摘要
为了实现自动对焦 ,用几何光学中的物象关系式建构了镜头位移量与物距的数学模型 ,据此 ,采用光电耦合器件、电压保持电路等电子器件与机械传动部件相结合 ,实现了自动对焦 .
In order to realize automatic focus, Apply geometric optical object\|picture relation, a mathematic model between the displacement of camera lens ΔA and the distance E of the object which is taken a photo is established on the paper, and adopt the photoelectricity coupler, voltage maintenance circuit etc. and mechanical transmission parts, realize automatic focus. There is certain reference value in design and maintenance of the autofocus system.
出处
《数学的实践与认识》
CSCD
北大核心
2003年第9期16-19,共4页
Mathematics in Practice and Theory
基金
河南省教育科学规划课题 ( 2 0 0 0- JKCHA- 1 2 1 )
