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公开(公告)号：JP2003077161A
公开(公告)日：2003-03-14
申请号：JP2001265473
申请日：2001-09-03
Inventor： TOYODA KIYOSHI , NAGARA TORU
Abstract: PROBLEM TO BE SOLVED: To attain the reduction of load on a semiconductor laser as to an optical disk device in the case when the optical disk is accessed by multi-beams, especially applying to the access of the optical disk by the multi-beams. SOLUTION: This device is constituting so that the frequency bands of feedback loops 2, 24, 26, 27 of the automatic light quantity adjustment are expanded to at least the frequency band of a servo mechanism such as the tracking control, or more.
Abstract translation: 要解决的问题：在通过多光束访问光盘的情况下，特别是应用于通过多光束访问光盘的情况下，能够实现半导体激光器对于光盘装置的负载的减小。 解决方案：该装置构成使得自动光量调节的反馈回路2,24,26,27的频带扩展至至少伺服机构的频带，如跟踪控制等。
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公开(公告)号：JPH1125488A
公开(公告)日：1999-01-29
申请号：JP17460897
申请日：1997-06-30
Applicant: SONY CORP
Inventor： TOYODA KIYOSHI , NISHI NORIAKI
Abstract: PROBLEM TO BE SOLVED: To miniaturize the element and to facilitate adjustment of a direction of an optical axis of laser light from a semiconductor laser by providing a correction mirror for adjusting the direction of the optical axis of the laser light and fixing the mirror adjusted in rotation around the optical axis of the incident laser light as the center. SOLUTION: The rotary adjustment correction mirror 14 has an inclined surface 14a as a mirror surface at an inclined angle 45 degrees on one side surface in the thicknesswise direction of a flat plate glass. Then, this mirror surface 14a is disposed opposite to a laser light emitting hole of a cover glass 13, and is rotated around the optical axis X-X of the incident light upon the mirror surface 14a as the rotary axis, so that the direction of an optical axis Y-Y of the laser light emitted by the laser light emitting and receiving element (a laser coupler) 3 is adjusted, and then the correction mirror 14 is bonded to the cover glass 13. Thus, time emitting direction of the laser light of the laser coupler 3 becomes a prescribed direction as against a case body 9, and the accuracy of the laser coupler 3 as the parts can be enhanced, and hence the adjustment of the optical axis of the laser coupler 3 is not required anymore after positioning and mounting this laser coupler 3 on a printed circuit board of an optical pickup device.
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公开(公告)号：JPH08297875A
公开(公告)日：1996-11-12
申请号：JP12446395
申请日：1995-04-25
Applicant: SONY CORP
Inventor： TOYODA KIYOSHI
IPC: G11B11/10 , G11B11/105
Abstract: PURPOSE: To miniaturize a device and to reduce a cost by providing first, second polarization separating means instead of a conventional beam splitter, and a Wollaston prism. CONSTITUTION: The first polarization separating means 12 is provided on one surface of a base material 41 arranged between a light source 11 and an objective lens 13, and separates a light beam from the light source 11 and a return light beam from a recording surface of a magneto-optical recording medium MO through the objective lens 13 in the radial direction of the magneto-optical recording medium MO. The second polarization separating means 14 is provided on the other surface of the base material 41, and separates the return light beam separated by the first polarization separating means 12 to three light beams of zero-order diffracted light and ±1st-order diffracted light to send them to respective parts 15a, 15b of a photodetector 15. The photodetector 15 detects a focusing error signal based on respective output signals of the separated light receiving surfaces 15a, 15b on which the zero-order light is made incident, and further, detects a tracking error signal by a difference of the signals based on two pieces of light beams by the ±1st-order light. Thus, the first, second polarization separating means are constituted integrally.
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公开(公告)号：JPH0676325A
公开(公告)日：1994-03-18
申请号：JP22801992
申请日：1992-08-04
Applicant: SONY CORP
Inventor： KATO HIDEO , TOYODA KIYOSHI , SHINO KUNINORI
IPC: G11B7/09
Abstract: PURPOSE:To make an optical head small in size and light in weight. CONSTITUTION:A mirror 44 is mounted on the side surface of an optical head and light emitted from a light emitting part 41 is made incident on the mirror. The reflected light is detected by means of a position detector (PSD) 42 and a signal corresponding to the position of the optical head 2 in the radial direction of an optical disk is generated by means of a differential amplifier 43.
