公开(公告)号：US5453962A

公开(公告)日：1995-09-26

申请号：US109724

申请日：1993-08-19

Applicant: Teruo Fujita ,  Morihiro Karaki ,  Mitsuru Irie ,  Kazuhiko Nakane

Inventor： Teruo Fujita ,  Morihiro Karaki ,  Mitsuru Irie ,  Kazuhiko Nakane

IPC: G11B7/007 ,  G11B7/09 ,  G11B7/095 ,  G11B7/13 ,  G11B7/135 ,  G11B7/14 ,  G11B7/22

CPC classification number: G11B7/133 ,  G11B7/00718 ,  G11B7/0908 ,  G11B7/0916 ,  G11B7/0933 ,  G11B7/0935 ,  G11B7/094 ,  G11B7/0948 ,  G11B7/0956 ,  G11B7/1353 ,  G11B7/1381 ,  G11B7/14 ,  G11B7/22 ,  G11B7/0909

Abstract: A focus error detecting device includes a reflected beam splitter and at least two two-division photodetectors. The reflected beam splitter includes a diffraction grating part and a non-diffraction grating part separated by a line dividing a reflected beam. The dividing line projects to a line orthogonal to a guide groove on the information recording medium. The diffraction grating part produces a first split beam, and non-diffraction grating part produces a second split beam. Each two-division photodetector receives one of the first and second split beams incident and their light receiving sections, and produces a signal for effecting focus control.

Abstract translation: 聚焦误差检测装置包括反射分束器和至少两个二分光电检测器。 反射分束器包括由划分反射光束的线分开的衍射光栅部分和非衍射光栅部分。 分割线突出到与信息记录介质上的引导槽正交的线上。 衍射光栅部分产生第一分束，非衍射光栅部分产生第二分束。 每个二分光电检测器接收入射的第一和第二分束光束及其光接收部分中的一个，并产生用于进行聚焦控制的信号。

公开(公告)号：US5416756A

公开(公告)日：1995-05-16

申请号：US971233

申请日：1992-11-04

Applicant: Nobuo Takeshita ,  Hideaki Kobachi ,  Mitsuru Irie ,  Morihiro Karaki

Inventor： Nobuo Takeshita ,  Hideaki Kobachi ,  Mitsuru Irie ,  Morihiro Karaki

IPC: G11B7/085 ,  G11B7/00

CPC classification number: G11B7/08505

Abstract: A lens actuating system for an optical disk drive has an objective lens movably mounted in a movable frame with orthogonal X-, Y-, and Z-axes. A seeking servo moves the frame in the X-direction. A tracking servo moves the objective lens in the X-direction. A focusing servo moves the objective lens in the Z-direction. An optoelectronic sensor detects the relative position of the objective lens and frame in the X-direction, so that the tracking servo can maintain a fixed relative position during track-seeking, or in the Z-direction, to establish a neutral point on the Z-axis for the focusing servo. Force applied by the focusing servo or tracking servo to move the objective lens in one direction can be opposed by an equal and opposite force applied to a driven mass, so that a net zero force is transmitted to the frame.

Abstract translation: 用于光盘驱动器的镜头致动系统具有可移动地安装在具有正交X，Y和Z轴的可移动框架中的物镜。 寻求伺服器在X方向上移动框架。 跟踪伺服在X方向移动物镜。 聚焦伺服将物镜沿Z方向移动。 光电传感器在X方向上检测物镜和镜架的相对位置，使得跟踪伺服器可以在寻轨期间或在Z方向上保持固定的相对位置，以在Z上建立中性点 轴用于聚焦伺服。 通过聚焦伺服或跟踪伺服施加的力在一个方向上移动物镜可以通过施加到从动质量上的相等和相反的力相对，从而净零力传递到框架。

公开(公告)号：US5687032A

公开(公告)日：1997-11-11

申请号：US592178

申请日：1996-01-26

Applicant: Nobuo Takeshita ,  Teruo Fujita ,  Morihiro Karaki ,  Mitsuru Irie ,  Kazuhiko Nakane ,  Kenjiro Kime ,  Hideaki Kobachi

Inventor： Nobuo Takeshita ,  Teruo Fujita ,  Morihiro Karaki ,  Mitsuru Irie ,  Kazuhiko Nakane ,  Kenjiro Kime ,  Hideaki Kobachi

IPC: G11B7/007 ,  G11B7/09 ,  G11B7/095 ,  G11B7/13 ,  G11B7/135 ,  G11B7/14 ,  G11B7/22 ,  G02B7/02

CPC classification number: G11B7/133 ,  G11B7/00718 ,  G11B7/0908 ,  G11B7/0916 ,  G11B7/0933 ,  G11B7/0935 ,  G11B7/094 ,  G11B7/0948 ,  G11B7/0956 ,  G11B7/1353 ,  G11B7/1381 ,  G11B7/14 ,  G11B7/22 ,  G11B7/0909

