公开(公告)号：US20120044462A1

公开(公告)日：2012-02-23

申请号：US13213694

申请日：2011-08-19

申请人： Nobuaki KAJI

发明人： Nobuaki KAJI

IPC分类号： G03B21/14

CPC分类号： G03B21/2053 ,  G03B21/2033 ,  G03B33/08 ,  H04N9/3111 ,  H04N9/3144 ,  H04N9/3173

摘要： An aspect of the present embodiment, there is provided a projector, including a first optical source fixed on a first mount substrate, the first optical source emitting a first light, a second optical source fixed on the first mount substrate being apart from the first optical source for a first distance, the second optical source emitting a second light, a third optical source fixed on a second mount substrate, the third optical source emitting a third light, an emission period of the third light being set between an emission period of the first light and an emission period of the second light.

摘要翻译： 本实施例的一个方面，提供了一种投影仪，包括固定在第一安装基板上的第一光源，发射第一光的第一光源，固定在第一安装基板上的与第一光学元件分离的第二光源 第一光源，第二光源，第二光源，固定在第二安装基板上的第三光源，发射第三光的第三光源，将第三光的发射周期设置在第二光的发射周期之间， 第一光和第二光的发射周期。

公开(公告)号：US07668064B2

公开(公告)日：2010-02-23

申请号：US11344956

申请日：2006-01-31

申请人： Nobuaki Kaji ,  Sumitaka Maruyama ,  Akihito Ogawa ,  Kazuo Watabe

发明人： Nobuaki Kaji ,  Sumitaka Maruyama ,  Akihito Ogawa ,  Kazuo Watabe

IPC分类号： G11B7/00

CPC分类号： G11B7/1353 ,  G11B7/131 ,  G11B2007/0006

摘要： According to one embodiment, an optical pickup unit which can record, reproduction and erase information in/from an information recording medium has tracks with different pitches, the dividing means has at least a part of a dividing boundary line placing between an end of a 1st order diffraction light with the largest diffraction angle and an end of a 1st order diffraction light with the smallest diffraction angle of the reflected laser beam.

摘要翻译： 根据一个实施例，可以在信息记录介质中记录，再现和擦除信息的光学拾取单元具有不同间距的轨道，该分割装置具有至少一部分分割边界线，其位于第一 具有最大衍射角的次级衍射光和具有反射激光束的最小衍射角的1级衍射光的末端。

公开(公告)号：US20080159349A1

公开(公告)日：2008-07-03

申请号：US11964329

申请日：2007-12-26

申请人： Nobuaki Kaji ,  Kazuo Watabe

发明人： Nobuaki Kaji ,  Kazuo Watabe

IPC分类号： H01S5/06 ,  G11B7/00

CPC分类号： G11B7/126 ,  H01S5/06835

摘要： A semiconductor laser driving device includes a current supply unit supplying current to a semiconductor laser; a first control unit controlling the current supply unit to supply a first current which is half or less of a lasing threshold of the semiconductor laser; and a second control unit controlling the current supply unit to supply a second current which is larger than the lasing threshold after a first time is passed from an edge of a clock signal.

摘要翻译： 一种半导体激光器驱动装置，包括向半导体激光器供电的电流源单元; 第一控制单元，控制电流供应单元以提供半导体激光器的激光阈值的一半或更小的第一电流; 以及第二控制单元，其控制电流供应单元，以在从时钟信号的边缘经过第一次之后提供大于激光阈值的第二电流。

公开(公告)号：US20060268669A1

公开(公告)日：2006-11-30

申请号：US11442997

申请日：2006-05-31

申请人： Nobuaki Kaji ,  Sumitaka Maruyama ,  Kazuo Watabe

发明人： Nobuaki Kaji ,  Sumitaka Maruyama ,  Kazuo Watabe

IPC分类号： G11B7/00 ,  G02B27/40

CPC分类号： G11B7/1381 ,  G11B7/0916 ,  G11B7/1275 ,  G11B7/131 ,  G11B7/1353 ,  G11B2007/0006 ,  G11B2007/0013

摘要： An embodiment of the invention is useful for providing an optical pickup unit, which condenses light with different wavelengths at different positions and focal distances, and exactly detects a focus error signal when receiving the reflected light with different wavelengths from two or more kinds of recording medium, in the state that the focal distance of a condensing means is the same as the distance from the recording surface of a recording medium to the condensing means, by dividing light with different wavelengths emitted from light sources and reflected by a recording medium into a predetermined number by a diffraction element, and condensing at a position of a predetermined distance in a predetermined direction.

