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    Optical imaging system
    2.
    发明授权
    Optical imaging system 有权
    光学成像系统

    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）

    Object lens system
    3.
    发明授权
    Object lens system 失效
    物镜系统

    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

    Optical imaging system with rod lens array
    4.
    发明授权
    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.

    Waveguide Element, Method for Producing the Waveguide Element, and Optical Sensor
    5.
    发明申请
    Waveguide Element, Method for Producing the Waveguide Element, and Optical Sensor 失效
    波导元件，波导元件生产方法和光学传感器

    公开(公告)号：US20080304787A1

    公开(公告)日：2008-12-11

    申请号：US11792904

    申请日：2006-01-12

    申请人： Shigeo Kittaka ,  Masatoshi Nara ,  Keiji Tsunetomo

    发明人： Shigeo Kittaka ,  Masatoshi Nara ,  Keiji Tsunetomo

    IPC分类号： G02B6/028 ,  G02B6/02

    CPC分类号： G02B6/1225 ,  B82Y20/00

    摘要： A waveguide element 21 including a photonic crystal waveguide including a core 4 that is constituted by a photonic crystal having a refractive index periodicity at least in one direction, and that propagates an electromagnetic wave in a direction in which the photonic crystal does not have the refractive index periodicity. At least one of materials forming the core 4 constituted by the photonic crystal, and at least a portion of a cladding in contact with a side face of the core 4 are constituted by a fluid 6. Thus, it is possible to provide a waveguide element that can be used as a light control element, can be produced easily and also can be applied to an optical sensor.

    摘要翻译： 包括光子晶体波导的波导元件21，该光子晶体波导包括由至少在一个方向上具有折射率周期的光子晶体构成的核心4，并且在光子晶体不具有折射率的方向上传播电磁波 指数周期。 形成由光子晶体构成的芯体4的至少一种材料和与芯体4的侧面接触的包层的至少一部分由流体6构成。因此，可以提供波导元件 可以用作光控制元件，可以容易地制造，并且也可以应用于光学传感器。

    Optical waveguide device
    6.
    发明申请
    Optical waveguide device 失效
    光波导器件

    公开(公告)号：US20080107388A1

    公开(公告)日：2008-05-08

    申请号：US12001410

    申请日：2007-12-11

    申请人： Shigeo Kittaka ,  Keiji Tsunetomo

    发明人： Shigeo Kittaka ,  Keiji Tsunetomo

    IPC分类号： G02B6/10

    CPC分类号： G02B6/1225 ,  B82Y20/00 ,  G02B6/12007

    摘要： An optical waveguide device 1a is configured to include a straight waveguide 2a and bottleneck portions 3a provided in two locations in the longitudinal direction of the waveguide 2a. In the optical waveguide device 1a, light confinement is implemented in all surfaces. This permits provision of an optical waveguide device, wherein a reflector or resonator can be provided in a waveguide using a simple configuration.

    摘要翻译： 光波导器件1a被配置为包括设置在波导2a的纵向方向上的两个位置的直线波导2a和瓶颈部分3a。 在光波导器件1a中，在所有表面上实现光限制。 这允许提供光波导器件，其中可以使用简单的构造在波导中提供反射器或谐振器。

    Photonic crystal waveguide, homogeneous medium waveguide, and optical device
    7.
    发明申请
    Photonic crystal waveguide, homogeneous medium waveguide, and optical device 失效
    光子晶体波导，均匀介质波导和光学器件

    公开(公告)号：US20060251368A1

    公开(公告)日：2006-11-09

    申请号：US10565012

    申请日：2004-07-16

    申请人： Shigeo Kittaka ,  Kazuaki Oya ,  Keiji Tsunetomo

    发明人： Shigeo Kittaka ,  Kazuaki Oya ,  Keiji Tsunetomo

    IPC分类号： G02B6/032 ,  G02B6/26

    CPC分类号： G02F1/3136 ,  B82Y20/00 ,  G02B6/1225 ,  G02F2202/32

    摘要： A photonic crystal waveguide and a homogeneous medium waveguide for enabling a steep bend and arrangement at an arbitrary angle with low propagation loss. A photonic crystal waveguide has a core formed by a photonic crystal having periodicity in the Y-direction. Electromagnetic wave is propagated by a band on the Brillouin zone boundary of the photonic band structure of the core. A side face of the core parallel to the Y-direction is in contact with a homogeneous medium having a refractive index of ns, and the condition of λ0/ns>aλ/(λ2/4+a2)0.5 is satisfied when the wavelength in vacuum of the electromagnetic wave is represented by λ0, the period of the photonic crystal is represented by a, and the period in the XZ-plane direction of the wave propagated through the core is represented by λ.

    摘要翻译： 一种光子晶体波导和均匀介质波导，用于以低传播损耗以任意角度进行陡峭的弯曲和布置。 光子晶体波导具有由在Y方向上具有周期性的光子晶体形成的核心。 电磁波由核心的光子带结构的布里渊区边界上的带传播。 平行于Y方向的芯的侧面与折射率为n 的折射率的均匀介质接触，并且λ<0 / 当真空中的波长为λ时，满足λλ/（λ2/4 + a 2） 电磁波由λ表示，光子晶体的周期由a表示，并且通过核传播的波的XZ平面方向上的周期由λ表示。

    Optical element and spectroscopic device using the same
    8.
    发明授权
    Optical element and spectroscopic device using the same 失效
    光学元件和使用其的分光装置

    公开(公告)号：US07009701B2

    公开(公告)日：2006-03-07

    申请号：US10367814

    申请日：2003-02-19

    申请人： Shigeo Kittaka ,  Masatoshi Nara ,  Tatsuhiro Nakazawa ,  Kazuaki Oya ,  Keiji Tsunetomo

    发明人： Shigeo Kittaka ,  Masatoshi Nara ,  Tatsuhiro Nakazawa ,  Kazuaki Oya ,  Keiji Tsunetomo

    IPC分类号： G01J3/28

    CPC分类号： G02B6/29362 ,  B82Y20/00 ,  G02B6/1225

    摘要： An optical element according to the invention constituted by a multilayer structure having a periodic structural portion as at least one region constituted by repetition of a predetermined period, wherein an end surface of the multilayer structure not parallel to layer surfaces of the multilayer structure is used as a light input surface whereas one or each of opposite surfaces of the multilayer structure parallel to the layer surfaces is used as a light output surface. There is an intermediate layer between a medium and a surface of the multilayer structure, the intermediate layer having a refractive index less than the refractive index of the medium. The periodic structural portion of the multilayer structure can be regarded as a one-dimensional photonic crystal. Refracted light from the one-dimensional photonic crystal has good directivity and the direction of the refracted light has strong dependence on wavelength. When this wavelength dependence property is used, a spectroscopic device or a polarized light separating device of high resolution can be achieved without increase in device size.

    摘要翻译： 根据本发明的光学元件由具有周期性结构部分的多层结构构成，所述多层结构具有作为由重复预定周期构成的至少一个区域，其中不与多层结构的层表面平行的多层结构的端面用作 光输入表面，而与层表面平行的多层结构的相对表面中的一个或每个被用作光输出表面。 在多层结构的介质和表面之间存在中间层，中间层的折射率小于介质的折射率。 多层结构的周期性结构部分可以被认为是一维光子晶体。 来自一维光子晶体的折射光具有良好的方向性，并且折射光的方向对波长具有很强的依赖性。 当使用这种波长依赖性时，可以实现高分辨率的分光装置或偏振光分离装置，而不增加装置尺寸。