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1. 发明授权

US07782738B2 Phase plate and optical head device 有权
标题翻译：相位板和光头装置
公开(公告)号：US07782738B2
公开(公告)日：2010-08-24
申请号：US11874547
申请日：2007-10-18
申请人： Toshimasa Kakiuchi , Koichi Murata
发明人： Toshimasa Kakiuchi , Koichi Murata
IPC分类号： G11B7/00
CPC分类号： G02B5/3083 , G02B27/288 , G11B7/1353 , G11B7/1367 , G11B7/1381 , G11B2007/0006
摘要： A phase plate and an optical head device are provided, which are capable of suppressing changes of the amount of light incident on a light-receiving unit even if the phase difference caused by transmission through a protective layer of an optical recording medium differs depending on the type of optical recording medium.The phase plate includes a birefringent medium and produces a phase difference in linearly polarized light incident on the phase plate between a polarization component having a polarization direction parallel to the optic axis of the birefringent medium and a polarization component having a polarization direction perpendicular to the optic axis. In the phase plate, the birefringent medium includes a plurality of types of phase areas disposed adjacently; at least two types of adjacent phase areas are different from each other in phase differences, optic axes, or both phase differences and optic axes; and each of the plurality of types of phase areas is disposed so as to have two-fold rotational symmetry with respect to the optical axis of the phase plate.
摘要翻译：提供一种相位板和光学头装置，其能够抑制入射在光接收单元上的光量的变化，即使由于通过光记录介质的保护层的透射引起的相位差根据类型的光记录介质。相位板包括双折射介质，并且在具有平行于双折射介质的光轴的偏振方向的偏振分量和具有垂直于光学元件的偏振方向的偏振分量之间产生入射在相位板上的线偏振光的相位差轴。在相位板中，双折射介质包括相邻设置的多个相位区域; 至少两种类型的相邻区域在相位差，光轴或相位差和光轴两者中彼此不同; 并且多个类型的相位区域中的每一个被设置成相对于相位板的光轴具有双重旋转对称。

2. 发明申请

US20080044125A1 PHASE PLATE AND OPTICAL HEAD DEVICE 有权
标题翻译：相位板和光头设备
公开(公告)号：US20080044125A1
公开(公告)日：2008-02-21
申请号：US11874547
申请日：2007-10-18
申请人： Toshimasa Kakiuchi , Koichi Murata
发明人： Toshimasa Kakiuchi , Koichi Murata
IPC分类号： G02F1/035
CPC分类号： G02B5/3083 , G02B27/288 , G11B7/1353 , G11B7/1367 , G11B7/1381 , G11B2007/0006
摘要： A phase plate and an optical head device are provided, which are capable of suppressing changes of the amount of light incident on a light-receiving unit even if the phase difference caused by transmission through a protective layer of an optical recording medium differs depending on the type of optical recording medium. The phase plate includes a birefringent medium and produces a phase difference in linearly polarized light incident on the phase plate between a polarization component having a polarization direction parallel to the optic axis of the birefringent medium and a polarization component having a polarization direction perpendicular to the optic axis. In the phase plate, the birefringent medium includes a plurality of types of phase areas disposed adjacently; at least two types of adjacent phase areas are different from each other in phase differences, optic axes, or both phase differences and optic axes; and each of the plurality of types of phase areas is disposed so as to have two-fold rotational symmetry with respect to the optical axis of the phase plate.
摘要翻译：提供一种相位板和光学头装置，其能够抑制入射在光接收单元上的光量的变化，即使由于通过光记录介质的保护层的透射引起的相位差根据类型的光记录介质。相位板包括双折射介质，并且在具有平行于双折射介质的光轴的偏振方向的偏振分量和具有垂直于光学元件的偏振方向的偏振分量之间产生入射在相位板上的线偏振光的相位差轴。在相位板中，双折射介质包括相邻设置的多个相位区域; 至少两种类型的相邻区域在相位差，光轴或相位差和光轴两者中彼此不同; 并且多个类型的相位区域中的每一个被设置成相对于相位板的光轴具有双重旋转对称。

