公开(公告)号：JP2008185627A

公开(公告)日：2008-08-14

申请号：JP2007016651

申请日：2007-01-26

Applicant: Sony Corp ,  ソニー株式会社

Inventor： OKAMOTO YOSHIKI ,  MAEDA FUMISADA ,  SEO KATSUHIRO ,  KATO YOSHIAKI

IPC: G02B15/10 ,  G02B3/14 ,  G02B13/18 ,  G03B17/12 ,  G03B17/56

Abstract: PROBLEM TO BE SOLVED: To switch a wide angle region into/from an original focal-length region, without having to remove a wide converter.
SOLUTION: The wide converter 30 has a function to displace the focal length to a wide-angle side, and a liquid lens is used as one or more lenses 12 and 22 out of lenses constituting the wide converter 30. Either surfaces 3 and 6 of the liquid lenses 12 and 22 are constituted of a deformed film having light transmittance, and liquid inside the liquid lens is made variable so that the focal length may be varied.
COPYRIGHT: (C)2008,JPO&INPIT

Abstract translation: 要解决的问题：将广角区域切换到/从原始焦距区域开始，而不必移除宽的转换器。 解决方案：宽转换器30具有将焦距移动到广角侧的功能，并且液晶透镜用作构成宽转换器30的透镜中的一个或多个透镜12和22。任一表面3 液体透镜12和22中的6个由具有透光率的变形膜构成，液体透镜内部的液体可变，从而可以改变焦距。 版权所有（C）2008，JPO＆INPIT

公开(公告)号：JP2008089752A

公开(公告)日：2008-04-17

申请号：JP2006268217

申请日：2006-09-29

Applicant: Sony Corp ,  ソニー株式会社

Inventor： KATO YOSHIAKI ,  MAEDA FUMISADA

IPC: G02B3/12 ,  G02B3/14 ,  G02B7/04 ,  G11B7/135

Abstract: PROBLEM TO BE SOLVED: To reduce drive voltage which causes the change of the contact angle of a liquid material part by an electro wetting phenomenon. SOLUTION: The electro wetting device is equipped with the liquid material parts 4a and 4b having conductivity or polarity, and an electrode 1 applying voltage to the liquid material parts 4a and 4b while making a dielectric layer lie in between. The dielectric layer is composed as an anodic oxidation part 2 composed of metallic oxide formed by anodizing an electrode. Thus, film thickness is made thin; a dielectric constant is made high and the drive voltage is reduced. COPYRIGHT: (C)2008,JPO&INPIT

Abstract translation: 要解决的问题：为了降低驱动电压，其通过电润湿现象导致液体材料部分的接触角的变化。 电润湿装置配备有具有导电性或极性的液体材料部分4a和4b，以及在使电介质层位于其间的同时向液体材料部分4a和4b施加电压的电极1。 电介质层由阳极化电极形成的由金属氧化物构成的阳极氧化部分2构成。 因此，膜厚度变薄; 使介电常数高，驱动电压降低。 版权所有（C）2008，JPO＆INPIT

公开(公告)号：JP2005129100A

公开(公告)日：2005-05-19

申请号：JP2003360803

申请日：2003-10-21

Applicant: Sony Corp ,  ソニー株式会社

Inventor： MIYAKI TAKAHIRO ,  MAEDA FUMISADA ,  YAMAGISHI MASAHITO ,  INOUE NAOKI

IPC: G02B7/00 ,  G02B7/02 ,  G11B7/135 ,  G11B7/22

Abstract: PROBLEM TO BE SOLVED: To accurately perform centering of an object lens and an aberration compensation element which are used for an optical head device. SOLUTION: In a construction mode in which an aperture 21 is provided in a holding member 7 for the object lens 5 and the aberration compensating element 6, for performing center alignment of the object lens 5 and the aberration compensation element 6, through holes 23 are formed over three or more parts in the holding member 7, so that the external shape of the object lens 5 can be seen from the aberration compensating element 6 side, through the through holes. In another construction mode, an aperture is formed in the aberration compensating element 6, so that the centering of the object lens 5 and the aberration compensation element 6 can be performed accurately. COPYRIGHT: (C)2005,JPO&NCIPI

