公开(公告)号：US09335557B2

公开(公告)日：2016-05-10

申请号：US13213169

申请日：2011-08-19

申请人： Hidemi Takayama

发明人： Hidemi Takayama

IPC分类号： G02B5/18 ,  G02B13/02 ,  G02B27/42 ,  G02B27/00

CPC分类号： G02B27/4288 ,  G02B5/1842 ,  G02B5/1871 ,  G02B13/02 ,  G02B27/0037 ,  G02B27/4211

摘要： A diffractive optical element in which the maximum optical path length of light is an integral multiple of each of a plurality of wavelengths includes a diffractive grating configured by combining a first member and a second member having a refractive index lower than a refractive index of the first member and having dispersion higher than a dispersion of the first member. At least one of the first member and the second member is made of a glass material, and the diffractive grating is formed by the glass material which is heated to be softened using a thermal press forming, and has a concave grating shape that has a grating height increasing from a central part toward a peripheral part.

摘要翻译： 其中光的最大光程长度为多个波长中的每一个的整数倍的衍射光学元件包括衍射光栅，其通过组合第一部件和折射率低于第一部件的折射率的第二部件 并且具有高于第一部件的分散体的分散体。 第一构件和第二构件中的至少一个由玻璃材料制成，并且衍射光栅由通过热压成型加热而被软化的玻璃材料形成，并且具有凹形光栅形状，其具有光栅 高度从中心部分向周边部分增加。

公开(公告)号：US20150253570A1

公开(公告)日：2015-09-10

申请号：US14429782

申请日：2013-09-18

申请人： TEKNOLOGIAN TUTKIMUSKESKUS VTT

发明人： Antti Sunnari ,  Olli-Heikki Huttunen ,  Juuso Olkkonen

IPC分类号： G02B27/01 ,  G02B27/42

CPC分类号： G02B27/0101 ,  G02B5/1809 ,  G02B5/1823 ,  G02B6/0016 ,  G02B6/0026 ,  G02B6/0035 ,  G02B27/0172 ,  G02B27/4211 ,  G02B27/4272 ,  G02B27/4288 ,  G02B2027/0112

摘要： The invention relates to optical devices comprising a transparent substrate and a first transparent grating layer on the substrate, the grating layer comprising periodically alternating zones having different refractive indices. According to the invention, the device comprises a second transparent grating layer located on top of the first grating layer and also comprising periodically alternating zones having different refractive indices so that the zones of the first grating layer having higher refractive index are at least partly aligned with the zones of the second grating layer having lower refractive index and vice versa, the second grating layer reducing the amount of light diffracted to non-zero transmission orders. The invention allows for reducing the so-called rainbow effect for example in head-up displays (HUDs).

摘要翻译： 本发明涉及包括透明衬底和衬底上的第一透明光栅层的光学器件，光栅层包括周期性地具有不同折射率的交替区域。 根据本发明，该器件包括位于第一光栅层顶部的第二透明光栅层，并且还包括具有不同折射率的周期性交替区域，使得具有较高折射率的第一光栅层的区域至少部分地与 所述第二光栅层的区域具有较低折射率，反之亦然，所述第二光栅层将光量衍射减少到非零传输次数。 本发明允许例如在平视显示器（HUD）中减少所谓的彩虹效果。

公开(公告)号：US20110157701A1

公开(公告)日：2011-06-30

申请号：US12979421

申请日：2010-12-28

申请人： Kazuhiro YAMADA ,  Yasuhiro Tanaka

发明人： Kazuhiro YAMADA ,  Yasuhiro Tanaka

IPC分类号： G02B5/18

CPC分类号： G02B27/4288 ,  G02B5/1866 ,  G02B5/1895 ,  G02B27/4205

摘要： In a diffractive optical element, a first optical member and a second optical member are stacked, and a diffraction grating is formed at an interface between the first and second optical members. The diffractive optical element is configured so that the followings fall within a predetermined range: an inter-material gradient which is a ratio of an amount of change in reference refractive indexes between the first optical member and the second optical member, to an amount of change in principal dispersions between the first optical member and the second optical member; and a blaze wavelength of the diffraction grating.

