公开(公告)号：US08125876B2

公开(公告)日：2012-02-28

申请号：US12605500

申请日：2009-10-26

申请人： Motoo Aiba ,  Kiyoshi Toyota ,  Hiroyuki Sakakibara ,  Toyokazu Takahashi ,  Kouhei Anju ,  Kenichi Ogawa

发明人： Motoo Aiba ,  Kiyoshi Toyota ,  Hiroyuki Sakakibara ,  Toyokazu Takahashi ,  Kouhei Anju ,  Kenichi Ogawa

IPC分类号： G11B7/135

CPC分类号： G11B7/1374 ,  G11B7/13925

摘要： Provided is an objective lens for which expressions 0.83

摘要翻译： 提供了满足表达式0.83 <（pM / pL）<1.17和0.83 <（pM / pT）<1.17或表达式0.80 <（pM / pL）<1.20和0.86 <（pM / pT）<1.14的物镜 ，其中pL是五阶球面像差与三阶球面像差的比率，球面像差是由光记录介质的覆盖层的厚度差引起的，pT是五阶球面像差的比率 到三阶球面像差，球面像差是由物镜的环境温度变化引起的，pM是五阶球面像差与三阶球面像差的比值，球面像差是由 事件放大的变化。

公开(公告)号：US20100103801A1

公开(公告)日：2010-04-29

申请号：US12605500

申请日：2009-10-26

申请人： Motoo Aiba ,  Kiyoshi Toyota ,  Hiroyuki Sakakibara ,  Toyokazu Takahashi ,  Kouhei Anju ,  Kenichi Ogawa

发明人： Motoo Aiba ,  Kiyoshi Toyota ,  Hiroyuki Sakakibara ,  Toyokazu Takahashi ,  Kouhei Anju ,  Kenichi Ogawa

IPC分类号： G11B7/00

CPC分类号： G11B7/1374 ,  G11B7/13925

摘要： Provided is an objective lens for which expressions 0.83

摘要翻译： 提供了满足表达式0.83 <（pM / pL）<1.17和0.83 <（pM / pT）<1.17或表达式0.80 <（pM / pL）<1.20和0.86 <（pM / pT）<1.14的物镜 ，其中pL是五阶球面像差与三阶球面像差的比率，球面像差是由光记录介质的覆盖层的厚度差引起的，pT是五阶球面像差的比率 到三阶球面像差，球面像差是由物镜的环境温度变化引起的，pM是五阶球面像差与三阶球面像差的比值，球面像差是由 事件放大的变化。

公开(公告)号：US20110110217A1

公开(公告)日：2011-05-12

申请号：US12917580

申请日：2010-11-02

申请人： Motoo Aiba ,  Kouhei Anju

发明人： Motoo Aiba ,  Kouhei Anju

IPC分类号： G11B7/00

CPC分类号： G11B7/1374 ,  G11B7/1376 ,  G11B7/13925

摘要： An objective lens is made of a resin material and focuses incident rays, which have a wavelength of 410 nm or less and are emitted from a light source, on an optical disc at a numerical aperture of 0.8 or more, wherein when a lens tilt sensitivity is defined as an amount of a 3rd-order coma aberration caused per a lens tilt of 1 degree which is an angle formed between an optical axis of the objective lens and a system optical axis of an optical system including the objective lens at 0° C., the lens tilt sensitivity is 130 mλrms/degree or less.

摘要翻译： 物镜由树脂材料制成，并将波长为410nm以下并从光源发射的入射光线聚焦在数值孔径为0.8以上的光盘上，其中当透镜倾斜灵敏度 被定义为每1个透镜倾斜度引起的3阶彗形像差的量，该角度是在物镜的光轴与包含物镜的光学系统在0℃的系统光轴之间形成的角度 镜头倾斜灵敏度为130mλrms/度以下。

