公开(公告)号：US20050207314A1

公开(公告)日：2005-09-22

申请号：US11081961

申请日：2005-03-16

申请人： Hidenori Wada ,  Yoshiaki Komma

发明人： Hidenori Wada ,  Yoshiaki Komma

IPC分类号： G11B7/135

CPC分类号： G11B7/1369

摘要： The Abstract has been amended. A revised Abstract is attached. An optical head includes a laser light source of emitting laser, an objective lens which focuses the laser emitted from the laser light source on an optical recording medium and an optical element placed between the light source and the optical recording medium, of which the transmittance varies depending on a voltage applied. The voltage applied to the optical element is switched so that the optical element has a lower transmittance upon reproducing a signal on the optical recording medium than upon recording a signal on the optical recording medium, at times when recording a signal on the optical recording medium and when reproducing a signal on the optical recording medium.

摘要翻译： 摘要已经修改。 附上修订的摘要。 光头包括发射激光的激光源，将从激光源发射的激光聚焦在光学记录介质上的物镜和放置在光源和光学记录介质之间的光学元件，其中透射率变化 取决于施加的电压。 切换施加到光学元件的电压，使得光学元件在再现光学记录介质上的信号时比在光学记录介质上记录信号时具有较低的透射率，在光学记录介质上记录信号时，以及 当在光学记录介质上再现信号时。

公开(公告)号：US20110122744A1

公开(公告)日：2011-05-26

申请号：US13014031

申请日：2011-01-26

申请人： Yoshiaki KOMMA ,  Kanji Wakabayashi ,  Kousei Sano ,  Toshiyasu Tanaka ,  Keiichi Matsuzaki ,  Hidenori Wada

发明人： Yoshiaki KOMMA ,  Kanji Wakabayashi ,  Kousei Sano ,  Toshiyasu Tanaka ,  Keiichi Matsuzaki ,  Hidenori Wada

IPC分类号： G11B7/09 ,  G01C21/00

CPC分类号： G11B7/1374 ,  G11B2007/0006

摘要： An objective lens unit according to the present invention includes a first objective lens 41; and a first lens holder 2 for supporting the first objective lens 41. The first lens holder 2 is formed of a material which transmits ultraviolet. Preferably, the first lens holder 2 includes a through-hole, having first and second openings 2a and 2b, through which light incident on the first objective lens 41 passes, and an opening limiting section 3 provided along a circumferential direction of the through-hole and projecting toward a central axis of the through-hole. The first objective lens 41 is supported so as to block the first opening 2b. The opening limiting section 3 guides light incident thereon from the second opening 2a in a direction away from an optical axis of the first objective lens.

公开(公告)号：US07944798B2

公开(公告)日：2011-05-17

申请号：US12064360

申请日：2006-08-24

申请人： Yoshiaki Komma ,  Kanji Wakabayashi ,  Kousei Sano ,  Toshiyasu Tanaka ,  Keiichi Matsuzaki ,  Hidenori Wada

发明人： Yoshiaki Komma ,  Kanji Wakabayashi ,  Kousei Sano ,  Toshiyasu Tanaka ,  Keiichi Matsuzaki ,  Hidenori Wada

IPC分类号： G11B7/00

CPC分类号： G11B7/1374 ,  G11B2007/0006

摘要： An objective lens unit according to the present invention includes a first objective lens 41; and a first lens holder 2 for supporting the first objective lens 41. The first lens holder 2 is formed of a material which transmits ultraviolet. Preferably, the first lens holder 2 includes a through-hole, having first and second openings 2a and 2b, through which light incident on the first objective lens 41 passes, and an opening limiting section 3 provided along a circumferential direction of the through-hole and projecting toward a central axis of the through-hole. The first objective lens 41 is supported so as to block the first opening 2b. The opening limiting section 3 guides light incident thereon from the second opening 2a in a direction away from an optical axis of the first objective lens.

