利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

48 条记录 (耗时 0.035 秒)

    Optical recording medium discriminating apparatus using laser beams of different wavelengths
    1.
    发明授权
    Optical recording medium discriminating apparatus using laser beams of different wavelengths 失效
    使用不同波长的激光的光记录介质识别装置

    公开(公告)号：US5963523A

    公开(公告)日：1999-10-05

    申请号：US800276

    申请日：1997-02-13

    申请人： Hiroshi Kayama ,  Ryoichi Imanaka ,  Tetsuo Saimi

    发明人： Hiroshi Kayama ,  Ryoichi Imanaka ,  Tetsuo Saimi

    IPC分类号： G11B7/00 ,  G11B7/006 ,  G11B7/125 ,  G11B7/26 ,  G11B3/90

    CPC分类号： G11B7/1275 ,  G11B2007/0006

    摘要： In an optical recording and reproducing apparatus, two light sources such as a laser diode of different wavelengths from each other are provided, and photosensors receive the light emitted by the light sources and reflected by the optical recording medium. Before recording or reproduction is started, the type of optical recording medium having a different wavelength dependent reflectance is discriminated. Because two wavelengths are used, the difference of the outputs is large, and the type of the optical recording medium is discriminated reliably according to the outputs of the photosensors. Then, the operation of the apparatus is stabilized according to the type of the optical recording medium by optimizing the laser power, the gain of the controller, the revolution number of the medium or the like.

    摘要翻译： 在光学记录和再现装置中，提供了诸如彼此不同波长的激光二极管的两个光源，并且光电传感器接收由光源发射并被光学记录介质反射的光。 在开始记录或再现之前，鉴别具有不同的波长相关反射率的光学记录介质的类型。 由于使用两个波长，所以输出的差异大，根据光电传感器的输出可以可靠地区分光记录介质的类型。 然后，通过优化激光功率，控制器的增益，介质的转数等，根据光学记录介质的类型来稳定设备的操作。

    Reproducing-only and recordable-reproduceable optical discs and common optical disc player therefor
    2.
    发明授权
    Reproducing-only and recordable-reproduceable optical discs and common optical disc player therefor 失效
    可重现的可再现的光盘和普通的光盘播放器

    公开(公告)号：US4734904A

    公开(公告)日：1988-03-29

    申请号：US27410

    申请日：1987-03-18

    申请人： Ryoichi Imanaka ,  Yoshihiro Okino ,  Tetsuo Saimi

    发明人： Ryoichi Imanaka ,  Yoshihiro Okino ,  Tetsuo Saimi

    IPC分类号： G11B7/013 ,  G11B7/24 ,  G11B7/00

    CPC分类号： G11B7/24085 ,  G11B7/24

    摘要： The combination of recordable-reproduceable optical discs and reproducing-only optical discs and an optical disc player which is capable of reproducing recorded signals both from the recordable-reproduceable optical disc possessing pregrooves and the reproducing-only optical disc possessing recording pits by means of a common optical system. The common optical system has a common laser for irradiating both types of discs with a laser beam used for reading the discs. The wavelength of the laser is .lambda. and the depth or height of the pregrooves of the recordable-reproduceable optical disc is made equal to or less than .lambda./8n, and the depth or height of the recording pits of the reproducing-only optical disc is made equal to or greater than .lambda./8n but less than .lambda./4n, wherein n is the refractive index of the substrate of the disc or the protective layer provided on the surface thereof.

