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    • 30. 发明授权
    • Optical scanning system for scanning object with light beam and
displaying apparatus
    • 用光束扫描物体的光学扫描系统和显示装置
    • US5144471A
    • 1992-09-01
    • US543404
    • 1990-06-26
    • Itsuo TakanashiShintaro NakagakiTsutou AsakuraMasato FuruyaTetsuji SuzukiHirohiko Shinonaga
    • Itsuo TakanashiShintaro NakagakiTsutou AsakuraMasato FuruyaTetsuji SuzukiHirohiko Shinonaga
    • G02F1/1343G02F1/29G09F9/35G09G3/34G09G3/36H04N1/04
    • G02F1/134309G02F1/29H04N1/04G02F2203/28
    • An electromagnetic radiation beam scanning system for scanning an object with an electromagnetic radiation beam. The scanning system comprises first and second beam-narrowing devices which are arranged so as to have elongated light-transmission regions, respectively, and which are overlapped each other so that the light-transmission regions intersect each other. Each of the beam-narrowing devices includes a light modulation layer showing an electro-optic effect, first and second electrodes disposed so as to sandwich the light modulation layer, first and second polarizers disposed so as to sandwich the light modulation layer and a power source for applying voltages to the first and second electrodes. The light modulation layer combined with the polarizers forms the elongated light-transmission region in response to application of the voltages to the first and second electrodes due to the power source so as to produce a narrowed beam when a light beam is incident thereon. The position of each of the light-transmission regions in each of the first and second beam-narrowing devices is arranged to be movable in response to variation of at least one of the application voltages due to the power source.
    • 一种用电磁辐射束扫描物体的电磁辐射束扫描系统。 扫描系统包括分别布置成具有细长的光透射区域并且彼此重叠以使得透光区域彼此相交的第一和第二光束变窄装置。 每个光束变窄装置包括显示电光效应的光调制层,设置成夹着光调制层的第一和第二电极,被布置以夹住光调制层的第一和第二偏振器和电源 用于向第一和第二电极施加电压。 与偏振器组合的光调制层响应于由于电源而施加到第一和第二电极的电压而形成细长的光透射区域,以便当光束入射时产生变窄的光束。 每个第一和第二光束变窄装置中的每个光透射区域的位置被布置成响应于由于电源而引起的至少一个施加电压的变化而是可移动的。