Abstract translation: 要解决的问题：准确地执行用于光学头装置的物镜和像差补偿元件的对中。 解决方案：在用于物镜5和像差补偿元件6的保持构件7中设置孔21用于执行物镜5和像差补偿元件6的中心对准的构造模式中，通过 孔23形成在保持构件7中的三个以上部分上，从而可以通过透孔从像差补偿元件6侧看到物镜5的外部形状。 在另一种构造模式中，在像差补偿元件6中形成孔径，从而能够准确地进行物镜5和像差补偿元件6的对中。 版权所有（C）2005，JPO＆NCIPI

公开(公告)号：JPH10188320A

公开(公告)日：1998-07-21

申请号：JP34090496

申请日：1996-12-20

Applicant: SONY CORP

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

IPC: G11B7/135 ,  G11B7/09 ,  G11B7/125 ,  G11B7/1372 ,  G11B7/1374 ,  G11B7/24 ,  G11B11/105

Abstract: PROBLEM TO BE SOLVED: To record or reproduce information in high density by specifying the thickness of an optical disk and integrally performing focus controls of an objective lens and a front lens while making the total numerical aperture of the objective lens and the front lens a value equal to or above a specific value. SOLUTION: When there is a variation in thickness of a substrate 61, a spherical abberation is generated. Then, in the case a two-group lens having a high numerical aperture is used as a lens unit, when the thickness of the substrate 61 is fluctuated remarkably, the quality of a reproduced signal is impaired largely. Since when the thickness of the substrate is thickened too much, the influence due to a skew becomes large, it is desirable to make the thickness of the substrate to be within the range of 0.1mm to 0.3mm and it is made to be =0.8 because the multiple of about 1.8 times is multiplied with respect to the numerical aperture of an incident light.

公开(公告)号：JPH09245391A

公开(公告)日：1997-09-19

申请号：JP5567796

申请日：1996-03-13

Applicant: SONY CORP

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

IPC: G11B11/105 ,  G11B5/02 ,  G11B11/10

Abstract: PROBLEM TO BE SOLVED: To save power and to miniaturize and inghten a device. SOLUTION: A tip ball lens 43 irradiates laser light generated by a semiconductor laser and incident through a prescribed optical system on a prescribed position of a magneto-optical disk 1. A magnetic field modulation coil 42 generates magnetic field answering to a prescribed recording signal to apply it to the irradiative position of the laser light. The magnetic field modulation coil 42 and a radiator 44 are loaded on the periphery of the tip ball lens 43, and since the magnetic field modulation coil 42 is arranged on the position the most suitable for the recording layer of the disk 1 when the laser light is focused, it can apply the magnetic field of sufficient strength by irreducible minimum power.

公开(公告)号：JPH08212579A

公开(公告)日：1996-08-20

申请号：JP1518595

申请日：1995-02-01

Applicant: SONY CORP

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

IPC: G11B11/10 ,  G11B7/09 ,  G11B7/135 ,  G11B11/105

Abstract: PURPOSE: To suppress the occurrence of spherical aberration due to dispersion in thickness of a solid immersion lens and a magneto-optical disk. CONSTITUTION: The magneto-optical disk 1 is irradiated with light converged by an objective lens 41 through a plate 42 and a solid immersion lens 43. A holder 44 holding the objective lens 41 and the plate 42 is focus-controlled and tracking-controlled respectively by a focus actuator 45 and a tracking actuator 46. Further, an SIL actuator 48 is driven corresponding to the change in capacity of a capacitor formed between the holder 44 and the holder 47, and it is controlled so that an interval between the holders 47 and 44 becomes a fixed value.

公开(公告)号：JPH0696450A

公开(公告)日：1994-04-08

申请号：JP32575292

申请日：1992-12-04

Applicant: SONY CORP

Inventor： EGUCHI NAOYA ,  EBISAWA KAN ,  MAEDA FUMISADA

IPC: G11B7/00 ,  G11B7/005 ,  G11B7/09 ,  G11B7/125

Abstract: PURPOSE:To eliminate deterioration of a reproducing signal due to the variation of a light source, deviation of a servo, generation of dropout, and so on. CONSTITUTION:The signal outputted from a photodetecting element 22 for signal read out is converted to a voltage signal by a current-voltage converter 25. A specified calculation is performed by a matrix amplifier 26 to take out respectively a data signal, i.e., RF signal, pull-in signal for servo, tracking servo signal, focus signal, etc., and those signals are inputted to the numerators of division devices 27A, 27B, 27C and 27D. A monitor signal from the photodetecting element 23 for monitoring the output variation of light source is converted to the voltage signal by a current-voltage converter 29. Then, this monitor signal is inputted to the denominators of each division device 27A, 27B, 27C and 27D through an amplifier 30.

