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    Apparatus and method for remakeable connection to optical waveguide
    1.
    发明专利
    Apparatus and method for remakeable connection to optical waveguide 有权
    用于可重复连接到光波导的装置和方法

    公开(公告)号：JP2011008268A

    公开(公告)日：2011-01-13

    申请号：JP2010153551

    申请日：2010-07-06

    Applicant: Internatl Business Mach Corp ,  インターナショナル・ビジネス・マシーンズ・コーポレーションInternational Business Maschines Corporation

    Inventor： FEGER CLAUDIUS ,  HOBBS PHILIP C D ,  MCGLASHAN-POWELL MAURICE

    IPC: G02B6/00 ,  G02B6/036 ,  G02B6/02 ,  G02B6/26 ,  G02B6/28 ,  G02B6/34 ,  G02B6/42

    CPC classification number: G02B6/2821 ,  G02B6/02 ,  G02B6/02033 ,  G02B6/03622 ,  G02B6/283 ,  G02B6/29316 ,  G02B6/421 ,  G02B6/4249

    Abstract: PROBLEM TO BE SOLVED: To provide an apparatus and a method for manufacturing a remakeable connection for a single-mode optical waveguide.SOLUTION: The single-mode optical waveguide 10 includes a core 12 surrounded by a cladding consisting of an inner soft layer 14 and an outer harder layer 16. The outer layer 18 has a grating structure on its inner surface, whose spatial frequency is the same as that of the guided mode. The thickness of the inner cladding is sufficient to keep the grating outside the mode field in undeformed regions of the waveguide, so that normally no out-coupling of the light occurs. Connections are made by crossing two such waveguides 10 at an angle and pressing them together. This results in deformation of the two waveguides such that the gratings are brought into proximity with the cores. Light is coupled out of one waveguide and into the other in the deformed region, resulting in a self-aligning optical connection. The out-coupled light propagates normal to the waveguide axis, so that errors in the crossing angle cause little change in efficiency. Because the cladding system is sufficiently resilient to recover after deformation, the connection is remakeable.

    Abstract translation: 要解决的问题：提供一种用于制造用于单模光波导的可重新连接的装置和方法。解决方案：单模光波导10包括由包含内软层14和 外部层18在其内表面上具有光栅结构，其空间频率与引导模式的空间频率相同。 内包层的厚度足以将光栅保持在波导的未变形区域中的模场外，从而通常不发生光的外耦合。 通过将两个这样的波导10以一定角度交叉并将它们压在一起而形成连接。 这导致两个波导的变形，使得光栅与芯接近。 光从一个波导耦合到变形区域中的另一个，导致自对准光学连接。 输出耦合光垂直于波导轴传播，因此交叉角的误差几乎不会导致效率的变化。 因为包层系统具有足够的弹性以在变形后恢复，所以连接是可重新制造的。

    SYSTEM AND METHOD FOR GAZE TRACING
    2.
    发明专利
    SYSTEM AND METHOD FOR GAZE TRACING 失效

    公开(公告)号：JPH1063410A

    公开(公告)日：1998-03-06

    申请号：JP15069597

    申请日：1997-06-09

    Applicant: IBM

    Inventor： HOBBS PHILIP C D ,  VAN KESSEL THEODORE G

    IPC: A61B3/113 ,  G01B9/02 ,  G01B11/26 ,  G06F3/033 ,  G06F3/038

    Abstract: PROBLEM TO BE SOLVED: To provide a tracing system which eliminates the need for a headgear and is precise by using a diode laser so as to measure period and amplitude generated by interference between the luster of the cornea and red-eye reflection from the retina. SOLUTION: A unidirectional scan is made by a rotary polygon mirror 75 with the laser light beam emitted by the diode laser 71. The light beam reflected by the rotary polygon mirror 75 passes through a light beam forming optical element 76 to reach the eye 77 of a user. The light beam reflected by the user's eye 77 returns through the light beam forming optical element 76 and is reflected again by the rotary polygon mirror 75 to reach an optical detector 79 through a baffle 78. The output of the optical detector 79 is an AC signal and corresponds to the saw-tooth wave modulation of the original laser light beam. This detected AC signal is inputted to a signal processing circuit 80 to determine evaluation regarding where the user is seeing according to a statistical model.

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