公开(公告)号：JP2005322301A

公开(公告)日：2005-11-17

申请号：JP2004138635

申请日：2004-05-07

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

Inventor： KIMURA TORU ,  SAKAMOTO KATSUYA

IPC: G02B5/18 ,  G11B7/00 ,  G11B7/135

CPC classification number: G11B7/13922 ,  G11B7/1353 ,  G11B7/1369 ,  G11B7/139 ,  G11B2007/0006

Abstract: PROBLEM TO BE SOLVED: To provide an optical pickup device that can record and/or reproduce information appropriately to three types of different optical disks and can be miniaturized, and to provided a drive device in an optical disk, an objective lens system used for the drive device, and a wavelength selection element. SOLUTION: In the wavelength selection element for limiting an opening corresponding to the NA of a CD used for the optical pickup device compatible with a high-density optical disk, a DVD, and a CD, a phase structure for correcting spherical aberration caused by the difference in a protective layer thickness is formed at a first region including an optical axis, and a light-shielding structure for limiting the opening corresponding to the NA of the CD is formed outside the first region, thus recording and/or reproducing information appropriately to different types of optical disks. COPYRIGHT: (C)2006,JPO&NCIPI

Abstract translation: 要解决的问题：提供一种可以适当地记录和/或再现信息到三种不同光盘并可小型化的光学拾取装置，并且在光盘中设置驱动装置，物镜系统 用于驱动装置和波长选择元件。 解决方案：在用于限制与用于与高密度光盘，DVD和CD兼容的光学拾取装置的CD的NA相对应的开口的波长选择元件中，用于校正球面像差的相位结构 在包括光轴的第一区域处形成由保护层厚度差异引起的光屏蔽结构，并且在第一区域的外部形成用于限制对应于CD的NA的开口的遮光结构，从而记录和/或再现 信息适当地适用于不同类型的光盘。 版权所有（C）2006，JPO＆NCIPI

公开(公告)号：JP2006252602A

公开(公告)日：2006-09-21

申请号：JP2005064155

申请日：2005-03-08

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

Inventor： OTA KOHEI ,  HASHIMURA JUNJI ,  KIMURA TORU ,  IKENAKA SEINO ,  SAKAMOTO KATSUYA ,  MORI NOBUYOSHI ,  NOMURA EIJI

IPC: G11B7/135

Abstract: PROBLEM TO BE SOLVED: To provide an optical pickup apparatus which is compact but can perform the good recording and/or reproducing of information to an optical information recording medium being a different kind, and an objective optical element used for it. SOLUTION: Luminous fluxes of respective wavelengths λ1, λ2 and λ3 emitted from a purple-blue semiconductor laser LD1, a red semiconductor laser EP1, further, an ultraviolet semiconductor laser EP2 are made incident on a single lens objective optical element OBj as parallel luminous fluxes, spherical aberration is corrected low only for a non-spherical optical surface, but spherical aberration is corrected appropriately by passing through optical path difference grant structure, the recording and/or reproducing of information can be performed appropriately to respective recording media having thicknesses of protection layers t1, t2 and t3. Then, the luminous flux made incident on an objective lens from each light source satisfies respectively the prescribed magnification conditions, also the objective lens has ring band structure composed of at least two regions. COPYRIGHT: (C)2006,JPO&NCIPI

Abstract translation: 要解决的问题：提供一种紧凑的光拾取装置，但是可以对不同种类的光学信息记录介质和用于其的物镜光学元件执行信息的良好记录和/或再现。 解决方案：从紫色 - 蓝色半导体激光器LD1，红色半导体激光器EP1以及紫外线半导体激光器EP2发出的各波长λ1，λ2和λ3的光通量入射到单个透镜物镜光学元件OBj上，作为 平行光通量，球面像差仅对于非球面光学表面校正为低，但是通过通过光程差授予结构适当地校正球面像差，可以适当地执行信息的记录和/或再现以对具有 保护层t1，t2和t3的厚度。 然后，从各光源入射到物镜上的光束分别满足规定的倍率条件，物镜也具有由至少两个区域构成的环带结构。 版权所有（C）2006，JPO＆NCIPI

公开(公告)号：JP2006216090A

公开(公告)日：2006-08-17

申请号：JP2005024922

申请日：2005-02-01

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

Inventor： SAKAMOTO KATSUYA ,  YOSHIDA FUMIAKI

IPC: G11B7/135 ,  G02B1/04

Abstract: PROBLEM TO BE SOLVED: To provide an optical pickup device, wherein recording/reproduction of information can be surely performed to an optical information recording medium and deterioration of an element is reduced, even if irradiation with light is performed over a long time, by making the luminous flux incident in the objective lens to be in a state with the light intensity distribution of the luminous flux emitted from a light source being optimized. SOLUTION: The optical pickup apparatus, performing reproduction and recording of information to the optical information recording medium, has a light intensity distribution converter for converting the luminous flux emitted from the light source and having light intensity distribution that is substantially Gaussian distribution into a luminous flux, having a desired light intensity distribution where the light intensity of emitted light passing through the outermost peripheral part of an effective diameter is 45 to 95% of the light intensity of emitted light, passing through an optical axis position and an objective optical element condensing the luminous flux emitted from the light intensity distribution converter on an information recording surface of the optical information recording medium. The light intensity distribution converter is comprises resin, containing a polymer having an alicyclic structure. COPYRIGHT: (C)2006,JPO&NCIPI

