公开(公告)号：JP2007041212A

公开(公告)日：2007-02-15

申请号：JP2005224228

申请日：2005-08-02

Applicant: Sony Corp ,  ソニー株式会社

Inventor： FUKAZAWA YOSHIO ,  TOYODA KIYOSHI ,  YAMADA TAKATOSHI ,  WAJIKI ATSUHIKO

IPC: G03B21/00 ,  G02F1/13 ,  G03B21/14

Abstract: PROBLEM TO BE SOLVED: To provide an illuminating device capable of forming a color image by a single optical spacial modulation element without using a mechanically driven motor, and to provide an image projection apparatus using the illuminating device.
SOLUTION: The illuminating device includes: a plurality of light sources; a condensing optical system by which light emitted from the plurality of light sources is condensed into the same optical path; and the single optical spacial modulation element. The illuminating device synchronizes the plurality of light sources and the single optical spacial modulation element.
COPYRIGHT: (C)2007,JPO&INPIT

Abstract translation: 解决的问题：提供一种能够通过单个光学空间调制元件形成彩色图像的照明装置，而不使用机械驱动的电动机，并提供使用该照明装置的图像投影装置。 解决方案：照明装置包括：多个光源; 聚光光学系统，通过该聚光光学系统将从多个光源发射的光聚光成相同的光路; 和单个光学空间调制元件。 照明装置使多个光源和单个光学空间调制元件同步。 版权所有（C）2007，JPO＆INPIT

公开(公告)号：JP2005018961A

公开(公告)日：2005-01-20

申请号：JP2004120747

申请日：2004-04-15

Applicant: Sony Corp ,  ソニー株式会社

Inventor： SAITO MASAHIRO ,  FUKAZAWA YOSHIO ,  TOYODA KIYOSHI ,  SUZUKI JUNICHI ,  KUBO MINORU ,  MURAKAMI SOICHI

IPC: G11B7/09 ,  G11B7/125 ,  G11B7/13 ,  G11B7/135 ,  G11B7/22

CPC classification number: G11B7/1275 ,  G11B7/131 ,  G11B7/1353 ,  G11B7/1359 ,  G11B7/1395 ,  G11B7/22

Abstract: PROBLEM TO BE SOLVED: To simplify the positioning of a photodetector light-receiving surface or component, to reduce a manufacturing cost, and to enhance reliability. SOLUTION: This device comprises a light source 22 which emits a light of predetermined wavelength, an objective lens 27 which focuses an outgoing light emitted from the light source 22 on an optical disk 2, and which focuses a return light from the optical disk 2, and a beam splitter 25 which splits an optical-path of the return light reflected from the optical disk 2, and which makes the return light of which the optical-path has been split parallel to the outgoing light from the light source 22. Further, the device comprises a composite optical element having a dividing prism 30 which is located at the position where the return light of which the optical-path has been split enters and which spatially divides the return light, and light-receiving sections which obtains a focusing error signal by receiving a plurality of return lights spatially divided by the dividing prism 30, respectively. COPYRIGHT: (C)2005,JPO&NCIPI

Abstract translation: 要解决的问题：为了简化光电检测器光接收表面或部件的定位，以降低制造成本，并提高可靠性。 解决方案：该装置包括发射预定波长的光的光源22，将从光源22发射的出射光聚焦在光盘2上并将来自光学器件的返回光聚焦的物镜27 光盘2和分束器25，其分离从光盘2反射的返回光的光路，并且使得光路已被分离的返回光平行于来自光源22的出射光 此外，该装置包括复合光学元件，该复合光学元件具有分隔棱镜30，该分割棱镜30位于其中已经分离光路的返回光进入并且空间上分开返回光的位置，以及获得的光接收部 通过分别通过分割棱镜30空间分割的多个返回光来接收聚焦误差信号。 版权所有（C）2005，JPO＆NCIPI

公开(公告)号：JP2003059087A

公开(公告)日：2003-02-28

申请号：JP2001246608

申请日：2001-08-15

Applicant: Sony Corp ,  ソニー株式会社

Inventor： TOYODA KIYOSHI

IPC: G02B1/10 ,  G02B1/11 ,  G02B1/115 ,  G02B1/18 ,  G11B7/125 ,  G11B7/13 ,  G11B7/135 ,  H01L31/02 ,  H01S5/022

CPC classification number: H01L2224/48091 ,  H01L2924/00014

Abstract: PROBLEM TO BE SOLVED: To decompose and remove dust and mold adhering to an optical element, a semiconductor laser, or an optical detector provided in an optical head and to prevent the interruption of emitted or incident laser beams by the dust and the mold.
SOLUTION: In a semiconductor laser 20, a photocatalyst layer 29 is formed on the outer surface of a window substrate 27 attached to a can package 26 so as to cover an aperture part of the can package 26. The photocatalyst layer 29 is formed by using a rutile-type titanium oxide and the semiconductor laser 20 is specified to be a bluish purple laser. The photocatalyst layer 29 is irradiated with laser beams 2 emitted from a laser chip 21 to be activated and the dust and the mold adhering to the photocatalyst layer 29 are decomposed and removed. In the optical detector, a photocatalyst layer is formed on the outer surface of a window substrate attached to a package so as to cover an aperture part of the package.
COPYRIGHT: (C)2003,JPO