Abstract: An optical device inclination angle adjuster for adjusting an optical axis of an optical device. The optical device has an optical axis and a peripheral portion, and is held by a holder. The adjuster includes an annular plate inserted between the optical device and the holder. The annular plate is in alignment with the peripheral portion of the optical device, and has an opening with an axis in alignment with the optical axis of the optical device to permit passage of light through the opening of the annular plate and through the optical device. A first pair of projections are formed between the annular plate and the optical device. The first pair of projections are disposed diametrically opposite to each other with respect to the optical axis and project in a direction parallel to the optical axis. A second pair of projections are formed between the annular plate and the holder. The second pair of projections are disposed diametrically opposite to each other with respect to the optical axis and project in a direction parallel to the optical axis. The first pair of projections and the second pair of projections are disposed at different rotary angles about the optical axis; whereby the inclination angle is adjusted by rotating the optical device about the first pair of projections or about the second pair of projections.

Abstract translation: 一种用于调节光学装置的光轴的光学装置倾斜角度调节器。 光学装置具有光轴和周边部分，并由保持器保持。 调节器包括插入在光学装置和保持器之间的环形板。 环形板与光学装置的周边部分对准，并且具有与光学装置的光轴对准的轴线的开口，以允许光通过环形板的开口并通过光学装置。 第一对突起形成在环形板和光学装置之间。 第一对突起相对于光轴彼此沿径向相对设置，并且在平行于光轴的方向上突出。 第二对突起形成在环形板和支架之间。 第二对突起相对于光轴彼此沿径向相对设置，并且沿与光轴平行的方向突出。 第一对突起和第二对突起以围绕光轴的不同旋转角设置; 由此通过围绕第一对突起或围绕第二对突起旋转光学装置来调节倾斜角度。

公开(公告)号：US5511048A

公开(公告)日：1996-04-23

申请号：US361478

申请日：1994-12-22

Applicant: Mitsuru Irie ,  Takeshi Utakouji ,  Morihiro Karaki ,  Nobuo Takeshita ,  Manabu Koike ,  Yasuyuki Satou ,  Naoyuki Egusa ,  Masahisa Shinoda ,  Akira Ishimori ,  Akihiro Shima ,  Shigenori Yagi

Inventor： Mitsuru Irie ,  Takeshi Utakouji ,  Morihiro Karaki ,  Nobuo Takeshita ,  Manabu Koike ,  Yasuyuki Satou ,  Naoyuki Egusa ,  Masahisa Shinoda ,  Akira Ishimori ,  Akihiro Shima ,  Shigenori Yagi

IPC: G11B11/10 ,  G11B7/125 ,  G11B11/105 ,  G11B11/00

CPC classification number: G11B7/125 ,  G11B11/10504 ,  G11B11/10532 ,  G11B11/10595

Abstract: The second harmonic wave of a solid laser light which is emitted from a second harmonic wave light source is divided into a plurality of laser beams by a diffraction grating. The divided laser beams are converged on a record carrier into a plurality of light spots by an optical head. Magnetic field generating coils for applying magnetic fields to the respective light spots in accordance with the recording signals from a signal line are disposed under the record carrier. Part of the solid laser light is reflected and input to a beam splitter. Since part of the light input to the beam splitter is taken out, a stabilizer controls the output of the solid laser light from the second harmonic wave light source, parallel recording/reproduction using the plurality of light spots which are arranged on the record carrier is enabled and the formation of the plurality of light spots is effectively controlled. Thus, a magneto-optical recording and reproducing apparatus which is capable of high-density recording and high-speed data transfer, which supplies a stable and accurate optical output, and which facilitates the control of the optical output is provided.

Abstract translation: 从二次谐波光源发射的固体激光的二次谐波通过衍射光栅被分成多个激光束。 分割的激光束通过光学头被会聚在记录载体上成多个光点。 根据来自信号线的记录信号将磁场施加到各个光点的磁场产生线圈设置在记录载体下方。 固体激光的一部分被反射并输入到分束器。 由于输入到分束器的光的一部分被取出，所以稳定器控制来自二次谐波光源的固体激光的输出，使用布置在记录载体上的多个光点进行并行记录/再现 并且有效地控制多个光点的形成。 因此，提供了能够进行高密度记录和高速数据传送的磁光记录和再现装置，其提供稳定且准确的光输出，并且有助于光输出的控制。

公开(公告)号：US5479386A

公开(公告)日：1995-12-26

申请号：US312086

申请日：1994-09-26

Applicant: Nobuo Takeshita ,  Hideaki Kobachi ,  Mitsuru Irie ,  Morihiro Karaki

Inventor： Nobuo Takeshita ,  Hideaki Kobachi ,  Mitsuru Irie ,  Morihiro Karaki

IPC: G11B7/085 ,  G11B7/00

CPC classification number: G11B7/08505

Abstract: A lens actuating system for an optical disk drive has an objective lens movably mounted in a movable frame with orthogonal X-, Y-, and Z-axes. A seeking servo moves the frame in the X-direction. A tracking servo moves the objective lens in the X-direction. A focusing servo moves the objective lens in the Z-direction. An optoelectronic sensor detects the relative position of the objective lens and frame in the X-direction, so that the tracking servo can maintain a fixed relative position during track-seeking, or in the Z-direction, to establish a neutral point on the Z-axis for the focusing servo. Force applied by the focusing servo or tracking servo to move the objective lens in one direction can be opposed by an equal and opposite force applied to a driven mass, so that a net zero force is transmitted to the frame.

