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    • 1. 发明授权
    • Optical pickup
    • 光学拾音
    • US07184384B2
    • 2007-02-27
    • US10512188
    • 2003-04-18
    • Tetsuo UeyamaKeiji SakaiRenzaburou MikiOsamu MiyazakiYukio Watanabe
    • Tetsuo UeyamaKeiji SakaiRenzaburou MikiOsamu MiyazakiYukio Watanabe
    • G11B7/00
    • G11B7/1353G11B7/0903G11B7/0956
    • An optical pickup converts a laser beam from a semiconductor laser (1) into a parallel ray with a collimator lens (2), and divides it into a main beam (30), a sub-beam (+1st order component) (31), and a sub-beam (−1st order component) (32) with a gradient multiple-division type phase difference grating (3). After passing through a beam splitter (4), an objective lens (5) condenses the light beams on a track (61) of an optical disc (6), and the reflected light that has passed through the objective lens 5 is reflected at the beam splitter (4) and is guided into optical detectors (8A, 8B, and 8C) by a condensing lens (7). Accordingly, in a tracking error signal detecting method using the push-pull signals of the main beam and sub-beams, an offset produced by an objective lens shift or a disc tilt can be cancelled at low cost without lowering the efficiency of using light.
    • 光学拾取器将来自半导体激光器(1)的激光束用准直透镜(2)转换成平行光线,并将其分割成主光束(30),子光束(+ 1次分量)(31) ,和具有梯度多分割型相位差光栅(3)的子光束(-1阶分量)(32)。 在通过分束器(4)之后,物镜(5)将光束会聚在光盘(6)的轨道(61)上,并且已经通过物镜5的反射光在 分束器(4),并通过聚光透镜(7)被引导到光学检测器(8A,8B和8C)中。 因此,在使用主光束和子光束的推挽信号的跟踪误差信号检测方法中,可以以低成本消除由物镜偏移或盘倾斜产生的偏移而不降低使用光的效率。
    • 3. 发明申请
    • OPTICAL POINTING DEVICE AND ELECTRONIC DEVICE INCLUDING THE OPTICAL POINTING DEVICE
    • 光学指示装置和包括光学指示装置的电子装置
    • US20110304538A1
    • 2011-12-15
    • US13138173
    • 2010-01-15
    • Takahiro MiyakeRenzaburou MikiTetsushi NoroMinoru Ueda
    • Takahiro MiyakeRenzaburou MikiTetsushi NoroMinoru Ueda
    • G06F3/033
    • G06F3/042G06F3/03547G06F2203/0338
    • An inclined plane (13) of a prism (12) serving as a light-direction changing element transmits and refracts light emitted from an LED light source (16) so that a contact surface (11) is illuminated with the light thus refracted. The light is diffusely-reflected from an object which is in contact with the contact surface (11). A part of the light thus diffusely-reflected is transmitted through the prism (12). A light path of the part of the light is changed by the inclined plane (13) so that a lens (14) serving as an image-forming element receives the part of the light. The lens 14 forms an image on the basis of the part of the light thus received. An image-capturing element (15) captures the image thus formed as image data. The image data obtained by the image-capturing element (15) is subjected to image processing, so that a change in the contact surface (11) is extracted. On the basis of the change thus extracted, an amount of movement of the object and a direction of the movement can be obtained. With the arrangement, it is possible to realize an optical pointing device having a small and thin body.
    • 用作光方向改变元件的棱镜(12)的倾斜平面(13)透射并折射从LED光源(16)发射的光,使得接触表面(11)被如此折射的光照射。 光从与接触表面(11)接触的物体漫反射。 由此漫反射的光的一部分透过棱镜(12)。 光的一部分的光路由倾斜平面(13)改变,使得用作图像形成元件的透镜(14)接收部分光。 透镜14基于如此接收的光的一部分来形成图像。 图像拍摄元件(15)捕获如此形成的图像作为图像数据。 对由图像拍摄元件(15)获得的图像数据进行图像处理,从而提取接触面(11)的变化。 基于如此提取的变化,可以获得物体的移动量和移动方向。 通过该结构,可以实现具有小而薄体的光学指向装置。
    • 4. 发明申请
    • Optical pickup
    • 光学拾音
    • US20050180293A1
    • 2005-08-18
    • US10512188
    • 2003-04-18
    • Tetsuo UeyamaKeiji SakaiRenzaburou MikiOsamu MiyazakiYukio Watanabe
    • Tetsuo UeyamaKeiji SakaiRenzaburou MikiOsamu MiyazakiYukio Watanabe
    • G11B7/1353G11B7/09G11B7/095G11B7/00
    • G11B7/1353G11B7/0903G11B7/0956
    • An optical pickup converts a laser beam from a semiconductor laser (1) into a parallel ray with a collimator lens (2), and divides it into a main beam (30), a sub-beam (+1st order component) (31), and a sub-beam (−1st order component) (32) with a gradient multiple-division type phase difference grating (3). After passing through a beam splitter (4), an objective lens (5) condenses the light beams on a track (61) of an optical disc (6), and the reflected light that has passed through the objective lens 5 is reflected at the beam splitter (4) and is guided into optical detectors (8A, 8B, and 8C) by a condensing lens (7). Accordingly, in a tracking error signal detecting method using the push-pull signals of the main beam and sub-beams, an offset produced by an objective lens shift or a disc tilt can be cancelled at low cost without lowering the efficiency of using light.
