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1.
公开(公告)号:US4775967A
公开(公告)日:1988-10-04
申请号:US786499
申请日:1985-10-11
申请人: Satoshi Shimada , Hiroshi Sasaki , Nobuyoshi Tsuboi , Hideki Nihei , Norifumi Miyamoto , Ito Tetsuo , Yoshio Sato , Atsumi Watanabe , Ryo Hiraga
发明人: Satoshi Shimada , Hiroshi Sasaki , Nobuyoshi Tsuboi , Hideki Nihei , Norifumi Miyamoto , Ito Tetsuo , Yoshio Sato , Atsumi Watanabe , Ryo Hiraga
CPC分类号: G11B7/1353 , G11B7/08 , G11B7/0937 , G11B7/1372 , G11B7/0909
摘要: In the present invention, a micro Fresnel lens in the shape of a thin film is used. A lens driving member constructed of piezoelectric transducers or of magnets and coils is disposed around the lens. The focus of the lens is adjusted by controlling applied voltages to the piezoelectric transducers or the coils.
摘要翻译: 在本发明中,使用薄膜形状的微型菲涅尔透镜。 由压电换能器或磁体和线圈构成的透镜驱动部件设置在透镜周围。 通过控制对压电换能器或线圈的施加电压来调整透镜的焦点。