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公开(公告)号：JPH02194485A
公开(公告)日：1990-08-01
申请号：JP1328289
申请日：1989-01-24
Applicant: SONY CORP
Inventor： OKI YUTAKA , TSUKAMURA YOSHIHIRO , TOYODA KIYOSHI
Abstract: PURPOSE:To input a data of fingerprint pattern from which individual identification is attained with high accuracy through simple operation by detecting it that a fingerprint pattern taking face is depressed at a prescribed force and inputting the data of the fingerprint pattern. CONSTITUTION:Since a support member 3 has an elasticity, when a finger is pressed onto a fingerprint pattern taking face 7 provided to a transparent optical member 2, the transparent optical member 2 is displaced in a direction perpendicular to the face 7 with its pressing force, and when the pressing of the face 7 by a prescribed force is detected by a detection means 4, a control means 20 inputs an output of a photoelectric conversion means 6 as a fingerprint pattern data. The data of the fingerprint pattern depressed at a prescribed force is inputted by pressing a finger onto the fingerprint take face 7 in this way, and the data of the fingerprint pattern able to identify person is inputted with high accuracy and less mis-recognition.
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Patent Agency Ranking
公开(公告)号：JPH02105337A
公开(公告)日：1990-04-17
申请号：JP25906588
申请日：1988-10-14
Applicant: SONY CORP
Inventor： TOYODA KIYOSHI
Abstract: PURPOSE:To easily and quickly control the focus positions of an objective lens with high accuracy by controlling the position of the objective lens so as to secure the maximum modulation rate for the beam reflected from an optical card. CONSTITUTION:The beams of a laser light source 20 reach an information recording surface 10a of an optical card 10 via a beam splitter 24, a double- faced reflecting galvanomirror 26, and an objective lens 28. While the beams sent from the splitter 24 are supplied to a signal processing part 68 via a photodetecting part 36 of an output control optical system and control the output of the light source 20 as the control signal Sp. The beams reflected from the surface 10a are supplied to a signal processing part 70 via a photodetecting part 66, and a signal Sf showing the modulation rate of the reflected beam is produced and displayed on a monitor 72. Then the position of the lens 28 is controlled via a lens driving part 80 so that the displayed modulation rate is maximized. Thus the focus position of the lens 28 is set on the surface 10a.
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公开(公告)号：JPH01214487A
公开(公告)日：1989-08-28
申请号：JP3926288
申请日：1988-02-22
Applicant: SONY CORP
Inventor： TOYODA KIYOSHI , AKAMATSU JUNICHI , YAMAMURA MASATO , OKI YUTAKA
Abstract: PURPOSE:To enable a desired image to be displayed as a positive image with a metallic luster on the back side of a recording layer and with a high quality feeling, by protecting the recording layer on a transparent base with a transparent film, and printing a negative image of a predetermined pattern on the surface of the transparent film. CONSTITUTION:A negative image N of a predetermined pattern is printed on the surface of a protective film 23, consisting of a transparent synthetic resin film, of an optical card 20. Namely, an ink 24 forms, for example, a gray ground (opaque layer) over substantially the entire surface of the protective film 23, leaving uninked parts 24c, 24f in the area of the pattern so that the protective film 23 is exposed in the pattern area surrounded by the gray ground. The negative image pattern N is protected by a hard coat 25 of, for example, a UV-curable resin. The protective film 23 is adhered to a recording layer 12 on a base 11 by a transparent adhesive layer 16. As a result, the surface of the recording layer 12b is partly seen through the transparent adhesive layer 16, protective layer 23 and hard coat 25, in the pattern surrounded by the gray ground of the printing ink 24, and shows a high reflectance. Therefore, the pattern is displayed as a positive image with a metallic luster.
