公开(公告)号：US5424870A

公开(公告)日：1995-06-13

申请号：US979468

申请日：1992-11-20

Applicant: Junji Hashimura ,  Takashi Okada ,  Tetsuo Kohno

Inventor： Junji Hashimura ,  Takashi Okada ,  Tetsuo Kohno

IPC: G02B15/167 ,  G02B15/14

CPC classification number: G02B15/167

Abstract: A compact zoom lens system comprises, from the object side, a first lens component of a positive refractive power, a second lens component of a positive refractive power, and a third lens component of a negative refractive power. The first lens component has at least one aspherical surface. There are variable air spaces between the first and second lens components and between the second and third lens components.

Abstract translation: 紧凑型变焦透镜系统包括：物体侧具有正屈光力的第一透镜分量，正折光力的第二透镜分量和负折光力的第三透镜分量。 第一透镜部件具有至少一个非球面。 在第一和第二透镜部件之间以及第二和第三透镜部件之间存在可变空气空间。

公开(公告)号：US07668066B2

公开(公告)日：2010-02-23

申请号：US11663299

申请日：2006-11-06

Applicant: Yuichi Atarashi ,  Kohei Ota ,  Junji Hashimura ,  Kiyono Ikenaka

Inventor： Yuichi Atarashi ,  Kohei Ota ,  Junji Hashimura ,  Kiyono Ikenaka

IPC: G11B7/00

CPC classification number: G11B7/1374 ,  G11B7/1275 ,  G11B7/1353 ,  G11B7/1356 ,  G11B7/1365 ,  G11B7/1369 ,  G11B7/1378 ,  G11B7/13922 ,  G11B7/13925 ,  G11B7/1398 ,  G11B2007/0006

Abstract: An optical pickup apparatus for information recording and/or reproduction on different optical information recording media with compatibility among these media, the optical surface of a first objective lens and the optical surface of a second objective lens are formed only of a refractive surface. The second objective lens is used in common for the first light flux with a wavelength of λ1 and the second light flux with a wavelength of λ2, but in the case where the protective substrate t2 of the second optical information recording medium and the protective substrate t3 of the third optical information recording medium are the same, it is not necessary to take the difference in thickness of the protective substrate into consideration. Chromatic aberration based on the difference in wavelength between the first light flux and the second light flux can be corrected by displacing the second coupling lens.

Abstract translation: 用于在这些介质之间具有兼容性的不同光学信息记录介质上的信息记录和/或再现的光学拾取装置，第一物镜的光学表面和第二物镜的光学表面仅由折射表面形成。 对于波长为λ1的第一光束和波长为λ2的第二光束，第二物镜共同使用，但是在第二光信息记录介质的保护基板t2和保护基板t3的情况下 第三光信息记录介质的厚度相同时，不需要考虑保护基板的厚度差。 可以通过移动第二耦合透镜来校正基于第一光束和第二光束之间的波长差的色像差。

公开(公告)号：US07593307B2

公开(公告)日：2009-09-22

申请号：US11100389

申请日：2005-04-07

Applicant: Tohru Kimura ,  Junji Hashimura ,  Yuichi Atarashi ,  Toshiyuki Kojima

Inventor： Tohru Kimura ,  Junji Hashimura ,  Yuichi Atarashi ,  Toshiyuki Kojima

IPC: G11B7/00

CPC classification number: G11B7/1374 ,  G11B7/1378 ,  G11B2007/0006 ,  G11B2007/13727

Abstract: An objective lens system for an optical pickup apparatus, includes in order from an object side: a first lens group having negative paraxial power P1 (mm−1); and a second lens group having positive paraxial power P2 (mm−1) for converging a light flux emitted from the first lens group on an information recording surface of an optical information recording medium.

Abstract translation: 一种用于光学拾取装置的物镜系统，从物体侧依次包括具有负近轴功率P1（mm-1）的第一透镜组; 以及具有正的近轴光焦度P2（mm-1）的第二透镜组，用于将从第一透镜组发射的光束会聚在光学信息记录介质的信息记录表面上。

公开(公告)号：US20060203692A1

公开(公告)日：2006-09-14

申请号：US11366546

申请日：2006-03-03

Applicant: Kohei Ota ,  Nobuyoshi Mori ,  Junji Hashimura ,  Tohru Kimura ,  Kiyono Ikenaka ,  Katsuya Sakamoto ,  Eiji Nomura

Inventor： Kohei Ota ,  Nobuyoshi Mori ,  Junji Hashimura ,  Tohru Kimura ,  Kiyono Ikenaka ,  Katsuya Sakamoto ,  Eiji Nomura

IPC: G11B7/00

CPC classification number: G11B7/1367 ,  G11B7/1275 ,  G11B7/1353 ,  G11B7/1374 ,  G11B7/13922 ,  G11B2007/0006

Abstract: An optical pickup apparatus includes: a first light source for emitting a first light flux; a second light source for emitting a second light flux; a third light source for emitting a third light flux; and an objective optical unit having a first optical path difference providing structure and a second optical path difference providing structure. Magnifications of the objective optical unit for the first-third light fluxes have almost same value. The first optical path difference providing structure provides a predefined optical path difference and changes a spherical aberration to be one of under-correction and over-correction for all of the first light flux, the second light flux, and the third light flux. The second optical path difference providing structure provides a predefined optical path difference and changes a spherical aberration to be the other of under-correction and over-correction of the spherical aberration only for the second light flux.

