-
公开(公告)号：US08102749B2
公开(公告)日：2012-01-24
申请号：US12961914
申请日：2010-12-07
IPC分类号： G11B7/00
CPC分类号： G11B7/1275 , G11B7/1353 , G11B7/1374 , G11B2007/0006
摘要： An optical pickup includes: a first emitting unit to emit an optical beam of a first wavelength; a second emitting unit to emit an optical beam of a second wavelength; a third emitting unit to emit an optical beam of a third wavelength; an object lens to condense optical beams emitted from the first through third emitting units onto a signal recording face of an optical disc; and a diffraction unit provided on one face of an optical element or the object lens positioned on the optical path of the optical beams of the first through third wavelengths; wherein the diffraction unit includes a generally circular first diffraction region provided on the innermost perimeter, a ring zone shaped second diffraction region provided on the outer side of the first diffraction region, and a ring zone shaped third diffraction region provided on the outer side of the second diffraction region.
摘要翻译： 光拾取器包括：发射第一波长的光束的第一发射单元; 第二发光单元，发射第二波长的光束; 第三发光单元，发射第三波长的光束; 用于将从第一至第三发射单元发射的光束冷凝到光盘的信号记录面上的物镜; 以及设置在位于所述第一至第三波长的光束的光路上的光学元件或所述物镜的一个面上的衍射单元; 其特征在于，所述衍射单元包括设置在所述最内周边的大致圆形的第一衍射区域，设置在所述第一衍射区域的外侧的环形带状的第二衍射区域和设置在所述第一衍射区域的外侧的环形带状的第三衍射区域 第二衍射区域。
-
公开(公告)号：US07924684B2
公开(公告)日：2011-04-12
申请号：US12142351
申请日：2008-06-19
IPC分类号： G11B7/00
CPC分类号： G11B7/1275 , G11B7/1353 , G11B7/1374 , G11B2007/0006
摘要： An optical pickup includes: a first emitting unit to emit an optical beam of a first wavelength; a second emitting unit to emit an optical beam of a second wavelength; a third emitting unit to emit an optical beam of a third wavelength; an object lens to condense optical beams emitted from the first through third emitting units onto a signal recording face of an optical disc; and a diffraction unit provided on one face of an optical element or the object lens positioned on the optical path of the optical beams of the first through third wavelengths; wherein the diffraction unit includes a generally circular first diffraction region provided on the innermost perimeter, a ring zone shaped second diffraction region provided on the outer side of the first diffraction region, and a ring zone shaped third diffraction region provided on the outer side of the second diffraction region.
摘要翻译： 光拾取器包括：发射第一波长的光束的第一发射单元; 第二发光单元，发射第二波长的光束; 第三发光单元，发射第三波长的光束; 用于将从第一至第三发射单元发射的光束冷凝到光盘的信号记录面上的物镜; 以及设置在位于所述第一至第三波长的光束的光路上的光学元件或所述物镜的一个面上的衍射单元; 其特征在于，所述衍射单元包括设置在所述最内周边的大致圆形的第一衍射区域，设置在所述第一衍射区域的外侧的环形带状的第二衍射区域和设置在所述第一衍射区域的外侧的环形带状的第三衍射区域 第二衍射区域。
-
3.发明授权Optical pickup and optical device for three different types of optical discs 失效用于三种不同类型光盘的光学拾取和光学装置公开(公告)号：US07986595B2
公开(公告)日：2011-07-26
申请号：US12245847
申请日：2008-10-06
CPC分类号： G11B7/1353 , G11B7/1275 , G11B7/1374 , G11B7/13922 , G11B2007/0006
摘要： An optical pickup for performing recording and/or playback of information by selectively irradiating the corresponding wavelength optical beam to first through third optical discs having a protection layer with different thickness, includes emission units for emitting first-wavelength through third-wavelength optical beams corresponding to the respective optical discs respectively, a condensing optical device for condensing each wavelength optical beam on an optical disc signal recording face, a divergence angle transformation device, which can be moved in the optical axis direction, for transforming the divergence angle of each wavelength optical beam according to the moved position in the optical axis direction so as to obtain a predetermined divergence angle, and a detector having a common light receiving unit for receiving each wavelength optical beam separated by an optical path separating unit and returned, with the condensing optical device condensing each wavelength optical beam on the corresponding optical disc signal recording face appropriately.
摘要翻译： 用于通过选择性地将相应的波长光束照射到具有不同厚度的保护层的第一至第三光盘来执行信息的记录和/或重放的光学拾取器包括用于通过与第一波长相对应的第三波长光束发射第一波长的发射单元 相应的光盘，用于聚光光盘信号记录面上的每个波长光束的聚光光学装置，可沿光轴方向移动的发散角变换装置，用于变换每个波长光束的发散角 根据光轴方向的移动位置以获得预定的发散角;以及检测器，其具有用于接收由光路分离单元分离的每个波长光束的共同的光接收单元，并且返回，聚光光学装置冷凝 每个波长光学bea m对应的光盘信号记录面。
-
公开(公告)号：US20110112795A1
公开(公告)日：2011-05-12
申请号：US12917006
申请日：2010-11-01
申请人： Kazumasa Kaneda , Yoshito Asoma
发明人： Kazumasa Kaneda , Yoshito Asoma
CPC分类号： G01S7/4811 , F21V13/04 , F21V13/06 , G01S7/4817 , G01S17/10 , G01S17/42 , G02B3/02 , G02B27/123
摘要： A light condensing lens includes a plurality of lenses disposed side by side in a splitting direction of a view angle to condense incident light over a range corresponding to respective split portions of the view angle. The view angle is split in a direction orthogonal to an optical axis of the incident light.
