公开(公告)号：US20030048737A1

公开(公告)日：2003-03-13

申请号：US10233468

申请日：2002-09-04

Applicant: MINEBEA CO., LTD.

Inventor： Mizuki Nakamura ,  Atsushi Kitamura ,  Kozo Matsumoto

IPC: G11B007/135

CPC classification number: G11B7/1362 ,  G11B7/123 ,  G11B7/127 ,  G11B7/1365 ,  G11B2007/0006

Abstract: An optical pickup apparatus includes: one laser beam source for emitting two laser beams having respective optical paths parallel to each other and wavelengths different from each other; an optical-axis aligning means adapted to make the laser beams coaxial with each other; a collimating lens; a reflecting mirror; and an objective lens. A laser beam reflected at a high or low density disk takes the incoming path backward, passes through the optical-axis aligning means, is incident on a photo-detector, and converted thereby into an electrical signal. The optical-axis aligning means is structured such that one kind of dielectric multilayer film is formed on a transparent substrate, a transparent plate is attached on the one kind of dielectric multilayer film, and that another kind of dielectric multilayer film is formed on the transparent plate, and has its reflectance varied according to the wavelength of the laser beam.

Abstract translation: 一种光学拾取装置包括：一个激光束源，用于发射具有彼此平行的各个光路和彼此不同的波长的两个激光束; 适于使激光束彼此同轴的光轴对准装置; 准直透镜; 反射镜; 和物镜。 在高或低密度盘反射的激光束将入射路径向后，通过光轴对准装置，入射到光检测器上，从而转换为电信号。 光轴对准装置被构造为使得在透明基板上形成一种电介质多层膜，在一种电介质多层膜上安装透明板，并且在透明基板上形成另一种类型的电介质多层膜 并且其反射率根据激光束的波长而变化。

公开(公告)号：US20020084405A1

公开(公告)日：2002-07-04

申请号：US10026632

申请日：2001-12-27

Applicant: MINEBEA CO., LTD.

Inventor： Kozo Matsumoto ,  Atsushi Kitamura ,  Motoji Egawa

IPC: H01L027/00

CPC classification number: G11B7/139 ,  G11B7/123 ,  G11B7/1374 ,  G11B2007/0006

Abstract: An information reading and recording apparatus in which recording media having respective recording densities different front each other, such as DVD, CD, CD-R/RW and the like, can be compatibly read and recorded only with a low-cost laser diode for low recording density. A laser beam from the laser diode is passed through a collimator lens via a half mirror, and there is provided a reflecting mirror for introducing the laser beam to one of two objective lenses, from which the laser beam is emitted towards the disk. One of the objective lenses is a lens having a high numerical aperture and the other one is a lens having a low numerical aperture. A super-resolution cut-off filter is disposed immediately before the objective lens having a high numerical aperture so that the objective lens and the super-resolution cut-off filter are placed in the optical path on reading DVD. On reading CD, the other lens is placed in the optical path. The laser beam reflected from the disk is received by a photo-detector for converting it into an electrical signal.

Abstract translation: 一种信息读取和记录装置，其中具有各自的记录密度彼此不同的记录介质（诸如DVD，CD，CD-R / RW等）的信息读取和记录装置可以仅与低成本的低成本激光二极管兼容地读取和记录 记录密度。 来自激光二极管的激光束经由半反射镜通过准直透镜，并且设置有用于将激光束引入两个物镜之一的反射镜，激光束从该物镜向盘发射。 其中一个物镜是具有高数值孔径的透镜，另一个是具有低数值孔径的透镜。 在具有高数值孔径的物镜之前立即设置超分辨率截止滤光器，使得物镜和超分辨率截止滤光器被放置在DVD上的光路中。 在阅读CD时，另一个镜头放置在光路中。 从光盘反射的激光束被光电检测器接收，以将其转换成电信号。

公开(公告)号：US20030053398A1

公开(公告)日：2003-03-20

申请号：US10241550

申请日：2002-09-12

Applicant: MINEBEA CO., LTD.