Abstract translation: 要解决的问题：为了提供一种光学拾取装置，其中可以可靠地对光学信息记录介质执行信息的记录/再现，并且即使长时间进行光的照射，元件的劣化也降低 通过使物镜入射的光束成为从光源射出的光束的光强度分布得到优化的状态。 解决方案：对光信息记录介质执行信息再现和记录的光学拾取装置具有一个光强分布转换器，用于将从光源发射的光通量转换成具有基本高斯分布的光强度分布， 具有期望的光强度分布的光通量，其中通过有效直径的最外周部分的发射光的光强度是通过光轴位置的发光的光强度的45至95％，并且物镜光学 元件将从光强度分布变换器发出的光束会聚在光学信息记录介质的信息记录表面上。 光强分布转换器包括含有具有脂环结构的聚合物的树脂。 版权所有（C）2006，JPO＆NCIPI

公开(公告)号：JP2005293775A

公开(公告)日：2005-10-20

申请号：JP2004110448

申请日：2004-04-02

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

Inventor： SHIN YUICHI ,  KIMURA TORU ,  HASHIMURA JUNJI ,  SAKAMOTO KATSUYA ,  YAGI KATSUYA ,  OTA KOHEI

IPC: G11B7/09 ,  G11B7/00 ,  G11B7/125 ,  G11B7/135

CPC classification number: G11B7/13927 ,  G11B7/1275 ,  G11B7/1369 ,  G11B7/1378 ,  G11B2007/0006

Abstract: PROBLEM TO BE SOLVED: To improve a tracking characteristic for, specially, a medium whose protection substrate is thick when an optical pickup device is applied to a plurality of information recording media by using a plurality of wavelengths. SOLUTION: A divergence angle varying element whose two lenses are individually movable along an optical axis is arranged in an optical path and a coma aberration generated when an objective optical element is moved by a tracking means is eliminated by moving one lens to improve the tracking characteristics while a spherical aberration is corrected generated depending upon a disk thickness is corrected by moving the other lens. COPYRIGHT: (C)2006,JPO&NCIPI

Abstract translation: 要解决的问题：为了提高特别是当通过使用多个波长将光学拾取装置应用于多个信息记录介质时保护基板厚的介质的跟踪特性。 解决方案：将两个透镜沿着光轴分别移动的发散角变化元件被布置在光路中，并且当通过跟踪装置移动物镜光学元件时产生的彗差被消除，通过移动一个透镜来改善 通过移动另一个透镜来校正根据盘厚度产生的球面像差校正的跟踪特性。 版权所有（C）2006，JPO＆NCIPI

公开(公告)号：JP2005222612A

公开(公告)日：2005-08-18

申请号：JP2004029233

申请日：2004-02-05

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

Inventor： TOTSUKA HIDEKAZU ,  SAKAMOTO KATSUYA ,  MIMORI MITSURU ,  SHIN YUICHI

IPC: G02B5/18 ,  G02B13/00 ,  G11B7/125 ,  G11B7/135

Abstract: PROBLEM TO BE SOLVED: To provide an objective optical element capable of dealing with an optical media having different substrate thicknesses by using a plurality of wavelengths and also capable of dealing with optical media of not only a single layer but also of a multilayer. SOLUTION: The optical element is divided into a plurality of areas. As for a DVD, the absolute value of a spherical aberration SA of the optical element is increased in proportion to separation from an optical axis, and different codes are assigned for every adjacent area. On the other hand, the absolute value of the aberration is made to be equal to or smaller than a specified value by providing an optical path difference imparting structure to an aperture area required for forming an conversion spot on a CD. COPYRIGHT: (C)2005,JPO&NCIPI

Abstract translation: 要解决的问题：提供一种能够通过使用多个波长处理具有不同基板厚度的光学介质的物镜光学元件，并且还能够处理不仅单层的光学介质，而且还可以处理多层 。 解决方案：光学元件被分成多个区域。 对于DVD，光学元件的球面像差SA的绝对值与从光轴的分离成比例地增加，并且对于每个相邻区域分配不同的代码。 另一方面，通过对在CD上形成转换点所需的开口面提供光程差赋予结构，将像差的绝对值设定为等于或小于规定值。 版权所有（C）2005，JPO＆NCIPI

