公开(公告)号：JPS5958637A

公开(公告)日：1984-04-04

申请号：JP16936782

申请日：1982-09-28

Applicant: Sony Corp

Inventor： KUBOTA SHIGEO ,  SHINTANI KENJI

IPC: G11B7/08 ,  G11B7/09 ,  G11B7/12

CPC classification number: G11B7/0903 ,  G11B7/1353 ,  G11B7/1381

Abstract: PURPOSE: To extend the distance among three detectors to form them on the same semiconductor substrate, by providing a phase type diffraction grating in the optical path and irradiating photodetectors through a concave lens with reflected beams of 0-order and ±1-order diffracted lights.
CONSTITUTION: A phase type diffraction grating 3 is arranged in the optical path between a semiconductor laser light source 1 and a beam splitter 4. A beam 2 from the light source 1 is separated to a 0-order diffracted beam 2a and ±1- order diffracted beams 2b and 2c by the diffraction grating 3, and reflected beams are made incident to photodetectors 10, 11, and 12 through a concave lens 9. A tracking error signal is obtained on a basis of the difference between outputs of photodetectors 11 and 12. By arranging this concave lens 9, lengths among three photodetectors 10W12 are extended and adjusted easily, and three photodetectors are formed easily on the single semiconductor substrate.
COPYRIGHT: (C)1984,JPO&Japio

Abstract translation: 目的：为了延长三个检测器之间的距离，以便在同一半导体基板上形成它们，通过在光路中提供相位衍射光栅，并通过具有0级和+或-1级反射光束的凹透镜照射光电检测器 衍射灯。 构成：在半导体激光光源1和光束分离器4之间的光路中布置有相位衍射光栅3.来自光源1的光束2被分离成0级衍射光束2a和+或-1 - 衍射光栅3的衍射光束2b和2c，并且反射光束通过凹透镜9入射到光电检测器10,11和12。基于光电检测器11的输出之间的差异获得跟踪误差信号 通过布置该凹透镜9，三个光电检测器10-12之间的长度被容易地延伸和调整，并且在单个半导体衬底上容易地形成三个光电检测器。

公开(公告)号：JP2002232765A

公开(公告)日：2002-08-16

申请号：JP2001029208

申请日：2001-02-06

Applicant: SONY CORP

Inventor： MATSUO HIDEKI ,  OHASHI ISAO ,  SHINTANI KENJI ,  MORIMIYA YUJI ,  NIKAMI TSUTOMU

IPC: G03B17/02 ,  H04N5/225

Abstract: PROBLEM TO BE SOLVED: To avoid stick-out of a card from a card slot in an information transmission apparatus inserted into the card slot mounted on information processing equipment when transmitting information between the equipment. SOLUTION: An information transmission apparatus 1 is composed of an apparatus body part 2 allowed to be inserted into the card slot of the information processing equipment and a function expanding pat 3 to be attached detachably to the body part 2 and to add a predetermined function, and the body part 2 has an outside shape of a thin card to be perfectly accommodated into the card slot of the equipment, and comprises a storage part 9 to transfer signals between the equipment and the expanding part 3, a signal processing part 10 to process signals to be transferred to the equipment and a connector 8 to be connected to a connector provided on the card slot of the equipment, where the expanding part 3 is configured to have a predetermined function by being connected to the body part 2.

公开(公告)号：JP2536830B2

公开(公告)日：1996-09-25

申请号：JP23742583

申请日：1983-12-16

Applicant: SONY CORP

Inventor： NAKAMURA AKIRA ,  SHINTANI KENJI

IPC: G02B7/00 ,  G11B7/12 ,  G11B7/135

公开(公告)号：JPH08138263A

公开(公告)日：1996-05-31

申请号：JP29581394

申请日：1994-11-04

Applicant: SONY CORP

Inventor： SHINTANI KENJI ,  YAMADA TAKATOSHI

IPC: G11B7/135

Abstract: PURPOSE: To make it possible to assure the prescribed amt. of the distance between an optical disk and an objective lens even with the optical disk of a relatively large size and even if this optical disk is a large size and to reduce the size over the entire part of an optical system by disposing a concave lens between a beam splitter and a reflection mirror. CONSTITUTION: The beam splitter 13 introduces the light beam emitted from a semiconductor laser element 10 toward the optical disk and separates the light beam reflected by an optical disk surface 17 from the optical path from this semiconductor laser element 10. A photodetector 21 receives the reflected beam from the optical disk separated by the beam splitter 13. A concave lens 22 is disposed between the objective lens 16 and the beam splitter 13 via a λ/4 plate 15 and a reflection mirror 14. As a result, the diameter of the incident luminous flux on the objective lens 16 is made large by the effect of this concave lens 22 and the required amt. of the distance between the optical disk and the objective lens is assured. In addition, the semiconductor element and the optical system on the photodetector side are made small with respect to the conave lens.

