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    Optical element and spectroscopic device using the same
    1.
    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。

    Optical element
    2.
    发明授权
    Optical element 失效
    光学元件

    公开(公告)号：US06914715B2

    公开(公告)日：2005-07-05

    申请号：US10375099

    申请日：2003-02-28

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

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

    IPC分类号： G02B6/12 ,  G02B5/18 ,  G02B6/122 ,  G02F1/00 ,  G02B6/10 ,  G02B6/26

    CPC分类号： B82Y20/00 ,  G02B6/1225

    摘要： An optical element according to the invention uses a thin film-like two-dimensional photonic crystal having a structure of periodic repetition in two directions perpendicular to each other. When the two periodic directions are Y-axis and Z-axis directions, opposite surfaces of the photonic crystal structure perpendicular to the Z-axis direction and parallel to the Y-axis direction are used as a light input surface and a light output surface respectively. The direction of movement of light rays incident onto the light input surface is decided so that it is parallel to the YZ plane and inclined at a predetermined inclination angle to the Z-axis direction.

    摘要翻译： 根据本发明的光学元件使用在彼此垂直的两个方向上具有周期性重复的结构的薄膜状二维光子晶体。 当两个周期方向是Y轴和Z轴方向时，垂直于Z轴方向并平行于Y轴方向的光子晶体结构的相对表面分别用作光输入表面和光输出表面 。 决定入射到光输入面上的光线的移动方向，使其平行于YZ平面并以与Z轴方向成预定倾斜角倾斜。

    Photonic crystal optical waveguide
    4.
    发明申请
    Photonic crystal optical waveguide 审中-公开
    光子晶体光波导

    公开(公告)号：US20060140567A1

    公开(公告)日：2006-06-29

    申请号：US10519817

    申请日：2003-07-08

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

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

    IPC分类号： G02B6/10

    CPC分类号： G02B6/1225 ,  B82Y20/00 ,  G02B6/02257 ,  G02B6/02261 ,  G02B6/02285 ,  G02B6/023 ,  G02B6/02357 ,  G02B6/02385

    摘要： A photonic crystal optical waveguide includes a optical waveguide portion having a core made of a photonic crystal with a structure having a periodic refractive index in at least one direction perpendicular to a propagation direction of guided light and having a uniform refractive index in the propagation direction of the guided light, and a cladding arranged in contact with the core, in order to confine the guided light in the core, and an incident-side phase modulation portion arranged in close proximity or in contact with an incident surface of the core.

    摘要翻译： 光子晶体光波导包括光波导部分，该光波导部分具有由光子晶体构成的核心，所述光子晶体具有在垂直于导光的传播方向的至少一个方向上具有周期性折射率的结构，并且在传播方向上具有均匀的折射率 引导光和与芯接触的包层，以便将引导光限制在芯中，以及布置在芯的入射表面附近或接触的入射侧相位调制部分。

    Spectrometer using diffraction grating
    6.
    发明授权
    Spectrometer using diffraction grating 失效
    光谱仪采用衍射光栅

    公开(公告)号：US07170600B2

    公开(公告)日：2007-01-30

    申请号：US10528521

    申请日：2003-09-22

    申请人： Junji Nishii ,  Tatsuhiro Nakazawa ,  Shigeo Kittaka ,  Keiji Tsunetomo ,  Kazuaki Oya

    发明人： Junji Nishii ,  Tatsuhiro Nakazawa ,  Shigeo Kittaka ,  Keiji Tsunetomo ,  Kazuaki Oya

    IPC分类号： G01J3/18 ,  G02B6/34

    CPC分类号： G01J3/1804 ,  G01J3/0208 ,  G01J3/0218 ,  G01J3/18 ,  G01J3/24 ,  G02B5/1866 ,  G02B6/29311

    摘要： A spectrometer using a diffraction grating includes a light-incident portion including an incident-side optical waveguide emitting a light beam that includes a plurality of wavelength components and that approximates a Gaussian beam, and a collimating lens that is arranged on an emission side of the incident-side optical waveguide and that converts the light beam approximating a Gaussian beam that is emitted from the incident-side optical waveguide into a substantially collimated light beam; a diffraction grating having grooves on its surface, on which the light beam that has been converted into the substantially collimated light beam by the collimating lens is incident, the diffraction grating spectrally separating the light beam by emitting light beams whose emission direction depends on their wavelength; and a light-emitting portion having a plurality of focusing lenses that respectively condense the light beams that have been spectrally separated by the diffraction grating.

