发明名称 Lens positioning system
摘要 Systems and methods to position most precisely a lens system of an optical device are disclosed. Embodiments of these electrical sensors comprise capacitive sensors, inductive sensors and resistive sensors to measure the actual position of a lens system with a precision of at least 1 μm. Read-out circuits using double-correlated sampling structures are providing the position signals from the electrical sensors to a controller. The controller compares the actual position signals with a set-signal representing a target position of the lens signal and issues a signal to a motor to get the lens system moved to the target position. A variety of motors/actuators can be used to move a slider carrying the lens system to the position desired.
申请公布号 US8363324(B2) 申请公布日期 2013.01.29
申请号 US20080008347 申请日期 2008.01.10
申请人 DIGITAL IMAGING SYSTEMS GMBH;KNOEDGEN HORST 发明人 KNOEDGEN HORST
分类号 G02B27/10 主分类号 G02B27/10
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