Abstract translation: 一种光学拾取装置包括：用于发射第一光通量的第一光源; 用于发射第二光通量的第二光源; 用于发射第三光通量的第三光源; 以及具有第一光程差提供结构和第二光程差提供结构的物镜光学单元。 用于第一至第三光束的物镜光学单元的放大率具有几乎相同的值。 第一光程差提供结构提供预定的光程差，并且将球面像差改变为对于所有第一光通量，第二光通量和第三光通量的校正和过校正之一。 第二光程差提供结构提供预定的光程差，并且将球面像差改变为仅用于第二光通量的球面像差的校正不足和过校正。

公开(公告)号：US20060120251A1

公开(公告)日：2006-06-08

申请号：US10532602

申请日：2004-08-10

Applicant: Katsuya Sakamoto ,  Junji Hashimura

Inventor： Katsuya Sakamoto ,  Junji Hashimura

IPC: G11B7/00

CPC classification number: G11B7/1398 ,  G02B7/028 ,  G02B27/0966 ,  G11B7/1378 ,  G11B7/13922 ,  G11B2007/13727

Abstract: The present invention has a beam shaping element for converting the light source 11 into a light flux whose emitting angle is almost equal and for projecting it, and a generation amount of the astigmatism generated by the temperature change is suppressed by a linear expansion of the beam shaping element.

Abstract translation: 本发明具有用于将光源11转换为发射角几乎相等并用于投射光束的光束成形元件，并且通过光束的线性膨胀来抑制由温度变化产生的像散的产生量 成型元件。

公开(公告)号：US20060109771A1

公开(公告)日：2006-05-25

申请号：US11273087

申请日：2005-11-15

Applicant: Yuichi Atarashi ,  Mika Wachi ,  Junji Hashimura

Inventor： Yuichi Atarashi ,  Mika Wachi ,  Junji Hashimura

IPC: G11B7/00

CPC classification number: G11B7/1395 ,  G11B7/127 ,  G11B7/1376 ,  G11B2007/0006

Abstract: An optical pickup device, including: first, second and third light sources performing recording and/or reproduction of information for information recording surfaces of first, second and third optical information recording medium each having a protective substrate with a thickness t1, t2 and t3, respectively; a first objective optical system for guiding at least the first beam to the information recording surface of first optical information recording medium; second objective optical system provided separately from the first objective optical system, for guiding at least the third beam to information recording surface of the third optical information recording medium; and at least one light receiving element for detecting light reflected on the information recording surfaces of the first to third optical information recording media.

Abstract translation: 一种光学拾取装置，包括：第一，第二和第三光源，用于执行记录和/或再现用于信息记录表面的信息，所述信息记录表面具有第一，第二和第三光学信息记录介质，每个具有厚度为t 1，t 2的保护基板， t 3; 用于将至少第一光束引导到第一光学信息记录介质的信息记录表面的第一物镜光学系统; 与第一物镜光学系统分开设置的用于将至少第三光束引导到第三光学信息记录介质的信息记录表面的第二物镜光学系统; 以及用于检测在第一至第三光学信息记录介质的信息记录表面上反射的光的至少一个光接收元件。

公开(公告)号：US20050180294A1

公开(公告)日：2005-08-18

申请号：US11049948

申请日：2005-02-04

Applicant: Tohru Kimura ,  Nobuyoshi Mori ,  Junji Hashimura ,  Yuichi Atarashi ,  Toshiyuki Kojima ,  Kiyono Ikenaka ,  Mitsuru Mimori

Inventor： Tohru Kimura ,  Nobuyoshi Mori ,  Junji Hashimura ,  Yuichi Atarashi ,  Toshiyuki Kojima ,  Kiyono Ikenaka ,  Mitsuru Mimori

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

CPC classification number: G11B7/13925 ,  G11B7/1275 ,  G11B7/1356 ,  G11B7/1367 ,  G11B7/1369 ,  G11B7/1374 ,  G11B7/1378 ,  G11B7/13922 ,  G11B11/10532 ,  G11B2007/0006

