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Research on the examining-focus technology in the theodolite based on the phase method with lens-apart
Author(s): 
Pages: 349-351
Year: Issue:  z1
Journal: CHINESE JOURNAL OF SCIENTIFIC INSTRUMENT

Keyword:  自动检焦相位法离焦量CCD细分;
Abstract: 介绍了一种在经纬仪中应用相位法自动检调焦的技术:通过检测CCD输出信号之间相位差获得像的相对偏移量,获得离焦量来调节物镜的位置,使目标的像始终位于焦面上,实现设备的自动调焦;检焦系统的ZEMAX仿真从理论上证明相位法自动检调焦技术在经纬仪中应用可行,整个系统的实现将使经纬仪的自动化检调焦功能更加完善.
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