公开(公告)号：KR20070098558A

公开(公告)日：2007-10-05

申请号：KR20070029124

申请日：2007-03-26

Applicant: SONY CORP

Inventor： SATO JIN ,  YAMADA TAKATOSHI ,  KAWAKITA SATOSHI ,  KANNO KYU ,  AIBA MOTOO

IPC: G11B7/135 ,  G02B5/18

CPC classification number: G11B7/13922 ,  G11B7/1353 ,  G11B7/22 ,  G11B2007/0006

Abstract: A diffraction element, an optical pickup and an optical disc apparatus are provided to improve optical property of small aberration and to reduce the aberration of the diffraction element by forming a second diffraction element without distortion. A diffraction element, an optical pickup and an optical disc apparatus comprise a first member, a second member and a third member. The first member is made of a transparent injection molded material, and has two optical surfaces. The second member is installed at one optical surface of the first member to form a first diffraction pattern on the surface and a first ultraviolet curable resin(100A) having a refraction index in a range of ±0.013 for the refraction index of the first member. The third member is mounted on the other optical surface of the first member to form a second diffraction element on the surface and a second ultraviolet curable resin(100B) having the refraction index in the range of ±0.013 for the refraction index of the first member.

Abstract translation: 提供衍射元件，光学拾取器和光盘装置以改善小像差的光学性质并且通过形成第二衍射元件而没有变形来减少衍射元件的像差。 衍射元件，光学拾取器和光盘装置包括第一构件，第二构件和第三构件。 第一构件由透明注塑材料制成，并具有两个光学表面。 第二构件安装在第一构件的一个光学表面上以在表面上形成第一衍射图案，并且对于第一构件的折射率，折射率在±0.013的范围内的第一紫外线可固化树脂（100A）。 第三构件安装在第一构件的另一光学表面上以在表面上形成第二衍射元件，并且第二构件的折射率的折射率在±0.013范围内的第二紫外线固化树脂（100B） 。

公开(公告)号：AU7242898A

公开(公告)日：1999-11-08

申请号：AU7242898

申请日：1998-04-16

Applicant: SONY PRECISION ENGINEERING CEN ,  SONY CORP

Inventor： HUNG KAI MAN ,  UEDA HIROYUKI ,  YAMADA TAKATOSHI

IPC: G01B9/02 ,  G01M11/02

公开(公告)号：SG73658A1

公开(公告)日：2000-06-20

申请号：SG1999003312

申请日：1999-07-07

Applicant: SONY CORP

Inventor： YAMADA TAKATOSHI ,  FUKASAWA NORIO

IPC: G11B7/08 ,  G11B7/125 ,  G11B7/135 ,  G11B7/1374 ,  G11B7/00

Abstract: An optical lens composed of a transparent material, wherein one surface thereof on a light source side is a convex aspherical surface of rotation symmetry defined by a function relative to the radial distance from an optical axis. The aspherical surface is shaped to be a curved one without any stepped region with regard to the radial direction in the defined area, and has a portion where the derivatives of the function are discontinuous at a predetermined radial position. Although not equipped with an iris diaphragm, this optical lens is capable of eliminating an incident light beam outside the optical effective surface thereof without deteriorating the optical characteristics.

