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公开(公告)号:US5658062A
公开(公告)日:1997-08-19
申请号:US532322
申请日:1995-09-22
申请人: Nam Su Lee , Myung Keun Yeo , Sang Jae Lee , Joong In Shin
发明人: Nam Su Lee , Myung Keun Yeo , Sang Jae Lee , Joong In Shin
CPC分类号: H04N9/3155 , G02B7/102 , F21V14/06 , F21V23/0442
摘要: A light amount controlling apparatus includes a light source for producing light and a light source driver for driving the light source. A zoom lens unit includes a zoom lens for varying an angle of projection of the light, and a zoom lens position detector detects a position of the zoom lens. A memory stores control data corresponding to the position of the zoom lens and a memory controller reads the control data from the memory according to a detected value of the zoom lens position of the zoom lens position detector. A controller controls the light source driver to vary an amount of light projected from the light source in accordance with the control data output from the memory controller.
摘要翻译: 光量控制装置包括用于产生光的光源和用于驱动光源的光源驱动器。 变焦透镜单元包括用于改变光的投射角的变焦透镜,变焦透镜位置检测器检测变焦透镜的位置。 存储器存储与变焦镜头的位置相对应的控制数据,并且存储器控制器根据变焦镜头位置检测器的变焦镜头位置的检测值从存储器读取控制数据。 控制器控制光源驱动器,以根据从存储器控制器输出的控制数据改变从光源投射的光量。