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1. 发明专利

DE10027167B4 未知
公开(公告)号：DE10027167B4
公开(公告)日：2007-03-22
申请号：DE10027167
申请日：2000-05-31
申请人： PENTAX CORP
发明人： ITO EIICHI , KOREEDA DAISUKE , TACHIHARA SATORU
IPC分类号： G02B21/22 , A61B1/04 , G02B21/00 , G02B21/06 , G02B27/00
摘要： The optical system of the microscope includes a close-up optical system that faces an object, a pair of imaging optical systems that take object light rays passing through regions of the close-up optical system, and an illuminating optical system that guides illumination light emitted from a light source to illuminate the object. Each lens included in the close-up optical system has a semicircular shape in which one side is cut out. The close-up optical system is held in a first lens barrel, and the illuminating optical system is held in a second lens barrel. The second lens barrel is arranged in the cutout space of the close-up optical system inside the first lens barrel. A light shielding member is attached to the second lens barrel to prevent a leak of the illumination light through grooves formed on the second lens barrel.

2. 发明专利

DE10027166B4 未知
公开(公告)号：DE10027166B4
公开(公告)日：2007-03-08
申请号：DE10027166
申请日：2000-05-31
申请人： PENTAX CORP
发明人： TACHIHARA SATORU , TANAKA CHINARI , KOREEDA DAISUKE , NAKAMURA TETSUYA , MINEFUJI NOBUTAKA , SEKIYA TAKAOMI , ITO EIICHI
IPC分类号： G02B21/22 , A61B1/04
摘要： The stereoscopic microscope includes a common close-up optical system that faces an object, a pair of zoom optical systems that form a pair of primary image, a pair of field stops, a pair of relay optical systems that relay the primary images to form a pair of secondary images, an inter-axis distance reducing element, an image taking device and an illuminating optical system. The object light rays incident on the close-up optical system form the primary images having predetermined parallax at the field stops through the zoom optical systems. The inter-axis distance reducing element reduces the inter-axis distance of the right and left light rays. The primary images are re-imaged by the relay optical systems as the secondary images on the adjacent regions on the single image taking surface of the image taking device, respectively.

3. 发明专利

DE102005057512A1 未知
公开(公告)号：DE102005057512A1
公开(公告)日：2006-06-08
申请号：DE102005057512
申请日：2005-12-01
申请人： PENTAX CORP
发明人： MARUYAMA KOICHI , TASHIRO YOSHIYUKI , KOREEDA DAISUKE
IPC分类号： G02B13/00 , G11B7/135
摘要： A method of designing an optical element to be used for an optical system in which each of a plurality of light beams having different design wavelengths passes through the optical element is provided. The method includes determining at least two types of optical path difference functions including first and second optical path difference functions in such a manner that proportion, brought by the first optical path difference function, between diffraction orders at which diffraction efficiencies of the plurality of light beams are maximized is different from proportion, brought by the second optical path difference function, between diffraction orders at which diffraction efficiencies of the plurality of light beams are maximized, and obtaining a shape defined by combining the at least two types of optical path difference functions so as to apply the obtained shape to at least one surface of surfaces of the optical element.

4. 发明专利

JP2005209250A Optical pickup device and objective lens for optical pickup 有权
标题翻译：光学拾取器件和用于光学拾取的目标镜头
公开(公告)号：JP2005209250A
公开(公告)日：2005-08-04
申请号：JP2004012236
申请日：2004-01-20
申请人： Pentax Corp , ペンタックス株式会社
发明人： KOREEDA DAISUKE , MARUYAMA KOICHI
IPC分类号： G02B13/00 , G02B13/18 , G11B7/00 , G11B7/125 , G11B7/135
CPC分类号： G11B7/1353 , G11B7/1275 , G11B7/1374 , G11B2007/0006
摘要： PROBLEM TO BE SOLVED: To provide an optical pickup device capable of forming a good spot by suppressing spherical aberration and off-axis aberration even in recording/reproduction of information on an existing optical disk or a new standard optical disk. SOLUTION: The optical pickup device records or reproduces information on a plurality of optical disks by separately using three kinds of luminous fluxes. An objective lens is arranged so that converged light is made incident on the objective lens for the luminous flux of a first wavelength and divergent light is made incident thereon for the luminous fluxes of second and third wavelengths. The relations of m1>0 and m3 COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：要解决的问题：提供一种即使在现有光盘或新标准光盘上的信息的记录/再现中也能够抑制球面像差和离轴像差而能够形成良好光斑的光学拾取装置。解决方案：光拾取装置通过分开使用三种光通量在多个光盘上记录或再现信息。物镜设置为使得会聚的光入射到物镜上用于第一波长的光束，并且发散光被入射到其上用于第二和第三波长的光通量。设置m1> 0和m3

