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    11.
    发明专利
    未知

    公开(公告)号：DE602005002856T2

    公开(公告)日：2008-07-17

    申请号：DE602005002856

    申请日：2005-03-17

    Applicant: SEIKO EPSON CORP

    Inventor： TAKEDA TAKASHI

    IPC: G02F1/13357 ,  H04N9/31

    Abstract: It is an object of the present invention to provide a light source unit that can supply bright light efficiently. The light source unit includes a light emitting unit (201) that emits light, a phase plate (204;404) that polarizes the light from the light emitting unit (201) to produce a first polarized light and a second polarized light that is polarized in a different direction with respect to the first polarized light, a reflecting-type polarizing plate (205) that transmits the first polarized light and reflects the second polarized light; and a reflector (202;302;502) that is provided near both the light emitting unit (201) and the phase plate (204;404), and reflects back a third light, which is a portion of the first polarized light and that passes through the phase plate (204,404), to the phase plate (204,404). The invention also provides a light source unit in which an evanescent coupling is used.

    12.
    发明专利
    未知

    公开(公告)号：DE69936041T2

    公开(公告)日：2007-09-13

    申请号：DE69936041

    申请日：1999-10-13

    Applicant: SEIKO EPSON CORP

    Inventor： KAMIJIMA SHUNJI ,  YONEKUBO MASATOSHI ,  TAKEDA TAKASHI ,  NISHIKAWA TAKAO

    IPC: B81B1/00 ,  B81B3/00 ,  B81C1/00 ,  G02B26/02

    Abstract: A micromachine and a manufacturing method according to the present invention are suitable for a micromachine that has a dynamic first microstructured portion serving as a drive portion, and a static second microstructured portion adapted to perform a switching function and functions to be performed as an optical element. The second microstructured portion can be manufactured at least without complex steps, such as a silicon process, by forming a static second microstructure on the dynamic first microstructured portion or in such a way as to be overlaid thereon by mold transfer. Thus, the microstructured portion of a complex shape can be easily formed with good reproducibility. This contributes to increased productivity thereof. Especially, when a plurality of elements are arranged in an array, similarly as in the case of a spatial light modulator, the stable reproduction thereof is achieved by the mold transfer. Thus, as compared with the case of manufacturing all elements in a silicon process, the probability of an occurrence of a defect is very low. Consequently, this contributes to improved yield of micromachines.

    13.
    发明专利
    未知

    公开(公告)号：DE69936041D1

    公开(公告)日：2007-06-21

    申请号：DE69936041

    申请日：1999-10-13

    Applicant: SEIKO EPSON CORP

    Inventor： KAMIJIMA SHUNJI ,  YONEKUBO MASATOSHI ,  TAKEDA TAKASHI ,  NISHIKAWA TAKAO

    IPC: B81B1/00 ,  B81B3/00 ,  B81C1/00 ,  G02B26/02

    Abstract: A micromachine and a manufacturing method according to the present invention are suitable for a micromachine that has a dynamic first microstructured portion serving as a drive portion, and a static second microstructured portion adapted to perform a switching function and functions to be performed as an optical element. The second microstructured portion can be manufactured at least without complex steps, such as a silicon process, by forming a static second microstructure on the dynamic first microstructured portion or in such a way as to be overlaid thereon by mold transfer. Thus, the microstructured portion of a complex shape can be easily formed with good reproducibility. This contributes to increased productivity thereof. Especially, when a plurality of elements are arranged in an array, similarly as in the case of a spatial light modulator, the stable reproduction thereof is achieved by the mold transfer. Thus, as compared with the case of manufacturing all elements in a silicon process, the probability of an occurrence of a defect is very low. Consequently, this contributes to improved yield of micromachines.

    14.
    发明专利
    未知

    公开(公告)号：DE602004002159D1

    公开(公告)日：2006-10-12

    申请号：DE602004002159

    申请日：2004-08-18

    Applicant: SEIKO EPSON CORP

    Inventor： YAMAZAKI TETSURO ,  YONEKUBO MASATOSHI ,  TAKEDA TAKASHI

    IPC: G02B26/08 ,  H04N5/74

    Abstract: An optically controlled device includes a transparent electrode (202), a conductivity variable portion (203), a driving electrode (204), a movable unit (108), and a support portion (206). A method of controlling the optically controlled device includes inputting a control light into the transparent electrode, applying a voltage between the transparent electrode and the movable unit modulating either the intensity of the control light or the voltage according to an input signal, and moving the movable unit to a predetermined position by generating a force proportional to the voltage between the driving electrode and the movable unit based on a change of electrical conductivity of the conductivity variable portion.