公开(公告)号：JP2010060587A

公开(公告)日：2010-03-18

申请号：JP2008223079

申请日：2008-09-01

Applicant: Sony Corp ,  ソニー株式会社

Inventor： YAMADA TAKATOSHI ,  SUGAWARA TOSHIAKI ,  TAKADA AKIO

IPC: G02B5/30 ,  G02F1/1335

Abstract: PROBLEM TO BE SOLVED: To provide a method for producing a polarizing element, which can easily obtain a polarizing element with a large area in which the distribution of the spectral characteristics in the plane is uniform and which has high reliability in a short time, and to provide a polarizing element produced with the method for producing a polarizing element.
SOLUTION: The method comprises: an antireflective film-forming step where an antireflective film 12 with an antireflective function to visible light vertically incident and ultraviolet light obliquely incident on the main face of a substrate 11a is formed on either main face of the substrate 11a; a lithography step where a resist layer 13a is formed on the other main face of the substrate 11a, and interference exposure and development using the ultraviolet light are performed regarding the resist layer 13, and the patterning of the resist layer 13 is performed; an etching step where the other main face side of the substrate 11a is subjected to etching, and ruggedness with a diffraction grating shape is formed on the other main face; and an inorganic fine particle layer-forming step where an inorganic fine particle layer 15 is formed on the tip part or one side face part of the projecting part in the ruggedness.
COPYRIGHT: (C)2010,JPO&INPIT

Abstract translation: 解决的问题：提供一种偏振元件的制造方法，其可以容易地获得具有大面积的偏振元件，其中平面中的光谱特性的分布是均匀的并且在短时间内具有高的可靠性 并提供用偏振元件的制造方法制造的偏光元件。 解决方案：该方法包括：防反射膜形成步骤，其中具有对可见光垂直入射的抗反射功能的抗反射膜12和倾斜入射在基板11a的主面上的紫外光形成在 基板11a; 在基板11a的另一个主面上形成抗蚀剂层13a的光刻工序，对抗蚀剂层13进行紫外线的干涉曝光和显影，进行抗蚀剂层13的图案化。 蚀刻步骤，其中衬底11a的另一个主面侧进行蚀刻，并且在另一个主面上形成具有衍射光栅形状的凹凸; 以及无机细粒层形成工序，其中在粗糙度的突出部的前端部或一侧面部形成无机细粒层15。 版权所有（C）2010，JPO＆INPIT

公开(公告)号：JP2008159140A

公开(公告)日：2008-07-10

申请号：JP2006345863

申请日：2006-12-22

Applicant: Sony Corp ,  ソニー株式会社

Inventor： KAWAKITA SATOSHI ,  YAMADA TAKATOSHI ,  SATO HITOSHI ,  SUGANO TAKASHI ,  AIBA MOTOO

IPC: G11B7/135 ,  G02B5/18 ,  G11B7/22

Abstract: PROBLEM TO BE SOLVED: To prepare a diffraction element having a fine and accurate diffraction pattern. SOLUTION: When a diffraction pattern layer 20D wherein the diffraction pattern PTc in a step shape of a plurality of steps is formed is provided by pressurizing a metal mold to a photosetting resin 100A applied on one surface of a base member 20C and irradiating the photosetting resin with UV to cure the resin, each diffraction pattern layer 20D is formed into a plurality of layers for every step of a part of the diffraction patterns. Thereby, the depth of the shape of the metal mold is reduced to enhance accuracy thereof and the diffraction element 20 having satisfactory shape accuracy and high diffraction efficiency is obtained. COPYRIGHT: (C)2008,JPO&INPIT

Abstract translation: 要解决的问题：制备具有精细且准确的衍射图案的衍射元件。 解决方案：当通过将金属模加压到施加在基底构件20C的一个表面上的光固化树脂100A上并且照射到多个台阶形状的步进形状的衍射图案PTc的衍射图案层20D 具有UV固化树脂的光固化树脂，每个衍射图案层20D对于衍射图案的一部分的每个步骤形成多层。 由此，金属模具的形状的深度减小以提高其精度，并且获得具有令人满意的形状精度和高的衍射效率的衍射元件20。 版权所有（C）2008，JPO＆INPIT

公开(公告)号：JP2007293956A

公开(公告)日：2007-11-08

申请号：JP2006118370

申请日：2006-04-21

Applicant: Sony Corp ,  ソニー株式会社

Inventor： KAWAKITA SATOSHI ,  AIBA MOTOO ,  SUGANO TAKASHI ,  SATO HITOSHI ,  YAMADA TAKATOSHI

IPC: G11B7/135 ,  G11B7/22

CPC classification number: G11B7/1275 ,  G11B7/1353 ,  G11B7/13922 ,  G11B2007/0006

