公开(公告)号：EP1168317A4

公开(公告)日：2006-06-21

申请号：EP00979983

申请日：2000-12-07

Applicant: KONICA MINOLTA OPTO INC

Inventor： SAITO SHINICHIRO

IPC: G02B3/08 ,  G02B3/10 ,  G11B7/00 ,  G11B7/135 ,  G02B13/00

CPC classification number: G11B7/1374 ,  G02B3/08 ,  G02B3/10 ,  G11B7/1353 ,  G11B7/1367 ,  G11B7/13922 ,  G11B2007/0006

Abstract: An optical pickup device comprising first and second light sources for emitting beams of light of wavelengths μ1, μ2, a focusing optical system, and an optical sensor for recording/reproducing information about optical information recording media of at least two types, wherein a first optical information recording medium has a necessary numeric aperture larger than that of a second optical information recording medium, the focusing optical system splits a beam of light into k (k⊃4) annular beams, the first and k-th beams of the first-wavelength beam are focused onto the information recording surface of the first optical information recording medium, at least two beams out of the second to (k-1)-th beams of the first-wavelength beam have the apparent best image plane position different of that of the first and (k-th beams, and the optical pickup device has an optical element so formed that the wave aberrations of the light in the first to k-th beams of the first-wavelength beam passing through the necessary numerical aperture of the first optical information recording medium are generally integral multiples of μ1 in the best image plane position of the first and k-th beams.

公开(公告)号：JP2005293667A

公开(公告)日：2005-10-20

申请号：JP2004104252

申请日：2004-03-31

Applicant: Konica Minolta Opto Inc ,  コニカミノルタオプト株式会社

Inventor： SAITO SHINICHIRO

IPC: G11B7/09 ,  G11B7/125 ,  G11B7/135

Abstract: PROBLEM TO BE SOLVED: To provide an optical pickup device for which time and labor for assembling and adjusting work can be reduced and which can be small-sized, and an optical system unit. SOLUTION: By using an expander optical system EXP and a single piezoelectric actuator PZ formed into a unit, a lens L2 held by a lens holder HD2 is moved with a large amount of travel, or with a small amount of travel. Thus, two actuators having different characteristics from each other as those disclosed in conventional technology are not needed and the device is made compact. COPYRIGHT: (C)2006,JPO&NCIPI

Abstract translation: 要解决的问题：提供一种可以减少组装和调整工作的时间和劳动并且可以小型化的光学拾取装置和光学系统单元。 解决方案：通过使用扩展器光学系统EXP和形成为单元的单个压电致动器PZ，由透镜架HD2保持的透镜L2以大量的行程或少量行程移动。 因此，不需要具有与传统技术中公开的那些相同的不同特性的两个致动器，并且该装置被制造得紧凑。 版权所有（C）2006，JPO＆NCIPI

公开(公告)号：JP2005116147A

公开(公告)日：2005-04-28

申请号：JP2004201625

申请日：2004-07-08

Applicant: Konica Minolta Opto Inc ,  コニカミノルタオプト株式会社

Inventor： OTA TATSUO ,  ARAI NORIKAZU ,  SAITO SHINICHIRO

IPC: G02B5/18 ,  G02B1/11 ,  G02B3/00 ,  G11B7/135

Abstract: PROBLEM TO BE SOLVED: To provide optical components and optical pickup apparatus which keep the light transmittance high while ensuring good wiping resistance characteristics, and also realize intrinsic optical characteristics of a fine structure. SOLUTION: In an objective lens, since the number of film layers of an antireflection film is comparatively reduced in a first optical surface S1 forming diffraction structure D and film thickness is comparatively thin, a shape of fine structure after film forming is easy to keep, deterioration of a diffraction property or the like is evaded, while a wiping property is improved. On the other hand, the fine structure is not formed in a second optical surface S2, even if film thickness of the antireflection film is increased, large deterioration of the optical property is not caused, the wiping property is not reduced. Therefore, the number of film layers of a antireflection film is increased and a sufficient reflection preventing function is displayed. COPYRIGHT: (C)2005,JPO&NCIPI

