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    • 4. 发明授权
    • Electro-optical light control element
    • 电光控制元件
    • US4088394A
    • 1978-05-09
    • US688740
    • 1976-05-21
    • Jun Shimomura
    • Jun Shimomura
    • G02F1/01G02F1/055G02F1/133G02F1/1343G05D25/00G02F1/28
    • G02F1/0551G02F1/133G02F1/134309
    • An electro-optical light control element comprises a pair of transparent electrodes disposed in a predetermined spaced apart relationship, a layer of electro-optical substance disposed between the transparent electrodes and having a light transmission factor variable in accordance with a voltage applied thereto, and a substrate supporting thereon the transparent electrodes and the layer of electro-optical substance. The transparent electrodes and the layer of electro-optical substance together form a control area for controlling the quantity of light passing the transparent electrodes and the layer of electro-optical substance. Conductor electrodes are provided around the control area at a plurality of locations on one of the transparent electrodes and at least one location on the other transparent electrode so that the distribution of the light transmission factor within the control area may be made to substantially conform to a predetermined distribution characteristic.
    • 电光控制元件包括以预定间隔设置的一对透明电极,设置在透明电极之间并具有根据施加到其上的电压而变化的光透射系数的电光物质层,以及 支撑透明电极和电光物质层的基板。 透明电极和电光物质层一起形成用于控制通过透明电极和电光物质层的光量的控制区域。 导体电极设置在控制区域周围的一个透明电极上的多个位置和另一个透明电极上的至少一个位置处,使得控制区域内的光透射系数的分布可以基本上符合 预定分布特性。
    • 10. 发明授权
    • Exposure control device in a camera using an electro-optic light control
element
    • 使用电光控制元件的相机中的曝光控制装置
    • US4054890A
    • 1977-10-18
    • US612725
    • 1975-09-12
    • Jun Shimomura
    • Jun Shimomura
    • G03B9/08G02F1/01G02F1/03G02F1/055G02F1/07G03B7/08G03B9/56
    • G03B7/08G02F1/0327G02F1/0556G02F1/07G03B7/0807
    • An exposure control device in a camera comprises light intercepting means disposed between a picture-taking lens and a film and in the light path of the picture taking lens and retractable out of the light path by operation of a shutter release member, electro-optic light control means disposed in the light path of the picture-taking lens and having its transmittivity to light variable by an electrical signal, and control means operable in response to the retracting movement of the light intercepting means out of the light path to apply a first signal to the light control means for increasing its transmittivity, apply a second signal to the light intercepting means for returning the same to the light path in order to terminate the exposure of the film to light, and apply a third signal to the light control means for decreasing it transmittivity to a minimum.
    • 照相机中的曝光控制装置包括设置在摄像镜头和胶片之间以及摄影镜头的光路中的遮光装置,并且通过快门释放构件的操作可伸出光路,光电灯 控制装置设置在摄像透镜的光路中,并且具有通过电信号对光变化的透射率;以及控制装置,其可响应于遮光装置离开光路的回缩运动而施加第一信号 对于增加其透射率的光控制装置,向遮光装置施加第二信号以将其返回到光路,以便终止胶片对光的曝光,并将第三信号施加到光控制装置 将其透射率降至最低。