公开(公告)号：US06822771B2

公开(公告)日：2004-11-23

申请号：US10254635

申请日：2002-09-26

Applicant: Hiroyoshi Funato ,  Shigeru Oohchida

Inventor： Hiroyoshi Funato ,  Shigeru Oohchida

IPC: G02B532

CPC classification number: G11B7/1353 ,  G11B7/0901 ,  G11B7/0903 ,  G11B7/094 ,  G11B7/1275 ,  G11B7/1365 ,  G11B7/1381 ,  G11B2007/0006

Abstract: An optical pickup unit includes a light source of semiconductor laser chips of different light-emission wavelengths; a plurality of holograms placed between the light source and an optical recording medium, the holograms including at least one non-polarization hologram having a substantially uniform diffraction efficiency irrespective of the direction of polarization of incident light and at least one polarization hologram having a diffraction efficiency varying depending on the direction of polarization of incident light; and a wave plate provided between the optical recording medium and the polarization hologram. The returning beam of a light beam emitted from a selected one of the semiconductor laser chips is diffracted by the corresponding one of said holograms to be received by a light-receiving element. The wave plate turns the direction of polarization of the returning beam to a different direction from that of the emitted light beam.

Abstract translation: 光拾取单元包括不同发光波长的半导体激光芯片的光源; 放置在光源和光学记录介质之间的多个全息图，全息图包括至少一个具有基本上均匀的衍射效率的非偏振全息图，而与入射光的偏振方向无关，并且至少一个具有衍射效率的偏振全息图 根据入射光的偏振方向而变化; 以及设置在光学记录介质和偏振全息图之间的波片。 从所选择的一个半导体激光器芯片发射的光束的返回光束被相应的所述全息图衍射，以被光接收元件接收。 波片将返回光束的偏振方向与发射光束的方向不同。

公开(公告)号：US6072579A

公开(公告)日：2000-06-06

申请号：US379912

申请日：1999-08-24

Applicant: Hiroyoshi Funato

Inventor： Hiroyoshi Funato

IPC: G01B9/021

CPC classification number: G11B7/0903 ,  G01B9/021 ,  G02B5/203 ,  G11B7/0909 ,  G11B7/123 ,  G11B7/1275 ,  G11B7/131 ,  G11B7/1353 ,  G02B5/32 ,  G11B2007/0006

Abstract: An optical pickup apparatus includes first and second light sources which selectively emit one of first and second light beams, the first and second light beams being different in wavelength, the wavelengths of the first and second light beams being appropriate for accessing first and second optical disks respectively. A coupling lens converts a corresponding one of the first and second light beams into a collimated beam. An objective lens forms a light spot on a corresponding one of the first and second optical disks by focusing the collimated beam. A holographic optical element receives a reflection beam of the light spot from one of the first and second optical disks and provides holographic effects on the reflection beam so as to diffract the reflection beam in predetermined diffracting directions depending on the wavelength of the reflection beam. A photodetector receives the reflection beam from the holographic optical element at light receiving areas and outputs signals indicative of respective intensities of the received reflection beam at the light receiving areas, so that a focusing error signal and a tracking error signal are generated based on the signals.

公开(公告)号：US4987299A

公开(公告)日：1991-01-22

申请号：US397287

申请日：1989-08-23

Applicant: Hiroshi Kobayashi ,  Haruhiko Machida ,  Jun Akedo ,  Hiroyoshi Funato

Inventor： Hiroshi Kobayashi ,  Haruhiko Machida ,  Jun Akedo ,  Hiroyoshi Funato

IPC: G01D5/30 ,  G01D5/38 ,  G01P3/36 ,  G01P3/486 ,  G02B5/18

CPC classification number: G01P3/486 ,  G01P3/366 ,  G02B5/1861

Abstract: A rotation quantity measuring method and system measures a rotation quantity of an object body. The rotation quantity is measured by irradiating a light from a light source on a grating pattern which is formed on a peripheral surface of a cylindrical body which rotates integrally with the object body, and detecting a shadow picture pattern which is generated by a reflected light received from the grating pattern based on a diffraction caused by the grating pattern. Then, the rotation quantity of the object body is measured based on a movement of the shadow picture pattern as the object body rotates.

