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81. 发明授权

US5940360A Optical pickup device for reproducing discs of two types with different densities by double beam focuses of different sizes 失效
标题翻译：用于通过不同尺寸的双光束聚焦再现具有不同密度的两种类型的光盘的光学拾取装置
公开(公告)号：US5940360A
公开(公告)日：1999-08-17
申请号：US847475
申请日：1997-04-25
申请人： Yang-Oh Choi
发明人： Yang-Oh Choi
IPC分类号： G11B7/00 , G11B7/12 , G11B7/125 , G11B7/135 , G11B7/20
CPC分类号： G11B7/1353 , G11B7/123 , G11B7/127 , G11B7/1356 , G11B7/1359 , G11B7/139 , G11B2007/0006
摘要： Beams generated from first and second laser light sources are reflected by a beam splitter to proceed toward an optical disc. The laser beams focus onto the optical disc via a selective light-transmitting part installed in front of the optical disc and an objective lens. The selective light-transmitting part is formed by an inner circular part for transmitting only the laser beam of first wavelength and a peripheral part for transmitting only the laser beam of second wavelength. The beam having transmitted through the inner circular part forms the larger beam spot on the disc while that having transmitted through the peripheral part forms the smaller beam spot, so that double beam focuses of different sizes can be formed by a single optical pickup device.
摘要翻译：从第一和第二激光源产生的光束被分束器反射以朝向光盘。激光束经由安装在光盘前面的选择性透光部分和物镜聚焦在光盘上。选择性透光部由仅用于透射第一波长的激光的内圆周部分和仅透射第二波长的激光的外围部分形成。已经透过内圆形部分的光束在光盘上形成较大的光束点，而透射通过周边部分的光束形成较小的光束点，使得可以通过单个光学拾取装置形成不同尺寸的双光束聚焦。

82. 发明授权

US5920537A Correction element of lower light intensity around an optical axis of an optical head with a plurality of focal points 失效
标题翻译：具有多个焦点的光学头的光轴周围的较低光强度的校正元件
公开(公告)号：US5920537A
公开(公告)日：1999-07-06
申请号：US13183
申请日：1998-01-26
申请人： Yoshiaki Komma , Sadao Mizuno , Hideki Hayashi , Kenichiro Urairi
发明人： Yoshiaki Komma , Sadao Mizuno , Hideki Hayashi , Kenichiro Urairi
IPC分类号： G11B7/00 , G11B7/135 , G11B7/12
CPC分类号： G11B7/1378 , G11B7/1353 , G11B7/1367 , G11B7/1372 , G11B7/139 , G11B7/1398 , G11B2007/0006
摘要： An optical head apparatus which records or reproduces signals stably on optical disks having different thicknesses. A correction hologram element or a correction filter is provided between a light source and a 2-focus lens in order to decrease optical intensity at a portion distant from the optical axis or to change the optical path length. The light which passes the correction hologram element or a correction filter is converged by the 2-focus lens as a micro-spot on an optical disk. The 2-focus lens comprises a hologram lens which diffracts a part of the light beam and an object lens.
摘要翻译：一种在具有不同厚度的光盘上稳定地记录或再现信号的光学头装置。为了降低远离光轴的部分的光强度，或者改变光路长度，在光源和2焦点透镜之间设置校正全息元件或校正滤光器。通过校正全息元件或校正滤光器的光由作为微点的双焦点透镜会聚在光盘上。双焦点透镜包括衍射光束的一部分和物镜的全息透镜。

