公开(公告)号：JPH09251661A

公开(公告)日：1997-09-22

申请号：JP5886796

申请日：1996-03-15

Applicant: SONY CORP

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

IPC: G11B19/12 ,  G11B7/135

Abstract: PROBLEM TO BE SOLVED: To reproduce optical disks having different recording densities. SOLUTION: A first optical part 21 generates a laser beam and converges it with a prescribed numerical aperture corresponding to an optical disk 11a whose data recording density is low. A second optical part 22 converts the converged light from the first optical part 21 into the converged light having a prescribe numerical aperture corresponding to an optical disk 11b whose data recording density is high. When the optical disk 11 to be reproduced is the optical disk 11a, since the second optical part 22 is retreated from between the first optical part 21 and the optical disk 11a, the optical disk 11a is directly irradiated with the laser beam from the first optical part 21 and when the optical disk 11 is the optical disk 11b, since the second optical part 22 is inserted in between the first optical part 21 and the optical disk 11b, the optical disk 11b is irradiated with the laser beam from the second optical part 22.

公开(公告)号：JPH09243805A

公开(公告)日：1997-09-19

申请号：JP5567696

申请日：1996-03-13

Applicant: SONY CORP

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

IPC: G02B3/00 ,  B29D11/00 ,  G01M11/02 ,  G02B3/02 ,  G02B27/00 ,  G11B7/00 ,  G11B7/125 ,  G11B7/135 ,  G11B7/1372 ,  G11B7/1374

Abstract: PROBLEM TO BE SOLVED: To design an objective lens and front lens constituting a two-group lens by discretely evaluating the aberrations possessed by the objective lens and the front lens. SOLUTION: The two-group lens composed of the objective lens LA-1 and the front lens LB-1 already corrected to be made aberrationless with respect to a substrate having a thickness d2 is subjected to measurement of the aberration with a substrate 71 having a thickness d1 by using an interferometer 61. At this time, the generated aberrations are corrected by correcting only the curved surface of the objective lens LA-1. The two-group lens formed in such a manner is capable of recording or reproduction of the information to and from a disk having the substrate of the thickness d1 by using the objective lens LA-1 and the front lens LB-1 and is capable of recording or reproduction of the information to and from the disk 2-2 having the thickness d2 by using only the front lens LB-1.

公开(公告)号：JPH07122796A

公开(公告)日：1995-05-12

申请号：JP26513393

申请日：1993-10-22

Applicant: SONY CORP

Inventor： HORIE KAZUYOSHI ,  MAEDA FUMISADA

IPC: G02F1/37 ,  B23K26/21 ,  H01S3/02 ,  H01S3/109

Abstract: PURPOSE:To enable a laser welding beam to be easily focused when a lens tube and a lens tube support are welded together with a laser beam by a method, wherein the lens tube and the lens tube>e support are welded together with a laser welding beam through an overlap penetration welding manner. CONSTITUTION:A laser welding beam projected from a lens welder used for overlap penetration welding is made to impinge on the center of a lens tube 11A where a lens holder 43 is located, and a lens is fixed by lens fixing glasses 45a and 45b located inside the lens holder 43. Tapped holes 40a and 40b used for temporarily fixing the lens tube 11A and the lens tube support 11B together are provided to the upside of the lens tube 11A at spots located at its lengthwise ends, and welding spot-faced parts 41a and 41b which serve as welded joints when the lens tube 11A and the lens tube support 11B are welded together with a laser welding beam are provided under the tapped holes 40a and 40b. By this setup, a lens tube and a lens tube support can be joined together high enough in bonding strength.