摘要翻译： 本发明的一个实施例对于提供一种光拾取单元是有用的，该单元在不同位置和焦距下会聚不同波长的光，并且当从两种或多种记录介质接收具有不同波长的反射光时，精确地检测聚焦误差信号 在聚光装置的焦距与从记录介质的记录表面到聚光装置的距离相同的状态下，通过将从光源发射并由记录介质反射的不同波长的光分割成预定的 通过衍射元件的数量，并且在预定方向上的预定距离的位置处聚光。

公开(公告)号：US08077586B2

公开(公告)日：2011-12-13

申请号：US12257213

申请日：2008-10-23

申请人： Kazuo Watabe ,  Takashi Usui ,  Keiichiro Yusu ,  Chosaku Noda ,  Kazuto Kuroda ,  Nobuaki Kaji ,  Masahiro Saito

发明人： Kazuo Watabe ,  Takashi Usui ,  Keiichiro Yusu ,  Chosaku Noda ,  Kazuto Kuroda ,  Nobuaki Kaji ,  Masahiro Saito

IPC分类号： G11B7/00

CPC分类号： G11B7/127 ,  G11B7/0045 ,  G11B7/006

摘要： According to one embodiment, an optical recording head device includes a light source which outputs such a relaxation oscillation optical pulse that a full width at half maximum of a single pulse is 820 ps or less, a driving unit for driving the light source, an objective lens which converges emission light from the light source on a recording layer of a recording medium, and captures reflective light which is reflected by the recording layer of the recording medium, a distribution unit, placed between the light source and the objective lens, for distributing incident light, and a photodetection unit for receiving via the distribution unit the reflective light which is reflected by the recording layer of the recording medium, wherein a resonator length of the light source is 6560 μm or less.

摘要翻译： 根据一个实施例，光记录头装置包括一个光源，其输出这样的弛豫振荡光脉冲，单脉冲的半高全宽为820ps或更小，用于驱动光源的驱动单元， 将来自光源的发射光会聚在记录介质的记录层上并捕获由记录介质的记录层反射的反射光，放置在光源和物镜之间的分配单元，用于分布 以及光检测单元，用于经由分配单元接收由记录介质的记录层反射的反射光，其中光源的谐振器长度为6560μm以下。

公开(公告)号：US20090141615A1

公开(公告)日：2009-06-04

申请号：US12244040

申请日：2008-10-02

申请人： Tsukasa NAKAI ,  Yasuhiro Satoh ,  Nobuaki Kaji ,  Sumio Ashida

发明人： Tsukasa NAKAI ,  Yasuhiro Satoh ,  Nobuaki Kaji ,  Sumio Ashida

IPC分类号： G11B7/00

CPC分类号： G11B7/24085 ,  G11B7/24079

摘要： According to one embodiment, an optical recording medium according to one embodiment of the invention is an optical recording medium to be processed using a light beam having a wavelength λ and a lens having a numerical aperture NA, which includes one of a track and a pit array, and in which a width TP of the track or pit satisfies a condition 0.480≦TP×NA/λ

摘要翻译： 根据一个实施例，根据本发明的一个实施例的光学记录介质是使用具有波长λ的光束和具有数值孔径NA的透镜来处理的光学记录介质，其包括轨道和凹坑之一 阵列，并且其中轨道或凹坑的宽度TP满足条件0.480 <= TPxNA /λ<1.026。

公开(公告)号：US20090103422A1

公开(公告)日：2009-04-23

申请号：US12257213

申请日：2008-10-23

申请人： Kazuo WATABE ,  Takashi USUI ,  Keiichiro YUSU ,  Chosaku NODA ,  Kazuto KURODA ,  Nobuaki KAJI ,  Masahiro SAITO

发明人： Kazuo WATABE ,  Takashi USUI ,  Keiichiro YUSU ,  Chosaku NODA ,  Kazuto KURODA ,  Nobuaki KAJI ,  Masahiro SAITO

IPC分类号： G11B7/135

CPC分类号： G11B7/127 ,  G11B7/0045 ,  G11B7/006

摘要： According to one embodiment, an optical recording head device includes a light source which outputs such a relaxation oscillation optical pulse that a full width at half maximum of a single pulse is 820 ps or less, a driving unit for driving the light source, an objective lens which converges emission light from the light source on a recording layer of a recording medium, and captures reflective light which is reflected by the recording layer of the recording medium, a distribution unit, placed between the light source and the objective lens, for distributing incident light, and a photodetection unit for receiving via the distribution unit the reflective light which is reflected by the recording layer of the recording medium, wherein a resonator length of the light source is 6560 μm or less.

