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41 条记录 (耗时 0.02 秒)

    Polarizing diffraction element and optical head device
    1.
    发明申请
    Polarizing diffraction element and optical head device 失效
    极化衍射元件和光学头装置

    公开(公告)号：US20060239171A1

    公开(公告)日：2006-10-26

    申请号：US11474435

    申请日：2006-06-26

    申请人： Yoshiharu Ooi ,  Hiromasa Sato ,  Tomoki Gunjima

    发明人： Yoshiharu Ooi ,  Hiromasa Sato ,  Tomoki Gunjima

    IPC分类号： G11B7/135

    CPC分类号： G11B7/1353 ,  G02B5/18 ,  G02B5/30 ,  G03H1/0248 ,  G03H2222/31 ,  G11B7/1275

    摘要： A polarizing diffraction element having a wavelength selectivity which functions as a polarizing diffraction element at a wavelength λ1, and which does not function as a diffraction grating not depending on incident polarization state and shows high transmittance at a wavelength λ2, and an optical head device employing the element, are provided. The polarizing diffraction element selectively diffracts or transmits incident light having two different wavelengths each containing a first circularly polarized light and a second circularly polarized light having a rotation opposite from the rotation of the first circularly polarized light, depending on wavelength and polarization state of the incident light. Then, a reflective wavelength region for at least the first circularly incident light, does not contain said two incident wavelengths.

    摘要翻译： 具有波长选择性的偏振衍射元件，该波长选择性用作波长λ1的偏振衍射元件，并且不用作不依赖于入射偏振状态的衍射光栅，并且在波长处表现出高的透射率 λ2＆gt;和采用该元件的光学头装置。 偏振衍射元件选择性地衍射或透射具有两个不同波长的入射光，每个入射光包含第一圆偏振光和具有与第一圆偏振光的旋转相反的旋转的第二圆偏振光，这取决于事件的波长和偏振状态 光。 然后，至少第一圆形入射光的反射波长区域不包含所述两个入射波长。

    Polarizing diffraction element and optical head device
    2.
    发明授权
    Polarizing diffraction element and optical head device 失效
    极化衍射元件和光学头装置

    公开(公告)号：US07738346B2

    公开(公告)日：2010-06-15

    申请号：US11474435

    申请日：2006-06-26

    申请人： Yoshiharu Ooi ,  Hiromasa Sato ,  Tomoki Gunjima

    发明人： Yoshiharu Ooi ,  Hiromasa Sato ,  Tomoki Gunjima

    IPC分类号： G11B7/135

    CPC分类号： G11B7/1353 ,  G02B5/18 ,  G02B5/30 ,  G03H1/0248 ,  G03H2222/31 ,  G11B7/1275

    摘要： A polarizing diffraction element having a wavelength selectivity which functions as a polarizing diffraction element at a wavelength λ1, and which does not function as a diffraction grating not depending on incident polarization state and shows high transmittance at a wavelength λ2, and an optical head device employing the element, are provided.The polarizing diffraction element selectively diffracts or transmits incident light having two different wavelengths each containing a first circularly polarized light and a second circularly polarized light having a rotation opposite from the rotation of the first circularly polarized light, depending on wavelength and polarization state of the incident light. Then, a reflective wavelength region for at least the first circularly incident light, does not contain said two incident wavelengths.

    摘要翻译： 具有波长选择性的偏振衍射元件，该波长选择性用作波长λ1的偏振衍射元件，并且不用作不依赖于入射偏振态的衍射光栅，并且在波长λ2处表现出高的透射率;以及采用 提供了元素。 偏振衍射元件选择性地衍射或透射具有两个不同波长的入射光，每个入射光包含第一圆偏振光和具有与第一圆偏振光的旋转相反的旋转的第二圆偏振光，这取决于事件的波长和偏振状态 光。 然后，至少第一圆形入射光的反射波长区域不包含所述两个入射波长。

    Polymer dispersed liquid crystal color projection display apparatus
    5.
    发明授权
    Polymer dispersed liquid crystal color projection display apparatus 失效
    聚合物分散液晶彩色投影显示装置

    公开(公告)号：US5245449A

    公开(公告)日：1993-09-14

    申请号：US574811

    申请日：1990-08-30

    申请人： Yoshiharu Ooi ,  Tomoki Gunjima

    发明人： Yoshiharu Ooi ,  Tomoki Gunjima

    IPC分类号： H04N9/31

    CPC分类号： H04N9/3105

    摘要： A liquid crystal color projection display apparatus having a projection light source, a plurality of liquid crystal display elements for separately modulating lights of a plurality of colors from the projection light source and an optical projection system for projecting light to a projection screen, wherein a liquid crystal and polymer composite put between a pair of substrates each equipped with an electrode is used as the liquid crystal display element, in which a liquid crystal material is dispersed and held in a polymer matrix and the refractive index of the polymer matrix substantially agrees with the ordinary light refractive index (n.sub.o) of the liquid crystal material used, a dichroic mirror is used for color splitting or color synthesis and the dependence of dichroic mirror's spectral characteristics upon the state of polarization is decreased. Clear color images of high purity and excellent hue can be obtained. Size and the cost of the liquid crystal display apparatus can be reduced.