Inventor： Mizuki Nakamura ,  Atsushi Kitamura ,  Kozo Matsumoto ,  Motoji Egawa

IPC: G11B007/135

CPC classification number: G11B7/139 ,  G11B7/1365 ,  G11B7/1381 ,  G11B7/1395 ,  G11B2007/0006 ,  G11B2007/13727

Abstract: A laser beam emitted from a laser diode and having a wavelength of 780 nm is S-polarized. A polarization plane rotating means (null/4 phase plate) is disposed between a super-resolution cut-off filter comprising a polarizing filter film and an objective lens. When reading on DVD, the objective lens, the polarization plane rotating means and the super-resolution cut-off filter in combination are set to the optical path. The S-polarized laser beam is focused to a micro spot diameter by super-resolution effects by the super-resolution cut-off filter together with the objective lens. Also, the S-polarized laser beam reflected at a disk and traveling backward along the incoming optical path is converted into a P-polarized laser beam while passing backward through the polarization plane rotating means. The P-polarized laser beam passes through the super-resolution cut-off filter without loss is received by a photo-detector.

Abstract translation: 从激光二极管发射并具有780nm波长的激光束是S偏振光。 在包括偏振滤光片和物镜的超分辨率截止滤光片之间设置极化面旋转装置（羔羊/ 4相位板）。 当在DVD上读取时，将物镜，偏振面旋转装置和超分辨率截止滤光器组合在一起设置为光路。 通过超分辨率截止滤光片与物镜的超分辨率效果将S偏光激光束聚焦到微光斑直径。 此外，在光盘反射并沿着入射光路向后移动的S偏振激光束在通过偏振面旋转装置的同时被转换成P偏振激光束。 P偏振激光束通过超分辨率截止滤光器，而不损失由光电检测器接收。

公开(公告)号：US20030007446A1

公开(公告)日：2003-01-09

申请号：US10184984

申请日：2002-07-01

Applicant: MINEBEA CO., LTD.

Inventor： Atsushi Kitamura ,  Kozo Matsumoto ,  Motoji Egawa

IPC: G11B007/135

CPC classification number: G11B7/1362 ,  G11B7/1365 ,  G11B7/1369 ,  G11B7/139 ,  G11B2007/0006 ,  G11B2007/13727

Abstract: A liquid crystal element is provided as a polarization plane rotating means between a laser beam source and a beam splitter. Light emitted from the laser beam source passes through the liquid crystal element and the beam splitter, and is converted into parallel light by a collimating lens. The collimated light is incident on a first light-selection means, is reflected at a flat first reflecting surface or a concave second reflecting surface, and is then incident on a super-resolution cut-off filter as a second light-selection means. The light having passed through the second light-selection means is incident on an objective lens, and is converged onto a recording surface. The selection of the reflecting surface of the first light-selection means is determined based on an operation mode of the liquid crystal element.

Abstract translation: 液晶元件作为激光束源和分束器之间的偏振面旋转装置。 从激光束源发射的光通过液晶元件和分束器，并通过准直透镜转换为平行光。 准直光入射到第一光选择装置上，在平坦的第一反射表面或凹入的第二反射表面反射，然后作为第二光选择装置入射到超分辨率截止滤光器上。 已经穿过第二光选择装置的光入射到物镜上，并被会聚在记录表面上。 基于液晶元件的操作模式来确定第一光选择装置的反射表面的选择。

公开(公告)号：US20040232318A1

公开(公告)日：2004-11-25

申请号：US10847074

申请日：2004-05-17

Applicant: Minebea Co., Ltd.

