发明名称 VARIABLE FOCAL LENGTH CAMERA
摘要 The present invention provides a bifocal camera capable of changing focal length of a photographic lens system and having lens drive means operable by a motor to switch the photographic lens system between a first focal length state wherein a main lens component is located at a rear position and a second focal length state wherein the main lens component is located at a front position and an auxiliary lens component is located at an operative position. This camera comprises a device for automatically stopping the motor when shifting of the main lens component is interrupted by force, and a device for restricting the shifting of the main lens component between the front position and the rear position. The auxiliary lens component is moved and a lens barrier is opened and closed in interlocked relationship with the shifting of the main lens component.
申请公布号 US5099263(A) 申请公布日期 1992.03.24
申请号 US19900610453 申请日期 1990.11.09
申请人 MINOLTA CAMERA KABUSHIKI KAISHA 发明人 MATSUMOTO, TOSHIAKI;HODA, TAKEO;HATA, YOSHIAKI;KAMITANI, MASATOSHI;INOUE, NORIHIRO
分类号 G03B19/07 主分类号 G03B19/07
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