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1. 发明授权

US4668055A Lens for an optical recording/reproducing apparatus and optical recording/reproducing apparatus using same 失效
标题翻译：用于光学记录/再现装置的透镜和使用其的光学记录/再现装置
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。

2. 发明授权

US4744620A Optical coupler 失效
标题翻译：光耦合器
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

3. 发明授权

US4668053A Collimator lens 失效
标题翻译：准直镜
公开(公告)号：US4668053A
公开(公告)日：1987-05-26
申请号：US726627
申请日：1985-04-24
申请人： Hisami Nishi , Minoru Toyama
发明人： Hisami Nishi , Minoru Toyama
IPC分类号： G02B3/00 , G02B9/02
CPC分类号： G02B3/0087
摘要： A collimator lens of graded index type for a semiconductor laser which can be manufactured at low cost and has the residual wavefront aberration equal to or less than that of a conventional collimator lens of spherical lens system is provided by comprising a rod lens of graded index type made of a cylindrical transparent medium having the refractive index n(r) at position of radial distance r from the central axis represented 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 satisfying following conditions:(1) r.sub.1 =.infin.;(2) r.sub.2 =.infin.;(3) 6.70 mm.ltoreq.Z+fB.ltoreq.7.30 mm;(4) 1.60.ltoreq.n.sub.0 .ltoreq.1.65;(5) 0.18 mm.sup.-1 .ltoreq.g.ltoreq.0.22 mm.sup.-1 ;(6) 0.38 .ltoreq.h.sub.4 .ltoreq.0.87;(7) .vertline.h.sub.6 .vertline.
摘要翻译：一种用于半导体激光器的渐变折射率类型的准直透镜，其可以以低成本制造并且具有等于或小于球面透镜系统的常规准直透镜的残留波前像差的半导体激光器，其包括渐变折射率的棒状透镜由具有折射率n（r）的圆柱形透明介质制成，其位于距离中心轴线的径向距离r的位置处; n2（r）= no2} 1-（gxr）2 + h4（gxr）4 + h6（gxr）6 + h8（gxr）8+。。。 }并满足以下条件：（1）r1 = INFINITY; （2）r2 = INFINITY; （3）6.70mm = Z + fB = 7.30mm; （4）1.60

4. 发明授权

US4643535A Optical information recording/reproducing element 失效
标题翻译：光信息记录/再现元件
公开(公告)号：US4643535A
公开(公告)日：1987-02-17
申请号：US690137
申请日：1985-01-10
申请人： Hiroyuki Ichikawa , Hisami Nishi , Minoru Toyama
发明人： Hiroyuki Ichikawa , Hisami Nishi , Minoru Toyama
IPC分类号： G02B3/00 , G02B9/02 , G02B13/24 , G11B7/085 , G11B7/09 , G11B7/12 , G11B7/135 , G11B7/1374
CPC分类号： G11B7/12 , G02B13/24 , G02B3/0087 , G02B9/02 , G11B7/08547 , G11B7/09 , G11B7/1374
摘要： An element of the invention focuses and projects a parallel or substantially parallel light beam onto an optical information recording medium. The element consists of a transparent columnar body having a convex surface as the input surface and a flat surface as the output surface.
摘要翻译：本发明的元件将平行或基本平行的光束聚焦并投影到光学信息记录介质上。该元件由具有凸面作为输入面的透明柱状体和作为输出面的平面构成。

