Projection exposure device and also projection objective with a lens arrangement which has at least one lens group of negative refractive power, this lens group comprising at least four lenses of negative refractive power, and a lens of positive refractive power being arranged after the third lens of negative refractive power in this lens group.

 
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< Cam mechanism of a lens barrel

< Night vision and audio signal reduction system

> Coupling configuration for optically coupling an optical conductor to an opto-receiver

> Low-voltage electromechanical device including a tiltable microplatform, method of tilting same, array of such devices and method of setting dimple-to-substrate spacing
~ 00214