公开(公告)号：JP2005209325A

公开(公告)日：2005-08-04

申请号：JP2004307803

申请日：2004-10-22

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

Inventor： SAKAMOTO KATSUYA ,  HASHIMURA JUNJI

IPC: G11B7/135 ,  G11B7/125

Abstract: PROBLEM TO BE SOLVED: To provide an optical pickup device capable of dealing with different types of optical recording media. SOLUTION: A first beam splitter BS1 is arranged between a beam shaping element BSL and a collimator lens CL which is an emission angle conversion element, the emission light alone of a first semiconductor laser LD1 which is a blue-violet semiconductor laser is made incident on the beam shaping element BSL to perform beam shaping, and then it is passed through the collimator lens CL to change an emission angle. On the other hand, the light of a second semiconductor laser LD2 which is a red semiconductor laser is reflected by a first beam splitter BS1, and made incident on the collimator lens CL without being passed through the beam shaping element BSL to change an emission angle. That is, as the number of collimator lenses CL is one, and the light alone of the first semiconductor laser LD1 is subjected to beam shaping, high light using efficiency is obtained, and a compact optical pickup device is obtained. COPYRIGHT: (C)2005,JPO&NCIPI

Abstract translation: 要解决的问题：提供能够处理不同类型的光学记录介质的光学拾取装置。 解决方案：第一分束器BS1布置在光束整形元件BSL和作为发射角转换元件的准直透镜CL之间，单独的作为蓝紫色半导体激光器的第一半导体激光器LD1的发射光是 入射到光束整形元件BSL上以进行光束成形，然后通过准直透镜CL以改变发射角。 另一方面，作为红色半导体激光器的第二半导体激光器LD2的光被第一分束器BS1反射，并且入射到准直透镜CL而不通过光束整形元件BSL以改变发射角 。 也就是说，随着准直透镜CL的数量为一个，并且单独的第一半导体激光器LD1的光被进行光束整形，因此获得了高的光利用效率，并且获得了紧凑的光学拾取装置。 版权所有（C）2005，JPO＆NCIPI

公开(公告)号：JP2006323917A

公开(公告)日：2006-11-30

申请号：JP2005145225

申请日：2005-05-18

Applicant: KONICA MINOLTA OPTO INC

Inventor： SAKAMOTO KATSUYA

IPC: G11B7/135

Abstract: PROBLEM TO BE SOLVED: To obtain an objective lens capable of more raising the detection accuracy of detection system of an optical pickup device adopting the objective lens which is constituted of; a 1st region where diffraction structure is formed including an optical axis; a 2nd region where a refraction surface of the outer side of the 1st region is formed; and a 3rd region where diffraction structure of the outer side of the 2nd region is formed. SOLUTION: The objective lens is configured so that 1st and 2nd luminous fluxes which pass the 1st region contribute to the formation of 1st and 2nd condensed spots respectively and the 1st and 2nd luminous fluxes which pass the 2nd region do not contribute to the formation of the 1st and 2nd condensed spots respectively, the 1st luminous flux which passes the 3rd region contributes to the formation of the 1st condensed spot and the 2nd luminous flux which passes the 3rd region does not contribute to the formation of the 2nd condensed spot. COPYRIGHT: (C)2007,JPO&INPIT

公开(公告)号：JP2005209840A

公开(公告)日：2005-08-04

申请号：JP2004014115

申请日：2004-01-22

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

Inventor： SHIN YUICHI ,  KIKUCHI KEISUKE ,  SAKAMOTO KATSUYA ,  KIMURA TORU

IPC: H01S5/022

Abstract: PROBLEM TO BE SOLVED: To provide a semiconductor laser device and an optical pickup device using the same wherein alignment accuracy can easily be secured and enhanced without making an assembling step complicated.
SOLUTION: An optical element 1 is integrally formed in a semiconductor device LD, and a positional relationship between an abutment part 1d and an optical function part 1a can be maintained with good accuracy. Only by abutting the abutment 1d of such the optical element 1 to a base 3, it is possible to easily perform positioning in an optical axis direction between the emission point of a semiconductor laser element 6 and a convex lens 1a.
COPYRIGHT: (C)2005,JPO&NCIPI

Abstract translation: 要解决的问题：提供一种半导体激光装置和使用该半导体激光装置的光拾取装置，其中可以容易地确保和增强对准精度，而不会使组装步骤复杂化。 解决方案：光学元件1整体地形成在半导体器件LD中，并且能够以良好的精度保持邻接部1d和光学功能部1a之间的位置关系。 只有通过将这种光学元件1的基台1d抵接在基座3上，才能够容易地在半导体激光元件6的发光点和凸透镜1a之间沿光轴方向进行定位。 版权所有（C）2005，JPO＆NCIPI