公开(公告)号：US20110069598A1

公开(公告)日：2011-03-24

申请号：US12880242

申请日：2010-09-13

申请人： Kouhei Anju ,  Motoo Aiba

发明人： Kouhei Anju ,  Motoo Aiba

IPC分类号： G11B7/135 ,  G02B3/00

CPC分类号： G11B7/1374 ,  G02B13/16 ,  G02B27/0025 ,  G02B2207/125

摘要： An objective lens has a numerical aperture of 8.0 or more and focusing a light beam of a wavelength λ of at least 450 nm or less on an optical information recording medium. In this objective lens, a wavefront-aberration deterioration level TOR, accumulative value of aberration deterioration, satisfies the equation (1): TOR=√{square root over (2.52(DCm32+DCm52)+(TSA32+TSA52))}{square root over (2.52(DCm32+DCm52)+(TSA32+TSA52))}≦0.07[λrms]  (1) In the equation (1), TSA3 [λrm/μm] and TSA5 [λrm/μm] refer to a third-order thickness sensitivity level and a fifth-order thickness sensitivity level, which are generated when a thickness error from a predetermined thickness is +1 μm, respectively. DCm3 and DCm5 refer to a third-order decentering sensitivity level and a fifth-order decentering sensitivity level, which are generated when a decentering error of each of lens surfaces is 1 μm, respectively.

摘要翻译： 物镜的数值孔径为8.0以上，将波长λ至少为450nm以下的光束聚焦在光学信息记录介质上。 在该物镜中，波面像差劣化水平TOR，像差劣化的累积值满足式（1）：TOR =√{平方根超过（2.52（DCm32 + DCm52）+（TSA32 + TSA52））} {square 根据（2.52（DCm32 + DCm52）+（TSA32 + TSA52））}＆nlE; 0.07 [λrms]（1）在等式（1）中，TSA3 [λrm/μm]和TSA5 [λrm/ - 当厚度误差从预定厚度分别为+1μm时产生的 - 阶厚度灵敏度水平和五阶厚度灵敏度水平。 DCm3和DCm5是指当每个透镜表面的偏心误差分别为1μm时产生的三阶偏心灵敏度水平和五阶偏心灵敏度水平。

公开(公告)号：US08315130B2

公开(公告)日：2012-11-20

申请号：US12917580

申请日：2010-11-02

申请人： Motoo Aiba ,  Kouhei Anju

发明人： Motoo Aiba ,  Kouhei Anju

IPC分类号： G11B7/00

CPC分类号： G11B7/1374 ,  G11B7/1376 ,  G11B7/13925

摘要： An objective lens is made of a resin material and focuses incident rays, which have a wavelength of 410 nm or less and are emitted from a light source, on an optical disc at a numerical aperture of 0.8 or more, wherein when a lens tilt sensitivity is defined as an amount of a 3rd-order coma aberration caused per a lens tilt of 1 degree which is an angle formed between an optical axis of the objective lens and a system optical axis of an optical system including the objective lens at 0° C., the lens tilt sensitivity is 130 mλrms/degree or less.

摘要翻译： 物镜由树脂材料制成，并将波长为410nm以下并从光源发射的入射光线聚焦在数值孔径为0.8以上的光盘上，其中当透镜倾斜灵敏度 被定义为每1个透镜倾斜度引起的3阶彗形像差的量，该角度是在物镜的光轴与包含物镜的光学系统在0℃的系统光轴之间形成的角度 镜头倾斜灵敏度为130mλrms/度以下。

公开(公告)号：US08228777B2

公开(公告)日：2012-07-24

申请号：US12880242

申请日：2010-09-13

申请人： Kouhei Anju ,  Motoo Aiba

发明人： Kouhei Anju ,  Motoo Aiba

IPC分类号： G11B7/135

CPC分类号： G11B7/1374 ,  G02B13/16 ,  G02B27/0025 ,  G02B2207/125

摘要： An objective lens has a numerical aperture of 0.8 or more and focusing a light beam of a wavelength λ of at least 450 nm or less on an optical information recording medium. In this objective lens, a wavefront-aberration deterioration level TOR, accumulative value of aberration deterioration, satisfies the equation (1): TOR=√{square root over (2.52(DCm32+DCm52)+(TSA32+TSA52))}{square root over (2.52(DCm32+DCm52)+(TSA32+TSA52))}≦0.07[λrms]  (1) In the equation (1), TSA3 [λrms/μm] and TSA5 [λrms/μm] refer to a third-order thickness sensitivity level and a fifth-order thickness sensitivity level, which are generated when a thickness error from a predetermined thickness is +1 μm, respectively. DCm3 and DCm5 refer to a third-order decentering sensitivity level and a fifth-order decentering sensitivity level, which are generated when a decentering error of each of lens surfaces is 1 μm, respectively.