Abstract: PROBLEM TO BE SOLVED: To achieve an optical pickup and optical disk drive which can exhibit successful property to a plurality of kinds of optical disks. SOLUTION: An abberation generated by oblique incidence to an objective lens unit 9 is compensated by shifting and arranging a first diffraction pattern PTd from an optical axis by having positioned the first diffraction pattern PTd which makes an optical beam Ld of a first wavelength which carries out oblique incidence to the objective lens unit 9 to an optical axis of the object lens unit 9, so that the abberation of the optical beam Ld of the first wavelength which is diffracted by the first diffraction pattern PTd and condensed with an objective lens 21 becomes minimum. COPYRIGHT: (C)2008,JPO&INPIT

Abstract translation: 要解决的问题：为了实现可以对多种光盘呈现成功性能的光学拾取器和光盘驱动器。 解决方案：通过将形成第一波长的光束Ld的第一衍射图案PTd定位，通过从光轴移动和布置第一衍射图案PTd来补偿通过倾斜入射到物镜单元9产生的像差 其对物镜单元9的光轴进行倾斜入射，从而使由第一衍射图案PTd衍射的第一波长的光束Ld与物镜会聚， 21变得最小。 版权所有（C）2008，JPO＆INPIT

公开(公告)号：JP2007293952A

公开(公告)日：2007-11-08

申请号：JP2006118364

申请日：2006-04-21

Applicant: Sony Corp ,  ソニー株式会社

Inventor： KAWAKITA SATOSHI ,  AIBA MOTOO ,  SUGANO TAKASHI ,  SATO HITOSHI ,  YAMADA TAKATOSHI

IPC: G11B7/135

Abstract: PROBLEM TO BE SOLVED: To achieve an optical pickup and an optical disk drive which can present successful property to a plurality of kinds of optical disks. SOLUTION: A stray light reflected with the diffraction element 20 is diverted from the optical axis CL by providing a diffraction component 20 with a net angle θ to an optical axis CL and an adverse effect by the stray light are prevented, and an abberation in optical beams of first and second wavelengths generated by the inclined diffraction element 20 are compensated by shifting and arranging the first diffraction pattern PTc and the second diffraction pattern PTd from the optical axis CL. COPYRIGHT: (C)2008,JPO&INPIT

Abstract translation: 要解决的问题：实现可以向多种光盘呈现成功性的光学拾取器和光盘驱动器。 解决方案：通过提供具有与光轴CL的净角度θ的衍射分量20并且防止杂散光的不利影响，由衍射元件20反射的杂散光从光轴CL转向，并且 通过从光轴CL移位和布置第一衍射图案PTc和第二衍射图案PTd来补偿由倾斜衍射元件20产生的第一和第二波长的光束的偏移。 版权所有（C）2008，JPO＆INPIT

公开(公告)号：JP2007292885A

公开(公告)日：2007-11-08

申请号：JP2006118369

申请日：2006-04-21

Applicant: Sony Corp ,  ソニー株式会社

Inventor： YAMADA TAKATOSHI ,  KAWAKITA SATOSHI ,  SATO HITOSHI ,  SUGANO TAKASHI ,  AIBA MOTOO

IPC: G02B5/18 ,  G02B1/04 ,  G11B7/135

Abstract: PROBLEM TO BE SOLVED: To obtain a diffractive element exhibiting preferable characteristics. SOLUTION: The diffractive element is produced by forming a cover layer 20D and a diffraction pattern layer 20E on an upper face 20Ca and a lower face 20c, respectively, of a base layer 20C comprising an injection molded product. The diffraction pattern layer 20E and the cover layer 20D are successively formed by a UV replica method, in the order of higher glass transition point Tg of the UV-curing resin to be used. COPYRIGHT: (C)2008,JPO&INPIT