    摘要翻译： 使用衍射光栅的光谱仪包括光入射部分，其包括发射包括多个波长分量并且近似高斯光束的光束的入射侧光波导，以及配置在该发射侧的发射侧的准直透镜 并且将从入射侧光波导发射的高斯光束近似的光束转换成基本上准直的光束; 衍射光栅在其表面上具有凹槽，其上已经被准直透镜转换成基本上准直的光束的光束入射，衍射光栅通过发射发射方向取决于其波长的光束而光谱地分离光束 ; 以及具有多个聚焦透镜的发光部分，其分别冷凝由衍射光栅分光的光束。

    Spectrometer using diffraction grating
    7.
    发明申请
    Spectrometer using diffraction grating 失效
    光谱仪采用衍射光栅

    公开(公告)号：US20060023212A1

    公开(公告)日：2006-02-02

    申请号：US10528521

    申请日：2003-09-22

    申请人： Junji Nishii ,  Tatsuhiro Nakazawa ,  Shigeo Kittaka ,  Keiji Tsunetomo ,  Kazuaki Oya

    发明人： Junji Nishii ,  Tatsuhiro Nakazawa ,  Shigeo Kittaka ,  Keiji Tsunetomo ,  Kazuaki Oya

    IPC分类号： G01J3/28

    CPC分类号： G01J3/1804 ,  G01J3/0208 ,  G01J3/0218 ,  G01J3/18 ,  G01J3/24 ,  G02B5/1866 ,  G02B6/29311

    摘要： A spectrometer using a diffraction grating includes a light-incident portion including an incident-side optical waveguide emitting a light beam that includes a plurality of wavelength components and that approximates a Gaussian beam, and a collimating lens that is arranged on an emission side of the incident-side optical waveguide and that converts the light beam approximating a Gaussian beam that is emitted from the incident-side optical waveguide into a substantially collimated light beam; a diffraction grating having grooves on its surface, on which the light beam that has been converted into the substantially collimated light beam by the collimating lens is incident, the diffraction grating spectrally separating the light beam by emitting light beams whose emission direction depends on their wavelength; and a light-emitting portion having a plurality of focusing lenses that respectively condense the light beams that have been spectrally separated by the diffraction grating.

    摘要翻译： 使用衍射光栅的光谱仪包括光入射部分，其包括发射包括多个波长分量并且近似高斯光束的光束的入射侧光波导，以及布置在所述发射侧的准直透镜 并且将从入射侧光波导发射的高斯光束近似的光束转换成基本上准直的光束; 衍射光栅在其表面上具有凹槽，其上已经被准直透镜转换成基本上准直的光束的光束入射，衍射光栅通过发射发射方向取决于其波长的光束而光谱地分离光束 ; 以及具有多个聚焦透镜的发光部分，其分别冷凝由衍射光栅分光的光束。

    Optical element using one-dimensional photonic crystal and spectroscopic device using the same
    9.
    发明授权
    Optical element using one-dimensional photonic crystal and spectroscopic device using the same 失效
    使用一维光子晶体的光学元件和使用其的分光装置

    公开(公告)号：US07068903B2

    公开(公告)日：2006-06-27

    申请号：US10438827

    申请日：2003-05-16

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

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

    IPC分类号： G02B6/10

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

    摘要： An optical element, composed of an one-dimensional photonic crystal of a triangular prism shape and a multilayer film and a phase modulation unit are used together, with the phase modulation unit adjacent or abutting to a light input end surface of the optical element. Input light is phase-modulated by the phase modulation unit in the same period and direction as those of photonic crystal so that only specific high-order band light can be propagated through the optical element. When this optical element is formed in an optical waveguide, a small-size spectroscopic device having high resolving power can be provided.

    摘要翻译： 将由三角形棱镜形状的一维光子晶体和多层膜构成的光学元件和相位调制单元一起使用，相位调制单元与光学元件的光输入端面相邻或邻接。 输入光在与光子晶体相同的周期和方向上由相位调制单元进行相位调制，使得只有特定的高阶波段光能够通过光学元件传播。 当该光学元件形成在光波导中时，可以提供具有高分辨能力的小尺寸分光装置。