    摘要翻译： 可记录可再生光盘和仅再现光盘的组合以及能够从具有预存槽的可记录光盘和仅具有记录凹坑的再现光盘再现记录信号的光盘播放器，借助于 普通光学系统。 普通光学系统具有用于用用于读取光盘的激光束照射两种类型的盘的普通激光器。 激光的波长为λ，可记录光盘的预槽的深度或高度等于或小于λ/ 8n，再现光盘的记录凹坑的深度或高度为 制成等于或大于λ/ 8n但小于λ/ 4n，其中n是盘的衬底或设置在其表面上的保护层的折射率。

    Optical element, optical head, optical recording reproducing apparatus and optical recording/reproducing method
    3.
    发明申请
    Optical element, optical head, optical recording reproducing apparatus and optical recording/reproducing method 有权
    光学元件，光学头，光学记录再现装置和光学记录/再现方法

    公开(公告)号：US20080112303A1

    公开(公告)日：2008-05-15

    申请号：US12002380

    申请日：2007-12-17

    申请人： Hidenori Wada ,  Tetsuo Saimi ,  Daisuke Ogata ,  Seiji Nishino ,  Hiroaki Yamamoto ,  Shin-ichi Kadowaki ,  Yoshiaki Komma

    发明人： Hidenori Wada ,  Tetsuo Saimi ,  Daisuke Ogata ,  Seiji Nishino ,  Hiroaki Yamamoto ,  Shin-ichi Kadowaki ,  Yoshiaki Komma

    IPC分类号： G11B7/00

    CPC分类号： G11B7/13925 ,  G02F2203/18 ,  G11B7/0948 ,  G11B7/1369 ,  G11B7/13927 ,  G11B2007/0013

    摘要： The invention presents an optical element with which an optical head can be configured, in which there is little deterioration of the correctional effect when the objective lens shifts, as well as an optical head and an optical recording/reproducing apparatus using such an optical element. The invention also presents a novel optical recording/reproducing apparatus and optical recording/reproducing method. The optical element, includes a first voltage application electrode 13, a first opposing electrode 17 arranged in opposition to the first voltage application electrode 13, and a first phase changing layer 15 arranged between the first voltage application electrode 13 and the first opposing electrode 17. By changing a voltage between the first voltage application electrode 13 and the first opposing electrode 17, a phase that converts plane waves into spherical waves is imparted on light that is incident on the first phase changing layer 15.

    摘要翻译： 本发明提供了一种光学元件，通过该光学元件可以配置光学头，其中当物镜移动时，校正效果几乎没有劣化，以及使用这种光学元件的光学头和光学记录/再现装置。 本发明还提出了一种新颖的光学记录/再现装置和光学记录/再现方法。 光学元件包括第一电压施加电极13，与第一电压施加电极13相对布置的第一相对电极17和布置在第一施加电极13和第一相对电极17之间的第一相变层15。 通过改变第一电压施加电极13和第一相对电极17之间的电压，将入射到第一相变层15上的光转换成球面波的相位。

    Optical element, optical head, optical recording reproducing apparatus and optical recording/reproducing method
    5.
    发明授权
    Optical element, optical head, optical recording reproducing apparatus and optical recording/reproducing method 失效
    光学元件，光学头，光学记录再现装置和光学记录/再现方法

    公开(公告)号：US06987598B2

    公开(公告)日：2006-01-17

    申请号：US10892009

    申请日：2004-07-14

    申请人： Hidenori Wada ,  Tetsuo Saimi ,  Daisuke Ogata ,  Seiji Nishino ,  Hiroaki Yamamoto ,  Shin-ichi Kadowaki ,  Yoshiaki Komma

    发明人： Hidenori Wada ,  Tetsuo Saimi ,  Daisuke Ogata ,  Seiji Nishino ,  Hiroaki Yamamoto ,  Shin-ichi Kadowaki ,  Yoshiaki Komma

    IPC分类号： G02F1/03 ,  G02F1/01 ,  G02F1/00 ,  G11B7/00

    CPC分类号： G11B7/13925 ,  G02F2203/18 ,  G11B7/0948 ,  G11B7/1369 ,  G11B7/13927 ,  G11B2007/0013

    摘要： The invention presents an optical element with which an optical head can be configured, in which there is little deterioration of the correctional effect when the objective lens shifts, as well as an optical head and an optical recording/reproducing apparatus using such an optical element. The invention also presents a novel optical recording/reproducing apparatus and optical recording/reproducing method. The optical element, includes a first voltage application electrode 13, a first opposing electrode 17 arranged in opposition to the first voltage application electrode 13, and a first phase changing layer 15 arranged between the first voltage application electrode 13 and the first opposing electrode 17. By changing a voltage between the first voltage application electrode 13 and the first opposing electrode 17, a phase that converts plane waves into spherical waves is imparted on light that is incident on the first phase changing layer 15.