5. 发明专利

JP2004247034A Optical pickup system 审中-公开
公开(公告)号：JP2004247034A
公开(公告)日：2004-09-02
申请号：JP2004012235
申请日：2004-01-20
申请人： Pentax Corp , ペンタックス株式会社
发明人： TAKEUCHI SHUICHI , MARUYAMA KOICHI , KOREEDA DAISUKE
IPC分类号： G11B7/135
摘要： PROBLEM TO BE SOLVED: To provide an optical pickup system having compatibility to a plurality of optical disks different in standard of protective layer thickness, and a large operation distance and good aberration characteristics even when a disk protective layer thickness is applied to a relatively thick disk. SOLUTION: In an optical disk objective lens, at least when information is recorded or reproduced to/from a first optical disk, a luminous flux emitted from one of a plurality of light sources and made incident through a coupling lens on the objective lens is a dispersed light having spherical aberration. The spherical aberration of the entire system is corrected by the spherical aberration of the dispersed light and spherical aberrations generated on the objective lens and the disk protective layer, and the coma aberration of the entire system when the objective lens is shifted is corrected by a coma aberration component caused by the spherical aberration of the coupling lens and coma aberration components generated on the object lens and the disk protective layer. COPYRIGHT: (C)2004,JPO&NCIPI

6. 发明专利

JP2007122851A Optical information recording and reproducing device and objective lens for same 有权
标题翻译：光信息记录和再现设备和目标镜头
公开(公告)号：JP2007122851A
公开(公告)日：2007-05-17
申请号：JP2006260486
申请日：2006-09-26
申请人： Pentax Corp , ペンタックス株式会社
发明人： KOREEDA DAISUKE , MARUYAMA KOICHI , TAKEUCHI SHUICHI , TASHIRO YOSHIYUKI
IPC分类号： G11B7/135
摘要： PROBLEM TO BE SOLVED: To provide an optical information recording/reproduction device capable of suppressing spherical aberration for each of three types of optical discs and preventing deterioration of focusing performance when a lower recording density optical disc is used. SOLUTION: The optical information recording and reproducing device having compatibility with a plurality of optical discs comprises an objective lens. At least one surface of the objective lens has a step structure which is divided into a plurality of concentric refraction surface and gives an optical path length difference to an incident beam at each step. When the third laser beam passes through the objective lens, the objective lens produces normal diffraction order light and undesired diffraction order light. A distance from a point to which the normal diffraction order light converges to a point to which the undesired diffraction order light converges is larger than or equal to twice a pull-in range of a focus error signal obtained when the third optical disc is used. COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：要解决的问题：提供一种能够抑制三种类型的光盘中的每一种的球面像差的光信息记录/再现装置，并且当使用下记录密度光盘时，防止聚焦性能的劣化。＆lt; P＆gt;解决方案：具有与多个光盘兼容的光学信息记录和再现装置包括物镜。物镜的至少一个表面具有台阶结构，其被分成多个同心折射表面，并且在每个步骤给出与入射光束的光程长度差。当第三激光束通过物镜时，物镜产生正常的衍射级光和不期望的衍射级光。从法线衍射级光收敛到不期望的衍射级光会聚的点的距离大于或等于当使用第三光盘时获得的聚焦误差信号的拉入范围的两倍。版权所有（C）2007，JPO＆INPIT