摘要翻译： 在衍射光学元件中，堆叠第一光学构件和第二光学构件，并且在第一和第二光学构件之间的界面处形成衍射光栅。 衍射光学元件被配置为使得以下内容落在预定范围内：作为第一光学构件和第二光学构件之间的参考折射率的变化量的比率的变化量与变化量之间的材料间梯度 在第一光学构件和第二光学构件之间的主要分散体中; 和衍射光栅的火焰波长。

公开(公告)号：US20050270958A1

公开(公告)日：2005-12-08

申请号：US11109735

申请日：2005-04-20

申请人： Kiyono Ikenaka

发明人： Kiyono Ikenaka

IPC分类号： G02B3/10 ,  G02B5/18 ,  G02B13/14 ,  G02B13/18 ,  G02B27/00 ,  G11B7/00 ,  G11B7/135 ,  G11B7/1353 ,  G11B7/1374 ,  G11B7/1392

CPC分类号： G11B7/1353 ,  G02B13/146 ,  G02B27/0037 ,  G02B27/4283 ,  G02B27/4288 ,  G11B7/1374 ,  G11B7/13922 ,  G11B2007/0006

摘要： The present invention includes relates to an objective lens used for reproducing and/or recording of information for at least two types of optical discs including high density discs, and has excellent wavelength characteristics, temperature characteristics and tracking characteristics and to provide an optical pickup apparatus employing this objective lens. An objective lens according to the present invention is used for an optical pickup apparatus at least reproducing and/or recording information for a first optical disc having a protective substrate with a thickness t1 and a second optical disc having a protective substrate with a thickness t2 (0.8×t1≦t2). Each of the light fluxes with a wavelength λ1 and a wavelength λ2 enters into the objective lens and a diffractive structure is formed on the at least one optical surface of the objective lens, signs and values of an optical system magnification of the objective lens m1 and m2 for the light fluxes with wavelength λ1 and λ2 respectively are different each other, and the diffractive structure has a positive diffractive action.

摘要翻译： 本发明涉及用于再现和/或记录包括高密度盘的至少两种类型的光盘的信息的物镜，并且具有优异的波长特性，温度特性和跟踪特性，并且提供一种使用 这个物镜。 根据本发明的物镜用于光学拾取装置，至少再现和/或记录具有厚度为t1的保护衬底的第一光盘和具有厚度为t2的保护衬底的第二光盘的信息（ 0.8xt1 <= t2）。 具有波长λ1和波长λ2的每个光束进入物镜，并且在物镜的至少一个光学表面上形成衍射结构，物镜的光学系统放大率的符号和值以及 波长λ1和λ2的光通量的m2分别相差不大，衍射结构具有正衍射作用。

公开(公告)号：US06741402B2

公开(公告)日：2004-05-25

申请号：US09973114

申请日：2001-10-10

申请人： Shuichi Takeuchi ,  Koichi Maruyama

发明人： Shuichi Takeuchi ,  Koichi Maruyama

IPC分类号： G02B308

CPC分类号： G02B27/4283 ,  G02B7/028 ,  G02B27/0037 ,  G02B27/4288 ,  G11B7/1353 ,  G11B7/1374 ,  G11B7/13922 ,  G11B2007/0006

摘要： A single element objective lens for an optical disc drive converges a laser beam, which is emitted by a laser source, on a data recording surface of an optical disc through a protective layer of the optical disc. One surface of the objective lens is divided into a central area including an optical axis thereof and a peripheral area surrounding the central area. The peripheral area is provided with a diffraction lens structure formed by a plurality of concentric annular zones including minute steps. The central area is a continuous surface having no stepped portions. The diffraction lens structure compensates for variation of converging characteristic of the objective lens due to a change of a temperature.

摘要翻译： 用于光盘驱动器的单个元件物镜将由激光源发射的激光束通过光盘的保护层会聚在光盘的数据记录表面上。 物镜的一个表面被分成包括其光轴的中心区域和围绕中心区域的周边区域。 周边区域设置有由包括微小步骤的多个同心环形区域形成的衍射透镜结构。 中心区域是没有阶梯部分的连续表面。 衍射透镜结构由于温度的变化而补偿物镜的会聚特性的变化。

公开(公告)号：US06728042B2

公开(公告)日：2004-04-27

申请号：US10126783

申请日：2002-04-22

申请人： Kohei Ota ,  Norikazu Arai

发明人： Kohei Ota ,  Norikazu Arai

IPC分类号： G11B7135

CPC分类号： G11B7/13922 ,  G02B27/0037 ,  G02B27/4238 ,  G02B27/4288 ,  G11B7/127 ,  G11B7/1353 ,  G11B7/1374 ,  G11B2007/0006

摘要： An optical pickup apparatus comprises two light sources having two wavelengths (&lgr;1

摘要翻译： 光拾取装置包括具有两个波长（λ1

公开(公告)号：US20030197941A1

公开(公告)日：2003-10-23

申请号：US10410346

申请日：2003-04-10

申请人： CANON KABUSHIKI KAISHA

发明人： Masanobu Ohgane

IPC分类号： G02B005/18 ,  G02B027/42

CPC分类号： G02B27/0037 ,  C08F271/00 ,  C08F271/02 ,  C08L51/003 ,  G02B1/04 ,  G02B5/1823 ,  G02B5/1852 ,  G02B27/4211 ,  G02B27/4222 ,  G02B27/4277 ,  G02B27/4288 ,  C08L51/06

