7/12 ,  G11B7/13 ,  G11B7/135

CPC分类号： G11B7/1356 ,  G11B7/0912 ,  G11B7/123 ,  G11B7/13

摘要： A focusing error detecting apparatus having a first photo-detector of which the light receiving portion is halved to provide first and second light receiving portions asymmetrical with respect to the center of a beam spot of a bundle of incident laser beams, the first photo-detector being located in the optical path ahead of the focusing point of the bundle of the incident laser beams, a second photo-detector of which the light receiving portion is halved to provide first and second light receiving portions asymmetrical with respect to the center of a beam spot of a bundle of incident laser beams, the second photo-detector being located in the optical path behind a focussing point of the bundle of the incident laser beams and a calculating circuit for calculating a difference between a difference of detected outputs from the first and second light receiving portions of the first photo-detector and a difference of detected outputs from the first and second light receiving portions of the second photo-detector, thereby to derive a focusing error signal from the output of the calculating circuit.

公开(公告)号：US07187449B2

公开(公告)日：2007-03-06

申请号：US10414860

申请日：2003-04-15

申请人： Hideaki Tamiya ,  Kayoko Taniguchi ,  Akihiro Kuroda ,  Hidehiro Kume

发明人： Hideaki Tamiya ,  Kayoko Taniguchi ,  Akihiro Kuroda ,  Hidehiro Kume

IPC分类号： G01B9/02

CPC分类号： G01D5/38

摘要： A displacement detection device having excellent stability with the lapse of time and suitable for reduction in size and weight includes: a light source for emitting light; polarizing light splitting unit for splitting the light emitted from the light source into two light beams having difference polarized components, radiating the two light beams to an external optical system, and combining the two light beams reflected by the external optical system to generate combined light; a phase plate provided between the light source and the polarizing light splitting unit and adapted for changing the polarization state of the light emitted from the light source and leading the light to the polarizing light splitting unit; light splitting films for splitting the combined light generated by the polarizing light splitting unit into plural light beams; polarizing units for transmitting only a predetermined polarized components of the split combined light beams; and light-receiving elements for photoelectrically converting coherent light beams transmitted through the polarizing units and thus generating an interference signal.

公开(公告)号：US5727111A

公开(公告)日：1998-03-10

申请号：US661460

申请日：1996-06-11

申请人： Hidehiro Kume ,  Kimihiro Saito ,  Shuzo Sato ,  Takeshi Kubo

发明人： Hidehiro Kume ,  Kimihiro Saito ,  Shuzo Sato ,  Takeshi Kubo

IPC分类号： G02B6/42 ,  G11B7/09 ,  G11B7/12 ,  G11B7/13 ,  G11B7/135 ,  G02B6/00 ,  G11B7/00

CPC分类号： G11B7/1359 ,  G02B6/4214 ,  G11B7/123 ,  G11B7/131 ,  G11B7/1362 ,  G11B2007/13727 ,  G11B7/0912

摘要： A light-deflecting cover for an optical pick-up apparatus has a reflecting portion disposed within a light path of a light beam projected from a light source or light returning from outside the apparatus for deflecting an optical beam for bending the light path. The light deflecting part of the cover is provided with a light absorbing portion for removing unnecessary light which does not contribute to the operating characteristics of optical equipment within which the light deflecting part is provided. The optical pick-up comprises a light-emitting and detecting device, an optical system for focusing and projecting a laser light outputted from the light-emitting and detecting device onto a signal recording surface of an optical disc, and guiding light returning from the signal recording surface of the optical disc to the light-emitting and detecting device and a light deflecting part having a reflecting portion disposed in the light path of the light system for deflecting the light beam for bending the light path, the light deflecting part comprising a light absorbing portion for removing unnecessary light which does not contribute to the operating characteristics of the optical pick-up in which the light deflecting part is provided.

摘要翻译： 用于光学拾取装置的光偏转盖具有设置在从光源投射的光束的光路中的反射部分或从设备外部返回的光，用于偏转用于弯曲光路的光束。 盖的光偏转部分设置有光吸收部分，用于去除不对其中提供光偏转部分的光学设备的操作特性有贡献的不必要的光。 光拾取器包括发光和检测装置，用于将从发光和检测装置输出的激光聚焦并投射到光盘的信号记录表面上的光学系统，以及引导从信号返回的光 将光盘的记录表面传送到发光和检测装置，以及光偏转部分，其具有设置在光系统的光路中的反射部分，用于偏转光束以弯曲光路，光偏转部分包括光 吸收部分，用于去除不影响设置有光偏转部分的光学拾取器的操作特性的不必要的光。

公开(公告)号：US5541899A

公开(公告)日：1996-07-30

申请号：US415086

申请日：1995-03-31

申请人： Hidehiro Kume ,  Koji Mitsumori ,  Tomoyuki Ishida

发明人： Hidehiro Kume ,  Koji Mitsumori ,  Tomoyuki Ishida

IPC分类号： G11B7/09 ,  G11B7/12 ,  G11B7/00

CPC分类号： G11B7/12 ,  G11B7/0932 ,  G11B7/0933 ,  G11B7/0935

摘要： An objective lens drive device has a supporting member to which an objective lens is attached. The supporting member is freely translated in a direction parallel to the optical axis of the objective lens and in a plane perpendicular to the optical axis. The supporting member is attached a stationary portion, and a magnetic circuit provided on the supporting member forms a closed magnetic path. A focusing coil and a plurality of tracking coils attached to the focusing coil drive the objective lens in cooperation with the magnetic circuit so that the objective lens is translated in the direction parallel to the optical axis and in the direction perpendicular to the optical axis. The focusing coil and the tracking coils are mounted on the stationary portion so as to oppose the magnetic circuit with a predetermined spacing therebetween.

摘要翻译： 物镜驱动装置具有安装有物镜的支撑部件。 支撑构件在与物镜的光轴平行的方向上和垂直于光轴的平面中自由平移。 支撑构件附接有固定部分，并且设置在支撑构件上的磁路形成闭合磁路。 聚焦线圈和附接到聚焦线圈的多个跟踪线圈与磁路一起驱动物镜，使得物镜在平行于光轴的方向上并且在垂直于光轴的方向上平移。 聚焦线圈和跟踪线圈安装在固定部分上，以便以其间的预定间隔与磁路相对。

公开(公告)号：US5521394A

公开(公告)日：1996-05-28

申请号：US319104

申请日：1994-10-06

申请人： Noriko Nakanishi ,  Hidehiro Kume

发明人： Noriko Nakanishi ,  Hidehiro Kume

IPC分类号： G01B11/00 ,  G01B11/02 ,  G01C3/06 ,  G01D5/26 ,  G01N21/86

CPC分类号： G01D5/26 ,  G01B11/026

摘要： A displacement detecting system comprises an optical detector which includes a one-chip optical IC having a laser light source, light receiving elements for generating, in response to laser light reflected by a surface to be measured, a focus error signal indicative of a deviation of a distance between the surface and an objective lens from a focal length thereof, and a prism.

摘要翻译： 位移检测系统包括光检测器，其包括具有激光光源的单芯片光IC，响应于待测表面反射的激光产生指示偏差的聚焦误差信号的光接收元件 表面和物镜之间的距离其焦距和棱镜的距离。