83. 发明授权

US5815293A Compound objective lens having two focal points 失效
标题翻译：具有两个焦点的复合物镜，用于与复合物镜会聚光的成像光学系统，用成像光学系统记录或再现信息的光学头装置，具有两种类型的记录的光盘
公开(公告)号：US5815293A
公开(公告)日：1998-09-29
申请号：US455934
申请日：1995-05-31
申请人： Yoshiaki Komma , Sadao Mizuno , Seiji Nishino
发明人： Yoshiaki Komma , Sadao Mizuno , Seiji Nishino
IPC分类号： G02B3/10 , G02B5/18 , G02B5/32 , G02B21/02 , G02B21/18 , G02B21/20 , G03F9/00 , G11B7/00 , G11B7/085 , G11B7/13 , G11B7/135 , G11B19/12 , G02B3/08 , G02B7/00
CPC分类号： G02B5/1895 , G02B21/025 , G02B21/18 , G02B21/20 , G02B27/4238 , G02B3/10 , G02B5/18 , G02B5/1814 , G02B5/1842 , G02B5/1871 , G02B5/1876 , G02B5/32 , G03F9/70 , G03F9/7049 , G03F9/7069 , G03F9/7088 , G11B19/12 , G11B19/127 , G11B7/08511 , G11B7/131 , G11B7/1353 , G11B7/1374 , G11B7/139 , G11B2007/0006 , G11B2007/13727
摘要： A compound objective lens is composed of a hologram lens or transmitting a part of incident light without any diffraction to form a beam of transmitted light and diffracting a remaining part of the incident light to form a beam of first-order diffracted light, and an objective lens for converging the transmitted light to form a first converging spot on a front surface of a thin type of first information medium and converging the diffracted light to form a second converging spot on a front surface of a thick type of second information medium. Because the hologram selectively functions as a concave lens for the diffracted light, a curvature of the transmitted light differs from that of the diffracted light. Therefore, even though the first and second information mediums have different thicknesses, the transmitted light incident on rear surface of the first information medium is converged on the its front surface, and the diffracted light incident on a rear surface of the second information medium is converged on the its front surface. That is, the compound objective lens has two focal points.
摘要翻译：复合物镜由全息透镜构成或透射入射光的一部分而没有任何衍射形成透射光束，衍射入射光的剩余部分以形成一级衍射光束，目标透镜，用于会聚透射光以在薄型第一信息介质的前表面上形成第一会聚点，并且会聚衍射光以在厚型第二信息介质的前表面上形成第二会聚点。由于全息图有选择地用作衍射光的凹透镜，透射光的曲率与衍射光的曲率不同。因此，即使第一信息介质和第二信息介质具有不同的厚度，入射在第一信息介质的后表面上的透射光会聚在其前表面上，并且入射在第二信息介质的后表面上的衍射光会聚在其前面。也就是说，复合物镜具有两个焦点。

84. 发明授权

US5798994A Multi-layered optical disk reading method using liquid crystal diffraction device 失效
$Multi-layered optical disk reading method using liquid crystal diffraction device$
标题翻译：使用液晶衍射装置的多层光盘读取方法
公开(公告)号：US5798994A
公开(公告)日：1998-08-25
申请号：US586185
申请日：1996-01-16
申请人： Yasuo Kamatani
发明人： Yasuo Kamatani
IPC分类号： G11B7/00 , G11B7/085 , G11B7/135
CPC分类号： G11B7/1353 , G11B7/08511 , G11B7/1374 , G11B7/139 , G11B2007/0013
摘要： A multi-layered optical disk reading method which reproduces encoded data from each data layer by focusing a laser beam precisely onto the data layer of the multi-layered optical disk. After a multi-layered optical disk is loaded, a central processing unit (CPU) receives an operator's signal to access a certain data layer. Then the CPU refers to stored data in the CPU's memory for diffraction angle to focus the laser beam onto the certain data layer. The CPU retrieves an operational coded signal, and transmits the signal to a liquid crystal diffraction device to modulate the liquid crystal diffraction device to deflect and focus the laser beam onto the certain data layer. After the liquid crystal diffraction device is modulated by the operational signal from the CPU, the CPU also operates a routing circuit to transmit a read-out signal from a detector which receives a reflected laser beam from the certain data layer, to a selected decoding circuit in a data processor.
摘要翻译：一种多层光盘读取方法，其通过将激光束精确地聚焦到多层光盘的数据层上，再现来自每个数据层的编码数据。在加载多层光盘之后，中央处理单元（CPU）接收操作者的信号以访问某个数据层。然后，CPU将存储的数据存储在CPU的存储器中用于衍射角，以将激光束聚焦到特定数据层上。 CPU检索操作编码信号，并将该信号发送到液晶衍射装置以调制液晶衍射装置，以将激光束偏转并聚焦到特定数据层上。在通过来自CPU的操作信号调制液晶衍射装置之后，CPU还操作路由电路以从接收来自特定数据层的反射激光束的检测器向所选择的解码电路发送读出信号在数据处理器中。

