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1. 发明授权

US07564504B2 Phase plate and an optical data recording/reproducing device 失效
标题翻译：相位板和光学数据记录/再现装置
公开(公告)号：US07564504B2
公开(公告)日：2009-07-21
申请号：US11138954
申请日：2005-05-27
申请人： Yoshiharu Ooi , Ryota Murakami , Hiromasa Sato , Takuji Nomura , Masahiro Murakawa , Yoshiyuki Miyake
发明人： Yoshiharu Ooi , Ryota Murakami , Hiromasa Sato , Takuji Nomura , Masahiro Murakawa , Yoshiyuki Miyake
IPC分类号： G02F1/13 , G02F1/1335 , G02F1/1333
CPC分类号： G11B7/1369 , G02B5/3083 , G02B27/285 , G11B7/0065
摘要： A phase plate having a reduced size and a reduced weight and having accurately parted regions while it has the same function as a conventional two-parted optical rotation plate and an optical data recording/reproducing device capable of stably recording and reproducing are presented. A phase plate P1 comprising a polymer liquid crystal film 2 held between transparent substrates i, 4, wherein the polymer liquid crystal film 2 is parted spatially in the region into which an incident light enters, so that the light transmitting the phase plate assumes a different state of polarization depending on an aligning direction of the molecules of the polymer liquid crystal film 2. The phase plate is located as a two-parted optical rotation plate in an optical data recording/reproducing device.
摘要翻译：具有减小尺寸和减轻重量并具有精确分离区域的相位板，同时具有与常规双分光学旋转板和能够稳定记录和再现的光学数据记录/再现装置相同的功能。夹持在透明基板i，4之间的聚合物液晶膜2的相位板P1，其中聚合物液晶膜2在空间上分散在入射光入射的区域中，使得透射相位板的光呈现不同的状态取决于聚合物液晶膜2的分子的排列方向的偏振状态。相位板被定位为光学数据记录/再现装置中的两分光学旋转板。

2. 发明申请

US20050213212A1 Phase plate and an optical data recording/reproducing device 失效
标题翻译：相位板和光学数据记录/再现装置
公开(公告)号：US20050213212A1
公开(公告)日：2005-09-29
申请号：US11138954
申请日：2005-05-27
申请人： Yoshiharu Ooi , Ryota Murakami , Hiromasa Sato , Takuji Nomura , Masahiro Murakawa , Yoshiyuki Miyake
发明人： Yoshiharu Ooi , Ryota Murakami , Hiromasa Sato , Takuji Nomura , Masahiro Murakawa , Yoshiyuki Miyake
IPC分类号： G02B5/30 , G02B27/28 , G11B7/00 , G11B7/0065 , G11B7/135
CPC分类号： G11B7/1369 , G02B5/3083 , G02B27/285 , G11B7/0065
摘要： A phase plate having a reduced size and a reduced weight and having accurately parted regions while it has the same function as a conventional two-parted optical rotation plate and an optical data recording/reproducing device capable of stably recording and reproducing are presented. A phase plate P1 comprising a polymer liquid crystal film 2 held between transparent substrates 1, 4, wherein the polymer liquid crystal film 2 is parted spatially in the region into which an incident light enters, so that the light transmitting the phase plate assumes a different state of polarization depending on an aligning direction of the molecules of the polymer liquid crystal film 2. The phase plate is located as a two-parted optical rotation plate in an optical data recording/reproducing device.
摘要翻译：具有减小尺寸和减轻重量并具有精确分离区域的相位板，同时具有与常规双分光学旋转板和能够稳定记录和再现的光学数据记录/再现装置相同的功能。夹持在透明基板1,4之间的聚合物液晶膜2的相位板P1，其中聚合物液晶膜2在空间上分散在入射光入射的区域中，使得透射相位板的光呈现不同的状态取决于聚合物液晶膜2的分子的取向方向的极化状态。相位板在光学数据记录/再现装置中被定位为两分光学旋转板。