Abstract translation: 要解决的问题：为了提供保持良好的耐擦拭性特性而保持透光率的光学元件和光学拾取装置，并且还实现精细结构的固有光学特性。 解决方案：在物镜中，由于在形成衍射结构D的第一光学表面S1中防反射膜的膜层数量相对减少，并且膜厚度相对较薄，成膜后的微细结构形状容易 为了保持，避免衍射性等的恶化，同时擦拭性能得到改善。 另一方面，即使在第二光学面S2上形成微细结构，即使增加防反射膜的膜厚，也不会导致光学特性的劣化大，擦拭性也不会降低。 因此，防反射膜的膜层数量增加，并且显示出足够的防反射功能。 版权所有（C）2005，JPO＆NCIPI

公开(公告)号：JP2009059400A

公开(公告)日：2009-03-19

申请号：JP2007223980

申请日：2007-08-30

Applicant: Konica Minolta Opto Inc ,  コニカミノルタオプト株式会社

Inventor： SAITO SHINICHIRO

IPC: G11B7/135 ,  G02B13/00 ,  G11B7/22

Abstract: PROBLEM TO BE SOLVED: To provide an optical element and a mold which recognizes both a part type and an aberration measurement reference separately. SOLUTION: A concave section for forming a mark MK2 for part type recognition and a mark MK1 for an aberration measurement reference is formed on the mold 1 for molding the optical element (an objective lens OBJ) in a transfer surface of a flange section. The marks MK1 and MK2 are transferred onto the optical element by molding. An aberration analysis is carried out after only the aberration measurement direction reference is detected and then allocated unidirectionally when measuring the aberration automatically. COPYRIGHT: (C)2009,JPO&INPIT

Abstract translation: 要解决的问题：提供分别识别部件型和像差测量基准的光学元件和模具。 解决方案：在模具1上形成用于形成用于部件型识别的标记MK2的凹部和用于像差测量基准的标记MK1，用于在凸缘的转印表面中模制光学元件（物镜OBJ） 部分。 标记MK1和MK2通过模制转印到光学元件上。 仅在检测到像差测量方向基准之后进行像差分析，然后在自动测量像差时单向分配。 版权所有（C）2009，JPO＆INPIT

公开(公告)号：JP2005084594A

公开(公告)日：2005-03-31

申请号：JP2003319471

申请日：2003-09-11

Applicant: Konica Minolta Opto Inc ,  コニカミノルタオプト株式会社

Inventor： SAITO SHINICHIRO ,  SHIN YUICHI

IPC: G02B5/18 ,  G02B1/11 ,  G11B7/135

Abstract: PROBLEM TO BE SOLVED: To provide an optical element which can maintain high transmission efficiency even if a film thickness of a coating layer is increased and an optical pickup device using the same. SOLUTION: The optical pickup device is so constituted that, when the luminous fluxes L parallel to an optical axis are made incident on the optical element OE, the luminous flux L (aligned to a virtual straight line) made incident on an antireflection film RM takes an optical path arriving at the optical element OE by passing the interior of air without returning therein. As a result, the luminous fluxes that can be contributed to beam condensing can be increased and the transmittance can be thereby increased. COPYRIGHT: (C)2005,JPO&NCIPI

Abstract translation: 要解决的问题：提供即使涂层的膜厚度增加也能够保持高传动效率的光学元件和使用该光学元件的光学拾取装置。 解决方案：光拾取装置的结构使得当平行于光轴的光束L入射到光学元件OE上时，入射到抗反射上的光通量L（与虚拟直线对准） 胶片RM通过使空气内部通过而不返回到光学元件OE的光路。 结果，可以增加可以促成光束冷凝的光通量，从而可以提高透射率。 版权所有（C）2005，JPO＆NCIPI

公开(公告)号：JP2012059352A

公开(公告)日：2012-03-22

申请号：JP2011228439

申请日：2011-10-18

Applicant: Konica Minolta Opto Inc ,  コニカミノルタオプト株式会社

Inventor： SAITO SHINICHIRO

IPC: G11B7/135 ,  G02B3/00

Abstract: PROBLEM TO BE SOLVED: To provide an optical element that allows for distinction and compatibility of component type recognition and aberration measurement reference recognition, and a metal mold.SOLUTION: In a metal mold 1 for forming an optical element (an objective lens OBJ), recessed portions for forming a mark MK2 for component type distinction and a mark MK1 as an aberration measurement direction reference are previously formed on a flange portion transfer surface. The marks MK1, MK2 are transferred on the optical element by molding. In the case of aberration automatic measurement, only the aberration measurement direction reference is detected, and then, aberration analysis is performed after placement in a fixed direction.