Abstract translation: 旋转量测量方法和系统测量物体的旋转量。 通过将光源照射在形成在与物体一体旋转的圆筒体的周面上形成的光栅图案上，并且检测由所接收的反射光产生的阴影图案，来测量旋转量 基于由光栅图案引起的衍射的光栅图案。 然后，基于物体旋转时的阴影图案的移动来测量物体的旋转量。

公开(公告)号：US4761046A

公开(公告)日：1988-08-02

申请号：US853780

申请日：1986-04-18

Applicant: Hiroyoshi Funato

Inventor： Hiroyoshi Funato

IPC: G02B26/10 ,  G03G15/01 ,  G06K15/12 ,  H04N1/12 ,  H04N1/203 ,  H04N1/50 ,  G02B5/32

CPC classification number: H04N1/1265 ,  G02B26/106 ,  G03G15/011 ,  G03G15/0194 ,  G06K15/1285 ,  G06K15/129 ,  H04N1/203 ,  H04N1/2038 ,  H04N1/506 ,  G03G2215/0119 ,  H04N1/12 ,  Y10S359/90

Abstract: A plurality of laser beams are applied to a scanning medium at different positions thereon and are converted thereby to respective scanning light beams. The laser beams are modulated by color image signals representative of respective differently colored images. As the scanning medium rotates, it deflects the applied laser beams and emits them as the scanning light beams. The scanning light beams are then applied to respective photosensitive bodies to scan them, forming latent images thereon which correspond to the color image signals, respectively. The latent images are developed into respective color images which are transferred and fixed to a single recording medium thereby to form a color image thereon.

Abstract translation: 多个激光束被施加到其上的不同位置的扫描介质上，并由此转换为相应的扫描光束。 激光束由表示相应不同颜色的图像的彩色图像信号调制。 当扫描介质旋转时，它使所施加的激光束偏转并将其作为扫描光束发射。 然后将扫描光束施加到相应的感光体上以对它们进行扫描，分别在其上形成与彩色图像信号对应的潜像。 将潜像显影成各自的彩色图像，这些图像被传送并固定到单个记录介质上，从而在其上形成彩色图像。

公开(公告)号：US4348080A

公开(公告)日：1982-09-07

申请号：US85486

申请日：1979-10-17

Applicant: Hiroyoshi Funato

Inventor： Hiroyoshi Funato

IPC: G02B5/32 ,  G02B26/10 ,  G02B27/17

CPC classification number: G02B26/106 ,  G02F1/33

Abstract: In an optical scanning apparatus, a hologram prepared by the interference of two rays of light, each of which has a spherical wave or one of which has a spherical wave and the other of which has a plane wave, is illuminated by a reconstruction light containing an image signal, and the reconstruction light and the hologram are moved relative to each other. A beam produced from the hologram in accordance with the relative movement of the hologram is led onto a surface to be scanned, while continuously changing its output angle, and plural beams containing image information therein, which are modulated by plural and different image signals, are caused to enter the hologram simultaneously. Plural beams are thus diffracted and plural lines on the surface to be scanned are scanned simultaneously.

Abstract translation: 在光学扫描装置中，通过具有球面波或其中一个具有球面波并且其中之一具有平面波的两束光的干涉而制备的全息图被包含 图像信号，并且重建光和全息图相对于彼此移动。 根据全息图的相对移动从全息图产生的光束被引导到待扫描的表面上，同时连续地改变其输出角度，并且其中包含由多个和不同图像信号调制的图像信息的多个光束是 导致同时进入全息图。 因此，多个光束被衍射，同时扫描待扫描表面上的多条线。

公开(公告)号：US4159166A

公开(公告)日：1979-06-26

申请号：US787411

申请日：1977-04-14

Applicant: Nobuo Kasahara ,  Hiroyoshi Funato

Inventor： Nobuo Kasahara ,  Hiroyoshi Funato

IPC: G02B9/34 ,  G02B9/60 ,  G02B13/00 ,  G02B13/24 ,  G03G15/01 ,  G02B5/20

CPC classification number: G02B9/34 ,  G02B13/00 ,  G02B13/24 ,  G02B9/60 ,  G03G15/011

Abstract: Two lens groups are arranged symmetrically on opposite sides of a mirror which may be a half-mirror or a dichroic mirror. The mirror is oriented perpendicular to the optical axis of the lens groups. A light image incident on the lens assembly at an angle to the optical axis is split into two beams, one beam being transmitted through the mirror and the other being reflected by the mirror. The refraction of the two beams is the same since the reflected beam passes through the front lens group twice. Where the mirror is dichroic the beams constitute color components of the light image above and below the cutoff wavelength of the dichroic mirror.