摘要翻译： 根据本发明的物镜单元包括第一物镜41; 以及用于支撑第一物镜41的第一透镜保持器2.第一透镜保持器2由透射紫外线的材料形成。 优选地，第一透镜保持件2包括通孔，具有入射在第一物镜41上的光通过的第一和第二开口2a和2b以及沿着通孔的周向设置的开口限制部3 并朝向通孔的中心轴突出。 第一物镜41被支撑以阻挡第一开口2b。 开口限制部3在远离第一物镜的光轴的方向上引导从第二开口2a入射的光。

公开(公告)号：US20100260488A1

公开(公告)日：2010-10-14

申请号：US12740721

申请日：2009-08-26

申请人： Hidenori Wada ,  Yoshiaki Komma ,  Takeshi Shimamoto

发明人： Hidenori Wada ,  Yoshiaki Komma ,  Takeshi Shimamoto

IPC分类号： H04N5/00 ,  G11B3/74 ,  G11B7/00

CPC分类号： G11B7/13925 ,  G11B7/08511 ,  G11B7/1369 ,  G11B2007/0013

摘要： An optical disc device is provided with an optical head (1) including a light source (21), a condensing optical system including an objective lens (28) for receiving a light beam emitted from the light source and forming a microspot on a multilayer optical recording medium, a photodetector (201) for receiving the light beam reflected by the multilayer optical recording medium and outputting an electrical signal corresponding to the amount of light and a coma aberration correcting element (26) for correcting a coma aberration of the condensing optical system, and a processing circuit (3) for controlling the condensing optical system and the coma aberration correcting element. The processing circuit controls the condensing optical system and the coma aberration correcting element so that the correction of the coma aberration from a value suitable for a first recording layer to a value specified for a second recording layer is started before a movement of a focus position of the microspot from the first recording layer to the second recording layer is completed.

摘要翻译： 光盘装置设置有包括光源（21）的光学头（1），包括用于接收从光源发射的光束的物镜（28）的聚光光学系统，并在多层光学 记录介质，用于接收由多层光学记录介质反射的光束并输出对应于光量的电信号的光电检测器（201）和用于校正聚光光学系统的彗形像差的彗形像差校正元件（26） ，以及用于控制聚光光学系统和彗形像差校正元件的处理电路（3）。 处理电路控制聚光光学系统和彗形像差校正元件，使得从适合于第一记录层的值到第二记录层指定的值的彗形像差的校正在聚焦位置的移动之前开始 完成从第一记录层到第二记录层的微点。

公开(公告)号：US20100165823A1

公开(公告)日：2010-07-01

申请号：US12280037

申请日：2007-02-15

申请人： Kanji Wakabayashi ,  Yoshiaki Komma ,  Kousei Sano ,  Hidenori Wada ,  Keiichi Matsuzaki ,  Toshiyasu Tanaka

发明人： Kanji Wakabayashi ,  Yoshiaki Komma ,  Kousei Sano ,  Hidenori Wada ,  Keiichi Matsuzaki ,  Toshiyasu Tanaka

IPC分类号： G11B7/00

CPC分类号： G11B7/1381 ,  G11B7/126 ,  G11B7/1369

摘要： In an optical beam transmissive adjusting mechanism (110) included in an optical pickup device, arrangement positions of a first transmissive element (111) having a first transmittance and a second transmissive element (112) having a second transmittance higher than the first transmittance are switched by a rotational drive unit (105), and an optical beam having a first optical power and an optical beam having a second optical power are output selectively. Furthermore, since a transmissive element of a non-transmissive side for an optical beam is arranged at an angle inclined to an optical axis of the optical beam, the transmissive element does not obstruct a path of the optical beam to be diffused.

摘要翻译： 在包括在光学拾取装置中的光束透射调节机构（110）中，切换具有第一透射率的第一透射元件（111）和具有比第一透射率高的第二透射率的第二透射元件（112）的布置位置 通过旋转驱动单元（105），并且选择性地输出具有第一光功率的光束和具有第二光功率的光束。 此外，由于用于光束的非透射侧的透射元件以与光束的光轴倾斜的角度布置，所以透射元件不会妨碍光束的漫射路径。

公开(公告)号：US20090034403A1

公开(公告)日：2009-02-05

申请号：US12280588

申请日：2007-02-27

申请人： Toshiyasu Tanaka ,  Yoshiaki Komma ,  Kousei Sano ,  Hidenori Wada ,  Keiichi Matsuzaki ,  Kanji Wakabayashi

发明人： Toshiyasu Tanaka ,  Yoshiaki Komma ,  Kousei Sano ,  Hidenori Wada ,  Keiichi Matsuzaki ,  Kanji Wakabayashi

IPC分类号： G11B7/00 ,  G11B7/125

CPC分类号： G11B7/12

摘要： An optical pickup device which can more improve heat radiation efficiency and an optical disk apparatus including the optical pickup device are provided. The optical pickup device having a base (110), a laser unit (141), an optical system (140) which propagates a laser beam, and an adjusting member (142) includes a heat radiation part (146) which is fixed to a heat radiation surface (141b) of the laser unit and which conducts heat from the heat radiation surface to the adjusting member. Therefore, heat generated by the laser unit is transmitted to the adjusting member and then the base through the heat radiation part to make it possible to efficiently perform heat removal for the laser unit.