Abstract translation: 要解决的问题：获得具有优选特性的衍射元件。 解决方案：通过在包括注射成型产品的基底层20C的上表面20Ca和下表面20c上形成覆盖层20D和衍射图案层20E来产生衍射元件。 衍射图案层20E和覆盖层20D依次使用紫外线固化树脂的玻璃化转变温度Tg高的UV复制方法形成。 版权所有（C）2008，JPO＆INPIT

公开(公告)号：JP2007273013A

公开(公告)日：2007-10-18

申请号：JP2006098707

申请日：2006-03-31

Applicant: Sony Corp ,  ソニー株式会社

Inventor： YAMADA TAKATOSHI ,  KAWAKITA SATOSHI ,  SATO HITOSHI ,  SUGANO TAKASHI ,  AIBA MOTOO

IPC: G11B7/135 ,  G02B5/18

CPC classification number: G11B7/1374 ,  G02B5/1866 ,  G11B7/1275 ,  G11B7/1353 ,  G11B2007/0006

Abstract: PROBLEM TO BE SOLVED: To easily design a diffraction element having satisfactory characteristics. SOLUTION: When a diffraction grating DG wherein a wavelength λ not to be diffracted and a wavelength λ to be diffracted are respectively determined as design targets is designed, values of refractive indices n of materials M1 and M2 to be candidates in each wavelength λ are substituted for a left side of formula (16), a right side of formula (16) is made to be a ratio of simple integers by satisfying formula (11) and the materials M1 and M2 to be the candidates are discriminated to be suitable as materials which constitute the diffraction grating DG when formula (17) is satisfied. Thus, the materials M1 and M2 capable of forming the diffraction grating DG as to be specified designed can be easily selected. COPYRIGHT: (C)2008,JPO&INPIT

Abstract translation: 要解决的问题：为了容易地设计具有令人满意的特性的衍射元件。 解决方案：设定将不衍射波长λ和待衍射波长λ的衍射光栅DG分别设计为设计目标时，将材料M1和M2的折射率n的值作为每个波长的候选值 λ代入式（16）的左侧，通过满足公式（11）将公式（16）的右侧作为简单整数的比例，并将作为候选的材料M1和M2区分为 适合作为满足式（17）时构成衍射光栅DG的材料。 因此，可以容易地选择能够形成要设计的衍射光栅DG的材料M1和M2。 版权所有（C）2008，JPO＆INPIT

公开(公告)号：JP2007273012A

公开(公告)日：2007-10-18

申请号：JP2006098706

申请日：2006-03-31

Applicant: Sony Corp ,  ソニー株式会社

Inventor： KAWAKITA SATOSHI ,  AIBA MOTOO ,  SUGANO TAKASHI ,  SATO HITOSHI ,  YAMADA TAKATOSHI

IPC: G11B7/135 ,  G02B5/18

CPC classification number: G11B7/1374 ,  G02B5/1895 ,  G11B7/1353 ,  G11B2007/0006

Abstract: PROBLEM TO BE SOLVED: To hardly change a diffraction efficiency EF regardless of usage temperature. SOLUTION: In the diffraction element, which is composed of a base layer 20C having a diffraction pattern PTc for a CD and a cover layer 20D covering the base layer 20C, a cover material RA and a base material RB are selected so that a change amount of the refractive index nA of the cover material RA and a change amount of the refractive index nB of the base material RB when temperature is changed from -40[°C] to 75[°C] are nearly equal to each other. COPYRIGHT: (C)2008,JPO&INPIT

Abstract translation: 要解决的问题：不管使用温度如何，几乎不改变衍射效率EF。 解决方案：在由具有CD的衍射图案PTc和覆盖基底层20C的覆盖层20D的基底层20C构成的衍射元件中，选择覆盖材料RA和基材RB，使得 覆盖材料RA的折射率nA的变化量和当温度从-40 [℃]变化到75℃时基材RB的折射率nB的变化量几乎相等 。 版权所有（C）2008，JPO＆INPIT