    Transparent-scattering type optical device including a prism with a triangular longitudinal cross section
    6.
    发明授权
    Transparent-scattering type optical device including a prism with a triangular longitudinal cross section 失效
    透明散射型光学器件，其包括具有三角形纵截面的棱镜

    公开(公告)号：US5206746A

    公开(公告)日：1993-04-27

    申请号：US729499

    申请日：1991-07-12

    申请人： Yoshiharu Ooi ,  Tomoki Gunjima ,  Yoshinori Hirai

    发明人： Yoshiharu Ooi ,  Tomoki Gunjima ,  Yoshinori Hirai

    IPC分类号： G02F1/1334 ,  G02F1/1335 ,  G02F1/137

    CPC分类号： G02F1/133526 ,  G02F1/1334 ,  G02F2001/13756

    摘要： A transparent-scattering type optical device which includes a transparent-scattering type optical element having a layer of transparent-scattering mode optical material whose light scattering characteristics are changed in response to an external input; at least one prism having a bottom surface which is attached to an end portion of the transparent-scattering type optical element, and where the prism has a longitudinal cross section of a shape which is either triangular or triangular with a top portion cut away. A pair of angles formed by two opposite sides of the prism and the bottom surface are between 65.degree. and 90.degree. inclusive where one of the two angles is not equal to 90.degree.. A light absorbing face is formed from an area of the prism surface defined by portions of the two opposite sides of the prism nearest to the top.

    摘要翻译： 一种透明散射型光学器件，其包括透明散射型光学元件，该透明散射型光学元件具有透光散射模式光学材料层，其光散射特性响应于外部输入而改变; 至少一个棱镜，其具有附着到透明散射型光学元件的端部的底面，并且其中所述棱镜具有三角形或三角形形状的纵向截面，顶部被切除。 由棱镜和底面的两个相对侧形成的一对角度在65°和90°之间，其中两个角度之一不等于90°。 从由最靠近顶部的棱镜的两个相对侧的部分限定的棱镜表面的区域形成光吸收面。

    Projection type active matrix polymer dispersed liquid crystal display apparatus with particles of liquid crystal material randomly oriented
    9.
    发明授权
    Projection type active matrix polymer dispersed liquid crystal display apparatus with particles of liquid crystal material randomly oriented 失效
    投影类型活性基质聚合物分散液晶显示装置与液晶材料颗粒随机指向

    公开(公告)号：US5216531A

    公开(公告)日：1993-06-01

    申请号：US748841

    申请日：1991-08-23

    申请人： Yoshinori Hirai ,  Tomoki Gunjima ,  Satoshi Niiyama ,  Yoshiharu Ooi

    发明人： Yoshinori Hirai ,  Tomoki Gunjima ,  Satoshi Niiyama ,  Yoshiharu Ooi

    IPC分类号： G02F1/1334

    CPC分类号： G02F1/1334

    摘要： An active matrix liquid crystal display element comprising an active matrix substrate having an active element for each electrode for picture element, a counter electrode substrate provided with a counter electrode and a liquid crystal polymer composite material in which a nematic liquid crystal having a positive dielectric anisotropy is dispersed and held in a polymer matrix, said liquid crystal polymer composite material being held between the active matrix substrate and the counter electrode substrate wherein the refractive index of the polymer matrix substantially agrees with the ordinary refractive index (n.sub.0) of the liquid crystal used, characterized in that the refractive index anisotropy .DELTA.n of the nematic liquid crystal used is 0.18 or higher, and the average particle diameter R(.mu.m) of the liquid crystal dispersed and held in the polymer matrix, the aspect ratio A in average of liquid crystal particles, and the specific dielectric anisotropy .DELTA..epsilon., the elastic constant K33(10.sup.-12 N) and the viscosity .eta. (cSt) of the liquid crystal satisfy the following relations:3(K33/.eta.).sup.0.5 >R/A>0.7(K33/.DELTA..epsilon.).sup.0.5 (1)and1.3

    Acrylic acid derivative compounds and polymeric liquid crystal obtained by polymerizing the same
    10.
    发明授权
    Acrylic acid derivative compounds and polymeric liquid crystal obtained by polymerizing the same 失效
    丙烯酸衍生物化合物和通过聚合得到的聚合物液晶

    公开(公告)号：US06562259B1

    公开(公告)日：2003-05-13

    申请号：US09720820

    申请日：2001-01-12

    申请人： Tomoki Gunjima ,  Mitsuru Kurosawa ,  Kouichi Murata

    发明人： Tomoki Gunjima ,  Mitsuru Kurosawa ,  Kouichi Murata

    IPC分类号： C09K1912

    CPC分类号： C09K19/2007 ,  C07C69/96 ,  C08F20/30 ,  C09K19/12 ,  C09K19/3852 ,  C09K2019/0448 ,  G02B5/3016

    摘要： The present invention provides a photopolymerizable liquid crystal monomer having high durability, a low melting point and an enantiotropic property. The photopolymerizable liquid crystal monomer is a 4-(4-(alkyloxycarbonyloxy)benzoyloxy)phenyl acrylate represented by the following formula A [wherein Ph is a 1,4-phenylene group, and R is an alkyl group]: CH2═CHCOO—Ph—OCO—Ph—OCOO—R  Formula A Further, the present invention provides a polymer liquid crystal obtained by polymerizing a composition containing the monomer. Further, the present invention provides an optical element employing the polymer liquid crystal, and an optical head employing the optical element as a polarizing hologram element.

    摘要翻译： 本发明提供具有高耐久性，低熔点和对映性的光聚合性液晶单体。光聚合性液晶单体是由下式A表示的4-（4-（4-（烷氧基羰氧基）苯甲酰氧基）苯基丙烯酸酯[其中Ph 是1,4-亚苯基，R是烷基]。此外，本发明提供通过聚合含有单体的组合物获得的聚合物液晶。此外，本发明提供一种使用聚合物液晶的光学元件 以及使用光学元件作为偏光全息元件的光学头。