摘要翻译： 提供了能够更好地提高散热效率的光拾取装置和包括该光拾取装置的光盘装置。 具有基座（110），激光单元（141），传播激光束的光学系统（140）和调节构件（142）的光学拾取装置包括：热辐射部分（146），其固定到 激光单元的散热表面（141b），并且将热量从热辐射表面传导到调节构件。 因此，由激光单元产生的热量通过散热部分传递到调节部件，然后传递到基部，以便有效地执行激光单元的散热。

公开(公告)号：US07466642B2

公开(公告)日：2008-12-16

申请号：US10511867

申请日：2003-04-18

申请人： Kousei Sano ,  Yoshiaki Komma ,  Hidenori Wada ,  Akihiro Yasuda

发明人： Kousei Sano ,  Yoshiaki Komma ,  Hidenori Wada ,  Akihiro Yasuda

IPC分类号： G11B7/135

CPC分类号： G11B7/1275 ,  G02B5/32 ,  G11B7/1353 ,  G11B2007/0006

摘要： The present invention provides a first light source (21) that emits light of a first wavelength, that at least either records onto or reproduces information from an information recording medium (30), a light source (22) that emits light of a second wavelength that records onto or reproduces information from an information recording medium (33), a light source (23) that emits light of a third wavelength that records onto or reproduces information from an information recording medium (23), focusing means, an optical element (28) that passes light of the first wavelength and diffracts light of the second and third wavelengths, wherein the optical element (28) is an optical element in which grooves are formed in a substrate, wherein the expression: 380 nm≦(n−1)×d≦420 nm is satisfied, where n is a refractive index of the substrate at a wavelength of 400 nm, and d (nm) is a depth per step of the grooves, and wherein the grooves are formed in two steps of depth d and depth 2d.

摘要翻译： 本发明提供了一种发射第一波长的光的第一光源（21），其至少从信息记录介质（30）记录信息或从信息记录介质再现信息，发射第二波长的光的光源（22） 从信息记录介质（33）记录信息或从信息记录介质（23）记录第三波长的光的光源（23），从信息记录介质（23），聚焦装置，光学元件（ 28），其通过第一波长的光并衍射第二和第三波长的光，其中光学元件（28）是其中在衬底中形成沟槽的光学元件，其中表达式： 描述=“在线公式”end =“lead”？> 380 nm <=（n-1）xd <= 420 nm <？in-line-formula description =“In-line Formulas”end =“tail”？ >其中n是衬底在400nm波长处的折射率，d（nm） ）是每个凹槽的每个步骤的深度，并且其中凹槽以深度d和深度2d的两个步骤形成。

公开(公告)号：US08614938B2

公开(公告)日：2013-12-24

申请号：US13014045

申请日：2011-01-26

申请人： Yoshiaki Komma ,  Kanji Wakabayashi ,  Kousei Sano ,  Toshiyasu Tanaka ,  Keiichi Matsuzaki ,  Hidenori Wada

发明人： Yoshiaki Komma ,  Kanji Wakabayashi ,  Kousei Sano ,  Toshiyasu Tanaka ,  Keiichi Matsuzaki ,  Hidenori Wada

IPC分类号： G11B7/135

CPC分类号： G11B7/1374 ,  G11B2007/0006

摘要： An objective lens unit according to the present invention includes a first objective lens 41; and a first lens holder 2 for supporting the first objective lens 41. The first lens holder 2 is formed of a material which transmits ultraviolet. Preferably, the first lens holder 2 includes a through-hole, having first and second openings 2a and 2b, through which light incident on the first objective lens 41 passes, and an opening limiting section 3 provided along a circumferential direction of the through-hole and projecting toward a central axis of the through-hole. The first objective lens 41 is supported so as to block the first opening 2b. The opening limiting section 3 guides light incident thereon from the second opening 2a in a direction away from an optical axis of the first objective lens.

