公开(公告)号：US06618344B1

公开(公告)日：2003-09-09

申请号：US09494549

申请日：2000-01-31

Applicant: Hiroyoshi Funato

Inventor： Hiroyoshi Funato

IPC: G11B7135

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

Abstract translation: 一种光学拾取装置包括：第一和第二光源，其选择性地发射第一和第二光束中的一个，第一和第二光束的波长不同，第一和第二光束的波长适合于访问第一和第二光盘 分别。 耦合透镜将第一和第二光束中的相应一个光束转换为准直光束。 物镜通过聚焦准直光束在相应的第一和第二光盘上形成光点。 全息光学元件从第一和第二光盘之一接收光点的反射光束，并且在反射光束上提供全息效果，以便根据反射光束的波长在预定的衍射方向衍射反射光束。 光接收器在光接收区域处接收来自全息光学元件的反射光束，并输出表示在光接收区域处的接收反射光束的各自强度的信号，从而基于信号产生聚焦误差信号和跟踪误差信号 。

公开(公告)号：US5355220A

公开(公告)日：1994-10-11

申请号：US931511

申请日：1992-08-21

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

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

IPC: G01D5/38 ,  G01P3/36 ,  G01B9/02

CPC classification number: G01D5/38 ,  G01P3/36

Abstract: An optical movement measuring method and apparatus measures a movement of an object. A light from a light source is irradiated on a diffraction grating which is provided on the object so as to generate diffracted lights of different order of diffraction. The diffraction grating has light transmitting portions and light blocking portions which are alternately and periodically arranged. Interference fringes which comprises bright and dark stripes which occur alternately and are generated by overlapping spots of diffracted lights of different order of diffraction are detected, and a movement of the object is measured based on a counted number of stripes of the detected interference fringes.

Abstract translation: 光学运动测量方法和装置测量物体的运动。 来自光源的光照射在设置在物体上的衍射光栅上，以便产生不同衍射次数的衍射光。 衍射光栅具有交替且周期性排列的透光部和遮光部。 检测出交替出现并由不同衍射次数的衍射光的重叠点产生的亮条纹的干涉条纹，并且基于检测到的干涉条纹的条纹数量来测量物体的移动。

公开(公告)号：US5333231A

公开(公告)日：1994-07-26

申请号：US876042

申请日：1992-04-30

Applicant: Hiroaki Fukuda ,  Hiroyoshi Funato ,  Shigeyoshi Misawa

Inventor： Hiroaki Fukuda ,  Hiroyoshi Funato ,  Shigeyoshi Misawa

IPC: G02B6/12 ,  G02F1/377 ,  G02B6/10 ,  H01S3/10

CPC classification number: G02F1/3775 ,  G02B2006/12045 ,  G02B2006/12142

Abstract: A wavelength conversion element includes a substrate made of LiTaO.sub.3 of non-linear medium, a three-dimensional waveguide formed in the substrate and a second harmonic generation portion for defining a change in refractive index in the waveguide with a period .LAMBDA. and generating a second harmonic of a fundamental wave introduced into the wave guide, where .LAMBDA.=2m.pi./{.beta.(2.omega.)-2.beta.(.omega.)}, m is a natural number, .omega. is a frequency of fundamental harmonic, .beta.(.omega.) is a propagation constant of the fundamental wave, and .beta.(2.omega.) is a propagation constant of second harmonic.

Abstract translation: 波长转换元件包括由非线性介质的LiTaO 3构成的衬底，形成在衬底中的三维波导和用于限定波长中的折射率随时间LAMBDA产生二次谐波的二次谐波产生部分 引入到波导中的基波，其中LAMBDA = 2m pi / {β（2ω）-2β（ω）），m是自然数，ω是基波的频率，β（ω）是 基波的传播常数，β（2ω）是二次谐波的传播常数。

公开(公告)号：US5195071A

公开(公告)日：1993-03-16

申请号：US479455

申请日：1990-02-13

Applicant: Hiroyoshi Funato ,  Shigeyoshi Misawa

Inventor： Hiroyoshi Funato ,  Shigeyoshi Misawa

IPC: G11B7/09 ,  G11B7/12 ,  G11B7/13 ,  G11B7/135

CPC classification number: G11B7/131 ,  G11B7/0908 ,  G11B7/0917 ,  G11B7/124 ,  G11B7/1353 ,  G11B7/1362 ,  G11B7/1372