Abstract translation: 要解决的问题：分解和除去附着在光学头中的光学元件，半导体激光器或光学检测器上的灰尘和模具，并防止灰尘和模具发射或入射的激光束的中断。 解决方案：在半导体激光器20中，光催化剂层29形成在安装在罐包装26上的窗口基板27的外表面上，以覆盖罐包装26的孔部。光催化剂层29通过使用 金红石型氧化钛和半导体激光器20被指定为蓝紫色激光。 用从激光芯片21发射的激光束2照射光催化剂层29，并且附着在光催化剂层29上的灰尘和模具被分解除去。 在光学检测器中，在安装在封装上的窗口基板的外表面上形成光催化剂层，以覆盖封装的开口部分。

公开(公告)号：JP2000339745A

公开(公告)日：2000-12-08

申请号：JP15292699

申请日：1999-05-31

Applicant: SONY CORP

Inventor： TOYODA KIYOSHI

IPC: G11B7/09 ,  G11B7/135

Abstract: PROBLEM TO BE SOLVED: To make the whole device small in size and thin in thickness. SOLUTION: This optical pickup device is provided with a first and second light sources 6, 15 emitting laser beams having mutually different wavelengths and the objective lens 10 focusing the laser beams on a CD (compact disk), DC-R and DVD(digital versatile disk) respectively. Also the device is also provided with the laser coupler 11 having the circuit board 19 on the main surface of which a first to eighth light receiving parts A1-A8 respectively receiving returning light from an optical disk by the laser beams emitted from the first and second light sources 6, 15 and the second light source 15 are respectively provided.

公开(公告)号：JP2000030282A

公开(公告)日：2000-01-28

申请号：JP19220298

申请日：1998-07-08

Applicant: SONY CORP

Inventor： TOYODA KIYOSHI

IPC: G11B7/135

Abstract: PROBLEM TO BE SOLVED: To miniaturize a shape with simple constitution by adapting an optical pickup and optical disk device, particularly the optical disk device for accessing a magneto-optical disk. SOLUTION: A member 47D having double refractiveness and a member 47B consisting of a glass material are combined and are arranged on a semiconductor substrate 45. A laser beam L1 is emitted via these members 47D, 47B, and the return light L2 from the magneto-optical disk is received. The optical pickup, which may be miniaturized in the shape and the optical disk device using this optical pickup, may be obtd. with the simple constitution by combining the member having the double refraction property and the member consisting of the glass material, arranging the members on the semiconductor substrate, emitting the laser beam via these members and receiving the return light from the magneto-optical disk in the manner described.

公开(公告)号：JPH1139681A

公开(公告)日：1999-02-12

申请号：JP19101697

申请日：1997-07-16

Applicant: SONY CORP

Inventor： TOYODA KIYOSHI ,  NISHI NORIAKI

IPC: G11B7/09 ,  G11B7/135

Abstract: PROBLEM TO BE SOLVED: To permit the generation of an excellently accurate tracking error signal without hindering the miniaturization of an optical signal read-out device by the simple constitution. SOLUTION: This optical signal read-out device 1 irradiates the signal recording surface 6a of an optical recording medium 6 with a light beam transmitted from a light emitting element and reads out a signal by detecting the reflected light beam from the signal recording surface by means of a light receiving element. In this case, the device is provided with main light receiving elements 13a, 13b for receiving a light beam from a main light emitting element 15 and a light beam transmitted from the main light emitting element, converged on the signal recording surface in the focused state and reflected thereupon; secondary light receiving elements 14a, 14b for receiving a light beam from a secondary light emitting element 16 and a light beam transmitted from the secondary light emitting element, converged on the signal recording surface in the focused state and reflected thereupon; and an objective lens 3 freely movable in the focusing and tracking directions and converging light beams from the respective light emitting elements on the signal recording surface; and the tracking error signal is generated from the arithmetic outputs between the output signals of respective light receiving elements.