3. 发明申请

US20100128593A1 PHASE DIFFERENCE ELEMENT AND OPTICAL HEAD APPARATUS 审中-公开
标题翻译：相差元件和光头设备
公开(公告)号：US20100128593A1
公开(公告)日：2010-05-27
申请号：US12694548
申请日：2010-01-27
申请人： Koichi Murata , Toshimasa Kakiuchi
发明人： Koichi Murata , Toshimasa Kakiuchi
IPC分类号： G11B7/135 , G02B27/28
CPC分类号： G11B7/1369 , G02B5/3083 , G11B7/1365 , G11B2007/0006
摘要： Three phase difference layers having refractive index anisotropy are stacked in parallel and an optic axis angle and retardation of each of the phase difference layers are adjusted and thereby, characteristics having peaks at which ellipticity is approximated to 1 at desired three design wavelengths can be obtained and it can efficiently be adapted to an optical head apparatus for converting linear polarization of a light source with, for example, three different wavelengths into circular polarization.
摘要翻译：具有折射率各向异性的三个相位差层并联堆叠，并且调整每个相位差层的光轴角度和延迟，从而可以获得在期望的三个设计波长处的椭圆率近似为1的具有峰值的特性，它可以有效地适用于将例如三种不同波长的光源的线性偏振转换为圆偏振的光学头装置。

4. 发明授权

US07738344B2 Liquid crystal lens element optical head device 有权
标题翻译：液晶镜头元件光头装置
公开(公告)号：US07738344B2
公开(公告)日：2010-06-15
申请号：US11625005
申请日：2007-01-19
申请人： Yoshiharu Ooi , Takuji Nomura , Toshimasa Kakiuchi , Mitsuo Oosawa , Yuzuru Tanabe
发明人： Yoshiharu Ooi , Takuji Nomura , Toshimasa Kakiuchi , Mitsuo Oosawa , Yuzuru Tanabe
IPC分类号： G11B7/00 , G11B7/135
CPC分类号： G02B3/08 , G02F1/133526 , G02F1/29 , G02F2001/294 , G11B7/1353 , G11B7/1369 , G11B7/1374 , G11B7/13925 , G11B2007/0006 , G11B2007/0013 , G11B2007/13722 , G11B2007/13727
摘要： A liquid crystal lens element is provided, which does not produce change of transmission wavefront regardless of polarization state of incident light when it is off-state at a time of no voltage application, and which exhibits concave lens function for extraordinarily polarized incident light when it is on-state at a time of voltage application.In a liquid crystal lens element 10 comprising a pair of transparent substrates 11 and 12 and a liquid crystal layer 16 sandwiched between the transparent substrates, which is configured to change convergent point of light transmitted through the element according to the magnitude of voltage applied to the liquid crystal layer 16, the liquid crystal lens element 10 further comprises a Fresnel lens 17 having a concave-convex-shaped cross section formed on the transparent substrate 11, a first transparent electrode 13 formed on a flat surface of the transparent substrate 11 on which the Fresnel lens 17 is formed, and a second transparent electrode 14 formed on a flat surface of the other transparent substrate 12.
摘要翻译：提供了一种液晶透镜元件，其在不施加电压时处于断开状态时不会使入射光的偏振状态发生变化，并且当具有非常偏振的入射光时具有凹透镜功能在施加电压时处于导通状态。在包括一对透明基板11和12以及夹在透明基板之间的液晶层16的液晶透镜元件10中，该液晶透镜元件被配置为根据施加到该透明基板的电压的大小来改变透过该元件的光的会聚点液晶透镜元件10还包括形成在透明基板11上的具有凹凸截面的菲涅耳透镜17，形成在透明基板11的平坦表面上的第一透明电极13，形成菲涅耳透镜17，形成在另一透明基板12的平坦表面上的第二透明电极14。