Abstract: An optical head for detecting defocuses of a target comprises a waveguide element having a substrate and an optical waveguide layer formed thereon. An optical coupler and one or more pairs of photodetectors are integrated with the waveguide layer. Light reflected back from the target is coupled with the waveguide layer through the coupler and then waveguided toward the photodetectors while being collected. Each of the photodetectors can detect the waveguided light so that a focus error signal can be obtained from the difference of the outputs of the photodetectors. The photodetectors of each pair are spaced from each other in a propagation direction of the waveguide layer so that one of the photodetectors can block off a fraction of the waveguided light from the other photodetector when the target surface is in focus. In another form, two pairs of photodetectors are spaced forward and rearward from the focused position of the waveguided light, respectively, with respect to a propagation direction of the waveguide layer so as to receive different portions of the waveguided light.

Abstract translation: 用于检测目标的散焦的光学头包括具有衬底和形成在其上的光波导层的波导元件。 光耦合器和一对或多对光电检测器与波导层集成。 从目标反射回来的光通过耦合器与波导层耦合，然后在被收集时向光电探测器波导。 每个光电检测器可以检测波导光，从而可以根据光电检测器的输出的差异获得聚焦误差信号。 每对的光检测器在波导层的传播方向上彼此间隔开，使得当目标表面聚焦时，一个光电检测器可以阻挡来自另一个光电检测器的一部分波导光。 在另一种形式中，两对光电检测器相对于波导层的传播方向分别从波导管的聚焦位置向前和向后隔开，以便接收波​​导光的不同部分。

公开(公告)号：US5175642A

公开(公告)日：1992-12-29

申请号：US632154

申请日：1990-12-21

Applicant: Hiroyoshi Funato

Inventor： Hiroyoshi Funato

IPC: G02B6/12 ,  G02F1/335 ,  G11B7/085 ,  G11B7/12 ,  G11B7/135

CPC classification number: G11B7/139 ,  G02B6/12004 ,  G02F1/335 ,  G11B7/08552 ,  G11B7/08558 ,  G11B7/124 ,  G11B7/1381 ,  G11B2007/13727

Abstract: A light source unit comprises a laser unit for emitting a laser beam; a deflection element for deflecting the laser beam emitted from the laser unit and for outputting a deflected laser beam, a deflection angle of the deflected laser beam being controlled by a control signal supplied from an external controller to the deflection element; and a shading member for partly or entirely shading the deflected laser beam output from the deflection element, a spot size of a laser beam passing through the shading member being changed in accordance with the deflection angle of the deflected laser beam. The light source unit outputs the laser beam passing through the shading element. An optical scanning image recording apparatus using the above light source unit comprises the light source unit described above, a recording medium on which an image is formed by an optical scanning, and an optical system which moves the light beam output from the light source unit so that the light beam moved by the optical system scans a surface of the recording medium.

Abstract translation: 光源单元包括用于发射激光束的激光单元; 用于偏转从激光单元发射的激光束并用于输出偏转的激光束的偏转元件，偏转的激光束的偏转角由由外部控制器提供给偏转元件的控制信号控制; 以及用于部分地或完全地遮蔽从偏转元件输出的偏转的激光束的遮光构件，通过遮光构件的激光束的光点尺寸根据偏转的激光束的偏转角度而改变。 光源单元输出通过遮光元件的激光束。 使用上述光源单元的光学扫描图像记录装置包括上述光源单元，通过光学扫描形成图像的记录介质和使从光源单元输出的光束移动的光学系统 由光学系统移动的光束扫描记录介质的表面。

公开(公告)号：US5079415A

公开(公告)日：1992-01-07

申请号：US503046

申请日：1990-04-02

Applicant: Yutaka Hayashi ,  Hiroyoshi Funato ,  Iwao Hamaguchi ,  Shunsuke Fujita

Inventor： Yutaka Hayashi ,  Hiroyoshi Funato ,  Iwao Hamaguchi ,  Shunsuke Fujita