7. 发明专利

JP2006252751A Optical pickup optical system, objective lens, and optical pickup device 有权
标题翻译：光学拾取光学系统，目标镜头和光学拾取器件
公开(公告)号：JP2006252751A
公开(公告)日：2006-09-21
申请号：JP2006033650
申请日：2006-02-10
申请人： Pentax Corp , ペンタックス株式会社
发明人： KOREEDA DAISUKE , MARUYAMA KOICHI , TAKEUCHI SHUICHI
IPC分类号： G11B7/135 , G02B13/00 , G02B13/18 , G11B7/125
摘要： PROBLEM TO BE SOLVED: To provide an optical pickup optical system which forms a good spot by preventing decrease in diffraction efficiency, and suppresses the change of spherical aberration resulting from minute change of a laser beam, in order to establish compatibility to an existing optical disk or a new standard optical disk, when a diffraction structure is used. SOLUTION: This optical pickup optical system 10 has compatibility at least in two kinds of optical disks of which the specification differs, and has at least an optical element 11 which has a phase shift surface on one surface. The phase shift surface 11a has a first region 11ai which focuses each laser beam on a recording surface of a corresponding optical disk. The region has at least one ring zone structure having a ring zone group of which the amount of optical path length addition to a first laser beam when a refraction surface located inside is made reference is almost that of two wave lengths, and a return level difference section of which the amount of optical path length addition to the first laser beam when the refraction surface located inside is made reference is that of almost three wave lengths in the opposite direction to a level difference of the ring zone group. COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：要解决的问题：为了提供通过防止衍射效率降低而形成良好光斑的光学拾取光学系统，并且抑制由于激光束的微小变化引起的球面像差的变化，以便建立与现有的光盘或新的标准光盘，当使用衍射结构时。解决方案：该光学拾取光学系统10具有至少在规格不同的两种光盘中具有兼容性，并且至少具有在一个表面上具有相移表面的光学元件11。相移表面11a具有将每个激光束聚焦在对应的光盘的记录表面上的第一区域11ai。该区域具有至少一个环带结构，其具有环带组，当作为参考的位于内部的折射面时，添加到第一激光束的光路长度的量几乎是两个波长，并且返回电平差作为参考，当参考位于内部的折射表面时添加到第一激光束的光程长度的部分是与环带组的电平差相反的方向的三个波长。版权所有（C）2006，JPO＆NCIPI

8. 发明专利

JP2004191967A Scanning optical system and printer 有权
标题翻译：扫描光学系统和打印机
公开(公告)号：JP2004191967A
公开(公告)日：2004-07-08
申请号：JP2003400565
申请日：2003-11-28
申请人： Pentax Corp , ペンタックス株式会社
发明人： TAKEUCHI SHUICHI , KOREEDA DAISUKE
IPC分类号： B41J2/44 , G02B13/18 , G02B26/10 , H04N1/036 , H04N1/113
摘要： PROBLEM TO BE SOLVED: To provide a scanning optical system and a printer in which a side lobe exceeding a threshold is suppressed as much as possible even when a microscopic waviness exists on the optical face of an image formation optical system.
SOLUTION: A scanning optical system is so composed that a collimate lens 3, which has a first region 3b which acts to give a predetermined phase difference to a part of a luminous flux other than the luminous flux which passes through the beam axis and its vicinity of a laser beam on an optical face on the emitting side, is arranged on the optical path of the laser beam between a laser light source 1 and a polygon mirror 6. Further, a laser beam printer in which such a scanning optical system is included is composed.
COPYRIGHT: (C)2004,JPO&NCIPI
摘要翻译：要解决的问题：即使在成像光学系统的光学面上存在微小的波纹的情况下，也能够尽可能地抑制超过阈值的旁瓣的扫描光学系统和打印机。解决方案：扫描光学系统被构成为具有第一区域3b的准直透镜3，该第一区域3b用于对通过光束轴线的光束以外的光束的一部分赋予预定的相位差并且其在发射侧的光学面上的激光束的附近被布置在激光束在激光光源1和多面镜6之间的光路上。此外，激光束打印机，其中这种扫描光学系统包括组成。版权所有（C）2004，JPO＆NCIPI