公开(公告)号：JPH08241530A

公开(公告)日：1996-09-17

申请号：JP7063195

申请日：1995-03-04

Applicant: SONY CORP

Inventor： TOYODA KIYOSHI ,  SAITO KIMIHIRO ,  NISHI NORIAKI ,  TAMADA HITOSHI ,  MATSUMOTO SHUICHI

IPC: G11B11/10 ,  G02B5/30 ,  G11B7/12 ,  G11B7/123 ,  G11B7/135 ,  G11B7/1353 ,  G11B7/1356 ,  G11B11/105

Abstract: PURPOSE: To provide an optical pickup with high reliability by providing a photodetectors group respectively light receiving luminous fluxes branched by a metallic one-dimensional lattice formed so that a ratio between a lattice cycle and the thickness of a metallic conductor constituting a lattice becomes a prescribed value. CONSTITUTION: The optical pickup 11 consists of a waveguide body 13 emitting incident light from a laser light source by diffraction, photodetectors 14a, 14b arranged on a prescribed position downward the body 13 and a supporting part 15 supporting them. The incident light irradiation surface of the waveguide body 13 is sloped for the light source, and a beam splitter film 16 is arranged on the incident light irradiation surface, and the metallic one-dimensional lattice 17 formed so that the ratio h/d between the lattice period d and the thickness h of the metallic conductor constituting the lattice becomes about 0.1 or above is arranged on the irradiation area of the waveguide body 13 inside of the luminous fluxes through the film 16. A total reflection film 18 is arranged on the irradiation area of the luminous fluxes reflected by the lattice 17, and one side photodetector 14b is arranged on the corresponding part of the irradiation area of the luminous fluxes totally reflected by the total reflection film 18.

公开(公告)号：JPH0485739A

公开(公告)日：1992-03-18

申请号：JP19924690

申请日：1990-07-30

Applicant: SONY CORP

Inventor： TOYODA KIYOSHI ,  SHINO KUNINORI ,  TSUKAMURA YOSHIHIRO

IPC: G11B11/10 ,  G11B11/105

Abstract: PURPOSE:To evade an adverse effect due to unerased information remained by making a size of a data recording unit to be magnetized in the same direction as the initialization direction larger than a size of a data recording unit to be magnetized in the reverse direction to the initialization direction of magnetization of a recording medium layer. CONSTITUTION:The magnetization direction of the recording medium layer of the magneto-optical disk at the time of initializing the disk is shown as '0' and directed downward, and the direction of magnetization around a recording area after forming a magnetization pattern is left as this initialization magnetizing direction. When a pit of data '0' is recorded to be formed in overlapping with a part formed previously with a pit of data '1', because of the larger size of the pit of data '0', the pit of data '1' should never remain unerased. On the contrary, when the pit of data '1' is recorded to be formed in overlapping with a part formed previously with the pit of data '0', even when unerased parts remain, because of the same magnetization direction as the surroundings, no adverse effect due to unerased remaining parts at the time of reproducing take place at all.

公开(公告)号：JPH01258227A

公开(公告)日：1989-10-16

申请号：JP8677588

申请日：1988-04-08

Applicant: SONY CORP

Inventor： OKI YUTAKA ,  TOYODA KIYOSHI ,  NODA TOYOKAZU

IPC: G11B7/00 ,  G11B7/0033

Abstract: PURPOSE:To attain high speed recording and reproducing by equipping an optical system for recording and an optical system for reproducing in an optical card, for which plural recording units to be composed of linear track strings are recorded in a matrix shape. CONSTITUTION:To an optical card 1, a digital signal is recorded as the track string and the plural recording units (blocks) of the track strings in a prescribed number are recorded in the matrix shape. The optical system for recording and the optical system for reproducing are equipped and a laser beam from a light source 6 of the optical system for recording is deflected by a galvano-mirror 8 and scanned in the direction of the track string. Then, the digital signal is recorded. One block is formed with the prescribed track string. A reproducing light from a light source 14 for reproducing covers the range of one block and the light is image-formed to an area image sensor 19. A signal from the image sensor is converted to be digital and written to a memory and the reproducing data of the respective track strings are read from the memory. Then, the reproducing can be executed just after the recording and a check can be easily executed. Then, the high speed recording and high speed reproducing can be executed.

公开(公告)号：JPS61250854A

公开(公告)日：1986-11-07

申请号：JP9271685

申请日：1985-04-30

Applicant: SONY CORP

Inventor： OKI YUTAKA ,  TOYODA KIYOSHI

IPC: G06K7/10 ,  G11B7/135

Abstract: PURPOSE:To improve the output characteristic and the defocus characteristic by increasing the image forming performance of a line sensor in the arranging direction of a photodetector cell more than the image forming performance in the direction orthogonal to the arranging direction so as to decrease the incident angle of light and the reflection angle of light from an optical recording medium to the line sensor. CONSTITUTION:An optical recording medium 2 is provided to an optical card 1, and in order to reproduce the information recorded on the optical recording medium 2, a light source 3 such as a light emitting diode irradiating a lighting light and the line sensor 4 receiving a reflected light from the recording medium face, so-called read light, are provided. In order to form the image of the read light on a photodetection part 5 of the line sensor 4, an image forming lens 6 is arranged between the optical card 1 and the line sensor 4. In the image forming lens 6, the image forming performance in the arranging direction Z of a photodetector cell S of the line sensor 4 is increased more than that in the direction X orthogonal to the direction Z.