公开(公告)号：JPH04356748A

公开(公告)日：1992-12-10

申请号：JP13125891

申请日：1991-06-03

Applicant: SONY CORP

Inventor： MAEDA FUMISADA

IPC: G11B11/10 ,  G11B11/105

Abstract: PURPOSE:To offer a magneto-optical recorder for which two kinds of magneto- optical media can be used. CONSTITUTION:A disk 1 is exposed at the opening part 3 of a cartridge 2, and a magneto-optical head 4 is installed below the disk 1 exposed at the opening part 3, and a recording magnet 5 is installed above it, and further, initializing magnets 6, 7 are installed in parallel with the recording magnet 5. Further, the recording magnet 5 is installed freely rotatably around the axis of its center A, and one side and the other side in relation to this center A are made an S pole and an N pole respectively, and a driving coil 8 is installed above this recording magnet 5, and simultaneously, a yoke 9 is installed on the driving coil 8.

公开(公告)号：JP2010107908A

公开(公告)日：2010-05-13

申请号：JP2008282450

申请日：2008-10-31

Applicant: Sony Corp ,  ソニー株式会社

Inventor： TAKEMOTO SADAHIRO ,  KATO YOSHIAKI ,  MAEDA FUMISADA

IPC: G02B26/00 ,  G03B7/097 ,  G03B11/00 ,  G03B15/02 ,  G03B15/03 ,  G03B15/05 ,  G11B7/135 ,  H04N5/225

CPC classification number: G02B26/005 ,  G02B3/14 ,  G11B7/1374 ,  G11B2007/13727 ,  H04N5/2254 ,  H04N5/2256

Abstract: PROBLEM TO BE SOLVED: To provide an electro-wetting apparatus which is operated at a low voltage in a wider variable voltage range, various apparatuses furnished with the electro-wetting apparatus and a method of driving the electro-wetting apparatus.
SOLUTION: The electro-wetting apparatus includes: a liquid having electric conductivity or polarity; first and second electrodes for applying voltage on the liquid; a dielectric material layer provided between the liquid and the first electrode; and a voltage applying part. The voltage applying part applies a cyclicly varying voltage signal between a first voltage not smaller than 0 volt and a second voltage larger than the first voltage, namely, an alternating voltage which varies in a positive voltage range, upon the first and the second electrodes.
COPYRIGHT: (C)2010,JPO&INPIT

Abstract translation: 要解决的问题：提供一种在更宽的可变电压范围内以低电压工作的电润湿装置，配备有电润湿装置的各种装置以及驱动电润湿装置的方法。 电润湿装置包括：具有导电性或极性的液体; 用于在液体上施加电压的第一和第二电极; 设置在液体和第一电极之间的电介质材料层; 和电压施加部。 电压施加部分在第一和第二电极之间在不小于0伏特的第一电压和大于第一电压的第二电压即正电压范围内变化的交流电压之间施加循环变化的电压信号。 版权所有（C）2010，JPO＆INPIT

公开(公告)号：JP2006285031A

公开(公告)日：2006-10-19

申请号：JP2005106524

申请日：2005-04-01

Applicant: Sony Corp ,  ソニー株式会社

Inventor： KATO YOSHIAKI ,  MAEDA FUMISADA

IPC: G02B3/14

CPC classification number: G02B3/14 ,  G02B26/005

Abstract: PROBLEM TO BE SOLVED: To reduce a variable focus lens driving voltage, in the variable focus lens and an optical apparatus using the variable focus lens, and also, to provide a method for comparatively easily manufacturing the variable focus lens.
SOLUTION: Regarding the variable focus lens, a conductive liquid material part 1 and an insulating liquid material part 2 are stored in a container 10, a 1st electrode 21 applying a voltage to the conductive liquid material part 1 via a dielectric layer interposed therebetween, and a 2nd electrode 24 directly comes in contact with the conductive liquid material part 1, and the dielectric layer is an anodized part 22 constituted of metal oxide formed by anodizing the 1st electrode 21.
COPYRIGHT: (C)2007,JPO&INPIT

Abstract translation: 要解决的问题：为了减少可变焦距透镜中的可变焦距透镜驱动电压，以及使用可变焦距透镜的光学装置，并且还提供了一种用于相对容易地制造可变焦距透镜的方法。 解决方案：关于可变焦距透镜，导电液体材料部分1和绝缘液体材料部分2存储在容器10中，第一电极21经由介电层插入到导电液体材料部分1上的电压 并且第二电极24直接与导电液体材料部分1接触，并且电介质层是由通过阳极氧化第一电极21形成的金属氧化物构成的阳极氧化部分22.PEGYRIGHT：（C）2007， JPO＆INPIT