    摘要翻译： 本发明提供了一种光学元件，通过该光学元件可以配置光学头，其中当物镜移动时，校正效果几乎没有劣化，以及使用这种光学元件的光学头和光学记录/再现装置。 本发明还提出了一种新颖的光学记录/再现装置和光学记录/再现方法。 光学元件包括第一电压施加电极13，与第一电压施加电极13相对布置的第一相对电极17和布置在第一施加电极13和第一相对电极17之间的第一相变层15。 通过改变第一电压施加电极13和第一相对电极17之间的电压，将入射到第一相变层15上的光转换成球面波的相位。

    Aberration detection device and optical information recording and reproducing apparatus
    6.
    发明授权
    Aberration detection device and optical information recording and reproducing apparatus 失效
    畸变检测装置和光信息记录和再现装置

    公开(公告)号：US06856584B2

    公开(公告)日：2005-02-15

    申请号：US10678418

    申请日：2003-10-02

    申请人： Tetsuo Saimi ,  Shin-ichi Tanaka

    发明人： Tetsuo Saimi ,  Shin-ichi Tanaka

    IPC分类号： G11B7/00 ,  G11B7/13 ,  G11B7/135

    CPC分类号： G11B7/1353 ,  G11B7/131 ,  G11B7/1369 ,  G11B7/1378 ,  G11B7/13927 ,  G11B2007/0013

    摘要： A returning light beam emitted by a light source and reflected by an optical disk is separated by a half mirror, and partitioned and deflected at a hologram into a light beam passing a first region and a light beam passing a second region. The light beam passing the first region is received by a plurality of photo-detectors, and the aberration is detected by comparing the resulting signals. Based on the aberration detection, the aberration of an optical system can be reduced by driving an aberration correction element in real-time.

    摘要翻译： 由光源发射并由光盘反射的返回光束被半反射镜分离，并且以全息图分隔和偏转成通过第一区域的光束和通过第二区域的光束。 通过第一区域的光束被多个光电检测器接收，并且通过比较所得到的信号来检测像差。 基于像差检测，可以通过实时驱动像差校正元件来减小光学系统的像差。

    Holographic optical device
    8.
    发明授权
    Holographic optical device 失效
    全息光学装置

    公开(公告)号：US5748599A

    公开(公告)日：1998-05-05

    申请号：US785542

    申请日：1997-01-17

    申请人： Hiroaki Yamamoto ,  Tetsuo Saimi ,  Seiji Nishino ,  Yoshiaki Komma ,  Hidenori Wada

    发明人： Hiroaki Yamamoto ,  Tetsuo Saimi ,  Seiji Nishino ,  Yoshiaki Komma ,  Hidenori Wada

    IPC分类号： G11B7/09 ,  G11B7/12 ,  G11B7/135 ,  G11B7/00

    CPC分类号： G11B7/1353 ,  G11B7/0901 ,  G11B7/094 ,  G11B7/123 ,  G11B7/0912 ,  G11B7/0916

    摘要： A light beam emitted from a semiconductor laser element is collimated by a collimating lens, and is applied to an optical disk through a polarizing holographic beam splitter, a .lambda./4 plate and an objective lens, a light beam reflected by the optical disk is applied to the polarizing holographic beam splitter and is diffracted. Diffracted light beams of +1st order and -1st order are applied to two photodetectors, and a focus error signal and a tracking error signal are obtained on the basis of the diffracted light beam of +1st order and an information signal is obtained on the basis of the diffracted light beam of -1st order.

