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公开(公告)号：US20080068975A1
公开(公告)日：2008-03-20
申请号：US11898931
申请日：2007-09-17
CPC分类号： G11B7/0935 , G11B7/1374 , G11B7/22 , G11B2007/0006
摘要： A first objective lens and a second objective lens which are formed as separate bodies each other are held side by side by a lens holder. The lens holder includes a first lens receiving surface to receive a lower surface of peripheral portion of the first objective lens, and a second lens receiving surface to receive a lower surface of peripheral portion of the second objective lens. The first lens receiving surface and the second lens receiving surface are formed to be coplanar. By this arrangement an optical axis of the first objective lens and an optical axis of the second objective lens become parallel to each other at the same time when the first objective lens is installed on the first lens receiving surface and when the second objective lens is installed on the second lens receiving surface, a relative tilt is automatically solved. By a simple structure of the lens holder the relative tilt between the first objective lens and the second objective lens can be reduced as above described. Further, because of above described structure of the lens holder if one of the objective lenses is a commercial product, a commercial product can be easily utilized.
摘要翻译： 形成为分离体的第一物镜和第二物镜由透镜保持器并排地保持。 透镜保持器包括：第一透镜接收表面，用于接收第一物镜的周边部分的下表面;以及第二透镜接收表面，用于接收第二物镜的周边部分的下表面。 第一透镜接收表面和第二透镜接收表面形成为共面的。 通过这种布置，当第一物镜安装在第一透镜接收表面上并且当第二物镜安装时，第一物镜的光轴和第二物镜的光轴在彼此平行的同时 在第二透镜接收表面上，相对倾斜自动解决。 通过透镜架的简单结构，可以如上所述地减小第一物镜和第二物镜之间的相对倾斜度。 此外，由于如果物镜中的一个是商业产品，则透镜保持架的上述结构可以容易地使用商业产品。
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公开(公告)号：US07787340B2
公开(公告)日：2010-08-31
申请号：US11905627
申请日：2007-10-02
IPC分类号： G11B17/00
CPC分类号： G11B7/22 , G11B7/1374 , G11B2007/0006
摘要： The optical pickup includes two objective lenses, and an objective lens holder that holds the two objective lenses. The objective lens holder has two fixture holes that pass through from the lower surface to the upper surface to which the two objective lenses are attached at an upper portion with space between them. The fixture hole is provided with a fixed lens supporting portion and two movable lens supporting portions for supporting the objective lens and adjusting tilt degree thereof. The movable lens supporting portion includes a through hole that passes through to the upper portion of the fixture hole and a column member that is inserted in the through hole in a slidable manner.
摘要翻译： 光学拾取器包括两个物镜和保持两个物镜的物镜支架。 物镜支架具有两个固定孔，它们从下表面穿过上述两个物镜的上表面，上表面之间具有空间。 固定孔设置有固定透镜支撑部分和两个可移动透镜支撑部分，用于支撑物镜并调节其倾斜度。 可移动透镜支撑部分包括穿过固定孔的上部的通孔和以滑动方式插入通孔中的柱构件。
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公开(公告)号：US20080095020A1
公开(公告)日：2008-04-24
申请号：US11905627
申请日：2007-10-02
CPC分类号： G11B7/22 , G11B7/1374 , G11B2007/0006
摘要： The optical pickup includes two objective lenses, and an objective lens holder that holds the two objective lenses. The objective lens holder has two fixture holes that pass through from the lower surface to the upper surface to which the two objective lenses are attached at an upper portion with space between them. The fixture hole is provided with a fixed lens supporting portion and two movable lens supporting portions for supporting the objective lens and adjusting tilt degree thereof. The movable lens supporting portion includes a through hole that passes through to the upper portion of the fixture hole and a column member that is inserted in the through hole in a slidable manner.
摘要翻译： 光学拾取器包括两个物镜和保持两个物镜的物镜支架。 物镜支架具有两个固定孔，它们从下表面穿过上述两个物镜的上表面，并在它们之间具有空间。 固定孔设置有固定透镜支撑部分和两个可移动透镜支撑部分，用于支撑物镜并调节其倾斜度。 可移动透镜支撑部分包括穿过固定孔的上部的通孔和以滑动方式插入到通孔中的柱构件。
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公开(公告)号：US07924688B2
公开(公告)日：2011-04-12
申请号：US11905626
申请日：2007-10-02
IPC分类号： G11B7/135
CPC分类号： G11B7/22 , G11B7/1374 , G11B2007/0006
摘要： An optical pickup includes a first objective lens, a second objective lens having a numerical aperture different from that of the first objective lens, and an objective lens holder that holds the objective lenses. The first objective lens is attached to the objective lens holder via a spacer. The objective lens holder has a first fixture hole that receives the spacer with the first objective lens and a second fixture hole that receives the second objective lens. The first fixture hole is provided with a spacer supporting portion in which the spacer is inserted in a rotatable manner.