公开(公告)号：JPH0676344A

公开(公告)日：1994-03-18

申请号：JP22754192

申请日：1992-08-26

Applicant: SONY CORP

Inventor： EGUCHI NAOYA ,  OKA MICHIO ,  MAEDA FUMISADA

IPC: G11B7/135 ,  H01S3/109 ,  H01S5/00 ,  H01S3/18

Abstract: PURPOSE:To prevent the occurrence of a laser output fluctuation caused by interference noises and a degradation in signal characteristics by constituting a reciprocating folded optical path in the moving direction along the optical disk of an objective lens driving section of an optical pickup. CONSTITUTION:In an optical disk.pickup which has an objective lens driving section 1 and a light source section 2, the section 1 is constituted so that it is separated from an optical block 3 which has the section 2 and moves a direction X along the surface of an optical disk 4. An optical path 5, which keeps the distance between the section 2 and the optical disk 4 at a prescribed distance and is for folded reciprocation in the X direction, is formed in the optical path between the section 2 and an optical disk 46. Since the path 5 is formed in the X direction and an optical path 6, which is directed to the optical disk 4, is formed by a polarizing beam split PBS1, the distance between the section 2 and the optical disk 4 is kept constant by moving the section 6 together with the movement of the section 1.

公开(公告)号：JPH065989A

公开(公告)日：1994-01-14

申请号：JP16150492

申请日：1992-06-19

Applicant: SONY CORP

Inventor： EGUCHI NAOYA ,  MAEDA FUMISADA

IPC: G11B7/125 ,  H01S3/02 ,  H01S5/00 ,  H01S3/18

Abstract: PURPOSE:To let only light with desired wavelength pass to the outside, and to prevent return of returning light into a resonator of the laser generation device, by sealing a laser generation device in a case to the open air with a blocking member, and by mounting obliquely an optical element having optical wavelength selectivity on a window provided on the blocking member. CONSTITUTION:A laser generation part and a mirror which constitute a laser generation device are housed in the open space inside of a case body 11. A cover 12 serves as an interrupter between inside of the case and the open air. The cover 12 is provided with a window which makes pass the output light coming from the laser generation device to the outside. The surface of the window 13 serves as a reflection preventing film against the desired light by using glass, quartz and/or crystal, and it serves as an interference filter against other light, thereby an optical element having optional wavelength is formed. The window 13 is mounted on the cover 12 by using a supporter 14 in such a way that the angle is inclined by 0 to the optical axis of output light from the laser generation device.

公开(公告)号：JP2012243336A

公开(公告)日：2012-12-10

申请号：JP2011110268

申请日：2011-05-17

Applicant: Sony Corp ,  ソニー株式会社

Inventor： FUJITA GORO ,  MAEDA FUMISADA ,  YOSHIDA HIROSHI ,  OKA MICHIO

IPC: G11B7/135 ,  G11B7/125

Abstract: PROBLEM TO BE SOLVED: To prevent degradation in recording performance while preventing increase in the size and cost of a light source, in an optical recording system that uses, as a recording light source, an MOPA (Master Oscillator Power Amplifier) that comprises a mode lock laser part including an external resonator, and a semiconductor light modulator used for amplifying and modifying a laser beam emitted from the mode lock laser part.SOLUTION: As an isolator part disposed between the mode lock laser part and the semiconductor amplifier, one composed of a combination of a polarization beam splitter and a 1/4 wavelength plate is provided. This makes it possible to at least remove an SOA self-incident component that is the most influential in an optical recording system, and to prevent degradation in recording performance. Additionally, the comparison with a conventionally used Faraday isolator makes it possible to reduce the size and cost of the isolator part.

Abstract translation: 解决的问题为了防止记录性能的降低，同时防止光源的尺寸和成本的增加，在使用作为记录光源的MOPA（主振荡器功率放大器）的光学记录系统中， 包括包括外部谐振器的模式锁定激光器部分和用于放大和修改从模式锁定激光器部分发射的激光束的半导体光调制器。 解决方案：作为设置在模式锁定激光器部分和半导体放大器之间的隔离器部件，提供由偏振分束器和1/4波长板的组合构成的隔离器部件。 这使得可以至少去除在光学记录系统中最有影响力的SOA自身事件组件，并且防止记录性能的降低。 另外，与常规使用的法拉第隔离器的比较使得可以减小隔离器部件的尺寸和成本。 版权所有（C）2013，JPO＆INPIT