摘要翻译： 根据一个实施例，光记录头装置包括一个光源，其输出这样的弛豫振荡光脉冲，单脉冲的半高全宽为820ps或更小，用于驱动光源的驱动单元， 将来自光源的发射光会聚在记录介质的记录层上并捕获由记录介质的记录层反射的反射光，放置在光源和物镜之间的分配单元，用于分配 以及光电检测单元，用于经由分配单元接收由记录介质的记录层反射的反射光，其中光源的谐振器长度为6560μm或更小。

公开(公告)号：US20080205212A1

公开(公告)日：2008-08-28

申请号：US12039648

申请日：2008-02-28

申请人： Takehiro Hiramatsu ,  Hideaki Ohsawa ,  Kazuo Watabe ,  Chosaku Noda ,  Naoki Morishita ,  Akihito Ogawa ,  Kazuto Kuroda ,  Nobuaki Kaji

发明人： Takehiro Hiramatsu ,  Hideaki Ohsawa ,  Kazuo Watabe ,  Chosaku Noda ,  Naoki Morishita ,  Akihito Ogawa ,  Kazuto Kuroda ,  Nobuaki Kaji

IPC分类号： G11B7/004

CPC分类号： G11B7/1359 ,  G11B7/0908 ,  G11B7/1275 ,  G11B7/131 ,  G11B7/1378 ,  G11B7/1381 ,  G11B7/13922 ,  G11B7/24

摘要： According to one embodiment, an optical head device provides a signal processing circuit which sets a control amount to move an objective lens so that a distance between the objective lens and a given recording layer of the an optical disc coincides with a focal position, an optical path length correction mechanism which corrects an influence of an aberration component producing an error in the focal distance, a thickness difference detection circuit which finds an amount of correction to be made by the optical path length, and an aberration correction circuit which generates a correction signal to correct the influence of the aberration component producing the error in the focal distance detected by the thickness difference detection circuit, and supplies the correction signal to the optical path length correction mechanism.

摘要翻译： 根据一个实施例，光学头装置提供信号处理电路，其设置控制量以移动物镜，使得物镜与光盘的给定记录层之间的距离与焦点位置一致，光学 路径长度校正机构，其校正产生焦距误差的像差分量的影响;求出由光程长度求出的校正量的厚度差检测电路;以及产生校正信号的像差校正电路 以校正产生由厚度差检测电路检测的焦距的误差的像差分量的影响，并将校正信号提供给光路长度校正机构。

公开(公告)号：US20080002540A1

公开(公告)日：2008-01-03

申请号：US11824026

申请日：2007-06-29

申请人： Takehiro Hiramatsu ,  Nobuaki Kaji ,  Sumitaka Maruyama

发明人： Takehiro Hiramatsu ,  Nobuaki Kaji ,  Sumitaka Maruyama

IPC分类号： G11B7/00

CPC分类号： G11B7/1353 ,  G11B7/0903 ,  G11B7/0912 ,  G11B7/0916

摘要： According to one embodiment, a holographic diffraction element is divided into a plurality of regions which diffract reflected light from an optical recording medium to a plurality of photodetectors. Diffracted light for detecting a focus error signal and a compensation signal for a tracking error signal is obtained from one or more common regions of the plurality of regions.

摘要翻译： 根据一个实施例，全息衍射元件被分成将来自光学记录介质的反射光衍射到多个光电检测器的多个区域。 从多个区域的一个或多个公共区域获得用于检测聚焦误差信号的衍射光和跟踪误差信号的补偿信号。

公开(公告)号：US20060187778A1

公开(公告)日：2006-08-24

申请号：US11344956

申请日：2006-01-31

申请人： Nobuaki Kaji ,  Sumitaka Maruyama ,  Akihito Ogawa ,  Kazuo Watabe

发明人： Nobuaki Kaji ,  Sumitaka Maruyama ,  Akihito Ogawa ,  Kazuo Watabe

IPC分类号： G11B7/00

CPC分类号： G11B7/1353 ,  G11B7/131 ,  G11B2007/0006

摘要： According to one embodiment, an optical pickup unit which can record, reproduction and erase information in/from an information recording medium has tracks with different pitches, the dividing means has at least a part of a dividing boundary line placing between an end of a 1st order diffraction light with the largest diffraction angle and an end of a 1st order diffraction light with the smallest diffraction angle of the reflected laser beam.

摘要翻译： 根据一个实施例，可以在信息记录介质中记录，再现和擦除信息的光学拾取单元具有不同间距的轨道，该分割装置具有至少一部分分割边界线，其位于第一 具有最大衍射角的次级衍射光和具有反射激光束的最小衍射角的1级衍射光的末端。