Abstract translation: 用于光盘驱动器的镜头致动系统具有可移动地安装在具有正交X，Y和Z轴的可移动框架中的物镜。 寻求伺服器在X方向上移动框架。 跟踪伺服在X方向移动物镜。 聚焦伺服将物镜沿Z方向移动。 光电传感器在X方向上检测物镜和镜架的相对位置，使得跟踪伺服器可以在寻轨期间或在Z方向上保持固定的相对位置，以在Z上建立中性点 轴用于聚焦伺服。 通过聚焦伺服或跟踪伺服施加的力在一个方向上移动物镜可以通过施加到从动质量上的相等和相反的力相对，从而净零力传递到框架。

公开(公告)号：US06510119B2

公开(公告)日：2003-01-21

申请号：US09727521

申请日：2000-12-04

Applicant: Nobuo Takeshita ,  Mitsuru Irie ,  Toru Yoshihara

Inventor： Nobuo Takeshita ,  Mitsuru Irie ,  Toru Yoshihara

IPC: G11B7135

CPC classification number: G11B7/127 ,  G11B7/126 ,  G11B7/1356 ,  G11B2007/0006

Abstract: A light source (1) is composed of a single element having a light emitting point (2S) emitting a light (3S) and a light emitting point (2L) emitting a light (3L) at a longer wavelength than the light (3S), the light emitting point (2S) and the light emitting point (2L) being formed monolithically. In the direction parallel to the optical axis of a collimator lens (6), the light emitting point (2S) is placed closer, than the light emitting point (2L), to the collimator lens (6) and is placed on the side of the inclined plane (7a) of the beam shaping prism (7). The incidence angles of the light (3S) and the light (3L) to the inclined plane (7a) are set so that the incidence angle of the light (3S) is larger than that of the light (3L) and so that the lights (3S) and (3L) exit from the inclined plane (7a) at equal exit angles. The collimator lens (6), the beam shaping prism (7), etc. have refractive indexes which become larger as the wavelength of incident light becomes shorter. It is then possible to simplify the structure and reduce the unstableness of operation caused by a difference in light wavelength.

公开(公告)号：US5532987A

公开(公告)日：1996-07-02

申请号：US427811

申请日：1995-04-26

Applicant: Teruo Fujita ,  Morihiro Karaki ,  Mitsuru Irie ,  Kazuhiko Nakane

Inventor： Teruo Fujita ,  Morihiro Karaki ,  Mitsuru Irie ,  Kazuhiko Nakane

IPC: G11B7/007 ,  G11B7/09 ,  G11B7/095 ,  G11B7/13 ,  G11B7/135 ,  G11B7/14 ,  G11B7/22

CPC classification number: G11B7/133 ,  G11B7/00718 ,  G11B7/0908 ,  G11B7/0916 ,  G11B7/0933 ,  G11B7/0935 ,  G11B7/094 ,  G11B7/0948 ,  G11B7/0956 ,  G11B7/1353 ,  G11B7/1381 ,  G11B7/14 ,  G11B7/22 ,  G11B7/0909

Abstract: A focus error detecting device includes a reflected beam obscurer and a two-division photodetector. The observer obscures a part of the reflected beam. The two-division photodetector includes first and second light receiving sections separated from each other by a division band region which receive the reflected light beam not obscured by the obscurer. A focus error signal is produced based on the output of each light receiving section. Each light receiving section has an array of tapered projections along its edge in the division band region. Alteratively, the light receiving sections have a main part with an edge coincident with an edge of the division band region, and groups of light receiving stripes extending in a direction parallel with the edges of the main part.

Abstract translation: 聚焦误差检测装置包括反射光束遮蔽物和二分光电检测器。 观察者遮挡了反射光束的一部分。 二分光电检测器包括通过接收不被遮挡物遮挡的反射光束的分割带区彼此分离的第一和第二光接收部分。 基于每个光接收部分的输出产生聚焦误差信号。 每个光接收部分沿其分割带区域的边缘具有锥形突起的阵列。 换句话说，光接收部具有与分带区域的边缘重合的边缘的主要部分和沿与主要部分的边缘平行的方向延伸的光接收条纹组。