公开(公告)号：US5050970A

公开(公告)日：1991-09-24

申请号：US285217

申请日：1988-12-16

申请人： Shigeo Kittaka

发明人： Shigeo Kittaka

IPC分类号： G02B3/00 ,  G02B13/24

CPC分类号： G02B13/24 ,  G02B3/00

摘要： A two-group two-element lens system for use in an optical information device includes a first lens adapted to be positioned closer to a light source and having a flat surface which is symmetric with respect to an optical axis thereof and a convex surface which is symmetric with respect to the optical axis, the first lens being made of a medium having a refractive index distribution along the optical axis, and a second lens adapted to be positioned closer to an image and having a spherically convex surface closer to the light source, the second lens having a positive refracting power as a whole and made of a medium having a uniform refractive index.

摘要翻译： 用于光学信息装置的两组双元件透镜系统包括：适于定位成靠近光源并且具有相对于其光轴对称的平坦表面的第一透镜和 所述第一透镜由具有沿着所述光轴的折射率分布的介质构成，所述第二透镜适于被定位成更靠近图像并且具有靠近所述光源的球面凸面， 第二透镜作为整体具有正折射率并且由具有均匀折射率的介质制成。

公开(公告)号：US20060078263A1

公开(公告)日：2006-04-13

申请号：US10547535

申请日：2004-03-04

申请人： Shigeo Kittaka ,  Kazuaki Oya ,  Masatoshi Nara ,  Takahiro Asai

发明人： Shigeo Kittaka ,  Kazuaki Oya ,  Masatoshi Nara ,  Takahiro Asai

IPC分类号： G02B6/10

CPC分类号： G02B6/1225 ,  B82Y20/00

摘要： In a waveguide element using a photonic crystal including a core formed of a photonic crystal having a refractive index periodicity in at least two directions perpendicular to a propagation direction of an electromagnetic wave and a cladding arranged in contact with the core in order to confine the electromagnetic wave in the core, an incident side phase modulation portion is provided for allowing an electromagnetic wave that is coupled to a band on or near a Brillouin zone boundary in a photonic band structure in the core and propagates in the core to enter the core.

摘要翻译： 在使用光子晶体的波导元件中，所述光子晶体包括由垂直于电磁波的传播方向的至少两个方向的折射率周期性的光子晶体形成的核和与芯接触的包层，以限制电磁 提供入射侧相位调制部分，用于允许耦合到核心中的光子带结构中的布里渊区边界上或附近的带的电磁波，并且在核心中传播以进入核心。

公开(公告)号：US06429977B2

公开(公告)日：2002-08-06

申请号：US09745079

申请日：2000-12-20

申请人： Shigeo Kittaka

发明人： Shigeo Kittaka

IPC分类号： G02B300

CPC分类号： G02B3/0037 ,  G02B3/0087 ,  H04N1/0311 ,  H04N1/0312

摘要： A high performance optical imaging system can be provided by minimizing the overlapping degree m, increasing the quantity of light of the rod lens array and improving the resolving power while taking into account the irregularity of the quantity of light when a dislocation between a sensor and an optical axis of an entire rod lens array occurs. In the optical imaging system, a plurality of rod lenses with a refractive index distribution in the radial direction are arranged in two rows in a rod lens array with their optical axes in parallel to each other. This optical imaging system focuses light from a manuscript plane onto an image plane, the planes being arranged on the two sides of the rod lens array. The overlapping degree m defined as the following equation (Eq. 10) is in a range of 0.91≦m≦1.01; m=X0/2R   (Eq. 10) wherein X0 denotes an image radius that the rod lenses project onto the image plane and 2R denotes a distance between the optical axes of neighboring rod lenses.

摘要翻译： 可以通过使重叠度m最小化，增加棒状透镜阵列的光量并提高分辨能力，同时考虑到当传感器和传感器之间的位错时考虑到光量的不规则性，可以提供高性能光学成像系统 发生整个棒状透镜阵列的光轴。 在光学成像系统中，在棒状透镜阵列中以径向分布折射率分布的多个棒状透镜彼此平行地布置成两列。 该光学成像系统将来自原稿平面的光聚焦到图像平面上，该平面布置在棒状透镜阵列的两侧。 定义为以下等式（等式10）的重叠度m在0.91 <= m <= 1.01的范围内;其中X0表示棒透镜投影到图像平面上的图像半径，2R表示光学 相邻棒状透镜的轴。

公开(公告)号：US6078431A

公开(公告)日：2000-06-20

申请号：US264491

申请日：1999-03-08

申请人： Shigeo Kittaka ,  Koji Kakimoto ,  Hiroshi Koshi

发明人： Shigeo Kittaka ,  Koji Kakimoto ,  Hiroshi Koshi

IPC分类号： G02B13/00 ,  G02B3/00 ,  G02B9/00 ,  G02B3/02

CPC分类号： G02B3/0087

摘要： A rod lens made of a transparent cylindrical medium having a refractive index distribution in the radial direction is used as a graded index lens. An object surface and an image surface are arranged on both sides of the rod lens. A first surface of the lens is a convex spherical surface, and a second surface of the lens is a planar surface, and the lens is arranged so that the convex spherical surface faces the object surface, and the planar surface faces an image surface. The equations1.0.ltoreq.R/r.sub.0 .ltoreq.1.6, andR/f.ltoreq.1.2are satisfied, wherein r.sub.0 is a radius of a portion of the rod lens that operates as a lens, measured from an optical axis of the lens, R is a curvature radius of the convex spherical surface, and f is a focal length of the rod lens. Thus, an object lens system with a large NA, that is smaller and lighter, while keeping the number of parts to a minimum, can be provided.