3. 发明授权

US06891147B2 Wavelength-selective diffraction element and an optical head device 有权
$Wavelength-selective diffraction element and an optical head device$
标题翻译：波长选择性衍射元件和光学头装置
公开(公告)号：US06891147B2
公开(公告)日：2005-05-10
申请号：US10639507
申请日：2003-08-13
申请人： Ryuichiro Goto , Hiroki Hotaka , Yoshiharu Ooi , Reiko Nozawa , Noriaki Shimodaira , Ryota Murakami
发明人： Ryuichiro Goto , Hiroki Hotaka , Yoshiharu Ooi , Reiko Nozawa , Noriaki Shimodaira , Ryota Murakami
IPC分类号： G11B7/1353 , G02B5/18 , G02B5/20 , G02B27/10 , G11B7/00 , G11B7/09 , G11B11/00
CPC分类号： G11B7/1353 , G02B5/1866 , G02B5/203 , G02B27/1006 , G02B27/1086 , G02B27/144 , G02B27/145 , G11B7/127 , G11B2007/0006
摘要： An optical head device having an optical element capable of transmitting without diffracting light having a wavelength emitted from a two-wavelength semiconductor laser and capable of diffracting light having another wavelength, to provide high utilization efficiency of light in a stable manner.For this purpose, a wavelength-selective diffraction element 1A comprising a transparent substrate having a front surface on which a grating having a periodically recessed and projected shape in cross section is formed and a filling member 13A filled in the concavo-convex portion 12A of the grating wherein the concavo-convex portion of the grating is provided with an organic pigment having the absorption edge of light in a region having a shorter wavelength than the wavelength λ1, and the concavo-convex member and the filling member have the same refractive index with respect to either one of light having a wavelength λ1 and light having a wavelength λ2, and they have different refractive indices with respect to the other light having a wavelength, is disposed between the light source and the objective lens of the optical head device.
摘要翻译：一种具有光学元件的光学头装置，其能够在不衍射具有从双波长半导体激光器发射的波长的光并且能够衍射具有另一波长的光的情况下传输，从而以稳定的方式提供高的光的利用效率。为此目的，一种波长选择性衍射元件1A，其包括具有前表面的透明基板，其上形成有横截面为周期性凹凸形状的光栅;填充部件13A，其填充在凹凸部12中 A的光栅，其中光栅的凹凸部分设置有在波长比波长λ1更短的区域中具有光的吸收边的有机颜料，并且凹凸构件和填充构件相对于具有波长λ1的光和具有波长λ2的光的任一个具有相同的折射率，并且它们具有不同的折射率相对于具有波长的其他光，设置在光学头与光学头装置的物镜之间。

4. 发明授权

US07548359B2 Double-wavelength light source unit and optical head device having four diffraction gratings 失效
$Double-wavelength light source unit and optical head device having four diffraction gratings$
标题翻译：双波长光源单元和具有四个衍射光栅的光学头装置
公开(公告)号：US07548359B2
公开(公告)日：2009-06-16
申请号：US11125188
申请日：2005-05-10
申请人： Ryota Murakami , Yoshiharu Ooi
发明人： Ryota Murakami , Yoshiharu Ooi
IPC分类号： G02B5/32 , G11B7/135
CPC分类号： G11B7/1353 , G11B7/123 , G11B7/1275 , G11B2007/0006
摘要： A double-wavelength light source unit capable of stable signal detection, is realized.The double-wavelength light source unit comprises a double-wavelength light source, a photodetector and a double-wavelength diffraction element, wherein the double-wavelength diffraction element comprises a diffraction grating which transmits a light beam of λ1 and diffracts a light beam of λ2 among the light beams of wavelengths λ1 and λ2 (λ1≠λ2) emitted from two laser diode diodes as the double-wavelength light source, a diffraction grating which diffracts a light beam of λ1 and transmits a light beam of λ2, a diffraction grating constituted by a grating-material forming a grating and a filler which transmits a light beam of λ1 since the refractive indices of both of these materials are equal at λ1 and diffracts a light beam of λ2 since the refractive indices are different at λ2, and a diffraction grating which transmits a light beam of λ1 having a first polarization plane and diffracts a light beam of λ1 having a polarization plane perpendicular to the first polarization plane.
摘要翻译：实现了能够稳定地进行信号检测的双波长光源单元。双波长光源单元包括双波长光源，光电检测器和双波长衍射元件，其中双波长衍射元件包括透射λ1的光束并衍射λ2的光束的衍射光栅在从作为双波长光源的两个激光二极管二极管发射的波长λ1和λ2（λ1>λ2）的光束中，衍射λ1的光束并透射λ2的光束的衍射光栅，衍射光栅由形成光栅的光栅材料和透射λ1的光束的填料构成，因为这两种材料的折射率在λ1处相等并衍射λ2的光束，因为折射率在λ2处不同，并且衍射光栅，其透射具有第一偏振面的λ1光束，并衍射具有a的λ1的光束垂直于第一偏振面的偏振平面。