公开(公告)号：JPH064899A

公开(公告)日：1994-01-14

申请号：JP18478792

申请日：1992-06-19

Applicant: SONY CORP

Inventor： EGUCHI NAOYA ,  MAEDA FUMISADA

IPC: G11B7/08 ,  G11B7/125 ,  G11B7/135

Abstract: PURPOSE:To reduce a number of parts and to obtain a small pickup device facilitating the adjustment of an optical axis. CONSTITUTION:A SHG laser light transmitted in the direction of Y axis by means of the lifting mirror 19 of a laser generating device passes through a beam expander 23 and a diffraction grating 24, is transmitted to a polarization beam splitter 25, passes through a collimator lens 26 and a 1/4 wavelength plate 27 and is converged on the recording surface of an optical disk 22 by means of an objective lens 21. The returned light from the recording surface of an optical disk 22 is made incident again on the polarization beam splitter 25 through the objective lens 21, the 1/4 wavelength plate 27 and the lens 26, received by a photodetector 29 through a multiple lens 28 and the recorded signal is reproduced.

公开(公告)号：JPH05144075A

公开(公告)日：1993-06-11

申请号：JP30782191

申请日：1991-11-22

Applicant: SONY CORP

Inventor： WATANABE TOSHIO ,  EBISAWA KAN ,  MAEDA FUMISADA

IPC: G02B5/18 ,  G11B7/08 ,  G11B7/095 ,  G11B7/135

Abstract: PURPOSE:To provide interchangeability to plural kinds of optical disk by obtaining plural light spots with a grating. CONSTITUTION:A grating 3 by which plural light spots are obtained is turned around an axis O orthogonal to the grating surface by a turning means 12 to change the intervals in the direction orthogonal to the track of an optical disk 7. Positional relations between the track of the disk 7 and light spots are detected by a detecting means 13 to detect the positional deviation of turning of the grating 3, and the turning position is properly set so that intervals of light spots for tracking servo correspond to the track pitch of the disk 7. Thus, interchangeability to plural kinds of optical disk different by track pitch is provided, and the degree of modulation of error in the tracking servo is surely obtained, and a high RF level is obtained in the two-channel constitution.

公开(公告)号：JP2014127651A

公开(公告)日：2014-07-07

申请号：JP2012285027

申请日：2012-12-27

Applicant: Sony Corp ,  ソニー株式会社

Inventor： FUJITA GORO ,  OKA MICHIO ,  YOSHIDA HIROSHI ,  MAEDA FUMISADA ,  UEDA MITSUNORI ,  TANAKA KENJI

IPC: H01S5/14

CPC classification number: H01S5/141 ,  H01S3/1055 ,  H01S5/0064 ,  H01S5/02248 ,  H01S5/0265 ,  H01S5/0267 ,  H01S5/028 ,  H01S5/0657 ,  H01S5/4006 ,  H01S5/50 ,  H01S2301/02

Abstract: PROBLEM TO BE SOLVED: To enable obtaining a more stable output.SOLUTION: A laser emitting device includes a semiconductor laser for emitting light having a prescribed wavelength, a grating which is provided at the latter part of the semiconductor laser while forming a resonance structure between itself and the semiconductor laser by reflecting emitted light from the semiconductor laser, and from which a part of the emitted light is taken out to the outside as output light, and at least one cylindrical lens provided between the semiconductor laser and the grating so that the light emitting surface of the semiconductor laser and the reflection surface of the grating serve as a confocal.

Abstract translation: 要解决的问题：能够获得更稳定的输出。解决方案：激光发射装置包括用于发射具有规定波长的光的半导体激光器，设置在半导体激光器的后半部分的光栅，同时形成谐振结构 其自身和半导体激光器通过反射来自半导体激光器的发射光，并且将一部分发射的光从该半导体激光器中取出到外部作为输出光，以及至少一个柱面透镜，设置在半导体激光器和光栅之间，使得 半导体激光器的发光表面和光栅的反射表面用作共焦。