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48 条记录 (耗时 0.025 秒)

    Variable-focal length lens
    1.
    发明授权
    Variable-focal length lens 有权
    可变焦距镜头

    公开(公告)号：US08014061B2

    公开(公告)日：2011-09-06

    申请号：US12808105

    申请日：2008-12-26

    申请人： Tadayuki Imai ,  Masahiro Sasaura ,  Jun Miyazu ,  Shogo Yagi ,  Kazuo Fujiura

    发明人： Tadayuki Imai ,  Masahiro Sasaura ,  Jun Miyazu ,  Shogo Yagi ,  Kazuo Fujiura

    IPC分类号： G02F1/29

    CPC分类号： G02F1/29 ,  G02F1/0316 ,  G02F2001/294 ,  G02F2201/128

    摘要： To provide a variable-focal length lens capable of altering its focal length at high speed. The variable-focal length lens has an electrooptic material and electrodes formed on an incident surface of light and on an exit surface of the light of the electrooptic material. An optical axis is set so that the light is inputted into a gap where the electrodes of the incident surface are not formed and is outputted from a gap where the electrodes of the exit surface are not formed. A focus of the light that is transmitted through the electrooptic material becomes variable by varying an applied voltage between the electrodes of the incident surface and the electrodes of the exit surface.

    摘要翻译： 提供能够高速改变其焦距的可变焦距透镜。 可变焦距透镜具有电光材料和形成在光的入射表面上的电极和电光材料的光的出射表面。 光轴被设定为使得光入射到没有形成入射表面的电极的间隙，并且从未形成出射表面的电极的间隙输出光轴。 通过电光材料透射的光的焦点通过改变入射表面的电极和出射表面的电极之间的施加电压而变得可变。

    VARIABLE-FOCAL LENGTH LENS
    2.
    发明申请
    VARIABLE-FOCAL LENGTH LENS 有权
    变焦镜头长度镜头

    公开(公告)号：US20100290104A1

    公开(公告)日：2010-11-18

    申请号：US12808105

    申请日：2008-12-26

    申请人： Tadayuki Imai ,  Masahiro Sasaura ,  Jun Miyazu ,  Shogo Yagi ,  Kazuo Fujiura

    发明人： Tadayuki Imai ,  Masahiro Sasaura ,  Jun Miyazu ,  Shogo Yagi ,  Kazuo Fujiura

    IPC分类号： G02F1/29

    CPC分类号： G02F1/29 ,  G02F1/0316 ,  G02F2001/294 ,  G02F2201/128

    摘要： To provide a variable-focal length lens capable of altering its focal length at high speed. The variable-focal length lens has an electrooptic material and electrodes formed on an incident surface of light and on an exit surface of the light of the electrooptic material. An optical axis is set so that the light is inputted into a gap where the electrodes of the incident surface are not formed and is outputted from a gap where the electrodes of the exit surface are not formed. A focus of the light that is transmitted through the electrooptic material becomes variable by varying an applied voltage between the electrodes of the incident surface and the electrodes of the exit surface.

    摘要翻译： 提供能够高速改变其焦距的可变焦距透镜。 可变焦距透镜具有电光材料和形成在光的入射表面上的电极和电光材料的光的出射表面。 光轴被设定为使得光入射到没有形成入射表面的电极的间隙，并且从未形成出射表面的电极的间隙输出光轴。 通过电光材料透射的光的焦点通过改变入射表面的电极和出射表面的电极之间的施加电压而变得可变。

    Wavelength converter
    4.
    发明授权
    Wavelength converter 失效
    波长转换器

    公开(公告)号：US06795232B2

    公开(公告)日：2004-09-21

    申请号：US10108996

    申请日：2002-03-29

    申请人： Kazuo Fujiura ,  Shogo Yagi ,  Tadayuki Imai ,  Koji Enbutsu ,  Masahiro Sasaura ,  Takashi Kurihara ,  Makoto Abe ,  Seiji Toyoda ,  Eishi Kubota