    • 光学拾取器将来自半导体激光器(1)的激光束用准直透镜(2)转换成平行光线,并将其分割成主光束(30),子光束(+ 1次分量)(31) ,和具有梯度多分割型相位差光栅(3)的子光束(-1阶分量)(32)。 在通过分束器(4)之后,物镜(5)将光束会聚在光盘(6)的轨道(61)上,并且已经通过物镜5的反射光在 分束器(4),并通过聚光透镜(7)被引导到光学检测器(8A,8B和8C)中。 因此,在使用主光束和子光束的推挽信号的跟踪误差信号检测方法中,可以以低成本消除由物镜偏移或盘倾斜产生的偏移而不降低使用光的效率。
    • 6. 发明授权
    • Supporting mechanism for allowing an object to make a
pseudo-translational motion
    • 允许对象进行伪平移运动的支持机制
    • US5687033A
    • 1997-11-11
    • US579300
    • 1995-12-27
    • Masayasu FutagawaRenzaburou Miki
    • Masayasu FutagawaRenzaburou Miki
    • G11B7/09G02B7/02
    • G11B7/0932G11B7/093
    • An objective-lens driving device has a supporting mechanism for supporting a magnetic circuit so as to allow it to freely make a pseudo-translational motion in the focusing direction. The supporting mechanism is provided with two hinges that are placed in such directions as to make a right angle with each other. The hinges are fixed onto the same plane of a base member at respective ends thereof that are farther from each other, and they are also fixed to the magnetic circuit at respective ends thereof that are closer to each other. Moreover, each hinge has flexible sections that are formed in at least two locations of each hinge with predetermined intervals from the magnetic circuit so that they are in parallel with each other. These flexible sections are formed in such a manner that they make a right angle with each other on the two hinges. This supporting mechanism, which has the hinges that are placed on the same plane, makes it possible to reduce a space taken in the focusing direction to a great degree. Therefore, it becomes possible to make the objective-lens driving device more compact and thinner. Furthermore, it is possible to easily manufacture the objective-lens driving device.
    • 物镜驱动装置具有用于支撑磁路以支持其在聚焦方向上自由地进行伪平移运动的支撑机构。 支撑机构设置有两个铰链,其被放置成使得彼此成直角的方向。 铰链固定在彼此较远的相应端部处的基部构件的相同平面上,并且它们也在其彼此更靠近的相应端部处固定到磁路。 此外,每个铰链具有柔性部分,其形成在每个铰链的至少两个位置,具有与磁路的预定间隔,使得它们彼此平行。 这些柔性部分以这样的方式形成,使得它们在两个铰链上彼此成直角。 这种具有放置在同一平面上的铰链的支撑机构使得可以在很大程度上减小聚焦方向上的空间。 因此,能够使物镜驱动装置更紧凑,更薄。 此外,可以容易地制造物镜驱动装置。
    • 7. 发明授权
    • Pickup device for a magneto-optical information recording system
    • 用于磁光信息记录系统的拾取装置
    • US5428584A
    • 1995-06-27
    • US97399
    • 1993-07-23
    • Yoshio YoshidaHiroyuki YamamotoRenzaburou MikiKuniaki OkadaYukio KurataKouji Minami
    • Yoshio YoshidaHiroyuki YamamotoRenzaburou MikiKuniaki OkadaYukio KurataKouji Minami
    • G11B7/135G11B7/12G11B7/13G11B11/10G11B11/105G11B11/00
    • G11B11/10543G11B7/124G11B7/13
    • An optical information reproducing device includes a light source for generating a light beam, an optical system for converging the light beam generated by the light source on a magneto-optical recording medium on which recording information is recorded and for converging a return light beam reflected from the magneto-optical recording medium, beam splitting means for splitting the return light beam into split light beams, first detecting means for receiving one of the split light beams to detect the intensity of the one of the split light beams, servo signal generating means for generating a tracking error signal and a focusing error signal based on the output of the first detecting means, an optical waveguide disposed between the beam splitting means and the first detecting means, the optical waveguide crossing an optical axis of the one of the split light beams, an optical coupler disposed on the optical waveguide for separating part of the one of the split light beams from the one of the split beams to form a guided light beam which is guided in the optical waveguide, second detecting means for receiving the guided light beam from the optical waveguide to detect the intensity of at least one polarization component of the guided light beam, and information signal reproducing means for reproducing the recording information based on the output of the second detecting means.
    • 一种光学信息再现装置,包括用于产生光束的光源,用于将由光源产生的光束会聚在其上记录有记录信息的磁光记录介质上并用于会聚从 磁光记录介质,用于将返回光束分成分束光束的分束装置;第一检测装置,用于接收分束光束中的一个以检测一个分束光束的强度;伺服信号产生装置, 基于所述第一检测装置的输出产生跟踪误差信号和聚焦误差信号;布置在所述分束装置和所述第一检测装置之间的光波导,所述光波导与所述一个所述分束光束 设置在所述光波导上的光耦合器,用于将所述一个所述分束光束的一部分分离 以形成在光波导中被引导的引导光束;第二检测装置,用于接收来自光波导的引导光束,以检测被引导光束的至少一个偏振分量的强度;以及信息信号 再现装置,用于基于第二检测装置的输出再现记录信息。