摘要翻译： 作为渐变折射率透镜使用由具有径向折射率分布的透明圆筒状介质构成的棒状透镜。 物镜表面和图像表面布置在棒状透镜的两侧。 透镜的第一表面是凸形球面，透镜的第二表面是平面，并且透镜被布置为使得凸形球形表面面向物体表面，并且平面表面面对图像表面。 满足公式1.0

公开(公告)号：US5978146A

公开(公告)日：1999-11-02

申请号：US124074

申请日：1998-07-29

申请人： Shigeo Kittaka ,  Kiyosumi Fujii

发明人： Shigeo Kittaka ,  Kiyosumi Fujii

IPC分类号： G02B13/26 ,  G02B3/00 ,  G02B27/18

CPC分类号： G02B3/0087 ,  G02B3/005

摘要： In a rod lens array in which a plurality of rod lenses each having a refractive-index distribution in the radial direction are arranged in one row such that the optical axes are parallel to each other, and in a life-size imaging optical apparatus using the rod lens array, the outside diameter of each rod lens is such that 0.05 mm.ltoreq.R.ltoreq.0.25 mm and 0.5R.ltoreq.r.sub.0 .ltoreq.1.0R (2R: the distance between the optical axes of adjacent rod lenses and r.sub.0 : the radius of the effective area of each rod lens that provides a lens action) and the degree of overlap m defined by m=x.sub.0 /2R is such that 1.61.ltoreq.m.ltoreq.1.80 or 2.06.ltoreq.m.ltoreq.2.50 where X.sub.0 is the view radius of a single rod lens which is given by X.sub.0 =-r.sub.0 /cos(Z.sub.0 .pi./P).

摘要翻译： 在棒状透镜阵列中，其中在径向上具有折射率分布的多个棒状透镜被布置成一行，使得光轴彼此平行，并且在使用 棒状透镜阵列，每个棒状透镜的外径使得0.05mm

公开(公告)号：US5959783A

公开(公告)日：1999-09-28

申请号：US95566

申请日：1998-06-11

申请人： Shigeo Kittaka ,  Kiyosumi Fujii

发明人： Shigeo Kittaka ,  Kiyosumi Fujii

IPC分类号： G02B3/00 ,  G02B6/18

CPC分类号： G02B3/0056 ,  G02B3/0012 ,  G02B3/0087

摘要： In a rod lens array in which a plurality of rod lenses each having a refractive-index distribution in the radial direction are arranged in two rows such that the optical axis for one row is parallel to that for the other row, and in a life-size imaging optical apparatus using the rod lens array, the outside diameter of each rod lens is such that 0.05 mm.ltoreq.R.ltoreq.0.25 mm and 0.5R.ltoreq.r.sub.0 .ltoreq.1.0R (2R: the distance between the optical axes of adjacent rod lenses and r.sub.0 : the radius of the effective area of each rod lens that provides a lens action) and the degree of overlap m defined by m=X.sub.0 /2R is such that 1.46.ltoreq.m.ltoreq.1.64 (where X.sub.0 is the view radius of a single rod lens which is given by X.sub.0 =-r.sub.0 /cos(Z.sub.0 .pi./P).

摘要翻译： 在棒状透镜阵列中，在径向方向上具有折射率分布的多个棒状透镜配置成两行，使得一行的光轴平行于另一列的光轴， 使用棒状透镜阵列的尺寸成像光学装置，每个棒状透镜的外径使得0.05mm

公开(公告)号：US20100022379A1

公开(公告)日：2010-01-28

申请号：US12525212

申请日：2008-01-31

申请人： Shigeo Kittaka ,  Masahiro Tsuda ,  Kentei Yono ,  Atsunobu Masuno ,  Yasutomo Arai

发明人： Shigeo Kittaka ,  Masahiro Tsuda ,  Kentei Yono ,  Atsunobu Masuno ,  Yasutomo Arai

IPC分类号： C03C4/12 ,  C03C3/12 ,  F21V9/16 ,  H01S3/17

CPC分类号： H01S3/16 ,  C03C3/127 ,  C03C4/12 ,  G02F1/37 ,  H01S3/1603 ,  H01S3/2308

摘要： An optical element of the present invention exhibits at least one of an upconversion emission characteristic and a light amplifying characteristic when irradiated with an excitation light. The optical element includes a bulk glass that contains titanium oxide as a main component, and the glass further contains a rare earth element. As the rare earth element, at least one element of Er and Yb, or a combination of Yb and Tm preferably is used, for example.

摘要翻译： 当用激发光照射时，本发明的光学元件显示出上转换发射特性和光放大特性中的至少一个。 光学元件包括以氧化钛为主要成分的块状玻璃，玻璃还含有稀土元素。 作为稀土元素，例如使用Er和Yb的至少一种元素，或Yb和Tm的组合。