    发明人： Kazuo Fujiura ,  Shogo Yagi ,  Tadayuki Imai ,  Koji Enbutsu ,  Masahiro Sasaura ,  Takashi Kurihara ,  Makoto Abe ,  Seiji Toyoda ,  Eishi Kubota

    IPC分类号： G02F135

    CPC分类号： G02F1/3534 ,  G02F1/3551 ,  G02F2001/3548

    摘要： A wavelength converter implements high speed, high efficiency, low noise wavelength conversion without performing high voltage poling of a crystal, and enables switching and modulation of converted light in response to an electric field. A KLTN crystal, includes a deposited-gold electrode within its incidence plane, and is connected to a DC power supply via a copper wire. The crystal material is composed of KTa1-xNbxO3 and/or K1-yLiyTa1-xNbxO3. A polarizer controls the polarization of the fundamental wave in the direction parallel to the electric field, and launches it into the electrode of the KLTN crystal. The KLTN crystal, rotating on an axis in the direction of the electric field, launches only part of the generated SHG light with the same polarization direction as that of the incident light into a photo multiplier tube through a polarizer.

    摘要翻译： 波长转换器实现高速，高效率，低噪声波长转换，而不执行晶体的高电压极化，并且能够响应于电场而转换和调制转换的光。 KLTN晶体在其入射平面内包括沉积金电极，并通过铜线连接到直流电源。 晶体材料由KTa1-xNbxO3和/或K1-yLiyTa1-xNbxO3组成。 偏振器在平行于电场的方向上控制基波的偏振，并将其发射到KLTN晶体的电极中。 沿电场方向在轴上旋转的KLTN晶体仅通过偏振器将仅一部分产生的SHG光与入射光的偏振方向相同地发射到光电倍增管中。

    Optical waveguide material and optical waveguide
    10.
    发明授权
    Optical waveguide material and optical waveguide 有权
    光波导材料和光波导

    公开(公告)号：US07177514B2

    公开(公告)日：2007-02-13

    申请号：US10534635

    申请日：2004-07-16

    申请人： Tadayuki Imai ,  Kazuo Fujiura ,  Makoto Shimokozono ,  Seiji Toyoda ,  Masahiro Sasaura ,  Tohru Matsuura

    发明人： Tadayuki Imai ,  Kazuo Fujiura ,  Makoto Shimokozono ,  Seiji Toyoda ,  Masahiro Sasaura ,  Tohru Matsuura

    IPC分类号： G02B6/10 ,  C30B29/30

    CPC分类号： C30B29/30 ,  G02B2006/121 ,  G02F1/035 ,  Y10S117/918

    摘要： The invention provides an optical waveguide material whose refractive index can be tailored without changing the ratio of Ta and Nb. An optical waveguide of this invention comprising an under-clad layer 1 and a core 2 that is formed on the under-clad layer 1 and has a higher refractive index than that of the under-clad layer 1 is shown. For example, KTN (KTa1−xNbxO3) is used as the core 2, and a material that is obtained by substituting at least one element selected from the group consisting of Zr, Hf, and Sn for a portion of one element of the constituent elements of KTN and has the same perovskite type crystal structure as KTN is used as the clad. The refractive index of KTN can be reduced considerably, and this controllability widens the degree of freedom in the design of optical waveguide devices.

    摘要翻译： 本发明提供一种光波导材料，其折射率可以在不改变Ta和Nb的比例的情况下进行调整。 示出了本发明的光波导，其包括形成在下包层1上并且具有比下包层1的折射率更高的折射率的下包层1和芯2。 例如，使用KTN（KTa 1-x Nb x O O 3）作为芯2，并且使用通过取代 使用选自KTN的构成元素的一个元素的一部分的Zr，Hf和Sn中的至少一种元素，并且具有与KTN相同的钙钛矿型晶体结构作为包层。 KTN的折射率可以大大降低，这种可控性扩大了光波导器件的设计自由度。