会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 9. 发明授权
    • Automatic focusing apparatus
    • 自动对焦装置
    • US4477183A
    • 1984-10-16
    • US445079
    • 1982-11-29
    • Yoshio KawamuraAkihiro TakanashiToshiei KurosakiShinji KuniyoshiSumio HosakaTsuneo Terasawa
    • Yoshio KawamuraAkihiro TakanashiToshiei KurosakiShinji KuniyoshiSumio HosakaTsuneo Terasawa
    • H01L21/30G02B7/28G03F9/00H01L21/027G03B27/52
    • G03F9/7026G02B7/28G03F9/7057
    • An automatic focusing apparatus according to the present invention is constructed of a base on which a substrate is placed, detection means for detecting a pressure of air which is caused to flow out of an interspace between the substrate and an orifice by spurting the air from the orifice toward the substrate, reference pressure generation means for generating a reference pressure which is necessary for setting a standard distance between the substrate and the orifice, a pressure transducer which receives pressure signals from said detection means and said reference pressure generation means and which converts a pressure difference between these pressure signals into an electric signal, base drive means for moving the substrate in parallel with the orifice on the basis of the output signal from said pressure transducer, and offset signal generation means for generating a signal which, when superposed on the output signal from said pressure transducer, serves to shift the substrate from the standard distance.
    • 根据本发明的自动对焦装置由放置基板的基座构成,检测装置用于检测从基板和孔之间的空隙流出的空气的压力, 基准压力产生装置,用于产生设置基板和孔口之间的标准距离所必需的参考压力;压力传感器,其接收来自所述检测装置和所述基准压力产生装置的压力信号, 这些压力信号之间的压力差成为电信号;基础驱动装置,用于基于来自所述压力传感器的输出信号与所述孔平行地移动所述基板,以及偏移信号产生装置,用于产生当叠加在所述压力信号上时, 来自所述压力传感器的输出信号用于使衬底移动 标准距离。