摘要翻译： 光拾取器包括第一物镜，具有不同于第一物镜的数值孔径的第二物镜和保持物镜的物镜保持器。 第一物镜通过间隔件附接到物镜支架。 物镜支架具有第一固定孔，其接收具有第一物镜的间隔物和接收第二物镜的第二固定孔。 第一固定孔设置有间隔件支撑部分，其中间隔件以可旋转的方式插入其中。
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公开(公告)号：US20080095019A1
公开(公告)日：2008-04-24
申请号：US11905626
申请日：2007-10-02
CPC分类号： G11B7/22 , G11B7/1374 , G11B2007/0006
摘要： An optical pickup includes a first objective lens, a second objective lens having a numerical aperture different from that of the first objective lens, and an objective lens holder that holds the objective lenses. The first objective lens is attached to the objective lens holder via a spacer. The objective lens holder has a first fixture hole that receives the spacer with the first objective lens and a second fixture hole that receives the second objective lens. The first fixture hole is provided with a spacer supporting portion in which the spacer is inserted in a rotatable manner.
摘要翻译： 光拾取器包括第一物镜，具有不同于第一物镜的数值孔径的第二物镜和保持物镜的物镜保持器。 第一物镜通过间隔件附接到物镜支架。 物镜支架具有第一固定孔，其接收具有第一物镜的间隔物和接收第二物镜的第二固定孔。 第一固定孔设置有间隔件支撑部分，其中间隔件以可旋转的方式插入其中。
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公开(公告)号：US07903506B2
公开(公告)日：2011-03-08
申请号：US11894780
申请日：2007-08-21
IPC分类号： G11B7/00
CPC分类号： G11B7/22 , G02B7/003 , G02B27/0025 , G02B27/62 , G11B7/082 , G11B7/121 , G11B2007/0006
摘要： The present invention provides an optical pickup device capable of properly suppressing coma aberration which occurs due to a relative tilt error between objective lenses. The optical pickup device includes: first and second objective lenses having different optical characteristics; a lens holder provided with first and second lens receiving cylindrical parts to which the first and second objective lenses are attached so that distance from the first objective lens to an optical recording medium becomes shorter than distance from the second objective lens to the optical recording medium without overlapping the objective lenses; and a buffer member formed in a cylindrical shape so as to surround the periphery of the first objective lens, and having a projection for preventing collision between the first objective lens and the optical recording medium, the projection being provided at an end on the optical recording medium side. In the optical pickup device, the second objective lens is fixed in the lens receiving cylindrical part, and a lens tilt adjusting and holding structure for holding the first objective lens so that tilt of the first objective lens can be adjusted is added to the buffer member and the first lens receiving cylindrical part.
摘要翻译： 本发明提供了能够适当地抑制由于物镜之间的相对倾斜误差而发生的彗形像差的光拾取装置。 光学拾取装置包括：具有不同光学特性的第一和第二物镜; 具有第一和第二透镜容纳圆柱形部件的透镜保持器，第一和第二物镜附接到该第一和第二透镜接收圆柱形部分，使得从第一物镜到光学记录介质的距离变得短于距离第二物镜到光学记录介质的距离，而没有 重叠物镜; 以及缓冲构件，其形成为围绕所述第一物镜的周围的圆筒形状，并且具有用于防止所述第一物镜与所述光记录介质之间的碰撞的突起，所述突起设置在所述光学记录 中等 在光学拾取装置中，第二物镜被固定在透镜接收圆柱形部分中，并且用于保持第一物镜的透镜倾斜调节和保持结构使得能够调节第一物镜的倾斜可以被添加到缓冲构件 并且第一透镜接收圆柱形部分。
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公开(公告)号：US20080068960A1
公开(公告)日：2008-03-20
申请号：US11894780
申请日：2007-08-21
IPC分类号： G11B7/00
CPC分类号： G11B7/22 , G02B7/003 , G02B27/0025 , G02B27/62 , G11B7/082 , G11B7/121 , G11B2007/0006
摘要： The present invention provides an optical pickup device capable of properly suppressing coma aberration which occurs due to a relative tilt error between objective lenses. The optical pickup device includes: first and second objective lenses having different optical characteristics; a lens holder provided with first and second lens receiving cylindrical parts to which the first and second objective lenses are attached so that distance from the first objective lens to an optical recording medium becomes shorter than distance from the second objective lens to the optical recording medium without overlapping the objective lenses; and a buffer member formed in a cylindrical shape so as to surround the periphery of the first objective lens, and having a projection for preventing collision between the first objective lens and the optical recording medium, the projection being provided at an end on the optical recording medium side. In the optical pickup device, the second objective lens is fixed in the lens receiving cylindrical part, and a lens tilt adjusting and holding structure for holding the first objective lens so that tilt of the first objective lens can be adjusted is added to the buffer member and the first lens receiving cylindrical part.