Abstract: An optical pickup apparatus comprising: a first, second and third light sources emitting first, second and third light flux having first wavelength of λ1, second wavelength of λ2 and third wavelength of λ3, respectively; and an objective optical system converging the first, second and third light fluxes onto an information recording surface of a first, second and third optical disk, respectively, wherein the objective optical system has a phase structure, and wherein when a first, second and third magnifications of the objective optical system for conducting reproducing information from and/or recording information on the first, second and third optical disks are represented by M1, M2, and M3, respectively, |dM1−M2|, which represents an absolute value of a difference between M1 and M2, satisfies the following relation. |dM1−M2|

Abstract translation: 一种光学拾取装置，包括：第一，第二和第三光源，分别发射具有λ1的第一波长，λ2的第二波长和λ3的第三波长的第一，第二和第三光束; 以及物镜光学系统，其将所述第一，第二和第三光束分别聚焦到第一，第二和第三光盘的信息记录表面上，其中所述物镜光学系统具有相位结构，并且其中当第一，第二和第三光束 用于从第一，第二和第三光盘进行再现信息和/或记录信息的物镜光学系统的放大率分别由M1，M2和M3分别表示为M1，M2和M3。 ，其表示M1和M2之间的差的绝对值，满足以下关系。 <？in-line-formula description =“In-line Formulas”end =“lead”？> | d M1-M2 <0.02 <？in-line-formula description =“In-line 公式“end =”tail“？>

公开(公告)号：US06624951B2

公开(公告)日：2003-09-23

申请号：US10163333

申请日：2002-06-05

Applicant: Junji Hashimura ,  Kyu Takada ,  Hideki Nagata

Inventor： Junji Hashimura ,  Kyu Takada ,  Hideki Nagata

IPC: G02B1318

CPC classification number: G11B7/1374 ,  G11B2007/13727

Abstract: An objective lens system for optical pickups performing at least one of reading and writing of information by condensing a luminous flux from a light source on an information recording medium, has the following two lens elements from a light source side: a first lens element having a first surface convex to the light source side and a second surface convex to the light source side; and a second lens element having a third surface convex to the light source side and a plane fourth surface, wherein the first surface is an aspherical surface.

Abstract translation: 用于通过将来自光源的光通量聚集在信息记录介质上的读取和写入信息中的至少一个的光学拾取器的物镜系统具有来自光源侧的以下两个透镜元件：第一透镜元件，具有 第一表面凸起到光源侧，第二表面凸起到光源侧; 以及第二透镜元件，其具有对光源侧凸出的第三表面和平面第四表面，其中所述第一表面是非球面。

公开(公告)号：US06384985B1

公开(公告)日：2002-05-07

申请号：US09157416

申请日：1998-09-21

Applicant: Junji Hashimura

Inventor： Junji Hashimura

IPC: G02B1514

CPC classification number: G02B15/173

Abstract: A zoom lens system has a first lens unit having a positive optical power, a second lens unit having a negative optical power, a third lens unit, and a fourth lens unit. In this zoom lens system, a zooming operation is performed by varying distances between the first, second, third, and fourth lens units, and the following condition is fulfilled: 0.4

Abstract translation: 变焦透镜系统具有正光焦度的第一透镜单元，具有负光焦度的第二透镜单元，第三透镜​​单元和第四透镜单元。 在该变焦透镜系统中，通过改变第一，第二，第三和第四透镜单元之间的距离来执行变焦操作，并且满足以下条件：其中，图2表示第二透镜单元的光焦度; 而且，phi phi W W W W。。。。。。。。。。。。。。。。。。

公开(公告)号：US5633763A

公开(公告)日：1997-05-27

申请号：US499002

申请日：1995-07-06

Applicant: Shinichi Suzuki ,  Tetsuro Kanbara ,  Minoru Kuwana ,  Hitoshi Hagimori ,  Junji Hashimura

Inventor： Shinichi Suzuki ,  Tetsuro Kanbara ,  Minoru Kuwana ,  Hitoshi Hagimori ,  Junji Hashimura

IPC: G02B7/04 ,  G02B7/10 ,  H02N2/00 ,  G02B7/02

CPC classification number: G02B7/102

Abstract: An apparatus for driving a collapsible lens mount having several telescoping segments includes, for each movable segment, a transducer that expands and contracts responsive to a wave pulse and a drive shaft coupled to the transducer. By varying the wave pulse conditions, the expansion and contraction are made to occur at different rates. A coupling member on each segment frictionally engages the drive shaft and transmits movement of the drive shaft during relatively slow drive shaft movements to the lens segment. The apparatus may also include a lens hood driven by the transducer and drive shaft apparatus of the invention.

Abstract translation: 用于驱动具有多个伸缩段的可折叠透镜座的装置包括针对每个可移动段的响应于波脉冲而膨胀和收缩的换能器以及耦合到换能器的驱动轴。 通过改变波形脉冲条件，使扩张和收缩以不同的速率发生。 每个区段上的联接构件摩擦地接合驱动轴并且在相对较慢的驱动轴运动期间将驱动轴的运动传递到透镜段。 该装置还可以包括由本发明的换能器和驱动轴装置驱动的透镜罩。