摘要翻译： 物镜的数值孔径为0.8以上，将光波长λ至少为450nm以下的光束聚焦在光信息记录介质上。 在该物镜中，波面像差劣化水平TOR，像差劣化的累积值满足式（1）：TOR =√{平方根超过（2.52（DCm32 + DCm52）+（TSA32 + TSA52））} {square 根系（2.52（DCm32 + DCm52）+（TSA32 + TSA52））}＆nlE; 0.07 [λrms]（1）在等式（1）中，TSA3 [λrms/μm]和TSA5 [λrms/ - 当厚度误差从预定厚度分别为+1μm时产生的 - 阶厚度灵敏度水平和五阶厚度灵敏度水平。 DCm3和DCm5是指当每个透镜表面的偏心误差分别为1μm时产生的三阶偏心灵敏度水平和五阶偏心灵敏度水平。

公开(公告)号：US08599672B2

公开(公告)日：2013-12-03

申请号：US13601589

申请日：2012-08-31

申请人： Motoo Aiba ,  Hiroyuki Sakakibara ,  Taiji Minakawa ,  Fumihiko Hanzawa ,  Masashi Abe ,  Jun Adachi ,  Katsutoshi Sato

发明人： Motoo Aiba ,  Hiroyuki Sakakibara ,  Taiji Minakawa ,  Fumihiko Hanzawa ,  Masashi Abe ,  Jun Adachi ,  Katsutoshi Sato

IPC分类号： G11B7/00

CPC分类号： G11B20/18 ,  G11B7/1353 ,  G11B7/1374 ,  G11B7/13922 ,  G11B20/10472 ,  G11B2007/0006 ,  G11B2220/2541

摘要： Provided is an objective lens including a diffraction portion provided on a laser beam incident plane or output plane. The diffraction portion includes first second, and third diffraction regions, wherein first laser beams corresponding to a first optical disc having a first transmissive layer are condensed on a data recording portion of the first optical disc, second laser beams corresponding to a second optical disc having a second transmissive layer thicker than the first transmissive layer are condensed on a data recording portion of the second optical disc, and third laser beams corresponding to a third optical disc having a third transmissive layer thicker than the second transmissive layer are condensed on a data recording portion of the third optical disc. An evaluation parameter calculated on the basis of an in-plane efficiency distribution function has a value corresponding to a symbol error rate that is less than a predetermined value.

摘要翻译： 提供一种物镜，其包括设置在激光束入射面或输出面上的衍射部。 衍射部分包括第一和第三衍射区域，其中对应于具有第一透射层的第一光盘的第一激光束在第一光盘的数据记录部分上被冷凝，第二激光束对应于具有 比第一透射层厚的第二透射层被冷凝在第二光盘的数据记录部分上，并且对应于具有比第二透射层厚的第三透射层的第三光盘的第三激光束在数据记录 第三光盘的一部分。 基于面内效率分布函数计算的评价参数具有与小于预定值的符号错误率对应的值。

公开(公告)号：US20130094339A1

公开(公告)日：2013-04-18

申请号：US13601589

申请日：2012-08-31

申请人： Motoo Aiba ,  Hiroyuki Sakakibara ,  Taiji Minakawa ,  Fumihiko Hanzawa ,  Masashi Abe ,  Jun Adachi ,  Katsutoshi Sato

发明人： Motoo Aiba ,  Hiroyuki Sakakibara ,  Taiji Minakawa ,  Fumihiko Hanzawa ,  Masashi Abe ,  Jun Adachi ,  Katsutoshi Sato

IPC分类号： G11B20/18

CPC分类号： G11B20/18 ,  G11B7/1353 ,  G11B7/1374 ,  G11B7/13922 ,  G11B20/10472 ,  G11B2007/0006 ,  G11B2220/2541

摘要： Provided is an objective lens including a diffraction portion provided on a laser beam incident plane or output plane. The diffraction portion includes first second, and third diffraction regions, wherein first laser beams corresponding to a first optical disc having a first transmissive layer are condensed on a data recording portion of the first optical disc, second laser beams corresponding to a second optical disc having a second transmissive layer thicker than the first transmissive layer are condensed on a data recording portion of the second optical disc, and third laser beams corresponding to a third optical disc having a third transmissive layer thicker than the second transmissive layer are condensed on a data recording portion of the third optical disc. An evaluation parameter calculated on the basis of an in-plane efficiency distribution function has a value corresponding to a symbol error rate that is less than a predetermined value.

