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1. 发明申请

US20080279060A1 OBJECTIVE LENS DEVICE, OPTICAL PICKUP DEVICE, OPTICAL-DISC DRIVING DEVICE AND DRIVING METHOD OF OBJECTIVE LENS 失效
标题翻译：目标镜头装置，光学拾取装置，光盘驱动装置和目标镜头的驱动方法
公开(公告)号：US20080279060A1
公开(公告)日：2008-11-13
申请号：US11871420
申请日：2007-10-12
申请人： Noriaki NISHI , Kenji Yamamoto , Takahiro Miyagi , Fumiaki Nakano
发明人： Noriaki NISHI , Kenji Yamamoto , Takahiro Miyagi , Fumiaki Nakano
IPC分类号： G11B7/00 , G02B7/14
CPC分类号： G02B7/023 , G02B7/021 , G11B7/0933 , G11B7/0935 , G11B7/121 , G11B7/123 , G11B7/1275 , G11B7/1374 , G11B7/22 , G11B2007/0006
摘要： An objective lens device includes: a first objective lens having a first numerical aperture, which can condense light into a disc-shaped first optical recording medium including a first cover layer of first thickness; a second objective lens having a second numerical aperture which is smaller than the first numerical aperture, which can condense light into a disc-shaped second optical recording medium including a second cover layer of second thickness which is thicker than the first thickness; a third objective lens having a third numerical aperture which is smaller than the second numerical aperture, which can condense light into a disc-shaped third optical recording medium including a third cover layer of third thickness which is thicker than the second thickness; and a lens holder configured to integrally hold the first, second, and third objective lenses.
摘要翻译：一种物镜装置，包括：具有第一数值孔径的第一物镜，其可以将光冷凝成包括第一厚度的第一覆盖层的盘状第一光学记录介质; 具有小于第一数值孔径的第二数值孔径的第二物镜，其可以将光冷凝成包括比第一厚度厚的第二厚度的第二覆盖层的盘形第二光学记录介质; 具有小于第二数值孔径的第三数值孔径的第三物镜，其可以将光冷凝成包括第三厚度比第二厚度厚的第三覆盖层的盘状第三光学记录介质; 以及透镜保持器，其构造成一体地保持第一，第二和第三物镜。

2. 发明申请

US20070280083A1 RECORDING AND PLAYBACK APPARATUS AND OPTICAL HEAD 失效
标题翻译：录音和播放设备和光学头
公开(公告)号：US20070280083A1
公开(公告)日：2007-12-06
申请号：US11751062
申请日：2007-05-21
申请人： Noriaki NISHI , Hiroaki Mizuma , Motoi Kimura , Kenji Yamamoto , Masatoshi Nishino
发明人： Noriaki NISHI , Hiroaki Mizuma , Motoi Kimura , Kenji Yamamoto , Masatoshi Nishino
IPC分类号： G11B7/00
CPC分类号： G11B7/1263 , G11B7/128 , G11B7/1356 , G11B7/1369 , G11B7/1381
摘要： The light intensity of a light beam emitted from a light source is appropriately controlled when the light beam is transmitted through a variable optical coupling efficiency device in an optical head. During a read mode, the light beam from the light source is incident on an optical disk at an intensity relatively weaker than that of the light source. By switching the optical coupling efficiency of the variable optical coupling efficiency device between a write mode and a read mode, the light intensity directed to an optical recording medium is substantially varied from the write mode to the read mode. This arrangement eliminates the need for substantially increasing the optical output power ratio of the light source of write power to read power.
摘要翻译：当光束通过光学头中的可变光耦合效率器件传输时，适当地控制从光源发射的光束的光强度。在读取模式期间，来自光源的光束以比光源弱的强度入射到光盘上。通过在写入模式和读取模式之间切换可变光耦合效率器件的光耦合效率，指向光学记录介质的光强度从写入模式到读取模式基本上是变化的。这种布置消除了对读取功率的写入功率的光源的光输出功率比实质上增加的需要。