公开(公告)号：JPH07254159A

公开(公告)日：1995-10-03

申请号：JP4329095

申请日：1995-03-02

Applicant: SONY CORP

Inventor： MIMORI KOJI ,  AIDA YOSHIMASA ,  ISHIDA TOMOYUKI ,  SHINTANI KENJI

IPC: G11B7/09

Abstract: PURPOSE:To realize focussing control and tracking control having good responsiveness even with a servo current of a high frequency and durability against a change in temperature by preventing the generation of resonance during driving. CONSTITUTION:A bobin 36 having an objective lens 33 is supported in the optical axial direction of the objective lens 36 by first and second displacing members 41a and 41b parallely disposed in a direction orthogonal to the optical axial direction of the objective lens 36 so as to be displaced and positioned between the first and second displacing members 41a and 41b. Then, by a third elastic member 43 having a hinge part 46 integrally provided on one side surface of a supporting member 40 for supporting the first and second displacing members 41a and 41b this is turnably supported in a direction orthogonal to the optical axial direction of the objective lens 33.

公开(公告)号：JPH03141042A

公开(公告)日：1991-06-17

申请号：JP24806290

申请日：1990-09-18

Applicant: SONY CORP

Inventor： TSURUSHIMA KATSUAKI ,  SHINTANI KENJI

IPC: G11B7/09

Abstract: PURPOSE:To improve driving efficiency with simple constitution by executing focusing and tracking servo only by an objective lens device consisting of an objective lens, a holding member, a magnetic core, a bobbin, and a coil, etc. CONSTITUTION:A moving part consisting of the objective lens 4 and the bobbin 13, etc., can freely move along the optical axis of the lens 4. Then, the 1st coil 14 wound around the bobbin 13, the 2nd coil consisting of plural rectangular coils 15a and 15b which are attached to the bobbin 13, magnetic cores 16a and 16b constituting a common magnetic circuit which acts to the coils 15a and 15b, and a magnet 17 are provided. One of the winding parts R of the coils 15a and 15b orthogonally crossed with the coil 14 is disposed in a non- magnetic field part and a focusing servo signal is given to the coil 14. By moving the moving part along the optical axis of the lens 4, the focusing servo is executed. By giving a tracking servo signal to the coils 15a and 15b, the moving part is turned to execute the tracking servo.

公开(公告)号：JPS61216132A

公开(公告)日：1986-09-25

申请号：JP1633686

申请日：1986-01-28

Applicant: SONY CORP

Inventor： KUBOTA SHIGEO ,  SHINTANI KENJI

IPC: G11B7/09

Abstract: PURPOSE:To facilitate easy increase and control of distances among three photodetectors by setting a concave lens between a beam splitter and the 1st and 2nd secondary photodetectors. CONSTITUTION:A phase type diffraction grating 3 is set into an optical path between a laser light source 1 and a collimator lens 5, i.e., between the light source 1 and a beam splitter 4. The 1st and 2nd secondary photodetectors 11 and 12 detect the +1 and -1 primary diffracted beams 2b and 2c respectively. A zero degree diffracted beam 2a is made incident on a main photodetector 10 via a semicolumnar lens 13. The space among focus positions of beams 2a-2c, i.e., the spaces among detectors 10-12 can be increased with control with use of a concave lens 9. A tracking error signal is obtained from the difference between detection outputs of both detectors 11 and 12.

公开(公告)号：JPS57103131A

公开(公告)日：1982-06-26

申请号：JP17989180

申请日：1980-12-18

Applicant: SONY CORP

Inventor： TOUMOTO KAZUTAKA ,  MARUTA KEIJI ,  SUZUKI JIYUNICHI ,  SHINTANI KENJI

IPC: G02B7/04 ,  G11B7/08 ,  G11B7/09 ,  G11B21/02

Abstract: PURPOSE:To obtain a small-sized biaxial driver suitable to an optical reproducing head by driving a movable coil fitted to an optical system by another movable coil through a leaf spring. CONSTITUTION:A moving body 23 including a lens 27 has a bobbin 32 in a cylindrical cap shape wound with a coil 33 and at the outer circumference of the cylindrical part of the bobbin 32, a cylindrical yoke 25a which has cylindrical opposite magnetic poles N and S, and an annular magnet 25b provided to the outside cylindrical magnetic pole N are provided. Then, a focusing error signal is supplied to the coil 33. A rectangular plate-shaped frame 34 is equipped with a coil 35, and in a magnetic circuit composed of magnets 36A-36B, and yokes 26A-26B, it is moved by a tracking signal. Leaf springs 28 and 29 permit moving bodies 23 and 24 to move only in the thickness direction of the leaf springs.