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1. 发明授权

US08246178B2 Focus control device for beam projector 有权
标题翻译：射束投影仪聚焦控制装置
公开(公告)号：US08246178B2
公开(公告)日：2012-08-21
申请号：US12700818
申请日：2010-02-05
申请人： Myeong-Ho Jeon , Moon-Chul Shin , Kang-Hoon Choi , Hyon-Myong Song , Jin-Hee Cho , Kyung-Han Kim , Hyun-Jun Jang
发明人： Myeong-Ho Jeon , Moon-Chul Shin , Kang-Hoon Choi , Hyon-Myong Song , Jin-Hee Cho , Kyung-Han Kim , Hyun-Jun Jang
IPC分类号： G03B3/00 , G02B7/04
CPC分类号： G03B3/00
摘要： A focus control device for a beam projector allows the focus of a lens assembly to be finely and easily controlled. The focus control device includes: a control member rotatably mounted on the beam projector for controlling the focus of a lens assembly; a rotary eccentric member provided in the control member, the rotary eccentric member having a control axis eccentric to the rotary axis of the control member, and being rotated while depicting an elliptical trace in response to the rotation of the control member; a focus guide member provided in the rotary eccentric member, the focus guide member allowing the lens assembly to be moved rectilinearly in the direction of an optical axis in response to the rotation of the control member; and an actuating member provided in the lens assembly and coupled to the focus guide member, the actuating member moving the lens assembly in the direction of the optical axis in response to the movement of the focus guide member. According to the present invention, with the rotation of the rotary dial, the moving distance of the lens assembly can be easily controlled, and the lens assembly can be moved finely to project a sharp picture image.
摘要翻译：用于射束投影仪的聚焦控制装置允许透镜组件的焦点被精细且容易地控制。聚焦控制装置包括：可旋转地安装在光束投影仪上用于控制透镜组件的焦点的控制部件; 设置在所述控制构件中的旋转偏心构件，所述旋转偏心构件具有与所述控制构件的旋转轴线偏心的控制轴线，并且响应于所述控制构件的旋转而描绘椭圆迹线而旋转; 设置在所述旋转偏心构件中的聚焦引导构件，所述聚焦引导构件响应于所述控制构件的旋转而允许所述透镜组件沿光轴的方向直线移动; 以及致动构件，设置在所述透镜组件中并且联接到所述聚焦引导构件，所述致动构件响应于所述聚焦引导构件的移动而沿所述光轴的方向移动所述透镜组件。根据本发明，通过旋转拨盘的旋转，可以容易地控制透镜组件的移动距离，并且可以精细地移动透镜组件以投射清晰的图像。

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