Video camera
专利汇可以提供Video camera专利检索，专利查询，专利分析的服务。并且PURPOSE: To automatically adjust the focus at the over-focal distance of a lens system by moving a zoom lens by electric power, and stopping the zoom lens automatically at a prescribed focusing position.
CONSTITUTION: At the time of macro photographing, a macro-wide lens 34 is set at an opened position by operating a lens switching lever 36 while the zoom lens 45 is kept in a state that it is rotated to a macro region. When the lens 34 is set at the opened position, a lens detection signal from a microswitch 38 is outputted to a microcomputer 60, and in this state, an AF circuit 61 is turned non-operative. As for focus adjustment at the time of macro- wide photographing, a macro button 74 is pushed so as to make the zoom ring 45 rotatable to the macro region, and a seesaw knob 52 is brought down to a wide side, and the zoom ring 45 is rotated to a wide direction by the electric power until the end surface 46B of a stopper 46 installed at the zoom ring 45 comes into contact with an adjusting screw 48 installed at the tip of a macro lever 47. Thus, the zoom lens comes to focus to the over-focal distance of the zoom lens at the time of the insertion of the lens 34, and the focus can be adjusted to a distance range from about 1m to infinity.
COPYRIGHT: (C)1992,JPO&Japio，下面是Video camera专利的具体信息内容。
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