| 摘要 |
PROBLEM TO BE SOLVED: To accurately measure the position of a movable optical member of an imaging optics of an imaging device. SOLUTION: The imaging device 10 for a printing form 12 in a printing unit 82 of a printing press 84 is equipped with a light source 14 and an imaging optics 18 for projecting the light source 14 onto the printing form 12. An optical member 20 of the imaging optics 18, in particular, a lens is movable by way of an actuator member 48. The imaging optics 18 includes a sensor 24 for measuring the actual position of the optical member 20, the sensor having a coil and at least one sensor target. The sensor 24 is assigned to a controlling member 66 for adjusting the position of the optical member 20 via the actuator member 48, so that highly accurate dynamic positioning of the optical member 20 can be achieved. COPYRIGHT: (C)2005,JPO&NCIPI
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