85. 发明授权

US5781329A Electrochromic display device for optical pick up apparatus 失效
标题翻译：用于光学拾取装置的电致变色显示装置
公开(公告)号：US5781329A
公开(公告)日：1998-07-14
申请号：US770273
申请日：1996-12-20
申请人： Man Hyung Lee , Kyung Chan Park , Yoon Kwon Lee , Byung Gil Ryu
发明人： Man Hyung Lee , Kyung Chan Park , Yoon Kwon Lee , Byung Gil Ryu
IPC分类号： G02F1/15 , G02B27/58 , G02F1/157 , G11B7/00 , G11B7/125 , G11B7/135 , G02B1/53
CPC分类号： G11B7/139 , G02B27/58 , G02F1/157 , G11B7/1369 , G11B2007/0006 , G11B7/135
摘要： An electrochromic display device (ECD) for an optical pick-up apparatus which is capable of maximizing a transmissivity of a laser beam by forming a reflection prevention layer on the outer surfaces of transparent substrates, includes first and second transparent substrates formed at both sides of the ECD with a predetermined interval therebetween, first and second transparent electrodes coated on the inner surfaces of the transparent substrates, respectively, an electrochromic layer coated on the inner surface of the second transparent electrode so that colorizing or decolorizing may be carried out reversibly, a counter eletrode layer coated on the inner surface of the first transparent electrode, an electrolytic layer formed between the counter electrode layer and the electrochromic layer, and a reflection prevention layer coated to have more than one layer so as to prevent a beam from being reflected on the outer surfaces of the first and second transparent substrates.
摘要翻译：一种用于光学拾取装置的电致变色显示装置（ECD），其能够通过在透明基板的外表面上形成防反射层来最大化激光束的透射率，包括形成在透明基板的两侧的第一和第二透明基板其间具有预定间隔的ECD，分别涂覆在透明基板的内表面上的第一和第二透明电极，涂覆在第二透明电极的内表面上的电致变色层可以可逆地进行着色或脱色，涂覆在第一透明电极的内表面上的电镀层，形成在对电极层和电致变色层之间的电解质层，以及涂覆有多于一层以防止光束被反射的反射防止层第一和第二透明基板的外表面。

86. 发明授权

US5748603A Optical pickup apparatus for different discs 失效
标题翻译：用于不同光盘的光学拾取装置
公开(公告)号：US5748603A
公开(公告)日：1998-05-05
申请号：US775453
申请日：1996-12-30
申请人： Jin Yong Kim , Seong Yun Jeong
发明人： Jin Yong Kim , Seong Yun Jeong
IPC分类号： G11B7/00 , G11B7/125 , G11B7/135
CPC分类号： G11B7/1369 , G11B7/139 , G11B2007/0006
摘要： An improved optical pickup apparatus for different discs which is capable of writing and reading a data onto discs having different writing densities and thicknesses by using one optical pickup apparatus and a liquid crystal deflector (LCD) or a Grating Polarizing Beam Splitter (GPBS). The apparatus includes an objective lens for focusing a beam onto optical discs each having different thicknesses, and a numerical aperture control means for selectively passing through a beam in accordance with the thickness of the optical discs, diffracting a portion of the beam, and controlling the numerical aperture of the objective lens.
摘要翻译：一种用于不同光盘的改进的光学拾取装置，其能够通过使用一个光学拾取装置和液晶偏转器（LCD）或光栅偏振光束分离器（GPBS）将数据写入和读取具有不同写入密度和厚度的光盘。该装置包括用于将光束聚焦到各自具有不同厚度的光盘上的物镜;以及数值孔径控制装置，用于根据光盘的厚度选择性地穿过光束，衍射光束的一部分，并且控制物镜的数值孔径。

87. 发明授权

US5734637A Optical pickup used with both DVD and CD 失效
公开(公告)号：US5734637A
公开(公告)日：1998-03-31
申请号：US686920
申请日：1996-08-01
申请人： Sakashi Ootaki , Masayuki Iwasaki
发明人： Sakashi Ootaki , Masayuki Iwasaki
IPC分类号： G11B7/00 , G11B7/135
CPC分类号： G11B7/139 , G11B7/1369 , G11B2007/0006
摘要： An optical pickup of a compatible type which can be switched for a DVD and a CD by a completely electrical control without the need of a mechanical moving device or the like and is suitable for the reduction in size and also has an excellent efficiency in the use of light. A liquid crystal panel of a transmission type which gives a phase difference of a 1/4 wavelength or a wavelength that is an odd number multiple of 1/4 wavelength to a transmission light and has a transparent electrode having an aperture pattern of a predetermined shape is used and the liquid crystal panel is arranged so that its plane of polarization crosses a plane of polarization of a polarization beam splitter at a predetermined angle. An applied voltage to the transparent electrode is controlled so that the whole surface of the liquid crystal panel functions as a 1/4 wavelength plate during a reproduction operation or a recording operation of the DVD and only the aperture pattern portion functions as a 1/4 wavelength plate during the reproduction operation of the CD.