5. 发明申请

US20050213444A1 Double-wavelength light source unit and optical head device 失效
标题翻译：双波长光源单元和光头设备
公开(公告)号：US20050213444A1
公开(公告)日：2005-09-29
申请号：US11125188
申请日：2005-05-10
申请人： Ryota Murakami , Yoshiharu Ooi
发明人： Ryota Murakami , Yoshiharu Ooi
IPC分类号： G11B7/00 , G11B7/12 , G11B7/125 , G11B7/135
CPC分类号： G11B7/1353 , G11B7/123 , G11B7/1275 , G11B2007/0006
摘要： A double-wavelength light source unit capable of stable signal detection, is realized. The double-wavelength light source unit comprises a double-wavelength light source, a photodetector and a double-wavelength diffraction element, wherein the double-wavelength diffraction element comprises a diffraction grating which transmits a light beam of λ1 and diffracts a light beam of λ2 among the light beams of wavelengths λ1 and λ2 (λ1≠λ2) emitted from two laser diode diodes as the double-wavelength light source, a diffraction grating which diffracts a light beam of λ1 and transmits a light beam of λ2, a diffraction grating constituted by a grating-material forming a grating and a filler which transmits a light beam of λ1 since the refractive indices of both of these materials are equal at λ1 and diffracts a light beam of λ2 since the refractive indices are different at λ2, and a diffraction grating which transmits a light beam of λ1 having a first polarization plane and diffracts a light beam of λ1 having a polarization plane perpendicular to the first polarization plane.
摘要翻译：实现了能够稳定地进行信号检测的双波长光源单元。双波长光源单元包括双波长光源，光电检测器和双波长衍射元件，其中双波长衍射元件包括透射λ1的光束的衍射光栅并且在波长λ1和λ2（λ1/2）的光束中衍射λ2的光束从两个激光二极管二极管作为双波长光源发射的衍射光栅，衍射λλ1的光束并透射光束 λ2的衍射光栅，由形成光栅的光栅材料构成的衍射光栅和透射λ1的光束的填料，因为这两种材料的折射率在λ1> 1处相等并且衍射λ2的光束，因为λ2的折射率不同，衍射离子光栅，其透射具有第一偏振面的λ1的光束，并衍射具有垂直于第一偏振面的偏振面的λ1的光束。

6. 发明申请

US20060033913A1 Diffraction element and optical head device 审中-公开
$Diffraction element and optical head device$
标题翻译：衍射元件和光头设备
公开(公告)号：US20060033913A1
公开(公告)日：2006-02-16
申请号：US11256053
申请日：2005-10-24
申请人： Hiromasa Sato , Ryota Murakami
发明人： Hiromasa Sato , Ryota Murakami
IPC分类号： G01J3/28
CPC分类号： G02B5/1861 , G02B5/1814 , G02B27/4238 , G02B27/4294 , G11B7/1353
摘要： Diffraction element and an optical head device each showing little change of diffraction light quantity in response to a change of wavelength to be used, which enables stable signal detection even in a case of recording or reproducing an information from an optical disk, are provided. The diffraction element has a construction that, either one material between a concavo-convex material 102 forming concavo-convex portions of grating and a filling material 103, is made of a material having the absorption edge of light in a wavelength region shorter than the wavelength to be used, and either one of the materials is made of a material having lower refractive index than the material of the other material between the concavo-convex material 102 and the filling material 103 in entire region of wavelength to be used. The element is provided in the optical path between a light source and an objective lens of the optical head device.
摘要翻译：提供了响应于所使用的波长变化而衍射光量变化小的衍射元件和光学头装置，即使在从光盘记录或再现信息的情况下也能够进行稳定的信号检测。衍射元件具有以下结构：在形成光栅的凹凸部的凹凸材料102与填充材料103之间的一种材料由具有比波长短的波长区域的光的吸收边缘的材料制成所使用的材料中的任意一种材料都是由具有低于其它材料的材料的折射率的材料制成的，所述材料的折射率在凹凸材料102和填充材料103之间在整个波长区域内使用。该元件设置在光学头与光学头装置的物镜之间的光路中。

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