摘要翻译： 根据本发明的物镜单元包括第一物镜41; 以及用于支撑第一物镜41的第一透镜保持器2.第一透镜保持器2由透射紫外线的材料形成。 优选地，第一透镜保持件2包括通孔，具有入射在第一物镜41上的光通过的第一和第二开口2a和2b以及沿着通孔的周向设置的开口限制部3 并朝向通孔的中心轴突出。 第一物镜41被支撑以阻挡第一开口2b。 开口限制部3在远离第一物镜的光轴的方向上引导从第二开口2a入射的光。

公开(公告)号：USRE43540E1

公开(公告)日：2012-07-24

申请号：US12946126

申请日：2007-01-23

申请人： Keiichi Matsuzaki ,  Yoshiaki Komma ,  Toshiyasu Tanaka ,  Kousei Sano ,  Kanji Wakabayashi ,  Hidenori Wada

发明人： Keiichi Matsuzaki ,  Yoshiaki Komma ,  Toshiyasu Tanaka ,  Kousei Sano ,  Kanji Wakabayashi ,  Hidenori Wada

IPC分类号： G02B17/00

CPC分类号： G11B7/1353 ,  G11B7/1362 ,  G11B7/1376 ,  G11B7/13925 ,  G11B2007/0013

摘要： A small optical pickup of wide spherical aberration correction range includes a rising mirror for perpendicularly deflecting a light beam and guiding the light beam to an objective lens; a spherical aberration correction lens having one surface formed to a larger curvature than the other surface; a lens holder for holding the correction lens so that the surface of large curvature projects towards the rising mirror side; an axially extending guide member; and a slidable part slidable along the guide member. The projecting portion of the slidable part is configured to be fitted within the side surface of the reflecting surface of the rising mirror, and the projecting portion from the lens holder of the spherical aberration correction lens overlaps the reflecting surface of the rising mirror when the spherical aberration correction lens approaches the rising mirror the most.

摘要翻译： 宽球面像差校正范围的小型光学拾取器包括用于垂直偏转光束并将光束引导到物镜的上升反射镜; 球面像差校正透镜，其一个表面形成为比另一个表面大的曲率; 用于保持校正透镜的透镜保持器，使得大曲率的表面朝向上升反射镜侧突出; 轴向延伸的引导构件; 以及可沿导向件滑动的滑动部件。 可滑动部分的突出部分被配置成装配在上升反射镜的反射表面的侧表面中，并且当球面像差校正透镜的透镜保持器的突出部分与反射镜的反射表面重叠时，当球形 像差校正镜最接近上升镜。

公开(公告)号：US08144564B2

公开(公告)日：2012-03-27

申请号：US12096807

申请日：2006-12-12

申请人： Yoshiaki Komma ,  Kanji Wakabayashi ,  Kousei Sano ,  Toshiyasu Tanaka ,  Keiichi Matsuzaki ,  Hidenori Wada

发明人： Yoshiaki Komma ,  Kanji Wakabayashi ,  Kousei Sano ,  Toshiyasu Tanaka ,  Keiichi Matsuzaki ,  Hidenori Wada

IPC分类号： G11B7/00 ,  G11B7/135 ,  G02B17/00

CPC分类号： G11B7/1395 ,  G11B2007/0006

摘要： An optical head according to the present invention includes: a first light source that emits light with a first wavelength; a beam splitter that splits the light emitted from the first light source into a first light beam traveling in a first direction and a second light beam traveling in a second direction different from the first direction; a first collimator lens for changing degrees of divergence of the first light beam; a first mirror that changes the traveling directions of the first light beam, of which the degrees of divergence have been changed; a first objective lens for converging the first light beam, which has had its traveling directions changed, toward a storage layer of a first optical disk; a mover that holds the first objective lens; a first photodetector that receives the first light beam reflected from the storage layer of the first optical disk and converts it into an electrical signal; a condenser lens for condensing the second light beam; and a second photodetector that receives the second light beam condensed by the condenser lens and converts it into an electrical signal.

摘要翻译： 根据本发明的光头包括：发射具有第一波长的光的第一光源; 将从第一光源发射的光分成沿第一方向传播的第一光束和沿与第一方向不同的第二方向行进的第二光束的分束器; 用于改变第一光束的发散度的第一准直透镜; 改变其偏离度的第一光束的行进方向的第一反射镜; 用于将其行进方向改变的第一光束会聚到第一光盘的存储层的第一物镜; 保持第一个物镜的移动器; 第一光电检测器，其接收从第一光盘的存储层反射的第一光束并将其转换为电信号; 聚光透镜，用于冷凝第二光束; 以及第二光电检测器，其接收由聚光透镜聚光的第二光束并将其转换成电信号。