88. 发明授权

US09310536B2 Objective lens element 有权
标题翻译：物镜元件
公开(公告)号：US09310536B2
公开(公告)日：2016-04-12
申请号：US13778153
申请日：2013-02-27
申请人： Panasonic Corporation
发明人： Katsuhiko Hayashi , Yasuhiro Tanaka , Michihiro Yamagata , Yoshiaki Komma
IPC分类号： G02B5/18 , G11B7/1353 , G11B7/1374 , G11B7/139 , G11B7/1392 , G11B7/1376 , G11B7/00
CPC分类号： G02B5/1876 , G11B7/1353 , G11B7/1374 , G11B7/1376 , G11B7/139 , G11B7/13922 , G11B2007/0006
摘要： An objective lens element having excellent compatibility with optical discs having different base material thicknesses is provided. The objective lens element has optically functional surfaces on an incident side and an exit side. At least either one of the optically functional surfaces on the incident side and the exit side includes a diffraction portion which satisfies at least either one of the following formulas (1) and (2): θ1×θ2
摘要翻译：提供了具有与具有不同基底材料厚度的光盘的良好兼容性的物镜元件。物镜元件在入射侧和出射侧具有光学功能表面。入射侧和出射侧的光学功能表面中的至少任一方包括满足下述式（1）和（2）中的至少一个的衍射部：＆lt; 1＆gt; 2＆lt; 0（“ ×“表示乘法）（1），（sin＆hetas; 2）/λ2= - （sin＆hetas; 1）/λ1（2），其中θ是具有提供最大值的衍射级的光束的衍射角在波长λ1下的衍射效率和＆amp; Thetas; 2是具有在波长λ2下提供最大衍射效率的衍射级的光束的衍射角。

89. 发明申请

US20130170042A1 OBJECTIVE LENS ELEMENT 审中-公开
标题翻译：目标镜头元件
公开(公告)号：US20130170042A1
公开(公告)日：2013-07-04
申请号：US13778153
申请日：2013-02-27
申请人： Panasonic Corporation
发明人： Katsuhiko HAYASHI , Yasuhiro TANAKA , Michihiro YAMAGATA , Yoshiaki KOMMA
IPC分类号： G02B5/18
CPC分类号： G02B5/1876 , G11B7/1353 , G11B7/1374 , G11B7/1376 , G11B7/139 , G11B7/13922 , G11B2007/0006
摘要： An objective lens element having excellent compatibility with optical discs having different base material thicknesses is provided. The objective lens element has optically functional surfaces on an incident side and an exit side. At least either one of the optically functional surfaces on the incident side and the exit side includes a diffraction portion which satisfies at least either one of the following formulas (1) and (2): θ1×θ2
摘要翻译：提供了具有与具有不同基材厚度的光盘的良好兼容性的物镜元件。物镜元件在入射侧和出射侧具有光学功能表面。入射侧和出射侧的光学功能表面中的至少一个包括满足下述式（1）和（2）中的至少一个的衍射部：θ1×θ2<0（“×”表示乘法）（1），（sinθ2）/λ2= - （sinθ1）/λ1（2），其中θ1是具有在波长λ1处提供最大衍射效率的衍射级的光束的衍射角，θ2是具有在λ2波长处提供最大衍射效率的衍射级的光束的衍射角。

90. 发明授权

US08363533B2 Optical pickup apparatus 失效
标题翻译：光拾取装置
公开(公告)号：US08363533B2
公开(公告)日：2013-01-29
申请号：US13416858
申请日：2012-03-09
申请人： Tohru Hotta , Ryoichi Kawasaki , Kenji Kan , Hiroyuki Shindo
发明人： Tohru Hotta , Ryoichi Kawasaki , Kenji Kan , Hiroyuki Shindo
IPC分类号： G11B7/00 , G02B1/10
CPC分类号： G11B7/1374 , G11B7/139
摘要： An optical pickup apparatus includes an objective lens having a numeric aperture and an incident face. An antireflection coating is formed on the incident face. A collimating lens converts laser light from a laser diode into parallel light, and causes the parallel light to be made incident on the incident face through the antireflection coating. The thickness of the antireflection coating causes a transmittance of laser light that enters the objective lens to be: set at a first predetermined transmittance value, when the numeric aperture is between zero and a first predetermined numeric aperture value; set to correlate linearly with the numeric aperture when the numeric aperture is between the first predetermined numeric aperture value and a second predetermined numeric aperture value; and set at a second predetermined transmittance value, when the numeric aperture is between the second predetermined numeric aperture value and a third predetermined numeric aperture value.
摘要翻译：光学拾取装置包括具有数字孔径和入射面的物镜。在入射面上形成防反射涂层。准直透镜将来自激光二极管的激光转换为平行光，并使平行光通过抗反射涂层入射到入射面上。当数值孔径在零和第一预定数值孔径值之间时，防反射涂层的厚度使进入物镜的激光的透射率设定为第一预定透射率值; 当数值孔径在第一预定数值孔径值和第二预定数值孔径值之间时，被设置为与数字孔径线性相关; 并且当所述数值孔径在所述第二预定数值孔径值和第三预定数值孔径值之间时，设定在第二预定透射率值。

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