Abstract translation: 两个透镜组对称地布置在反射镜的相对侧上，反射镜可以是半透明反射镜或二向色镜。 镜面垂直于透镜组的光轴定向。 入射到透镜组件上与光轴成一定角度的光图像被分成两束，一束透射通过反射镜，另一束被反射镜反射。 两束光束的折射是相同的，因为反射光束通过前透镜组两次。 在反射镜是二向色的情况下，光束构成了分色镜的截止波长之上和之下的光图像的颜色分量。

公开(公告)号：US20100034563A1

公开(公告)日：2010-02-11

申请号：US12534896

申请日：2009-08-04

Applicant: Hiroyoshi Funato ,  Kazunori Bannai ,  Daisuke Imaki ,  Yoshinori Hayashi ,  Makoto Hirakawa

Inventor： Hiroyoshi Funato ,  Kazunori Bannai ,  Daisuke Imaki ,  Yoshinori Hayashi ,  Makoto Hirakawa

IPC: G03G15/04 ,  G02B26/10

CPC classification number: G02B26/123 ,  G02B26/125 ,  G02B27/283 ,  G03G15/011 ,  G03G15/04036 ,  G03G15/0435 ,  G03G2215/0404

Abstract: P-polarized light beam passing through an fθ lens passes through a polarization beam splitter, is converted into S-polarized light beam by a quarter-wave plate and a reflecting mirror, re-enters the polarization beam splitter, and is reflected at the polarization beam splitter in the −Z direction. An optical path of a light beam between a polygon mirror and the fθ lens, between the fθ lens and the polarization beam splitter, between the polarization beam splitter and the quarter-wave plate, between the quarter-wave plate and a reflecting mirror, between the reflecting mirror and the quarter-wave plate, and between the quarter-wave plate and the polarization beam splitter are in the same plane.

Abstract translation: 通过透镜透镜的P偏振光束通过偏振分束器，通过四分之一波片和反射镜转换成S偏振光束，重新进入偏振分束器，并以偏振反射 分束器在-Z方向。 在多面镜和透镜之间的光束之间的光路，在透镜和偏振分束器之间，在偏振分束器和四分之一波片之间，在四分之一波片和反射镜之间，在 反射镜和四分之一波片，四分之一波片和偏振分束器之间在同一平面内。

公开(公告)号：US06876621B2

公开(公告)日：2005-04-05

申请号：US09800586

申请日：2001-03-08

Applicant: Shigeru Ohuchida ,  Hiroyoshi Funato

Inventor： Shigeru Ohuchida ,  Hiroyoshi Funato

IPC: G02B5/18 ,  G02B5/30 ,  G02B5/32 ,  G11B7/00 ,  G11B7/125 ,  G11B7/13 ,  G11B7/135

CPC classification number: G11B7/1263 ,  G11B7/123 ,  G11B7/1275 ,  G11B7/131 ,  G11B7/1353 ,  G11B7/1362 ,  G11B7/1381 ,  G11B7/13922 ,  G11B2007/0006

Abstract: An optical pickup apparatus used in an optical data recording/reproducing apparatus for reading/reproducing data on an optical recording medium, including a light source, a diffracting device configured to transmit a light beam and to diffract a light beam reflected from the optical recording medium, an optical device having a reflecting portion and a transmitting portion configured to reflect one part of the light beam emitted from the light source and to transmit another part of the light beam to the optical recording medium and from the optical recording medium, and a photodetecting device to detect the light beam from the optical recording medium for signal light detection, and the light beam reflected by the reflecting portion of the optical device for monitor light detection of the light source.