摘要翻译： 提供一种物镜，其包括设置在激光束入射面或输出面上的衍射部。 衍射部分包括第一和第三衍射区域，其中对应于具有第一透射层的第一光盘的第一激光束在第一光盘的数据记录部分上被冷凝，第二激光束对应于具有 比第一透射层厚的第二透射层被冷凝在第二光盘的数据记录部分上，并且对应于具有比第二透射层厚的第三透射层的第三光盘的第三激光束在数据记录 第三光盘的一部分。 基于面内效率分布函数计算的评价参数具有与小于预定值的符号错误率对应的值。

公开(公告)号：US07821905B2

公开(公告)日：2010-10-26

申请号：US12032090

申请日：2008-02-15

申请人： Masahiro Saito ,  Kiyoshi Toyota ,  Motoo Aiba

发明人： Masahiro Saito ,  Kiyoshi Toyota ,  Motoo Aiba

IPC分类号： G11B7/00

CPC分类号： G02B27/0037 ,  G02B7/008 ,  G02B7/028 ,  G02B27/4238 ,  G02B27/4283 ,  G11B7/1374 ,  G11B7/1376 ,  G11B7/13925

摘要： An optical pickup device is disclosed. The device includes: a light source that emits a light beam of a predetermined wavelength of about 405 nm; an objective lens being a plastic lens provided with, on at least one surface, diffraction means of a zone diffractive structure suppressing generation of aberration to be caused by a temperature change, and has a numerical aperture of 0.82 or larger for gathering the light beam emitted from the light source with respect to an optical disk; and a collimator lens disposed between the light source and the objective lens, and derives a substantially-collimated light by converting an angle of divergence of the light beam emitted from the light source.

摘要翻译： 公开了一种光学拾取装置。 该装置包括：发射约405nm的预定波长的光束的光源; 物镜是在至少一个表面上设置有抑制由温度变化引起的像差产生的区域衍射结构的衍射装置的塑料透镜，并且具有0.82或更大的数值孔径用于收集所发射的光束 从光源相对于光盘; 以及设置在光源和物镜之间的准直透镜，并且通过转换从光源发射的光束的发散角来导出基本上准直的光。

公开(公告)号：US20080198465A1

公开(公告)日：2008-08-21

申请号：US12032090

申请日：2008-02-15

申请人： Masahiro SAITO ,  Kiyoshi Toyota ,  Motoo Aiba

发明人： Masahiro SAITO ,  Kiyoshi Toyota ,  Motoo Aiba

IPC分类号： G02B27/44

CPC分类号： G02B27/0037 ,  G02B7/008 ,  G02B7/028 ,  G02B27/4238 ,  G02B27/4283 ,  G11B7/1374 ,  G11B7/1376 ,  G11B7/13925

摘要： An optical pickup device is disclosed. The device includes: a light source that emits a light beam of a predetermined wavelength of about 405 nm; an objective lens being a plastic lens provided with, on at least one surface, diffraction means of a zone diffractive structure suppressing generation of aberration to be caused by a temperature change, and has a numerical aperture of 0.82 or larger for gathering the light beam emitted from the light source with respect to an optical disk; and a collimator lens disposed between the light source and the objective lens, and derives a substantially-collimated light by converting an angle of divergence of the light beam emitted from the light source.

摘要翻译： 公开了一种光学拾取装置。 该装置包括：发射约405nm的预定波长的光束的光源; 物镜是在至少一个表面上设置有抑制由温度变化引起的像差产生的区域衍射结构的衍射装置的塑料透镜，并且具有0.82或更大的数值孔径用于收集所发射的光束 从光源相对于光盘; 以及设置在光源和物镜之间的准直透镜，并且通过转换从光源发射的光束的发散角来导出基本上准直的光。