公开(公告)号：JP2011008121A

公开(公告)日：2011-01-13

申请号：JP2009152892

申请日：2009-06-26

Applicant: Sony Corp ,  ソニー株式会社

Inventor： SUZUKI AKIRA ,  MAEDA FUMISADA ,  SUZUKI MAMORU ,  TANAKA KAYOKO ,  SEO KATSUHIRO

IPC: G02B3/14 ,  G02B7/09 ,  H04N5/225

CPC classification number: G02B3/14

Abstract: PROBLEM TO BE SOLVED: To provide a varifocal lens provided with a driving mechanism capable of deforming a lens face by changing a filled amount of a liquid medium in a lens inside, in the varifocal lens using the liquid medium as a refractive medium for a light.SOLUTION: This varifocal lens 1 includes a lens part 13, and a liquid medium storage part 17. The lens part 13 includes a pair of light transmissive members 12, 14 of which at least one is deformable, and one kind of light transmissive liquid medium 15 sealed between the pair of light transmissive members 12, 14. The liquid medium storage part 17 includes a storage chamber 19 flow-communicated with the lens part 13 and filled with the liquid medium 15. The filled amount of the liquid medium 15 in the lens part 13 is regulated by changing a volume of the storage chamber 19, so as to change a surface shape of the deformable light transmissive member 14.

Abstract translation: 要解决的问题：提供一种变焦透镜，其设置有能够通过改变透镜内部的液体介质的填充量而使透镜面变形的驱动机构，在使用液体介质作为光的折射介质的变焦透镜中 该变焦透镜1包括透镜部分13和液体介质存储部分17.透镜部分13包括一对透光部件12,14，其中至少一个可变形，并且一种透光液体 介质15被密封在一对透光构件12,14之间。液体介质储存部分17包括与透镜部分13流动连通并且填充有液体介质15的储存室19.液体介质15的填充量在 通过改变存储室19的体积来调节透镜部分13，以便改变可变形透光构件14的表面形状。

公开(公告)号：JP2010097200A

公开(公告)日：2010-04-30

申请号：JP2009206263

申请日：2009-09-07

Applicant: Sony Corp ,  ソニー株式会社

Inventor： TANAKA KAYOKO ,  KATO YOSHIAKI ,  MAEDA FUMISADA ,  SUZUKI AKIRA ,  SAKAIGAWA SACHIKO

IPC: G02B3/14 ,  G02B7/04 ,  G02B7/28 ,  G02B15/10 ,  H04N5/225

CPC classification number: G02B3/14 ,  G02B1/041

Abstract: PROBLEM TO BE SOLVED: To provide a liquid lens that has a low modulus of volume change due to liquid swelling of a deformation film, has no liquid exudation, is chemically stable, and is capable of securing a large variable-focus range.
SOLUTION: The lens has a pair of transparent members 2 and 3, at least one of which is formed of a deformation film which is capable of deformation, and a transparent liquid 4, which fills a sealed space 5 sandwiched between the pair of transparent members 2 and 3, with the deformation film 3 and the liquid 4 which is configured with the following combination of materials. (1) A fluorine-based elastomer film and silicone oil which does not have affinity for the fluorine-based elastomer film. (2) Preferably, a fluorine-based elastomer film and a silicone oil with a molecular weight of 500 or higher and a viscosity of 50 (25°C mm
2 /s) or greater. (3) Preferably, a fluorine-based elastomer film and a methylphenyl-based silicone oil or a dimethyl-based silicone oil with a molecular weight of 500 or higher and a viscosity of 50 (25°C mm
2 /s) or greater. (4) A polyurethane-based elastomer film and a dimethyl-based silicone oil.
COPYRIGHT: (C)2010,JPO&INPIT

Abstract translation: 要解决的问题：为了提供由于变形膜的液体膨胀而具有低体积变化的液体透镜，没有液体渗出，是化学稳定的，并且能够确保大的可变焦距范围 。 解决方案：透镜具有一对透明构件2和3，其至少一个由能够变形的变形膜形成，并且透明液体4填充夹在该对之间的密封空间5 透明构件2和3，变形膜3和液体4由以下组合材料构成。 （1）对氟系弹性体膜不具有亲和性的氟系弹性体膜和硅油。 （2）优选氟基弹性体膜和分子量为500以上，粘度为50（25℃×SP 2 /秒）以上的硅油。 （3）优选分子量为500以上，粘度为50（25℃×SP 2×SP SP）的氟系弹性体膜和甲基苯基系硅油或二甲基硅油 > / s）或更大。 （4）聚氨酯系弹性体膜和二甲基硅油。 版权所有（C）2010，JPO＆INPIT

