公开(公告)号：US07012721B2

公开(公告)日：2006-03-14

申请号：US10068166

申请日：2002-02-06

申请人： Minoru Toyama ,  Shigeo Kittaka

发明人： Minoru Toyama ,  Shigeo Kittaka

IPC分类号： G02B3/00

CPC分类号： G02B3/0087 ,  G02B3/0056

摘要： An optical imaging system is provided that includes a rod lens array and has the optimum refractive index distribution for achieving a high resolving power. The refractive index distribution of rod lenses can be expressed by n(r)2=n02·{1−(g·r)2+h4·(g·r)4+h619 (g·r)6+h8·(g·r)8}Eq. 45 where r is a radial distance from the optical axis of the rod lenses, n0 is a refractive index on the optical axis of the rod lenses, and g, h4, h6 and h8 are refractive index distribution coefficients. The refractive index distribution coefficients h4, h6 and h8 are set on a spheroid in a Cartesian coordinate system with h4 being x-axis, h6 being y-axis and h8 being z-axis. The spheroid is defined by a vector X* that is expressed by X*=(x, y, z)=O*+kAA*+kBB*+kCC*Eq. 46 where O* is a vector from the origin of the Cartesian coordinate system to the center of the spheroid, A*, B* and C* are vectors in the directions of the major axis, the mean axis and the minor axis of the spheroid, respectively, and kA, kB and kC satisfy kA2+kB2+kC2≦1.

公开(公告)号：US06469837B2

公开(公告)日：2002-10-22

申请号：US09755181

申请日：2001-01-08

申请人： Minoru Toyama

发明人： Minoru Toyama

IPC分类号： G02B300

CPC分类号： B41J2/451 ,  H04N1/03

摘要： An imaging optical apparatus comprising a gradient-index rod lens array and two transparent or light transmitting optical elements that are substantially identical in shape and imaging characteristics and which are provided in the object space and the image space in the optical path of said gradient-index rod lens array in such a way that they are symmetrical with respect to said gradient-index rod lens array.

摘要翻译： 一种成像光学装置，包括梯度折射率棒状透镜阵列和两个透明或透光光学元件，其在形状和成像特性上基本相同，并且设置在物体空间中，并且在所述梯度折射率的光路中提供图像空间 棒状透镜阵列，使得它们相对于所述梯度折射率棒状透镜阵列对称。

公开(公告)号：US4668055A

公开(公告)日：1987-05-26

申请号：US800753

申请日：1985-11-22

申请人： Hisami Nishi ,  Minoru Toyama

发明人： Hisami Nishi ,  Minoru Toyama

IPC分类号： G02B9/00 ,  G02B3/00 ,  G02B9/02 ,  G02B13/00 ,  G11B7/085 ,  G11B7/09 ,  G11B7/135 ,  G11B7/1374 ,  G11B7/1392 ,  G02B13/18

CPC分类号： G02B9/02 ,  G02B3/0087 ,  G11B7/1374 ,  G11B7/13922

摘要： In a lens for an optical recording/reproducing apparatus of the invention, a refractive index n(r) at a position of a distance r from an optical axis along a radial direction is given by:n.sup.2 (r)=n.sub.O.sup.2 {1-(g.multidot.r).sup.2 +h.sub.4 (g.multidot.r).sup.4 +h.sub.6 (g.multidot.r).sup.6 +h.sub.8 (g.multidot.r).sup.8 + . . . }and the following conditions are satisfied:R.sub.2 =.infin.3.0.gtoreq.R.sub.1 /(1+0.75S).gtoreq.0.81.40.ltoreq.n.sub.O .ltoreq.1.87-0.6g.multidot.S0.75.gtoreq.g.multidot.f.gtoreq.0.45wheren.sub.O : refractive index on the optical axisg, h.sub.4, h.sub.6, h.sub.8 : coefficientsR.sub.1 : radius of curvature of a first surfaceR.sub.2 : radius of curvature of a second surfaceS: working distancef: focal distance of an overall optical system at an image side.An optical recording/reproducing apparatus of the invention has a lens as described above as an objective lens.

摘要翻译： 在本发明的光记录/再现装置的透镜中，沿着径向与光轴的距离r的折射率n（r）由下式给出：n2（r）= nO2 {1-（ gxr）2 + h4（gxr）4 + h6（gxr）6 + h8（gxr）8+。 。 。 }并且满足以下条件：R2 = INFINITY 3.0> / = R1 /（1 + 0.75S）> / = 0.8 1.40 / = gxf> / = 0.45其中nO ：光轴上的折射率g，h4，h6，h8：系数R1：第一面的曲率半径R2：第二面的曲率半径S：工作距离f：整体光学系统在图像上的焦距 侧。 本发明的光记录/再现装置具有如上所述的作为物镜的透镜。