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公开(公告)号：JPH01201827A
公开(公告)日：1989-08-14
申请号：JP2511188
申请日：1988-02-05
Applicant: SONY CORP
Inventor： OKI YUTAKA , WADA TAKUYA , TOYODA KIYOSHI
IPC: G06K7/01 , B42D15/02 , B42D15/10 , G11B7/00 , G11B7/0033
Abstract: PURPOSE:To suppress the making of an optical system into a large scale by making a long line sensor and an objective lens with a wide visual field needless by reproducing an information signal by scanning an optical beam in a direction intersecting orthogonally to the arranging direction of a track string. CONSTITUTION:The information signal is recorded on an optical card 1 optically as plural discrete blocks consisting of the string of plural tracks 3, that is, segments 2. And the recording of the signal is performed in such a way that a lower beam is reflected by a galvanomirror 15 and it is projected on the card 1 via the objective lens 16 and the beam is scanned in a direction of Y by rotating the mirror 15. The reproduction of the signal is performed in such a way that the optical beam from a LED 21 is projected on the card 1 via a condenser lens 22 and reflected light is received at the line sensor 25 via the objective lens 23 and a mirror 24, and the optical beam is scanned in the direction of Y intersecting orthogonally to the arranging direction of the track string.
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公开(公告)号：JPS6417228A
公开(公告)日：1989-01-20
申请号：JP17258087
申请日：1987-07-10
Applicant: SONY CORP
Inventor： TOYODA KIYOSHI , YAMAMURA MASATO
Abstract: PURPOSE:To execute a stabilized servo without differing largely a servo gain at a recording and reproducing times by making one part of a light source of two light sources of different wavelengths each other as that for obtaining a servo signal. CONSTITUTION:The laser beam of a wavelength lambda1 emitted from a recording/ reproducing light source 11 is reflected by a dichroic mirror 14 and projected on the part where the recording/reproducing of an optical card 1 are performed. This reflection light is reflected by the dichroic mirror 14 and fed to an optical detector 17. The laser beam in a wavelength lambda3 emitted from the light source 21 for servo is passed through the dichroic mirror 14 and projected on the part where the recording/reproducing of the optical card 1 are executed. This reflection light is passed through the dichroic mirror 14 and fed to the optical detector 25 for servo. The amplitude of the modulation signal to be reproduced can be thus made larger, the difference in the servo gain prior to recording the data and that after recording the data is reduced as well and a stabilized servo can be exerted at both recording and reproducing times.
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公开(公告)号：JP2010123214A
公开(公告)日：2010-06-03
申请号：JP2008297233
申请日：2008-11-20
Inventor： AIBA MOTOO , TAKAHASHI TOYOKAZU , SAKAKIBARA HIROYUKI , TOYODA KIYOSHI
Abstract: PROBLEM TO BE SOLVED: To provide an objective lens made of plastics that compensates for the third-order coma aberration when environmental temperature and the thickness of a cover layer are changed, and an optical pickup and an optical disc device using the same. SOLUTION: The objective lens 4 made of plastics and used for the optical pickup 1. The lens condenses light beams emitted from a light source 3 into one or more layers of the optical disc. The numerical aperture is 0.8 or more. The sign of the third-order coma aberration generated by a lens tilt of the objective lens is the same with respect to a tilt angle direction in a range of an incident magnification for correcting the third-order spherical aberration caused by change in temperature and the thickness of the cover layer of the optical disc. COPYRIGHT: (C)2010,JPO&INPIT
Abstract translation: 要解决的问题：提供一种塑料制的物镜，其在环境温度和覆盖层的厚度改变时补偿三次彗形像差，以及光拾取器和使用其的光盘装置 。 解决方案：由塑料制成并用于光学拾取器1的物镜4.透镜将从光源3发射的光束会聚到一个或多个光盘中。 数值孔径为0.8以上。 由物镜的透镜倾斜产生的三阶彗差的符号相对于用于校正由温度变化引起的三阶球面像差的入射倍率范围内的倾斜角方向， 光盘盖层的厚度。 版权所有（C）2010，JPO＆INPIT
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