摘要翻译： 本发明提供了能够适当地抑制由于物镜之间的相对倾斜误差而发生的彗形像差的光拾取装置。 光学拾取装置包括：具有不同光学特性的第一和第二物镜; 具有第一和第二透镜容纳圆柱形部件的透镜保持器，第一和第二物镜附接到该第一和第二透镜接收圆柱形部分，使得从第一物镜到光学记录介质的距离变得短于距离第二物镜到光学记录介质的距离，而没有 重叠物镜; 以及缓冲构件，其形成为围绕所述第一物镜的周围的圆筒形状，并且具有用于防止所述第一物镜与所述光记录介质之间的碰撞的突起，所述突起设置在所述光学记录 中等 在光学拾取装置中，第二物镜被固定在透镜接收圆柱形部分中，并且用于保持第一物镜的透镜倾斜调节和保持结构使得能够调节第一物镜的倾斜可以被添加到缓冲构件 并且第一透镜接收圆柱形部分。
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公开(公告)号：US08141110B2
公开(公告)日：2012-03-20
申请号：US12415453
申请日：2009-03-31
申请人： Hiromasa Sasaoka , Teruaki Sogawa , Fumiaki Mori
发明人： Hiromasa Sasaoka , Teruaki Sogawa , Fumiaki Mori
CPC分类号： G11B7/22 , G11B2007/0006
摘要： A light-source holder used to hold a light source disposed in an optical pickup comprises: a holder main body portion; a through hole which penetrates the holder main body portion and in which a light source is fitted; a first hold potion that holds a first light source if the first light source is fitted in the through hole from a first side, one of first and second sides of the holder main body portion which are opposite to each other with respect to the holder main body portion; and a second hold portion that holds a second light source if the second light source is fitted in the through hole from a second side, one of the first and second sides of the holder main body portion which are opposite to each other with respect to the holder main body portion.
摘要翻译： 用于保持设置在光学拾取器中的光源的光源保持器包括：保持器主体部分; 穿过保持器主体部分并且安装有光源的通孔; 第一保持药剂，如果第一光源从第一侧装配在通孔中，则保持第一光源，保持器主体部分的第一和第二侧中的一个相对于保持器主体彼此相对 身体部位 以及第二保持部，如果所述第二光源从所述第二侧嵌合在所述通孔中，则保持所述第二光源，所述保持器主体部的所述第一和第二侧中的一个相对于所述第二光源彼此相对 支架主体部分。
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公开(公告)号：US08024749B2
公开(公告)日：2011-09-20
申请号：US12424855
申请日：2009-04-16
申请人： Hiromasa Sasaoka , Fumiaki Mori
发明人： Hiromasa Sasaoka , Fumiaki Mori
IPC分类号： G11B7/08
CPC分类号： G11B7/08582 , G11B7/22
摘要： A base of an optical pickup includes a first bearing portion through which one of two guide shafts disposed in parallel to each other is inserted and a second bearing portion through which the other guide shaft is inserted, and is slidable along the two guide shafts. Under the first guide shaft that is inserted through the first bearing portion, a nut hold portion for holding a nut that connects a member of a drive mechanism for driving the base and the base to each other is disposed on the base. The nut hold portion includes an insertion opening that allows the nut to be inserted along a direction substantially parallel to a longitudinal direction of the first guide shaft.
摘要翻译： 光学拾取器的基座包括：第一轴承部，插入彼此平行设置的两个引导轴中的一个;第二轴承部，另一个引导轴穿过该第二轴承部，并且可沿着两个引导轴滑动。 在通过第一轴承部分插入的第一引导轴下方，在基座上设置有用于保持连接用于驱动基座的驱动机构的构件和基座的螺母的螺母保持部。 螺母保持部包括允许螺母沿着基本上平行于第一引导轴的纵向的方向插入的插入开口。
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公开(公告)号：US20080062837A1
公开(公告)日：2008-03-13
申请号：US11898352
申请日：2007-09-11
申请人： Hiromasa Sasaoka
发明人： Hiromasa Sasaoka
IPC分类号： G11B7/00
CPC分类号： G02B7/023 , G02B7/14 , G11B7/082 , G11B7/0935 , G11B7/121 , G11B7/1374 , G11B7/22 , G11B2007/0006
摘要： A tilt adjusting mechanism adjusts a tilt of at least one of a plurality of objective lenses so that they have the same inclination state. The tilt adjusting mechanism includes an aperture member to which an objective lens to be a target of the tilt adjustment is fixed, and a lens holder to which the aperture member is fixed from a slidable state for the tilt adjustment. As a surface for sliding movement of the aperture member with respect to the lens holder, there is provided a sliding surface that is a part of a spherical surface having a center that is a principal point of the objective lens or adjacent point thereof.
摘要翻译： 倾斜调节机构调节多个物镜中的至少一个的倾斜度，使得它们具有相同的倾斜状态。 倾斜调节机构包括：作为倾斜调整对象的物镜被固定的孔径构件，以及用于倾斜调节的光圈构件从滑动状态固定到的透镜保持架。 作为孔径构件相对于透镜保持器的滑动运动的表面，设置有作为球面的一部分的滑动面，该球面具有作为物镜的主要点或其相邻点的中心。
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