Abstract translation: 一种光学拾取装置，用于光学数据记录/再现装置中，用于在包括光源的光学记录介质上读取/再现数据，构造成透射光束并衍射从光学记录介质反射的光束的衍射装置 ，具有反射部分和透射部分的光学器件，其被配置为反射从光源发射的光束的一部分，并将光束的另一部分传输到光学记录介质和光学记录介质，以及光电检测 用于检测来自用于信号光检测的光学记录介质的光束的装置，以及由光学装置的反射部分反射的光束，用于光源的监视光检测。

公开(公告)号：US20050058051A1

公开(公告)日：2005-03-17

申请号：US10971033

申请日：2004-10-25

Applicant: Shigeru Ohuchida ,  Hiroyoshi Funato

Inventor： Shigeru Ohuchida ,  Hiroyoshi Funato

IPC: G02B5/18 ,  G02B5/30 ,  G02B5/32 ,  G11B7/00 ,  G11B7/125 ,  G11B7/13 ,  G11B7/135

CPC classification number: G11B7/1263 ,  G11B7/123 ,  G11B7/1275 ,  G11B7/131 ,  G11B7/1353 ,  G11B7/1362 ,  G11B7/1381 ,  G11B7/13922 ,  G11B2007/0006

Abstract: An optical pickup apparatus used in an optical data recording/reproducing apparatus for reading/reproducing data on an optical recording medium, including a light source, a diffracting device configured to transmit a light beam and to diffract a light beam reflected from the optical recording medium, an optical device having a reflecting portion and a transmitting portion configured to reflect one part of the light beam emitted from the light source and to transmit another part of the light beam to the optical recording medium and from the optical recording medium, and a photodetecting device to detect the light beam from the optical recording medium for signal light detection, and the light beam reflected by the reflecting portion of the optical device for monitor light detection of the light source.

Abstract translation: 一种光学拾取装置，用于光学数据记录/再现装置中，用于在包括光源的光学记录介质上读取/再现数据，构造成透射光束并衍射从光学记录介质反射的光束的衍射装置 ，具有反射部分和透射部分的光学器件，其被配置为反射从光源发射的光束的一部分，并将光束的另一部分传输到光学记录介质和光学记录介质，以及光电检测 用于检测来自用于信号光检测的光学记录介质的光束的装置，以及由光学装置的反射部分反射的光束，用于光源的监视光检测。

公开(公告)号：US06754162B2

公开(公告)日：2004-06-22

申请号：US09897668

申请日：2001-07-02

Applicant: Kazuhiro Fujita ,  Hiroyoshi Funato ,  Hiroshi Koide

Inventor： Kazuhiro Fujita ,  Hiroyoshi Funato ,  Hiroshi Koide

IPC: G11B700

CPC classification number: G11B7/1395 ,  G11B7/0901 ,  G11B7/0948 ,  G11B7/131 ,  G11B7/1353 ,  G11B7/1378 ,  G11B7/13927 ,  G11B2007/0013

Abstract: In an optical pickup method and device of the present invention, a grating unit separates a light beam, emitted by a light source, into a 0th order diffracted beam and 1st order diffracted beams. An objective lens focuses the diffracted beams, sent from the grating unit, onto a recording surface of an optical recording medium through a transparent substrate of the medium, so that a main spot is formed on the recording surface by the 0th order diffracted beam and sub-spots, interposing the main spot therebetween, are formed on the recording surface by the 1st order diffracted beams. A reflection beam detector receives reflection beams from the main spot and the sub-spots of the medium to generate detection signals from the received reflection beams. A control unit changes a pattern of the beams incident to the objective lens to correct a spherical aberration due to a deviation of a thickness of the substrate of the medium, and moves the grating unit relative to the light source to cancel shifting of sub-spot positions on the recording surface due to the spherical aberration correction, in order to generate a proper tracking error signal.

Abstract translation: 在本发明的光拾取方法和装置中，光栅单元将由光源发射的光束分离为第0级衍射光束和一级衍射光束。 物镜将从光栅单元发送的衍射光束通过介质的透明基板聚焦到光记录介质的记录表面上，从而通过第0级衍射光束和子像素在记录表面上形成主光斑 通过1级衍射光束在记录面上形成插入其间的主光斑。 反射光束检测器接收来自主光点的反射光束和介质的子光点，以从接收的反射光束产生检测信号。 控制单元改变入射到物镜的光束的图案，以校正由于介质的基板的厚度偏差引起的球面像差，并且使光栅单元相对于光源移动以消除子点的移动 由于球面像差校正，记录表面上的位置，以便产生适当的跟踪误差信号。