    15.
    发明专利
    未知

    公开(公告)号：DE69828034D1

    公开(公告)日：2005-01-13

    申请号：DE69828034

    申请日：1998-10-07

    Applicant: SEIKO EPSON CORP

    Inventor： TAKEDA TAKASHI ,  YONEKUBO MASATOSHI

    IPC: G02B26/02 ,  G02B26/08 ,  G09F9/30 ,  G09F9/37

    Abstract: A picture display device in accordance with the present invention is provided with a light guiding member equipped with a total reflection surface capable of totally reflecting and transmitting an incoming light ray for image display, and an optical switching member having a micro prism that extracts evanescent light leaking out of the total reflection surface and reflects it to a display area of the total reflection surface. The incoming light ray is applied to the display area from two symmetric directions so as to obtain outgoing light rays from all surfaces of the micro prism. Hence, a picture display device featuring still higher brightness and higher contrast can be attained. Furthermore, an apex angle of the micro prism, etc. are optimized thereby to provide further uniform outgoing light arranged perpendicularly with respect to the total reflection surface, thus realizing a picture display device capable of displaying high-quality images.

    OPTICALLY CONTROLLED DEVICE, METHOD OF CONTROLLING THE OPTICALLY CONTROLLED DEVICE, SPATIAL LIGHT MODULATOR, AND PROJECTOR
    16.
    发明专利
    OPTICALLY CONTROLLED DEVICE, METHOD OF CONTROLLING THE OPTICALLY CONTROLLED DEVICE, SPATIAL LIGHT MODULATOR, AND PROJECTOR 未知

    公开(公告)号：SG109576A1

    公开(公告)日：2005-03-30

    申请号：SG200404700

    申请日：2004-08-17

    Applicant: SEIKO EPSON CORP

    Inventor： YAMAZAKI TETSURO ,  YONEKUBO MASATOSHI ,  TAKEDA TAKASHI

    IPC: G02B26/08 ,  H04N5/74

    Abstract: An optically controlled device includes a transparent electrode (202), a conductivity variable portion (203), a driving electrode (204), a movable unit (108), and a support portion (206). A method of controlling the optically controlled device includes inputting a control light into the transparent electrode, applying a voltage between the transparent electrode and the movable unit modulating either the intensity of the control light or the voltage according to an input signal, and moving the movable unit to a predetermined position by generating a force proportional to the voltage between the driving electrode and the movable unit based on a change of electrical conductivity of the conductivity variable portion.

    17.
    发明专利
    未知

    公开(公告)号：DE69326213D1

    公开(公告)日：1999-10-07

    申请号：DE69326213

    申请日：1993-11-16

    Applicant: SEIKO EPSON CORP

    Inventor： SEKI HIDEYA ,  YONEKUBO MASATOSHI ,  ARIMURA TOSHIO ,  TAKEDA TAKASHI

    IPC: G11B7/12 ,  G11B7/125 ,  G11B33/14 ,  H01S5/022 ,  H01S5/068 ,  H01S5/0683 ,  G11B7/135 ,  G11B7/09

    Abstract: A laser beam emitted from the laser emission unit (20) is emitted through an objective lens (12) and focused on an optical medium. A reflected beam from the optical medium is returned through the objective lens and a diffraction grating (11) to a signal detection circuit (34) in the laser emission unit. Hitherto, many operating functions have been provided in the optical head (1). However, the present invention provides the laser emission unit in a lens holder (10) and with a plurality functions in the emission unit itself and so the space in the optical head can be reduced. Moreover, the space for the light path both emitted and received is also decreased. Thus, the size of the optical head is extremely reduced and since the optical head can be assembled by a smaller number of parts, the production costs can be decreased.

    19.
    发明专利
    未知

    公开(公告)号：DE69119658T2

    公开(公告)日：1997-01-09

    申请号：DE69119658

    申请日：1991-07-10

    Applicant: SEIKO EPSON CORP

    Inventor： YOKOYAMA OSAMU ,  YONEKUBO MASATOSHI ,  IWANO HIDEAKI ,  SAKATA HIDEFUMI ,  TAKEDA TAKASHI ,  SEKI TETSUYA ,  KOGURE SHIGERU

    IPC: G11B7/08 ,  G11B7/09 ,  G11B7/12 ,  G11B7/13 ,  G11B7/135 ,  G11B11/10 ,  G11B11/105

    Abstract: A small and inexpensive optical head for detecting a recorded signal, a focusing error signal and a tracking error signal, and an optical memory device utilizing the optical head. A diffraction device (103) is provided having two chirped grating regions (103A, 103B) for dividing a light beam from an optical recording medium (105) and directing the divided beams toward four band-shaped photoelectric transducers (106) and an astigmatism generator formed by the diffraction means (103) and a positive lens (102). The four photoelectric transducers are positioned in a plane inclined with respect to the optical axis of zero-order diffraction light, and the longitudinal axes of each of the band-shaped photoelectric transducers are radially arranged relative to the optical axis.

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