IPC: H01L27/146

CPC classification number: H01L27/14643

Abstract: An apparatus for converting optical information into an electrical information signal includes a plurality of one-dimensional conversion arrays arranged in parallel form. Each one-dimensional conversion array has first and second photoelectric conversion structures integrally formed. The first photoelectric conversion structure has photoelectric conversion elements each having a light receiving surface onto which an information light is projected. The second photoelectric conversion structure has photoelectric conversion elements each having a sweep light receiving surface onto which a sweep light is projected. The sweep light has a cross section which simultaneously scans the sweep light receiving surface of one of the photoelectric conversion elements included in each of the one-dimensional conversion arrays. The electrical information signal is read out from the photoelectric conversion elements provided in the first photoelectric conversion structure when the sweep light is projected onto the photoelectric conversion elements provided in the second photoelectric conversion structure.

Abstract translation: 用于将光学信息转换为电信息信号的装置包括以并行形式布置的多个一维转换阵列。 每一维转换阵列具有一体形成的第一和第二光电转换结构。 第一光电转换结构具有各自具有投影信息光的受光面的光电转换元件。 第二光电转换结构具有光电转换元件，每个光电转换元件具有投射有扫描光的扫掠光接收表面。 扫描光具有同时扫描包括在每个一维转换阵列中的一个光电转换元件的扫描光接收表面的横截面。 当扫描光投射到设置在第二光电转换结构中的光电转换元件上时，从设置在第一光电转换结构中的光电转换元件读出电信息信号。

公开(公告)号：US4971414A

公开(公告)日：1990-11-20

申请号：US367265

申请日：1989-06-16

Applicant: Hiroyoshi Funato ,  Shigeyoshi Misawa

Inventor： Hiroyoshi Funato ,  Shigeyoshi Misawa

IPC: G02B6/122 ,  G02B6/124 ,  G02B6/34 ,  G02B6/42 ,  G11B7/12 ,  G11B7/135

CPC classification number: G02B6/124 ,  G02B6/34 ,  G02B6/42 ,  G11B7/124

Abstract: An optical information record/read apparatus comprises a light source for emitting light, a converging optical system for converging the emitted light from the light source on the optical record medium so that the converged light is reflected by the optical record medium, and an optical waveguide element having a waveguide layer. A light coupling system is provided for coupling the reflected light from the optical record medium with the waveguide layer so that the light coupled with the waveguide layer is then propagated, as a guided light, within the waveguide layer. At least a part of the light coupling system is integrally formed with the optical waveguide element. A light detecting system for detecting the guided light propagated within the waveguide layer is integrally formed with the optical waveguide element. A waveguide reflection optical system for reflecting the guided light within the waveguide layer toward the light detecting system while converging the same is formed as a part of an end face of the waveguide layer.

Abstract translation: 光信息记录/读取装置包括用于发光的光源，会聚光学系统，用于将来自光源的发射光聚焦在光学记录介质上，使得会聚的光被光学记录介质反射，并且光波导 元件具有波导层。 提供了一种光耦合系统，用于将来自光学记录介质的反射光与波导层耦合，使得与波导层耦合的光随后作为引导光传播在波导层内。 光耦合系统的至少一部分与光波导元件整体形成。 用于检测在波导层内传播的引导光的光检测系统与光波导元件整体形成。 作为波导层的端面的一部分，形成有用于将波导层内的导光反射向光检测系统同时会聚的波导反射光学系统。

公开(公告)号：US4470659A

公开(公告)日：1984-09-11

申请号：US318340

申请日：1981-11-05

Applicant: Hiroyoshi Funato

Inventor： Hiroyoshi Funato

IPC: G02B26/10 ,  G02B27/17

CPC classification number: G02B26/106

Abstract: A light beam scanning apparatus in which a plurality of mutually equivalent diffraction gratings, or a plurality of mutually equivalent converging holographic lenses, is arranged on a disc in a circle equidistantly and equidirectionally. The disc is revolved at a constant speed around an axis vertical thereto that passes through the center of the circularlly arranged diffraction gratings, or the like. A laser beam is projected incident upon one of the diffraction gratings or holographic lenses on the disc at a predetermined location from a predetermined direction. The laser beam is diffracted by the diffraction grating or the holographic lens, and after converging once, becomes a diverging beam incident upon a concave mirror with a spherical or spheroidal reflecting surface which re-converges the diverging beam on a scan plane. The light re-converged on the scan plane scans the scan plane in accordance with displacement relative to the incident laser beam of the diffraction gratings or the like that are caused by the disc revolution. Due to switching by the disc revolution of the diffraction gratings or the like from one to the next that the laser beam is incident upon, scanning of the scan plane is periodically repeated.