5. 发明授权

US09570490B2 Infrared transmission filter and imaging device 有权
标题翻译：红外线传输滤波器及成像装置
公开(公告)号：US09570490B2
公开(公告)日：2017-02-14
申请号：US13302475
申请日：2011-11-22
申请人： Toshimasa Kakiuchi , Makoto Hasegawa , Masahiro Mori
发明人： Toshimasa Kakiuchi , Makoto Hasegawa , Masahiro Mori
IPC分类号： G02B5/20 , H01L27/146 , G02B5/22
CPC分类号： H01L27/14621 , G02B5/208 , G02B5/22
摘要： There are provided an infrared transmission filter, which is inexpensive, is capable of being sufficiently made lighter and thinner, has no incident angle dependency, and is excellent in permselectivity for infrared light, and an imaging device, which employs such an infrared transmission filter.An infrared transmission filter 10 includes an infrared transmission base material 1 selectively transmitting light in an infrared wavelength range; and a short wavelength side infrared absorbing film 2 formed on one side of the infrared transmission base material 1 and containing a near-infrared absorbent having an optical absorption edge on a short wavelength side of a transmission wavelength band of the infrared transmission base material. An imaging device includes the infrared transmission filter 10.
摘要翻译：红外线透射滤光器10包括红外线透射基材1，其选择性地透射红外波长范围内的光; 以及短波长侧红外线吸收膜2，其形成在红外线透射基材1的一侧，并且在红外线透射基材的透射波长带的短波长侧包含具有光吸收边缘的近红外吸收体。成像装置包括红外线传输滤波器10。

6. 发明申请

US20070127348A1 LIQUID CRYSTAL LENS ELEMENT OPTICAL HEAD DEVICE 有权
标题翻译：液晶镜头元件光学头装置
公开(公告)号：US20070127348A1
公开(公告)日：2007-06-07
申请号：US11625005
申请日：2007-01-19
申请人： Yoshiharu Ooi , Takuji Nomura , Toshimasa Kakiuchi , Mitsuo Oosawa , Yuzuru Tanabe
发明人： Yoshiharu Ooi , Takuji Nomura , Toshimasa Kakiuchi , Mitsuo Oosawa , Yuzuru Tanabe
IPC分类号： G11B7/00
CPC分类号： G02B3/08 , G02F1/133526 , G02F1/29 , G02F2001/294 , G11B7/1353 , G11B7/1369 , G11B7/1374 , G11B7/13925 , G11B2007/0006 , G11B2007/0013 , G11B2007/13722 , G11B2007/13727
摘要： A liquid crystal lens element is provided, which does not produce change of transmission wavefront regardless of polarization state of incident light when it is off-state at a time of no voltage application, and which exhibits concave lens function for extraordinarily polarized incident light when it is on-state at a time of voltage application. In a liquid crystal lens element 10 comprising a pair of transparent substrates 11 and 12 and a liquid crystal layer 16 sandwiched between the transparent substrates, which is configured to change convergent point of light transmitted through the element according to the magnitude of voltage applied to the liquid crystal layer 16, the liquid crystal lens element 10 further comprises a Fresnel lens 17 having a concave-convex-shaped cross section formed on the transparent substrate 11, a first transparent electrode 13 formed on a flat surface of the transparent substrate 11 on which the Fresnel lens 17 is formed, and a second transparent electrode 14 formed on a flat surface of the other transparent substrate 12.
摘要翻译：提供了一种液晶透镜元件，其在无电压施加时处于关闭状态时不会导致透射波前的变化，并且当其在非极性入射光下呈现凹透镜功能时在施加电压时处于导通状态。在包括一对透明基板11和12以及夹在透明基板之间的液晶层16的液晶透镜元件10中，该液晶透镜元件被配置为根据施加到该透明基板的电压的大小来改变透过该元件的光的会聚点液晶透镜元件10还包括形成在透明基板11上的具有凹凸截面的菲涅耳透镜17，形成在透明基板11的平坦表面上的第一透明电极13，形成菲涅耳透镜17，形成在另一透明基板12的平坦表面上的第二透明电极14。

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