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    • 9. 发明授权
    • Photo-driven switching apparatus
    • 光驱切换装置
    • US5050969A
    • 1991-09-24
    • US456970
    • 1989-12-26
    • Kenji UchinoKazuyasu HikitaMikiya Ono
    • Kenji UchinoKazuyasu HikitaMikiya Ono
    • G02F1/01G02F1/055
    • G02F1/0126G02F1/055G02F1/0558
    • A photo-driven switching apparatus in which a light beam is switched or modulated by using only light beam(s), comprising (a) a dielectric substrate having "photovoltaic effect"; (b) one or more couples of electrodes formed in or on at least portions of the surface(s) of the substrate so as to polarize the portion(s) positioned between the couple(s) of the electrodes thereby, (c) one or more photo-driving or photo-receiving elements provided at least in the polarized portion(s) of the surface of the dielectric substrate, having a polarization direction arranged at one certain direction, and having photovoltaic effect so as to generate photovoltage; (d) a dielectric rotation element comprising a light beam switching passage or modulator having a couple of polarizers, the polarization direction of each of which is perpendicularly crossed or parallel to each other, positioned on the surface of incoming of a light beam to be modulated, and at the surface of outgoing of the light beam, and a couple of electrodes formed on a couple of the other surfaces facing to each other of the element to apply an electric field in the element; (e) connecting leads connecting electrically the electrodes of the photo-driving elent(s) respectively to the electrodes of the element; the light beam to be modulated being incoming through the polarizer into the element through which the light beam passes to be switched or modulated; and the switching passage being operated directly the the photovoltage generated by the photo-dirving element(s) which can be operated or switched only by illumination of ultra-violet ray to the surface of said photo-driving element(s).
    • 一种光驱动开关装置,其中通过仅使用光束来切换或调制光束,其包括(a)具有“光电效应”的电介质基板; (b)一个或多个电极对,形成在所述基板的所述表面的至少一部分中或之上,以便使位于所述电极的所述电极之间的所述部分偏振,(c)一个 或更多的光驱动或光接收元件,其至少设置在电介质基板的表面的极化部分中,具有沿一定方向排列的偏振方向,并且具有光电效应以产生光电压; (d)介质旋转元件,包括具有一对偏振器的光束切换通道或调制器,每个偏振方向的偏振方向彼此垂直交叉或平行,位于要调制的光束的入射表面上 并且在光束出射的表面上,以及一对电极,形成在面对该元件的另一个表面的一对表面上以在该元件中施加电场; (e)连接导线将驱动光驱的电极分别连接到元件的电极的引线; 待调制的光束通过偏振器进入光束通过的元件被切换或调制; 并且所述切换通道直接操作由所述光引导元件产生的光电压,所述光电转换元件可以仅通过将紫外线照射到所述光驱元件的表面而被操作或切换。