公开(公告)号：US20070229956A1

公开(公告)日：2007-10-04

申请号：US11692633

申请日：2007-03-28

申请人： HIDESHI SAKAMOTO ,  MINORU TOYAMA ,  YUJI ANDO ,  TAKAHIRO HATTORI

发明人： HIDESHI SAKAMOTO ,  MINORU TOYAMA ,  YUJI ANDO ,  TAKAHIRO HATTORI

IPC分类号： G02B1/10

CPC分类号： G02B5/0808

摘要： Object: To provide a rigid light reflective sheet with excellent light reflecting characteristics, ultraviolet yellowing resistance and dimensional stability.Means to solve: A light reflective sheet wherein the void containing light reflective layer (B) is laid on the light receiving side of a substrate layer (A) composed of a thermoplastic resin composition (a1) containing an inert particle of 5 to 40% in weight, the backing layer (C) is laid on the non-light receiving side of the substrate layer (A), and the void containing light reflective layer (B) is a uniaxially or biaxially stretched sheet with a thickness (tb) of 10 to 90 μm and diffuse reflectance of 70 to 90%.

摘要翻译： 目的：提供具有优异的光反射特性，耐紫外线黄变性和尺寸稳定性的刚性光反射片。 解决方案：一种光反射片，其中含有光反射层（B）的空隙被放置在由含有5至40的惰性颗粒的热塑性树脂组合物（a 1）组成的基底层（A）的光接收侧上 背衬层（C）位于基材层（A）的非光接收侧，含有光反射层（B）的空隙为厚度为（tb）的单轴或双轴拉伸片材， 为10〜90μm，漫反射率为70〜90％。

公开(公告)号：US06776537B2

公开(公告)日：2004-08-17

申请号：US09983395

申请日：2001-10-24

申请人： Minoru Toyama

发明人： Minoru Toyama

IPC分类号： G02B642

CPC分类号： G02B6/4206 ,  G02B6/4292

摘要： A light source-optical fiber coupler using a gradient index rod lens 12 by which a diffused luminous flux emitted from a light source (for example, a semiconductor laser 10) is coupled onto an end surface of an optical fiber (for example, a single-mode optical fiber 14). The gradient index rod lens has a planar end surface facing the light source, and a convex spherical end surface facing the optical fiber. The gradient index rod lens has a light source side numerical aperture NA2 in a range of from 0.40 to 0.75, an effective lens radius r0 in a range of from 0.3 to 1.0 mm, and a spherical curvature radius R1 in a range of from 1.2 to 2.0 mm.

摘要翻译： 使用使用从光源（例如，半导体激光器10）发射的漫射光束的梯度折射率棒状透镜12耦合到光纤的端面上的光源 - 光纤耦合器（例如，单个 模式光纤14）。 梯度折射率棒透镜具有面向光源的平面端面和面向光纤的凸形球形端面。 梯度分度杆透镜的光源侧数值孔径NA2在0.40〜0.75的范围内，有效透镜半径r0在0.3〜1.0mm的范围内，球面曲率半径R1在1.2〜 2.0毫米。

公开(公告)号：US6031668A

公开(公告)日：2000-02-29

申请号：US212076

申请日：1998-12-15

申请人： Minoru Toyama ,  Shigeo Kittaka ,  Atsushi Akiba

发明人： Minoru Toyama ,  Shigeo Kittaka ,  Atsushi Akiba

IPC分类号： G02B3/00 ,  G02B13/00 ,  G02B6/02

CPC分类号： G02B3/0087 ,  G02B13/0095 ,  G02B3/005 ,  G02B3/0056

摘要： An optical imaging system includes a rod lens array, whose individual lenses have a refractive index distribution optimized for high resolving power, which can be expressed byn(r).sup.2 =n.sub.0.sup.2 .multidot.{1-(g.multidot.r).sup.2 +h.sub.4 .multidot.(g.multidot.r).sup.4 +h.sub.6 .multidot.(g.multidot.r).sup.6 }(Eq. 93)wherein r is a radial distance from an optical axis of said rod lenses, n.sub.0 is the refractive index at the optical axis of said rod lenses, and g, h.sub.4 and h.sub.6 are coefficients of the refractive index distribution. The refractive index distribution coefficients h.sub.4 and h.sub.6 are defined, using parameters a, b, c, and d, asc-d.ltoreq.h.sub.4 .ltoreq.c+d (Eq. 94){(h.sub.4 -c)/d}.sup.2 +[{h.sub.6 -(a.multidot.h.sub.4 +b)}/e].sup.2 .ltoreq.1. (Eq. 95)

摘要翻译： 光学成像系统包括棒状透镜阵列，其单独的透镜具有针对高分辨率优化的折射率分布，其可以由n（r）2 = n02x {1-（gxr）2 + h4x（gxr）4 + h6x （gxr）6}（式93）其中r是从所述棒状透镜的光轴的径向距离，n0是所述棒状透镜的光轴处的折射率，g，h4和h6是折射率的系数 指数分布。 使用参数a，b，c和d，定义折射率分布系数h4和h6，（d），（d4） + [{h6-（axh4 + b）} / e] 2 <= 1（式95）

公开(公告)号：US5139557A

公开(公告)日：1992-08-18

申请号：US744830

申请日：1991-08-13

申请人： Shigeo Kittaka ,  Hiroshi Koshi ,  Yoshikazu Kaite ,  Minoru Toyama ,  Noboru Akazawa

发明人： Shigeo Kittaka ,  Hiroshi Koshi ,  Yoshikazu Kaite ,  Minoru Toyama ,  Noboru Akazawa

IPC分类号： C03C21/00

CPC分类号： C03C21/001

摘要： This invention relates to a method of performing an ion exchange of optical glass to produce an axial gradient index material having a good linear distributiion by bringing a glass body containing a monovalent cation component into contact with a medium containing a monovalent cation component and exchanging these cation components under a predetermined condition.