    摘要翻译： 从半导体激光元件发射的光束被准直透镜准直，并通过偏振全息光束分离器，λ/ 4板和物镜施加到光盘上，施加由光盘反射的光束 到偏振全息分束器并被衍射。 + 1级和1级的衍射光束被施加到两个光电检测器，并且基于+ 1阶的衍射光束获得聚焦误差信号和跟踪误差信号，并且基于 的衍射光束。

    Movable optical head integrally incorporated with objective lens and hologram element
    9.
    发明授权
    Movable optical head integrally incorporated with objective lens and hologram element 失效
    整体结合物镜和全息元件的可移动光学头

    公开(公告)号：US5648951A

    公开(公告)日：1997-07-15

    申请号：US415764

    申请日：1995-04-03

    申请人： Makoto Kato ,  Yoshiaki Komma ,  Shin-ichi Kadowaki ,  Yoshikazu Hori ,  Seiji Nishino ,  Tetsuo Saimi

    发明人： Makoto Kato ,  Yoshiaki Komma ,  Shin-ichi Kadowaki ,  Yoshikazu Hori ,  Seiji Nishino ,  Tetsuo Saimi

    IPC分类号： G02B5/18 ,  G02B5/32 ,  G02B27/00 ,  G11B7/09 ,  G11B7/12 ,  G11B7/13 ,  G11B7/135 ,  G11B7/00

    CPC分类号： G11B7/131 ,  G02B27/0037 ,  G02B27/4238 ,  G02B27/4277 ,  G02B5/1819 ,  G02B5/1857 ,  G02B5/32 ,  G11B7/094 ,  G11B7/123 ,  G11B7/1353 ,  G11B7/0912

    摘要： Disclosed is a compact optical pick-up head apparatus suitable for mass-production, which comprises a light radiation source, an element composed of photodetector split into a plurality of regions and integrated on the same base, an objective lens for focusing a beam from the above source on an optical disk, a blazed hologram integrated to the support member of the lens, a means for driving the support member to which the objective lens and blazed hologram are integrated in response to an output as servo signal output from the photodetector which receives a diffracted beam produced in such a manner that a return beam reflected or diffracted by the optical disk is incident on the objective lens integrated with the above hologram. The optical pickup apparatus according to the present invention employs a region-split-type phase hologram in which a pair of Flesnel zone plate-like patterns, by which a plurality of diffraction wavefronts having a different focus and the same diffraction order are produced outside an optical-axis, are non-superimposedly formed. The above hologram can be blazed with a pinpoint accuracy by lithography using a few mask patterns synthesized by a computer, and further a more preferably blazing can be realized by the combination of the ion beam etching and the lithography. Accordingly, not only noise caused by an unnecessary diffracted beam component but also the offset of a servo signal can be restrained and the size of the objective lens can be reduced by the integration of the entire optical system, which greatly contributes to the superminiaturization of an optical head.

    摘要翻译： 公开了一种适用于批量生产的紧凑型光学拾取头装置，其包括光辐射源，由分离成多个区域并集成在同一基底上的光电检测器构成的元件，用于将来自 在光盘上的源极上，与透镜的支撑构件集成的闪耀的全息图，用于驱动支撑构件的装置，物镜和闪耀的全息图响应于作为从接收到的光电检测器输出的伺服信号的输出而被集成到该支撑构件上 以使得由光盘反射或衍射的返回光束入射到与上述全息图集成的物镜上的方式产生的衍射光束。 根据本发明的光学拾取装置采用区域分割型相位全息图，其中一对Flesnel区域板状图案，其中具有不同焦点和相同衍射级的多个衍射波前在外部产生 光轴不叠加地形成。 通过使用由计算机合成的几个掩模图案通过光刻可以使上述全息图以精确的准确度闪耀，并且还可以通过离子束蚀刻和光刻的组合来实现更好的燃烧。 因此，不仅可以抑制由不必要的衍射光束分量引起的噪声，而且可以抑制伺服信号的偏移，并且可以通过整个光学系统的整合来减小物镜的尺寸，这极大地有助于使 光头。