Abstract translation: 一种光束扫描装置，其中多个相互等效的衍射光栅或多个相互等效的聚光全息透镜以等距和等距的方式布置在圆盘上。 围绕垂直于其的轴以恒定速度旋转，该圆周方向排列的衍射光栅等的中心。 激光束从预定方向在预定位置处入射到盘上的衍射光栅或全息透镜之一上。 激光束被衍射光栅或全息透镜衍射，并且在会聚一次之后，成为入射到具有球形或球形反射表面的凹面镜上的发散光束，其将发散光束重新收敛在扫描平面上。 根据相对于由盘旋转引起的衍射光栅等的入射激光束的位移，扫描平面上的光会聚在扫描平面上扫描扫描平面。 由于通过衍射光栅等的盘旋转从激光束入射到一个到另一个的盘旋转，周期性地重复扫描平面的扫描。

公开(公告)号：US4355858A

公开(公告)日：1982-10-26

申请号：US77943

申请日：1979-09-24

Applicant: Hiroyoshi Funato ,  Yoshio Fukushima

Inventor： Hiroyoshi Funato ,  Yoshio Fukushima

IPC: G02B5/32 ,  G03H1/04

CPC classification number: G02B5/32 ,  Y10S359/90

Abstract: A hologram lens capable of converting an output beam of light emitted from a semiconductor to a reconstruction light suitable for reconstructing holograms is prepared by use of the object light, which resembles a beam of light emitted divergently from a semiconductor laser for reconstructing holograms and which travels, in the opposite direction to the travelling direction of the beam of light from the semiconductor laser, in such a manner as to converge on a light emitting portion of the semiconductor laser, and the reference light which is an isotropic beam with a circular cross section. The object light is obtained by use of an optical system capable of converting an output beam emitted from semiconductor lasers to an isotropic beam of light with a circular cross section when the output beam of light is caused to pass through the optical system from its input side Lin to its output side Lout, and by causing an isotropic beam of light with a circular cross section to pass through the optical system from the output side Lout to the input side Lin.

Abstract translation: 能够将从半导体发射的输出光束转换为适于重建全息图的重建光的全息透镜通过使用类似于从半导体激光器发散的光束重新构造全息图并且行进 在与半导体激光器的光束的行进方向相反的方向上，以会聚在半导体激光器的发光部分上的方式和作为具有圆形截面的各向同性的光的参考光 。 通过使用能够将从半导体激光器发射的输出光束转换成具有圆形横截面的各向同性光束的光学系统获得目标光，当输出光束从其输入侧通过光学系统时 Lin到其输出侧Lout，并且通过使具有圆形横截面的各向同性光束从输出侧Lout穿过光学系统到输入侧Lin。

公开(公告)号：US09983531B2

公开(公告)日：2018-05-29

申请号：US13957926

申请日：2013-08-02

Applicant: Koichi Kudo ,  Koji Masuda ,  Hiroyoshi Funato ,  Takeshi Ueda ,  Yasuhiro Nihei ,  Atsushi Takaura

Inventor： Koichi Kudo ,  Koji Masuda ,  Hiroyoshi Funato ,  Takeshi Ueda ,  Yasuhiro Nihei ,  Atsushi Takaura

IPC: G01P3/36 ,  G03G15/00

CPC classification number: G03G15/5054 ,  G03G2215/0129 ,  G03G2215/0141

Abstract: A moving-member detecting device includes an image acquiring unit and a speed calculating unit. The image acquiring unit includes a light source configured to emit a light beam to a detecting position of a moving member; an area sensor configured to acquire image data of a one- or two-dimensional image; and an area-sensor control unit configured to acquire the image data. The image acquiring unit is configured to acquire pieces of image data of the moving member at first and second positions, respectively, in a moving direction of the moving member so as to acquire the piece of position image data for the second position when the moving member is at the second position after acquiring the piece of image data for the first position. The speed calculating unit is configured to calculate a moving speed of the moving member from the pieces of image data.