摘要： An optical element having a diffraction shape uses an optical material comprising at least N-vinylcarbazole, polyvinylcarbazole, and the light polymerization initiator. By using such optical material, it is possible to suppress crystallization of the optical material during molding even at room temperature and appropriately control the dropping amount suited for replica molding. It is possible to provide the optical material also suited for replica molding at room temperature by setting a ratio of N-vinylcarbazole to polyvinylcarbazole, i.e. N-vinylcarbazole/polyvinylcarbazole, to a range between 90/10 and 70/30.

摘要翻译： 具有衍射形状的光学元件使用至少包含N-乙烯基咔唑，聚乙烯基咔唑和光聚合引发剂的光学材料。 通过使用这种光学材料，即使在室温下也可以抑制成型时的光学材料的结晶化，适当地控制适合于复制成型的滴下量。 通过将N-乙烯基咔唑与聚乙烯基咔唑（即N-乙烯基咔唑/聚乙烯基咔唑）的比率设定在90/10〜70/30的范围内，也可以在室温下提供也适于复制成型的光学材料。

公开(公告)号：US06449094B1

公开(公告)日：2002-09-10

申请号：US08638759

申请日：1996-04-29

申请人： Tetsuya Ishii

发明人： Tetsuya Ishii

IPC分类号： G02B2744

CPC分类号： G02B27/4211 ,  G02B27/4288

摘要： An optical system including a diffraction optical element and for forming an image of an object by light having a given wavelength width includes at least one diffraction optical element and a diffraction light selection element for transmitting a diffraction light of given order to an output side of the diffraction optical element and for attenuating the diffraction light of orders other than the given order.

摘要翻译： 包括衍射光学元件和用于通过具有给定波长宽度的光形成物体的图像的光学系统包括至少一个衍射光学元件和衍射光选择元件，用于将给定顺序的衍射光传输到所述衍射光学元件的输出侧 衍射光学元件，并用于衰减除给定顺序以外的次序的衍射光。

公开(公告)号：US20020041451A1

公开(公告)日：2002-04-11

申请号：US09851937

申请日：2001-05-10

发明人： Akira Harada

IPC分类号： G02B015/14 ,  G02B013/02 ,  G02B009/00 ,  G02B009/08

CPC分类号： G02B27/4211 ,  G02B5/1895 ,  G02B9/08 ,  G02B13/003 ,  G02B13/0045 ,  G02B13/0055 ,  G02B13/006 ,  G02B27/42 ,  G02B27/4288

摘要： A lens system has a plurality of lenses, a stop, and a diffractive surface, the entire lens system moves during focusing, and the lens system satisfies the condition of nullnull0.5, where null is a maximum photographic magnification.

摘要翻译： 透镜系统具有多个透镜，光阑和衍射面，整个透镜系统在聚焦期间移动，并且透镜系统满足β> 0.5的条件，其中β是最大摄影倍率。

公开(公告)号：US06185043B2

公开(公告)日：2001-02-06

申请号：US09159224

申请日：1998-09-23

申请人： Ayami Imamura

发明人： Ayami Imamura

IPC分类号： G02B2710

CPC分类号： G02B27/0018 ,  G02B1/105 ,  G02B1/14 ,  G02B5/1823 ,  G02B5/1876 ,  G02B27/0037 ,  G02B27/4205 ,  G02B27/4211 ,  G02B27/4288

摘要： An optical system capable of preventing degradation of the image quality and minimizing the effect of unwanted-order light even when a protective layer is provided on a diffraction surface, thereby obtaining an image of high quality. The optical system, on which band light is incident, has a relief type diffractive optical element (2), and a device (3) that limits a wavelength band of light entering or emerging from the diffractive optical element (2). The diffractive optical element (2) has an optical member (4) having a relief configuration on a surface thereof, and a protective layer (5) formed over the surface of the optical member (4) from a material different from a material constituting the optical member (4).

摘要翻译： 即使在衍射面上设置有保护层的情况下，也能够防止图像质量的劣化并使不期望的光的影响最小化的光学系统，从而获得高质量的图像。 带式光入射的光学系统具有浮雕型衍射光学元件（2）和限制从衍射光学元件（2）进入或出射的光的波长带的装置（3）。 衍射光学元件（2）具有在其表面上具有凹凸构造的光学构件（4），以及由与构成光学构件的材料不同的材料形成在光学构件（4）的表面上的保护层（5） 光学构件（4）。