Inventor： Atsushi Kitamura ,  Shigeyuki Adachi ,  Sawa Tanabe

IPC: G06M007/00

CPC classification number: G01L5/166

Abstract: An optical displacement sensor in an external-force detecting device comprises a light source, an optical sensor, and a light reflecting means. The light source and the optical sensor are disposed at an action section of the device adapted to receive an external force, and the light reflecting means is disposed at a support section of the device adapted to support the action section via elastic spoke sections, and light emitted from the light source is reflected at the light reflecting means and received at the optical sensor whereby displacement of the action section relative to the support section is detected for calculation of an external force applied.

Abstract translation: 外力检测装置中的光学位移传感器包括光源，光学传感器和光反射装置。 光源和光学传感器设置在适于接受外力的装置的作用部分处，并且光反射装置设置在适于通过弹性轮辐部分支撑作用部分的装置的支撑部分，以及光 从光源射出的光在光反射装置处被反射并被接收在光学传感器处，由此检测作用部分相对于支撑部分的位移，以计算施加的外力。

公开(公告)号：US20030039196A1

公开(公告)日：2003-02-27

申请号：US10212164

申请日：2002-08-06

Applicant: Minebea Co., Ltd.

Inventor： Mizuki Nakamura ,  Atsushi Kitamura ,  Kozo Matsumoto

IPC: G11B007/00 ,  G11B007/135

CPC classification number: G11B7/1381 ,  G11B7/1365 ,  G11B2007/0006 ,  G11B2007/13727

Abstract: An information reading and recording apparatus includes a super-resolution cut-off filter having an annular metal reflection film at its center portion and disposed immediately before one of two objective lenses with a higher NA. When reading DVD, the one objective lens with a higher NA with the super-resolution cut-off filter disposed therebefore is positioned at the optical path. When reading CD, the other objective lens with a lower NA is positioned at the optical path. The laser beam reflected by a disk follows backward the incoming optical path to pass through a half mirror, and is received by a photodetector to be converted into an electrical signal.

Abstract translation: 信息读取和记录装置包括超分辨率截止滤光器，其在其中心部分具有环形金属反射膜，并且立即设置在具有较高NA的两个物镜之一之前。 当读DVD时，设置有超分辨率截止滤波器的具有较高NA的一个物镜位于光路上。 当读取CD时，具有较低NA的另一物镜位于光路。 由光盘反射的激光束沿着入射光路的后方穿过半反射镜，并被光电检测器接收以转换成电信号。

公开(公告)号：US20040190307A1

公开(公告)日：2004-09-30

申请号：US10788292

申请日：2004-03-01

Applicant: MINEBEA CO., LTD.

Inventor： Atsushi Kitamura ,  Motoji Egawa

IPC: G02B006/32

CPC classification number: G02B6/0028

Abstract: A spread illuminating apparatus comprises a plurality of LED's as light sources, a light conductive plate, and a light controlling means disposed between the LED's and the light conductive plate. The light controlling means includes a plurality of transparent resin films which have respective different refractive indexes, which are laminated over one another in a direction parallel to a major surface as a light exit surface of the light conductive plate thereby forming a refractive index profile in the direction parallel to the light exit surface of the light conductive plate, and two adjacent ones of which are put together by adhesive that can transmit light emitted from the LED.

Abstract translation: 扩展照明装置包括多个LED作为光源，导光板和设置在LED和导光板之间的光控制装置。 光控制装置包括多个具有各自不同折射率的透明树脂膜，它们在与主表面平行的方向上彼此层叠，作为导光板的光出射表面，从而在导光板中形成折射率分布 方向平行于导光板的光出射表面，并且其两个相邻的方向通过可以透射从LED发射的光的粘合剂放置在一起。

公开(公告)号：US20040190279A1

公开(公告)日：2004-09-30

申请号：US10797086

申请日：2004-03-11

Applicant: MINEBEA CO., LTD.