摘要翻译： 本发明涉及一种通过使含有一价阳离子组分的玻璃体与含有一价阳离子组分的介质接触并交换这些阳离子的方法来进行光学玻璃的离子交换以产生具有良好线性分布的轴向梯度折射率材料 组件在预定条件下。

公开(公告)号：US4744620A

公开(公告)日：1988-05-17

申请号：US789780

申请日：1985-10-21

申请人： Hiroshi Ueno ,  Hisami Nishi ,  Minoru Toyama

发明人： Hiroshi Ueno ,  Hisami Nishi ,  Minoru Toyama

IPC分类号： G02B6/32 ,  G02B3/00 ,  G02B6/42 ,  G02B9/02

CPC分类号： G02B6/4206 ,  G02B3/00

摘要： An optical coupler comprises a lens for coupling a light source and an optical fiber wherein the lens comprises a transparent column in which a refractive index n(r) at a distance r from an optical axis is expressed by n.sup.2 (r)=n.sub.0.sup.2 {1-(gr).sup.2 +h.sub.4 (gr).sup.4 +h.sub.6 (gr).sup.6 +h.sub.8 (gr).sup.8 + . . . }, and satisfies the following conditions when Sf=g/0.3:0

摘要翻译： 光耦合器包括用于耦合光源和光纤的透镜，其中透镜包括透明柱，其中与光轴距离r处的折射率n（r）由n2（r）= n02 {1 - （gr）2 + h4（gr）4 + h6（gr）6 + h8（gr）8+。 。 。 }，并且当Sf = g / 0.3:0

公开(公告)号：US06891558B2

公开(公告)日：2005-05-10

申请号：US10236638

申请日：2002-09-06

申请人： Shuya Ogi ,  Tomitaka Takagi ,  Koichiro Iki ,  Minoru Toyama

发明人： Shuya Ogi ,  Tomitaka Takagi ,  Koichiro Iki ,  Minoru Toyama

IPC分类号： B41J2/45 ,  G02B3/00

CPC分类号： G02B3/0087 ,  B41J2/451

摘要： An optical write-in head for obtaining a clear image even in printing at a relatively high recording density without generating strip-like irregularities in most cases. The optical write-in head applies light carrying image information to a photosensitive substance. The optical write-in head includes an array light source having a plurality of dot light sources, each of which selectively emits the light corresponding to the image information, and a lens array facing the array light source. The lens array has a plurality of lens elements which corresponds to the plurality of dot light sources respectively. An angular aperture θ of each of the lens elements is set in a range of about 14° to 18°.

摘要翻译： 一种光学写入头，用于即使在相对高的记录密度下进行打印也可获得清晰的图像，而在大多数情况下不会产生带状的不规则。 光学写入头将光携带图像信息应用于感光物质。 光学写入头包括具有多个点光源的阵列光源，每个点光源选择性地发射对应于图像信息的光以及面向阵列光源的透镜阵列。 透镜阵列具有分别对应于多个点光源的多个透镜元件。 每个透镜元件的角度孔径θ设定在约14°至18°的范围内。

公开(公告)号：US06563104B2

公开(公告)日：2003-05-13

申请号：US09898030

申请日：2001-07-05

申请人： Shuya Ogi ,  Koichiro Iki ,  Minoru Toyama

发明人： Shuya Ogi ,  Koichiro Iki ,  Minoru Toyama

IPC分类号： H01L2700

CPC分类号： H04N1/0311 ,  B41J2/451 ,  G02B3/005 ,  G02B3/0056 ,  G02B3/0087 ,  H04N1/0312 ,  H04N2201/03112 ,  H04N2201/03125 ,  H04N2201/03133 ,  H04N2201/03141 ,  H04N2201/03145

摘要： In an image forming apparatus, an object surface (14) is disposed facing one end face of a rod lens array (10), while an image surface (16) is disposed facing the other end face thereof. A lens working distance of the rod lens array on the object side is substantially equal to that on the image side. An actual object-image distance Tco is set between the conjugate length TC1 at which the average value MTFave of the MTF of the rod lens array in the lens array direction is maximized and the conjugate length TC2 at which the &Dgr;MTF(=(MTFmax−MTFmin)/MTFave) is minimized, and a shift quantity &Dgr;TC(=|TCo−TC1|) is set within 0 mm