9. 发明专利

JP2004118182A Scanning optical system and printer 有权
标题翻译：扫描光学系统和打印机
公开(公告)号：JP2004118182A
公开(公告)日：2004-04-15
申请号：JP2003308329
申请日：2003-09-01
申请人： Pentax Corp , ペンタックス株式会社
发明人： TAKEUCHI SHUICHI , KOREEDA DAISUKE
IPC分类号： B41J2/44 , G02B26/10 , H04N1/113
摘要： PROBLEM TO BE SOLVED: To provide a scanning optical system and a printer which suppress excess of a side lobe over a threshold as much as possible even in the case of the existence of microscopic waviness on an optical surface of an imaging optical system.
SOLUTION: The scanning optical system is so constituted that a phase shift element 3 having a first area 3b which acts so as to give a phase difference of π[rad] to a part of a luminous flux other than a luminous flux on a beam center axis and luminous fluxes near the beam center axis of a laser beam is arranged on an optical path of the laser beam from a laser light source 1 to a polygon mirror 6. A laser beam printer is so constituted that this scanning optical system is incorporated.
COPYRIGHT: (C)2004,JPO
摘要翻译：要解决的问题：为了提供一种扫描光学系统和打印机，即使在成像光学系统的光学表面上存在微小的波纹的情况下，也尽可能地抑制超过阈值的过大的旁瓣。解决方案：扫描光学系统被构造成具有第一区域3b的相移元件3，该第一区域3b用于使得相对于除光通量以外的光通量的一部分具有π[rad]的相位差在从激光光源1到多面镜6的激光束的光路上配置有光束中心轴和激光束的光束中心轴附近的光束。激光束打印机的构成是，该扫描光学系统被纳入。版权所有（C）2004，JPO

10. 发明专利

JP2003005114A Scanning optical system 有权
标题翻译：扫描光学系统
公开(公告)号：JP2003005114A
公开(公告)日：2003-01-08
申请号：JP2001186888
申请日：2001-06-20
申请人： Pentax Corp , ペンタックス株式会社
发明人： IIZUKA TAKAYUKI , KOREEDA DAISUKE
IPC分类号： B41J2/44 , G02B13/00 , G02B13/08 , G02B13/18 , G02B26/10 , G02B26/12 , H04N1/113
CPC分类号： G02B26/123
摘要： PROBLEM TO BE SOLVED: To provide a scanning optical system in which an inexpensive lens group is used for the lens group to which is arranged shifted in the sub scanning direction with respect to a laser luminous flux despite having a constitution that a plurality of laser luminous fluxes made incident on a rotating polygon mirror are tilted with respect to the plane perpendicular to the axis thereof. SOLUTION: The scanning optical system has a polygon mirror 5 for simultaneously deflecting four laser luminous fluxes L1 through L4 which are made incident on a reflecting face two fluxed from each of both sides of a main scanning plane P1, and an image formation optical system 10 composed of a front side lens group 11 on which all laser luminous fluxes L1 through L4 deflected with the polygon mirror are made incident, and a rear side lens group of four lenses 12y, 12m, 12c and 12b on which four laser luminous fluxes passing through the front side lens group 11 are made incident respectively. A pair of the lenses 12m and 12c of the rear side lens group located at near side of the main scanning plane P1 are formed in the same form to each other and arranged opposite to each other in a state that the lenses are turned by 180 deg. and a pair of the lenses 12y and 12b of the rear side group located at remote side of the main scanning plane P1 are formed in the same form to each other and arranged opposite to each other in a state that the lenses are turned by 180 deg..
摘要翻译：要解决的问题：为了提供一种扫描光学系统，其中使用廉价的透镜组用于相对于激光光束在副扫描方向上排列的透镜组，尽管具有多个激光发光入射在旋转多面镜上的焊剂相对于垂直于其轴线的平面倾斜。解决方案：扫描光学系统具有多面镜5，用于同时偏转四个激光光束L1至L4，入射到主扫描平面P1的两侧各自的两个反射面上的成像光学系统10 由多个反射镜偏转的所有激光光束L1至L4入射的前侧透镜组11和四个透镜12y，12m，12c和12b的后侧透镜组，其中四个激光光束通过前侧透镜组11分别入射。位于主扫描平面P1的近侧的后侧透镜组的一对透镜12m和12c以彼此相同的形状形成，并且在透镜旋转180度的状态下彼此相对布置。并且位于主扫描平面P1的远侧的后侧组的一对透镜12y和12b以彼此相同的形状形成并且在透镜被转动180度的状态下彼此相对布置 .. ..

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