公开(公告)号：JP2003066300A

公开(公告)日：2003-03-05

申请号：JP2001260394

申请日：2001-08-29

Applicant: Sony Corp ,  ソニー株式会社

Inventor： MAEDA FUMISADA ,  NAGASHIMA SHINICHI

IPC: G01B11/26 ,  G02B7/02 ,  G02B7/28 ,  G02B13/00 ,  G02B13/18 ,  G02B25/00 ,  G11B7/08 ,  G11B7/135 ,  G11B7/22

CPC classification number: G11B7/22 ,  G02B7/021 ,  G02B27/62 ,  G11B7/121 ,  G11B7/1374 ,  G11B7/13922 ,  G11B2007/13727

Abstract: PROBLEM TO BE SOLVED: To easily adjust the relative position between lenses with high accuracy and to suppress generation of spherical aberration in an objective lens composed of a plurality of lenses and having ≥0.7 numerical aperture.
SOLUTION: The manufacturing device is equipped with a positioning mechanism 31 in which one lens 1 is attached and fixed to a cylindrical lens holder 3 made of a synthetic resin material and another lens 2 is positioned with respect to the first lens 1 as the reference and is fixed to the lens holder 3 so as to relatively position the lenses 1, 2.
COPYRIGHT: (C)2003,JPO

Abstract translation: 要解决的问题：为了容易地以高精度调节透镜之间的相对位置，并且抑制由多个透镜构成的物镜中的球面像差的产生，并且具有> = 0.7数值孔径。 解决方案：制造装置配备有定位机构31，其中一个透镜1被固定到由合成树脂材料制成的柱面透镜保持件3上，另一个透镜2相对于第一透镜1定位为基准， 被固定到透镜保持器3上，以使透镜1,2相对定位。

公开(公告)号：JP2001126262A

公开(公告)日：2001-05-11

申请号：JP2000282687

申请日：2000-09-18

Applicant: SONY CORP

Inventor： EGUCHI NAOYA ,  EBISAWA KAN ,  MAEDA FUMISADA

IPC: G02F1/37 ,  G11B7/005 ,  G11B7/12 ,  G11B7/125 ,  H01S3/109

Abstract: PROBLEM TO BE SOLVED: To provide an optical disk player stably reproducing a recording data signal on a optical disk without being affected by dispersion in light quantity, output fluctuation and noises in a high frequency band when a light source emits a high harmonic laser beam. SOLUTION: When the light source 1 becomes a certain level or below, for preventing the pull-in of a servo signal, and for preventing the lead-out of its data signal and the servo signal, etc., for example, a voltage from a reference voltage source 31 of servo on/off is compared with a signal from an amplifier 30 by a comparator 32, and only when the result becomes a prescribed value or above, respective switching elements 28A-28D are closed, and the output signal of respective target AGC controlled data signal, pull-in signal, tracking servo signal, focus servo signal, etc., are take out, and when the light source 1 is the certain level or below, respective switches 28A-28D are opened, and the lead-out of respective signal are avoided.

公开(公告)号：JP2000019388A

公开(公告)日：2000-01-21

申请号：JP18491898

申请日：1998-06-30

Applicant: SONY CORP

Inventor： YAMAMOTO KENJI ,  ICHIMURA ISAO ,  MAEDA FUMISADA ,  WATANABE TOSHIO ,  SUZUKI AKIRA ,  OSATO KIYOSHI

IPC: G02B13/00 ,  G02B13/18 ,  G11B7/125 ,  G11B7/135 ,  G11B7/1378 ,  G11B7/1392 ,  G11B11/10

Abstract: PROBLEM TO BE SOLVED: To provide an optical element for correcting chromatic aberration coping with the short wavelength of a light source and an optical pickup device, an optical reproducing device and an optical recording and reproducing device having the optical element for correcting chromatic aberration and coping with the higher recording density and the larger capacity of an optical recording medium. SOLUTION: This optical element for correcting chromatic aberration 1 is disposed between the light source such as a semiconductor laser whose wavelength is =0.55, whose focal distance is >=1.8 mm and whose Abbe number of a (d)-line is =55 and a concave lens 1b whose Abbe number of the (d)-line is

公开(公告)号：JP2000011401A

公开(公告)日：2000-01-14

申请号：JP17922498

申请日：1998-06-25

Applicant: SONY CORP

Inventor： ICHIMURA ISAO ,  KAI SHINICHI ,  KIJIMA KOICHIRO ,  YAMAMOTO KENJI ,  MAEDA FUMISADA ,  OSATO KIYOSHI ,  WATANABE TOSHIO