Abstract translation: 要解决的问题：提供允许组件类型识别和像差测量参考识别的区别和兼容性的光学元件以及金属模具。 解决方案：在用于形成光学元件（物镜OBJ）的金属模具1中，预先在凸缘部分上形成用于形成用于部件类型区分的标记MK2的凹部和作为像差测量方向基准的标记MK1 转移面。 标记MK1，MK2通过模制转印到光学元件上。 在像差自动测量的情况下，仅检测像差测量方向基准，然后在固定方向放置之后进行像差分析。 版权所有（C）2012，JPO＆INPIT

公开(公告)号：JP2005141800A

公开(公告)日：2005-06-02

申请号：JP2003374625

申请日：2003-11-04

Applicant: Konica Minolta Opto Inc ,  コニカミノルタオプト株式会社

Inventor： IKENAKA SEINO ,  SAITO SHINICHIRO ,  SHIN YUICHI

IPC: G02B13/00 ,  G02B13/18 ,  G11B7/135

Abstract: PROBLEM TO BE SOLVED: To provide a divergent angle conversion element having compatibility among AOD, DVD and CD, and capable of simultaneously securing a light amount and correcting an aberration, and an optical pickup device. SOLUTION: The optical magnifications m2 and m3 of a divergent angle conversion element through which the luminous flux of a wavelength λ2 and the luminous flux of a wavelength λ3 pass together with respect to the luminous fluxes of the wavelengths λ2 and λ3 are different from each other, and the distance T2 (mm) of an optical axis from the emission point of a second light source to the information recording surface of a second optical information recording medium, and the distance T3 (mm) of an optical axis from the emission point of a third light source to the information recording surface of a third optical information recording medium satisfy T2+0.6=T3. COPYRIGHT: (C)2005,JPO&NCIPI

Abstract translation: 要解决的问题：提供一种在AOD，DVD和CD之间具有兼容性并且能够同时确保光量并校正像差的发散角转换元件和光学拾取装置。 解决方案：波长λ2的光通量和波长λ3的光通量相对于波长λ2和λ3的光通量通过的发散角转换元件的光学倍率m2和m3是不同的 和从第二光源的发射点到第二光学信息记录介质的信息记录表面的光轴的距离T2（mm），以及光轴与第二光信息记录介质的距离T3（mm） 第三光源的发射点到第三光信息记录介质的信息记录表面满足T2 + 0.6 = T3。 版权所有（C）2005，JPO＆NCIPI

公开(公告)号：JP2005108350A

公开(公告)日：2005-04-21

申请号：JP2003342022

申请日：2003-09-30

Applicant: Konica Minolta Opto Inc ,  コニカミノルタオプト株式会社

Inventor： SAITO SHINICHIRO

IPC: G11B7/08 ,  G11B7/09 ,  G11B7/125 ,  G11B7/13 ,  G11B7/135

Abstract: PROBLEM TO BE SOLVED: To provide an optical pickup system where occurrence of a failure caused by the constitution of a package light source unit is suppressed, and to provide a method of adjusting the optical pickup system and an optical information recording and reproducing device. SOLUTION: The optical pickup device is provided with the package light source unit where a plurality of light-emitting points emitting light of different wavelengths are housed in one casing, a divergence angle changing element for changing the divergence angles of respective luminous fluxes from the package light source unit, an objective optical element, a light-receiving element, etc. Then, the package light source unit configures the optical paths of the respective luminous fluxes emitted from the respective light-emitting points in the casing to emit the respective luminous flux with their light paths matched with an optical axis, and moves the divergence angle changing element in the direction of the optical axis to compensate the optical path difference between respective luminous fluxes occurring within the casing. COPYRIGHT: (C)2005,JPO&NCIPI