摘要翻译： 聚光透镜包括在视角的分割方向上并排设置的多个透镜，以在对应于视角的相应分割部分的范围上聚集入射光。 视角在与入射光的光轴正交的方向上分割。
-
公开(公告)号：US08738320B2
公开(公告)日：2014-05-27
申请号：US12917006
申请日：2010-11-01
申请人： Kazumasa Kaneda , Yoshito Asoma
发明人： Kazumasa Kaneda , Yoshito Asoma
CPC分类号： G01S7/4811 , F21V13/04 , F21V13/06 , G01S7/4817 , G01S17/10 , G01S17/42 , G02B3/02 , G02B27/123
摘要： A light condensing lens includes a plurality of lenses disposed side by side in a splitting direction of a view angle to condense incident light over a range corresponding to respective split portions of the view angle. The view angle is split in a direction orthogonal to an optical axis of the incident light.
摘要翻译： 聚光透镜包括在视角的分割方向上并排设置的多个透镜，以在对应于视角的相应分割部分的范围上聚集入射光。 视角在与入射光的光轴正交的方向上分割。
-
公开(公告)号：US20130286356A1
公开(公告)日：2013-10-31
申请号：US13863078
申请日：2013-04-15
CPC分类号： H04N5/7416 , F21V9/14 , F21V13/02 , G02B27/48 , H04N9/3111 , H04N9/3161
摘要： An illumination device includes a laser light source, and a polarization control device configured to control a polarization state of laser light emitted thereon from the laser light source, and to output light having at least two different polarization states.
摘要翻译： 照明装置包括激光光源和偏振控制装置，其被配置为控制从激光源发射的激光的偏振状态，并且输出具有至少两个不同偏振态的光。
-
公开(公告)号：US09285101B2
公开(公告)日：2016-03-15
申请号：US13540740
申请日：2012-07-03
申请人： Kazumasa Kaneda
发明人： Kazumasa Kaneda
CPC分类号： G03B21/2053 , F21V9/14 , F21V13/00 , F21V23/0457 , G02B27/10 , G02B27/126 , G02B27/48 , G02F1/133526 , G02F1/1336 , G02F1/135 , G02F2001/13355 , G03B21/006 , G03B21/2033 , G03B21/2073 , G03B33/12 , H04N9/3155 , H04N9/3161 , H04N9/3164 , H04N9/3167 , H04N9/3194
摘要： An illumination unit includes: a light source section including a laser light source; an optical-path branching device outputting light incident from the light source section, by branching the light into an outgoing optical path of illumination light and other optical path; a photodetector receiving a light flux that travels on the other optical path; a control section controlling an emitted light quantity in the laser light source, based on a quantity of the light flux received by the photodetector; and a light-quantity-distribution control device disposed between the optical-path branching device and the photodetector on the other optical path, the light-quantity-distribution control device controlling a light quantity distribution in the light flux to be incident upon the photodetector.
摘要翻译： 照明单元包括：包括激光源的光源部; 光路分支装置，通过将光分支成照明光和其他光路的出射光路，输出从光源部入射的光; 接收在另一光路上行进的光束的光电检测器; 控制部，其基于所述光检测器所接收的光束的量，控制所述激光光源的发光量; 以及光量分布控制装置，其设置在所述光路分支装置和所述另一光路上的所述光电检测器之间，所述光量分布控制装置控制所述光通量中的光量分布入射到所述光电检测器。
-
公开(公告)号：US20100149955A1
公开(公告)日：2010-06-17
申请号：US12634953
申请日：2009-12-10
申请人： Kazumasa Kaneda
发明人： Kazumasa Kaneda
IPC分类号： G11B7/135
CPC分类号： G11B7/0956 , G11B7/1275 , G11B2007/0006 , G11B2007/0013
摘要： An optical pickup includes: a light source emitting a beam having a predetermined wavelength; a plastic objective lens condensing the emitted beam on an optical disc; a light detector receiving and detecting the beam reflected by the optical disc; an objective-lens driving unit driving the objective lens in the tilt direction to tilt the objective lens; and a tilt-sensitivity sensing unit sensing a tilt sensitivity denoted by ΔWLT/Δθ, where ΔWLT [λrms] is a coma aberration amount Δθ [deg] is a tilt amount at the time of tilting the objective lens, wherein, in the case where the sensed tilt sensitivity is equal to or larger than a predetermined value, tilt is corrected by tilting the objective lens so that signal quality detected by the light detector is improved, and in the case where the sensed tilt sensitivity is smaller than the predetermined value, tilt is not corrected.