IPC: G11B7/09

Abstract: PROBLEM TO BE SOLVED: To make a laser beam shorter in wavelength and an optical system higher in aperture and to enable stable and sure focus control by executing focus control by a focus error signal obtd. by synthesizing first and second focus signals varying in a signal level change with respect to a change in a defocus quantity. SOLUTION: The focus error signal TFE is formed by the second focus error signal FE2 of high sensitivity in a small range of the defocus quantity and the signal TFE is formed by correcting the signal level of the first signal FE1 in a wide focus controllable range on the outer region of the focus controllable range of the second signal FE2 at the time of synthesizing the focus error signal TFE in a synthesizing circuit 56. The signal TFE of the high sensitivity and the wide focus controllable range is thus formed by the second signal FE2 of the high sensitivity and the first signal FE1 of the wide focus controllable range in the synthesizing circuit 56. Then, the focus control is executed with the signal TFE.

公开(公告)号：JPH11110794A

公开(公告)日：1999-04-23

申请号：JP26748897

申请日：1997-09-30

Applicant: SONY CORP

Inventor： MAEDA FUMISADA ,  ICHIMURA ISAO ,  YAMAMOTO KENJI ,  OSATO KIYOSHI ,  WATANABE TOSHIO

IPC: G11B7/135 ,  G11B7/09 ,  G11B7/125 ,  G11B7/1372 ,  G11B7/1378 ,  G11B7/1392

Abstract: PROBLEM TO BE SOLVED: To provide a lens driving device, with which the number of apertures on an objective lens can be increased, spherical aberration can be suppressed and further focus servo can be stably performed at much higher speed. SOLUTION: The lens driving device is composed of a biaxial actuator 5 provided with a movable part freely movable in the direction of an optical axis and orthogonally with that optical axis, voice coil motor 11 provided with a movable part freely movable in the optical axis direction, source ball lens 3, to which light from a light source is made incident, and destination ball lens 4, to which light converged by the source ball lens is made incident. In this case, the voice coil motor 11 is attached to the movable part of the biaxial actuator 5, the source ball lens 3 is attached to the movable part of the voice coil motor 11, and the destination ball lens 4 is attached to the movable part of the biaxial actuator 5.

公开(公告)号：JPH10255304A

公开(公告)日：1998-09-25

申请号：JP5216297

申请日：1997-03-06

Applicant: SONY CORP

Inventor： MAEDA FUMISADA ,  SUZUKI AKIRA ,  KATO YOSHIAKI ,  KAI SHINICHI ,  YAMAMOTO KENJI

IPC: G11B7/135

Abstract: PROBLEM TO BE SOLVED: To precisely position the second lens against the first lens in the two-group lens even in the presence of errors in the external size of the first and the second lens. SOLUTION: The adjusting device 9 of the two-group lens is equipped with the first CCD camera 77, which is positioned far from the fourth face 27 of the second lens 22 oppositely facing an optical disk and which detects a reflected light emitted from the first laser beam source 73 and reflected on the fourth face 27; with the second CCD camera 78 which detects each diffraction pattern of the light penetrating the first lens 22 and the second lens 23; and with the third CCD camera 83 which detects the spot diameter of the beam obtainable through the first lens 22 again, from the reflection of the light made incident on the third face 26 of the second lens 23 through the opposing first lens 22.

公开(公告)号：JPH10255290A

公开(公告)日：1998-09-25

申请号：JP5803197

申请日：1997-03-12

Applicant: SONY CORP

Inventor： MAEDA FUMISADA ,  YAMAMOTO KENJI ,  KATO YOSHIAKI ,  KAI SHINICHI ,  SUZUKI AKIRA

IPC: G11B7/09

Abstract: PROBLEM TO BE SOLVED: To provide a double group lens which holds a distance between first and second lenses contact in a simple structure without requiring a complicate structure such as a position servo or the like and exerts sufficient stability in focus servo. SOLUTION: A double group lens 1 is constituted of a bobbin 8 engaging an outer circumferential part 3a of a second lens 3 thereby holding the second lens 3, a yoke 10 arranged at an outer circumferential part of a second face 5 of a first lens 2 providing a space part 9 to the bobbin 8, a coil 11 wound on an outer circumferential part of the bobbin 8, a magnet 12 fitted to the yoke 10 and separated from the coil 11, a spring 13 mechanically coupling the bottin 8 and the yoke 10, a viscous fluid 14 sealed in the space part 9, and a protecting material 15 disposed at an outer circumferential part of a fourth face 7 of the second lens 3.