Abstract translation: 解决的问题：为了提供抑制由封装光源单元的结构引起的故障的发生的光学拾取系统，并且提供一种调整光学拾取系统和光学信息记录和再现的方法 设备。 解决方案：光拾取装置设置有封装光源单元，其中发射不同波长的光的多个发光点容纳在一个外壳中，发散角改变元件用于改变各个光束的发散角 从封装光源单元，物镜光学元件，光接收元件等。然后，封装光源单元配置从壳体中的各个发光点发射的各个光束的光路，以发射 各光束的光路与光轴匹配，并使发散角变更元件沿光轴方向移动，以补偿在壳体内发生的各个光通量之间的光程差。 版权所有（C）2005，JPO＆NCIPI

公开(公告)号：JP2004326861A

公开(公告)日：2004-11-18

申请号：JP2003117190

申请日：2003-04-22

Applicant: Konica Minolta Opto Inc ,  コニカミノルタオプト株式会社

Inventor： ARAI NORIKAZU ,  SAITO SHINICHIRO

IPC: G02B13/00 ,  G02B13/18 ,  G02B27/44 ,  G11B7/00 ,  G11B7/125 ,  G11B7/135

CPC classification number: G11B7/1353 ,  G02B27/4283 ,  G11B7/1275 ,  G11B7/1374 ,  G11B7/13922 ,  G11B2007/0006

Abstract: PROBLEM TO BE SOLVED: To provide an objective optical element, an optical pickup device and optical information recording/reproducing device that can suppress the spherical aberration while maintaining the compatibility with AOD and another optical recording medium. SOLUTION: This objective optical element is used in an optical pick up to record/reproduce information on various information recording media by focusing the light flux of the wavelength λ1 (640 nm≤λ1≤670 nm) on the information recording surface of a first optical information recording medium which has a protective plate with thickness of t1 (t1=0.6 mm), and focusing the light flux of the wavelength λ2 (400 nm≤λ2≤415 nm) on the information recording surface of a second optical information recording medium which has a protective plate with thickness of t2 (t2=0.6 mm). Further, the optical system magnification m2 for the light flux of the wavelength λ2 satisfies ¾m2¾ COPYRIGHT: (C)2005,JPO&NCIPI

公开(公告)号：JP2005353261A

公开(公告)日：2005-12-22

申请号：JP2005136168

申请日：2005-05-09

Applicant: Konica Minolta Opto Inc ,  コニカミノルタオプト株式会社

Inventor： HASHIMURA JUNJI ,  SAITO SHINICHIRO ,  KIMURA TORU

IPC: G11B7/135

Abstract: PROBLEM TO BE SOLVED: To provide an optical pickup device mounted with an objective optical element for appropriately recording and/or reproducing information on and/or from four kinds of disks having different recording density including high-density optical disks of two types of standards, DVDs and CDs, having different thicknesses in a protective substrate. SOLUTION: An objective optical element OBJ1 specialized for a first optical disk and that OBJ2 specialized for a second optical disk are separately arranged. As a result, even if the thickness in the protective substrate differs, information can be appropriately recorded and/or reproduced to and/or from any of the optical disks by performing an optimum objective optical element design. COPYRIGHT: (C)2006,JPO&NCIPI

Abstract translation: 要解决的问题：提供一种安装有物镜光学元件的光学拾取装置，用于在具有不同记录密度的四种盘中适当地记录和/或再现信息，包括两种类型的高密度光盘 的标准，DVD和CD，在保护性基板中具有不同的厚度。 解决方案：专门用于第一光盘的物镜光学元件OBJ1和专用于第二光盘的OBJ2被分开布置。 结果，即使保护基板的厚度不同，也可以通过进行最佳的物镜光学元件设计来适当地记录和/或再现任何光盘的信息。 版权所有（C）2006，JPO＆NCIPI