摘要翻译： 光拾取器包括：发射具有预定波长的光束的光源; 将发射光束会聚在光盘上的塑料物镜; 接收和检测由光盘反射的光束的光检测器; 物镜驱动单元，在倾斜方向上驱动物镜以倾斜物镜; 和倾斜灵敏度感测单元，其感测由＆Dgr; WLT /＆Dgr;＆Thetas;表示的倾斜灵敏度;其中＆Dgr; WLT [λrms]是彗形像差量＆Dgr; [deg]是倾斜物镜时的倾斜量，其中，在感测到的倾斜灵敏度等于或大于预定值的情况下，通过倾斜物镜来校正倾斜，使得由 光检测器被改善，并且在感测到的倾斜灵敏度小于预定值的情况下，不校正倾斜。
-
公开(公告)号：US07986605B2
公开(公告)日：2011-07-26
申请号：US12494684
申请日：2009-06-30
申请人： Kazumasa Kaneda
发明人： Kazumasa Kaneda
IPC分类号： G11B7/00
CPC分类号： G11B7/13925 , G11B7/1353 , G11B7/1374 , G11B7/1376
摘要： An optical pickup includes a light source emitting a light beam, an objective lens condensing the light beam emitted from the light source onto an optical disc, at least one divergent angle conversion lens (collimator lens) disposed between the light source and the objective lens and changing a divergent angle of the incident light beam, a driving unit (collimator lens driving mechanism) configured to drive the divergent angle conversion lens in a direction of an optical axis, an optical detection device (optical detector) detecting a return light beam reflected at the optical disc, and an environmental change detecting unit (temperature sensor) configured to detect change in environmental temperature, wherein the objective lens is made of a refractive element having, on one surface thereof, a diffraction structure in a stepped shape or a blazed sectional shape, which generates diffraction light providing a spot adapted to perform satisfactory recording and/or reproducing, the objective lens satisfying certain relationships among an amount of wavefront aberration thereof corresponding to change in environmental temperature, an amount of the change in environmental temperature, and a focal length.
摘要翻译： 光拾取器包括发射光束的光源，将从光源发射的光束聚光到光盘上的物镜，设置在光源和物镜之间的至少一个发散角转换透镜（准直透镜）和 改变入射光束的发散角;驱动单元（准直透镜驱动机构），被构造成沿着光轴的方向驱动发散角转换透镜;光检测装置（光检测器），检测在 光盘以及被配置为检测环境温度变化的环境变化检测单元（温度传感器），其中物镜由折射元件制成，折射元件在其一个表面上具有阶梯形状的衍射结构或闪耀的截面 形状，其产生提供适于执行令人满意的记录和/或再现的点的衍射光 e透镜满足与环境温度的变化对应的波前像差量，环境温度变化量和焦距之间的一定关系。
-
公开(公告)号：US07907498B2
公开(公告)日：2011-03-15
申请号：US11227227
申请日：2005-09-16
申请人： Takeshi Tanimoto , Kazumasa Kaneda
发明人： Takeshi Tanimoto , Kazumasa Kaneda
IPC分类号： G11B7/12
CPC分类号： G11B7/1369 , G11B7/13925 , G11B2007/0006
摘要： Spherical aberration, astigmatism and coma can be corrected by a single liquid-crystal optical element, the electrode patterns in the optical element can be simplified, and the optical element can be controlled in a simple manner. The present invention provides an optical pickup including a light source to emit a light beam of a predetermined wavelength, an objective lens to focus the light beam emitted from the light source onto the signal recording surface of an optical disk, a liquid-crystal optical element provided between the light source and objective lens to correct spherical aberration, astigmatism and coma by varying the refractive index thereof, and a photodetector to detect return light from the signal recording surface of the optical disk. The liquid-crystal optical element has a pair of electrodes disposed opposite to each other in the optical-axial direction, and the liquid-crystal optical element has a pattern to correct spherical aberration, pattern to correct astigmatism and a pattern to correct coma, and the patterns are disposed dispersedly on the pair of electrodes to divide the electrode pair into a plurality of zones, and the plurality of zones resulted from division of the electrode pair by the patterns are used in combination to correct the spherical aberration, astigmatism and coma.
摘要翻译： 通过单个液晶光学元件校正球面像差，像散和彗差，可以简化光学元件中的电极图案，并且可以以简单的方式控制光学元件。 本发明提供一种光拾取器，其包括发射预定波长的光束的光源，将从光源发射的光束聚焦到光盘的信号记录表面上的物镜，液晶光学元件 设置在光源和物镜之间以通过改变其折射率来校正球面像差，像散和彗差，以及光电检测器，用于检测来自光盘的信号记录表面的返回光。 液晶光学元件具有在光轴方向上彼此相对设置的一对电极，并且液晶光学元件具有校正球面像差的图案，校正散光的图案和校正彗差的图案，以及 将图案分散配置在该对电极上，以将电极对分割为多个区域，并且组合使用由电极对除以图案而产生的多个区域，以校正球面像差，散光和彗差。
-
-
-
-
-
-
-
-
-
搜索结果
14 条记录 (耗时 0.022 秒)