3. 发明申请

US20070127337A1 OPTICAL RECORDING MEDUIM DRIVING DEVICE 失效
标题翻译：光学记录媒体驱动设备
公开(公告)号：US20070127337A1
公开(公告)日：2007-06-07
申请号：US11674007
申请日：2007-02-12
申请人： Noriaki NISHI , Kenji Yamamoto
发明人： Noriaki NISHI , Kenji Yamamoto
IPC分类号： G11B7/00
CPC分类号： G11B7/1353 , G11B7/0079 , G11B7/1263 , G11B7/1356 , G11B7/1365 , G11B7/1369 , G11B7/1395 , G11B19/12 , G11B2007/0006 , G11B2007/0013 , G11B2007/13727
摘要： A method and an apparatus for driving an optical recording medium for recording and/or reproducing various information for the optical recording medium, in which the output power ratio of the light source may be reduced for recording and reproduction, for optical recording media of different sorts, or for respective recording surfaces of a multilayered optical recording medium, so that optimum characteristics may be realized even with use of an easy-to-fabricate light source or a light source with a smaller light output rating. The intensity of a light beam emitted on an optical recording medium 102 by an optical head 104 is controlled by optical coupling efficiency varying elements 214, 215 depending on the sort of the optical recording medium 102, recording surfaces of a multi-layered optical recording medium, recording surfaces in the multi-layered optical recording medium or on the operating modes, in such a manner that the intensity of the light beam emitted on the optical recording medium 102 may be significantly varied without drastically increasing the output power ratio on the side light source 212.
摘要翻译：一种用于记录和/或再现用于记录和/或再现光记录介质的各种信息的光记录介质的方法和装置，其中光源的输出功率比可以减少用于记录和再现，用于不同种类的光记录介质或者对于多层光学记录介质的各个记录表面，即使使用易于制造的光源或具有较小的光输出等级的光源，也可以实现最佳特性。通过光学头104在光学记录介质102上发射的光束的强度由光学耦合效率变化元件214,215控制，这取决于光学记录介质102的种类，多层光学记录介质的记录表面在多层光学记录介质中或在操作模式下记录表面，使得在光学记录介质102上发射的光束的强度可以显着变化，而不会显着增加侧光上的输出功率比来源212。

4. 发明申请

US20100014410A1 OPTICAL PICKUP AND OPTICAL DISK DEVICE 失效
标题翻译：光学拾取和光盘设备
公开(公告)号：US20100014410A1
公开(公告)日：2010-01-21
申请号：US12501834
申请日：2009-07-13
申请人： Takashi NAKAO , Fumiaki NAKANO , Noriaki NISHI , Nobuhiko ANDO , Hiroaki NAKAGAWA , Yutaka TENTAKU
发明人： Takashi NAKAO , Fumiaki NAKANO , Noriaki NISHI , Nobuhiko ANDO , Hiroaki NAKAGAWA , Yutaka TENTAKU
IPC分类号： G11B7/00
CPC分类号： G11B7/1381 , G11B7/0903 , G11B7/131 , G11B7/1353 , G11B2007/0006 , G11B2007/0013
摘要： An optical pickup includes: a light source that emits a light beam; an object lens that condenses the light beam on a target recording layer of an optical disk; a lens moving unit; a condensing lens; a hologram element that diffracts, in diffracting a reflected light beam and separating it into reflected zeroth-order and first-order light beams, parts of the reflected first-order light beam in a first direction and sets them as first and second beams, diffracts parts of the reflected first-order light beam in a second direction and sets them as third and fourth beams; and a photodetector that receives the first and second beams and the third and fourth beams and generates light reception signals, and receives interlayer stray light of a part of the light beam reflected by the other recording layers other than the target recording layer and generates a stray light reception signal.
摘要翻译：光拾取器包括：发射光束的光源; 将光束聚光在光盘的目标记录层上的物镜; 透镜移动单元; 聚光透镜; 衍射衍射反射光束并将其分离成反射的零级和一级光束的全息元件，将反射的一级光束的第一方向的部分设置为第一和第二光束，衍射反射的一级光束的一部分在第二方向上并将其设置为第三和第四光束; 以及光电检测器，其接收第一和第二光束以及第三和第四光束并产生光接收信号，并且接收由目标记录层以外的其它记录层反射的部分光束的层间杂散光，并产生杂散光接收信号。

5. 发明申请

US20070230295A1 ABERRATION CORRECTING ELEMENT IN THE OPTICAL HEAD OF A RECORDING AND REPRODUCTION SYSTEM 失效
标题翻译：在记录和再现系统的光学头中校正元素
公开(公告)号：US20070230295A1
公开(公告)日：2007-10-04
申请号：US11760326
申请日：2007-06-08
申请人： Noriaki NISHI
发明人： Noriaki NISHI
IPC分类号： G11B7/00
CPC分类号： G11B7/13925 , G02B27/0068 , G02B27/58 , G02F1/134309 , G02F2203/18 , G11B7/1369 , G11B7/13927 , G11B2007/0013
摘要： Even in the case where there is used technique such as “high NA”, “multi-layer recording”, etc., in order to carry out optimum correction of wave front aberration produced thereby with a simple technique, such an aberration correcting element to vary variable A and variable B (A≠B) of phase distribution formula A(−r4)−B(−r2) as phase correction pattern by aberration correcting element is realized by using a liquid crystal element (30). The liquid crystal element (30) forms such an electrode pattern to generate phase distribution corresponding to spherical aberration at one transparent electrode (31A), and forms such an electrode pattern to generate defocus pattern at the other transparent electrode (31B). In addition, by controlling applied voltages with respect to these electrodes, it becomes possible to independently carry out variable control of the above-described variables A and B.
摘要翻译：即使在使用诸如“高NA”，“多层记录”等技术的情况下，为了通过简单的技术进行由此产生的波前像差的最佳校正，这样的像差校正元件通过像差校正将相位分布公式A（-rH4）-B（-r2）的变量A和变量B（A

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