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    2.
    发明专利
    未知

    公开(公告)号：DE19917596B4

    公开(公告)日：2005-09-08

    申请号：DE19917596

    申请日：1999-04-19

    Applicant: SHARP KK

    Inventor： OKADA KUNIAKI ,  ISHII YORISHIGE ,  MATSUSHIMA TOSHIYUKI ,  FUJITA HIDEAKI ,  KURATA YUKIO

    IPC: G02B6/122 ,  G02B6/30 ,  G02B6/42 ,  H04B10/00 ,  H04B10/25 ,  H04B10/2581

    Abstract: Bidirectional optical communication devices are attached to both ends of an optical fiber, and each of them has a transmitting light wave guide coupled to a semiconductor laser and a received light wave guide which is coupled to a photodiode, and optically separated from the transmitting light wave guide. On the end face of the light-incident area of the optical fiber on which transmitting light coupled to the optical fiber from the transmitting light wave guide is directed, the light axis of the transmitting light is set so as to tilt with respect to the normal to the end face of the light-incident area so as to prevent reflected light on the end face of the light-incident area caused by the transmitting light from entering the photodiode installed on the same side as the semiconductor laser. Consequently, light communication is simultaneously carried out bidirectionally in a stable manner by using a single optical fiber; thus, it is possible to provide a bidirectional optical communication device and a bidirectional optical communication apparatus using this device at low costs.

    3.
    发明专利
    未知

    公开(公告)号：DE19757687C2

    公开(公告)日：2000-01-13

    申请号：DE19757687

    申请日：1997-12-23

    Applicant: SHARP KK

    Inventor： INUI TETSUYA ,  MATOBA HIROTSUGU ,  HIRATA SUSUMU ,  ABE SHINGO ,  ISHII YORISHIGE ,  OKADA KUNIAKI ,  FUJITA HIDEAKI

    IPC: G11B7/00 ,  G02B26/06 ,  G02B26/08 ,  G11B7/004 ,  G11B7/125 ,  G11B7/135 ,  G11B7/1362 ,  G11B7/1392 ,  G11B7/20 ,  G02B7/185

    Abstract: A deformable mirror includes a first base plate having a first reference surface, a transparent second base plate having a second reference surface opposed to the first reference surface, a flexible member disposed between the first base plate and the second base plate and having a reflective surface on a surface thereof, the flexible member being adapted to be fitted on the first reference surface or on the second reference surface, and a driver for fitting the flexible member on the first reference surface or on the second reference surface, wherein the flexible member is held between the first base plate and the second base plate, and the light rays to be reflected by the reflective surface are imparted with the first degree of spherical aberration or with the second degree of spherical aberration by fitting the flexible member on the first reference surface or on the second reference surface by the driver.

    OPTICAL COMMUNICATION SYSTEM
    4.
    发明专利
    OPTICAL COMMUNICATION SYSTEM 未知

    公开(公告)号：AU2003262261A1

    公开(公告)日：2004-03-11

    申请号：AU2003262261

    申请日：2003-08-21

    Applicant: SHARP KK

    Inventor： ISHII YORISHIGE ,  IWAKI TETSUO ,  TAMURA TOSHIHIRO

    IPC: G02B6/42

    Abstract: An optical communication system has a plastic optical fiber (POF) and an optical communication module. The POF has a spherical end surface, and light emitted from the spherical end surface has an NA of 0.35 or lower. The POF is installed in the module such that a light receiving surface of a light receiving element (PD) is at a distance, d, from an apex of the spherical end surface. The distance, d, is within a range of 0

    5.
    发明专利
    未知

    公开(公告)号：DE69428865D1

    公开(公告)日：2001-12-06

    申请号：DE69428865

    申请日：1994-12-16

    Applicant: SHARP KK

    Inventor： INUI TETSUYA ,  HIRATA SUSUMU ,  OHTA KENJI ,  MATOBA HIROTSUGU ,  ISHII YORISHIGE

    IPC: G11B9/14 ,  G01Q60/12 ,  G11B9/00

    Abstract: A probe (6) is displaced relative to a recording medium (8) according to a drive voltage. A chip (7) is provided at an end of the probe (6). The chip (9) serves to form pits and projections on a surface of the recording medium (8) according to a recording voltage (Vp2) and serves to output a current signal responsive to the pits and projections with a reproducing voltage (Vp1) applied. A voltage generator (14, 15) generates the recording voltage and the reproducing voltage based on address and data signals. A sample-hold unit (20, 21) samples at a specified frequency a current signal obtained from a no-recording area (9) of the recording medium by the chip (7) and produces an output voltage signal. A reproducing unit (16) demodulates and reproduces increment and decrement of the current signal obtained from a recording area (10) of the recording medium by the chip (7). A control unit (22) controlles recording and reproduction. The control unit outputs such a drive voltage that the interval between the chip (7) and the recording medium (8) is maintained constant by feedback control based on the voltage signal derived from the sample-hold unit (20, 21). The control unit controlles the recording so that no-recording areas (9) and recording areas (10) are arranged alternately.

    6.
    发明专利
    未知

    公开(公告)号：DE69418782T2

    公开(公告)日：1999-11-18

    申请号：DE69418782

    申请日：1994-07-11

    Applicant: SHARP KK

    Inventor： MATOBA HIROTSUGU ,  HIRATA SUSUMU ,  ISHII YORISHIGE ,  INUI TETSUYA ,  OHTA KENJI ,  ABE SHINGO ,  YAMASHITA ZENJIRO

    IPC: B41J2/14 ,  B41J2/16 ,  B41J2/045

    Abstract: A casing (25) and a nozzle plate (27) form a hollow cavity in which ink liquid can be filled. A buckling structure body (21) is disposed within this hollow cavity. A nozzle orifice (27a) is provided in a nozzle plate (27) at a position corresponding to the buckling structure body (21). The buckling structure body (21) has a portion extending in a longitudinal direction (in the direction of arrow D2). Both ends of the buckling structure body (21) in the longitudinal direction are fixedly attached to the casing (25) via an insulative member (23). The buckling structure body (21) is formed of a material that is displaced at least in the longitudinal direction by conduction of current from a power source (29). Thus, an ink jet head of a long lifetime is provided that can provide a great discharge force while maintaining its small dimension.

    Thermal head for recording using heat generated using exothermal resistances
    7.
    发明专利
    Thermal head for recording using heat generated using exothermal resistances 未知

    公开(公告)号：DE19643724A1

    公开(公告)日：1997-04-30

    申请号：DE19643724

    申请日：1996-10-23

    Applicant: SHARP KK

    Inventor： MATOBA HIROTSUGU ,  HIRATA SUSUMU ,  ISHII YORISHIGE ,  ABE SHINGO ,  ONDA HIROSHI ,  INUI TETSUYA

    IPC: B41J2/335 ,  B41J2/32

    Abstract: The thermal head has a substrate (2) and exothermal resistances (4) attached to the substrate at their opposite ends. Each thermal resistance expands from a non-displaced state, in which virtually no thermal stress occurs, into a curved state when its internal temp. reaches or exceeds a defined temp. A stimulation device (5) selectively stimulates the exothermal resistances, which consist of a conducting material with end parts at opposite ends attached to the substrate via insulating elements (3). The exothermal resistances generate heat according to their resistance values when stimulated by the stimulation device.

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