公开(公告)号：JP2006031901A

公开(公告)日：2006-02-02

申请号：JP2004213590

申请日：2004-07-21

Applicant: Sony Corp ,  ソニー株式会社

Inventor： YAMAMOTO KENJI ,  MAEDA FUMISADA ,  IMAI SATOSHI ,  SEO KATSUHIRO ,  KATO YOSHIAKI ,  OKAMOTO YOSHIKI ,  TAMURA TATSUMOTO

IPC: G11B7/135 ,  G02B13/00

Abstract: PROBLEM TO BE SOLVED: To provide an objective lens for which components of third order and fifth order of spherical aberrations, caused by a thickness error of cover layers or difference of thickness are compensated simultaneously and aberration compensation can be performed properly, even in an optical system in which high order aberration is caused, and to provide an optical pickup apparatus using this, an optical recording and reproducing apparatus, and an aberration-compensating method. SOLUTION: An objective lens 3 for converging light on a recording plane of an optical recording medium and performing recording and/or reproducing is constituted so that when spherical aberration of third order and fifth order, caused by a thickness error of cover layers or difference of thickness of the optical recording medium 10, are denoted respectively as SA3(C), SA5(C), and spherical aberration of third order and fifth order, caused by a magnification aberration of the objective lens, are denoted respectively as SA3(L), SA5(L), 0.1 COPYRIGHT: (C)2006,JPO&NCIPI

Abstract translation: 要解决的问题：为了提供一种物镜，其由覆盖层的厚度误差或厚度差引起的三阶和五阶球面的分量被同时补偿并且可以适当地执行像差补偿，甚至 在其中引起高阶像差的光学系统中，并且提供使用它的光学拾取装置，光学记录和再现装置以及像差补偿方法。 解决方案：用于将光聚焦在光学记录介质的记录平面上并执行记录和/或再现的物镜3被构造成使得当覆盖层的厚度误差引起的三阶和五阶的球面像差 或光学记录介质10的厚度差分别表示为SA3（C），SA5（C），由物镜的倍率像差引起的三阶和五阶球面像差分别表示为SA3 （L），SA5（L），0.1（SA58L）/ SA3（L）/ SA5（C）/ SA＃（C）<1.9。 版权所有（C）2006，JPO＆NCIPI

公开(公告)号：JP2005243237A

公开(公告)日：2005-09-08

申请号：JP2005149786

申请日：2005-05-23

Applicant: Sony Corp ,  ソニー株式会社

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

IPC: G11B7/22

Abstract: PROBLEM TO BE SOLVED: To precisely perform the positioning of a 2nd lens to a 1st lens of two lenses of a group even if contours of the 1st and 2nd lenses have errors. SOLUTION: The tilt detecting device is provided with two lenses of a group composed of the 1st lens 22 and the 2nd lens with a counter face 27 faced to an optical recording medium, a reference plane on which the two lenses of a group 21 are mounted, and a condenser lens 5 for irradiating the counter face 27 of the 2nd lens 23 with laser light emitted from a laser light source 2 in a focused state, and radiates the focused laser light toward the counter face 27 of the 2nd lens 23, and detects, in the neighborhood of the focal point of the light reflected by this counter face 27, a tilt of the above 2nd lens to the 1st lens by detecting a position on a plane perpendicular to the optical axis of the reflected light. COPYRIGHT: (C)2005,JPO&NCIPI

Abstract translation: 要解决的问题：即使第一和第二透镜的轮廓有误差，即使将第二透镜精确地执行到组的两个透镜的第一透镜的定位。

解决方案：倾斜检测装置设置有由第一透镜22和第二透镜组成的组的两个透镜，其中面对着光学记录介质的对置面27，组的两个透镜的参考平面 21，以及聚光透镜5，用于以聚焦状态从激光光源2发射的激光照射第二透镜23的对置面27，并将聚焦的激光照射到第二透镜的对置面27 并且通过检测与反射光的光轴垂直的平面上的位置，在该对置面27反射的光的焦点附近，检测上述第2透镜与第1透镜的倾斜。 版权所有（C）2005，JPO＆NCIPI