5. 发明授权

US06597512B2 Rod lens array for line scanning 失效
标题翻译：棒状透镜阵列用于线扫描
公开(公告)号：US06597512B2
公开(公告)日：2003-07-22
申请号：US09960534
申请日：2001-09-21
申请人： Minoru Toyama
发明人： Minoru Toyama
IPC分类号： G02B300
CPC分类号： G02B13/0095 , G02B3/005 , G02B3/0056 , G02B3/0087
摘要： A rod lens array for line scanning is provided that can reduce the degradation of image quality (i.e., vertical stripes (streaks) in the sub-scanning direction of an output image) caused by a periodic irregularity in the light quantity, considering an angular aperture and the positional deviation of an image line in the sub-scanning direction. A rod lens array for one-to-one imaging is used as the rod lens array for line scanning, including a plurality of columnar rod lenses having a refractive index distribution in the radial direction that are arranged in one row in the main scanning direction with their optical axes in parallel. The effective overlapping degree m is in the range defined by (1.55+0.5j)D/d≦m≦(1.80+0.5j)D/d Eq. 37 where d is the lens diameter of the rod lens and D is the array pitch of the rod lenses.
摘要翻译：提供了一种用于线扫描的棒状透镜阵列，其可以考虑到光孔的周期性不规则性，从而可以降低由于光量引起的图像质量（即，输出图像的副扫描方向上的垂直条纹（条纹））的劣化以及图像线在副扫描方向上的位置偏差。使用用于一对一成像的棒状透镜阵列作为用于线扫描的棒状透镜阵列，包括多个在径向方向上具有折射率分布的柱状棒状透镜，其沿主扫描方向排列成一行，它们的光轴平行。有效重叠度m在由d透镜的透镜直径定义的范围内，D是棒状透镜的阵列间距。

6. 发明授权

US4693565A Collimator lens 失效
标题翻译：准直镜
公开(公告)号：US4693565A
公开(公告)日：1987-09-15
申请号：US856822
申请日：1986-04-28
申请人： Hiroyuki Ichikawa , Minoru Toyama
发明人： Hiroyuki Ichikawa , Minoru Toyama
IPC分类号： G02B9/02 , G02B3/00 , G02B3/06 , G02B27/30
CPC分类号： G02B3/00 , G02B3/06
摘要： A collimator lens to be used for an optical recording/reproducing apparatus is constituted by a refractive index distribution type lens to satisfy specific conditions, thereby the invention provides the collimator lens which is good in the productivity and has the wave surface aberration being equivalent to or better than that of a collimator lens using a spherical lens.
摘要翻译：用于光学记录/再现装置的准直透镜由满足特定条件的折射率分布型透镜构成，由此本发明提供了一种准直透镜，该准直透镜具有良好的生产率，波面像差等于或等于优于使用球面透镜的准直透镜。

7. 发明授权

US06856463B2 Image transfer device having laminated lens array sheets 有权
标题翻译：具有层叠透镜阵列片的图像转印装置
公开(公告)号：US06856463B2
公开(公告)日：2005-02-15
申请号：US10208815
申请日：2002-08-01
申请人： Minoru Toyama
发明人： Minoru Toyama
IPC分类号： G02B3/00 , G02B27/10
CPC分类号： G02B3/0068
摘要： An image transfer device having: a lens array laminate 14 forming an erecting unit magnification optical system, the lens array laminate including a plurality of lens array sheets 12 of the same specification each of which has convex-convex lens elements 10 arranged in a plurality of rows and which are substantially closely laminated in a direction of each lens optical axis. Typically, two to four lens array sheets of the same specification each of which has convex-convex lens elements each having are fractive index of not lower than 1.45 and arranged in 3 to 9 rows are closely laminated on each other or one another in a direction of each lens optical axis. Each of the lens array sheets is preferably formed so that the lens thickness is in a range of from about 4 mm to about 0.5 mm and the number of lens rows is in a range of from 4 to 6.
摘要翻译：一种图像传送装置，具有：形成竖立单位倍率光学系统的透镜阵列层叠体14，所述透镜阵列层叠体具有多个相同规格的透镜阵列片12，每个具有凸状透镜要素10，并且其在每个透镜光轴的方向上基本上紧密地层叠。通常，具有相同规格的两至四个透镜阵列片具有凸凸透镜元件，每个凸凸透镜元件具有不低于1.45并且排列成3至9列的折射率指数彼此紧密层叠，的每个透镜光轴。每个透镜阵列片优选地形成为使得透镜厚度在约4mm至约0.5mm的范围内，并且透镜列的数量在4至6的范围内。

8. 发明授权

US07012721B2 Optical imaging system with rod lens array 有权
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.

9. 发明授权

US06469837B2 Imaging optical apparatus 失效
标题翻译：成像光学仪器
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。

10. 发明授权

US06776537B2 Light source-optical fiber coupler 失效
标题翻译：光源光纤耦合器
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。

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