Inventor： Atsushi Kitamura

IPC: G01D011/28 ,  G01J001/04 ,  G01J005/08 ,  H01J005/16

CPC classification number: G02B6/0028

Abstract: A spread illuminating apparatus includes at least one light source, a light conductive plate having the at least one light source disposed toward one end surface thereof, and at least one light controlling means disposed between the at least one light source and the light conductive plate. The at least one light controlling means is formed such that a plurality of transparent rectangular solids are stacked one over another vertically and horizontally, and that the transparent rectangular solids are put together by means of adhesive which can transmit light emitted from the at least one light source. The at least one light controlling means has a refractive index profile formed in both directions parallel to and vertical to the light exit surface of the light conductive plate thereby controlling light with respect to the both directions.

Abstract translation: 扩展照明装置包括至少一个光源，具有朝向其一个端面设置的所述至少一个光源的导光板以及设置在所述至少一个光源和所述导光板之间的至少一个光控制装置。 所述至少一个光控制装置形成为使得多个透明矩形固体在垂直和水平方向上彼此堆叠，并且透明矩形固体通过粘合剂放置在一起，所述粘合剂可以透射从所述至少一个光发射的光 资源。 所述至少一个光控制装置具有在与导光板的光出射表面平行并垂直于两个方向形成的折射率分布，从而控制相对于两个方向的光。

公开(公告)号：US20040165371A1

公开(公告)日：2004-08-26

申请号：US10760587

申请日：2004-01-21

Applicant: MINEBEA CO. LTD.

Inventor： Atsushi Kitamura ,  Shingo Suzuki

IPC: F21V007/04

CPC classification number: G02B6/0028 ,  H04M1/22 ,  Y10S385/901

Abstract: A spread illuminating apparatus includes a light converging element which has a refractive index profile in a direction orthogonal to two major surfaces of a light conductive plate, and which is disposed between at least one light source and one end surface of the light conductive plate. The light converging element comprises: a plurality of transparent resin films which have respective refractive indexes so as to constitute a refractive index gradation mirror-imaged with respect to the center plane of the light converging element, and which are layered over one another; and a plurality of light-transmittable adhesive layers each of which is sandwiched between two adjacent transparent resin films.

Abstract translation: 扩散照明装置包括在与导光板的两个主表面正交的方向上具有折射率分布并且设置在至少一个光源和光导板的一个端面之间的聚光元件。 聚光元件包括：多个透明树脂膜，它们具有折射率，以构成相对于聚光元件的中心平面镜像成像并相互分层的折射率渐变; 以及多个透光性粘合剂层，其各自夹在两个相邻的透明树脂膜之间。

公开(公告)号：US20030053396A1

公开(公告)日：2003-03-20

申请号：US10243921

申请日：2002-09-16

Applicant: Minebea Co., Ltd.

Inventor： Mizuki Nakamura ,  Atsushi Kitamura ,  Kozo Matsumoto ,  Motoji Egawa

IPC: G11B007/135

CPC classification number: G11B7/1381 ,  G11B7/1367 ,  G11B7/139 ,  G11B7/1395 ,  G11B2007/0006 ,  G11B2007/13727

Abstract: An optical pickup apparatus for reading and recording information on recording media includes a semiconductor laser, a collimating lens, a half mirror, a reflecting mirror, and an objective lens. Further included therein are a super-resolution cutoff filter and an aperture control filter, one of which is appropriately selected and set right before the objective lens by a filter switching-over device. When reading the DVD, the super-resolution cutoff filter is set at the optical path, whereas when reading the CD, the aperture control filter is set thereat. The filter switching device is arranged separately from an actuator driving system having the objective lens integrally structured therewith.

Abstract translation: 用于在记录介质上读取和记录信息的光学拾取装置包括半导体激光器，准直透镜，半反射镜，反射镜和物镜。 其中还包括超分辨率截止滤波器和孔径控制滤波器，其中一个被滤波器切换装置适当选择和设置在物镜之前。 当读取DVD时，超分辨率截止滤波器被设置在光路上，而当读取CD时，光圈控制滤波器被设置在那里。 滤波器开关装置与具有与其一体构成的物镜的致动器驱动系统分开配置。